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Micro-power wireless digital transmitter

A transmitter, micro power consumption technology, applied in the direction of force/torque/power measuring instrument calibration/test, measuring device, instrument, etc., can solve the problems of cumbersome adjustment of magnification, large offset voltage, high cost, etc. Equipment technical performance, low temperature drift and offset voltage, the effect of ensuring accuracy

Inactive Publication Date: 2011-11-16
704TH RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The analog weak voltage amplification uses a discrete op amp, which has a bulky structure, high power consumption, large offset voltage, and cumbersome adjustment of amplification factor;
[0004] 2. Most of its analog-to-digital conversion parts use voltage-frequency converters (VFC), which have low performance stability and are susceptible to ambient temperature drift and external radio magnetic field interference. The hardware needs to spend a lot of redundant design and compensation efforts;
[0005] 3. In terms of carrier modulation, most of them use average power modulation (frequency modulation), which consumes a lot of power and has low efficiency;
[0006] 4. The modulation method belongs to the analog method, and its accuracy and anti-interference performance need to strengthen the design of reliability, thereby increasing the cost of research and development;
[0007] 5. The power consumption of the whole machine is generally 50mw ~ 1.3w, and the system function scalability is poor

Method used

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Embodiment Construction

[0014] refer to figure 1 , the micro-power wireless digital transmitter includes an instrument integrated amplifier 1, a single-chip microcomputer 2, a carrier conditioning module 3, and the transmitter is also respectively connected with a sensor (not shown) and a power supply 4, and each composition can be assembled and installed in a box.

[0015] The instrument integrated amplifier 1 includes an instrument amplifier integrated chip 11 and a converter 12; the instrument amplifier integrated chip 11 is a differential input instrument amplifier integrated chip (AD620) that adopts dual power supply balanced power supply for weak signals in terms of conditioning and transformation principles. It is characterized by small size, low power consumption, extremely low temperature drift and offset voltage. The input end of the instrumentation amplifier integrated chip 11 is connected to a sensor (not shown in the figure), and its output end is connected to a converter 12. The instrume...

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PUM

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Abstract

A micro-power wireless digital transmitter mainly solves technology problems of reducing transmitter power consumption and the like. A technology scheme adopted in the invention comprises the following steps that: a sensor of the micro-power wireless digital transmitter is connected with an instrument integration amplifier which is used to realize programmable amplification and synchronous serial output of a sensor signal; the instrument integration amplifier is connected with single chip microcomputer read data and performs carrier wave conditioning; an output terminal of the single chip microcomputer is connected with a carrier wave conditioning module which excites carrier wave emission to a successfully measured output signal. The invention is suitable for a measurement guarantee calibration device, a telemetry power meter and other similar fields.

Description

Technical field: [0001] The invention relates to a test and standard of an instrument for measuring torque, in particular to a transmitter for measuring torque. Background technique: [0002] The torque measurement transmitter is a key transmission component used to wirelessly measure the static and dynamic load transmission characteristic strain (torque) on the rotating shaft. The existing transmitters for torque measurement, except for high-voltage power supply, high power consumption, etc., are more obvious In addition to the shortcomings, there are also the following technical problems: [0003] 1. The analog weak voltage amplification uses a discrete op amp, which has a bulky structure, high power consumption, large offset voltage, and cumbersome adjustment of amplification factor; [0004] 2. Most of its analog-to-digital conversion parts use voltage-frequency converters (VFC), which have low performance stability and are susceptible to ambient temperature drift and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/02G01L25/00
Inventor 严康平李涛陈永培
Owner 704TH RES INST OF CHINA SHIPBUILDING IND CORP
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