WO2010133145A1

WO2010133145A1 - Synchronisation control method for solar road studs

Info

Publication number: WO2010133145A1
Application number: PCT/CN2010/072706
Authority: WO
Inventors: 陈伟
Original assignee: Chen Wei
Priority date: 2009-05-18
Filing date: 2010-05-13
Publication date: 2010-11-25
Also published as: CN101567129A

Abstract

A synchronization controlling method for solar road studs is provided. The method uses the time service function of a geosynchronous positioning satellite, and performs synchronous working control with the same time source on the solar synchronization road studs installed discretely. Said solar synchronization road stud comprises a shell, a solar cell, an accumulator battery, a charge-discharge and on-off control circuit, a miniature satellite receiving antenna, a satellite receiving module, a microprocessor, and an electroluminescent device. After receiving a time service signal of the geosynchronous positioning satellite by said miniature satellite receiving antenna, the time information and the second synchronizing information are analyzed and extracted through the satellite receiving module. After receiving a second synchronizing signal offered by the satellite receiving module, the microprocessor controls the synchronous turn-on and turn-off of the electroluminescent device according to preset flicker frequency and flicker duty cycle. Using synchronizing time to perform synchronous working control on the solar road studs, above control method is not limited by factors such as the length and trend of roads, and is simple and convenient in implementation and reliable in control.

Description

Solar road spike synchronization control method

The invention relates to a spike control method, in particular to a solar spike synchronization control method, which is mainly applied to a nighttime enhanced display of a marking line in road traffic, and uses a satellite timing synchronous control to control the solar power supply of the spike.

Background technique

Solar road spikes are mainly used in dangerous sections such as highway markings and Linya section markings, which are used as road signs for nighttime roads, as well as applications for nighttime beautification in urban roads. The above application requires the solar road studs installed discretely along the road marking line to achieve synchronous work. In the non-synchronous working state, the feeling of "shaking eyes" will be generated, which will affect the safety of road traffic. The discrete installation of solar studs is synchronous. The technical solution adopted in the prior art is to set up a centralized control source, and then use the wireless control or wired control to centrally control the discrete solar studs in the control area. The applicant's prior application CN201095727, "A Digitally Controlled Solar Radiation Road Signpost," discloses a wirelessly controlled solar spike comprising a housing, a display window, a light emitting diode, and a wireless control system. The application uses the wireless control method to realize the discrete solar spike synchronization work. However, the wireless control method is the same as the wired control method, and can only realize the short-distance solar spike synchronization and numerical control work in a small area under the limitation of the control distance. In order to adapt to the changing direction of the lanes of the day and night lanes and the change of the direction of the variable lanes of the intersections, the mode of wirelessly controlling the solar spikes synchronous operation is the same as the wired control method, and cannot be applied to long-distance marking enhancement, and will also be subject to restrictions. The implementation cost of synchronous control and the operating cost of control management.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art, and to provide a solar road spike synchronization control method which is not limited by the length of the road, the trend, and the like, and is simple to implement and highly reliable.

The technical solution adopted by the present invention to solve the above problems is as follows: The solar road spike synchronization control method is characterized in that: using the timing function of the geosynchronous positioning satellite, using solar synchronous spikes, using the same time source to discretely install the solar synchronous track The nail performs synchronous work control;

The solar synchronous spike comprises a casing, a solar battery, a battery pack, and charging and discharging and opening and closing a control circuit, a micro satellite receiving antenna, a satellite receiving module, a microprocessor and an electroluminescent device; the solar cell charges the battery pack, and is connected to the charging and discharging control circuit and the opening and closing control circuit, and the micro satellite receiving antenna is connected to the satellite receiving The module, the satellite receiving module is connected to the microprocessor, the output end of the microprocessor is connected to the electroluminescent device, and the electroluminescent device is driven and controlled by the microprocessor;

After receiving the timing signal of the geosynchronous positioning satellite, the micro satellite receiving antenna parses and extracts time information and second synchronization information through the satellite receiving module, and after receiving the second synchronization signal provided by the satellite receiving module, the microprocessor follows the pre The flicker frequency, the flicker duty cycle control the illumination and deactivation of the electroluminescent device, and the discretely mounted solar sync doss perform a highly synchronized mode of operation using the time configuration and start-up time derived from the same satellite precise timing. Simultaneous work control of the solar road studs is carried out using the synchronization time, which is simple, convenient and reliable.

