A solar-powered strobe warning device for highways

Abstract

This utility model relates to the field of traffic warning device technology, specifically a solar-powered strobe warning device for highways. It includes a controller, a sensor acquisition device, a strobe warning module, and a power supply module electrically connected to the controller. The sensor acquisition device includes a traffic flow sensor, a vehicle speed sensor, and a visibility sensor. A preset control logic circuit in the controller is electrically connected to the traffic flow sensor, vehicle speed sensor, and visibility sensor, respectively. The preset control logic circuit includes a first comparison circuit, a second comparison circuit, a third comparison circuit, and a frequency control circuit. The outputs of the first, second, and third comparison circuits are electrically connected to the input of the frequency control circuit, and the output of the frequency control circuit is electrically connected to the strobe warning module. This application can dynamically adjust the working state of the warning device according to actual vehicle driving conditions data on the highway, effectively improving the accuracy of the warning device's operation.

Description

Technical Field

[0001] This utility model relates to the technical field of traffic warning devices, specifically a solar-powered flashing warning device for highways. Background Technology

[0002] In the highway traffic safety system, warning devices are a crucial component, serving to promptly convey road environment information to drivers and prevent and reduce traffic accidents. Currently, most warning devices widely used on highways employ fixed operating modes and preset parameters. For example, some warning lights flash at set time intervals, or warning signs maintain the same display state on specific road sections, making it difficult to flexibly adjust according to actual traffic conditions and environmental changes.

[0003] Existing warning devices suffer from significant shortcomings in dynamic adaptability. Currently, most warning devices rely solely on visibility detection as a single factor to adjust their operation. In actual highway operation scenarios, vehicle driving conditions are complex and ever-changing, with significant differences in traffic flow and speed distribution across different times and road sections. However, relying solely on visibility detection data cannot fully reflect these actual vehicle driving conditions. For example, in sections with relatively good visibility but extremely high traffic volume and low speeds, warning devices operating according to visibility-based settings may not be able to provide sufficiently strong or targeted warning information in a timely manner; while in sections with low visibility but low traffic volume and high speeds, warning devices may overreact and interfere with drivers' normal driving. This reliance solely on visibility detection reduces the accuracy and adaptability of warning devices, making them unable to adapt to the complex and ever-changing actual highway environment and unable to achieve optimal warning effects in different scenarios, thus affecting the overall traffic safety level of highways.

[0004] Chinese Patent Publication No. CN214948740U discloses a solar-powered fog warning light for highways, comprising a solar panel, an upper mounting plate, a central support plate, a reflective film, a warning light assembly, a mounting column, and a control module, a visibility detection module, a comparison module, a warning light module, a synchronous flashing controller, and a battery module disposed within the central support plate. The solar panel is electrically connected to the battery module, the battery module is electrically connected to the control module, the output of the visibility detection module is connected to the input of the comparison module, the output of the comparison module is connected to the input of the control module, the output of the control module is connected to the input of the synchronous flashing controller, the synchronous flashing controller is connected to the warning light module, and the warning light module is connected to the warning light assembly. This solution cannot dynamically adjust the working state of the warning device based on actual vehicle driving conditions data on the highway, relying solely on visibility detection, which reduces the accuracy and adaptability of the warning device. Utility Model Content

[0005] This utility model aims to provide a solar-powered flashing warning device for highways, which effectively solves the problem that the working state of the warning device cannot be dynamically adjusted according to the actual vehicle driving conditions on the highway, and that relying solely on visibility detection reduces the accuracy and adaptability of the warning device. The new device can dynamically adjust its working state according to the actual vehicle driving conditions on the highway, effectively improving the accuracy and adaptability of the warning device and ensuring highway driving safety.

[0006] This application provides the following technical solution:

[0007] A solar-powered strobe warning device for highways includes a controller, a sensor acquisition device, a strobe warning module, and a power supply module electrically connected to the controller. The power supply module includes a solar panel, a battery, and a mains power interface. The solar panel is electrically connected to the battery, and the battery is connected in parallel with the mains power interface and then electrically connected to the controller. The power supply module is used to supply power to the solar-powered strobe warning device.

