Abstract: During the creation of an operations manual 8 the structure thereof is separated into a static portion and a correction-capable portion and upon making the correction-capable information clear as parameters there is devised after the start of actual operation at least one means from a simulation based on information such as measurements of the effect provided by the plant/apparatus under consideration feedback of user opinions equipment specification and an operations plan so by adjusting the parameters of the variable part of the operations manual of the concerned plant/apparatus operations manual 8 of the concerned plant/apparatus is maintained dynamically and the burden of use of the plant/apparatus is alleviated over a long time.
FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10, rule 13)
" DYNAMIC MAINTENANCE MANAGEMENT METHOD OF OPERATIONS
MANUAL FOR PLANT AND APPARATUS"
HITACHI, LTD., a corporation organized under the laws of Japan of 6-6, Marunouchi 1-chome, Chiyoda-
ku, Tokyo, Japan
The following specification particularly describes the invention and the manner in which it is to be performed.
BACKGROUND OF THE INVENTION
The present invention pertains to a dynamic maintenance management method for equipment operations manuals.
Plant/apparatus used in various business activities, starting with manufacturing
activities, is prepared by purchasing standard manufactured goods that are either designed and
produced in accordance with, or are in conformity with, the objectives and conditions of the
aforementioned business activities. At this point, decisions are also made, regarding the
establishment of plant/apparatus specifications and methods of use of the concerned
plant/apparatus, and education methods and the like for people actually using the same, so that
the whole becomes optimal. Also, in the case where a future extension and improvement plan is definite for the aforementioned equipment, investigations are made including modification
specifications and methods on that occasion.
Hereof, an operations manual for appropriately using the plant/apparatus after completion is equally important as the functions, performance, and reliability of the plant/apparatus, so for precisely implementing the objectives of the business activity, there is demanded accuracy and ease of understanding of the contents thereof Because of this, various ways and means regarding the production of operations manuals have come to be carried out for some time.
In addition to ways and means to handle a situation from a format point of view, such as e.g. wording or kana added to a Chinese character to show its Japanese reading, uniformity of form and typeface font, and display based on graphs and chart illustrations, there have come to be accumulated ways and means of handling the situation from a content point of view as well, such as design information, the reflection of equipment specifications, the bringing in of expert knowhow, the reflection of past failure examples and success examples. In the past, an operations manual in which these ways and means to handle a situation were reflected had come to be considered an excellent operations manual.
However, at the time of initial production, even if an excellent operations manual is produced by largely drawing on the force of experts, once the concerned plant/apparatus is operating, the effort of experts is hardly drawn upon at all for the maintenance management of the manual, so it hardly ever happens that accurate corrections are performed on the manual with respect to the various corrections and modifications of the operating conditions.
Generally, even though there is great involvement of experts at the time of initial production, the maintenance management after start of operation is insufficient. Particularly from the characteristics of an operations manual whose management is entrusted to a local site, there are cases where there are slight alterations due to the person in charge on site, but there is a situation in which it cannot be said that maintenance management of the operations manual is sufficiently carried out after the start of operation of the plant/apparatus.
With respect to a problem like this, there is disclosed, e.g. in JP-A-2003-91531,
JP-A-2004-110149, and JP-A-2007-34573, regarding an operations manual (user's manual) concerned with a plant/apparatus that is created in the initial stage, the fact of ensuring, in the case where, i) as a reflection of legal modifications, ii) there exists several pieces of information concerned with the same device, making a setting to identify that which is the most recent one, and iii) in the case where the information pertaining to the same plant/apparatus is managed by being divided into multiple items, compatibility of the separated pieces of information of the same.
SUMMARY OF THE INVENTION
However, in these patent references, there is not taken into consideration the fact of correcting divergences with the operations manual that arise as a result of operating the equipment.
Using Fig. 1, the aforementioned situation will be explained. As for operations manual 8 of a newly installed plant/apparatus, a device specification 3, an operations plan 4, and a manual creation reference 5 are consulted at an initial setting time 1 by means of the knowledge 7 of an expert, a) the observance of a manual creation reference, b) practical use of existing resembling manuals 6, and c) a reflection of the device specification and the operations
plan are carried out, and a good way is figured out so that the concerned plant/apparatus operates in an optimal state. However, even if the plant/apparatus is actually operated and the internal and external environmental conditions of the concerned plant/apparatus change, there is not provided a mechanism 10 that feeds back the same results into the operations manual. As a result, there arises a divergence with the manual created at the beginning of operation.
Regarding the foregoing, there are specifically the following problems.
1. Even if the operating conditions (external conditions, internal conditions) have changed, it sometimes occurs that, without operations being able to follow in the wake thereof, situations such as non-attainment of objectives and a reduction in efficiency are brought about.
2. By the fact that the aforementioned items coincide, there is a possibility that the
result is that the operations manual becomes outdated and the contents of the manual are not reflected in the operations (operations deviating from the manual become the normal state).
3. It sometimes occurs that the person in charge on site, by the fact that the operations manual diverges from the actual condition, carries out personal ways and means of handling the situation and operations, and it sometimes occurs that operations contrary to the design specifications, operations linked with a reduction in the quality of goods or services, and operations which have a possibility of being linked with failures or accidents are carried out.
4. Also, there occurs things such an excessive burden being imposed accompanying the individual operations by the person in charge in Item 3 and the equipment lifetime being shortened, so there is a possibility that unimagined trouble is generated.
