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(Русский) Портативный домашний кинотеатр

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Load Cell Amplifier

Printed circuit board and design of the case with a sealant around a cover were developed. The price was an important criterion; therefore cable inputs with IP65/66 were installed instead of sockets. Precision operational amplifiers with multiway low-noise potentiometers were installed on the board. Output current for the bridge circuit and rate of signal amplification and its zero-offset can be set. The required cost price and a very low noise level were achieved. The task was implemented in time; 10 prototypes were produced.

Inclinometer iSensor-M

2 samples of device with aluminium alloy case with different anodizing depth were produced. The case and boards were made in China. Sensitive elements were chosen on the basis of MEMS-technology with very low spectral noise density. Software for the controller has functions of digital signal processing (filtration, interpolation, calculation of vectors position, calibration and digital compensation of temperature). The device has provided the required accuracy and frequency band and has passed certification.

Reflectometer

2 samples of the device were produced. Design of the case and the keyboard was developed. The case is made of black and white ABS-plastic with silicone holder. The device can be hold and operated by one hand. 4 layer board with high frequency analogue and digital parts on the basis of PIC32MZ controller was developed. The display with very low energy consumption from Sharp allowed to increase duration of device operation on one battery charge up to one year. Components from Analog Device allowed to implement both measurement methods (TDR and DC) with high accuracy (error of 0,1 %). The device has successfully passed certification and metrological approval. 2 patent applications were submitted in the course of development.

(Русский) Портативный домашний кинотеатр
Task
Elapsed Time
Development Cost
Certification
Load Cell Amplifier
Task
Development of a converter for load cells' signals for force tranducers with bridge measurement circuit.

Input parameters:
1. Input bridge resistance from 100 to 800 Ohm,
2. Regulated excitation current strength up to 20 mA,
3. Measurement error not worse than 0,1 % in a range of 10С... 30С,
4. Class of climatic version - IP65
5. Output signal - 0... 10V, 4... 20 mA.
6. Operating temperature range from -40 to +70С.
7. Working band - 20 Hz.
8. The industrial cost price should not exceed 40 USD for a batch of 1000 pcs.
Elapsed Time
270 man-hours
Development Cost
22,8 thousand USD
Certification
2,100 USD
Inclinometer iSensor-M
Task
Development of 2-axial gauge of measurement of inclination for high-precision measurements.

Input parameters:
1. Range of inclination measurement on X/Y axis -40 … + 40 degrees,
2. Absolute error of measurement of less than 0,02 degrees in the range of 10С... 30С,
3. Resolution of 0,005 degrees,
4. Regulated measurement band from 20 Hz to 0,1 Hz,
5. Shock-resistant and wearproof case.
6. Possibility of connection of external SSI-encoder.
7. Class of climatic version - IP66
8. Output signal - digital protocol RS485.
9. Operating temperature range from -40 to +70С.
Elapsed Time
270 man-hours
Development Cost
22,800 USD
Certification
2,400 USD
Reflectometer
Task
Development of a modern device for measurement of cable length and search of defects (reflectometer). Input parameters:

1. Measurement methods: TDR (method of pulse reflectometry) and DC (measurement of cable resistance).
2. Measurement of cable length up to 10000 m.
3. Error of measurement of not worse than 0,2 %.
4. Wave resistance of cables from 20 to 500 Ohm,
5. Measurement of single and multiple-core cables length.
6. Monitor with the high resolution and illumination.
7. Casing for protection against hits and falling.
8. Battery operation up to 1 month.
9. Transmission of data from internal memory via Bluetooth.
10. Class of climatic version - IP44
11. Operating temperature range from -20 to +50С.
12. The industrial cost price should not exceed 100 USD for a batch of 1000 pcs.
Elapsed Time
850 hours
Development Cost
47,800 USD
Certification
4 thousand USD