Claims:We Claim:
1. A system (100) for remote monitoring of real time location of manpower at a site, the system (100) comprising:
- a hardware device (102) having
a plurality of motion sensors (208) for detecting movement of manpower at the site,
a processor (202) for processing data received from the plurality of motion sensors (208),
a gateway bridge (210) configured to communicate data received from the processor through a communication interface (206);
- a processing device (104) configured to receive information from the hardware device (102), wherein the processing device (104) includes
an identification device (212) for storing bibliographic details of an employee along with an employee identification number,
a monitoring device (214) for recording real time data received from the plurality of motion sensors (208),
a data processing device (216) for processing real time data upon receiving from the monitoring device (214),
a machine learning device (218) for predicting requirement of manpower at the site upon receiving processed data from the data processing device (216); and
- a storage device (106) configured to store data obtained from the processing device (104),
- wherein the hardware device (102) communicates with the processing device (104) through a long range wide area network (LoRaWAN) and a Bluetooth low energy (BLE) in order to share details of the manpower and the site.

2. The system (100) as claimed in claim 1, wherein the hardware device (102) includes a wearable device worn by an employee to be monitored, in which the wearable device includes neckband, wristband.

3. The system (100) as claimed in claim 1, wherein interface between the Gateway Bridge (210) and the processor (202) is a Long Range Wide Area Network (LoRaWAN), covering distance in the range of 1-2 kilometers.

4. The system (100) as claimed in claim 1, wherein the Bluetooth low energy (BLE) is used for sharing information of the employee and the site at a local level.

5. The system (100) as claimed in claim 1, wherein the long range wide area network (LoRaWAN) is used for sharing information of the employee and the site to a long range (LoRa) gateway (306).

6. The system (100) as claimed in claim 1, wherein data received from the hardware device (102) and the processing device (104) are communicated to a central server (112) through communicating networks (110).

7. The system (100) as claimed in claim 6, wherein the central server (112) stores and/or retrieves information from a database (114) for future correspondences.

8. A method of monitoring real time location of manpower at a site using the system (100) as claimed in claim 1, the method comprising:
- authenticating an identity of an employee at a site using an identification device (212);
- activating a plurality of motion sensors (208) disposed in a hardware device (102) for fetching location of labor on positive authentication;
- tracking and monitoring location of employees using a long range wide area network (LoRaWAN) and a Bluetooth low energy (BLE) technique;
- collecting and concentrating data at a long range (LoRa) gateway (306) from a plurality of long range (LoRa) end nodes;
- consolidating data from the long range (LoRa) gateway (306) to a central server (112); and
- activating a machine learning device (218) for predicting requirements of manpower in future.

9. The method as claimed in claim 8, wherein the method includes installation of a plurality of fixed long range (LoRa) nodes (304-1, 304-2) at a multitude of locations in the site while Bluetooth low energy (BLE) tags (302-1, 302-2, 302-3, 302-4) are assembled in the hardware device (102) given to the employees.

10. The method as claimed in claim 8, wherein the method includes installation of a plurality of fixed Bluetooth low energy (BLE) beacons (310-1, 310-2) at a multitude of locations in the site while a plurality of mobile long range (LoRa) nodes (308-1, 308-2, 308-3, 308-4) are assembled in the hardware device (102) given to the employees.

Dated this 1st day of March, 2022

SOMA RANI MISHRA
PATENT AGENT
IN/PA – 1159
OF L. S. DAVAR & CO.,
APPLICANT’S AGENT

, Description:A SYSTEM FOR REMOTE MONITORING OF REAL TIME LOCATION OF MANPOWER AT A SITE

FIELD OF THE INVENTION

[0001] The present disclosure in general relates to a system to monitor and track man power at a site in a remote manner. More particularly, the present disclosure relates to the system which manages real time status of manpower deployed at a construction site by utilization of a Long Range Wide Area Network (LoRa WAN) and a Bluetooth Low Energy (BLE).