In the solar road spike synchronization control method of the present invention, the microprocessor obtains different flicker frequencies and duty ratios of the solar synchronization spikes by differently assigning the timing schemes.

In the solar road spike synchronization control method of the present invention, the satellite receiving module of the solar synchronous spike is matched with the timing source of the geosynchronous positioning satellite selected by the solar spike synchronization control method.

In the solar road spike synchronization control method of the present invention, the microprocessor of the solar synchronous spike is matched with the satellite receiving module, and the microprocessor realizes the synchronous working mode of the solar synchronous spike by program control.

Compared with the prior art, the present invention has the following advantages: The present invention utilizes the timing function of the geosynchronous positioning satellite to synchronously control the solar road spikes, and distinguishes the centralized control source set by the prior art, and controls the wireless or wired control mode. The solar road nails in the zone are centrally controlled, and the synchronous time is used to synchronously manage the solar spikes, so that the discretely installed solar spikes can work effectively in the synchronous mode. The control method overcomes the defects of the prior art, which is limited by the size of the area, high installation cost and high running cost, has the limitation of the use environment of the road length and the direction, is simple and convenient to implement, has high reliability, good guiding effect, and has broad application prospects. Etc.

DRAWINGS

1 is a schematic block diagram showing the structure of a solar synchronous spike using the solar spike simulation method of the embodiment. detailed description

The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.

Embodiment of the solar road spike synchronization control method, using the synchronization time to synchronously control and manage the discretely installed solar road spikes; using the synchronization time provided by the timing function of the geosynchronous positioning satellite, using the solar synchronous spike to control the solar spike Work synchronously.

Referring to FIG. 1, an embodiment of a solar synchronous energy rail includes a housing, a solar battery VS, a battery pack VI, a charge and discharge control circuit DA, an opening and closing control circuit L1, a micro satellite receiving antenna TX, a satellite receiving module CT, and a microprocessor CU. And electroluminescent devices. The solar cell VS charges the battery pack VI, and is connected to the charge and discharge control circuit DA and the opening and closing control circuit L1; the solar cell VS is connected to the battery pack VI through the charge and discharge control circuit DA, and the charge and discharge control circuit DA is responsible for the battery pack VI. Charge and discharge control; the charge and discharge control circuit DA output is connected to the open/close control circuit L1, the output of the open/close control circuit L1 is connected to the DC/DC circuit L2 and the satellite receiving module CT, and the DC/DC circuit L2 converts the voltage of the battery pack VI To adapt to the operating voltage of various chips and modules, the output of the DC/DC circuit L2 is connected to the microprocessor CU and the satellite receiving module CT. The micro satellite receiving antenna TX is connected to the satellite receiving module CT, and the output of the satellite receiving module CT is connected to the input of the microprocessor CU, wherein the second pulse synchronizing signal of the satellite receiving module CT is connected with the hardware interrupt input terminal of the microprocessor CU, and the satellite receiving The serial port of the module CT is connected to the serial port of the microprocessor CU. The output end of the microprocessor CU is directly connected to the electroluminescent device, or the electroluminescent device is connected through the driving circuit QD, the output signal of the microprocessor CU is controlled to drive the driving circuit QD, and the lighting circuit QD is used to control the lighting and closing of the electroluminescent device. Some applications do not need to be connected to the drive circuit QD.

The control flow of the solar road spike synchronization control method of the embodiment is:

1. Solar battery VS controls the charging or discharging of the built-in micro battery pack VI through the charge and discharge control circuit DA, and controls the opening or closing of the power of the electroluminescent device through the charge and discharge control circuit VI;

2. Micro-satellite receiving antenna The satellite receiving time signal provided by the TX receiving geosynchronous positioning satellite;

3. When the micro satellite receiving antenna receives the satellite timing signal, the satellite receiving module CT parses and extracts the time information and the second synchronization information;

4. After receiving the second synchronization signal provided by the satellite receiving module CT, the microprocessor CU follows the preset. The flashing frequency, the flashing duty cycle illuminate and turn off the discretely mounted solar synchroof of the electroluminescent device. Discretely installed solar synchronous spikes perform highly synchronized modes of operation using time configurations and start-up times derived from the same satellite precise timing. The microprocessor CU can obtain different flicker frequencies and duty cycles of the solar sync pins by different assignments to the timing scheme.

