技术领域technical field
本发明涉及交通信号灯领域，尤其涉及一种LED交通信号灯控制方法。The invention relates to the field of traffic signal lamps, in particular to a method for controlling LED traffic signal lamps.
背景技术Background technique
近年来，LED凭借着自己的优势，在照明电路中的应用越来越广泛。同时，随着LED在照明领域的不断突破，LED光源成为了半导体照明行业的热点，而且LED的成本也在逐渐降低，LED光源也被广泛应用到道路交通中。In recent years, LEDs have become more and more widely used in lighting circuits by virtue of their own advantages. At the same time, with the continuous breakthrough of LED in the lighting field, LED light source has become a hot spot in the semiconductor lighting industry, and the cost of LED is gradually decreasing, and LED light source is also widely used in road traffic.
在交通信号灯方面，关于LED光源的开发已经在如火如荼的进行。国内外有很多示范工程，并且取得了很好的效果。现在LED光源在减少经费支出，降低光污染方法具有很大的优势，同时具有色温好，杂散光少等特点。In terms of traffic lights, the development of LED light sources has been in full swing. There are many demonstration projects at home and abroad, and have achieved good results. Now LED light sources have great advantages in reducing expenditures and reducing light pollution. At the same time, they have the characteristics of good color temperature and less stray light.
交通信号灯采用LED的几点优势：LED交通信号灯与传统的交通信号灯的比较LED，即为发光二极管，属于固态的半导体器件，能够直接把电能转化为光能，应用十分广泛；他能够定向发射光线，适合应用于某个方向的光线照明，同时因为发光面小，可以进行光线控制，提高光线利用率；刚开始的时候，LED作为仪器仪表的指示光源被使用，后来逐渐应用到交通信号灯以及大面积的显示屏中，带来了巨大的经济效益和社会效益；传统的交通信号灯是由电源、反光碗和灯壳以及有色配光镜等部分组成，而对于LED信号来说，本身可以发出色光，不需要再配置有色配光镜。Several advantages of using LED for traffic lights: LED traffic lights are compared with traditional traffic lights. , suitable for light illumination in a certain direction, and because of the small light-emitting surface, light control can be performed to improve light utilization; at the beginning, LED was used as an indicator light source for instruments and meters, and later it was gradually applied to traffic lights and big lights. The large-scale display screen has brought huge economic and social benefits; traditional traffic lights are composed of power supply, reflective bowl and lamp housing, and colored light distribution mirrors. For LED signals, they can emit colored light. , no need to configure colored light distribution mirrors.
当前，在LED交通信号灯的实际使用中，仍暴露了一些问题需要解决。例如，缺乏黄灯显示期间的预警信息提供机制，预警信息包括黄灯显示剩余时间以及剩余时间内尚能通行车辆的数量，容易导致车辆驾驶员发生误判，将闯黄灯变为闯红灯，又如，无法进行无线充电，另外，现有的LED交通信号灯的结构仍需要优化，功能仍需要进一步地丰富。At present, in the actual use of LED traffic lights, there are still some problems that need to be solved. For example, there is no mechanism for providing early warning information during the yellow light display period. The early warning information includes the remaining time of the yellow light display and the number of vehicles that can still pass within the remaining time, which may easily lead to misjudgment by vehicle drivers, turning yellow light into red light, and For example, wireless charging cannot be performed. In addition, the structure of the existing LED traffic lights still needs to be optimized, and the functions still need to be further enriched.
因此，需要一种新的LED交通信号灯控制方案，优化了现有LED交通信号灯的控制模式，增加了黄灯显示期间的预警信息提供机制和无线充电机制，从而完善了LED交通信号灯的功能。Therefore, a new LED traffic light control scheme is needed, which optimizes the control mode of the existing LED traffic light, and adds an early warning information provision mechanism and a wireless charging mechanism during the yellow light display, thereby improving the function of the LED traffic light.
发明内容Contents of the invention
为了解决上述问题，本发明提供了一种LED交通信号灯控制系统，改造现有技术中的信号灯控制模式，提供了黄灯显示倒计时机制和黄灯显示剩余时间能够通行车辆数量的确定机制，为车辆驾驶员提供足够多的预警信息，有效避免闯红灯的违章行为发生，同时建立无线充电机制，为LED交通信号灯的供电提供有力保障，更为关键的是，丰富了现有LED交通信号灯的设备。In order to solve the above problems, the present invention provides a LED traffic light control system, transforming the signal light control mode in the prior art, providing a yellow light display countdown mechanism and a determination mechanism for the number of vehicles that can pass in the remaining time of the yellow light display. The driver provides enough early warning information to effectively avoid violations of running red lights. At the same time, a wireless charging mechanism is established to provide a strong guarantee for the power supply of LED traffic lights. More importantly, it enriches the equipment of existing LED traffic lights.
根据本发明的一方面，提供了一种LED交通信号灯控制系统，所述控制系统位于当前交通路口，包括自动充电设备和LED三色灯设备，自动充电设备用于在电量不足时，自动接收外界的充电电力，以保障LED三色灯设备的电力供应，LED三色灯设备用于交替显示红黄绿三色。According to one aspect of the present invention, a control system for LED traffic lights is provided. The control system is located at the current traffic intersection and includes an automatic charging device and an LED three-color lamp device. The automatic charging device is used to automatically receive external signals when the battery is insufficient The charging power to ensure the power supply of the LED tri-color light device, which is used to alternately display the three colors of red, yellow and green.
