CN213991094U - Bluetooth solar street lamp control device and system with low-voltage input - Google Patents
Bluetooth solar street lamp control device and system with low-voltage input Download PDFInfo
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- CN213991094U CN213991094U CN202023294260.4U CN202023294260U CN213991094U CN 213991094 U CN213991094 U CN 213991094U CN 202023294260 U CN202023294260 U CN 202023294260U CN 213991094 U CN213991094 U CN 213991094U
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Abstract
The utility model discloses a bluetooth solar street lamp controlling means and system of low voltage input, include: the central control module is integrated with a Bluetooth communication unit, the Bluetooth communication unit receives a parameter read-write instruction sent by the mobile terminal through the external antenna, the solar power supply board is connected with a storage battery through the pulse width modulation charging module, the storage battery is connected with a load street lamp through the boost constant current module, and the central control module controls charging/discharging of the storage battery according to the collected voltage of the solar power supply board and the voltage of the storage battery; the DC-DC power supply module comprises a first power supply chip and a second power supply chip, wherein the input voltage of the first power supply chip is greater than or equal to 2V, and the output voltage of the second power supply chip is 3.3V. The utility model discloses a bluetooth solar street lamp control device input voltage of low-voltage input is low to 2V, and is with low costs, convenient to use.
Description
Technical Field
The utility model relates to a solar street lamp control technical field, in particular to bluetooth solar street lamp control device and system of low-voltage input.
Background
With the continuous destruction of ecological environment, resources on the earth are increasingly exhausted, and thus, various countries are forced to start research on new energy, wherein solar energy is favored by various countries as a new energy because it is inexhaustible, inexhaustible and pollution-free.
The street lamp is a main component part of urban lighting engineering, plays an important role and consumes a large amount of energy. The traditional street lamp is mainly a high-pressure sodium lamp, the power of one street lamp is about 100W-400W, and in a city, the electric energy consumed by only main roads, such as national roads, first-level roads, second-level roads and the like, is very huge every year. In order to solve the problem of high energy consumption of the street lamp, the solar street lamp and a solar street lamp control device produced by the solar street lamp are provided. The solar street lamp control device is used for coordinating the work of a solar cell panel, a storage battery and a load, is an important component in a photovoltaic system, and enables the whole solar photovoltaic system to operate efficiently and safely. Most of solar street lamp control devices in the market at present are 12V/24V systems, and most of battery units are lead-acid and colloid batteries. The lithium battery pack is difficult to be applied to the solar street lamp control device at present, and the reason is that the chemical characteristics of lithium metal are very active, so that the requirements on the environment for processing, storing and using the lithium metal are very high, and particularly in the new energy automobile industry, the lithium battery pack has more and more bad eliminated products and has great environmental pollution.
In addition, each traditional solar street lamp control device needs to be provided with a handheld remote controller separately, and parameters are issued and read from the solar street lamp control device through the remote controller. This is a time consuming and costly matter for both the manufacturer and the customer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bluetooth solar street lamp control device and system of low-voltage input for solve the higher and inconvenient problem of control of current solar street lamp control device input voltage.
In order to achieve the above object, the utility model provides a bluetooth solar street lamp control device of low-voltage input, include: a central control module, a DC-DC power supply module, a pulse width modulation charging module, a power management module, a boosting constant current module and an external antenna which are connected with the central control module, the central control module is integrated with a Bluetooth communication unit which receives parameter reading and writing instructions sent by the mobile terminal through the external antenna, the solar power supply board is connected with a storage battery through the pulse width modulation charging module, the storage battery is connected with a load street lamp through the boosting constant-current module, the power supply management module is used for collecting the voltage of the storage battery, the voltage of the load street lamp, the voltage of the solar power supply board, the charging current at the end of the storage battery and the discharging current at the end of the load street lamp, the central control module controls the charging/discharging of the storage battery according to the acquired voltage of the solar power supply board and the voltage of the storage battery;
the DC-DC power supply module comprises a first power chip and a second power chip, wherein the input end of the first power chip is connected with the voltage output end of the storage battery, the output end of the first power chip is connected with the input end of the second power chip, the output end of the second power chip is connected with the voltage input end of the central control module, the input voltage of the first power chip is greater than or equal to 2V, and the output voltage of the second power chip is 3.3V.