BACKGROUND OF THE INVENTION

[0002] The background represents, information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referred is prior art.
[0003] The evolution of wireless technology has provided the path to the revolution of an Internet of Things (IoT). The IoT technology has opened up endless integrated smart and intelligent devices and application, which facilitates in tracking and operating such devices from everywhere and anywhere. The IoT-based applications which perform monitoring and tracking of devices, human or animal activities, usually adopt different short-range communication technologies such as a Bluetooth, a Wi-Fi to transmit the data to a central server or into a mobile phone of an intended user.
[0004] However, these communication systems have certain limitations such as, they consume a large amount of energy and also signal coverage is to a restricted area. Thus these techniques do not suffice efficiently for some specific IoT based applications, like tracking of worker employed at the site where required range can be up to 2 kilometers and also a continuous monitoring is required.
[0005] Apart from limited range of accessibility server security issues related to capture, process and storage of the data persists. In view of the above discussion, it is observed that there is a need to develop a system that can monitor and track the status of man power for wider area securely with low energy consumption.

PRIOR ARTS OF THE INVENTION

[0006] There are some systems/methods known in the art regarding real time management of manpower in industries. These are discussed herein below:

[0007] CN104361445B titled “Worker’s real-time management system and management method”, relates to, a system and a method for worker management using a first terminal machine, a second terminal machine, a server, a service database and a message processing module. The system uses GPRS, CDMA, ADSL or broadband network system for data communication.
[0008] CN103763680 titled “Indoor positioning and tracking method and system based on signal propagation” relates to a kind of indoor positioning method for tracing based on signal propagation characteristics. The invention discloses an indoor positioning and tracking method and system based on signal propagation. The method comprises a pre-storing step, a judging step, a determining step and a calculating step. In the pre-storing step, position information of an access point arranged in an object region is presorted into a mobile terminal. In the judging step, the current movement condition of a user is judged according to a variation trend of an RSSI data sequence in the movement process of the user. In the determining step, the movement direction of the user is determined according to acquired direction data in the mobile terminal. In the calculating step, the distance between the user and the related access point is calculated, the current position of the user is determined based on the current movement condition and current movement direction of the user, and the position of the user is tracked. According to the indoor positioning and tracking method and system based on the signal propagation, the position of a user is tracked by processing signal strength change information in the movement process of the user, positioning accuracy is improved, and positioning complexity is lowered, and the system can be quickly arranged on a universal mobile device and network infrastructure.
[0009] AU 2019229392 B2 titled “Self-Configurable Tracking Tags and Methods of use” relates to, a self-configurable tracking tag comprising a processor, a transceiver communicatively coupled with the processor, and a movement sensor communicatively coupled with the processor. It also includes a memory communicatively coupled with the processor, the memory storing machine-readable instructions that, when executed by the processor control the self-configurable tracking tag to periodically transmit, from the transceiver at a ping rate, a plurality of pings detectable by an object tracking system. The instructions also determine movement of the self-configurable tracking tag using the movement sensor, and then ping rate is adjusted based on the determined movement. The machine-readable instructions, when executed by the processor, may control self-configurable tag to adjust ping rate according to one or more of a simple linear relationship that may include a threshold relationship, a weighted relationship, and a non-linear relationship between the ping rate and the determined movement.
[0010] US9445241B2 titled “Location Tracking for Mobile Device Using Wi-Fi Access Point Cluster” relates to, a method for determining a radio frequency (RF) fingerprint mapping to an indoor floor plan for an indoor area. The method includes clustering Wi-Fi access point devices deployed in the indoor area into groups of Wi-Fi access point devices based on RF fingerprint data received by at least one reference point device. The method includes selecting a Wi-Fi access point device from each group of Wi-Fi access point devices and determining a RF fingerprint based on the selected Wi-Fi access point devices. The method includes receiving request for a location associated with a mobile device. The request includes a sampled RF fingerprint associated with the mobile device. The method also includes comparing the RF fingerprints based on selected Wi-Fi access point devices with the sampled RF fingerprint associated with the mobile device to determine a location of the mobile device within the indoor area.
[0011] It is evident from the prior art that, most man power tracking systems found are either limited with the use of GPRS, CDMA technologies for data communication or they are relatively complex to operate. These techniques are relatively costly and includes monthly recurring charges. Moreover, it is not possible to link multiple devices to cover a large area using proposed techniques at a relatively low consumption of power. In pursuit of this, the present disclosure focuses on development of a system which can effectively manage, monitor and track man power deployed at various locations of the construction site. Thus, improving the project efficiency and also reducing the project cycle time.

