An emergency power supply display circuit
An emergency power supply and display screen technology, applied in the field of circuits, can solve the problems of high cost, inability to communicate with the outside world, and the emergency power supply display screen occupies a large space, and achieves the effect of reducing the volume, increasing the communication chip, and having a simple structure.
Active Publication Date: 2018-07-06
CHONGQING SANSAN ELECTRIC APPLIANCE
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Problems solved by technology
[0004] The emergency power display screen circuit provided by the present invention solves the problems that the emergency power display screen occupies a large space, has high cost and cannot communicate with the outside world
Method used
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[0016] An emergency power supply display circuit includes a control chip 1, a communication chip 2, a display module 3, an address latch chip 4, a bus transceiver module 5, and a clock circuit 6;
[0017] Among them, the control chip 1 adopts the chip STC15W4K32S4 single-chip microcomputer, the communication chip 2 adopts the chip SN75176 to increase communication with the outside world, the display module 3 adopts LCD1602 character liquid crystal, the address latch chip 4 adopts the chip 74AC373, and the bus transceiver module 5 The chip 74AC245 is adopted, and the resistors and capacitors are chip-type, which reduces the volume occupied by the components, thereby greatly reducing the volume of the entire device.
[0018] The P3.0 and P3.1 ports of the control chip 1 are connected to the communication chip 2, the P0 port of the control chip 1 is connected to the display module 3, and the P3.5 of the control chip 1 is connected to the address latch chip 4, of which the address latch...
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The invention discloses an emergency power supply display screen circuit, which comprises a control chip, a communication chip, a display module, an address latch chip, a bus transceiving module and a clock circuit, wherein the control chip adopts a surface mount type STC15W4K32S4 single chip microcomputer; the communication chip adopts a surface mount type SN75176, and increase communication with the outside; the display module adopts an LCD 1602 character liquid crystal; the address latch chip adopts a surface mount type 74AC373; the bus transceiving module adopts a surface mount type 74AC245; a resistor and a capacitor adopt the surface mount type; and the communication chip is used for processing data transmitted by the control chip and transmitting the data to the outside. The emergency power supply display screen circuit adopts the method of welding elements in the display screen circuit in a surface mount manner, is additionally provided with the communication chip, and has the advantages of being simple in structure, reducing size, decreasing cost of an emergency power supply display screen, and increasing the function of communicating with the outside.
Description
Technical field [0001] The invention belongs to the technical field of circuits, and relates to a circuit of a display screen, in particular to an emergency power supply display circuit. Background technique [0002] With the continuous updating of electronic products, traditional electronic products have been unable to meet the actual needs of users due to their large size or high power consumption. At present, more and more electronic products are oriented towards miniaturization and more functions. Due to development, the requirements for the volume, installation method, and functions of the electronic components inside the product are becoming more and more demanding. [0003] The emergency power supply display screen can intuitively display data information such as mains voltage, emergency voltage, battery voltage and output current for observers, so that personnel can clearly understand the working conditions of the emergency power supply. If a problem occurs, it can be check...
Claims
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IPC IPC(8): G09G5/00
CPCG09G5/003
Inventor 李多山谷瑞
Owner CHONGQING SANSAN ELECTRIC APPLIANCE