Acquisition system applied to aircraft platinum resistor temperature sensor
A temperature sensor and acquisition system technology, applied in the field of aviation electrical, can solve the problems of complex peripheral circuits and low accuracy
Active Publication Date: 2020-04-10
TIANJIN JINHANG COMP TECH RES INST
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[0003] The purpose of the present invention is to provide an acquisition system applied to aircraft platinum resistance temperature sensors, which is used to solve the problems of complex peripheral circuits and low accuracy in the prior art
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[0012] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0013] figure 1 Shown is that the present invention provides an acquisition system applied to an aircraft platinum resistance temperature sensor, including: a Wheatstone bridge, a platinum resistance temperature sensor, a resistor, an operational amplifier, an A / D converter, and a DSP. The platinum resistance temperature sensor is connected to the Wheatstone bridge, the voltage difference is amplified by the operational amplifier, and then converted by AD, the temperature value of the same point is continuously collected 9 times, and the AD conversion value is sorted from small to large by using the bubbling method in the DSP. Take the middle value, query the temperature table, and get the corresponding temperature val...
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The invention relates to an acquisition system applied to an aircraft platinum resistor temperature sensor. The acquisition system comprises a Wheatstone bridge, a temperature sensor, a resistor, an operational amplifier, an A / D converter and a DSP. A temperature sensor is connected to a Wheatstone bridge, the voltage difference of the Wheatstone bridge is amplified by an operational amplifier, then AD conversion and temperature value acquisition are carried out, AD conversion values are ranked from small to large in a DSP by using a bubbling method, an intermediate value is taken, a thermometer is inquired, and a corresponding temperature value is obtained. The invention provides an acquisition system applied to an aircraft platinum resistor temperature sensor, which improves the acquisition precision of the temperature sensor and is not influenced by peripheral circuits and platinum resistor temperature. The acquisition algorithm of the aircraft platinum resistor temperature sensor provided by the technical scheme of the invention has the advantages of strong practicability, good acquisition effect and strong anti-interference capability.
Description
technical field [0001] The invention relates to an acquisition algorithm applied to an aircraft platinum resistance temperature sensor, which belongs to the field of aviation electrical technology. Background technique [0002] Temperature is an important parameter on the aircraft, and the measurement of temperature is very important. The traditional temperature measurement system is expensive, the peripheral circuit is complex, and the accuracy is low. Contents of the invention [0003] The object of the present invention is to provide an acquisition system applied to an aircraft platinum resistance temperature sensor, which is used to solve the problems of complex peripheral circuits and low accuracy in the prior art. [0004] The present invention is an acquisition system applied to an aircraft platinum resistance temperature sensor, which includes: a Wheatstone bridge, a temperature sensor, a resistor, an operational amplifier, an A / D converter, and a DSP, and the temp...
Claims
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Login to View More IPC IPC(8): G01K7/20
CPCG01K7/20G01K2219/00
Inventor 刘强王清泉仝步升
Owner TIANJIN JINHANG COMP TECH RES INST