OBJECTIVES OF THE INVENTION
[0012] It is an object of the present subject matter to overcome the aforementioned and other drawbacks existing in the prior art systems.
[0013] It is a principal object of the present subject matter to design a system that is able to track and monitor the real time status of man power deployed at a construction site effectively.
[0014] It is another significant object of the present subject matter to design the system that can be operated using LoRaWAN and BLE technique for tracking and monitoring of manpower.
[0015] It is another object of the present subject matter to design a system for proper management of man power by using an advanced motion sensor and a data communication technique.
[0016] It is another object of the present subject matter to design a system comprising a prediction model for predicting the requirement of man power in future.
[0017] It is still another object of the present subject matter to design a system for efficient management of man power using machine learning tools and methods.
[0018] It is yet another object of the present subject matter to design a system for having a secure data transmission.
[0019] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taking into consideration with accompanied drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY OF THE INVENTION

[0020] The present invention relates to a system which uses advanced wireless communication technologies like Long Range Wide Area Network (LoRaWAN) and Bluetooth Low Energy (BLE) to track the real time location of man power in a site. The system is also utilized to manage and monitor the manpower requirement in the site. The system also uses the data acquired to predict the requirement of manpower on a particular location based on the work completion activities.

[0021] According to an embodiment of the present invention, there is provided a system for remote monitoring of real time location of manpower at a site. The system comprises of a hardware device having a plurality of motion sensors for detecting movement of manpower at the site, a processor for processing of data received from the plurality of motion sensors, a gateway bridge configured to communicate data through a communication interface, a processing device configured to receive information from the hardware device, where the processing device includes an identification device for storing bibliographic details of an employee along with an employee identification number, a monitoring device for recording real time data received from the plurality of motion sensors, a data processing device for processing real time data upon receiving from the monitoring device, a machine learning device for predicting requirement of manpower at the site upon receiving processed data from the data processing device and a storage device configured to store data obtained from the processing device. Herein, the hardware device communicates with the processing device through a long range wide area network (LoRaWAN) and a Bluetooth low energy (BLE) in order to share details of the manpower and the site.

[0022] In an aspect, in the system, the hardware device includes a wearable device worn by the employee to be monitored, in which the wearable device includes neckband, wristband.

[0023] In an aspect, in the system, interface between the Gateway Bridge and the processor is a Long Range Wide Area Network (LoRaWAN), covering distance in the range of 1-2 kilometers.
[0024] In an aspect, in the system, the Bluetooth low energy (BLE) is used for sharing information of the employee and the site at a local level.
[0025] In an aspect, in the system, the long range wide area network (LoRaWAN) is used for sharing information of the employee and the site to a long range (LoRa) gateway.
[0026] In an aspect, in the system, data received from the hardware device and the processing device are communicated to a central server through communicating networks.
[0027] In an aspect, in the system, the central server stores and/or retrieves information from a database for future correspondences.
[0028] In an aspect, there is further provided a method of monitoring real time location of manpower at a site. The method comprises authenticating an identity of an employee at a site using an identification device, activating a plurality of motion sensors disposed in a hardware device for fetching location of labor on positive authentication, tracking and monitoring location of employees using a long range wide area network (LoRaWAN) and a Bluetooth low energy (BLE) technique; collecting and concentrating data at a long range (LoRa) gateway from a plurality of long range (LoRa) end nodes, consolidating data from the long range (LoRa) gateway to a central server and activating a machine learning device for predicting requirements of manpower in future.
[0029] In an aspect, the method includes installation of a plurality of fixed long range (LoRa) nodes at a multitude of locations in the site while Bluetooth low energy (BLE) tags are assembled in the hardware device given to the employees.
[0030] In an aspect, the method includes installation of a plurality of fixed Bluetooth low energy (BLE) beacons at a multitude of locations in the site while a plurality of mobile long range (LoRa) nodes are assembled in the hardware device given to the employees.
[0031] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0032] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING(S)

[0033] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which

[0034] Figure 1 illustrates an exemplary system for demonstrating real time status of man power in accordance with an exemplary embodiment of the present disclosure;

[0035] Figure 2 illustrates an exemplary block diagram of a hardware implemented in the system for processing in accordance with an exemplary embodiment of the present disclosure;

[0036] Figure 3 (a)–3 (b) illustrate an exemplary flow chart illustrating operation of the system by two different techniques in accordance with an exemplary embodiment of the present disclosure;

[0037] Figure 4 illustrates an exemplary method for working of the system in accordance with an exemplary embodiment of the present disclosure.

[0038] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION OF INVENTION WITH REFERENCE TO THE DRAWINGS OF THE PREFERRED EMBODIMENTS

[0039] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.

