A two-wire and four-wire DC motor compatible wiring circuit

Abstract

The invention relates to a two-wire and four-wire DC motor compatible wiring circuit, which includes a wiring unit, the wiring unit includes a compatible module and a protection module; the compatible module includes a four-PIN terminal block and an auxiliary resistor R, and the four-PIN terminal block is Four wiring holes are provided, and the four wiring holes are respectively one PIN, two PINs, three PINs, and four PINs; the protection module includes a diode D1, a diode D2, and a diode D3; and a detection module, including a signal detection module 1, Signal detection module 2, sampling resistor R1 and sampling resistor R2. The above two-wire and four-wire DC motor compatible wiring circuit balances the signal loops in the four-wire DC motor and the two-wire DC motor through the auxiliary resistor R, sampling resistor R1 and sampling resistor R2, so that the signals transmitted to the controller The signal waveforms are equal or similar, so that the controller only needs to take a judgment value when judging, and the compatible circuit can be realized.

Description

technical field [0001] The invention relates to the technical field of vending machines, in particular to a two-wire and four-wire DC motor compatible wiring circuit. Background technique [0002] The spring vending machine in the vending machine is a kind of automatic vending equipment widely used in industry and life. It drives the motor to drive the spring installed on the motor to rotate, and then pushes the goods placed in the spring pattern to produce longitudinal displacement. , to achieve sales of equipment shipments. The number of goods sold depends on the number of turns of the driving motor. Driving the motor to rotate and accurately detecting the position and number of turns of the motor is the key to the technology. In the existing scheme of connecting springs to count, once the design of the control board is determined Therefore, only one of the two-wire or four-wire DC motors can be selected, because their signal acquisition circuits are different. This brin...

AI Technical Summary

Problems solved by technology

[0007] Because of the problem of the signal loop, the two-wire system and the four-wire system have different signal processing mechanisms. Among the existing technologies, the disadvantages are: the current wiring circuit cooperates with the signal processing control board, and can only process one signal type. , either the signal of the two-wire motor or the signal of the four-wire motor, but cannot handle these two signal mechanisms in a compatible manner

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