CN201228890Y - Energy-conserving intelligent all-weather road traffic signpost - Google Patents

Abstract

The utility model provides an intelligent all-weather road traffic sign board, which includes a photosensitive sensor, a brightness adjustment switch of an LED lamp, a single-chip microcomputer, an LED combination lamp, and the photosensitive sensor and a brightness adjustment switch of the LED lamp are respectively connected with corresponding pins of the single-chip computer, and the LED combination The light is connected to the brightness adjustment switch of the LED lamp, and the photosensitive sensor is used to collect the light intensity signal, and periodically transmit the original light intensity signal to the microcontroller, compare it with the base value, calculate the current light intensity level and trigger the brightness of the LED lamp on different pins in a corresponding mode Adjust the switch to output different modulation voltages, control different brightness, and display different logo shapes. The utility model has the following effects and advantages: (1) can effectively avoid and reduce traffic accidents; (2) has certain intelligence and adaptability; (3) has "all-weather"ability; (4) can effectively save electrical energy.

Description

Energy-saving intelligent all-weather road traffic signs

technical field

The utility model relates to an energy-saving intelligent all-weather road traffic sign board.

Background technique

At present, among the domestic road traffic signs, most of the directional signs and guide signs have a blue or green background with white patterns or characters, most of the prohibition signs have a black pattern with a red frame and a white background, and most of the warning signs have a black frame with a yellow background. Black patterns or text standards are made of reflective materials, supports, foundations and fasteners, etc., and are hung on both sides of the road where drivers and pedestrians can easily see them. At night, they need to be illuminated by street lights to facilitate people's identification and guide people. March. The advantage of this type of scheme is that it is easy to make, but the disadvantages are:

(1) It is greatly affected by weather conditions, especially in areas with heavy fog, with low visibility and low recognition;

(2) When the light intensity is weak, such as cloudy days or nights, it is easy to cause drivers or pedestrians to neglect some traffic signs.

(3) When there is heavy fog or light intensity is weak, in order to effectively guide people to move forward, a large number of street lamps are used to provide lighting for roadside traffic signs, which consumes a lot of electric energy. In addition, if the street lamps that provide lighting for traffic signs are damaged or the car is driving in a road area where street lights are not installed, it is difficult for people to observe the traffic signs, which may easily cause traffic accidents and cause loss of life and property.

The embedded system integrates the application software and hardware of the system, and has the characteristics of small software code, high automation, and fast response speed, and is especially suitable for systems that require real-time and multi-tasking. At present, this technology has been applied to almost all electrical equipment in life, such as microwave ovens, digital cameras, home automation systems, elevators, air conditioners and vending machines. Compared with general-purpose computer systems, embedded systems have low power consumption and high reliability; powerful functions and high cost performance; strong real-time performance and support for multi-tasking; small footprint and high efficiency; for specific applications, they can be flexibly customized according to needs.

The increasing maturity of the embedded system provides a good technical basis and application environment for the design of intelligent road traffic signs, and also points out a development direction for the design of new road traffic signs.

Contents of the invention

The technical problem to be solved by the utility model is to develop an intelligent all-weather road traffic signboard with the goal of saving energy and meeting people's daily needs, which can effectively overcome the shortcomings of traditional road traffic signboards.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An energy-saving intelligent all-weather road traffic signboard is characterized in that it includes a photosensitive sensor, an LED lamp brightness adjustment switch, a single-chip microcomputer, and an LED combination lamp. The light is connected to the brightness adjustment switch of the LED lamp. The photosensitive sensor is used to collect the light intensity signal, and regularly transmits the original light intensity signal to the single-chip microcomputer. The single-chip microcomputer is used to convert the light intensity analog signal into a digital signal, and compare it with the preset light intensity base value. Calculate the current light intensity level, and trigger the LED lamp brightness adjustment switch on different pins to output different modulation voltages in the corresponding mode. The LED combination lamp is controlled by the modulation voltage output by the LED lamp brightness adjustment switch to display different brightness, and Different logo shapes are displayed according to different pins that output modulation voltage.

It is also provided with a buzzer, the buzzer is connected to the corresponding pin of the single-chip microcomputer, the single-chip microcomputer triggers the buzzer connected with it, and the buzzer sends out an alarm to indicate whether the single-chip microcomputer is working in an undervoltage state.

The brightness adjustment switch of the LED lamp is provided with a thyristor circuit.

