Mobile signal lamp system with state monitoring function

Abstract

The utility model relates to a mobile signal lamp system with state monitoring. Comprising a road traffic signal lamp and a controller module. The signal lamp driving control module is connected with the controller module and used for controlling the on-off state and brightness of the signal lamp; the signal lamp voltage and current state detection module is connected with the controller module and used for detecting the voltage and current states of the signal lamp; the ambient light intensity detection module is connected with the controller module and is used for detecting the ambient light intensity around the signal lamp; the battery voltage detection module is connected with the controller module and used for detecting the voltage state of a battery connected with the signal lamp; and the solar panel voltage detection module is connected with the controller module and is used for detecting the voltage state of the solar panel connected with the battery. The fault state is identified by detecting the voltage and current state of the signal lamp, so that the signal lamp flashes yellow; the brightness of the signal lamp is adjusted by detecting the ambient light intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of road traffic signal control, in particular to a mobile signal light system with state monitoring. Background Art

[0002] Mobile road traffic lights use batteries as power sources. Due to weather conditions and long working hours, the battery voltage may be too low, making the signal light control system unable to work properly.

[0003] In addition, as electronic products, mobile road traffic lights are also affected by component failure or component aging after long-term operation, which can cause the lights to fail to light up or go out normally, resulting in serious faults such as traffic right conflicts, abnormal red light going out, abnormal yellow light lighting, or simultaneous lighting of red and green lights. Summary of the invention

[0004] To this end, the utility model provides a mobile signal light system with status monitoring, which can identify fault status by detecting the voltage and current status of the signal light, identify battery undervoltage status by detecting the battery voltage status, and adjust the brightness of the signal light by detecting the surrounding ambient light intensity.

[0005] In order to solve the above technical problems, the utility model provides a mobile signal light system with state monitoring, comprising:

[0006] Controller module;

[0007] A signal light drive control module, connected to the controller module, for controlling the on / off state and brightness of the signal light;

[0008] A signal lamp voltage and current state detection module, connected to the controller module, for detecting the voltage and current state of the signal lamp;

[0009] An ambient light intensity detection module, connected to the controller module, for detecting the ambient light intensity around the signal light;

[0010] A battery voltage detection module, connected to the controller module, for detecting the voltage state of a battery connected to the signal light;

[0011] The solar panel voltage detection module is connected to the controller module and is used to detect the voltage state of the solar panel connected to the battery.

[0012] In one embodiment of the present invention, it also includes a communication module connected to the main control module and a cloud platform connected to the communication module.

[0013] In one embodiment of the utility model, the controller module includes a main control module, a TTL communication port, an RS232 communication port, an Ethernet module and a 4G module. The controller module is connected to the GPS through the TTL communication port, and the controller module is connected to the human-computer interaction end through the RS232 communication port; the controller module is connected to the cloud platform through the Ethernet module and the 4G module respectively.

[0014] In one embodiment of the utility model, a base station and a switch are also included, and the cloud platform is connected to the 4G module through the base station and is connected to the Ethernet module through the switch.

[0015] In one implementation of the present utility model, the human-computer interaction terminal includes a touch screen.

[0016] In one implementation of the present invention, the signal light driving control module includes a plurality of cascaded 8-bit serial input / parallel output shift registers.

[0017] In an implementation manner of the present utility model, the signal lamp voltage and current state detection module includes a plurality of cascaded 8-bit parallel input / serial output shift registers.

[0018] In one embodiment of the utility model, the ambient light intensity monitoring module includes a resistor R8, a photoresistor R11 and a capacitor C1, one end of the photoresistor R11 is connected to one end of the capacitor C1 and then grounded, the other end of the photoresistor R11 is connected to one end of the resistor R8 and the other end of the capacitor C1, the other end of the resistor R8 is connected to the power supply VCC, and the other end of the photoresistor R11, one end of the resistor R8 and the other end of the capacitor C1 are connected to each other and then connected to the ADC pin of the controller module.

[0019] In one embodiment of the utility model, the battery voltage detection module includes a resistor R9, a resistor R12 and a capacitor C2, one end of the resistor R12 is connected to one end of the capacitor C2 and then grounded, the other end of the resistor R12 is connected to one end of the resistor R9 and the other end of the capacitor C2, the other end of the resistor R9 is connected to the output end BAT of the battery, and the other end of the resistor R12, one end of the resistor R9 and the other end of the capacitor C2 are connected to each other and then connected to the ADC pin of the controller module.