5. There is a possibility that the functions and quality of goods and services
provided by the concerned equipment are reduced.
The present invention is one that solves the aforementioned problems.
As a means for solving the problem, the below-mentioned scheme is devised.
In order to correct an operations manual in response to the operation of equipment, those items, from the operations manual, which are to be corrected in response to the operation of the equipment are designated, information pertaining to the operation of the equipment is collected and by correcting the items thereof, the manual is corrected on the basis of the collected information.
According to the present invention, it is possible to correct the contents of an operations manual in response to operating condition changes.
In this way, further effects such as mentioned below can be expected.
1. Since the contents of the operations manual follow the operating conditions, it becomes possible to operate the plant/apparatus precisely without placing an excessive burden on the person in charge of the operation. In this way, it is possible to strive for quality improvement or maintenance in the goods or services furnished by the concerned plant/apparatus.
2. Since it is possible to reduce the burden placed on the plant/apparatus, there can be expected a reduction in breakdowns and a lengthening of the lifetime of the plant/apparatus, so it becomes possible to diminish the TCO (Total Cost of Ownership).
3. By means of optimization and efficiency enhancement of the operation of the concerned plant/apparatus, a reduction in used energy becomes possible, so a contribution can also be made to the global warming problem.
4. By feeding back goods or service evaluations provided from the user, it is not
only possible to continue the provision of goods and services with the demanded quality, but by feeding back user evaluations, it is possible to avoid superfluous quality, so there can also be implemented, regarding the functions and quality of the provided goods and services, characteristics that it is too much to capture with mechanical measurements alone.
5. It is possible to save records such as the modified contents and the reasons and modification times therefor, of the operations manual, so evidence of the validity pertaining to objectives of use and the processes of the concerned plant/apparatus becomes possible. There are cases where evidence of the validity of the plant/apparatus or process is necessary, depending on the furnished products, but according to the present invention, even if what is concerned is a situation like this, it is possible to use the evidence of validity by saving, at the same time, measurement values, manipulation records, and the like, that relate to the concerned plant/apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a description of the prior art.
Fig. 2 is a summary of a means of solving the problem.
Fig. 3 A is a diagram showing the initial setting contents associated with a "'management standard' maintenance method".
Fig. 3B is an explanatory diagram regarding the "'management standard' maintenance method".
Fig. 4A is an explanatory diagram regarding "operating state measurements and actual results ascertainment".
Fig. 4B is an explanatory diagram and supplement regarding "operating state measurements and actual results ascertainment".
Fig. 5 A is an explanatory diagram regarding "feedback from user of product/service".
Fig. 5B is an explanatory diagram and supplement regarding "feedback from user of product/service".
Fig. 6Ais an explanatory diagram regarding "simulation function".
Fig. 6B is an explanatory diagram and supplement regarding "simulation function".
Fig. 7 is a diagram showing the maintenance management of a "production line operations manual".
Fig. 8 is a diagram showing maintenance management of a "production line
operations manual" and a forming shop operations manual update.
Fig. 9 is a diagram showing maintenance management of a "production line operations manual" and a forming shop operations manual update.
Fig. 10 is a diagram showing maintenance management of a "production line operations manual", a forming shop operations manual update, and an update of each of the forming shop manufacturing process times.
Fig. 11 is a hardware block diagram of an operations manual maintenance
management device.
DETAILED DESCRIPTION OF THE INVENTION
1. First Embodiment
Using Fig. 2, a summary of the present embodiment will be described.
1. "Preparation at the time of new operations manual creation ((d) clear statement of adjustment
item)"
In order to dynamically manage the maintenance of a plant/apparatus operations manual on the basis of the state after operation, the items subject to adjustment when the operating conditions have changed are specified at the time of creating the concerned plant/apparatus operations manual, and the concerned contents are clearly stated in the manual. Further, this information is saved in a database.
In the present embodiment, a work timing 17, a work object 18, and a work settings value 19 are specified as being subject to adjustment.
Also, there is provided a database of equipment specification 3 of the plant/apparatus under consideration, or a component thereof, and it is devised to be able to look up necessary information.
2. Preparation at the time of a new operations manual creation (designation of (d) parameter)
Each of the type values (parameters) taken to be necessary (modifications are added depending on the state) for the maintenance of the operations manual is clearly stated in the manual and, further, this information is stored in the database. In the present embodiment, work timing 17, work object 18, and work settings value 19 are subject to adjustment, the respective values (time of commencement of work, XXX, MNC) becoming parameters.
3. Measurement and actual result ascertainment of operating state
For the purpose of dynamic maintenance management 12 of the operations manual after the start of operations, there is carried out an (e) measurement and actual result ascertainment of the operating state, and it is checked whether operation of the concerned
plant/apparatus is conducted under the operating conditions assumed in the operations manual, or whether the plant/apparatus is used within the assumed range. As for this check, it is checked whether the values are within the assumed range by comparing plant/apparatus information sensed by various sensing devices and information serving as a reference set at the time of the operations manual creation. In the case where this sensing result yields a deviation, operations manual 8 is corrected and an instruction to create an operations manual 8v is emitted.
4. Feedback from user of product/service
From a user 13 of the product or service furnished by the concerned equipment, feedback (f) such as the degree of satisfaction is obtained, and, upon carrying out fixed statistical processing such as the distribution of the degree of satisfaction, a reflection 15 in the contents of operations manual 8v is performed, as the need arises.
