A PLC-based AC/DC power supply system and control method
A technology of AC and DC power supply and control method, which is applied in the direction of control/regulation system, adjustment of electrical variables, instruments, etc., which can solve the problems of large product size, high cost, and power failure of equipment, so as to save space, save cost, and reduce cost Effect
Active Publication Date: 2017-11-24
南京三一光电科技有限公司
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Problems solved by technology
[0002] In the prior art, when there are a lot of equipment, the power system needs to add a large number of relays for their use, and it is easy to cause the equipment to be powered off due to the failure of a single relay. The product is large in size and high in cost.
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[0015] Such as figure 1 As shown, an AC and DC power supply system based on PLC control includes PLC, signal acquisition unit, relay matrix and signal processing integrated PCB board, power input, n relay outputs, output wires, wiring harness and LCD touch screen, where n is A positive integer greater than 0; the signal acquisition unit is connected to the PLC, the PLC is connected to the wiring harness, the PLC is connected to the relay matrix and the signal processing integrated PCB board, the power input is connected to the relay matrix and the signal processing integrated PCB board, the relay matrix and the signal processing integrated PCB board The board is connected to n relay outputs, the wiring harness is connected to the LCD touch screen, and the wiring harness is connected to the output wire.
[0016] The signal acquisition unit collects analog signals, divides the analog signals in series with resistors, and reduces the high voltage value to a low voltage value betw...
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The invention discloses an alternating current-direct current power source system based on PLC control and a control method. The system comprises a PLC, a signal acquisition unit, a relay matrix and signal processing integrated PCB, a power input, n relay outputs, an output lead, a wiring harness and a liquid crystal touch screen. The method comprises the following steps that an operator sends a control instruction to the PLC through the liquid crystal touch screen, the PLC receives the instruction and then processes data, and a working instruction is sent to a butted device through the wiring harness; the device sends information to the PLC through the wiring harness, the PLC processes the information, then selects part of information needed by the operator and displays the information through the liquid crystal touch screen, and the rest part of information is processed by the PLC, and the device is controlled through on and off of the relays; relay matrixes A + B and a dynamic programming algorithm are adopted to calculate an optimal channel combination scheme. The space is saved, the cost is saved, more combinations are achieved, higher economic benefit can be obtained, and the cost for after-sales service is remarkably reduced.
Description
technical field [0001] The invention relates to the technical field of power supply control, in particular to an AC / DC power supply system and a control method based on PLC control. Background technique [0002] In the prior art, when there are too many devices, the power supply system needs to add a large number of relays for their use, and it is easy to cause power failure of the devices due to the failure of a single relay. The product is large in size and high in cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a PLC-based AC / DC power supply system and control method, which can realize the passage of larger currents, realize more combinations, and save space and cost. [0004] In order to solve the above technical problems, the present invention provides a PLC-based AC and DC power supply system, including PLC, signal acquisition unit, relay matrix and signal processing integrated PCB board, power input,...
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IPC IPC(8): G05F1/625
CPCG05F1/625
Inventor 张灿锋
Owner 南京三一光电科技有限公司