更具体地，在所述LED交通信号灯控制系统中，包括：能量检测设备，用于分别与电源供应设备的市电接入接口和远端中央控制设备连接，包括能量消耗检测单元和第一RS485通信单元，能量消耗检测单元与市电接入接口连接，用于在电源供应设备进行电力供应时，确定所述控制系统所消耗的能量，第一RS485通信单元与能量消耗检测单元连接，用于将所述控制系统所消耗的能量发送给远端中央控制设备；电力检测设备，与电源供应设备的电压转换电路连接，用于检测电压转换电路提供的电压是否符合预设电压，当电压转换电路提供的电压低于预设电压时，发出电量不足信号；定位设备，用于在接收到定位启动信号时，自动寻找附近的LED交通信号灯；自动通信设备，与定位设备连接，用于在寻找到附近的LED交通信号灯后，向其发送握手信号以建立与其之间的通信链路，并在完成与附近的LED交通信号灯的通信链路建立操作后，发出链路建立完成信号；自动充电设备，用于在接收到链路建立完成信号时，接收附近的LED交通信号灯对其的无线充电，并在充电完成后替换电源供应设备以进行电力供应；RS485串行通信设备，用于实现MSP430单片机与远端中央控制设备之间的RS485通信；MSP430单片机，分别与电力检测设备、定位设备、自动通信设备、自动充电设备和RS485串行通信设备连接，用于在接收到电量不足信号后，启动定位设备、自动通信设备和自动充电设备，将电量不足信号通过RS485串行通信设备发送给远端中央控制设备，并将定位启动信号发送给定位设备，还用于在接收到链路建立完成信号后，通过RS485串行通信设备向远端中央控制设备发送无线充电启动信号，以启动定位设备寻找到的附近的LED交通信号灯的无线充电操作；车辆通行时间检测设备，用于检测并输出车辆通过当前交通路口所需的平均时间，包括：计时单元，用于提供并输出计时信号；超声波发送单元，位于当前交通路口的正上方，用于向当前交通路口地面发射超声波信号；超声波接收单元，与超声波发送单元一起位于当前交通路口的正上方，用于接收反射的超声波信号；检测控制单元，分别与计时单元、目标识别单元、超声波发送单元和超声波接收单元连接，用于基于发射超声波信号和接收反射的超声波信号之间的时间间隔是否发生变化，确定是否发出目标存在信号，还用于基于每一辆通过当前交通路口的车辆的通行时间确定车辆通过当前交通路口所需的平均时间；目标识别单元，位于当前交通路口的正上方并位于超声波发送单元之后，距离超声波发送单元的径向长度为10毫米，分别与检测控制单元和计时单元连接，用于在接收到目标存在信号后，基于图像识别方式确定通过当前交通路口的目标是否为车辆，以将车辆目标信号或非车辆目标信号发送给检测控制单元，同时计算车辆车头经过当前交通路口预设基线和车辆车尾经过当前交通路口预设基线之间的时间间隔，以作为车辆的通行时间发送给检测控制单元，其中，当前交通路口预设基线在当前交通路口地面上，径向位置在目标识别单元之后，距离目标识别单元的径向长度为30毫米；剩余通行车辆数量指示设备，用于与车辆通行时间检测设备连接以接收车辆通过当前交通路口所需的平均时间，与黄灯倒计时指示设备连接以接收其输出的倒计时时间，并基于车辆通过当前交通路口所需的平均时间和倒计时时间确定黄LED主灯或黄LED辅灯在关闭前还能够通行的车辆数量以作为剩余通行车辆数量显示和输出；LED三色灯设备，包括红LED主灯、黄LED主灯、绿LED主灯、红LED辅灯、黄LED辅灯和绿LED辅灯，红LED辅灯、黄LED辅灯和绿LED辅灯分别作为红LED主灯、黄LED主灯和绿LED主灯的替换灯，以在相应主灯发生故障时替换相应主灯进行显示或关闭操作；黄灯倒计时指示设备，用于在LED三色灯设备中的黄LED主灯或黄LED辅灯显示时，触发对黄LED主灯或黄LED辅灯的显示倒计时操作，并显示对应的倒计时时间；行人通行指示灯设备，包括行人通行允许灯、行人通行切换灯和行人通行禁止灯，行人通行切换灯显示在行人通行允许灯显示前并在行人通行禁止灯关闭后；信号灯控制设备，分别与LED三色灯设备、黄灯倒计时指示设备和行人通行指示灯设备连接，用于同时控制LED三色灯设备、黄灯倒计时指示设备和行人通行指示灯设备的显示操作；LCD显示设备，包括LCD显示屏、显示屏驱动单元和RS232串行通信单元，LCD显示屏集成有触摸屏，显示屏驱动单元与LCD显示屏连接，用于驱动LCD显示屏以实现显示操作或接收触摸屏输入操作，串行通信单元分别与显示屏驱动单元和MSP430单片机连接，用于接收显示内容或发送触摸片输入内容；车流量检测设备，包括有源环形车辆检测单元和第二RS485通信单元，有源环形车辆检测单元用于对通行于当前交通路口的车辆的车速、车长、车距和车辆密度进行检测，第二RS485通信单元分别与有源环形车辆检测单元和远端中央控制设备连接，用于将通行于当前交通路口的车辆的车速、车距和车辆密度发送给远端中央控制设备；电源供应设备，包括市电接入接口、变压整流电路、滤波稳压电路和电压转换电路，市电接入接口用于接收市电电力供应，变压整流电路与市电接入接口连接，用于对接收的市电电力信号依次进行变压操作和整流操作，以获得整流电力信号，滤波稳压电路与变压整流电路连接，用于对整流电力信号依次进行滤波操作和稳压操作，以获得稳压电力信号，电压转换电路与滤波稳压电路连接，用于对稳压电力信号进行电压转换操作，以获得12V、5V或3.3V电压信号；其中，红LED主灯、黄LED主灯、绿LED主灯、红LED辅灯、黄LED辅灯和绿LED辅灯中每一个LED灯都包括负极引脚、正极引脚、反射帽、LED芯片和环氧树脂透镜，LED芯片分别与负极引脚和正极引脚连接，反射帽设置在LED芯片的下方，环氧树脂透镜为圆形，设置在LED芯片上方并包裹LED芯片，用于保护LED芯片并对LED芯片发出的光线进行聚光。More specifically, in the LED traffic signal light control system, it includes: an energy detection device, which is used to connect with the mains access interface of the power supply device and the remote central control device respectively, including an energy consumption detection unit and a first RS485 The communication unit, the energy consumption detection unit is connected to the mains access interface, and is used to determine the energy consumed by the control system when the power supply equipment is supplying power, and the first RS485 communication unit is connected to the energy consumption detection unit, for Send the energy consumed by the control system to the remote central control device; the power detection device is connected to the voltage conversion circuit of the power supply device, and is used to detect whether the voltage provided by the voltage conversion circuit meets the preset voltage. When the voltage conversion circuit When the voltage provided is lower than the preset voltage, an insufficient battery signal is sent; the positioning device is used to automatically find nearby LED traffic lights when receiving a positioning start signal; the automatic communication device is connected to the positioning device to find After the nearby LED traffic lights, send a handshake signal to it to establish a communication link with it, and after completing the communication link establishment operation with the nearby LED traffic lights, send a link establishment completion signal; automatic charging equipment, It is used to receive the wireless charging of the nearby LED traffic lights when receiving the link establishment completion signal, and replace the power supply equipment for power supply after the charging is completed; RS485 serial communication equipment is used to realize MSP430 microcontroller and RS485 communication between remote central control devices; MSP430 single-chip microcomputer, respectively connected with power detection equipment, positioning equipment, automatic communication equipment, automatic charging equipment and RS485 serial communication equipment, used to start positioning after receiving a signal of insufficient power Equipment, automatic communication equipment and automatic charging equipment, send the low-power signal to the remote central control equipment through the RS485 serial communication equipment, and send the positioning start signal to the positioning equipment, and are also used to , send a wireless charging start signal to the remote central control device through the RS485 serial communication device to start the wireless charging operation of the nearby LED traffic lights found by the positioning device; the vehicle passing time detection device is used to detect and output the vehicle passing current The average time required for traffic intersections, including: timing unit, used to provide and output timing signals; ultrasonic sending unit, located directly above the current traffic intersection, used to transmit ultrasonic signals to the ground of the current traffic intersection; ultrasonic receiving unit, connected with ultrasonic The sending unit is located directly above the current traffic intersection for receiving reflected ultrasonic signals; the detection control unit is connected with the timing unit, target recognition unit, ultrasonic sending unit and ultrasonic receiving unit respectively for transmitting ultrasonic signals and receiving reflected Whether the time interval between the ultrasonic signals changes, to determine whether to send a target presence signal, and also to determine the average time required for