Double-wire power supply remote control device, control method and electrical equipment

Abstract

The invention provides a double-wire power supply remote control device and method and electrical equipment, and the device comprises a power supply unit and a load unit which are connected through double cables. The power supply unit comprises a power supply module, a first switch module and a current sensing module; the first switch module controls voltage output and transmits an output voltage waveform to the load unit. The current sensing module senses a current waveform fed back by the load unit; the load unit comprises a load, a second switch module, a current-limiting resistor and a voltage induction module; the second switch module and the current-limiting resistor adjust the magnitude of the load current fed back to the power supply unit together. The voltage sensing module senses a voltage waveform input by the power supply unit, and the second switch module is used for generating a current waveform. Based on the device, the invention further provides a double-wire power supply remote control method and electrical equipment. According to the invention, the number of cables required for direct current power transmission is reduced, the system reliability is improved, and the design complexity is simplified.

Description

technical field [0001] The invention belongs to the technical field of electrical equipment power supply, and particularly relates to a two-wire power supply remote control device, a control method and an electrical equipment. Background technique [0002] In the field of electrical appliances, there is an inevitable need to switch on and off the power supply. The means to achieve this function can be roughly divided into two types: physical mechanical switches, electromagnetic or electronic automatic control switches, physical mechanical switches are generally manually operated, electromagnetic or electronic automatic control. The switch is used to cooperate with the circuit signal to realize automatic control. Additional signal transmission lines are required due to control requirements, resulting in additional line costs and connector pin counts. [0003] like figure 1 A schematic diagram of the control structure of the power circuit switch circuit commonly used in the ...

AI Technical Summary

Problems solved by technology

Due to the need for additional signal cables or wire connectors, in longer distance applications, the cost of wires is increased, and the cost of connectors is higher than the cost of wires, and due to system design, it is generally desired Under the same function, the simpler the system complexity, the better, and the fewer the number of connectors, the better. However, it is necessary to integrate the pins of high power current and signal pins of low current into one connector. Generally, there are few public versions on the market. , the specifications may not be available, and most of them need to be customized, and there are too many pins in the connector. In a more complicated working environment such as high humidity, water, sandy and dusty environments, the risk of system failure and error checking will be increased. Maintenance costs

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