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CN-121977723-A - High-sensitivity detection circuit system of high-precision temperature sensor chip

CN121977723ACN 121977723 ACN121977723 ACN 121977723ACN-121977723-A

Abstract

The invention provides a high-sensitivity detection circuit system of a high-precision temperature sensor chip, which comprises a hardware operation layer, a circuit control layer and a data monitoring layer, wherein the hardware operation layer comprises a hardware installation module, an environment simulation module and a temperature source module, the circuit control layer comprises a signal acquisition circuit module, a signal amplification circuit module, an analog-to-digital conversion circuit module and a control circuit module, the data monitoring layer comprises a monitoring computer module, a data comparison module and a curve mapping module, the hardware installation module is internally provided with the temperature sensor chip to be detected and the comparison temperature sensor chip, and the high-sensitivity detection circuit system can be used for combining various different environment states through the cooperation of the hardware installation module, the environment simulation module and the temperature source module, detecting the sensitivity of the high-precision temperature sensor chip under various simulation conditions, and greatly improving the detection accuracy of the high-precision temperature sensor chip, so that the sensitivity performance of the high-precision temperature sensor chip to be tested can be better judged.

Inventors

  • Ren lianfeng

Assignees

  • 厦门海洋职业技术学院

Dates

Publication Date
20260505
Application Date
20240116

Claims (9)

  1. 1. The high-sensitivity detection circuit system of the high-precision temperature sensor chip is characterized by comprising a hardware operation layer, a circuit control layer and a data monitoring layer, wherein the hardware operation layer is connected with the circuit control layer, the hardware operation layer comprises a hardware installation module, an environment simulation module and a temperature source module, the temperature source module is positioned in the hardware installation module, the hardware installation module is connected with the environment simulation module, the circuit control layer is connected with the data monitoring layer, the circuit control layer comprises a signal acquisition circuit module, a signal amplification circuit module, an analog-to-digital conversion circuit module and a control circuit module, the signal acquisition circuit module is connected with the analog-to-digital conversion circuit module through the signal amplification circuit module, the analog-to-digital conversion circuit module is connected with the control circuit module, a communication circuit module is arranged on the control circuit module, the data monitoring layer comprises a monitoring computer module, a data comparison module and a curve mapping module, the monitoring computer module is communicated with the communication circuit module, the monitoring computer module is connected with the curve mapping module, and the temperature sensor chip to be detected are installed in the hardware installation module.
  2. 2. The high-sensitivity detection circuit system of the high-precision temperature sensor chip according to claim 1, wherein the hardware installation module comprises a placement table (1), a base (2) is arranged below the placement table (1), the upper side of the base (2) is connected with the placement table (1) through a spring (3), the spring (3) is uniformly provided with a plurality of groups, a vibrator (4) is arranged at the lower end of the placement table (1), a motor (5) is arranged above the base (2), a cam (6) is arranged at the output end of the motor (5), a connecting column (7) is hinged on the cam (6), and the connecting column (7) is hinged with the placement table (1).
  3. 3. The high-sensitivity detection circuit system for the high-precision temperature sensor chip according to claim 2, wherein the isolation shell (8) is arranged above the placement table (1), the shell cover (9) is arranged at the upper end of the isolation shell (8), the positioning opening (10) is arranged on the placement table (1) on the inner side of the isolation shell (8), the inner side of the positioning opening (10) is connected with the temperature source module, the annular fixing frame (11) is arranged above the positioning opening (10), the annular fixing frame (11) is connected with the placement table (1) through a bracket, the fixing rings (12) are arranged on the inner side of the annular fixing frame (11), a plurality of groups of fixing rings (12) are arranged, and the fixing rings (12) are used for fixing the temperature sensor chip.
  4. 4. A high sensitivity detection circuit system for a high accuracy temperature sensor chip according to claim 3, wherein a hot air inlet (13) and a cold air inlet (14) are installed on the outer side of the isolation case (8), and the hot air inlet (13) and the cold air inlet (14) correspond to an environment simulation module, and the environment simulation module comprises a cold and hot air blower.
  5. 5. The high-sensitivity detection circuit system of the high-precision temperature sensor chip of claim 1, wherein the control circuit module is a total control terminal of a hardware operation layer and a circuit control layer, and comprises a microcontroller and a digital logic circuit, and a moving average filtering algorithm is arranged in the control circuit module.
  6. 6. The high-sensitivity detection circuit system of the high-precision temperature sensor chip of claim 1, wherein the feedback path of the signal amplifying circuit is provided with an adjustable resistor array circuit module for adjusting the value of the feedback resistor of the amplifying circuit, thereby realizing the adjustment of the gain of the amplifying circuit.
  7. 7. The high-sensitivity detection circuit system of the high-precision temperature sensor chip of claim 1, wherein a timer circuit module is further arranged in the circuit control layer, the input end of the timer circuit module is electrically connected with the temperature sensor chip, and the output end of the timer circuit module is connected with the control circuit module.
  8. 8. The high sensitivity test circuit system of a high precision temperature sensor chip according to claim 1, wherein the curve generating module generates curve data, the curve data taking time and temperature as coordinate systems.
  9. 9. The high-sensitivity detection circuit system of the high-precision temperature sensor chip of claim 1, wherein the data monitoring layer further comprises a data storage module, and the data storage module is connected with the monitoring computer module.

