Main control device for height-limiting portal frame
By designing a main control device for height-limiting gantry, the problem of high maintenance difficulty and cost caused by the lack of uniformity in the main control boards of height-limiting gantry was solved. This enabled the switching of slogans and control of lighting on the LED display screen, improved circuit reliability, and reduced maintenance costs.
Patent Information
- Application Number
- CN202520026919.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
The different manufacturers and production dates of the main control boards for height restriction gantries lead to inconsistencies in the control boards, making maintenance and repair difficult, prone to failure, and costly. In particular, the demand for lane LED screen control for height restriction gantries is high, and the existing technology makes replacement and repair costs high.
Design a main control device for height restriction gantry, including a slogan switching unit and a lighting control unit. The first optocoupler module detects the AC220V ETC control signal, and the MCU main control module generates control characters and transmits them to the LED display screen. The lighting control unit determines day and night through the light control switch module and controls the switching of the LED lights. The field effect transistor module controls the power supply of the LED lights. Electronic switches are used to replace relays to improve reliability.
It enables the switching of slogans and control of lighting on the LED display screen of the height restriction gantry, extends the life of the switch, improves the reliability of the circuit, and reduces maintenance and replacement costs.
Smart Images
Figure CN223770712U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of signal control technology, and more specifically, to a main control device for a height-limiting gantry. Background Technology
[0002] The main control boards for height restriction gantries at toll stations vary in manufacturer and production date, resulting in inconsistencies in control boards across certain road sections. This makes maintenance and repair difficult, and the gantry boards, having been in use for a long time, pose a significant risk of failure. Furthermore, the high demand necessitates control via lane LED screens for the height restriction gantries. Consequently, custom modifications to the main control boards for the height restriction gantries are essential. Replacing and repairing either the main control board or the lighting control for the height restriction gantries is extremely costly. Summary of the Invention
[0003] To address the above problems, this invention proposes a main control device for height restriction gantry, comprising: a slogan switching unit and a lighting control unit;
[0004] The slogan switching unit includes: a first optocoupler module, an MCU main control module, and a 232 communication module;
[0005] The first optocoupler module is used to detect the AC220V ETC control signal and send the detected AC220V ETC control signal to the MCU main control module;
[0006] The MCU main control module is used to determine the signal status of the AC220V ETC control signal, generate control characters based on the signal status, transmit the control characters to the height restriction gantry LED display screen through the 232 communication module, and control the target slogan of the height restriction gantry LED display screen based on the control characters.
[0007] The lighting control unit includes: a light control switch module, a second optocoupler module, a field-effect transistor module, a lighting control switch module, and a second power supply module;
[0008] The light-controlled switch module is used to determine day and night and outputs an AC220V control signal;
[0009] The second optocoupler module is used to detect the AC220V control signal output by the light-controlled switch module, and after filtering the AC220V control signal, control the on and off of the NMOS transistor to control the opening and closing of the DC power supply of the height-limiting gantry LED light.
[0010] The aforementioned field-effect transistor module is used to control the switching on and off of the DC12V and DC24V power supplies for the LED lights on the height-limiting gantry;
[0011] The lighting control module is used to control the on / off state of the LED lights on the height-limiting gantry.
[0012] Optionally, the slogan switching unit further includes: a first power module, which provides a 3.3V DC power supply.
[0013] Optionally, the first power module includes a voltage conversion circuit for converting AC220V voltage to DC12V voltage and DC12V voltage to DC3.3V voltage.
[0014] Optionally, the MCU main control module has a communication protocol that can identify the on / off state of the optocoupler and the switching state of the sign switch.
[0015] Optionally, the RS232 communication module has input and output interface sockets, which are connected to the main control device via an RS232 communication line and to the host computer via an RS232 communication line.
[0016] Optionally, the lighting control unit may further include a second power module for providing DC 12V power.
[0017] Optionally, the input terminal of the first optocoupler module is connected to an AC220V ETC control signal. If no AC220V ETC control signal is detected, it is in the cut-off state.
