FIELD OF THE INVENTION
The present invention consists of an automatic compensation system which acts
when the available signal in “measuring output” attains its maximum level.
BACKGROUND OF THE INVENTION
The sensors are installed on the platform, which is used to provide information
pertaining to the angle and position at which vehicle like aircraft is flying. The sensors
like gyro & accelero are meant for stabilizing the platform & position. Once the platform is
stabilized, the electrical force & acceleration applied to the sensors is used to calculate
the angle and position at which the vehicle like aircraft is flying. In production of above
sensors low power measurement & its trace is one of the specific requirement of testing.
SUMMARY OF PRESENT INVENTION
The present invention consists of an automatic compensation system which acts
when the available signal in “measuring output” to attains its maximum level. At this
moment there is a control logic, which requires for the Comparison voltage generator to
select a new value. When the compensation is carried out, it shows the mean value of
the consumed power on the digital display device present on the front panel & at the test
panel. Under the digital display device, it is having a push- button which enables, at each
moment, to demand to the comparison voltage generator to carry out a new
compensation.
In accordance with one aspect of present invention is to provide an automatic
compensation system which acts when the available signal in “measuring output” attains
its maximum level.
In accordance with yet another aspect of present invention is to provide capability
to conceive the analysis of low variation of power.
In accordance with yet another aspect of the present invention comprises a
system of “loop” carried out around the comparison voltage generation. The signal is
amplified then filtered before being available in measuring output on the display system
& measurable on test points.
In accordance with yet another aspect of the internal DC voltage of present
invention is very low.
In accordance with yet another aspect of the present invention indicates the value
of Gain & filters with the help of green LEDs.
In accordance with yet another aspect of the present invention is very compact &
rugged measuring equipment.
Annexure‐II
In accordance with yet another aspect, present invention consists of a digital
display device which visualizes the mean power of Compensation and a push-button.
BRIEF DESCRIPTION OF THE DRAWINGS
The features and advantages of the present invention will become more apparent
and descriptive in the description when considered together with figures presented:
Fig. 1 is a System Level Block Diagram of DWM
Fig. 2 is a Schematic diagram of DWM
DETAILED DESCRIPTION
The Low Power Measuring Equipment is an automatic compensation system
which acts when the available signal in “measuring output” to attains its maximum level.
At this moment there is a control logic, which requires for the Comparison voltage
generator to select a new value. When the compensation is carried out, it shows the
mean value of the consumed power on the digital display device present on the front
panel & at the test panel. Under the digital display device, it is having a push- button
which enables, at each moment, to demand to the comparison voltage generator to carry
out a new compensation.
On the front panel there are various indications, see the fig. 1:
Saturation frame: it enables to visualize an exceeding of an input signals range:
voltage and current by red LEDs.
Power frame: it consists of a digital display device which visualizes the mean power of
Compensation and a push-button.
Meaning frame: it consists of
- A luminous ramp which visualizes the “measuring output” signal, in two
pole mode and with a logarithmic scale.
- Two terminals: ” front panel measuring output”
- The green L.E.D. which describes the gain and the value of the filter (for
the measuring output) selected.
- Main frame: it consists of a L.E.D. of main presence and an On/Off switch.
- Gain selection and time constant on analog card by 2 switches
Characteristics:
a) Type of the input signals:
- Any alternative wave shape in the limit of the pass band.
- Input levels for wattmeter up to10W
- V max. = 40V between phases
- I max = 500mA
b) Accuracy and linearity:
- Max. Total error 0, 5% of the full scale
- Linearity 0.1% of the full scale
- Mean power display ±1%
c) Pass band:
- Error <1% of the full scale from 100Hz to KHz
d) Stability:
- In term of the temperature: ±0.005%/ ºC of the full scale from +15 ºC to 35ºC
- In the time: maintain accuracy up to 01 year.
e) Max. Power:
- 10 W for standard instrument, in the limit of maximum input levels.
- Compensation limit: maximum power
f) Level of measuring output:
. ±10V corresponding to:
±10w for gain 1 sensitivity = 1v/w
±1w for gain 10 ,, = 10v/w
± 0.1w for gain 10 ,, = 100 v/w
g) Measuring filter:
- Time constant: 0 & 1 s, 1s & 10s
- Accuracy ±7%
h) A.C. Power supply
Fig. 2 described for the measurement of low power.

WE CLAIMS:-
Accordingly, the description of the present invention is to be considered as illustrative only and is for the purpose of teaching those skilled in the art of the best mode of carrying out the invention. The details may be varied substantially without departing from the spirit of the invention, and exclusive use of all modifications which are within the scope of the appended claims is reserved. We Claim

1. The present invention consists of an automatic compensation system, which is use for the very low power measurement of the sensors. It consists of:
- Internal customized PCB,
- Internal looms,
- LEDs for Gain & Filter Indication,
- Low voltage DC Power supply,
- Digital display system for visualization,
- Test Points on the system,
- Remote interface system &
- Graphical System

2. The Low Power Measuring Equipment of claim 1 wherein, it provides an automatic compensation system which acts when the available signal in “measuring output” attains its maximum level.

3. The Low Power Measuring Equipment of claim 1 wherein, it provides capability to conceive the analysis of low variation of power.

4. The Low Power Measuring Equipment of claim 1 wherein, the present invention comprises a system of “loop” carried out around the comparison voltage generation. The signal is amplified then filtered before being available in measuring output on the display system & measurable on test points.

5. The Low Power Measuring Equipment of claim 1 wherein, the present invention indicates the value of Gain & filters with the help of green LEDs.

6. The Low Power Measuring Equipment of claim 1 wherein, the present invention is capable to provide the Pass band signal with Error <1% of the full scale from Hz to KHz.

7. The Low Power Measuring Equipment of claim 1 wherein, the present invention is capable to maintain the accuracy without calibration for 12 months.

8. The Low Power Measuring Equipment of claim 1 wherein, it is compact & rugged test equipment.

9. The Low Power Measuring Equipment of claim 1 wherein, it is housed in a 19” rack mount system. ,TagSPECI:As Per Annexure-II