[0020] In one embodiment of the utility model, the solar panel voltage detection module includes a resistor R10, a resistor R13 and a capacitor C3, one end of the resistor R13 is connected to one end of the capacitor C3 and then grounded, the other end of the resistor R13 is connected to one end of the resistor R10 and the other end of the capacitor C3, the other end of the resistor R10 is connected to the output end SOLAR of the solar panel, and the other end of the resistor R13, one end of the resistor R10 and the other end of the capacitor C3 are connected to each other and then connected to the ADC pin of the controller module.

[0021] The above technical solution of the utility model has the following advantages compared with the prior art:

[0022] The utility model discloses a mobile signal light system with status monitoring, which identifies the fault status by detecting the voltage and current status of the signal light, identifies the battery undervoltage status by detecting the battery voltage status, makes the signal light flash yellow, and pushes the status information to the cloud platform in real time, thus realizing the fault status monitoring and self-diagnosis functions; and adjusts the brightness of the signal light by detecting the ambient light intensity, thus reducing the visual impact of the signal light on pedestrians or drivers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0024] Figure 1 It is an overall frame structure diagram of the mobile signal light system of the utility model.

[0025] Figure 2 This is the circuit structure diagram of the ambient light intensity detection module.

[0026] Figure 3 This is the circuit structure diagram of the battery voltage detection module.

[0027] Figure 4 This is the circuit structure diagram of the solar panel voltage detection module.

[0028] Figure 5 This is the circuit structure diagram of the signal light drive control module.

[0029] Figure 6 This is the circuit structure diagram of the voltage and current state detection module. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0031] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0033] Reference Figure 1 As shown, a mobile signal light system with state monitoring, the signal light includes a red light, a yellow light and a green light, including:

[0034] Controller module;

[0035] A signal light drive control module, connected to the controller module, for controlling the on / off state and brightness of the signal light;

[0036] A signal lamp voltage and current state detection module, connected to the controller module, for detecting the voltage and current state of the signal lamp;

[0037] An ambient light intensity detection module, connected to the controller module, for detecting the ambient light intensity around the signal light;

[0038] A battery voltage detection module, connected to the controller module, for detecting the voltage state of a battery connected to the signal light;

[0039] The solar panel voltage detection module is connected to the controller module and is used to detect the voltage state of the solar panel connected to the battery.

[0040] Through the above-mentioned settings, the controller module can identify the brightness state of the signal light according to the battery voltage state and the ambient light intensity, and adjust the brightness of the signal light through the signal light drive control module; in addition, it can also identify the fault state of the signal light according to the voltage and current state of the signal light, identify the undervoltage state of the battery according to the battery voltage state, and make the signal light flash yellow through the signal light drive control module.

[0041] It can be understood that the voltage state of the battery is equivalent to the power supply voltage. The voltage of the signal light is output to both ends of the signal light through the MOS switch circuit. The voltage of each signal light is independent, so the voltage of each signal light is detected. There are 24 voltage states and 24 current states for 8 groups of red, yellow and green signal lights.

[0042] In one embodiment, referring to Figure 1 As shown, the controller module includes a main control module, a TTL communication port, an RS232 communication port, an Ethernet module and a 4G module. The main control module is connected to the GPS through the TTL communication port, to the human-computer interaction end through the RS232 communication port, and to the cloud platform through the Ethernet module and the 4G module.

[0043] The main control module adopts the chip STM32F103VCT6.

[0044] The TTL communication port is connected to the GPS and can automatically calibrate the system time.

[0045] The human-computer interaction terminal includes a touch screen, which can use the private protocol provided by the touch screen to display and set system operation status, timing parameters and other details.

[0046] In addition, it also includes a base station and a switch, and the cloud platform is connected to the 4G module through the base station and to the Ethernet module through the switch. It can update the operating status, location positioning, timing parameters and other information of the traffic light to the cloud platform regularly, and send it to the cloud platform when a fault alarm or undervoltage warning occurs. An internal private protocol is used during data transmission, and the cloud platform acts as a server.

[0047] Through the above settings, the human-computer interaction terminal and the cloud platform can receive the recognition results of the undervoltage state and fault state of the signal light; through the positioning information and time information obtained by the GPS, automatic time calibration is performed, and the positioning information of the signal light is output to the cloud platform.

[0048] In one embodiment, referring to Figure 5 As shown, the signal light driving control module includes a plurality of cascaded 8-bit serial input / parallel output shift registers, and the model of the shift register is 74HC595D.