5. Simulation (g)
In order to reflect 14, in advance, a modification of operations plan 4 accompanying a change in the conditions related to operations (external conditions and internal conditions) in the manipulation contents of an influenced plant/apparatus, there is carried out a simulation (g) on the basis of equipment specification 3 or information about operating conditions after the modification, and the modified passages and modified contents are revealed and reflected in operations manual 8v.
The summary of the present embodiment is as mentioned in the foregoing. Next, the details of the summary mentioned above will be described. Details of Embodiment 1
Using Fig. 3 A and Fig. 3B, there will be described a "management standard" maintenance method determined by a law (hereinafter called the Energy Conservation Law) related to the rationalization of energy use.
1. Regulatory requirement items of the Energy Conservation Law
The Energy Conservation Law is a law that promotes reasonable use of energy, and herein, various controls for the purpose of energy conservation are carried out, with respect to operators consuming energy on or above a set scale. Therein, there are the setting of a "management standard" with respect to plant/apparatus using energy and the fact of making compulsory operation of plant/apparatus based on the same "management standard". The "management standard" corresponds to the operations manual of a plant/apparatus taking energy conservation as an objective.
2. Constituent items of the management standard
On the basis of a "judgment reference" determined by the nation, there are
required, as energy conservation action promotion items, the creation of a management standard and the setting of management objectives. The "management standard" is one that determines measures in four phases, i) management, ii) measurements and records, iii) maintenance and inspection, and iv) new installation, of a concerned plant/apparatus. It has been decided to make a statement to the effect that equipment launching and stopping, set temperature, measurement procedure, and the like, be able to operate according to business procedures and it has been decided to determine the same for each plant/apparatus or for each cluster of plant/apparatus carrying out the same objective and the same operations. 3. Overall structure of the present embodiment (preparation during initial creation)
In the present embodiment, there will be given, regarding the creation support and maintenance management of a "management standard" compatible with the Energy Conservation Law, a description taking large-sized store air conditioning as an example. This air conditioning is taken to be one composed of several packaged air conditioning units. Each packaged air conditioning unit is taken to have the same capacity and it is assumed that the units can respectively be independently started and stopped.
In Fig. 11, there is shown a hardware block diagram of a manual maintenance management device carrying out maintenance management of a manual. This devised is provided with an arithmetic part (CPU or Central Processing Unit) carrying out various kinds of processing, a storage part (hard disk) storing various kinds of information, and an interface part carrying out communication with the outside. Here, the interface part is connected with sensors installed in external plant/apparatus and collecting information about these plants/apparatuses.
Fig. 3 A is an explanatory diagram of the initial settings of the "management standard". In order to dynamically manage the maintenance of the "management standard" of the plant/apparatus in response to the operating state, there is a need to determine, at the time of
the initial setting, items and specific parameters carrying out modifications.
As for the processing flow of the "initial creation", design specification or equipment specification 3 and operations plan 4, prepared in advance for each plant/apparatus, are made to be reflected in the "management standard" and operations manual 8 is created in accordance with manual creation reference 5. Contents 23 of equipment specification 3 are information related to air conditioning capacity supply, such as the relationship between the power consumption and the air conditioning capacity of the packaged air conditioning unit, the location of installation, and allocated floorspace. Contents 24 of operations plan 4 are an operations plan of a store, being information related to air conditioning load, such as the opening and closing hours by weekday, the anticipated number of visitors, the normal outside air
temperature, and the set target temperature.
Based on assumptions such as these, the result is that operations and maintenance management of the plant/apparatus are carried out on the basis of operations manual 8, but in order to dynamically maintain this manual in response to the operating state, there is a need to determine in advance, at the initial setting time, which information of the concerned operations manual 8 becomes subject to modification.
In the case of "management standard" 21 of a packaged air conditioning unit compatible with the Energy Conservation Law, regarding the four items i) management, ii) measurements and records, iii) maintenance and inspection, and iv) new installation, the result is the format of a table consisting of manipulation contents, the management reference thereof, and an explanatory note. Within this operations manual, as items that are dynamically modified on the occasion of equipment operations and maintenance management, a starting time 25-1, an outside temperature 26-1 being a management reference, a set temperature 26-2, and a store visitor number 26-3 are taken as variables. Also, an air temperature judgment time 27-1 and a visitor number fluctuation unit 27-2 having an influence on the adjustment of the number of operating air conditioning units are also taken as variables. 4. Overall structure of the present embodiment (maintenance management)
In Fig. 3B, there is made a statement about a method of dynamically maintaining the concerned operations manual at the time of actual operation. In accordance with the created operations manual 8v, there is carried out operation of packaged air conditioning units 29-1, 29-2, 29-3, ..., and 29-n of a large-sized store 22. On the basis of the operations plan (opening hours, number of anticipated store visitors, set temperature, and the like) of the day in question and outside air temperature 30, packaged air conditioning units 29-1, 29-2, ..., and 29-n are started and a target temperature is set. At this point, temperatures 28-1, 28-2, 28-3, ..., and 28-m inside the store are measured and, depending on the deviation from the set temperature, it sometimes occurs that there is carried out operation or halting, or output adjustment, of packaged air conditioning units 29-1, 29-2, ..., and 29-n. Also, it sometimes occurs that the actual number 31 of store visitors is ascertained and that there is carried out adjustment of the number of packaged air conditioning units. However, even if operation based on operations manual 8v is carried out, in the case where deviations from the target temperature are produced frequently, it is handled with a correction of starting time 25-1, set temperature 26-2, judgment time 27-1 of the outside air temperature, and the like, that are stated in operations manual 8v, or it becomes necessary to adjust standard store visitor number 26-3 and customer number variation 27-2 of the variation in the number of operated packaged air conditioning units. For this reason, there are
carried out (e) measurements and ascertainment of actual results of operating state.
