Time domain power supply system of temperature sensor

A temperature sensor and power supply system technology, which is applied in the direction of electrical components, conversion equipment without intermediate conversion to AC, output power conversion device, etc., can solve the problems of unfavorable sensor field development, sensor internal circuit consumption, and low measurement accuracy. Achieve the effects of improving voltage quality, low quiescent current output, and reducing line loss

Active Publication Date: 2020-03-24
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The current power supply system of the temperature sensor easily causes the internal circuit of the sensor to consume large power consumption, and the internal line resistance will also bring measurement errors, which makes the measurement accur

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  • Time domain power supply system of temperature sensor
  • Time domain power supply system of temperature sensor
  • Time domain power supply system of temperature sensor

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the present invention without making creative efforts fall within the protection scope of the present invention.

[0024] refer to figure 1 , the present invention provides a time-domain power supply system for a temperature sensor with the following technical solution, including a power conversion circuit including: an auxiliary expansion circuit, a power compensation circuit, and a power voltage adjustment circuit;

[0025] The auxiliary expansion circuit is composed of RTD (resistive temperature sensor), switch tube, load resistor, lower limit correction resistor and gain resistor;

[0...

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Abstract

The invention discloses a time domain power supply system of a temperature sensor. The time domain power supply system comprises an auxiliary expansion circuit, a switching tube, a load resistor, a lower limit correction resistor and a gain resistor. The power supply compensation circuit is composed of a linear compensation resistor, an integral compensation network, a current converter, a voltageconverter, a linear amplifier and a current source. The power supply voltage adjusting circuit is composed of a primary unidirectional capacitor, a voltage stabilization adjuster and a secondary unidirectional capacitor. The reference voltage protection circuit comprises an adjusting resistor, a voltage stabilizing diode, an over-current protector and a power supply gain circuit. The power supplygain circuit is composed of a filter, a primary feedback circuit, a secondary feedback circuit and a current source loop, and a good power supply rejection ratio can be obtained. The phase of the power supply voltage of the power supply gain circuit is equal to the difference between the phase of the output end of the first-stage feedback circuit and the phase of the output end of the second-stage feedback circuit.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a time-domain power supply system for a temperature sensor. Background technique [0002] Sensors are widely used in military, aerospace, scientific research, industry, agriculture, medical, transportation and other fields and departments, and have very broad application prospects. With the introduction of the concept of sensor intelligence, people's requirements for sensors are getting higher and higher, especially the temperature sensor, which has the highest demand for sensors. High precision and intelligence are becoming the development direction of temperature sensors. The power supply of temperature sensors The work is very important. The invention patent with application number 201810484643.6 provides a self-powered temperature sensor, which connects the inner wall of the right side of the housing with the power supply device, and electrically connects the left side o...

Claims

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Application Information

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IPC IPC(8): H02M3/04H02M1/12H02M1/32
CPCH02M1/12H02M1/32H02M3/04
Inventor 尹爱辉于光远秦昌龙武晓文王浩王宝勇赵英杰李欣
Owner STATE GRID SHANDONG ELECTRIC POWER
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