CN210899760U

CN210899760U - Solar traffic sign lamp board control circuit

Info

Publication number: CN210899760U
Application number: CN201921167757.4U
Authority: CN
Inventors: 柏虎跃; 张如清; 辛红升; 柏鹏飞
Original assignee: Ningbo Yixin Photoelectric Co ltd
Current assignee: Ningbo Yixin Photoelectric Co ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-06-30
Anticipated expiration: 2029-07-24

Abstract

The utility model relates to a solar energy traffic sign lamp tablet control circuit, including the central processing unit chip, the last electricity of central processing unit chip is connected with the lamp control circuit of pilot lamp tablet, mains voltage regulating circuit, LED self-checking circuit, emptys protection circuit, solar cell protection circuit, data transmission module, and LED self-checking circuit's input is lamp control circuit even, and LED self-checking circuit's output is connected on the central processing unit chip, and the central processing unit chip passes through data transmission module and remote monitoring center communication connection. The control circuit increases the current self-check of each LED lamp string before the lamp is turned on, transmits fault information to the monitoring center in time, increases the identification of the traffic light falling, can transmit the traffic marker light to the monitoring center in time, facilitates the monitoring center to know the fault and maintenance information, improves the safety of the traffic marker light applied to the road, and facilitates the timely maintenance.

Description

Solar traffic sign lamp board control circuit

Technical Field

The utility model relates to a traffic sign lamp field especially relates to a solar energy traffic sign lamp tablet control circuit.

Background

The road traffic marker light is an indispensable important link for traffic safety, and the traffic marker light is taken as a main facility for road safety and is powered by a power grid through an underground cable or an overhead medium wire at present. With the rapid development of urban and rural road traffic network construction, the number of traffic marker lamps is more and more, the investment of equipment for continuously using and laying power transmission lines, configuring transformers and the like is higher and higher, the urban power consumption is increased, and the requirements of long-term urban development are not met in the aspects of power saving, energy saving and environmental protection.

Solar power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of a semiconductor interface. The photovoltaic effect is called as photovoltaic effect for short, the photovoltaic power generation has the advantages of less limitation of regions, the photovoltaic system also has the advantages of no noise, low pollution, capability of generating power and supplying power on site without consuming fuel and erecting a power transmission line and short construction period because sunlight generally illuminates the ground, so that the solar traffic marker lamp is gradually applied to the road, the conventional solar traffic marker lamp usually has the condition that a plurality of lamp beads are not lighted or even a plurality of LEDs in the regions on one traffic marker are not lighted when in use, and a remote monitoring center can not know the condition that the traffic marker lamp fails at the first time under the condition that the traffic safety is not influenced, and the insecurity of the road is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the problem to prior art exists provides a solar energy traffic sign lamp tablet control circuit that the security performance is high.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a solar traffic sign lamp board control circuit, characterized by comprising: the intelligent LED automatic monitoring system comprises a central processing unit chip, wherein a lamp control circuit of an indicating lamp board, a power supply voltage regulating circuit, an LED self-checking circuit, a dumping protection circuit, a solar cell protection circuit and a data transmission module are electrically connected onto the central processing unit chip, the input end of the LED self-checking circuit is connected with the lamp control circuit, the output end of the LED self-checking circuit is connected onto the central processing unit chip, and the central processing unit chip is in communication connection with a remote monitoring center through the data transmission module.

Further, the LED self-checking circuit comprises an operational amplifier, a lamp control circuit is connected to the in-phase input end of the operational amplifier after passing through a small-resistance resistor, the reverse input end of the operational amplifier is connected to the ground after passing through a resistor with the same resistance as the in-phase input end, the output end of the operational amplifier is connected to the central processing unit chip, a high-resistance balance resistor is connected between the output end and the reverse input end of the operational amplifier, and the resistance value of the balance resistor is more than 10 times that of the small resistor.

Furthermore, the lamp control circuit comprises at least one path of LED lamp string, each road lamp control circuit comprises an MOS (metal oxide semiconductor) tube used as a switch, the grid electrode of the MOS tube is connected to the central processing unit chip, the source electrode of the MOS tube is connected with the input end of the LED self-checking circuit, and the drain electrode of the MOS tube is connected to the LED lamp.

Further, the model of the central processing chip is STM32F103CBT6 chip.

Further, the data transmission module comprises a wireless transceiver chip and a GPRS + GPS chip, the GPRS + GPS chip is connected with a SIM card, and the model of the GPRS + GPS chip is AIR 800.

Further, topple over protection circuit including toppling over inductive switch and direction inductive switch, topple over the central processing unit chip of equal electricity connection of positive pole of inductive switch and direction inductive switch, the negative pole all inserts ground, topple over inductive switch and direction inductive switch and be normally open switch, when solar energy LED traffic sign board takes place to topple over, topple over inductive switch and direction inductive switch closure.