vehicles to pass through the current traffic intersection based on the passing time of each vehicle passing through the current traffic intersection; the target recognition unit ,lie in Directly above the current traffic intersection and behind the ultrasonic sending unit, the radial length from the ultrasonic sending unit is 10mm, connected to the detection control unit and the timing unit respectively, and used to determine based on the image recognition method after receiving the target presence signal Whether the target at the current traffic intersection is a vehicle, so as to send the vehicle target signal or non-vehicle target signal to the detection control unit, and at the same time calculate the distance between the front of the vehicle passing the preset baseline of the current traffic intersection and the rear of the vehicle passing the preset baseline of the current traffic intersection The time interval is sent to the detection control unit as the passing time of the vehicle, wherein the preset baseline of the current traffic intersection is on the ground of the current traffic intersection, the radial position is behind the target recognition unit, and the radial length from the target recognition unit is 30 mm; the number of remaining vehicles indicating equipment, used to connect with the vehicle passing time detection equipment to receive the average time required for vehicles to pass through the current traffic intersection, and to connect with the yellow light countdown indicating device to receive the countdown time output by it, and based on the vehicle passing The average time and countdown time required by the current traffic intersection determine the number of vehicles that can pass through the yellow LED main light or the yellow LED auxiliary light before it is turned off as the number of remaining vehicles to display and output; LED tricolor light equipment, including red LED main lights lamp, yellow LED main light, green LED main light, red LED auxiliary light, yellow LED auxiliary light and green LED auxiliary light, red LED auxiliary light, yellow LED auxiliary light and green LED auxiliary light are respectively used as red LED main light, yellow LED The main light and the replacement light of the green LED main light are used to replace the corresponding main light for display or shutdown operation when the corresponding main light fails; the yellow light countdown indicator device is used for the yellow LED main light in the LED three-color light device or When the yellow LED auxiliary light is displayed, trigger the display countdown operation of the yellow LED main light or the yellow LED auxiliary light, and display the corresponding countdown time; Pedestrian traffic light equipment, including pedestrian traffic permission light, pedestrian traffic switching light and pedestrian traffic prohibition Pedestrian traffic switching light is displayed before the pedestrian traffic permission light is displayed and after the pedestrian traffic prohibition light is turned off; the signal light control device is connected with the LED three-color light device, the yellow light countdown indicator device and the pedestrian traffic indicator device respectively. Simultaneously control the display operation of LED three-color light equipment, yellow light countdown indicator equipment and pedestrian traffic indicator equipment; LCD display equipment, including LCD display, display driver unit and RS232 serial communication unit, LCD display integrated with touch screen, The display driver unit is connected with the LCD display, used to drive the LCD display to realize display operation or receive touch screen input operation, and the serial communication unit is respectively connected with the display driver unit and MSP430 single-chip microcomputer for receiving display content or sending touch screen Input content; traffic flow detection equipment, including an active circular vehicle detection unit and a second RS485 communication unit, the active circular vehicle detection unit is used to conduct vehicle speed, vehicle length, vehicle distance and vehicle density of vehicles passing through the current traffic intersection detection, the second RS485 communication unit is connected with the active ring vehicle detection unit and the remote middle Central control equipment connection, used to send the speed, distance and vehicle density of vehicles passing through the current traffic intersection to the remote central control equipment; power supply equipment, including mains power access interface, transformer rectification circuit, filter voltage stabilization circuit and voltage conversion circuit, the mains access interface is used to receive the mains power supply, and the transformation and rectification circuit is connected to the mains access interface, and is used to sequentially perform voltage transformation and rectification operations on the received mains power signal, so as to To obtain the rectified power signal, the filter voltage stabilization circuit is connected to the transformer rectification circuit, and is used to sequentially perform filtering operation and voltage stabilization operation on the rectified power signal to obtain a voltage stabilized power signal, and the voltage conversion circuit is connected to the filter voltage stabilization circuit for Perform voltage conversion operation on the regulated power signal to obtain 12V, 5V or 3.3V voltage signal; among them, red LED main light, yellow LED main light, green LED main light, red LED auxiliary light, yellow LED auxiliary light and green LED Each LED lamp in the auxiliary lamp includes a negative pin, a positive pin, a reflective cap, an LED chip and an epoxy resin lens. The LED chip is connected to the negative pin and the positive pin respectively, and the reflective cap is arranged under the LED chip. The epoxy resin lens is circular, arranged above the LED chip and wrapping the LED chip, for protecting the LED chip and concentrating the light emitted by the LED chip.