[0008] The sensor acquisition device includes a traffic flow sensor, a vehicle speed sensor, and a visibility sensor. The output terminals of the traffic flow sensor, vehicle speed sensor, and visibility sensor are electrically connected to the input terminal of the controller. The controller includes a preset control logic circuit, which is electrically connected to the traffic flow sensor, vehicle speed sensor, and visibility sensor. The preset control logic circuit includes a first comparison circuit, a second comparison circuit, a third comparison circuit, and a frequency control circuit. The first comparison circuit is electrically connected to the visibility sensor, the second comparison circuit is electrically connected to the traffic flow sensor, and the third comparison circuit is electrically connected to the vehicle speed sensor. The output terminals of the first, second, and third comparison circuits are electrically connected to the input terminal of the frequency control circuit, and the output terminal of the frequency control circuit is electrically connected to the strobe warning module.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. Existing technologies rely solely on visibility detection modules, controlling the warning light array based solely on visibility conditions. This fails to consider the actual driving conditions of vehicles on highways. In contrast, the sensor acquisition device of this application includes a traffic flow sensor, a vehicle speed sensor, and a visibility sensor. The controller's preset control logic circuit includes a first comparison circuit, a second comparison circuit, and a third comparison circuit, each electrically connected to one of these three sensors. The outputs of these three comparison circuits are all electrically connected to a frequency control circuit. The traffic flow sensor can acquire real-time information on the number of vehicles on the highway, the vehicle speed sensor can accurately measure vehicle speed, and the visibility sensor provides visibility data. The frequency control circuit integrates the outputs of these three comparison circuits and dynamically adjusts the flashing frequency of the strobe warning module. For example, when traffic flow is high, vehicle speed is fast, and visibility is low, the flashing frequency is increased to make the warning effect more significant; conversely, the frequency is decreased. This multi-dimensional data-based adjustment avoids the limitations of existing technologies that rely solely on visibility, greatly improving the accuracy of the warning device.

[0011] 2. Existing technologies, which control warning lights solely based on visibility, are poorly adaptable to the complex and ever-changing driving conditions on highways. This application differs. The frequency control circuit in the preset control logic circuit of this application can flexibly change the operating state of the flashing warning module based on data collected by traffic flow sensors, vehicle speed sensors, and visibility sensors. In different highway scenarios, such as high traffic volume during morning and evening rush hours, high vehicle speeds at night, or low visibility in foggy weather, the frequency control circuit can precisely adjust the flashing frequency according to the actual situation by analyzing the data from each sensor. For example, in sections with low traffic volume, even with low visibility, the flashing frequency can be appropriately reduced to avoid excessive warnings causing driver fatigue. In sections with high traffic volume and high speeds, the flashing frequency can be increased to attract sufficient driver attention. This ability to flexibly adjust according to actual vehicle driving conditions avoids the shortcomings of existing technologies and significantly enhances the adaptability of the warning device to different highway scenarios.

[0012] Furthermore, it also includes a wireless communication module, which is electrically connected to the controller. The controller is used to send the controller's control signals and the working status of the strobe warning module to an external remote control terminal through the wireless communication module. The controller is also used to receive remote control commands from the external remote control terminal through the wireless communication module.

[0013] By setting up a wireless communication module that is electrically connected to the controller, the controller can send control signals and the working status of the flashing warning module to an external remote terminal via the wireless communication module, and can also receive remote control commands. This overcomes the limitation of traditional warning devices requiring on-site operation and enhances the adaptability of the warning device to different scenarios.

[0014] Furthermore, it also includes a power monitoring and early warning device, which includes a power monitoring sensor and a battery status analysis circuit. The power monitoring sensor and the battery status analysis circuit are electrically connected to the battery, and the controller is electrically connected to both the power monitoring sensor and the battery status analysis circuit.

[0015] By setting up a power monitoring and early warning device, in which the power monitoring sensor and the battery status analyzer are electrically connected to the battery respectively, and the controller is electrically connected to both respectively, the power monitoring sensor acquires the battery power data in real time and transmits it to the battery status analyzer. The battery status analyzer performs in-depth analysis of the received data and then transmits the analysis results to the controller. Based on this information, the controller can promptly grasp the working status of the battery. When the power is too low or the battery is abnormal, it can issue an early warning to remind relevant personnel to take measures, such as timely charging or replacement of the battery, to avoid the warning device suddenly stopping working due to insufficient power, thus ensuring the stable operation of the warning device.

[0016] Furthermore, the sensor acquisition device also includes a tilt sensor, a temperature and humidity sensor, a light intensity sensor, and a vibration sensor electrically connected to the input terminal of the controller. The preset control logic circuit also includes a fourth comparison circuit, a fifth comparison circuit, a sixth comparison circuit, and a seventh comparison circuit electrically connected to the tilt sensor, the temperature and humidity sensor, the light intensity sensor, and the vibration sensor, respectively. The output terminals of the fourth comparison circuit, the fifth comparison circuit, the sixth comparison circuit, and the seventh comparison circuit are electrically connected to the input terminal of the frequency control circuit.

