A three-way output control board

Abstract

The present invention relates to the field of traffic light control, and in particular to a three-way output control board, comprising an AC optocoupler, a three-color light board and a voltage-stabilized power supply, wherein the three-color light board comprises a red light board, a yellow light board and a green light board, three AC optocoupler control ends are respectively connected to the red light board, the yellow light board and the green light board, three AC optocoupler input ends are respectively connected to an external signal machine, the red light board, the yellow light board and the green light board are connected in parallel to each other and connected to the output end of the voltage-stabilized power supply, the AC optocoupler is used to control the conduction of the light board individually, and one voltage-stabilized power supply is used to power three groups of lights, thereby reducing the number of voltage-stabilized power supplies and reducing production costs.

Description

Technical Field

[0001] The invention relates to the field of traffic light control, in particular to a three-way output control board. Background Art

[0002] The existing traffic light signal control board is provided with a voltage-stabilized power supply on each light, and then controls the on and off of the traffic lights connected thereto by controlling the conduction and off of the three internal switches. For example, when the red light switch is turned on, the mains electricity enters the voltage-stabilized power supply of the red traffic light after passing through the red light switch, and then powers on the red light. Similarly, the yellow light switch and the green light switch respectively control the connection between the mains electricity and the voltage-stabilized power supply. This control method requires that each light be provided with an AC-to-DC voltage-stabilized power supply for powering the signal light. This traffic light is large in size and has a high production cost. Therefore, an output control board that can reduce the production cost is needed. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a three-way output control board, which can reduce the number of voltage-stabilized power supplies and reduce production costs.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a three-way output control board, comprising an AC optocoupler, a three-color light board and a voltage-stabilized power supply, the three-color light board includes a red light board, a yellow light board and a green light board, the three AC optocoupler control ends are respectively connected to the red light board, the yellow light board and the green light board, the input ends of the three AC optocouplers are respectively connected to an external signal machine, the red light board, the yellow light board and the green light board are connected in parallel to each other and connected to the output end of the voltage-stabilized power supply.

[0005] The red light board, the yellow light board and the green light board are respectively controlled to be on and off by their respective AC optocouplers, and the three groups of signal lights are connected in parallel to the regulated power supply, so as to reduce the number of regulated power supplies used and reduce production costs.

[0006] Furthermore, the red light board, yellow light board and green light board are respectively provided with a signal light, an NMOS tube and a peripheral circuit, the signal light is connected to the D pole of the NMOS tube and the peripheral circuit, the S pole of the NMOS tube is connected to the regulated power supply and the peripheral circuit, and the G pole of the NMOS tube is connected to the peripheral circuit.

[0007] Furthermore, the signal lights include a red signal light, a yellow signal light and a green signal light.

[0008] Furthermore, the voltage-stabilized power supply is an AC-to-DC voltage-stabilized power supply, and an input end of the voltage-stabilized power supply is connected to a high-voltage AC mains.

[0009] The beneficial effect of the present invention is that three groups of signal lights are connected in parallel and connected to the output end of the voltage-stabilized power supply, so that one voltage-stabilized power supply can supply power to the three groups of signal lights, thereby reducing the number of voltage-stabilized power supplies and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the present invention.

[0011] Explanation of the figure numbers: 1-AC optocoupler; 2-regulated power supply; 3-signal light; 4-NMOS tube. DETAILED DESCRIPTION

[0012] See also Figure 1 As shown, the present invention relates to a three-way output control board, comprising an AC optocoupler, a three-color light board and a voltage-stabilized power supply, the three-color light board comprising a red light board, a yellow light board and a green light board, the three AC optocoupler control ends are respectively connected to the red light board, the yellow light board and the green light board, the three AC optocoupler input ends are respectively connected to an external signal machine, the red light board, the yellow light board and the green light board are connected in parallel to each other and connected to the output end of the voltage-stabilized power supply.

[0013] The red light board, the yellow light board and the green light board are respectively controlled to be on and off by their respective AC optocouplers, and three groups of signal light boards are connected in parallel to the regulated power supply, so as to reduce the number of regulated power supplies used and reduce production costs.

[0014] The AC optocoupler adopts TLP620GB optocoupler, which is triggered by AC power. When receiving a signal, the AC optocoupler is turned on.

[0015] Furthermore, the red light board, yellow light board and green light board are respectively provided with a signal light, an NMOS tube and a peripheral circuit, the signal light is connected to the D pole of the NMOS tube and the peripheral circuit, the S pole of the NMOS tube is connected to the regulated power supply and the peripheral circuit, and the G pole of the NMOS tube is connected to the peripheral circuit.

[0016] The model of the NMOS tube is NCE3018AS, and the signal light is turned on and off by the NMOS tube.

[0017] Furthermore, the signal lights include a red signal light, a yellow signal light and a green signal light.

[0018] Furthermore, the voltage-stabilized power supply is an AC-to-DC voltage-stabilized power supply, and an input end of the voltage-stabilized power supply is connected to a high-voltage AC mains.

[0019] The working principle of the present invention is:

[0020] When the external signal machine does not output a light-on signal, the AC optocoupler is disconnected, at which time the G pole of the NMOS tube is at a low level, the S pole and the D pole are cut off, no current flows through the signal light, and the signal light does not light up.

[0021] When the external signal machine outputs a light-on signal, the AC optocoupler is triggered to turn on. At this time, the G pole of the NMOS tube is at a high level, the S pole and the D pole are turned on, and current flows through the signal light, and the signal light turns on.

[0022] When the external signal machine outputs a certain light-on signal, the corresponding NMOS tube is turned on and the corresponding signal light is turned on.

[0023] The beneficial effect of the present invention is that three groups of signal lights are connected in parallel and connected to the output end of the voltage-stabilized power supply, so that one voltage-stabilized power supply can supply power to the three groups of signal lights, thereby reducing the number of voltage-stabilized power supplies and reducing production costs.

[0024] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A three-way output control board, characterized in that: It comprises an AC optocoupler, a three-color light board and a voltage-stabilized power supply, wherein the three-color light board comprises a red light board, a yellow light board and a green light board, the three AC optocoupler control ends are respectively connected to the red light board, the yellow light board and the green light board, the input ends of the three AC optocouplers are respectively connected to an external signal machine, the red light board, the yellow light board and the green light board are connected in parallel to each other and connected to the output end of the voltage-stabilized power supply; The red light board, the yellow light board and the green light board are all provided with a signal light, an NMOS tube and a peripheral circuit, the signal light is connected to the D pole of the NMOS tube and the peripheral circuit, the S pole of the NMOS tube is connected to the regulated power supply and the peripheral circuit, and the G pole of the NMOS tube is connected to the peripheral circuit; The voltage-stabilized power supply is an AC-to-DC voltage-stabilized power supply, and the input end of the voltage-stabilized power supply is connected to a high-voltage AC mains power supply; When the external signal machine does not output a light-on signal, the AC optocoupler is disconnected, at which time the G pole of the NMOS tube is at a low level, the S pole and the D pole are cut off, and no current flows through the signal light, so the signal light does not light up; When the external signal machine outputs a light-on signal, the AC optocoupler is triggered to turn on, at which time the G pole of the NMOS tube is at a high level, the S pole and the D pole are turned on, and current flows through the signal light, and the signal light turns on; When the external signal machine outputs a certain light-on signal, the corresponding NMOS tube is turned on and the corresponding signal light is turned on.

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