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Digital infrared temperature sensor

An infrared temperature and temperature sensor technology, which is applied in the direction of railway vehicle shape measuring devices, electric radiation detectors, and sensing the radiation of moving objects, can solve the problems of inability to achieve data integration, inflexible system design, and poor anti-interference performance of analog signals And other problems, to achieve the effect of flexible system design, improve reliability, and prevent signal distortion

Active Publication Date: 2017-11-07
HARBIN VEIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anti-interference performance of analog signals is poor, and the data integration of each channel cannot be realized when multiple sensors are applied, and the system design is not flexible

Method used

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  • Digital infrared temperature sensor
  • Digital infrared temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] combine figure 1 Description, a digital infrared temperature sensor, its composition includes: an infrared temperature sensitive element, an embedded processor, an element temperature sensor, a refrigeration circuit, a network module, the infrared temperature sensitive element transmits a signal to the signal amplification circuit in one direction, and the The signal amplification circuit unidirectionally transmits signals to the embedded processor, the element temperature sensor unidirectionally transmits signals to the element temperature conversion circuit, and the element temperature conversion circuit unidirectionally transmits signals to the embedded processor. processor, the embedded processor unidirectionally transmits signals to the zero calibration / protection gate circuit, the embedded processor unidirectionally transmits signals to the refrigeration circuit, and the refrigeration circuit unidirectionally transmits signals to the refrigeration element, so The ...

Embodiment 2

[0039] combine figure 2 To illustrate, in the digital infrared temperature sensor described in Embodiment 1, the element temperature conversion circuit receives the signal of the element temperature sensor to one end of the resistor R2, one end of the variable resistor RW1, one end of the resistor R3 and the capacitor C1. One end, the resistor R2 is connected in parallel with pin No. 1 of the chip U1, pin No. 2 of the chip U1 and one end of the resistor R1, and the other end of the resistor R1 is connected to the other end of the variable resistor RW1 At one end, the pin No. 6 of the chip U1 is connected in parallel with the other end of the resistor R3 and the other end of the capacitor C1;

[0040] Pin No. 3 of the chip U1 is connected in parallel with one end of the variable resistor RW2 and one end of the resistor R4, the other end of the variable resistor RW2 is connected to one end of the resistor R5, and the other end of the resistor R5 is connected to the The pin num...

Embodiment 3

[0047] combine Figure 4 Illustrate, the digitized infrared temperature sensor described in embodiment 1, described signal amplifying circuit undertakes the signal of described infrared temperature sensitive element to the inverting input terminal of U4 of operational amplifier and one end of resistance R21, described operational amplifier One end of the resistor R24 ​​and one end of the resistor R22 are connected in parallel to the positive phase input end of U4, the other end of the resistor R24 ​​is connected to one end of the resistor R25, the other end of the resistor R25 is grounded, and the other end of the resistor R22 The other end of the resistor R21 is connected in parallel with one end of the resistor R23, and the other end of the resistor R23 is grounded;

[0048] The output terminal of U4 of the operational amplifier is connected to one end of the resistor R26, and the other end of the resistor R26 is connected in parallel with one end of the resistor R28, one en...

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Abstract

The invention discloses a digital infrared temperature sensor. The invention relates to the digital infrared temperature sensor. An infrared temperature sensor, serving as a core of a railway vehicle shaft temperature detecting system, always adopts an analog signal to finish data transmission and command communication. The interference resistance of the analog signal is weak; when the analog signal is applied to multiple sensors, the data integration of all channels cannot be realized; and the system design is not flexible. An infrared temperature sensitive element transmits a signal to a signal amplification circuit in one way; the signal amplification circuit transmits the signal to an embedded processor in one way; an element temperature sensor transmits the signal to an element temperature conversion circuit in one way; the element temperature conversion circuit transmits the signal to the embedded processor in one way; the embedded processor transmits the signal to a zero calibration / protection door circuit in one way; the embedded processor transmits the signal to a refrigeration circuit in one way; the refrigeration circuit transmits the signal to a refrigeration element in one way; and the embedded processor transmits the signal to a network module in one way. The invention is applied to the infrared temperature sensor.

Description

technical field [0001] The invention relates to a digitized infrared temperature sensor, in particular to a railway vehicle axle temperature detection system. Background technique [0002] As an important part of the vehicle operation safety monitoring system (5T), the railway vehicle axle temperature intelligent detection system (THDS) uses the trackside high-speed infrared temperature sensor and intelligent tracking device to detect the bearing temperature of the running vehicle in real time, and carries out tracking and alarm, which can detect in time The hot shaft of the vehicle, so as to prevent the hot shaft, is an important driving equipment to ensure the safety of railway transportation. [0003] As the core of the railway vehicle axle temperature detection system, the infrared temperature sensor has always used analog signals to complete data transmission and command communication. The anti-interference performance of analog signals is poor, and the data integratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61K9/06G01J5/10
CPCB61K9/06G01J5/10G01J2005/0033
Inventor 何晓强张瑜峰程明王可珂周振林张丽娟刘钦明刘婷婷
Owner HARBIN VEIC TECH
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