更具体地，在所述LED交通信号灯控制系统中：定位设备包括测距单元和GPS单元。More specifically, in the LED traffic signal light control system: the positioning device includes a distance measuring unit and a GPS unit.
更具体地，在所述LED交通信号灯控制系统中：替换地，检测控制单元的全部操作由MSP430单片机实现。More specifically, in the LED traffic signal light control system: alternatively, all operations of the detection control unit are realized by MSP430 single-chip microcomputer.
更具体地，在所述LED交通信号灯控制系统中：黄灯倒计时指示设备和剩余通行车辆数量指示设备被集成在一块集成电路板上。More specifically, in the LED traffic signal light control system: the yellow light countdown indicator device and the remaining vehicle number indicator device are integrated on one integrated circuit board.
更具体地，在所述LED交通信号灯控制系统中：车辆通行时间检测设备被设置在当前交通路口上方的横杆中央位置，LCD显示设备被设置在当前交通路口附近的控制柜内。More specifically, in the LED traffic light control system: the vehicle passing time detection device is set at the center of the crossbar above the current traffic intersection, and the LCD display device is set in the control cabinet near the current traffic intersection.
附图说明Description of drawings
以下将结合附图对本发明的实施方案进行描述，其中：Embodiments of the present invention will be described below in conjunction with the accompanying drawings, wherein:
图1为根据本发明实施方案示出的LED交通信号灯控制系统的结构方框图。Fig. 1 is a structural block diagram of an LED traffic signal light control system according to an embodiment of the present invention.
附图标记：1自动充电设备；2LED三色灯设备Reference signs: 1 automatic charging device; 2 LED tricolor lamp device
具体实施方式detailed description
下面将参照附图对本发明的LED交通信号灯控制系统的实施方案进行详细说明。The implementation of the LED traffic signal lamp control system of the present invention will be described in detail below with reference to the accompanying drawings.
LED自从1968年问世以来,就凭借其较小的体积小、极快的反应速度、非常低的起动电压、高度的耐震性和避免了汞污染等良好的特性，在很多要求轻、薄以及小型设备中得到了广泛的应用。又由于其发光效率高，而且拥有红、黄、绿等良好的显色性能，不但被大量应用于需要色彩装饰的生活环境中，特别是在公路、铁路、城市道路的交通信号系统中更是大显身手。Since the LED came out in 1968, it has been used in many applications that require light, thin and small equipment has been widely used. Because of its high luminous efficiency and good color rendering performance of red, yellow, green, etc., it is not only widely used in living environments that require color decoration, especially in traffic signal systems of roads, railways, and urban roads. Show your skills.