[0040] While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof have been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

[0041] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.

[0042] The present disclosure relates to development of a system (100) for monitoring real time status of manpower at a construction site. The proposed system (100) operates at a very low power and primarily focuses on tracking and managing manpower by using a LoRa WAN and a BLE technology by using a hardware device. The hardware device is wearable and may include and is not limited to a wristband or a neckband that is given to the manpower operating at a remote site for efficient monitoring. The structural and functional attributes of the system (100) have been detailed in subsequent sections.

[0043] Figure 1 illustrates an exemplary system (100) implemented at a site for proper monitoring of manpower. In an aspect, an exemplary architectural layout of the present disclosure can include the system (101) installed at the construction site for monitoring of manpower by cognitive means. In an aspect, a network (110) is bilaterally connected to the system (101), a central server (112), a database (114) and also to an output device (108).

[0044] In an aspect, herein, the system may include the hardware device (102), a processing device (104) and a storage device (106). The functioning of these devices are detailed in subsequent sections.
[0045] In an aspect, the data recorded by the system (101) is transmitted to the central server (112) through communicating networks (110). The communicating network (110) may include LAN 2G, 3G, 4G, 5G, LTE or likes. The central server (112), on the other hand keeps a track of the received information in the database (114) to be updated regarding information of the manpower working at a designated construction site. The information may include details of an individual, shift of work, duration of work and details of construction site.

[0046] Further in an aspect, the system may include an output device (108) which can generate a hardcopy or simply display the manpower details for the particular site in date wise manner for official records.

[0047] Figure 2 illustrates various components present in the system (101) in accordance with an exemplary embodiment of the present disclosure. The system (101) includes, but is not limited to, processors, memory elements, one or more sensors and the processing devices. In an aspect, as already mentioned, the system (101) is incorporated with the hardware device (102), the processing device (104) and the storage device (106).

[0048] In an aspect, the hardware device (102) can be a wearable device which is configured with a memory (204) capable of storing basic information of the worker transmitted through a plurality of nodes, a plurality of motion sensors (208) which senses position and location of the worker/employee, a processor (202) for processing of data, a gateway bridge (210) to communicate data received to the processing device (104) through a communication interface (206).

[0049] In an aspect, the processor(s) may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, logic circuitries, and/or any devices that manipulate data based on operational instructions. Among other capabilities, the one or more processor(s) are configured to fetch and execute computer-readable instructions stored in the memory of the system (101). The memory may store one or more computer-readable instructions or routines, which may be fetched and executed to create or share data units over a network (110). The memory may include any non-transitory storage device including, for example, volatile memory such as RAM, or non-volatile memory such as EPROM, flash memory, and the like.

[0050] In an aspect, the gateway bridge (210) provided in the system (101) includes an interface between the processor (202) and the communication interface (206). It is to be mentioned in this context that the interface between the Gateway Bridge (210) and the processor (202) is a Long Range Wide Area Network (LoRaWAN), which can work over a distance of 1-2 kilometers.

[0051] In an aspect, a communication interface (206) provided in the system (101) may include a variety of interfaces, for example, interfaces for data input and output device/s referred to as I/O devices, interfaces for communication device, storage devices, user interfaces and the like. The interface (206) may also provide a communication pathway for one or more components of the system (101). Examples of such components include, but are not limited to, processing device(s) and data storage.

[0052] In an aspect, the processing device (104) present in the system (101), is configured with an identification device (212) which authenticates the worker/employee by verifying identity details already recorded when the worker/employee is at the construction site. The identity details may include simple bibliographic details of manpower along with an employee identification number.

[0053] In an aspect, the processing device (104) includes a monitoring device (214) that records real time data received from the plurality of motion sensors (208). Moreover, there is provided a timer in the monitoring device (104) to record the duration for which an individual is engaged in the particular construction site. The functioning of the monitoring device (214) along with associated hardware is detailed with reference to Figure 3 in later stage.

[0054] In an aspect, the information obtained by the monitoring device (214) is processed by a data processing device (216). This is then fetched to a machine learning device (218) for prediction of manpower required in future.

[0055] In this context, it is to be noted that the wearable device uses advanced motion sensors and accelerometers to detect the worker movements or any emergency situation at the site.