Preferably, the DC-DC power supply module further includes a low on-resistance P-channel power MOS transistor, a drain of the low on-resistance P-channel power MOS transistor is connected to the voltage output terminal of the storage battery, and a source of the low on-resistance P-channel power MOS transistor is connected to the input terminal of the first power supply chip.
Preferably, the pulse width modulation charging module includes a first N-channel power MOS transistor, a second N-channel power MOS transistor, and a charging current sampling resistor, a drain of the first N-channel power MOS transistor is connected to a negative electrode of the solar power supply board, a gate of the first N-channel power MOS transistor is connected to a gate of the second N-channel power MOS transistor and a first driving output terminal of the pulse width modulation driving circuit, a source of the first N-channel power MOS transistor is connected to a source of the second N-channel power MOS transistor and a second driving output terminal of the pulse width modulation driving circuit, a drain of the second N-channel power MOS transistor is connected to a negative electrode of the storage battery through the charging current sampling resistor, an output terminal of the first power chip is connected to a voltage input terminal of the pulse width modulation driving circuit, when the solar power supply board charges the storage battery, and the central control module adjusts output signals of a first drive output end and a second drive output end of the pulse width modulation drive circuit according to the charging current acquired by the charging current sampling resistor in real time so as to change pulse width modulation values of the first N-channel power MOS tube and the second N-channel power MOS tube.
Preferably, the boost constant-current module comprises a boost circuit and a constant-current control circuit, the positive electrode of the storage battery is connected with the positive electrode of the load street lamp through the boost circuit, the boost circuit comprises a winding inductor, a boost MOS (metal oxide semiconductor) tube, a diode and two output filter capacitors, the constant-current control circuit comprises a driving chip and a loop current detection resistor, the central control module controls the driving chip to generate a boost driving signal according to the voltage of the load street lamp so as to adjust the boost MOS tube, and generates a pulse modulation signal according to the current value detected by the loop current detection resistor so as to adjust the boost MOS tube.
Preferably, the current value detected by the loop current detection resistor is amplified by an operational amplifier according to a preset proportion and then sent to the central control module.
Preferably, the bluetooth solar street lamp control device with low voltage input further comprises a status indication module connected with the central control module, wherein the status indication module comprises a storage battery status indication lamp, a solar power supply board status indication lamp and a load street lamp status indication lamp
Preferably, the output voltage range of the storage battery to the load street lamp after passing through the boosting constant-current module is 9-30V, and the output current range is 0-2A.
Preferably, the main control chip of the central control module is PHY 6212.
Preferably, the external antenna is a 2.4G omnidirectional antenna.
On the other hand, the utility model also provides a bluetooth solar street lamp control system of low voltage input, including a plurality of the aforesaid bluetooth solar street lamp controlling means and mobile terminal of low voltage input, it is a plurality of the bluetooth solar street lamp controlling means of low voltage input constitutes wireless Mesh network, mobile terminal is simultaneously to a plurality of bluetooth solar street lamp controlling means of low voltage input sends parameter read-write command.
The utility model has the advantages of as follows:
the utility model discloses a bluetooth solar street lamp control device of low voltage input includes central control module, DC-DC power module, the module is charged in the pulse width modulation, power management module, the constant current module steps up, wherein central control module is integrated to have bluetooth communication unit, when solar energy power supply board has voltage daytime, solar energy power supply board adopts the PWM charge mode to charge for the battery, when solar energy power supply board does not have voltage evening, the load is opened, battery voltage reaches the operating voltage of load street lamp and carries out constant current output through the constant current module that steps up. The utility model discloses well integrated bluetooth communication function of central control module satisfies the cost requirement, and communication distance also satisfies the demand and does not receive the sunlight to influence, need not handheld remote controller like this, through the smart mobile phone operation of people hand one, more convenient, simple, nimble, practice thrift the cost. Additionally, the utility model discloses well battery output voltage is low to 2V, and single cluster lithium cell can supply power, has solved the higher problem of solar street lamp control device input voltage, further the cost is reduced.