[0049] The controller sends 3 bytes of data serially in a shifted manner, and each bit is used as a control signal for the drive circuit. A certain bit outputs a "1" level to the drive circuit to light up the corresponding signal light. A certain bit outputs a "0" level to the drive circuit to turn off the corresponding signal light. The controller outputs a 100Hz PWM signal to the OE pin of the 74HC595D, and controls the brightness of the signal light by adjusting the PWM duty cycle.

[0050] In one embodiment, referring to Figure 6 As shown, the signal lamp voltage and current state detection module includes multiple cascaded 8-bit parallel input / serial output shift registers, the model of which is 74HC165D. The controller reads 6 bytes of data serially in a shift manner, and each bit is used as a feedback signal of the detection circuit. If there is voltage or current at a certain signal lamp end, the corresponding data bit is input with a "1" level to the controller. If there is no voltage or current at a certain signal lamp end, the corresponding data bit is input with a "0" level to the controller.

[0051] In one embodiment, referring to Figure 2 As shown, the ambient light intensity monitoring module includes a resistor R8, a photoresistor R11 and a capacitor C1, one end of the photoresistor R11 is connected to one end of the capacitor C1 and then grounded, the other end of the photoresistor R11 is connected to one end of the resistor R8 and the other end of the capacitor C1, the other end of the resistor R8 is connected to a power supply VCC, and the other end of the photoresistor R11, one end of the resistor R8 and the other end of the capacitor C1 are connected to each other and then connected to the ADC pin of the controller module.

[0052] The ambient light intensity is converted into a voltage value through a resistor and a photoresistor voltage divider, and connected to the ADC pin of the main control chip. According to the 3.3V power supply and the upper arm 100k ratio, the average resistance of the photoresistor R11 under 110lx illumination is 37k, and the sampling voltage is 0.9V; the average resistance of the photoresistor R11 under 55lx illumination is 70k, and the sampling voltage is 1.3V. When the main control chip controls the brightness of the signal light according to the obtained ambient light intensity, the relationship between the sampling voltage of the photoresistor R11 and the PWM duty cycle is shown in Table 1.

[0053] Table 1: Relationship between photoresistor sampling voltage and PWM duty cycle

[0054]

[0055] In one embodiment, referring to Figure 3 As shown, the battery voltage detection module includes a resistor R9, a resistor R12 and a capacitor C2, one end of the resistor R12 is connected to one end of the capacitor C2 and then grounded, the other end of the resistor R12 is connected to one end of the resistor R9 and the other end of the capacitor C2, the other end of the resistor R9 is connected to the output end BAT of the battery, and the other end of the resistor R12, one end of the resistor R9 and the other end of the capacitor C2 are connected to each other and then connected to the ADC pin of the controller module.

[0056] In one embodiment, referring to Figure 4As shown, the solar panel voltage detection module includes a resistor R10, a resistor R13 and a capacitor C3, one end of the resistor R13 is connected to one end of the capacitor C3 and then grounded, the other end of the resistor R13 is connected to one end of the resistor R10 and the other end of the capacitor C3, the other end of the resistor R10 is connected to the output end SOLAR of the solar panel, and the other end of the resistor R13, one end of the resistor R10 and the other end of the capacitor C3 are connected to each other and then connected to the ADC pin of the controller module.

[0057] pass Figure 3 and Figure 4 The circuit divides the battery voltage and the solar panel voltage respectively, limits them to the 3.3V voltage range allowed by the main control chip, and connects them to the ADC pin of the main control chip. When the main control chip controls the brightness of the signal light according to the battery voltage and the solar panel voltage, the relationship between the battery voltage, the solar panel voltage and the PWM duty cycle is shown in Table 2.

[0058] Table 2: Battery voltage, solar panel voltage and PWM duty cycle

[0059]

[0060] In one embodiment, as shown in Table 2, the controller module identifies the battery undervoltage state by analyzing the battery voltage state; when the battery voltage is lower than 10.5V, the controller module identifies the battery undervoltage state, automatically downgrades operation, flashes the yellow light through the signal light drive control module, and sends information to the platform end through the 4G communication module or the Ethernet communication module. After 5 minutes, all signal lights are turned off; the battery voltage state is analyzed, and when the battery voltage is higher than 11.5V, the controller module identifies the battery undervoltage recovery state, and the red, yellow, and green signal lights are normally cycled through the drive control module.