LED信号灯具有以下特性：LED signal lights have the following characteristics:
1)可靠性好，寿命长，对于信号灯来说，一般使用环境比较恶劣,需要适应不同的温度以及风吹、日晒、雨淋等不同的自然条件，所以，要求信号灯在可靠性和寿命方面具有较高的要求，一般说来，如果使用白炽灯泡作为信号灯，其平均寿命大约为1000h，如果使用低压卤钨作为主要材料的灯泡，其平均寿命大约为2000h，而且这些信号灯在维护时的费用一般很高，而LED信号灯在这个方面的优势则要突出得多，已经有实践证明，很多LED信号灯的寿命已经大大超过了5年，却没有损坏，另外，LED信号灯还有一个非常突出的优点就是回应时间快，从而能够大大减少在应用中发性交事故的概率，这些都是白炽灯或卤钨灯泡难以实现的；1) Good reliability and long life. For signal lights, the general use environment is relatively harsh, and it needs to adapt to different temperatures and different natural conditions such as wind, sun, rain, etc. Therefore, signal lights are required to be reliable and long-lasting. Generally speaking, if an incandescent bulb is used as a signal light, its average lifespan is about 1000h, and if a low-voltage halogen tungsten bulb is used as the main material, its average lifespan is about 2000h, and the maintenance cost of these signal lights Generally very high, but the advantages of LED signal lights in this respect are much more prominent. It has been proved that many LED signal lights have a life span of more than 5 years without damage. In addition, LED signal lights have a very prominent advantage It is the fast response time, which can greatly reduce the probability of sexual intercourse accidents in the application, which are difficult to achieve with incandescent or tungsten halogen bulbs;
2)具有单色光和发散角的特性，因为LED所散出来的本身就是单色光，所以，在使用中不需要用色片作用去重新生成红、黄、绿等不同颜色，另外，由于LED所散发出来的光是呈现一定的方向性的，具有特定的发散角，所以，在应用中就避免了以往采用非球面的反光镜的做法，因为这一特点，使得LED很好地解决了以往信号灯中容易产生幻像的弊端，同时还避免了因色片而带来的褪色现象，大大完善了使用效果；2) It has the characteristics of monochromatic light and divergence angle. Because the light emitted by the LED itself is monochromatic light, it is not necessary to use color chips to regenerate different colors such as red, yellow, and green. In addition, because The light emitted by the LED is directional and has a specific divergence angle. Therefore, in the application, the previous practice of using aspheric reflectors is avoided. Because of this feature, the LED solves the problem of In the past, the disadvantages of phantoms that were easy to occur in signal lights, and at the same time, it also avoided the fading phenomenon caused by the color film, which greatly improved the use effect;
3)LED具备冷光源、能耗低的优势，作为一种重要的冷光源，LED具备能耗很低的特点，使得这种信号灯实现了节能的目的。由此可见，LED信号灯正凭借其较高的亮度和可靠性以及能耗低的优势，逐渐得到世界各个城市的广泛使用。3) LED has the advantages of cold light source and low energy consumption. As an important cold light source, LED has the characteristics of low energy consumption, which makes this signal light realize the purpose of energy saving. It can be seen that LED signal lights are gradually being widely used in cities all over the world by virtue of their advantages of high brightness, reliability and low energy consumption.
然而现有的LED交通信号灯还存在以下弊端：首先，缺乏黄灯显示倒计时机制和黄灯显示剩余时间能够通行车辆数量的确定机制，无法为车辆驾驶员提供足够多的信息实现预警功能，从而导致车辆驾驶员在做出闯黄灯决定后，事实上发生了闯红灯的违章行为；其次，缺乏无线充电技术，无法为LED交通信号灯的供电提供有力保障；最后，现有的LED交通信号灯结构过于简单，需要增加一些辅助设备以提高其智能化水平。However, the existing LED traffic lights also have the following disadvantages: First, the lack of a yellow light display countdown mechanism and a yellow light display remaining time determination mechanism for the number of vehicles that can pass through, cannot provide enough information for the vehicle driver to realize the early warning function, resulting in After the driver of the vehicle made the decision to run the yellow light, the violation of the red light actually occurred; secondly, the lack of wireless charging technology cannot provide a strong guarantee for the power supply of the LED traffic light; finally, the existing LED traffic light structure is too simple , Need to add some auxiliary equipment to improve its intelligence level.
为了克服上述不足，本发明搭建了一种LED交通信号灯控制系统，能够同时解决上述弊端，从而为需要的交通信号灯的车辆和行人提供更多的辅助信息，增强交通信号灯的可靠性和智能化水准，使其更好地服务于城市建设。In order to overcome the above shortcomings, the present invention builds a LED traffic signal light control system, which can solve the above disadvantages at the same time, thereby providing more auxiliary information for vehicles and pedestrians who need traffic signal lights, and enhancing the reliability and intelligence level of traffic signal lights , so that it can better serve urban construction.
图1为根据本发明实施方案示出的LED交通信号灯控制系统的结构方框图，所述控制系统位于当前交通路口，包括自动充电设备和LED三色灯设备，自动充电设备用于在电量不足时，自动接收外界的充电电力，以保障LED三色灯设备的电力供应，LED三色灯设备用于交替显示红黄绿三色。Fig. 1 is the structural block diagram of the LED traffic signal lamp control system shown according to the embodiment of the present invention, and described control system is positioned at current traffic crossing, comprises automatic charging equipment and LED three-color lamp equipment, and automatic charging equipment is used for when electric quantity is insufficient, Automatically receive external charging power to ensure the power supply of LED tri-color light equipment, which is used to alternately display red, yellow and green.
接着，继续对本发明的LED交通信号灯控制系统的具体结构进行进一步的说明。Next, the specific structure of the LED traffic signal light control system of the present invention will be further described.
所述控制系统包括：能量检测设备，用于分别与电源供应设备的市电接入接口和远端中央控制设备连接，包括能量消耗检测单元和第一RS485通信单元，能量消耗检测单元与市电接入接口连接，用于在电源供应设备进行电力供应时，确定所述控制系统所消耗的能量，第一RS485通信单元与能量消耗检测单元连接，用于将所述控制系统所消耗的能量发送给远端中央控制设备。The control system includes: energy detection equipment, which is used to connect with the mains access interface of the power supply equipment and the remote central control equipment respectively, including an energy consumption detection unit and a first RS485 communication unit, and the energy consumption detection unit is connected with the mains The access interface is used to determine the energy consumed by the control system when the power supply equipment is supplying power, and the first RS485 communication unit is connected to the energy consumption detection unit for sending the energy consumed by the control system to To remote central control equipment.
所述控制系统包括：电力检测设备，与电源供应设备的电压转换电路连接，用于检测电压转换电路提供的电压是否符合预设电压，当电压转换电路提供的电压低于预设电压时，发出电量不足信号；定位设备，用于在接收到定位启动信号时，自动寻找附近的LED交通信号灯；自动通信设备，与定位设备连接，用于在寻找到附近的LED交通信号灯后，向其发送握手信号以建立与其之间的通信链路，并在完成与附近的LED交通信号灯的通信链路建立操作后，发出链路建立完成信号。The control system includes: power detection equipment, connected to the voltage conversion circuit of the power supply equipment, used to detect whether the voltage provided by the voltage conversion circuit meets the preset voltage, and when the voltage provided by the voltage conversion circuit is lower than the preset voltage, send Insufficient battery signal; positioning device, used to automatically find nearby LED traffic lights when receiving a positioning start signal; automatic communication device, connected to the positioning device, used to send a handshake to the nearby LED traffic lights after finding them Signal to establish a communication link with it, and after completing the communication link establishment operation with the nearby LED traffic lights, send a link establishment complete signal.