The principle of using solar timing signals to synchronize solar spikes is:

The satellite positioning devices that can be received in China provide the ability to identify the coordinates of the location and precise timing functions. If we use the timing function of the GPS system, we can now get a timing accuracy of about 100ns. For solar synchronous spikes, the cumulative error of 16 hours is usually less than 5% of the flashing period, which should not affect the operation of the solar synchronous spike. 16 hours is the maximum time for each work of the solar synchronous spike. . In terms of 60 flashes per minute, there is one blinking cycle per second. According to the duty ratio of 1: 1 design, each flashing is bright for 500ms, and 500ms is extinguished. In actual operation, the error is less than 5% or less than 25ms.

The satellite positioning module can provide coordinate information, time data of the Greenwich Mean Time, time and minute, and the synchronous second signal. The error of the synchronous second signal is usually less than 100 ns. Depending on the configuration of the chipset and the module, the data will be Differences. After the satellite receiving module works normally, after receiving the satellite signal and effectively identifying it, it will give coordinate data, time data and second synchronization signal. When the satellite signal is not received or the received satellite signal is unrecognizable, the satellite receiving module does not. The above data and signal output. The invention uses the second synchronizing signal as the counter starting signal source, and the counter reading accuracy depends on the actual use requirements. When the microprocessor recognizes the second synchronization signal, it starts counting according to a predetermined cycle. If lms is used as the counting period, a counting amount of 1000 ms can be obtained between the two second synchronization signals, and within the counting amount, Get any synchronized duty cycle greater than 1 ms, and another sync cycle begins again after 1000 ms, so for discrete solar spikes, you can design application requirements based on the synchronization time obtained, or you can count cycles Extends to several seconds of sync signal period. In this embodiment, if the blinking frequency of the spike is 60 beats/min, the counter is set to output a control signal every 500 ms, and is turned on when the synchronization of the second sync signal starts, and then goes off after 500 ms, and the second time is received again. When the signal is synchronized, it lights up again and repeats until the solar sync pin is closed during the day. Different flicker frequencies only need to set the working time and duty ratio after lighting. For example, when the flashing frequency of the solar sync pin is set to 240 times, the duty ratio is 1: 1, when the second sync signal starts. When the LED interval is 125ms on and off, the next cycle will be started until the next second sync signal arrives. Different flicker frequencies and different duty cycles can be obtained in different time configurations. When the working time period is greater than 1 second, in order to obtain synchronization, it is necessary to identify odd or even seconds. In this case, only GMT is called. The hour, minute and second signals in the middle can be identified. The discretely mounted solar synchronous spikes will work synchronously in a uniform synchronized time configuration, independent of the distance of the mounting location, and the job synchronization between the spikes is very good.

The housing of the solar synchronous spike is of a pressure-bearing and suitable shape for road traffic, and has a space for mounting a circuit board and a battery pack VI inside, and an external position for mounting the solar panel VS. The housing of the solar synchronous spike can be used in various shapes such as a circle, a square, and an ellipse, provided that the above conditions are satisfied. In the embodiment, a square aluminum casing is used, and a 125 X 125 X 25 mm aluminum alloy casing conforming to the requirements of GB/T 19813-2005 is used. The housing does not affect the end use of the solar synchrosphere.

The solar cell VS can use all types of solar cells having a photoelectric conversion efficiency greater than the power area ratio required for the solar spike. In the embodiment, a polycrystalline silicon solar cell is used, and a set of polycrystalline silicon solar cells of about 0.55 W is used. The solar panel on the upper part of the housing is mounted on the solar cell with a wear resistant acrylic transparent film. The configuration of the solar cell VS needs to consider the power consumption requirements of the circuit composition, the number of sunshine in the place of use, and the technical target of the spike, etc., and select the adaptation; the capacity of the solar cell VS is not directly related to the goal of achieving synchronous operation, the solar synchronous channel The continuous working time of the nail is related to the solar panel VS and the battery VI capacity.