Therefore, the utility model discloses a bluetooth solar street lamp control device of low-voltage input can be used to the direct drive LED street lamp, and the input voltage is low, and is small, and is with low costs, easily installs, and it is extremely convenient and intelligent degree high to use.
The utility model discloses a bluetooth solar street lamp control system of low voltage input carries out the network deployment to a plurality of controlling means through mobile terminal APP, carries out group control, single control to the controlling means in group, looks over controlling means's real-time parameter to and controlling means carries out parameter modification and firmware upgrading.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
FIG. 1 is a schematic diagram illustrating the construction of a low voltage input Bluetooth solar street light control device according to one exemplary embodiment;
FIG. 2 is a schematic circuit diagram illustrating a DC-DC power supply module of a low voltage input Bluetooth solar street light control apparatus according to one exemplary embodiment;
FIG. 3 is a schematic circuit diagram illustrating a pulse width modulation charging module of a low voltage input Bluetooth solar street light control apparatus according to an exemplary embodiment;
FIG. 4 is a schematic diagram illustrating a pulse width modulation drive circuit for a low voltage input Bluetooth solar street light control device in accordance with an exemplary embodiment;
FIG. 5 is a schematic diagram illustrating an operational amplifier circuit of a pulse width modulation module of a low voltage input Bluetooth solar street light control device in accordance with an exemplary embodiment;
FIG. 6 is a schematic diagram illustrating a boost circuit of a low voltage input Bluetooth solar street light control device in accordance with an exemplary embodiment;
FIG. 7 is a schematic diagram illustrating a constant current control circuit of a low voltage input Bluetooth solar street light control device in accordance with an exemplary embodiment;
FIG. 8 is a schematic circuit diagram illustrating an operational amplifier in the discharge loop of a low voltage input Bluetooth solar street light control device in accordance with an exemplary embodiment;
FIG. 9 is a schematic circuit diagram illustrating a status indicator module of a low voltage input Bluetooth solar street light control device in accordance with an exemplary embodiment;
FIG. 10 is a schematic circuit diagram illustrating a main control chip of a low voltage input Bluetooth solar street light control device according to an exemplary embodiment;
fig. 11 is a schematic diagram illustrating a low voltage input bluetooth solar street light control system according to an exemplary embodiment.
Description of reference numerals:
100-bluetooth solar street lamp control device of low-voltage input;
1-a central control module; 11-Bluetooth communication unit
2-pulse width modulation charging module; 3-a power management module;
4-a voltage boosting constant current module; a 5-DC-DC power supply module;
6-external antenna; 7-a status indication module;
200-a solar power supply panel; 300-a storage battery;
400-load street lamp; 500-mobile terminal.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments, but those skilled in the art should understand that the embodiments described below are only used for illustrating the present invention and should not be construed as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
The following will describe preferred embodiments of the present invention in detail with reference to examples. It should be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and substitutions may be made by those skilled in the art without departing from the spirit and scope of the invention, and all such modifications and substitutions are intended to be included within the scope of the claims.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
The invention will be further described with reference to the following drawings and examples:
in order to achieve the above objective, referring to the drawings, an embodiment of the present invention provides a bluetooth solar street lamp control device with low voltage input, which is used to solve the problem that the input voltage of the existing solar street lamp control device is high and inconvenient to control.