Further, still be connected with 433 modules on the central processing unit chip, carry out short distance data transceiver between 433 modules and the central processing unit chip.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a solar energy LED traffic sign lamp tablet control circuit has increased and has carried out electric current self-checking to each LED lamp cluster before the bright light to give surveillance center with timely transmission of fault information, but also increased the differentiateing of empting the traffic light, can in time transmit this traffic sign lamp to surveillance center, made things convenient for surveillance center to know trouble and maintenance information, improved the security that the traffic sign lamp was used on the road, be convenient for in time maintain.

Drawings

Fig. 1 is a schematic block diagram of a solar traffic sign control circuit according to this embodiment.

Fig. 2 is a circuit diagram of the lamp control circuit in the present embodiment.

Fig. 3 is a circuit diagram of a self-test circuit of the LED in this embodiment.

Fig. 4 is a circuit diagram of the dump protection circuit in the present embodiment.

FIG. 5(a) shows a 4.2V-5.1V boosting circuit in the power supply voltage regulator circuit of this embodiment.

Fig. 5(b) shows a first voltage-reducing circuit of 5.1V to 3.3V in the power supply voltage regulating circuit of the present embodiment.

Fig. 5(c) shows a second voltage-reducing circuit of 5.1V to 3.8V in the power supply voltage regulating circuit of the present embodiment.

Fig. 6 is a circuit diagram of the solar cell protection circuit in the present embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 6:

the embodiment provides a solar traffic sign lamp board control circuit, including central processing unit chip 100, central processing unit chip 100 electricity is connected with lamp control circuit 200 of pilot lamp board, mains voltage regulating circuit 300, LED self-checking circuit 400, empty protection circuit 500, solar cell protection circuit 600, data transmission module 700, LED self-checking circuit 400's input is lamp control circuit 200 even, LED self-checking circuit 400's output is connected on central processing unit chip 100, central processing unit chip 100 passes through data transmission module 700 and remote monitoring center communication connection. The central processing unit chip 100 in this embodiment is of a model STM32F103CBT 6.

Preferably, the lamp control circuit 200 includes at least one LED string, each of the lamp control circuits 200 includes a MOS transistor M1 serving as a switch, a gate of the MOS transistor M1 is connected to the central processing unit chip 100, a source is connected to the input terminal of the LED self-test circuit, and a drain is connected to the LED lamp. As shown in fig. 2: in this embodiment, the gate of the MOS transistor M1 is connected to the STM32F103CBT6 through the 100 Ω resistor R1, the source of the MOS transistor M1 is connected to the input terminal of the LED self-test circuit, the 47K Ω resistor R2 is connected between the gate and the source of the MOS transistor M1, the drain of the MOS transistor M1 is connected to the power supply through the inductor L1, the drain of the MOS transistor M1 is connected to the LED light string after being connected to the diode D1 in the forward direction, and in order to prevent the lamp control circuit from being damaged by excessive instantaneous current after starting or power-off, a capacitor connected to the ground is usually connected between the power supply and the inductor L1. When the power supply is switched on, the LED lamp string lights, the MOS tube M1 is switched on, and the current on the source electrode of the MOS tube M1 changes, so that when the detected current exceeds a set value, the LED lamp string breaks down, and needs to be maintained in time.

Preferably, as shown in fig. 3: the LED self-test circuit 400 adopts an operational amplifier U1 with the model number LM321MF, the non-inverting input end of the operational amplifier U1 is connected with the source electrode of a lamp control circuit MOS tube M1 after passing through a 1K omega resistor R3, the inverting input end of the operational amplifier U1 is connected to the ground after passing through a 1K omega resistor R4, the output end of the operational amplifier U1 is connected to an STM32F103CBT6, a 10K omega resistor R5 is connected between the output end and the inverting input end of the operational amplifier U1, two ends of the resistor R5 are connected with a 1K omega resistor R6 and a 0.1uF capacitor C1 in parallel, and the resistor R5 is used as a balance resistor. The LED self-checking circuit that provides through this embodiment can be 11 times with current amplification, and LED lamp pearl short circuit or the not bright condition appear in every LED lamp cluster, and the electric current of this street lamp cluster can the grow, and the operational amplifier U1 that this embodiment adopted is the operational amplifier of low-power consumption, and the change of electric current can be more showing after its enlargies to transmit fault information to the surveillance center, let the observer of surveillance center in time obtain warning.

Preferably, the data transmission module 700 includes a wireless transceiver chip and a GPRS + GPS chip, and the GPRS + GPS chip is connected with a SIM card, and the model of the GPRS + GPS chip is AIR 800.

Preferably, as shown in fig. 4: toppling protection circuit 500 is including toppling over inductive switch and direction inductive switch, and central processing unit chip is connected to the equal electricity in positive pole of toppling over inductive switch and direction inductive switch, and the negative pole all inserts ground, topples over inductive switch and direction inductive switch and is normally open switch, and when solar energy LED traffic sign board takes place to topple over, it is closed to topple over inductive switch and direction inductive switch.