The battery pack VI uses a built-in micro battery pack. The built-in micro battery pack can use a battery pack that meets the temperature change requirements of the road traffic environment and meets the built-in volume requirements and capacity requirements. In the embodiment, a nickel-hydrogen battery is used, and two AAA type 800 mA batteries are used. The /H capacity NiMH battery, the internal space of the housing of this embodiment can only accommodate two AAA batteries, and the use of two AAA nickel-metal hydride batteries meets the operating voltage requirements of the spike chipset and module. In actual use, depending on the environment, one, two or more batteries can be configured, and batteries of other capacities or materials can be configured. The battery configuration mode is mainly subject to the voltage and power of the chipset or module. The parameters such as the adaptation coefficient of the solar panel VS are not necessarily related to the effect of the spike work.

The charge and discharge control circuit DA in the charge and discharge and opening and closing control circuit is mainly responsible for the battery pack VI Charge and discharge control to prevent overcharging or overdischarging; The opening and closing control circuit L1 is responsible for detecting the working threshold of the solar spike, turning off the solar spike during the day, turning on the solar spike at night, and accepting the microprocessor CU control to achieve Working status management of each component.

The satellite receiving module CT can receive the satellite time signal, and can choose to use the receiving module composed of single chip or multi-chip. The satellite receiving module CT matches the satellite timing source selected during the synchronous control of the solar spike, and can select the receiving module of the US GPS system, or the receiving module of the European "Galileo" satellite, or the global "GLONASS" global navigation positioning. The receiving module of the satellite, or the Chinese "Beidou" satellite positioning receiving module, the different satellite receiving modules are similar in terms of the final use effect. The satellite receiving module CT uses the associated miniature satellite receiving antenna TX for optimum reception and compliance with the technical and volume requirements for mounting into solar spikes. The selection of the satellite receiving module CT, although there are at least four kinds of satellite timing sources currently available for commercial use, but the GPS system in the United States is still widely used in the world, and the chipset thereof is relatively mature and inexpensive, and this embodiment The GPS system is used as the source of the synchronous timing system, and the US SiRF chipset is used as the satellite receiving chip. Usually, in actual use, the chipset is composed of modules with application focus for the final application. The practical and most important application of this embodiment is timing, using CTCT-type miniature based on the US SiRF III GPS chipset produced by Hangzhou Command and Communication Equipment Co., Ltd. The low power module acts as a satellite receiving module CT. The module is mainly used in industrial applications requiring synchronous timing, and also outputs data such as Greenwich time and coordinates. It has a second synchronous signal output, and the pulse width of the synchronous signal is adjustable. The time precision error based on the rising edge is less than or equal to l5 ns. .

The microprocessor CU mainly performs post-processing on the signal received by the satellite receiving module CT and finally outputs an effective synchronous control signal. The microprocessor CU is matched with the satellite receiving module CT, and the microprocessor CT realizes the solar spike by program control. Synchronous working mode. Currently available microprocessors with program control and processing capabilities are available on the premise of meeting power/processing capabilities/control functions/volume requirements. The microprocessor CU of this embodiment uses a mature low-power 51 series P89LPC915HDH type MCU with program processing. The reason for selecting the microprocessor is that it has the function to meet the usage requirements, and the power consumption and voltage specifications are also Meet the requirements for use. The microprocessor CU controls the opening and closing control circuit L1 to realize the operation management of the satellite receiving module CT. When the microprocessor CU is in the "automatic" state, the satellite receiving module CT is directly obtained through the DC/DC circuit L2. Power supply; When the microprocessor CU intervenes in the working state of the satellite receiving module CT, the working power of the satellite receiving module CT can be cut off by the opening and closing control circuit L1.

The electroluminescent device may employ an LED or other electroluminescent element. In this embodiment, an LED is used, and the microprocessor CU is connected to the LED circuit. Not all models of microprocessors can directly drive LEDs. When LEDs that illuminate solar spikes on both sides are required, the drive control circuit QD can be added to the front end of the LED circuit, and then connected to the LED circuit through the drive control circuit QD. The QD amplifies the drive current, and the drive circuit QD uses an ordinary low-power transistor. When using a single-sided display, the P89LPC915HDH MCU can directly drive the required LED. LED color selection is set according to actual needs. Generally, red, yellow and white LEDs are used. Usually, three LEDs are installed in the single-sided display window of the solar spike. If it is a double-sided display window, three LEDs are installed, and the brightness and the half are installed. Strong angles should conform to national standards.