Also, as (f) feedback from users of the product/service, there is requested a survey 32 from the shoppers actually using the store as to whether the air conditioning itself is appropriate even in the case where no temperature deviation arises, the bodily sensation of the air conditioning is asked to be stated in a staff log 33, and the accuracy of the air conditioning method (the set temperature, the number of working packaged air conditioning units 29, the output thereof, and the like) is investigated.
Further, by means of the (g) simulation function, there is ascertained the sensitivity with which an operations method, unit number adjustment, or output adjustment in the case where operation departs from the actual operating conditions has an influence on temperatures 28-1, 28-2, ..., 28-n inside the store, and the like, and there are obtained feed back data at the time of modifying the respective operations references.
These functions are used individually or several in combination and are ones that implement the targeted "dynamic maintenance of the 'management standard'". Regarding the individual functions, a description will be given in the next paragraph and onwards.
Further, the set temperature is not uniform inside the store and there are also cases where it differs depending on the selling space (example: setting the temperature of the perishable foods counter on the low side), but for the purpose of description simplification, in the present embodiment, the set temperature inside the store is taken to be uniform. 5. Operating state measurement ascertainment of the present embodiment
Regarding (e) measurement and actual result ascertainment of the operating state, the details will be described individually using Fig. 4A. Each of the measured temperatures 28-1, 28-2, 28-3, ..., and 28-m are measured and the deviations from the set temperature taken to be the target are calculated, this being continued for a fixed time interval (from one week to several months). On the basis of the gathered deviation data, the average and the standard deviation thereof are calculated (function 41). Since it is possible to ascertain quantitatively a state in which the set operations pattern diverges from the average value and the standard deviation, the normalization of the operations pattern of the packaged air conditioning units is measured on the basis of these data.
Specifically, since the air conditioning capacity works out to be a surplus if the temperature deviation is negative and the capacity works out to be a deficit if the temperature deviation is positive, operations plan 4 is looked up and an appropriate operations pattern "Air Conditioning Capacity" is estimated (function 42). As a result, there is obtained an air conditioning capacity difference 43 consisting of a base air conditioning pattern 44-1 and a
corrected air conditioning pattern 44-2. Since, by removing this difference 43 from the air conditioning capacity for each packaged air conditioning unit obtained from equipment specification 3, the changes in the number of operating units and the capacity are recognized, it is possible to obtain the operations schedule after modification.
This schedule is written in a form with, respectively, a modification 46-1 with respect to starting time 25-1, a modification 46-2 with respect to set temperature 26-2, and a modification 46-3 with respect to air temperature judgment time 27-1 to aim at a
modification/normalization of the "management standard".
Subsequently, there will be given a description, using Fig. 4B, of the details of the procedure carrying out modifications of air conditioning unit operations patterns. From the deviation state of the air conditioning state inside the store, the extent of incompatibility of the air conditioning load and the air conditioning capacity is obtained and from the spatial volume of the portion corresponding to the enthalpy difference that is obtained from the respective deviations of the temperature and the humidity with respect to the set values using a moist air chart, the adjustment quantity of the air conditioning unit capacity needed in order to cancel the concerned incompatibility is recognized (function 47). The respective packaged air conditioning unit operations patterns obtained from operations plan 4 are normalized (function 42) by this adjustment quantity.
As a result hereof, the operations pattern of an air conditioner is modified from base pattern 44-1 to corrected pattern 44-2. In this way, since the air conditioner capacity taken to be necessary in each time slot is obtained, specification 3 of each equipment is looked up, the capacity for each of the concerned pieces of equipment is taken into consideration, the capacity of each air conditioner is accumulated so as to satisfy the obtained air conditioning capacity, and an operations plan is obtained.
Regarding the deviation of the air conditioning capacity obtained with function 47, the result is that the individual air conditioner operations plans 49-la, 49-lb, 49-lc, ... constituting the air conditioner operations plan 48-a before modification are modified into operations plans 49-2a, 49-2b, 49-2c, ... These modification contents are reflected in the operations manual. 6. Feedback from users of a product/service of the present embodiment
Regarding the (f) feedback from users of a product/service, the details thereof will be described individually using Fig. 5 A. In the case of the present embodiment, the users of the product/service are store visitors and staff working in the store. Also, the feedback information is the comfort of the air conditioning. How the users are capturing the comfort of the air
conditioning is acquired, in the case of the store visitors, with a survey handed over at the cash register, and, in the case of the staff, it is basically acquired with the staff log. Since one asks for the feedback information to be entered with the same reference, the choices ("hot",
"somewhat hot", "comfortable", "somewhat cold", "cold", "humid", and "dry") are decided in advance and a form is chosen in which one asks for a selection to be made therefrom. This is expressed numerically by means of a function 51 and there is carried out statistical processing 52. As for the statistical processing, the average and a moving average are obtained and there are obtained the degrees of correlation between the number of visitors, the external air temperature, the season, and the concerned time slot with the air conditioning capacity. The relation between the sensation of the users and the air conditioning capacity is ascertained and the starting time, the reference outside air temperature, and the number of packaged air conditioning units are adjusted. In this way, there becomes possible a tradeoff 53 between the used energy and the comfort of the users, so a modification 54-1 to starting time 25-1, a modification 54-2 to reference external air temperature 26-1, and a modification 54-3 to the number of store visitors 27-2 adjusted for the number of air conditioning units, of "management standard" 21, are respectively written in, and feedback (f) from the product/service users is implemented. This function is a function that is not only determined by equipment specification 3 or operations plan 4 but in which it is possible to reflect the sensation of the users in the modifications of the "management standard", so it plays a role for obtaining a balance between an increase in comfort and consumed energy, as well.
