Matrix multi-path temperature detection circuit for small satellite platform
A temperature detection circuit and satellite platform technology, applied in the field of aerospace electronics, can solve the problems of complicated equipment wiring, shortening service life, affecting measurement results, etc., and achieve the effects of improving measurement accuracy, service life and reliability.
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[0032] Hereinafter, a matrix thermistor measurement network with 6 monitoring points is taken as an example to further illustrate the temperature detection circuit of the present invention. The 6 temperature monitoring points in the system are decomposed into a 2x3 dimensional matrix, but in order to ensure redundant measurement, the matrix is designed as a square 3x3 dimensional matrix, such as Image 6 Shown. When the row and column selection signal strobes and controls the transistors m1 and n1, the output of out1 corresponds to the voltage value of the (1, 1) monitoring point in the first row and first column. When the row and column selection signal strobes and controls the transistors m3, n1, the output of out1 corresponds to the voltage value of the monitoring point in the third row and the first column (3, 1), which is the voltage of the transistor Vce. The row and column control signal comes from the address signal of the microcontroller. The one-ch...
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