The single-chip microcomputer is a PIC18F4620 single-chip microcomputer, the buzzer is connected to the RD1 pin of the single-chip microcomputer, the photosensitive sensor is connected to the INT0 pin of the single-chip microcomputer, and the brightness adjustment switch of the LED lamp is connected to the RD0 pin of the single-chip microcomputer.

The LED combination lamp can be powered by an AC power grid, a storage battery or a solar cell.

Compared with the prior art, the utility model has the following effects and advantages:

(1) It can effectively avoid and reduce traffic accidents. In order to save electricity, there are fewer street lights in the suburbs or scenic spots of general cities at night, and the road conditions are more complicated. Traffic accidents are prone to occur in rainy days or at night. Using this sign can correctly guide drivers to drive safely, effectively avoiding and reducing traffic accidents. ;

(2) It has certain intelligence and adaptability. According to the signal adopted by the photosensitive sensor, the sign board independently calculates and processes and decides whether to turn on the LED combination light and the brightness when it is turned on, which has a certain degree of intelligence; and can change the corresponding action at any time according to the weather changes, and has a certain degree of self-adaptation Environmental capabilities.

(3) It has "all-weather" capability. Regardless of day or night, as long as the light is dark and the driver's line of sight is poor, the sign can play a role at any time, which means that at the moment when accidents are most likely to occur, under the action of the sign, due to the correct guidance of the driver Drive safely to effectively avoid traffic accidents.

(4) It can effectively save electric energy. Due to the intelligence of the signboard, it can independently decide whether to turn on the LED combination light and the brightness when it is turned on, so that it can effectively save electric energy while playing the role of the signboard.

To sum up, the benefits of using energy-saving intelligent all-weather road traffic signs are mainly manifested in: automatic work, less restricted by various weather conditions, more convenient to guide drivers and pedestrians around the clock, reduce the incidence of traffic accidents, and Reduce energy consumption caused by over-illumination of street lights.

Description of drawings

Fig. 1 is a structural block diagram of the utility model.

Detailed ways

Fig. 1 is the structural block diagram of the present utility model, and the present utility model constructs a kind of energy-saving intelligent all-weather road traffic signboard, and it comprises photosensitive sensor, LED lamp brightness adjustment switch, single-chip microcomputer, LED combination lamp, photosensitive sensor, LED lamp brightness adjustment switch Connect to the corresponding pins of the single-chip microcomputer respectively, the LED combination lamp is connected to the brightness adjustment switch of the LED lamp, the photosensitive sensor is used to collect the light intensity signal, and regularly transmits the original light intensity signal to the single-chip microcomputer, and the single-chip microcomputer is used to convert the light intensity analog signal into a digital signal , compared with the preset light intensity base value, calculate the current light intensity level, and trigger the LED lamp brightness adjustment switch on different pins to output different modulation voltages in the corresponding mode, and the LED combination lamp is output by the LED lamp brightness adjustment switch Different modulation voltages can be used to control the different brightness of the display, and different logo shapes can be displayed according to different pins that output the modulation voltage. It also has a buzzer, the buzzer is connected with the corresponding pin of the single-chip microcomputer, the single-chip microcomputer triggers the buzzer connected with it, and the buzzer sends out an alarm to indicate whether the single-chip microcomputer is working in an undervoltage state. The sign board uses the information collected by the photosensitive sensor, and can independently decide whether to turn on the LED combination light through the calculation and processing of the single-chip computer. When it is turned on, it uses the measured value of the photosensitive sensor and the brightness adjustment switch of the LED lamp to automatically adjust to the appropriate brightness, and the sign board can be modified according to actual needs. Display content, set multiple display modes. For example: when the road speed limit signboard is in good weather and the light is good, the LED combination light can be turned off, and the traditional road speed limit signboard can be used to remind the driver; in rainy days or nights, it can be automatically turned on and adjusted appropriately The brightness of the LED combined light, moderately lower the road speed limit value.

Take the PIC18F4620 single-chip microcomputer as an example, the buzzer can be connected to the RD1 pin of the single-chip microcomputer, the photosensitive sensor can be connected to the INT0 pin of the single-chip microcomputer, and the brightness adjustment switch of the LED lamp can be connected to the RD0 pin of the single-chip microcomputer. In addition, the brightness adjustment switch of the LED lamp is actually a thyristor control circuit, which is responsible for outputting the required modulation voltage, and then triggers the LED combination light to turn on at different brightness levels, meeting the needs of the LED combination light to turn on at different brightness levels.