[0018] Optionally, the first optocoupler module outputs a 3.3V voltage as a high-level signal through a pull-up resistor.
[0019] Optionally, when the first optocoupler module detects an AC220V ETC control signal, it converts the AC current of the AC220V ETC control signal into a unidirectional pulsating current through a current-limiting resistor and a diode, driving the optocoupler to conduct and filter the output voltage through the capacitor at the optocoupler output terminal.
[0020] Optionally, a pull-up resistor can be used to bring the optocoupler output low.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0022] This invention provides a main control device for a height restriction gantry, comprising: a slogan switching unit and a lighting control unit; the slogan switching unit includes: a first optocoupler module, an MCU main control module, and a RS-232 communication module; the first optocoupler module is used to detect the AC220V ETC control signal and send the detected AC220V ETC control signal to the MCU main control module; the MCU main control module is used to determine the signal state of the AC220V ETC control signal, generate control characters based on the signal state, transmit the control characters to the height restriction gantry LED display screen through the RS-232 communication module, and control the height restriction gantry LED display screen based on the control characters. The display screen displays a target slogan; the lighting control unit includes: a light-controlled switch module, a second optocoupler module, a field-effect transistor module, a lighting control switch module, and a second power supply module; the light-controlled switch module is used to determine day and night and output an AC220V control signal; the second optocoupler module is used to detect the AC220V control signal output by the light-controlled switch module, and after filtering the AC220V control signal, controls the on / off state of the NMOS transistor to control the DC power supply of the height-limiting gantry LED light; the field-effect transistor module is used to control the on / off state of the DC12V and DC24V power supplies of the height-limiting gantry LED light; the lighting control module is used to control the on / off state of the height-limiting gantry LED light. This invention's main control device can realize the functions of slogan switching and lighting control. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the main control device of the present invention;
[0024] Figure 2 This is a schematic diagram of the slogan switching unit of the main control device of the present invention;
[0025] Figure 3 This is a schematic diagram of the lighting control unit of the main control device of the present invention. Detailed Implementation
[0026] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.
[0027] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.
[0028] Example 1:
[0029] This invention proposes a main control device for a height-limiting gantry, comprising: a slogan switching unit and a lighting control unit;
[0030] The slogan switching unit includes: a first optocoupler module, an MCU main control module, and a 232 communication module;
[0031] The first optocoupler module is used to detect the AC220V ETC control signal and send the detected AC220V ETC control signal to the MCU main control module;
[0032] The MCU main control module is used to determine the signal status of the AC220V ETC control signal, generate control characters based on the signal status, transmit the control characters to the height restriction gantry LED display screen through the 232 communication module, and control the target slogan of the height restriction gantry LED display screen based on the control characters.
[0033] The lighting control unit includes: a light control switch module, a second optocoupler module, a field-effect transistor module, a lighting control switch module, and a second power supply module;
[0034] The light-controlled switch module is used to determine day and night and outputs an AC220V control signal;
[0035] The second optocoupler module is used to detect the AC220V control signal output by the light-controlled switch module, and after filtering the AC220V control signal, control the on and off of the NMOS transistor to control the opening and closing of the DC power supply of the height-limiting gantry LED light.
[0036] The aforementioned field-effect transistor module is used to control the switching on and off of the DC12V and DC24V power supplies for the LED lights on the height-limiting gantry;
[0037] The lighting control module is used to control the on / off state of the LED lights on the height-limiting gantry.
[0038] The slogan switching unit also includes a first power module, which provides a 3.3V DC power supply.
[0039] The first power module includes a voltage conversion circuit for converting AC220V voltage to DC12V voltage and DC12V voltage to DC3.3V voltage.
[0040] The MCU main control module has a communication protocol that can identify the on / off state of the optocoupler and the switching state of the sign switch.
[0041] The RS232 communication module has input and output interface sockets, and is connected to the main control device via an RS232 communication line, and is also connected to the host computer via an RS232 communication line.
