MULTI-CHANNEL TEMPERATURE CONTROL DEVICE Russian patent published in 2017 - IPC G01K7/16 

FIELD: measuring equipment.

SUBSTANCE: multichannel temperature control device is claimed. It comprises of a power supply unit, a converter of resistance in the pulse duration, a switching unit, a signal conditioner, an information display unit. In this case, the converter contains a key, which input is connected to the power source, the control input is connected to the timer discharge input, and the output to its information input and the sensor inputs, and through the calibrating capacitor to the common bus. The timer reference voltage input is connected to the power supply output, and the timer output, which is the output of the converter, is connected to the first input of the conditioner, the second input of which is connected to the output of the clock generator, which is the output of the switch. The switching unit contains a multiplexer which information inputs are connected to the outputs of the respective sensors and the output to the common bus, and the control input to the counter output and through the decoder to the channel code indicator. The counter input is connected to the clock generator output and the count is performed cyclically with the unit of the count, equal to the number of channels. The first input of the conditioner is connected to the synchronization inputs of the first and third triggers and through an inverter to the synchronization input of the second trigger. The second input of the conditioner is connected to the first inputs of the first and second "AND" elements, which outputs are connected to the information inputs of the third and first triggers respectively, and the second inputs, respectively, to the normal and inverted outputs of the second trigger. The information input of the second trigger is connected to the output of the "OR" element, which inputs are connected to the normal outputs of the first and third triggers. The inputs of the third "AND" element are connected to the normal outputs of the first and second triggers, and the output is the first output of the conditioner and is connected to the first input of the display unit being the first input of the fifth "AND" element which second input is connected to the output of the reference frequency generator, and the output to the input of the calibrator containing series-connected counters - scaling and binary-coded. The output of the calibrator is connected to the series-connected decoder and indicator. The inputs of counter resetting of the calibrator are connected to the second input of the display unit and the second output of the conditioner, which is the output of the fourth "AND" element, the inputs of which are connected to the normal output of the first trigger and an inverted output of the second trigger.

EFFECT: increasing the accuracy of measurements, expanding the functionality of the device.

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