The LED combination lamp and the control circuit of the LED combination lamp can be powered by an AC power grid, a storage battery or a solar cell.

The microcontroller can be powered by a DC power supply or an AC grid.

It adopts the sleep and wake-up working mode, enters the working state after waking up, and enters the energy-saving state when sleeping, and does not perform energy-consuming tasks such as calculations. When the single-chip microcomputer is powered by a battery, after the single-chip microcomputer wakes up, it first judges whether it is in an undervoltage working state. If the judgment result is true, the buzzer is triggered to send an undervoltage warning signal. If the judgment result is false, the system enters the normal working stage.

After the system enters the normal working state, the current light intensity signal is first collected by the photosensitive sensor, and then the single-chip microcomputer converts the light analog signal into a numerical signal, and compares it with the preset light intensity base value to determine the current light intensity level and its value. Changes.

If the current light intensity level does not change, the single chip microcomputer enters the sleep mode. If the current light intensity level changes, the LED lamp brightness adjustment switch should be triggered according to the changed light intensity level and in a corresponding mode, and finally by The modulation voltage output by the brightness adjustment switch of the LED lamp is used to start the LED combination light, and drive the LED combination light to display different sign shapes, so that the LED combination light can have multiple brightness levels and sign shapes.

Two ways are used to drive the LED combination light to display different sign shapes. One is that the LED combination light displays several fixed signs, which are controlled by different single-chip microcomputer pins, so that the signal output by each single-chip microcomputer pin corresponds to the signal on the LED combination light. One kind of logo shape; the other is the dynamic display of characters by LED combination lights. The single-chip microcomputer obtains the character codes of the characters to be displayed by searching the character code table stored in the storage device, and then sends them to the LED combination lights through the corresponding pins, and then displays the corresponding characters. The character of the LED combination lamp at this time is realized by a dot matrix circuit.

There are two ways to adjust the output modulation voltage of the LED lamp brightness adjustment switch, one is the AC zero-crossing detection technology, which is realized by changing the high and low level ratio of each cycle of the AC power, and the other is the PWM technology, which uses the built-in microcontroller The PWM module is realized by adjusting the duty cycle of the active level.

Claims (5)

1. An energy-saving intelligent all-weather road traffic signboard is characterized in that it includes a photosensitive sensor, an LED lamp brightness adjustment switch, a single-chip microcomputer, an LED combination lamp, and the photosensitive sensor and the LED lamp brightness adjustment switch are respectively connected with corresponding pins of the single-chip microcomputer, The LED combination lamp is connected with the brightness adjustment switch of the LED lamp, and the photosensitive sensor is used to collect the light intensity signal, and regularly transmits the original light intensity signal to the single-chip microcomputer, and the single-chip microcomputer is used to convert the light intensity analog signal into a digital signal, and the preset light intensity base value Compare and calculate the current light intensity level, and trigger the LED lamp brightness adjustment switch on different pins to output different modulation voltages in the corresponding mode. The LED combination lamp is controlled by the modulation voltage output by the LED lamp brightness adjustment switch to display different brightness. , and display different logo shapes according to different pins that output modulation voltage. 2. The energy-saving intelligent all-weather road traffic signboard according to claim 1, characterized in that: it is also provided with a buzzer, the buzzer is connected to the corresponding pin of the single-chip microcomputer, and the single-chip microcomputer triggers the buzzer connected to it. The buzzer sends out an alarm to indicate whether the microcontroller is working in an undervoltage state. 3. The energy-saving intelligent all-weather road traffic signboard according to claim 1 or 2, characterized in that: said LED lamp brightness adjustment switch is provided with a thyristor circuit. 4. The energy-saving intelligent all-weather road traffic signboard according to claim 1 or 2, characterized in that: the single-chip microcomputer is a PIC18F4620 single-chip microcomputer, the buzzer is connected to the RD1 pin of the single-chip microcomputer, and the photosensitive sensor is connected to the INT0 of the single-chip microcomputer. pin, the brightness adjustment switch of the LED lamp is connected to the RD0 pin of the microcontroller. 5. The energy-saving intelligent all-weather road traffic signboard according to claim 1 or 2, characterized in that: said LED combination lamp can be powered by AC power grid, storage battery or solar battery.

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