[0017] By setting up tilt sensors, temperature and humidity sensors, light intensity sensors, and vibration sensors electrically connected to the controller input, and with the addition of fourth, fifth, sixth, and seventh comparison circuits, the signals from each sensor are compared with preset values ​​and then output to the frequency control circuit. This enables real-time monitoring and precise response to the tilt state of the equipment, ambient temperature and humidity, light intensity, and vibration. The operating frequency can be dynamically adjusted according to multi-dimensional environmental parameters, improving environmental adaptability and control accuracy.

[0018] Furthermore, it also includes a tilt monitoring device, which includes a data processing circuit and a tilt alarm threshold circuit. The tilt sensor is electrically connected to the input terminal of the data processing circuit, the output terminal of the data processing circuit is electrically connected to the wireless communication module and the tilt alarm threshold circuit, and the output terminal of the tilt alarm threshold circuit is electrically connected to the controller.

[0019] By setting up a tilt monitoring device, tilt sensors collect tilt data in real time and transmit it to a data processing circuit. After analyzing and processing the received data, the data processing circuit sends the data out via a wireless communication module for remote monitoring of the equipment's tilt status. Simultaneously, it transmits the data to a tilt alarm threshold circuit. This circuit compares the data against a preset threshold. When the tilt data exceeds the threshold range, its output sends an alarm signal to the controller. Upon receiving the signal, the controller can take timely measures, such as adjusting the warning device's operating status or notifying maintenance personnel. This allows for timely detection of tilt anomalies in the warning device, preventing tilt from affecting its normal operation, ensuring the stability and reliability of the warning device in highway environments, and improving the warning effect.

[0020] Furthermore, the strobe warning module includes a strobe warning light group, a dot matrix display unit, and a mode control circuit. The controller is used to send a mode selection command to the mode control circuit via the SPI bus. The controller is also used to drive the mode control circuit to parse the mode selection command and generate light group control signals and dot matrix drive commands. The controller is also used to control the start / stop and flashing frequency of the strobe warning light group according to the light group control signals. The controller is also used to display preset text information on the dot matrix display unit according to the dot matrix drive commands.

[0021] By utilizing the SPI bus for communication, the controller sends mode selection commands to the mode control circuit via the SPI bus. After parsing the commands, the mode control circuit generates light group control signals and dot matrix drive commands, enabling the controller to precisely regulate the strobe warning lights and the dot matrix display unit. Based on the light group control signals, the controller can flexibly control the start / stop and flashing frequency of the strobe warning lights to adapt to different road conditions and warning needs, enhancing the warning effect. At the same time, based on the dot matrix drive commands, the dot matrix display unit can clearly display preset text information, providing drivers with more intuitive warnings, enriching the warning methods, improving the flexibility and targeting of the warning device, and ensuring driving safety.

[0022] Furthermore, the strobe warning module also includes a strobe warning drive circuit, and the strobe warning light group includes a red and blue strobe light group and a yellow warning light group. The red and blue strobe light group and the yellow warning light group are electrically connected to the mode control circuit through the strobe warning drive circuit.

[0023] By setting up a strobe warning drive circuit and electrically connecting the red-blue strobe light group and the yellow warning light group to the mode control circuit respectively, a highly efficient and orderly drive control system is constructed. During operation, the mode control circuit generates corresponding control signals according to preset logic or received instructions, and transmits them to the strobe warning drive circuit. The strobe warning drive circuit accurately processes and amplifies the signals, and then drives the red-blue strobe light group and the yellow warning light group to work respectively. The red-blue strobe light group can produce a strong visual impact by flashing alternately, while the yellow warning light group provides a continuous warning with stable light or a specific flashing frequency. This allows the strobe warning module to flexibly switch the working mode of the light group according to different scenarios, enriching the warning forms and enhancing the warning effect.

[0024] Furthermore, the mode control circuit includes a programmable memory and a multiplexer. The programmable memory is used to store preset warning mode parameters, and the multiplexer is used to switch the output channel according to the mode selection command.

[0025] By combining the programmable memory and the multiplexer in the mode control circuit, flexible and diverse warning mode control is achieved. The programmable memory stores multiple preset warning mode parameters in advance, providing customized warning solutions for different scenarios. During operation, the multiplexer accurately switches the output channel according to the received mode selection command, selects the corresponding warning mode parameters from the programmable memory and outputs them, enabling the flashing warning module to quickly and accurately switch to the required warning mode, adapting to different conditions on highways such as fog, accidents, and congestion, enhancing the adaptability and flexibility of the warning device, and effectively improving the warning effect.