To achieve the above object, referring to fig. 1 and fig. 2, an embodiment of the present invention provides a bluetooth solar street lamp control device 100 with low voltage input, including: the central control module 1, the DC-DC power supply module 5, the pulse width modulation charging module 2, the power management module 3, the boosting constant current module 4 and the external antenna 6 which are connected with the central control module 1, the central control module 1 is integrated with the Bluetooth communication unit 11, the Bluetooth communication unit 11 receives a parameter reading and writing instruction sent by the mobile terminal 500 through the external antenna 6, the solar power supply panel 200 is connected with the storage battery 300 through the pulse width modulation charging module 2, the storage battery 300 is connected with the load street lamp 400 through the boosting constant current module 4, the power management module 3 is used for collecting the voltage of the storage battery 300 and the voltage of the load street lamp 400, the central control module 1 controls the charging/discharging of the storage battery 300 according to the collected voltage of the solar power supply panel 200 and the voltage of the storage battery 300;
the DC-DC power supply module 5 comprises a first power chip U1 and a second power chip U2, wherein the input end of the first power chip U1 is connected with the voltage output end of the storage battery 300, the output end of the first power chip U1 is connected with the input end of the second power chip U1, the output end of the second power chip U2 is connected with the voltage input end of the central control module 1, the input voltage of the first power chip U1 is greater than or equal to 2V, and the output voltage of the second power chip U2 is 3.3V.
It should be noted that, in this embodiment, the central control module integrates a bluetooth function therein, and a bluetooth Mesh low power consumption technology is adopted, the Mesh is based on a node connected to BLE, and the Mesh profile specification is defined by bluetooth SIG, and is based on a Flooding type during data transmission, and multiple broadcast data transmission (user defined packet) is possible. The wireless multi-hop network is a Mesh network, and the Mesh network technology is a novel wireless mobile communication technology based on IP access and is suitable for regional environment coverage and broadband high-speed wireless access. The wireless Mesh network has the advantages of high broadband speed and high spectrum efficiency based on the mutual cooperation and cooperation among a plurality of wireless access points distributed in a Mesh shape, and has the outstanding characteristics of dynamic self-organization, self-configuration, self-maintenance and the like.
In this embodiment, the main control chip of the central control module has a multi-bit AD channel, integrates a bluetooth communication function, samples the system voltage, and inputs the sampled system voltage to a control algorithm for calculation, and then outputs a control signal to the whole information. In addition, bluetooth Mesh low-power consumption technique can be adopted in this embodiment, accessible cell-phone APP networks controlling means, and communication distance can reach 70 meters, carries out group control, single control through cell-phone APP to the controlling means of group's internal, looks over controlling means's real-time parameter, carries out parameter modification to controlling means, realizes OTA upgrading.
It should be noted that, in the present embodiment, the pulse width modulation charging module (i.e., the PWM charging module) is used to control the solar power supply board to charge the storage battery according to a predetermined charging curve, so as to avoid the storage battery from being damaged due to over-discharge, over-charge, and over-voltage.
It should be noted that, in this embodiment, the voltage boosting constant current module is configured to output the voltage of the storage battery to the load street lamp at a constant voltage and a constant current through the voltage boosting circuit and the constant current control circuit.
It should be noted that, in this embodiment, the power management module includes a sampling circuit, for example: the device comprises a storage battery voltage sampling circuit, a load voltage sampling circuit, a photocell voltage sampling circuit (photocells are solar batteries), a discharging current sampling circuit, a charging current sampling circuit and an internal temperature sampling circuit. The method comprises the steps of judging whether to discharge or charge by collecting the voltage of a storage battery and the voltage of a photocell, and detecting and protecting the battery (the battery voltage is high, the charging is disconnected, the battery voltage is low, and the discharging is disconnected). Meanwhile, the load current is adjusted by issuing discharge current parameters through the mobile phone APP, and the current can be set according to various discharge mode time periods, so that intelligent operation is realized.