所述控制系统包括：自动充电设备，用于在接收到链路建立完成信号时，接收附近的LED交通信号灯对其的无线充电，并在充电完成后替换电源供应设备以进行电力供应；RS485串行通信设备，用于实现MSP430单片机与远端中央控制设备之间的RS485通信；MSP430单片机，分别与电力检测设备、定位设备、自动通信设备、自动充电设备和RS485串行通信设备连接，用于在接收到电量不足信号后，启动定位设备、自动通信设备和自动充电设备，将电量不足信号通过RS485串行通信设备发送给远端中央控制设备，并将定位启动信号发送给定位设备，还用于在接收到链路建立完成信号后，通过RS485串行通信设备向远端中央控制设备发送无线充电启动信号，以启动定位设备寻找到的附近的LED交通信号灯的无线充电操作。The control system includes: automatic charging equipment, used to receive wireless charging from nearby LED traffic lights when receiving a link establishment completion signal, and replace the power supply equipment for power supply after the charging is completed; RS485 serial Line communication equipment, used to realize the RS485 communication between the MSP430 single-chip microcomputer and the remote central control equipment; After receiving the low power signal, start the positioning device, automatic communication device and automatic charging device, send the low power signal to the remote central control device through the RS485 serial communication device, and send the positioning start signal to the positioning device. After receiving the link establishment completion signal, send a wireless charging start signal to the remote central control device through the RS485 serial communication device to start the wireless charging operation of the nearby LED traffic lights found by the positioning device.
所述控制系统包括：车辆通行时间检测设备，用于检测并输出车辆通过当前交通路口所需的平均时间，包括：计时单元，用于提供并输出计时信号；超声波发送单元，位于当前交通路口的正上方，用于向当前交通路口地面发射超声波信号；超声波接收单元，与超声波发送单元一起位于当前交通路口的正上方，用于接收反射的超声波信号；检测控制单元，分别与计时单元、目标识别单元、超声波发送单元和超声波接收单元连接，用于基于发射超声波信号和接收反射的超声波信号之间的时间间隔是否发生变化，确定是否发出目标存在信号，还用于基于每一辆通过当前交通路口的车辆的通行时间确定车辆通过当前交通路口所需的平均时间；目标识别单元，位于当前交通路口的正上方并位于超声波发送单元之后，距离超声波发送单元的径向长度为10毫米，分别与检测控制单元和计时单元连接，用于在接收到目标存在信号后，基于图像识别方式确定通过当前交通路口的目标是否为车辆，以将车辆目标信号或非车辆目标信号发送给检测控制单元，同时计算车辆车头经过当前交通路口预设基线和车辆车尾经过当前交通路口预设基线之间的时间间隔，以作为车辆的通行时间发送给检测控制单元，其中，当前交通路口预设基线在当前交通路口地面上，径向位置在目标识别单元之后，距离目标识别单元的径向长度为30毫米。The control system includes: vehicle passing time detection equipment, used to detect and output the average time required for vehicles to pass through the current traffic intersection, including: a timing unit, used to provide and output a timing signal; an ultrasonic sending unit, located at the current traffic intersection Directly above, it is used to transmit ultrasonic signals to the ground of the current traffic intersection; the ultrasonic receiving unit is located directly above the current traffic intersection together with the ultrasonic transmitting unit, and is used to receive reflected ultrasonic signals; the detection control unit is connected with the timing unit and target recognition respectively The unit, the ultrasonic sending unit and the ultrasonic receiving unit are connected, and are used to determine whether to send a target presence signal based on whether the time interval between the transmitted ultrasonic signal and the received reflected ultrasonic signal changes, and is also used to determine whether to send a target presence signal based on each vehicle passing through the current traffic intersection. The passing time of the vehicle determines the average time required for the vehicle to pass through the current traffic intersection; the target recognition unit is located directly above the current traffic intersection and behind the ultrasonic sending unit, and the radial length from the ultrasonic sending unit is 10 mm. The control unit is connected to the timing unit, and is used to determine whether the target passing through the current traffic intersection is a vehicle based on image recognition after receiving the target presence signal, so as to send the vehicle target signal or the non-vehicle target signal to the detection control unit, and simultaneously calculate The time interval between the front of the vehicle passing the preset baseline of the current traffic intersection and the rear of the vehicle passing the preset baseline of the current traffic intersection is sent to the detection and control unit as the passing time of the vehicle, wherein the preset baseline of the current traffic intersection is at the current intersection On the ground, the radial position is behind the target identification unit, and the radial length from the target identification unit is 30 mm.
所述控制系统包括：剩余通行车辆数量指示设备，用于与车辆通行时间检测设备连接以接收车辆通过当前交通路口所需的平均时间，与黄灯倒计时指示设备连接以接收其输出的倒计时时间，并基于车辆通过当前交通路口所需的平均时间和倒计时时间确定黄LED主灯或黄LED辅灯在关闭前还能够通行的车辆数量以作为剩余通行车辆数量显示和输出。The control system includes: remaining vehicle number indicating equipment, which is used to connect with the vehicle passing time detection equipment to receive the average time required for vehicles to pass through the current traffic intersection, and to be connected to the yellow light countdown indicating equipment to receive the countdown time output by it, And based on the average time and countdown time required for the vehicle to pass through the current traffic intersection, determine the number of vehicles that can pass through the yellow LED main light or the yellow LED auxiliary light before being turned off as the number of remaining passing vehicles to display and output.