[0061] The controller module identifies fault information by analyzing the output state, voltage state, and current state of the signal light; outputs a "1" level to the red light in the drive circuit module, detects that its voltage state or current state is "0", and identifies the abnormal extinguishing fault of the red light; outputs a "0" level to the yellow light in the drive circuit module, detects that its voltage state or current state is "1", and identifies the abnormal lighting fault of the yellow light; detects that the voltage states of the red and green lights of the same group of signal lights are both "1", and identifies the simultaneous lighting fault of the red and green lights; according to the voltage state of the green lights of the signal lights in each direction, query the traffic flow right-of-way conflict table shown in Table 3 to identify the traffic flow right-of-way conflict fault; the controller identifies the fault state, automatically downgrades operation, flashes the yellow light through the drive control module, and sends information to the platform end through the 4G communication module or the Ethernet communication module. After 3 minutes of continuous yellow flashing, it recovers and re-identifies the fault state. If the fault still exists after returning 3 times, the yellow light flashes through the drive control module all the time, and waits for maintenance personnel to repair and restart.

[0062] Table 3: Traffic flow right-of-way conflict table

[0063]

[0064] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A mobile signal light system with status monitoring, characterized in that: include: Controller module; A signal light drive control module, connected to the controller module, for controlling the on / off state and brightness of the signal light; A signal lamp voltage and current state detection module, connected to the controller module, for detecting the voltage and current state of the signal lamp; An ambient light intensity detection module, connected to the controller module, for detecting the ambient light intensity around the signal light; A battery voltage detection module, connected to the controller module, for detecting the voltage state of a battery connected to the signal light; The solar panel voltage detection module is connected to the controller module and is used to detect the voltage state of the solar panel connected to the battery.

2. A mobile signal light system with status monitoring according to claim 1, characterized in that: The controller module includes a main control module, a TTL communication port, an RS232 communication port, an Ethernet module and a 4G module. The main control module is connected to the GPS through the TTL communication port, to the human-computer interaction end through the RS232 communication port, and to the cloud platform through the Ethernet module and the 4G module.

3. A mobile signal light system with status monitoring according to claim 2, characterized in that: It also includes a base station and a switch, and the cloud platform is connected to the 4G module through the base station and to the Ethernet module through the switch.

4. A mobile signal light system with status monitoring according to claim 2, characterized in that: The human-computer interaction terminal includes a touch screen.

5. A mobile signal light system with status monitoring according to claim 1, characterized in that: The signal light driving control module includes a plurality of cascaded 8-bit serial input / parallel output shift registers.

6. A mobile signal light system with status monitoring according to claim 1, characterized in that: The signal lamp voltage and current state detection module includes a plurality of cascaded 8-bit parallel input / serial output shift registers.

7. A mobile signal light system with status monitoring according to claim 1, characterized in that: The ambient light intensity monitoring module includes a resistor R8, a photoresistor R11 and a capacitor C1, one end of the photoresistor R11 is connected to one end of the capacitor C1 and then grounded, the other end of the photoresistor R11 is connected to one end of the resistor R8 and the other end of the capacitor C1, the other end of the resistor R8 is connected to a power supply VCC, and the other end of the photoresistor R11, one end of the resistor R8 and the other end of the capacitor C1 are connected to each other and then connected to the ADC pin of the controller module.

8. The mobile signal light system with status monitoring according to claim 1, characterized in that: The battery voltage detection module includes a resistor R9, a resistor R12 and a capacitor C2, one end of the resistor R12 is connected to one end of the capacitor C2 and then grounded, the other end of the resistor R12 is connected to one end of the resistor R9 and the other end of the capacitor C2, the other end of the resistor R9 is connected to the output end BAT of the battery, and the other end of the resistor R12, one end of the resistor R9 and the other end of the capacitor C2 are connected to each other and then connected to the ADC pin of the controller module.

9. The mobile signal light system with status monitoring according to claim 1, characterized in that: The solar panel voltage detection module includes a resistor R10, a resistor R13 and a capacitor C3, one end of the resistor R13 is connected to one end of the capacitor C3 and then grounded, the other end of the resistor R13 is connected to one end of the resistor R10 and the other end of the capacitor C3, the other end of the resistor R10 is connected to the output end SOLAR of the solar panel, and the other end of the resistor R13, one end of the resistor R10 and the other end of the capacitor C3 are connected to each other and then connected to the ADC pin of the controller module.

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