The utility model discloses bluetooth solar street lamp control device of low-voltage input includes central control module, DC-DC power module, the module is charged in the pulse width modulation, power management module, the constant current module steps up, wherein central control module is integrated to have bluetooth communication unit, this controlling means is a control solar energy power supply board, the controlling means of battery and load street lamp, daytime when solar energy power supply board has voltage, solar energy power supply board adopts the PWM charge mode to charge for the battery, the load street lamp is closed this moment, evening when solar energy power supply board does not have voltage, the load is opened, battery voltage reaches the operating voltage of load street lamp and carries out constant current output through the constant current module that steps up. The integrated bluetooth communication function of central control module in this embodiment satisfies the cost requirement, and communication distance also satisfies the demand and does not receive the sunlight to influence, need not handheld remote controller like this, through the smart mobile phone operation of people hand one, more convenient, simple, nimble, practice thrift the cost. In addition, in the DC-DC power supply module in this embodiment, the input voltage of the first power supply chip is greater than or equal to 2V, the output voltage of the second power supply chip is 3.3V, the output voltage of the storage battery is as low as 2V, and a single lithium battery can supply power, so that the problem of high input voltage of the solar street lamp control device is solved, and the cost is further reduced.
Therefore, the utility model discloses bluetooth solar street lamp control device of low-voltage input can be used to the direct drive LED street lamp, and is small, with low costs, easily installation, and it is extremely convenient and intelligent degree high to use.
According to the above scheme, further, as shown in fig. 2, the DC-DC power supply module 5 of the embodiment of the present invention further includes a low on-resistance P-channel power MOS transistor Q29, the drain of the low on-resistance P-channel power MOS transistor Q29 is connected to the voltage output end of the battery 300, and the source of the low on-resistance P-channel power MOS transistor Q29 is connected to the input end of the first power chip U1.
In this embodiment, the lowest voltage of the central control module is 2.5V, the operating voltage of the first power chip U1 is 2V, in order to ensure that the input voltage selects the MOS transistor Q29 with low turn-on voltage as the input for preventing reverse, the first power chip U1 outputs VDD (12V) as the driving voltage of the MOS transistor in the pwm driving circuit of the pwm module, the voltage of the driving chip in the discharge circuit of the boost constant current module, and the power supply voltage of the operational amplifier, and the second power chip U2 outputs VCC to supply power to the central control module.
According to the above solution, further, referring to fig. 3-5, the pwm charging module 2 of the embodiment of the present invention includes a first N-channel power MOS transistor Q1, a second N-channel power MOS transistor Q2, a MOS gate discharging resistor R15 and a charging current sampling resistor R20, wherein the drain of the first N-channel power MOS transistor Q1 is connected to the negative electrode of the solar panel 200, the gate of the first N-channel power MOS transistor Q1 is connected to the gate of the second N-channel power MOS transistor Q2, one end of the MOS gate discharging resistor R15 and the first driving output QG of the pwm driving circuit, the source of the first N-channel power MOS transistor Q1 is connected to the source of the second N-channel power MOS transistor Q2, the other end of the MOS gate discharging resistor R15 and the second driving output QG of the pwm driving circuit, the drain of the second N-channel power MOS transistor Q2 is connected to the negative electrode QS of the battery 300 through the charging current sampling resistor R20, the output end of the first power supply chip is connected to the voltage input end of the pwm driving circuit, and when the solar power supply panel 200 charges the battery 300, the central control module 1 adjusts output signals of the first driving output QG and the second driving output QS of the pwm driving circuit according to the charging current collected by the charging current sampling resistor R20 in real time, so as to change the pwm values of the first N-channel power MOS transistor Q1 and the second N-channel power MOS transistor Q2, and further change the magnitude of the charging current.
FIG. 4 is a pulse width modulation driving circuit of Q1/Q2, PWQG _ pv is controlled by the central control module, when PWQG _ pv is low, Q10 is not conducted, Q11 is conducted, VDD is output to QG, namely the driving voltage of Q1/Q2 MOS, and at the moment, the solar panel charges the storage battery; conversely, when PWQG _ pv is high, Q11 is not conducting and Q1/Q2 MOS tubes have no driving voltage, and the solar panel does not charge the battery. In this embodiment, the charging current is limited by changing PWQG _ PV during charging, a current signal I _ PV signal of the charging circuit is collected through the charging current sampling resistor R20, and is sent to the central control module through the operational amplifier circuit (shown in fig. 5), and the central control module processes the charging current value and uploads the charging current value to the mobile phone APP through the bluetooth function of the central control module.