Further, as a means for feeding back the sensations of the users, a survey and a staff log were used in the present embodiment, but there can be adopted a method capable of real-time entry, such as the utilization of portable terminals according to recent technology, and it is also possible to reduce the time to feed back the sensations of the users.
Subsequently, there will be carried out a supplementary description, using Fig. 5B, regarding the processing contents of the feedback results of store customers and staff, who are the service beneficiaries.
To the user comfort feedback numerical value 51 obtained from a customer survey 32 and a staff log 33, the date, the time slot, and the place, by which the same information is obtained, are added, taking it to be a chart 5 Id. This is processed in statistical processing 52 of the user feedback, as an input 51i. The statistical processing is carried out making a consolidation for each place of data procurement and each date and time slot with which the concerned feedback data are acquired. In the case where the data are numerous, there can be expected a result with higher accuracy if a classification can be made even regarding the case
where the outside air temperature and the number of store visitors differ.
Also, regarding the case where it is possible to ascertain the number of visitors with a sensor installed at the doorway of the store in real time, or the case where it is possible, as mentioned above, to ascertain customer sensations by a portable terminal or the like, processing is carried out obtaining these moving averages upon absorbing short-term fluctuations.
There are obtained the cross correlations between the air conditioner capacities that correspond to the respective data groups and there is obtained the sensitivity of the air conditioner capacities with respect to user feedback (degree of comfort) 51.
x = X(xi-Avex)(yi-Avey) / (SQRT(Z(xi-Avex)2)- SQRT(I(yi-Avey)2)},
(Math. 1) where xi is the degree of comfort, yi is the air conditioner capacity, AVE is the average, and SQRT is the square root.
As a result hereof, it is checked that the cross correlation coefficient x is equal to
or greater than a limit value (e.g. 0.5), the deviation Ax of the degree of comfort and the
deviation Ay of the air conditioner capacity corresponding thereto are obtained, the sensitivity Ay
/ Ax is obtained, and the air conditioner adjustment quantity is obtained.
By multiplying this adjustment quantity by the degree-of-comfort deviation portion of the sensitivity and writing the same to the operations manual so as to adjust the air conditioner capacity, maintenance of the concerned operations manual becomes possible.
Also, in the case where the cross correlation x between the degree of comfort and
the air conditioner capacity, obtained by Math. 1, is equal to or less than a limit value (e.g. 0.5), the sensitivity is not calculated and the adjustment quantity is fixed and recorded in the operations manual. The adjustment quantity is taken to be as mentioned below.
i) The case where the degree of comfort is shifted towards "hot":
a) If the air conditioner is in the air cooling mode or halted, the course of increasing the air cooling capacity is taken.
b) If the air conditioner is in the air heating mode, the course of reducing the air heating capacity is taken.
ii) The case where the degree of comfort is shifted towards "cold": If the air conditioner is in the air cooling mode, the course of reducing the air cooling capacity is taken.
If the air conditioner is in the air heating mode or halted, the course of increasing the air heating capacity is taken.
7. The simulation function of the present embodiment
Regarding simulation (g), the details will be described individually using Fig. 6A. A number of roles of the present function can be considered, but here, a statement regarding the handling of a case where operations that depart from actual operating conditions have become
necessary is taken to be made.
As an example of carrying out operations that depart from actual operating conditions, a statement will be made regarding the case of carrying out operations with a number of air conditioning units which is lower than normal, due to an accident or an inspection, or the case of substantially holding back the air conditioner operations in a specific time slot by means of a demand for a reduction in power consumption.
Air temperatures 28-1, 28-2, 28-3, ..., and 28-m inside a store during operation and the operating states of packaged air conditioning units 29-1, 29-2, 29-3, ..., and 29-n are captured and, on the basis of these data, the number of operation-capable units, apportioned zones and air conditioning load movements, and the like, are taken to be entries, and there is simulated a method of covering the air conditioning load. Specifically, the result is that there is simulated, with respect to the air conditioning load that should be covered in each time slot, in which way the work-capable packaged air conditioning units are operated. The capacity of the packaged air conditioning units and the like are obtained from equipment specification 3. Taking into account the fact that the air conditioning capacity is smaller than normal, a corrected pattern 57-r is created with respect to a base pattern 57-o of an air conditioning capacity pattern 56, with a narrowing down to an advancement of the starting time, or the like, an operations schedule 58 based on the number of work-capable units is created, and a modification 59-1 of starting time 25-1, a modification 59-2 of the number of operating units 26-3, and a modification 59-3 of outside air temperature judgment time 27-1, all of "management standard" 21, are carried out.
Next, using Fig. 6B, there will be described the simulation contents in the case where operation is carried out with fewer air conditioners than normal or in the case where there is an inhibition of air conditioner operation in a fixed time slot due to an instruction for a reduction in power consumption. The result is that there is obtained a corrected pattern 57-r, with respect to an air conditioner operation base pattern 57-o, in which the result of setting the simulation conditions is obtained.