Preferably, as shown in fig. 5(a), 5(b), 5 (c): in this embodiment, the starting rated voltages of the various chips and electronic components include 3.3V, 3.8V and 5V, and the voltage provided by the solar battery is 4.2V, so the power supply voltage regulating circuit 300 includes a 4.2V-5.1V boost circuit, a 5.1V-3.3V first buck circuit, and a 5.1V-3.8V second buck circuit, where the boost circuit is a chip with model TD8228, the first buck circuit is a chip with model ME6214a33PG, and the second buck circuit is a chip with model TD 410.

Preferably, as shown in fig. 6: solar cell protection circuit 600 includes MOS pipe M2 and optoelectronic coupler PC1 in this embodiment, the central processing unit chip is connected to optoelectronic coupler PC 1's one end, the grid of MOS pipe M2 is connected to the other end, the central processing unit chip is still connected to MOS pipe M2's grid, be used for as the enabling end of solar light detection and battery voltage sampling, MOS pipe M2's drain electrode inserts ground, and be connected with the negative pole of battery, MOS pipe M2's source electrode is connected to the negative pole of photovoltaic board when the circuit switches on, during the charging, MOS pipe M2 does not switch on, solar energy directly is to photovoltaic board energy storage and power supply, when can't detect solar energy, MOS pipe M2 switches on, supply power through the lithium cell.

Preferably, the central processing unit chip 100 is further connected with the 433 module 800, and short-distance data transceiving is performed between the 433 module 800 and the central processing unit chip 100, and the module 800 is mainly used for ranging and sorting in short distance, so that the problem of insufficient accurate range measurement of AIR800 is solved, and the accuracy of data is improved.

The solar LED traffic sign lamp board control circuit provided by the embodiment adds the current self-checking function on each LED lamp string before the lamp is turned on, transmits the fault information to the monitoring center in time, increases the identification of the traffic lamp falling, and can transmit the traffic sign lamp to the monitoring center in time, so that the monitoring center can know the fault and maintenance information conveniently, the safety of the traffic sign lamp applied to the road is improved, and the maintenance is facilitated in time.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, the present invention can be modified or improved without departing from the principle of the present invention, and these modifications are all considered to be within the protection scope of the present invention.

Claims

1. A solar traffic sign lamp board control circuit, characterized by comprising: the intelligent LED automatic monitoring system comprises a central processing unit chip, wherein a lamp control circuit of an indicating lamp board, a power supply voltage regulating circuit, an LED self-checking circuit, a dumping protection circuit, a solar cell protection circuit and a data transmission module are electrically connected onto the central processing unit chip, the input end of the LED self-checking circuit is connected with the lamp control circuit, the output end of the LED self-checking circuit is connected onto the central processing unit chip, and the central processing unit chip is in communication connection with a remote monitoring center through the data transmission module.

2. The solar traffic sign control circuit of claim 1, wherein the LED self-test circuit comprises an operational amplifier, a non-inverting input terminal of the operational amplifier is connected to the lamp control circuit through a small-resistance resistor, an inverting input terminal of the operational amplifier is connected to the ground through a resistor having a resistance equal to that of the non-inverting input terminal, an output terminal of the operational amplifier is connected to the central processor chip, a high-resistance balancing resistor is connected between the output terminal and the inverting input terminal of the operational amplifier, and the resistance of the balancing resistor is more than 10 times that of the small resistor.

3. The solar traffic sign control circuit of claim 1, wherein the lamp control circuit comprises at least one LED lamp string, each lamp control circuit comprises an MOS (metal oxide semiconductor) tube used as a switch, the grid electrode of the MOS tube is connected to the central processing unit chip, the source electrode of the MOS tube is connected to the input end of the LED self-checking circuit, and the drain electrode of the MOS tube is connected to the LED lamp.

4. The solar traffic sign control circuit of claim 1, wherein the central processing chip is of a type STM32F103CBT 6.

5. The solar traffic sign lamp board control circuit according to claim 1, wherein the data transmission module comprises a wireless transceiver chip and a GPRS + GPS chip, the GPRS + GPS chip is connected with a SIM card, and the model of the GPRS + GPS chip is AIR 800.

6. The solar traffic sign lamp board control circuit according to claim 1, wherein the dumping protection circuit comprises a dumping inductive switch and a direction inductive switch, the positive electrodes of the dumping inductive switch and the direction inductive switch are electrically connected with the central processing unit chip, the negative electrodes of the dumping inductive switch and the direction inductive switch are connected to the ground, the dumping inductive switch and the direction inductive switch are normally open switches, and when the solar LED traffic sign lamp board is dumped, the dumping inductive switch and the direction inductive switch are closed.

7. The solar traffic sign lamp board control circuit according to claim 1, wherein a 433 module is further connected to the central processor chip, and short-distance data transmission and reception are performed between the 433 module and the central processor chip.