According to the above scheme, further, see that fig. 6-8 shows, the utility model discloses a constant current module 4 steps up includes boost circuit and constant current control circuit, connect through boost circuit between the positive pole of battery 300 and load street lamp 400, boost circuit includes a wire winding inductance L3, a MOS pipe Q6 steps up, a diode D2 and two output filter electric capacity C1\ C2, constant current control circuit includes drive chip U5 and return circuit current detection resistance R22, central control module 1 produces the drive signal that steps up in order to adjust MOS pipe Q6 according to load street lamp 400's voltage control drive chip U5, and the current value that detects according to return circuit current detection resistance R22 produces the pulse modulation signal in order to adjust MOS pipe Q6 that steps up.
In this embodiment, the positive electrode of the storage battery is connected with the positive electrode of the load lamp panel through a Boost circuit (i.e., a Boost circuit), the Boost circuit mainly comprises a winding inductor L3, a Boost MOS transistor Q6, a schottky diode D2, and output filter capacitors C1 and C2, and the output voltage can be higher than the input voltage through the Boost circuit, so that the purpose of boosting is achieved. The central control module can automatically adjust the boosting driving signal of the boosting MOS tube Q6 by identifying the number of the load circuit lamp strings, and the boosting driving signal of the Q6 is obtained by controlling the driving chip U5 by the central control module, so that the output voltage is stable, and the load circuit lamp can not flicker. R22 is a loop current detection resistor of the discharge loop, a current detection signal Iload _ cs is transmitted to the central control module, and the central control module changes a PWQ3G _ boost signal by detecting the size of the signal, so that the duty ratio of a PWM wave is changed to limit the output current, and the purpose of outputting constant current is achieved.
According to the above scheme, further, as shown in fig. 8, the current value detected by the loop current detection resistor R22 according to the embodiment of the present invention is amplified according to the preset ratio by the operational amplifier and then sent to the central control module. In this embodiment, the current detection signal Iload _ cs is transmitted to the central control module 1 through the operational amplifier, which amplifies the signal Iload according to a predetermined ratio.
According to the above scheme, further, as shown in fig. 9, the bluetooth solar street lamp control device 100 with low voltage input of the embodiment of the present invention further includes a status indication module 7 connected to the central control module 1, and the status indication module 7 includes a storage battery status indication lamp, a solar power supply board status indication lamp and a load street lamp status indication lamp. In the embodiment, the working state of the control device can be clearly judged by the storage battery state indicating lamp and the solar power supply board state indicating lamp.
According to above-mentioned scheme, it is further, the utility model discloses battery 300 is 9V ~ 30V to the output voltage scope of load street lamp 400 behind the constant current module 4 that steps up, and the output current scope is 0A ~ 2A.
According to the above technical scheme, furthermore, the utility model discloses battery 300 is single cluster lithium cell. Optionally, in this embodiment, the storage battery 300 is a single-string ternary lithium battery or a single-string lithium iron phosphate battery.
According to the above solution, further, as shown in fig. 10, the main control chip of the central control module according to the embodiment of the present invention is PHY 6212. The utility model discloses bluetooth solar street lamp controlling means's of low-voltage input main control chip MCU integrated bluetooth communication part is as the main chip by singlechip PHY6212 chip, and it self has 6 AD passageways, realizes that system's voltage sampling and leading-in to control algorithm calculate, and controlling means's real-time parameter is looked over to accessible cell-phone APP, carries out parameter modification, OTA upgrading to controlling means.