所述控制系统包括：LED三色灯设备，包括红LED主灯、黄LED主灯、绿LED主灯、红LED辅灯、黄LED辅灯和绿LED辅灯，红LED辅灯、黄LED辅灯和绿LED辅灯分别作为红LED主灯、黄LED主灯和绿LED主灯的替换灯，以在相应主灯发生故障时替换相应主灯进行显示或关闭操作；黄灯倒计时指示设备，用于在LED三色灯设备中的黄LED主灯或黄LED辅灯显示时，触发对黄LED主灯或黄LED辅灯的显示倒计时操作，并显示对应的倒计时时间。The control system includes: LED three-color light equipment, including red LED main light, yellow LED main light, green LED main light, red LED auxiliary light, yellow LED auxiliary light and green LED auxiliary light, red LED auxiliary light, yellow LED auxiliary light The auxiliary light and the green LED auxiliary light are respectively used as the replacement lights of the red LED main light, yellow LED main light and green LED main light to replace the corresponding main light for display or shutdown operation when the corresponding main light fails; the yellow light countdown indicates the device , used to trigger the display countdown operation of the yellow LED main light or the yellow LED auxiliary light when the yellow LED main light or the yellow LED auxiliary light in the LED three-color light device is displayed, and display the corresponding countdown time.
所述控制系统包括：行人通行指示灯设备，包括行人通行允许灯、行人通行切换灯和行人通行禁止灯，行人通行切换灯显示在行人通行允许灯显示前并在行人通行禁止灯关闭后；信号灯控制设备，分别与LED三色灯设备、黄灯倒计时指示设备和行人通行指示灯设备连接，用于同时控制LED三色灯设备、黄灯倒计时指示设备和行人通行指示灯设备的显示操作；LCD显示设备，包括LCD显示屏、显示屏驱动单元和RS232串行通信单元，LCD显示屏集成有触摸屏，显示屏驱动单元与LCD显示屏连接，用于驱动LCD显示屏以实现显示操作或接收触摸屏输入操作，串行通信单元分别与显示屏驱动单元和MSP430单片机连接，用于接收显示内容或发送触摸片输入内容。The control system includes: pedestrian traffic indicator light equipment, including pedestrian traffic permission lights, pedestrian traffic switching lights and pedestrian traffic prohibition lights, the pedestrian traffic switching lights are displayed before the pedestrian traffic permission lights are displayed and after the pedestrian traffic prohibition lights are turned off; the signal lights The control device is respectively connected with the LED three-color light device, the yellow light countdown indicator device and the pedestrian traffic light device, and is used to simultaneously control the display operation of the LED tri-color light device, the yellow light countdown indicator device and the pedestrian traffic light device; LCD Display device, including LCD display, display drive unit and RS232 serial communication unit, the LCD display is integrated with a touch screen, and the display drive unit is connected to the LCD display to drive the LCD display to achieve display operation or receive touch screen input Operation, the serial communication unit is respectively connected with the display driver unit and the MSP430 single-chip microcomputer to receive the display content or send the touch pad input content.
所述控制系统包括：车流量检测设备，包括有源环形车辆检测单元和第二RS485通信单元，有源环形车辆检测单元用于对通行于当前交通路口的车辆的车速、车长、车距和车辆密度进行检测，第二RS485通信单元分别与有源环形车辆检测单元和远端中央控制设备连接，用于将通行于当前交通路口的车辆的车速、车距和车辆密度发送给远端中央控制设备。The control system includes: traffic flow detection equipment, including an active circular vehicle detection unit and a second RS485 communication unit, the active circular vehicle detection unit is used to check the speed, vehicle length, vehicle distance and The vehicle density is detected, and the second RS485 communication unit is respectively connected with the active ring vehicle detection unit and the remote central control device, and is used to send the vehicle speed, distance and vehicle density of the vehicles passing through the current traffic intersection to the remote central control equipment.
所述控制系统包括：电源供应设备，包括市电接入接口、变压整流电路、滤波稳压电路和电压转换电路，市电接入接口用于接收市电电力供应，变压整流电路与市电接入接口连接，用于对接收的市电电力信号依次进行变压操作和整流操作，以获得整流电力信号，滤波稳压电路与变压整流电路连接，用于对整流电力信号依次进行滤波操作和稳压操作，以获得稳压电力信号，电压转换电路与滤波稳压电路连接，用于对稳压电力信号进行电压转换操作，以获得12V、5V或3.3V电压信号。The control system includes: power supply equipment, including a mains power access interface, a transformer and rectifier circuit, a filtering and voltage stabilization circuit, and a voltage conversion circuit. The electrical access interface is used to perform voltage transformation and rectification operations on the received mains power signals in order to obtain rectified power signals. The filtering and stabilizing circuit is connected to the transformation and rectification circuit for sequentially filtering the rectified power signals operation and voltage stabilization operation to obtain a voltage-stabilized power signal, and the voltage conversion circuit is connected to the filter voltage-stabilization circuit for voltage conversion operation on the voltage-stabilized power signal to obtain a 12V, 5V or 3.3V voltage signal.
其中，红LED主灯、黄LED主灯、绿LED主灯、红LED辅灯、黄LED辅灯和绿LED辅灯中每一个LED灯都包括负极引脚、正极引脚、反射帽、LED芯片和环氧树脂透镜，LED芯片分别与负极引脚和正极引脚连接，反射帽设置在LED芯片的下方，环氧树脂透镜为圆形，设置在LED芯片上方并包裹LED芯片，用于保护LED芯片并对LED芯片发出的光线进行聚光。Among them, each LED light in the red LED main light, yellow LED main light, green LED main light, red LED auxiliary light, yellow LED auxiliary light and green LED auxiliary light includes a negative pin, a positive pin, a reflective cap, an LED chip and epoxy resin lens, the LED chip is connected to the negative pole pin and the positive pole pin respectively, the reflective cap is set under the LED chip, the epoxy resin lens is circular, set above the LED chip and wraps the LED chip for protection the LED chip and condense the light emitted by the LED chip.