[0026] Furthermore, it also includes a voice module, which includes a voice control chip, a speaker, and a communication interface. The communication interface is electrically connected to the controller and is used to receive control signals. The voice control chip is electrically connected to the communication interface and is used to process and generate voice data. The speaker is electrically connected to the voice control chip and is used to play voice.

[0027] By setting up a voice module and utilizing the collaborative work of a voice control chip, speaker, and communication interface, the communication interface is electrically connected to the controller during operation. It can receive control signals sent by the controller in real time. These signals carry the voice information instructions to be played and are transmitted to the voice control chip. The voice control chip, as the core processing unit, parses and processes the received control signals to generate corresponding voice data. Subsequently, the voice data is transmitted to the speaker that is electrically connected to it. The speaker converts the electrical signals into sound signals for playback, enabling the warning device to not only provide warnings through lights but also improve the safety of driving on highways. Attached Figure Description

[0028] Figure 1 This is a logic block diagram of a solar-powered flashing warning device for highways according to the present invention.

[0029] Figure 2 This is an electrical schematic diagram of a solar-powered flashing warning device for highways according to the present invention. Detailed Implementation

[0030] The following detailed description illustrates the specific implementation method:

[0031] like Figures 1 to 2 As shown, a solar-powered strobe warning device for highways includes a controller, a sensor acquisition device, a strobe warning module, and a power supply module electrically connected to the controller. The power supply module includes a solar panel, a battery, and a mains power interface. The solar panel is electrically connected to the battery, and the battery is connected in parallel with the mains power interface and then electrically connected to the controller. The power supply module is used to supply power to the solar-powered strobe warning device.

[0032] The sensor acquisition device includes a traffic flow sensor, a vehicle speed sensor, and a visibility sensor. The output terminals of the traffic flow sensor, vehicle speed sensor, and visibility sensor are electrically connected to the input terminals of the controller. The controller includes a preset control logic circuit, which is electrically connected to the traffic flow sensor, vehicle speed sensor, and visibility sensor. The preset control logic circuit includes a first comparison circuit, a second comparison circuit, a third comparison circuit, and a frequency control circuit. The first comparison circuit is electrically connected to the visibility sensor, the second comparison circuit is electrically connected to the traffic flow sensor, and the third comparison circuit is electrically connected to the vehicle speed sensor. The output terminals of the first comparison circuit, the second comparison circuit, and the third comparison circuit are electrically connected to the input terminals of the frequency control circuit. The output terminal of the frequency control circuit is electrically connected to the strobe warning module.

[0033] This solar-powered strobe warning device acquires real-time environmental and traffic data through a sensor acquisition system. The data is then processed by a preset control logic circuit within the controller to adjust the frequency of the strobe warning module. Specifically, the power supply module charges the battery via a solar panel, and the battery is connected in parallel with the mains power interface to supply power to the device. In the sensor acquisition system, a visibility sensor detects real-time environmental visibility, a traffic flow sensor detects the number of vehicles passing per unit time (e.g., per hour), and a vehicle speed sensor detects the average speed of vehicles. The preset control logic circuit within the controller includes three comparison circuits and a frequency control circuit: the first comparison circuit compares the real-time visibility with preset visibility thresholds (e.g., a low visibility threshold of 50 meters and a high visibility threshold of 200 meters). For example, when visibility is below 50 meters, a strong signal is output, driving the frequency control circuit to set the base strobe frequency to 2Hz; when visibility is between 50 and 200 meters, a medium signal is output with a base frequency of 1Hz; and when visibility is above 200 meters, a weak signal is output with a base frequency of 0.5Hz. The second comparator circuit compares the real-time traffic flow with preset traffic flow thresholds (e.g., a low flow threshold of 50 vehicles / hour and a high flow threshold of 200 vehicles / hour). When the traffic flow exceeds 200 vehicles / hour, it outputs a strong signal, driving the frequency control circuit to increase the base frequency by 1Hz; when the traffic flow is between 50 and 200 vehicles / hour, it outputs a medium signal, increasing it by 0.5Hz; when the traffic flow is below 50 vehicles / hour, it outputs a weak signal without increasing the frequency. The third comparator circuit compares the real-time vehicle speed with preset vehicle speed thresholds (e.g., a low speed threshold of 60 km / h and a high speed threshold of 120 km / h). When the vehicle speed exceeds 120 km / h, it outputs a strong signal, fine-tuning the frequency by increasing it by 0.2Hz; when the vehicle speed is between 60 and 120 km / h, it outputs a medium signal, increasing it by 0.1Hz; when the vehicle speed is below 60 km / h, it outputs a weak signal without adjustment. The frequency control circuit integrates the output signals of three comparison circuits (visibility signal weight 60%, traffic flow signal weight 30%, and vehicle speed signal weight 10%) and determines the final strobe frequency through weighted calculation: For example, when visibility is low (below 50 meters, base 2Hz) and traffic flow is high (above 200 vehicles / hour, +1Hz), the total frequency = 2×0.6 + 1×0.3 + 0×0.1 = 1.5Hz; when visibility is low but traffic flow is low (below 50 vehicles / hour, no increase), the total frequency = 2×0.6 + 0×0.1. 3 + 0 × 0.1 = 1.2 Hz; when visibility is high (above 200 meters, base 0.5 Hz) and traffic volume is large (+0.5 Hz), the total frequency = 0.5 × 0.6 + 0.5 × 0.3 + 0 × 0.1 = 0.45 Hz; when visibility is high and traffic volume is small (not increasing), the total frequency = 0.5 × 0.6 + 0 × 0.3 + 0 × 0.1 = 0.3 Hz, thus achieving a higher strobe frequency with lower visibility and a lower strobe frequency with higher visibility, while distinguishing the influence of traffic volume on frequency under different visibility conditions.