In Fig. 6B, there is given a description of two cases, the case in the lower left of a reduction in the number of operating air conditioners and the case in the lower right of a substantial fixed time slot capacity reduction due to a demand for a reduction in electricity consumption.
i) Reduction in the number of operating air conditioner units
Since the number of operating air conditioners is insufficient with respect to the air conditioning load, the result is that corrected pattern 57-r responds by means of an adjustment of the air conditioner operating time or the like. The operating time is increased by an advancement of the starting time and a deferment of the halting time. However, as for the load with respect to air conditioning, if one takes into account the fact that, unchanged from the past, it is almost only possible to use the air conditioning capacity obtained with early operation for an air conditioning load that arises at that time, the result is that the air conditioning capacity is insufficient in the time slot when air conditioning demand rises, so the target temperature cannot be implemented.
As for the air temperature that is estimated from the air conditioning load at this time, there is brought about a rise or a fall in the air temperature due to the load that could not be covered with the air conditioning capacity. The lacking quantity of air conditioning capacity of each time slot (e.g. by one-hour intervals) is obtained and displayed so that it is possible for the operating person to find out about this rise or fall. ii) Substantial fixed time slot reduction
It sometimes occurs that there is carried out operation in which the number of operating air conditioner units (air conditioning capacity) for a certain time slot is substantially suppressed upon receiving an instruction from the outside to respond to a reduction in power consumption. Even in this case, since the result is that the air conditioning capacity throughout a day is insufficient with respect to the demand for air conditioning, corrected pattern 57-r carries out a starting time advancement and halting time deferment response, so there is carried out operation in which the integrated value of a day's air conditioning capacity is accumulated to aim for a designated numerical value.
However, since the principle for air conditioning loads is for the same to be covered at the times of occurrence, the air conditioning capacity obtained by advancement and the like is not able to cover the demand peak of the goods to be preserved by leaving the air of a room cooled (or heated) or the like. The air conditioning capacity that is lacking in the demand peak time slot or in the air conditioner operation inhibition time slot is found and, on the basis hereof, the width of divergence with the targeted temperature is found and recorded in the operations manual. The operator can take measures such as calling the attention of the users on the basis of these contents.
The air temperature divergence width is found from the lacking air conditioning capacity and the capacity of the space subject to air conditioning and using an air chart.
8. According to the present embodiment, there can, in addition to general results, be expected the following.
i) Since it is possible for the maintenance management of the "management standard" determined in the Energy Conservation Law to have a form which responds to changes in the situation on site, there is a rise in the possibility of being able to implement an obligation to make an improvement effort of 1% per year in the basic energy consumption units which are an obligation to make an effort, the same not only being an observance of the law but also a contribution to preventing global warming.
ii) Since it is possible to reflect user sensations of air conditioning and the like in the "management standard", it is easy to obtain a balance between comfort and energy conservation. Further, there is also possible equipment operation that lays emphasis on energy conservation after having secured the understanding of the users in advance, and it becomes possible to respond promptly when energy conservation must be further strengthened due to
company requirements and the like.
iii) Since the maintenance management of the "management standard" becomes possible without drawing on the knowhow of experts, it is possible to reduce the cost of energy conservation management.
iv) Since equipment specifications and operating conditions are looked up and the information thereabout is put to practical use for the purpose of the maintenance management of the "management standard", the diversion of existing "management standards" can be carried out easily on the occasion of newly setting a "management standard" of a similar equipment.
v) Since it is possible to ascertain the manipulation sensitivity, consisting in how various manipulation variables (number of packaged air conditioning units and output of each equipment in the present embodiment) mentioned in the "management standard" influence the air conditioning result and the energy conservation result, it is possible to introduce equipment with a higher degree of compliance with the objective at the time of the new installation of equipment.
vi) Even in the case where the air conditioning cannot completely fulfill the objective, due to the main reason of not being able to control external requirements and the like, it is possible to quantitatively ascertain the lacking portion and carry out appropriate equipment operation. 2. Second Embodiment
As another embodiment of the present invention, there will hereinafter be given a description regarding a "production line operations manual maintenance method".
As an object of the present embodiment, there are taken up shaping and assembly processes to manufacture a product A. An outline thereof is shown in Fig. 7. The concerned shaping and assembly processes are composed of a forming shop 60, a component assembly shop 61, a product assembly shop 62, and an inspection shop 63 and are provided with a device measuring the times at which products and components transit the respective shop entrances and exits. There are respectively installed: an entrance 65-1 and an exit 65-2 with respect to forming shop 60, an entrance 66-1 and an exit 66-2 regarding component assembly shop 61, an entrance 67-1 and an exit 67-2 with respect to product assembly shop 62, and an entrance 68-1 and an exit 68-2 with respect to inspection shop 63. Also, for the purposes of simplification of the description, it is assumed that there is only one space or less to insert products and components in each shop. (The result is that only products or components in the process of shaping or assembly enter.) The differences in required time of the respective processes are adjusted in a buffer provided between the processes.
There is a product A manufacturing manual 75 for operating the whole having a configuration in which, subordinate thereto, there are a forming shop operations manual 70, a component assembly shop operations manual 71, a product assembly shop operations manual 72, and an inspection shop operations manual 73. The interrelationship of each of the shops is that, as shown in Fig. 7, forming and component assembly are carried out in parallel and that product assembly and inspection are carried out thereafter.