可选地，在所述控制系统中：定位设备包括测距单元和GPS单元；替换地，检测控制单元的全部操作由MSP430单片机实现；黄灯倒计时指示设备和剩余通行车辆数量指示设备被集成在一块集成电路板上；车辆通行时间检测设备被设置在当前交通路口上方的横杆中央位置，LCD显示设备被设置在当前交通路口附近的控制柜内。Optionally, in the control system: the positioning device includes a distance measuring unit and a GPS unit; alternatively, all operations of the detection control unit are realized by an MSP430 single-chip microcomputer; the yellow light countdown indicator device and the remaining vehicle quantity indicator device are integrated in the An integrated circuit board; the vehicle passing time detection device is arranged at the center of the crossbar above the current traffic intersection, and the LCD display device is arranged in the control cabinet near the current traffic intersection.
另外，GPS是英文GlobalPositioningSystem(全球定位系统)的简称。GPS起始于1958年美国军方的一个项目，1964年投入使用。20世纪70年代，美国陆海空三军联合研制了新一代卫星定位系统GPS。主要目的是为陆海空三大领域提供实时、全天候和全球性的导航服务，并用于情报搜集、核爆监测和应急通讯等一些军事目的，经过20余年的研究实验，耗资300亿美元，到1994年，全球覆盖率高达98％的24颗GPS卫星星座己布设完成。In addition, GPS is the abbreviation of English Global Positioning System (Global Positioning System). GPS began as a project of the US military in 1958 and was put into use in 1964. In the 1970s, the US Army, Navy and Air Force jointly developed a new generation of satellite positioning system GPS. The main purpose is to provide real-time, all-weather and global navigation services for the three major fields of land, sea and air, and for some military purposes such as intelligence collection, nuclear explosion monitoring and emergency communication. After more than 20 years of research and experiments, it cost 30 billion US dollars. By 1994 , 24 GPS satellite constellations with a global coverage rate of up to 98% have been deployed.
利用GPS定位卫星，在全球范围内实时进行定位、导航的系统，称为全球卫星定位系统，简称GPS。GPS是由美国国防部研制建立的一种具有全方位、全天候、全时段、高精度的卫星导航系统，能为全球用户提供低成本、高精度的三维位置、速度和精确定时等导航信息，是卫星通信技术在导航领域的应用典范，他极大地提高了地球社会的信息化水平，有力地推动了数字经济的发展。A system that uses GPS positioning satellites to perform real-time positioning and navigation around the world is called the global satellite positioning system, or GPS for short. GPS is a comprehensive, all-weather, all-time, high-precision satellite navigation system developed and established by the US Department of Defense. It can provide global users with low-cost, high-precision three-dimensional position, speed and precise timing navigation information. The application model of satellite communication technology in the field of navigation has greatly improved the informatization level of the earth society and strongly promoted the development of the digital economy.
采用本发明的LED交通信号灯控制系统，针对现有技术无法为车辆驾驶员提供更多辅助信息以及供电无法有效保障的技术问题，通过建立黄灯显示倒计时机制、黄灯显示剩余时间和无线充电机制，解决上述技术问题，同时，还对现有的LED交通信号灯的结构和功能进行了优化和完善，从而有效提高了LED交通信号灯的自动化水平。Adopting the LED traffic signal light control system of the present invention, aiming at the technical problems that the existing technology cannot provide more auxiliary information for vehicle drivers and the power supply cannot be effectively guaranteed, by establishing a yellow light display countdown mechanism, a yellow light display remaining time and a wireless charging mechanism , to solve the above technical problems, and at the same time, optimize and perfect the structure and function of the existing LED traffic lights, thereby effectively improving the automation level of the LED traffic lights.
可以理解的是，虽然本发明已以较佳实施例披露如上，然而上述实施例并非用以限定本发明。对于任何熟悉本领域的技术人员而言，在不脱离本发明技术方案范围情况下，都可利用上述揭示的技术内容对本发明技术方案做出许多可能的变动和修饰，或修改为等同变化的等效实施例。因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均仍属于本发明技术方案保护的范围内。It can be understood that although the present invention has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or be modified into equivalent changes, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610246836.9ACN105702064A (en) | 2016-04-20 | 2016-04-20 | A kind of LED traffic light control method |
| CN201610481377.2ACN106056941A (en) | 2016-04-20 | 2016-04-20 | LED traffic signal lamp control system |
| Application Number | Priority Date | Filing Date | Title |
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| CN201610246836.9ACN105702064A (en) | 2016-04-20 | 2016-04-20 | A kind of LED traffic light control method |
| Application Number | Title | Priority Date | Filing Date |
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| CN201610481377.2ADivisionCN106056941A (en) | 2016-04-20 | 2016-04-20 | LED traffic signal lamp control system |
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| CN105702064Atrue CN105702064A (en) | 2016-06-22 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201610246836.9APendingCN105702064A (en) | 2016-04-20 | 2016-04-20 | A kind of LED traffic light control method |
| CN201610481377.2AWithdrawnCN106056941A (en) | 2016-04-20 | 2016-04-20 | LED traffic signal lamp control system |
| Application Number | Title | Priority Date | Filing Date |
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| CN201610481377.2AWithdrawnCN106056941A (en) | 2016-04-20 | 2016-04-20 | LED traffic signal lamp control system |
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