[0034] In this embodiment, the controller is a PLC, which stands for Programmable Logic Controller, preferably a Siemens S7-1500 PLC.

[0035] The solar-powered strobe warning device is powered by AC220V mains or DC12V battery. Battery power can support 6 hours of continuous operation with a maximum operating power of 25W and a standby power of 2W. It is installed as a column with an angle of 45° to 90° between the front of the device and the direction of oncoming traffic. The operating environment is: temperature -20℃ to +40℃, humidity 5% to 95%RH. The dimensions are 720mm × 430mm × 190mm, the protection rating is IP55, the visual guidance distance is not less than 200m, and it is equipped with an RTC clock that can still accurately record the time when the controller is powered off. It can withstand wind loads at speeds of up to 40m / s without significant structural deformation, and all functions operate normally.

[0036] Specifically, it also includes a wireless communication module, which is electrically connected to the controller. The controller is used to send the controller's control signals and the working status of the strobe warning module to an external remote control terminal through the wireless communication module. The controller is also used to receive remote control commands from the external remote control terminal through the wireless communication module.

[0037] In this embodiment, the wireless communication module is a wireless 433Hz communication module, which supports the setting of local area network frequency band and network number. It can realize the isolation between multiple wireless networks and communication does not require additional wiring, saving space and construction costs. Specifically, the 433Hz communication operates in the ISM 433Hz band and adopts the new generation ChirpIoT™ spread spectrum technology, which has high sensitivity, strong anti-interference, and long communication distance.

[0038] Specifically, it also includes a power monitoring and early warning device, which includes a power monitoring sensor and a battery status analysis circuit. The power monitoring sensor and the battery status analysis circuit are electrically connected to the battery, and the controller is electrically connected to the power monitoring sensor and the battery status analysis circuit.

[0039] In this embodiment, the power monitoring sensor uses the Texas Instruments (TI) BQ34Z100-G1, a high-precision fuel gauge chip capable of accurately measuring parameters such as battery voltage, current, and temperature. It communicates with the controller via an I2C interface. The battery is electrically connected to the power monitoring sensor and battery status analysis circuit via wires to ensure signal transmission stability. The power monitoring sensor and battery status analysis circuit are also electrically connected to the controller via I2C interfaces. The controller reads the data transmitted by the power monitoring sensor and battery status analysis circuit to monitor the battery's power and status in real time. When the battery power is detected to be below a preset threshold or the status is abnormal, the controller will promptly issue a warning signal to remind the user to take action, thereby achieving effective monitoring and early warning of the battery. In this embodiment, the power supply method supports optional AC power + battery, solar panel + battery, main AC power, or solar + battery backup. The solar panel is 50W / 12V, and the battery is 17AH / 12V. The charging and discharging management method is an integrated AC-supplementary solar MPPT power supply.