Description

High-sensitivity detection circuit system of high-precision temperature sensor chip Technical Field The invention relates to the technical field of temperature sensor chip detection, in particular to a high-sensitivity detection circuit system of a high-precision temperature sensor chip. Background A temperature sensor refers to a sensor that senses temperature and converts it into a usable output signal. The temperature sensor is a core part of the temperature measuring instrument and has various varieties. The temperature sensor chip is divided into a thermal resistor and a thermocouple according to the characteristics of sensor materials and electronic elements, the sensitivity of the temperature sensor chip reflects the response degree of the temperature sensor chip to the change of the target temperature, and the corresponding high-sensitivity chip can detect tiny changes more accurately, so that the sensitivity of the high-precision temperature sensor chip meets or is higher than the standard, and the sensitivity of the high-precision temperature sensor chip needs to be detected in the research, development and production processes of the high-precision temperature sensor chip. In the traditional high-sensitivity detection circuit system, an acquisition circuit of a high-precision temperature sensor chip is usually connected with an external temperature source, different temperatures are generated through the temperature source to provide a test, and feedback information of the high-precision temperature sensor chip is acquired, so that the sensitivity of the high-precision temperature sensor chip can be detected, but due to the lack of various simulation environments, the condition that the detected sensitivity is inapplicable when encountering different use environments, and the sensitivity detection of the high-precision temperature sensor chip is inaccurate is caused, and therefore, the invention provides the high-sensitivity detection circuit system of the high-precision temperature sensor chip to solve the problems in the prior art. Disclosure of Invention In view of the above problems, an object of the present invention is to provide a high-sensitivity detection circuit system of a high-precision temperature sensor chip, which has the advantage of simulating different environmental conditions, and solves the problems existing in the prior art. The high-sensitivity detection circuit system of the high-precision temperature sensor chip comprises a hardware operation layer, a circuit control layer and a data monitoring layer, wherein the hardware operation layer is connected with the circuit control layer and comprises a hardware installation module, an environment simulation module and a temperature source module, the temperature source module is positioned in the hardware installation module and is connected with the environment simulation module, the circuit control layer is connected with the data monitoring layer and comprises a signal acquisition circuit module, a signal amplification circuit module, an analog-to-digital conversion circuit module and a control circuit module, the signal acquisition circuit module is connected with the analog-to-digital conversion circuit module through the signal amplification circuit module, the analog-to-digital conversion circuit module is connected with the control circuit module, a communication circuit module is arranged on the control circuit module, the data monitoring layer comprises a monitoring computer module, a data comparison module and a curve mapping module, the monitoring computer module is communicated with the communication circuit module and is connected with the curve mapping module, the curve mapping module is connected with the data comparison module, and the temperature sensor chip to be detected is installed in the hardware installation module. The hardware installation module is further improved in that the hardware installation module comprises a placement table, a base is arranged below the placement table, the upper side of the base is connected with the placement table through springs, the springs are uniformly provided with a plurality of groups, the lower end of the placement table is provided with a vibrator, the upper side of the base is provided with a motor, the output end of the motor is provided with a cam, a connecting column is hinged to the cam, and the connecting column is hinged to the placement table. The temperature sensor chip fixing device is characterized in that an isolation shell is arranged above the placing table, a shell cover is arranged at the upper end of the isolation shell, a positioning opening is arranged on the placing table on the inner side of the isolation shell, the inner side of the positioning opening is connected with a temperature source module, an annular fixing frame is arranged above the positioning opening and connected with the placing table through a support, a fixing ring is arranged