The solar synchronous spike will stop working during the daytime, for example, when the illumination is greater than 150LEX. When entering the night, the solar cell VS electromotive force is lower than the shutdown threshold. At this time, the opening and closing control circuit L1 is turned on, the microprocessor CU is activated, and the satellite receiving module The CT starts and starts to enter the cold start state. During the search process, the serial port and the second signal output of the satellite receiving module CT have no output. When the receiving module CT receives the valid satellite signal, it will synchronize from the second signal to each side. The second signal is output in seconds, and the Greenwich Mean Time and coordinate parameters are output from the serial port. In the present invention, coordinate data will be discarded, using only real time data and seconds signals. The pulse width of the second signal output is configurable. In the receiving module CT, the embodiment selects a second signal pulse width of 100 ns, and the rising edge of the second signal pulse is the start identifier of the second synchronization signal, and the positive and negative errors are less than 15 ns. . The microprocessor CU interrupts the capture of the valid second sync signal to generate a hardware interrupt, and starts counting in units of 1 millisecond. The unit of counting can be determined according to the final output accuracy requirement. The step size can also be determined according to the needs, as long as the final accuracy is satisfied. Use the requirements. From the moment when the second synchronization signal arrives, the microprocessor CU outputs a control signal for lighting the LED. When the predetermined lighting period ends, the control signal for turning off the LED is output, and the counting is turned on and the LED is turned on when the next second synchronization signal arrives. The cycle lights up and turns off the LED until the end of the duty cycle, ie when the illumination is greater than the system shutdown threshold, the entire solar sync pin will be closed. If 60 flashing frequencies are used, the LED will light when the second sync signal arrives. When the count is full for 500ms, the LED will be turned off until the next second sync signal arrives, and the second control cycle will be started until it is turned off.

Due to the small control interval, the clock accuracy of the microprocessor fully satisfies the work of the solar synchronous spike. Error requirements, so the error calibration process is generally not required. Under the condition of time synchronization, through the control of software, the synchronous working state of many different control modes can be realized. For example, in special holidays or special application requirements, the solar road spikes need to be started periodically. The implementation method is to set the starting time condition in the program of the microprocessor CU, and use the Greenwich time to perform the local time according to the coordinate time zone. Conversion and calibration, the local time is used to control the opening and closing time of the solar spike, the opening and closing time is the time condition to be set, and the microprocessor CU controls the working state of the solar spike by comparing the time conditions, when the starting condition is satisfied Then turn on, and turn off the solar spike when the off condition is met.

The above embodiment is a detailed description of the solar ball stud synchronization control method of the present invention, but the description is not intended to limit the scope of the present invention, and any person skilled in the art can avoid the concept and scope of the present invention. The changes and refinements made should fall within the scope of protection of the present invention.

Claims

Claim 9

A solar road spike synchronization control method, characterized in that: using a geosynchronous positioning satellite timing function, using solar synchronous spikes, using the same time source to synchronously control the discretely installed solar synchronous spikes;

The solar synchronous spike comprises a casing, a solar battery, a battery pack, a charge and discharge and opening and closing control circuit, a micro satellite receiving antenna, a satellite receiving module, a microprocessor and an electroluminescent device; and the solar cell to the battery pack Charging, and connected to the charge and discharge control circuit and the opening and closing control circuit, the micro satellite receiving antenna is connected to the satellite receiving module, the satellite receiving module is connected to the microprocessor, the output end of the microprocessor is connected to the electroluminescent device, and the electroluminescent device is connected by the microprocessor Drive and control;

After receiving the timing signal of the geosynchronous positioning satellite, the micro satellite receiving antenna parses and extracts time information and second synchronization information through the satellite receiving module, and after receiving the second synchronization signal provided by the satellite receiving module, the microprocessor follows the pre The flicker frequency, the flicker duty cycle control the illumination and deactivation of the electroluminescent device, and the discretely mounted solar sync doss perform a highly synchronized mode of operation using time configurations and start times derived from the same satellite precise timing;

The microprocessor obtains different flicker frequencies and duty cycles of the solar sync pins by different assignments to the timing scheme.

2. The solar spike synthesis control method according to claim 1, wherein: the satellite receiving module of the solar synchronous spike matches the timing source of the geosynchronous positioning satellite selected by the solar spike synchronization control method.

3. The solar spike synthesis control method according to claim 2, wherein: the microprocessor of the solar synchronization spike is matched with a satellite receiving module, and the microprocessor realizes solar synchronization by program control. The synchronous working mode of the nail.