[0040] Specifically, the sensor acquisition device further includes a tilt sensor, a temperature and humidity sensor, a light intensity sensor, and a vibration sensor electrically connected to the input terminal of the controller. The preset control logic circuit further includes a fourth comparison circuit, a fifth comparison circuit, a sixth comparison circuit, and a seventh comparison circuit, respectively electrically connected to the tilt sensor, the temperature and humidity sensor, the light intensity sensor, and the vibration sensor. The output terminals of the fourth comparison circuit, the fifth comparison circuit, the sixth comparison circuit, and the seventh comparison circuit are electrically connected to the input terminal of the frequency control circuit. In this embodiment, the traffic flow sensor is an LVD-3001-3 geomagnetic induction coil, the vehicle speed sensor is a Velodyne VLP-16 lidar sensor, the visibility sensor is a Vaisala FWD20 sensor, the tilt sensor is a dual-axis tilt sensor, the temperature and humidity sensor is an SHT31 temperature and humidity sensor, the light intensity sensor is a photoresistor light intensity sensor, and the vibration sensor is an 801S vibration sensor.

[0041] Specifically, it also includes a tilt monitoring device, which includes a data processing circuit and a tilt alarm threshold circuit. The tilt sensor is electrically connected to the input terminal of the data processing circuit, the output terminal of the data processing circuit is electrically connected to the wireless communication module and the tilt alarm threshold circuit, and the output terminal of the tilt alarm threshold circuit is electrically connected to the controller.

[0042] In this embodiment, the data processing circuit uses an STM32F103C8T6 microcontroller as the core processor. It reads ADC data through the I2C interface and calculates the tilt angle using a built-in algorithm. The output of the data processing circuit is connected to a wireless communication module via an SPI interface to achieve remote data transmission. Simultaneously, the processed digital signal is sent to a tilt alarm threshold circuit composed of an AD8221 instrumentation amplifier. The threshold circuit uses a potentiometer adjustment mode to set an alarm threshold of ±5°. The comparator output is isolated by an optocoupler 6N137 and then connected to the PCINT0 interrupt pin of the ATmega328P controller. The controller drives a buzzer alarm via PWM output and simultaneously controls a relay to cut off the device power. The device power supply uses an LM2596-5.0 to step down a 12V battery to 5V, and a TPS78233 provides a 3.3V regulator. The entire system is protected by a metal casing, and epoxy resin is filled between the sensor and the circuit board for shock absorption.

[0043] Specifically, the strobe warning module includes a strobe warning light group, a dot matrix display unit, and a mode control circuit. The controller sends mode selection commands to the mode control circuit via the SPI bus. The controller also drives the mode control circuit to parse the mode selection commands and generate light group control signals and dot matrix drive commands. Furthermore, the controller controls the start / stop and flashing frequency of the strobe warning light group according to the light group control signals. Finally, the controller displays preset text information on the dot matrix display unit according to the dot matrix drive commands. The strobe warning module also includes a strobe warning drive circuit. The strobe warning light group includes a red-blue strobe light group and a yellow warning light group, which are electrically connected to the mode control circuit via the strobe warning drive circuit. The mode control circuit includes a programmable memory and a multiplexer. The programmable memory stores preset warning mode parameters, and the multiplexer switches the output channel according to the mode selection command.

[0044] In this embodiment, the controller has a built-in SPI peripheral configured in master mode with a clock frequency of 1MHz and a polarity phase setting of CPOL=0 and CPHA=0. The mode control circuit uses a Xilinx XC9572XL CPLD as its core, with a built-in programmable memory using an AT45DB161D flash memory chip with a capacity of 16Mbit. It connects to the CPLD via an SPI interface and stores preset warning mode parameters as shown in Table 1. A multiplexer using an ADG1607 analog switch controls channel switching via the CPLD's I / O pins, enabling independent control of the red-blue strobe light group, the yellow warning light group, and the dot matrix display unit.

[0045] The red and blue strobe LED group uses four OSRAM LW W5AM LEDs with wavelengths of 625nm (red) and 470nm (blue), a forward voltage of 3.2V, and a maximum current of 750mA. The yellow warning LED group uses two CREE XPEYEL LEDs with a wavelength of 590nm, a forward voltage of 2.1V, and a maximum current of 1A. The strobe warning driver circuit uses an LT3757 constant current driver chip, with current feedback achieved through a 0.1Ω sampling resistor for each output, providing a driving capability of 1.5A. The CPLD controls the enable pin of the driver circuit via a PWM signal. The PWM frequency for the red and blue LED group is set to 2Hz with a 50% duty cycle; the PWM frequency for the yellow LED group is set to 1Hz with a 30% duty cycle. The LED group uses a TVS diode SMBJ15CA for overvoltage protection, and the inductor is a TDK VLS6045EX series to ensure current ripple is below 10%. On dangerous road sections or bridges, alternating red and blue lights remind drivers to drive safely and slow down. A constantly lit yellow light reminds drivers to pay attention to the edge of the road and avoid driving off the road. Simultaneously flashing yellow lights remind drivers to pay attention to the edge of the road and control their speed appropriately.