[0042] The lighting control unit also includes a second power module, which provides DC 12V power.
[0043] The input terminal of the first optocoupler module is connected to the AC220V ETC control signal. If the AC220V ETC control signal is not detected, it is in the cut-off state.
[0044] The first optocoupler module outputs a 3.3V voltage through a pull-up resistor as a high-level signal.
[0045] When the first optocoupler module detects the AC220V ETC control signal, it converts the AC current of the AC220V ETC control signal into a unidirectional pulsating current through a current-limiting resistor and a diode, which drives the optocoupler to conduct and filter the output voltage through the capacitor at the output terminal of the optocoupler.
[0046] The pull-up resistor keeps the optocoupler output at a low level. The invention will be further explained below with specific examples:
[0047] Specific case device structures, such as Figure 1 As shown, it includes:
[0048] Slogan switching function unit and lighting control function unit.
[0049] 1) Slogan switching function unit, including: optocoupler module, MCU main control module, 232 communication module, power supply module.
[0050] The aforementioned optocoupler module is used to detect AC220V ETC control signals;
[0051] The MCU main control module is used to process the slogan control function, and finally sends the required control characters to the LED display screen according to the AC220V signal status that controls the ETC display screen status.
[0052] The aforementioned 232 communication module is used for communication between the MCU main control module and the LED display screen;
[0053] The power module is used to provide a 3.3V DC power supply to the circuit.
[0054] 2) Lighting control function unit, including: light control switch module, optocoupler module, field effect transistor module, lighting control switch module, and power supply module.
[0055] The light control switch module is used to determine whether it is day or night, and to control whether the lights are on or off.
[0056] The optocoupler module is used to detect the on / off state of the AC220V control signal output by the light-controlled switch. The output signal of the optocoupler is filtered by RC to control the on / off state of the NMOS transistor, thereby controlling the opening and closing of the DC power supply of the LED lamp. Due to the use of this electronic switch, the switch life is extended and the reliability of the circuit is improved.
[0057] The aforementioned field-effect transistor module is used to control the switching on and off of the DC12V and DC24V required by the lights;
[0058] The lighting control module is used to control the on / off state of the lights;
[0059] The power module is used to provide the required DC 12V power.
[0060] The MCU main control module is based on the GD32E230C8T6 MCU, and the optocoupler on / off signal and slogan switch switching signal can be converted into a communication protocol that the main control board can recognize by modifying its program.
[0061] The RS232 communication module has an input interface and an output interface socket, located in the upper left corner of the rectangular circuit board, and is connected to the host computer and the main control board respectively via RS232 communication cables;
[0062] The power module has a voltage conversion circuit that converts AC220V voltage to DC12V voltage and DC12V voltage to DC3.3V voltage.
[0063] The optical coupler module and MCU module of the slogan switching function unit are specifically as follows: Figure 2 Specifically used for:
[0064] The AC220V is connected to the input terminal of the optocoupler. When there is no AC220V ETC control signal, the optocoupler output is in the off state, and the optocoupler outputs a 3.3V voltage through the pull-up resistor, which is a high-level signal.
[0065] When an AC220V ETC control signal is received, the AC220V voltage is converted into a unidirectional pulsating current through a current-limiting resistor and a diode. This current drives the optocoupler to conduct, and the capacitor at the optocoupler output terminal filters the output voltage, making it smoother. A pull-up resistor keeps the optocoupler output at a low level, which is detected by the MCU. Based on the high / low level changes of the optocoupler signal and the high / low level changes of the slogan toggle switch, the MCU sends the required control characters to the LED display screen.