[0056] In an aspect, the processing devices(s) (104) may be implemented as a combination of hardware and programming device(s) (for example, programmable instructions) to implement one or more functionalities of the processing device(s). In examples described herein, such combinations of hardware and programming may be implemented in several different ways. In one example, the programming for the processing device(s) may be processor executable instructions stored on a non-transitory machine-readable storage medium and the hardware for the processing device(s) may include a processing resource (for example, one or more processors), to execute such instructions. In other examples, the processing devices(s) may be implemented by electronic circuitry.

[0057] Referring to Figure 3, the system (101) may be operated using two principles of operation.

[0058] In an embodiment, Figure 3 (a) represent an exemplary flow diagram indicating operation of the system (101) comprising, a BLE tag (302), preferably a wearable device is provided to the workers at the construction site which enables tracking of objects used in server based procedures that is, position is determined on servers. Further, a plurality of fixed LoRa nodes (304) are installed at different departments and shares data to a LoRa gateway (306). This shared information is processed through the processing device (104) and data is stored in the storage device (210).

[0059] In an embodiment of present invention, the plurality of fixed LoRa devices (304) scans for the different BLE tags (302) nearby and stores their MAC address and other information shared. After set predefined searching duration the plurality of fixed LoRa devices (304) shares stored data in number of packets depending on its Spreading Factor (SF) or Data Rate (DR) to the LoRa Gateway (306).

[0060] In an aspect, the fixed LoRa nodes (304) are configured as Class C setting so that various parameters of fixed LoRa node (304) can be changed instantly using developed web interface via suitable downlink. This Class C setting, aids in sending messages and information to devices at any time.

[0061] In an aspect, transmission power of the BLE Tag (302) is fixed preferably at 4dBm which gives the range of about 70-90 meters depending on their nearby environment. The signal scanning interval is fixed at 10 seconds, means information/data is advertised by the BLE tags (302) after every 10 seconds of interval. Using this configuration expected battery life is around 12-15 months.

[0062] In another embodiment of the present disclosure, as shown in Figure 3(b) the system (101) comprises, a mobile LoRa node (308), preferably a wearable device which has a small modular component that enables tracking of location in real time. Further, a BLE Beacon (310) is installed at various departments for transmitting packets of data that can be picked by compatible receiving devices. The LoRa gateway (306) collects data from these end nodes. This shared information is processed through the processing device (104) and data is stored in the storage device (106). The mobile LoRa node (308) scans for the BLE beacon (310) nearby, after set predefined frequency. The mobile LoRa node (308) sends MAC address of the BLE beacon (310), its GPS location, accelerometer reading and other information to LoRa Gateway (306). In the mobile LoRa node (308) there is provision of alarm button, during which data communication duration will reduce to 10 seconds.

[0063] In an aspect, the mobile LoRa nodes (308) are configured with Class A, that is most energy efficient thus resulting in longer battery life. Moreover, transmission power of the BLE beacon (310) is fixed preferably at 4dBm which gives range of about 120-140 meters as per nearby environment, while broadcasting interval is fixed at 10 seconds. Using this configuration expected battery life is more than 2 years.

[0064] In an aspect, ideally the LoRa node is always connected to an AC power supply and therefore the internal battery of the LoRa node is required when the AC supply is not working. In this regard, the internal battery life of the LoRa node is approximately 7 days.

[0065] In an embodiment of the present disclosure, the LoRa gateway (306) is fixed with a 9 dbm antenna to increase the coverage area.

Working of the invention
[0066] The working of the system (100) is illustrated with reference to Figure 4.

[0067] Figure 4 illustrates an exemplary method (400) implemented to operate the system (100) proposed in the present disclosure. The order in which the method (400) is described is not intended to be construed as a limitation, and any number of the described method blocks may be combined in any order to implement the method (400), or an alternative method. Furthermore, method (400) may be implemented by processing device(s) or computing device(s) through any suitable hardware.

[0068] At block (401), the method includes authenticating an identity of worker/employees at construction site by the identification device (212).

[0069] At block (402), the method includes activating sensors disposed in a hardware device (102) for fetching location of worker on positive authentication.

[0070] At block (403), the method includes tracking and monitoring the location of worker/employees by using LoRa WAN and BLE technology.

[0071] In an aspect, the present exemplary system (101) uses BLE technology to transfer the location/ worker details to LoRa nodes, which is a power-efficient version of a Bluetooth. It repeatedly transmits a constant signal to other devices. It can broadcast a radio signal that is made up of a combination of letters and numbers transmitted on short, regular intervals. A Bluetooth-equipped device including a smartphone, gateway, and access point or in present case a fixed LoRa node (304) can identify a beacon or tag once it is in range.

