Multi-sensor control circuit and control method thereof

Abstract

The invention discloses a multi-sensor control circuit and a control method thereof. The multi-sensor control circuit comprises a main control unit, a sensor unit and an interface unit, wherein the sensor unit comprises a plurality of sensors arranged in a plurality of rows and a plurality of columns; the interface unit comprises a signal transmission end, a plurality of power supply positive output ends and a plurality of power supply negative output ends; each power supply positive output end is connected with a DC power supply through a switch access of a corresponding first switching circuit; each power supply negative output end is grounded through switch access of a corresponding second switching circuit; each power supply positive output end is connected with a power supply positive input end of the corresponding row / column of sensors; and each power supply negative output end is connected with a power supply negative input end of the corresponding row / column of sensors. According to the multi-sensor control circuit and the control method thereof, since only one sensor is powered on for operation at one moment, the power supply pressure is small, and the abnormal operation of the sensor and the entire control circuit caused by insufficient power supply is avoided.

Description

technical field [0001] The invention belongs to the technical field of sensor circuits, and in particular relates to a multi-sensor control circuit and a control method for the circuit. Background technique [0002] A sensor is a detection device with a wide range of applications. [0003] In a system circuit, it is often necessary to apply multiple sensors. When there are many sensors that need to be connected to the host, communication is usually used to connect the host with multiple sensors using a master-slave structure, see figure 1 shown. [0004] The disadvantage of this connection method is that when the number of sensors is large, the power supply requirements become very high. If the power supply is insufficient, it will cause problems in the operation of the sensors, which in turn will affect the normal operation of the entire circuit. Contents of the invention [0005] The present invention provides a multi-sensor control circuit, which solves the above-men...

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Problems solved by technology

[0004] The disadvantage of this connection method is that when the number of sensors is large, the power supply requirements become very high. If the power supply is insufficient, it will cause problems in the operation of the sensors, which in turn will affect the normal operation of the entire circuit.

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