[0046] The dot matrix display unit includes a display panel, which uses a 16×16 dot matrix display with 16*16 red and 16*16 yellow lights. The panel is 32cm*32cm high, with a maximum brightness of 8000 cd / m² for red and yellow single-color lights. The brightness is adjustable in 8 levels, and the flashing frequency for both red and yellow lights is adjustable, offering four modes: constant, 30 flashes / min, 60 flashes / min, and 120 flashes / min. Synchronous flashing between devices is achieved with an error of less than 25cm. Control is achieved through cascaded control using MAX7219 driver chips. The MAX7219 connects to the CPLD via an SPI interface, supporting 16 levels of brightness adjustment. The CPLD reads preset text information from flash memory and converts it into the column scan data format of the MAX7219. In the mode control circuit, channel 0 of the ADG1607 multiplexer is connected to the dot matrix display unit, while channels 1 and 2 are connected to the red / blue and yellow LED drive circuits, respectively. The controller sends a mode selection command (e.g., 0x01 corresponds to red / blue strobe + text display). After parsing, the CPLD switches channels via the multiplexer and generates the corresponding PWM signal and dot matrix scan data. The preset text information includes: depending on the road conditions, displaying words such as "Stop," "Rain," "Snow," "Fog," "Ice," and "Wind" in yellow or red.

[0047] The strobe warning module uses an LM2576-5.0 to step down the 12V input voltage to 5V, with an output current of 3A and an efficiency of 85%. The 5V power supply is regulated to 3.3V by an LP2985-3.3 to power the CPLD and flash memory. The lamp group driver circuit uses a separate LMR16030 synchronous step-down chip, and the output voltage is dynamically adjusted according to the LED forward voltage (3.3V for red and blue LEDs, 2.2V for yellow LEDs). The circuit board adopts a 4-layer PCB design, with LED driver path wiring width ≥2mm and a thermal via density of 5 / 1000. A P6KE20CA TVS diode and a 10A resettable fuse are added to the input terminal. The output terminal is monitored for voltage and current via an LT6703-1. In case of an abnormality, a CPLD interrupt is triggered, shutting down all outputs.

[0048] In this embodiment, one RS232 interface on the controller supports vehicle detection radar expansion, one RS485 interface supports external sensor expansion or northbound communication expansion, and one RJ45 interface supports local configuration, upgrade and other function expansion. The DC 15V interface and the flat cable on the controller are electrically connected to the display panel, the DC 12V interface on the controller is electrically connected to the strobe warning module, the DC 15V interface on the controller is electrically connected to the AC-DC power supply, the SOLRA interface on the controller is electrically connected to the solar panel, the BAT interface on the controller is electrically connected to the battery, and the horn interface on the controller is electrically connected to the speaker.

[0049] Table 1 Preset Alarm Mode Parameter Table

[0050]

[0051] Specifically, it also includes a voice module, which includes a voice control chip, a speaker, and a communication interface. The communication interface is electrically connected to the controller and is used to receive control signals. The voice control chip is electrically connected to the communication interface and is used to process and generate voice data. The speaker is electrically connected to the voice control chip and is used to play voice.

[0052] The voice control chip selected is the SYN6288, which can convert text into natural and fluent speech and process related control commands. The communication interface uses the RS-485 interface chip MAX485, which has strong anti-interference capabilities and is suitable for stable long-distance communication with the controller. The MAX485 is electrically connected to the controller to receive control signals from it. The SYN6288 is also electrically connected to the MAX485, allowing it to acquire and process the signals from the MAX485, generating corresponding voice data. A 4Ω, 3W JQ8400-FL08M speaker is selected, offering clear sound quality and moderate power. The JQ8400-FL08M is electrically connected to the SYN6288. After the SYN6288 generates voice data, the JQ8400-FL08M converts the data into sound and plays it out, thus fully realizing the voice module's functions of receiving control signals, processing, generating, and playing voice.