[0066] The optocoupler module and field-effect transistor module of the lighting control function unit, specifically as follows: Figure 3 As shown, it is used for:
[0067] AC220V is connected to the input of the optocoupler through a series resistor and a rectifier diode. When there is no AC220V control signal from the light-controlled switch, the optocoupler output is in the off state, and the optocoupler outputs a 12V voltage, which is a high-level signal, through the pull-up resistor. This high level turns off the switching circuit composed of two NMOS transistors. Using two NMOS transistors makes the turn-off more reliable and prevents leakage current caused by incomplete turn-off. The output of the first-stage NMOS transistor has a resistor divider network, and the conduction voltage of the second-stage NMOS transistor can be set according to the resistor value.
[0068] When a 220V AC control signal is output from the light-controlled switch, the AC 220V voltage is converted into a unidirectional pulsating current through a current-limiting resistor and a diode, driving the optocoupler to conduct. When the optocoupler is on, a pull-up resistor causes the optocoupler output to go low. This low level turns on the switching circuit composed of two NMOS transistors, applying +12V and +24V voltages to the LED. The capacitor and resistor at the optocoupler output terminal perform RC filtering on the output voltage, making the output voltage smoother and ensuring reliable turn-off and cut-off of the NMOS transistors.
[0069] Replacing relays with electronic switches eliminates the drawbacks of relay contacts easily sticking together and overheating, extends switch life, and improves circuit reliability.
[0070] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.
[0071] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0072] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0073] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0074] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.
[0075] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A master control device for a height-limited portal frame, characterized in that The application relates to an ETC (electronic toll collection) control system for a height-limiting gate, which comprises a slogan switching unit and a light control unit. The slogan switching unit comprises a first optocoupler module, an MCU (micro control unit) master control module and a 232 communication module. The first optocoupler module is used for detecting an AC220V ETC control signal and sending the detected AC220V ETC control signal to the MCU master control module. The MCU master control module is used for determining the signal state of the AC220V ETC control signal, generating a control character based on the signal state, transmitting the control character to a height-limiting gate LED display screen through the 232 communication module and controlling the target slogan of the height-limiting gate LED display screen based on the control character. The light control unit comprises a light control switch module, a second optocoupler module, a field effect tube module, a light control switch module and a second power module. The light control switch module is used for judging day and night and outputting an AC220V control signal. The second optocoupler module is used for detecting the AC220V control signal output by the light control switch module, filtering the AC220V control signal and controlling the on-off of an NMOS tube to control the on-off of a height-limiting gate LED lamp DC power supply. The field effect tube module is used for controlling the on-off of a height-limiting gate LED lamp DC12V and DC24V power supply. The light control switch module is used for controlling the on-off of a height-limiting gate LED lamp. The slogan switching unit further comprises a first power module which is used for providing a 3.3V DC power supply.
2. The master device of claim 1, wherein, The first power module is provided with a voltage conversion circuit which is used for converting an AC220V voltage into a DC12V voltage and converting the DC12V voltage into a DC3.3V voltage.
3. The master device of claim 2, wherein, The MCU master control module is provided with a communication protocol which can identify the on-off amount of the optocoupler and the slogan switch switching amount.
4. The master device of claim 1, wherein, The 232 communication module is provided with an input interface and an output interface socket, is connected to the master control device through an RS232 communication line and is connected to an upper computer through the RS232 communication line.
5. The master device of claim 1, wherein, The light control unit further comprises a second power module which is used for providing a DC12V power supply.
6. The master device of claim 1, wherein, The input end of the first optocoupler module is connected to the AC220V ETC control signal, and if the AC220V ETC control signal is not detected, the first optocoupler module is in a cut-off state.
7. The master device of claim 1, wherein, The first optocoupler module outputs a 3.3V voltage through an upper pull resistor as a high-level signal.
8. The master device of claim 7, wherein, When the first optocoupler module detects the AC220V ETC control signal, the first optocoupler module converts the AC current of the AC220V ETC control signal into a unidirectional pulsating current through a current limiting resistor and a diode, drives the capacitor of the optocoupler output end to filter the output voltage and drives the optocoupler to be turned on.
9. The master device of claim 7, wherein, The upper pull resistor makes the optocoupler output be a low-level signal.
10. The master device of claim 8, wherein,