[0072] At block (404), the method includes collecting and concentrating data at LoRa gateway from end nodes.

[0073] In an aspect, the LoRa gateway (306) receives data from the LoRa nodes in form of data packets. The size of the data packet varies based on the distance between the LoRa nodes and LoRa gateway (306). This data is transferred to the network server (110) from the LoRa gateway (306). The network server (110) manages entire network, and dynamically controls the network parameters to adapt the system to ever-changing conditions, and establishes secure 128-bit AES connections for the communication of end to end data (from LoRaWAN end device to the end users Application) as well as for the control of traffic that flows from the LoRaWAN end device to the network (110). The network server (110) ensures the authenticity of every sensor on the network and the integrity of every message. The network (110) transfers the data to the central server (112) which is responsible for securely handling, managing and interpreting sensor application data. They also generate all the application-layer downlink payloads to the connected end devices.

[0074] At block (405), the method includes consolidating data from the Lora gateway (306) and uploading to the central server (112) for processing, machine learning and predicting requirement of manpower in future.

[0075] In an aspect of the present exemplary system (100), the central server (112) sends the data to the database (114) using Message Queuing Telemetry Transport (MQTT) protocol. In the data processing device (216), an application is developed using scripting language which takes raw data from the central server (112) by subscribing required LoRa nodes via MQTT protocols. After that it converts raw data into required relevant information and store the same in the database (114) along with its time stamps. The exact location of the worker is fixed using RSSI (Received Signal Strength Indication) value of the worker tags. The application also changes the data stored as employee’s moves from one location/department to another. It also utilized to send downlinks to the LoRa Nodes to get required info or to change any parameter by taking commands from user via the interface (206).

[0076] At block (406), the method includes storing of data on data storage device.

[0077] In an aspect of the exemplary system (100) the data stored in the database (114) is used by the machine learning device (218) to process and predict manpower requirements for a particular construction site. The machine learning device (218) can add a new LoRa end devices, a BLE, location, contractor and workers and can assign tags, Beacon and a LoRa end devices to worker or location. The system (100) may be equipped with a graphical user interface where home page of the application may shows real time location and number of workers at particular location. This can be recorded in terms of hardcopy by the output device (108) installed in the system (100). The machine learning device (218) is also used to change any parameter of the LoRa end devices by downlink. The machine learning device (218) also controls an alarm for a battery and disconnection of the LoRa nodes. Various types of reports can be generated to assess the performance based on location, number of contractor or worker, like average working hours, average number of workers present in specific duration of date using the information obtained from the machine learning device (218).

Test Results

[0078] The system (100) is implemented to track works at 10 different locations. The movement of the workers is precisely tracked. The information of the worker tag within the read range of BLE node (80-100 meters) is communicated to the gateway bridge (210)
(210) using LoRa communication (1-2 Kms), which in turn shares this information to the central server (112) through LAN for further processing. The node scans for the worker information for around 2-3 minutes and afterwards it sends gathered information to the LoRa gateway (306). If one worker tag is read by two or more nodes then final location of the worker tag is decided by signal strength of that worker tag with each node. The system (100) can track more than 3000 workers simultaneously. To track more workers more gateway bridges can be added. The system (100) can track works with an accuracy of approximately 100 meters.

[0079] Advantages of the invention

All in all, the system (100) described in the present disclosure is having the following advantages:
a) The fundamental advantage of the system (100) is to provide large range coverage.
b) The system (100) analyzes effective tracking, management, monitoring of worker/employee.
c) The system (100) is easy to implement.
d) The system (100) provides real time status.
e) The system (100) reduces cycle time.
f) The system (100) is cost effective.
g) The system (100) facilitates manpower requirements at a construction site using prediction approach.
h) The system (100) has ultra-low power requirements, which allows for the creation of battery-operated devices that can last for up to 12 to 15 months.
i) The system (100) has been optimized to limit the data traffic at the Gateway Bridge (210).

[0080] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various systems that, although not explicitly described or shown herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.

[0081] Although embodiments for the present subject matter have been described in language specific to package features, it is to be understood that the present subject matter is not necessarily limited to the specific features described. Rather, the specific features and methods are disclosed as embodiments for the present subject matter. Numerous modifications and adaptations of the system/device of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the scope of the present subject matter.

[0082] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.).

[0083] In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

[0084] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.