According to above-mentioned scheme, it is further, the utility model provides an external antenna 6 is 2.4G omnidirectional antenna. In the embodiment, the external antenna 6 is a 2.4G omnidirectional antenna, so that the communication is effective in all directions, a circuit board of the external antenna adopts a 2-layer PCB, and a radio frequency antenna is selectively applied to the ground in a large area.
To sum up, the utility model discloses bluetooth solar street lamp controlling means of low-voltage input has following advantage:
1. the automatic detection device has a self-detection function of an initial power-on system, and can automatically detect the accuracy of a wiring sequence;
2. the storage battery voltage is as low as 2V, a common lithium iron phosphate single-section battery core can supply power, the load voltage is higher than the input voltage, the string number of the lamp beads is adjustable, a control constant current design is adopted, an LED driving power supply can be omitted, charging and discharging management of the solar storage battery is integrated, constant current driving of an LED light source and networking communication functions are integrated, the size is small, the appearance is attractive, the reliability is high, the failure rate is low, and the cost is low.
3. The built-in temperature sensor can automatically adjust the load power according to the ambient temperature, and can effectively increase the lighting time of the solar street lamp;
IP67 waterproof grade, excellent heat balance design and natural air cooling, can be used in various severe environments;
5. the intelligent control mode is suitable for the lithium battery, and can automatically adjust the charge-discharge strategy according to the condition of the storage battery;
6. perfect electronic protection function, load overcurrent, short circuit protection, battery overcharge protection, battery low-voltage protection and the like;
7. the BLE 5.0Mesh technology is adopted, so that low-voltage input, low power consumption and high reliability are realized.
And 8, the OTA upgrading function can be used for carrying out OTA upgrading on the firmware of the control device, and the product can be continuously maintained by a manufacturer after being sold, so that the function of the control device is ensured to be advanced with time, and the time and cost after sale are greatly reduced.
On the other hand, see that fig. 11 shows, the embodiment of the utility model provides a bluetooth solar street lamp control system of low voltage input still, including a plurality of above-mentioned embodiments bluetooth solar street lamp controlling means and the mobile terminal of low voltage input, the bluetooth solar street lamp controlling means of a plurality of low voltage inputs constitutes wireless Mesh network, and the mobile terminal is simultaneously to a plurality of bluetooth solar street lamp controlling means of low voltage input sends parameter reading and writing instruction.
It should be noted that, in this embodiment, the mobile terminal may be a mobile phone or a pad, and is not specifically limited herein.
The utility model discloses bluetooth solar street lamp control system of low-voltage input carries out the network deployment to a plurality of controlling means through mobile terminal APP, carries out group control, single control to the controlling means in the group, looks over controlling means's real-time parameter to and controlling means carries out parameter modification and firmware upgrading.
Claims (10)
1. A bluetooth solar street lamp controlling means of low voltage input characterized by that includes: a central control module, a DC-DC power supply module, a pulse width modulation charging module, a power management module, a boosting constant current module and an external antenna which are connected with the central control module, the central control module is integrated with a Bluetooth communication unit which receives parameter reading and writing instructions sent by the mobile terminal through the external antenna, the solar power supply board is connected with the storage battery through the pulse width modulation charging module, the storage battery is connected with a load street lamp through the boosting constant-current module, the power supply management module is used for collecting the voltage of the storage battery, the voltage of the load street lamp, the voltage of the solar power supply board, the charging current at the end of the storage battery and the discharging current at the end of the load street lamp, the central control module controls the charging/discharging of the storage battery according to the acquired voltage of the solar power supply board and the voltage of the storage battery;
the DC-DC power supply module comprises a first power chip and a second power chip, wherein the input end of the first power chip is connected with the voltage output end of the storage battery, the output end of the first power chip is connected with the input end of the second power chip, the output end of the second power chip is connected with the voltage input end of the central control module, the input voltage of the first power chip is greater than or equal to 2V, and the output voltage of the second power chip is 3.3V.
