Anti-misplug protection circuit and method and electronic equipment
A technology to protect the circuit and prevent mis-insertion. It is applied in the direction of preventing wrong connection of the device, digital output to the printing unit, etc. It can solve problems such as affecting the service life of the cash register equipment, damage to the electronic parts of the printer board, and electrochemical corrosion of the power pins. , to avoid the impact of mis-insertion on the machine, improve production yield, and save maintenance costs
Pending Publication Date: 2022-04-05
SHANGHAI SUMI TECH CO LTD +1
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Problems solved by technology
[0003] However, in the existing cash register equipment, if there is reverse insertion between the printer board and the control board, when the insertion is biased or mistouched, the power supply of the main board will be input to the printer board, causing damage to the electronic parts of the printer board and electrochemical corrosion of the power pins , which greatly affects the service life of the cash register equipment
[0004] In order to solve the technical problem that there is reverse insertion between the printer board and the control board, wrong insertion or wrong touch, the machine will be damaged due to misoperation, and the service life of the cash register equipment will be affected. At present, an anti-mis-insertion protection circuit is needed to prevent the printer board and Control the impact of reverse insertion between main boards, mis-insertion or mis-touch on the machine, improve production yield, save maintenance costs, and prolong the working life of the machine
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[0053] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0054] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of characteristics, wholes, steps, operations, elements, components and / or collections.
[0055] In order ...
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The invention discloses an anti-misplug protection circuit and method and electronic equipment, and the circuit comprises a voltage dividing assembly which is connected between a working main board end and a control main board end, the working main board end and the control main board end are correspondingly connected through a plurality of pins, and the voltage dividing assembly is used for dividing the working main board end and the control main board end when the pins between the working main board end and the control main board end are normally connected; inputting a first level signal to a first working signal pin of the control main board end when the pin between the working main board end and the control main board end is abnormally connected, and inputting a second level signal to the first working signal pin when the pin between the working main board end and the control main board end is abnormally connected; when the control main board end receives a first level signal through the first working signal pin, the power supply output end of the control main board is conducted; and when the control mainboard end receives the second level signal through the first working signal pin, the power supply output end is cut off. According to the invention, the influence of reverse insertion, offset insertion or mistaken touch between the printer board and the control mainboard on a machine can be avoided.
Description
technical field [0001] The invention relates to the technical field of intelligent sales terminals, in particular to an anti-mis-insertion protection circuit, method and electronic equipment applied to intelligent sales terminals. Background technique [0002] At present, in the field of smart sales terminals, a desktop cash register with a built-in detachable printer is usually used as a cash register device. The printer board and the control board are installed in different areas inside the cash register device. The printer board and the main board are connected by electronic wires and controlled by the control board. The printer board realizes the printing of small receipts of cash register equipment. [0003] However, in the existing cash register equipment, if there is reverse insertion between the printer board and the control board, when the insertion is biased or mistouched, the power supply of the main board will be input to the printer board, causing damage to the ...
Claims
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Login to View More IPC IPC(8): G06F3/12H01R13/64
Inventor 朱玉祥林喆王晓光杨保利
Owner SHANGHAI SUMI TECH CO LTD