[0053] The above are merely embodiments of this utility model. This utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are able to access all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims. The specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A solar-powered strobe warning device for highways, characterized in that: The device includes a controller, a sensor acquisition device, a strobe warning module, and a power supply module electrically connected to the controller. The power supply module includes a solar panel, a battery, and an AC power interface. The solar panel is electrically connected to the battery. The battery is connected in parallel with the AC power interface and then electrically connected to the controller. The power supply module is used to supply power to the solar strobe warning device. The sensor acquisition device includes a traffic flow sensor, a vehicle speed sensor, and a visibility sensor. The output terminals of the traffic flow sensor, vehicle speed sensor, and visibility sensor are electrically connected to the input terminal of the controller. The controller includes a preset control logic circuit, which is electrically connected to the traffic flow sensor, vehicle speed sensor, and visibility sensor. The preset control logic circuit includes a first comparison circuit, a second comparison circuit, a third comparison circuit, and a frequency control circuit. The first comparison circuit is electrically connected to the visibility sensor, the second comparison circuit is electrically connected to the traffic flow sensor, and the third comparison circuit is electrically connected to the vehicle speed sensor. The output terminals of the first, second, and third comparison circuits are electrically connected to the input terminal of the frequency control circuit, and the output terminal of the frequency control circuit is electrically connected to the strobe warning module.

2. The solar-powered strobe warning device for highways according to claim 1, characterized in that: It also includes a wireless communication module, which is electrically connected to the controller. The controller is used to send the controller's control signals and the working status of the strobe warning module to an external remote control terminal through the wireless communication module. The controller is also used to receive remote control commands from the external remote control terminal through the wireless communication module.

3. A solar-powered strobe warning device for highways according to claim 2, characterized in that: It also includes a power monitoring and early warning device, which includes a power monitoring sensor and a battery status analysis circuit. The power monitoring sensor and the battery status analysis circuit are electrically connected to the battery, and the controller is electrically connected to the power monitoring sensor and the battery status analysis circuit.

4. A solar-powered strobe warning device for highways according to claim 2, characterized in that: The sensor acquisition device further includes a tilt sensor, a temperature and humidity sensor, a light intensity sensor, and a vibration sensor electrically connected to the input terminal of the controller. The preset control logic circuit further includes a fourth comparison circuit, a fifth comparison circuit, a sixth comparison circuit, and a seventh comparison circuit electrically connected to the tilt sensor, the temperature and humidity sensor, the light intensity sensor, and the vibration sensor, respectively. The output terminals of the fourth comparison circuit, the fifth comparison circuit, the sixth comparison circuit, and the seventh comparison circuit are electrically connected to the input terminal of the frequency control circuit.

5. A solar-powered strobe warning device for highways according to claim 4, characterized in that: It also includes a tilt monitoring device, which includes a data processing circuit and a tilt alarm threshold circuit. The tilt sensor is electrically connected to the input terminal of the data processing circuit, the output terminal of the data processing circuit is electrically connected to the wireless communication module and the tilt alarm threshold circuit, and the output terminal of the tilt alarm threshold circuit is electrically connected to the controller.

6. A solar-powered strobe warning device for highways according to claim 1, characterized in that: The strobe warning module includes a strobe warning light group, a dot matrix display unit, and a mode control circuit. The controller is used to send a mode selection command to the mode control circuit via the SPI bus. The controller is also used to drive the mode control circuit to parse the mode selection command and generate light group control signals and dot matrix drive commands. The controller is also used to control the start / stop and flashing frequency of the strobe warning light group according to the light group control signals. The controller is also used to display preset text information on the dot matrix display unit according to the dot matrix drive commands.

7. A solar-powered strobe warning device for highways according to claim 6, characterized in that: The strobe warning module also includes a strobe warning drive circuit, and the strobe warning light group includes a red and blue strobe light group and a yellow warning light group. The red and blue strobe light group and the yellow warning light group are electrically connected to the mode control circuit through the strobe warning drive circuit.

8. A solar-powered strobe warning device for highways according to claim 6, characterized in that: The mode control circuit includes a programmable memory and a multiplexer. The programmable memory is used to store preset warning mode parameters, and the multiplexer is used to switch the output channel according to the mode selection command.

9. A solar-powered strobe warning device for highways according to claim 1, characterized in that: It also includes a voice module, which includes a voice control chip, a speaker, and a communication interface. The communication interface is electrically connected to the controller and is used to receive control signals. The voice control chip is electrically connected to the communication interface and is used to process and generate voice data. The speaker is electrically connected to the voice control chip and is used to play voice.

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