Giant LED (Light Emitting Diode) display thermometer
A thermometer, a giant technology, applied in the field of giant LED display thermometers, can solve the problems of poor anti-interference, high failure rate, complex structure, etc., to achieve the effect of low cost, low failure rate and strong anti-interference
Inactive Publication Date: 2012-06-27
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology
The outdoor temperature conditions have a certain warning effect on people outdoors, and now there are also LED display analog thermometers, which use a computer, control card, and driver board. The computer is used to collect the temperature, and then the control card processes it. Serial synchronous signals are transmitted to the driver board, including SCP, STNB, DATE and other signals, but the anti-interference performance of this long-distance transmission is extremely poor; the driver board is driven by a large number of logic ICs, and each LED point is controlled separately, with a complex structure. High failure rate and high cost
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[0012] Such as figure 1 As shown, the giant LED display thermometer made up of high-brightness lamp tubes of the present invention includes a first acquisition control unit made of a temperature sensor, a brightness sensor and a first central processing unit MCU1, a temperature sensor, a brightness sensor and a second central processing unit MCU2 The second acquisition control unit composed of units, the switching control unit composed of the third central processing unit MCU3, the first electronic switch K1 and the second electronic switch K2, the drive control unit, and the LED high-brightness lamp tube. Among them, the temperature sensor adopts a digital temperature sensor with internal compensation function, which can measure temperature stably and accurately; the display accuracy is 0.2°C, and the display range is -10°C to 45°C.
[0013] The third central processing unit MCU3 controls the first electronic switch and the second electronic switch through the switch drive ci...
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The invention discloses a giant LED (Light Emitting Diode) display thermometer, which comprises a first collection control unit consisting of a temperature sensor and a first central processing unit, at least one driving control unit, and at least one group of LED high-brightness lamp tube, wherein each driving control unit is composed of a central processing unit and an LED high-brightness lamp tube driving circuit, and the signal output end of the LED high-brightness lamp tube driving circuit is connected with one group of LED high-brightness lamp tube; the signal output end of the temperature sensor is connected with the signal input end of the first central processing unit, and the communication end of the first central processing unit is connected with the communication end of the central processing unit of each driving control unit through a MODBUS; and the height of a light emitting part of the at least one group of LED high-brightness lamp tube corresponds to a corresponding temperature value. According to the invention, serial asynchronous communication is adopted for signal transmission, a MODBUS field bus structure is used, the advantages of strong anti-jamming performance, low fault rate and simple structure are achieved, and the giant LED display thermometer can be used for prompting people on temperature changes and has an energy-saving decoration effect.
Description
technical field [0001] The invention relates to an LED display thermometer used for decoration and beautification of large outdoor building structures, in particular to a giant LED display thermometer composed of high-brightness lamp tubes. Background technique [0002] At present, many outdoor large-scale building structures are equipped with LED display devices for decoration or beautification. The outdoor temperature conditions have a certain warning effect on people outdoors, and now there are also LED display analog thermometers, which use a computer, control card, and driver board. The computer is used to collect the temperature, and then the control card processes it. Serial synchronous signals are transmitted to the driver board, including SCP, STNB, DATE and other signals, but the anti-interference performance of this long-distance transmission is extremely poor; the driver board is driven by a large number of logic ICs, and each LED point is controlled separately, ...
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IPC IPC(8): G01K1/02
Inventor 李耀邱道尹樊要玲王伟李士克金博剧森
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER