Portable blackbody calibrator

A calibrator, portable technology, applied in the field of portable blackbody calibrator, can solve the problems affecting the safety of vehicle operation, changes in precision and accuracy, and large volume of calibrator, so as to improve temperature stability and accuracy, reduce quantity, The effect of improving work efficiency

Active Publication Date: 2016-11-23
HARBIN VEIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Limited by the current level of electronic manufacturing technology, electronic components will inevitably cause slight individual differences after the finished product is off-line and leave the factory. The precision and accuracy will undergo unpredictable changes. The infrared temperature sensor element used in the train infrared axle temperature detection device is also a sensitive device. Changes in its characteristics will affect the safety of the vehicle. In order to correct this change and meet the specified requirements Accuracy and accuracy, use the calibration instrument to calibrate the sensor calibration within the specified time. The original calibration instrument is huge and powered by 220VAC. It is very inconvenient to work together indoors and outdoors

Method used

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  • Portable blackbody calibrator
  • Portable blackbody calibrator
  • Portable blackbody calibrator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A portable blackbody calibration instrument, which consists of: control keys KEYS, display screen LCD, the control keys KEYS transmits information to the control board Ctrl through the four-way general input and output interface GPIO / 4, and the control board Ctrl includes MCU system circuit, temperature acquisition circuit TCC, heating drive circuit HDV, WIFI module and charging and discharging circuit CHR, the MCU system circuit and WIFI module transmit signals bidirectionally through the asynchronous serial communication bus UART2, and the MCU system circuit transmits signals The heating drive circuit HDV is transmitted to the heating drive circuit HDV through a general-purpose input and output interface GPIO / 1, and the heating drive circuit HDV transmits the output PWM signal to the heating and temperature control device HEATER, and the heating and temperature control device HEATER transmits the signal to The temperature acquisition circuit TCC and the black body BLB,...

Embodiment 2

[0026] The portable black body calibration instrument described in embodiment 1, described MCU system circuit comprises ARM embedded processor, No. 1 pin of described ARM embedded processor IC3 is connected in parallel with one end of diode D3 and one end of diode D4, so The other end of the diode D4 is connected in parallel with the input voltage voltage reference chip V3.3, one end of the resistor R43, one end of the capacitor C23 and pin 64 of the ARM embedded processor IC3, and the other end of the capacitor C23 is connected in parallel with the ARM embedded The No. 63 pin of the type processor IC3 is grounded;

[0027] The other end of the diode D3 is connected in series with the DC battery DC, and then one end of the capacitor C27, one end of the capacitor C26, one end of the capacitor C24, one end of the capacitor C28 and one end of the capacitor C25 are connected in parallel, and the other end of the capacitor C24 is connected in parallel with a resistor R43 The other ...

Embodiment 3

[0035] In the portable blackbody calibration instrument described in Embodiment 1, the temperature acquisition circuit TCC includes a blackbody temperature sensor CN3, the No. 3 pin of the blackbody temperature sensor CN3 is grounded, and the No. 1 pin of the blackbody temperature sensor CN3 is grounded. One end of the resistor R15, one end of the resistor R19 and one end of the capacitor C14 are connected in parallel, and the other end of the resistor R15 is connected in parallel with one end of the resistor R16, one end of the resistor R13, one end of the resistor R12 and the K pin of the voltage reference chip V3, so The other end of the resistor R13 is connected in parallel with one end of the resistor R14 and the R pin of the voltage reference chip V3, the other end of the resistor R14 is connected to the A pin of the voltage reference chip V3 and the ground terminal, and the other end of the resistor R12 is Connect one end to the voltage terminal +5V;

[0036] The No. 2 ...

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PUM

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Abstract

The invention relates to a portable blackbody calibrator. Control keys transfer information through a quad universal input / output interface to a control board, and the control board comprises a system circuit, a temperature acquisition circuit, a heating driving circuit module and a charging and discharging circuit; the system circuit and the module transfer signals bidirectionally through an asynchronous serial communication bus, and the system circuit transfers signals to the heating driving circuit through a single universal input / output interface; the heating driving circuit transfers output signals to a heating and temperature control device, and the heating and temperature control device transfers the signals to the temperature acquisition circuit and a blackbody respectively; the temperature acquisition circuit transfers the signals to the system circuit, and the system circuit transfers the signals to a display screen through the asynchronous serial communication bus; the charging and discharging circuit receives voltage signals of a lithium polymer battery. The invention is applied to a blackbody calibrator.

Description

technical field [0001] The invention relates to a portable black body calibration instrument. Background technique [0002] Limited by the current level of electronic manufacturing technology, electronic components will inevitably cause slight individual differences after the finished product is off-line and leave the factory. The precision and accuracy will undergo unpredictable changes. The infrared temperature sensor element used in the train infrared axle temperature detection device is also a sensitive device. Changes in its characteristics will affect the safety of the vehicle. In order to correct this change and meet the specified requirements Accuracy and accuracy, use the calibration instrument to calibrate the sensor calibration within the specified time. The original calibration instrument is huge and powered by 220VAC. It is very inconvenient to work together indoors and outdoors. Contents of the invention [0003] The purpose of the present invention is to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01J5/52
CPCG01J5/00G01J5/80G01J5/53
Inventor 何晓强张瑜峰宫延凌程明刘永超刘钦明李清峰李轶博
Owner HARBIN VEIC TECH
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