In the present embodiment, regarding forming shop 60 operations manual 70
among these, the contents thereof are automatically updated following progress in operation. As for the present embodiment, there is assumed a case in which a process design is carried out in which, in the initial stage, a little extra operations time is estimated for each process in the case of inserting a new product in the production line and the operation times are reduced as the degree of learning of the operators rises. For the process design, there are used IE (Industrial Engineering) techniques such as process analysis and operation analysis, but since, in the present specification, there is no essential relationship between the description of the embodiment and IE content details, a description regarding IE will be omitted.
In Fig. 8, there is given a description regarding information related to an update of operations manual 70 of the forming shop. The contents of forming shop operations manual 70 take on a shape like table 76. In this table 76, in the initial process design regarding each process 76-2 of process numbers 60-1, 60-2, 60-3, ..., and 60-n, there are defined an operation content 76-3 thereof and an operation time 76-4 needed for each operation is determined like aa, bb, cc, dd, .., andnn.
Besides, in actual operation, regarding each of the manufactured products, concerning the products inserted in forming shop 60, the same are numbered 0001, 0002, ..., and the times UU0001, UU0002, UU0003, ... for the products to transit the forming shop are measured. The forming shop transit time is calculated below.
UU(v) = TT(v) - SS(v) v - 0001, 0002, 0003, ...
Also, in order to have the operator opinion related with the operation time reflected in the operations manual, it is asked of each operator of the forming shop to make a self-declaration about spare operation time and the average XX thereof is found. Regarding the spare operation time, upon providing fixed limits, there is carried out a policy of supplying incentives and the like.
In Fig. 9, there is given a description regarding an update of the forming shop operations manual. Process transit times 77-4 (operation times) of the individual products and differences of the initially set operation times 76-4 (aa-UUOOOl, bb-UU0002, cc-UU0003, ...) are found.
Using these differences, the average 78 of the spare times of the operator self-declarations, and a parameter 81 making an allocation to the deviation for each process, operation times aa, bb, cc, ..., and nn of each process which are recorded in the forming shop operations manual are corrected. By carrying out this correction multiple times, accompanying a rise in the degree of learning, the operation time of each process converges, among the various constraints such as needed operators and equipment and the like, to a numerical value capable of raising the greatest production efficiency. Regarding the contents of the parameter making allocations to the deviation for each process and a method of correcting operation times 76-4 of each process, there will be given a description using Fig. 10.
In Fig. 10, there is carried out, in the procedure below, a correction of the operating time of each process stated in the forming process operations manual.
i) First, there is carried out a computation 90 of the actually resulting spare operation times of the forming process. In the forming process, the number of products created until the operation time correction start is taken to be P and the average uuAve of the actual results of the forming shop operation times (UU0001, UU0002, ..., UUP) of these products is found. All of the process times stated in the forming shop operations manual are summed up and the forming shop process time for one product is found. The difference uuDev of these two time types is found.
ii) Subsequently, there is carried out an adjustment 91 with the self-declared spare times XX of the operators. Taking the reduction width of the forming process operation times
to be S, it is taken that:
S = XX x 0.5 in case uuDev > XX and
S = (uuDev + XX) x 0.5 in case uuDev < XX
In other words, if the self-declared spare times XX are equal to or smaller than the computed deviation uuDev, 50% of the self-declared value is taken to be the reduction width and if XX is greater than uuDev, the average of the two is taken.
By proceeding in this manner, adjustments are made so that process time reduction does not become an excessive load on the person in charge of operations.
i) If the reduced times S in the entire forming shop are found, these are allocated as reduced times of each process, according to the following. A reduced time ratio table 81 is prepared in advance. Reduced time ratio table 81 is one in which the ratios (displayed in per cent) for allocating the reduced times with respect to each of the forming shop processes 60-1, 60-2, ..., and 60-n are determined. Depending on the process operation contents, there are some for which reduction is impossible and some having ample margin for reduction, so the contents are predetermined taking these characteristics into account. E.g., since press compression 60-4 is a numerical value defined by the performance of the machine, the reduction ratio works out to being nearly 0. Also, material set-up 60-2 and alignment 60-3 are processes for which time reduction accompanying learning by operators can be largely expected, so it is possible to set a big ratio.
ii) By multiplying the allocation ratios obtained from reduced time ratio table 81 of each of these processes by the possible reduced time for the entire forming shop and subtracting the same from the existing operation times aa, bb, cc, ..., and nn of each process, the updated operation times aa(l), bb(l), cc(l), ..., and nn(l) are obtained and the forming process operations manual is updated. Further, the numerical value attached to each updated operation time indicates how many times it has been updated.
iii) As for this operation time update, there is assumed a case where the same is carried out multiple times (R times) as the degree of operation learning increases, so there are prepared multiple sets (R sets) of reduced time ratio table 81 of each process. The numerical values of this ratio are determined, taking into account the characteristics of the four similar concerned processes constituting the forming shop.
Proceeding in this way, it is possible, by means of operator learning, to update the
operation time of each process that is stated in the operations manual and maintain the concerned manual.
The following can be cited as results of the present embodiment.
iv) Since the operation times stated in the operations manual are updated in response to the degree of learning of an operator and since manufacturing normalizing the capacity of both the equipment and the operator becomes possible over the long term, there can be expected a profit maximization due to manufacturing activity.
v) Since operation time updates reflecting self-declarations by an operator are carried out, there can be expected an increase in the morale of the operator.
vi) Since it is possible to calibrate the self-declarations of an operator by adapting
the same to actual results, it is possible to avoid superfluous updates. Also, since the operation time of a process for which the operator is in charge is objectively evaluated, it could also become a motivation linked with sincere improvement.
