Micro-power wireless digital transmitter

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...

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

Images