2. The control device of claim 1, wherein the DC-DC power supply module further comprises a low on-resistance P-channel power MOS transistor, a drain of the low on-resistance P-channel power MOS transistor is connected to the voltage output terminal of the battery, and a source of the low on-resistance P-channel power MOS transistor is connected to the input terminal of the first power chip.
3. The Bluetooth solar street lamp control device with low voltage input according to claim 1, wherein the PWM charging module comprises a first N-channel power MOS transistor, a second N-channel power MOS transistor and a charging current sampling resistor, a drain of the first N-channel power MOS transistor is connected to the negative electrode of the solar power supply board, a gate of the first N-channel power MOS transistor is connected to a gate of the second N-channel power MOS transistor and a first driving output terminal of a PWM driving circuit, a source of the first N-channel power MOS transistor is connected to a source of the second N-channel power MOS transistor and a second driving output terminal of the PWM driving circuit, a drain of the second N-channel power MOS transistor is connected to the negative electrode of the battery through the charging current sampling resistor, an output terminal of the first power chip is connected to a voltage input terminal of the PWM driving circuit, when the solar power supply board charges the storage battery, the central control module adjusts output signals of a first driving output end and a second driving output end of the pulse width modulation driving circuit according to the charging current acquired by the charging current sampling resistor in real time so as to change pulse width modulation values of the first N-channel power MOS tube and the second N-channel power MOS tube.
4. The Bluetooth solar street lamp control device with low voltage input according to claim 1, wherein the boost constant current module comprises a boost circuit and a constant current control circuit, the positive electrode of the storage battery is connected with the positive electrode of the load street lamp through the boost circuit, the boost circuit comprises a winding inductor, a boost MOS (metal oxide semiconductor) tube, a diode and two output filter capacitors, the constant current control circuit comprises a driving chip and a loop current detection resistor, the central control module controls the driving chip to generate a boost driving signal according to the voltage of the load street lamp so as to adjust the boost MOS tube, and generates a pulse modulation signal according to the current value detected by the loop current detection resistor so as to adjust the boost MOS tube.
5. The Bluetooth solar street lamp control device with low voltage input according to claim 4, wherein the current value detected by the loop current detection resistor is amplified by an operational amplifier according to a preset proportion and then sent to the central control module.
6. The BLUETOOTH low voltage input solar street light control of claim 1, further comprising a status indication module connected to the central control module, the status indication module comprising a battery status indicator light, a solar power panel status indicator light, and a load street light status indicator light.
7. The Bluetooth solar street lamp control device with low voltage input according to any one of claims 1 to 6, wherein the output voltage range of the storage battery to the load street lamp after passing through the voltage boosting constant current module is 9V-30V, and the output current range is 0A-2A.
8. The Bluetooth low voltage input solar street light control device as claimed in any one of the claims 1 to 6, wherein the main control chip of the central control module is PHY 6212.
9. The low voltage input Bluetooth solar street light control device as claimed in any one of claims 1-6, wherein the external antenna is a 2.4G omnidirectional antenna.
10. A low-voltage input Bluetooth solar street lamp control system is characterized by comprising a plurality of low-voltage input Bluetooth solar street lamp control devices according to any one of claims 1-9 and a mobile terminal, wherein the plurality of low-voltage input Bluetooth solar street lamp control devices form a wireless Mesh network, and the mobile terminal simultaneously sends parameter reading and writing instructions to the plurality of low-voltage input Bluetooth solar street lamp control devices.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023294260.4U CN213991094U (en) | 2020-12-30 | 2020-12-30 | Bluetooth solar street lamp control device and system with low-voltage input |
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| CN202023294260.4U CN213991094U (en) | 2020-12-30 | 2020-12-30 | Bluetooth solar street lamp control device and system with low-voltage input |
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| CN213991094U true CN213991094U (en) | 2021-08-17 |
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| CN202023294260.4U Active CN213991094U (en) | 2020-12-30 | 2020-12-30 | Bluetooth solar street lamp control device and system with low-voltage input |
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