CLAIMS
1. An operations manual correction method correcting an operations manual 8 in
response to the operation of an equipment, comprising:
a designation step designating an item from said operations manual 8 to be
corrected in response to the operation of said equipment;
a collection step collecting information related to the operation of said equipment;
and
a correction step correcting said item on the basis of said collected information.
2. The operations manual correction method according to Claim 1, wherein:
in said designation step, there is further designated a target value related to the operation of said equipment; and
in said correction step, a deviation from said target value of said collected information is computed on the basis of said target value and said operations manual 8 is corrected on the basis of said deviation.
3. The operations manual correction method according to either of Claims 1 and 2,
wherein:
in said correction step, said item is further corrected adding information from a
user of said equipment or a user enjoying a service by means of said equipment.
4. The operations manual correction method according to any of Claims 1 to 3,
wherein:
in said correction step, said item is corrected by executing a simulation on the basis of said collected information and information regarding a specification related to said equipment.
5.The operations manual correction method according to Claim 3, wherein:
in said correction step, the degree of correlation of the information from said user and the capacity of said equipment is found and said item is corrected on the basis of said degree of correlation.
6.An operations manual correction device 100 correcting an operations manual in
response to the operation of an equipment, comprising:
an operations manual creation part 110A designating an item to be corrected in response to the operation of said equipment and creating an initial operations manual;
an interface 130 collecting information related to the operation of said equipment; and
an operations manual correction part HOD correcting said item on the basis of
said collected information.
7. The operations manual correction device 110 according to Claim 6, wherein:
said operations manual creation part further sets a target value related to the
operation of said equipment; and
said operations manual correction part HOD computes a deviation from said target value of said collected information on the basis of said target value and corrects said operations manual on the basis of said deviation.
8. The operations manual correction device 110 according to either of Claims 6 and
7, wherein:
said operations manual correction part HOD further corrects said item adding information from a user of said equipment or a user enjoying a service by means of said
equipment.
9. The operations manual correction device 110 according to any of Claims 6 to 8,
further comprising:
a simulation part HOB executing a simulation on the basis of said collected information and information regarding a specification related to said equipment; and wherein:
said operations manual correction part HOD corrects said item on the basis of the results of said simulation.
10. The operations manual correction device 110 according to Claim 8, wherein:
said operations manual correction part HOD finds the degree of correlation of the
information from said user and the capacity of said equipment and corrects said item on the basis of said degree of correlation.
| # | Name | Date |
|---|---|---|
| 1 | FORM 13 - IP21097.pdf | 2018-08-11 |
| 2 | FORM 1 - IP21097.pdf | 2018-08-11 |
| 3 | ABSTRACT1.jpg | 2018-08-11 |
| 4 | 2077-MUM-2012-OTHER DOCUMENT(10-4-2014).pdf | 2018-08-11 |
| 5 | 2077-MUM-2012-FORM 3(10-4-2014).pdf | 2018-08-11 |
| 6 | 2077-MUM-2012-FORM 3(1-10-2012).pdf | 2018-08-11 |
| 7 | 2077-MUM-2012-FORM 26(12-9-2012).pdf | 2018-08-11 |
| 8 | 2077-MUM-2012-FORM 18(24-7-2012).pdf | 2018-08-11 |
| 9 | 2077-MUM-2012-FORM 1(12-9-2012).pdf | 2018-08-11 |
| 10 | 2077-MUM-2012-ENGLISH TRANSLATION(2-8-2012).pdf | 2018-08-11 |
| 11 | 2077-MUM-2012-CORRESPONDENCE(24-7-2012).pdf | 2018-08-11 |
| 12 | 2077-MUM-2012-CORRESPONDENCE(2-8-2012).pdf | 2018-08-11 |
| 13 | 2077-MUM-2012-CORRESPONDENCE(12-9-2012).pdf | 2018-08-11 |
| 14 | 2077-MUM-2012-CORRESPONDENCE(10-4-2014).pdf | 2018-08-11 |
| 15 | 2077-MUM-2012-CORRESPONDENCE(1-10-2012).pdf | 2018-08-11 |
| 16 | 2077-MUM-2012-FER.pdf | 2018-09-26 |
| 17 | 2077-MUM-2012-AbandonedLetter.pdf | 2019-05-28 |
| 18 | 2077-MUM-2012 - JAPAN PRIORTY - 2-8-2012.pdf | 2023-11-02 |
| 19 | 2077-MUM-2012 - FORM 5- 19-7-2012.pdf | 2023-11-02 |
| 20 | 2077-MUM-2012 - FORM 3- 19-7-2012.pdf | 2023-11-02 |
| 21 | 2077-MUM-2012 - FORM 3- 5-5-2014.pdf | 2023-11-02 |
| 22 | 2077-MUM-2012 - FORM 2- 19-7-2012.pdf | 2023-11-02 |
| 23 | 2077-MUM-2012 - CORRESPONDENCE 24-7-2012.pdf | 2023-11-02 |
| 24 | 2077-MUM-2012 - CORRESPONDENCE 19-7-2012.pdf | 2023-11-02 |
| 25 | 2077-MUM-2012 - CORRESPONDENCE - 5-5-2014.pdf | 2023-11-02 |
| 1 | search_20-09-2018.pdf |