CN112412133A - Stereo garage with light communication-based anti-collision lamp - Google Patents
Stereo garage with light communication-based anti-collision lamp Download PDFInfo
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- CN112412133A CN112412133A CN202011143477.7A CN202011143477A CN112412133A CN 112412133 A CN112412133 A CN 112412133A CN 202011143477 A CN202011143477 A CN 202011143477A CN 112412133 A CN112412133 A CN 112412133A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/42—Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices, monitoring and operating schemes; centering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a stereo garage with an optical communication anti-collision lamp, relates to the technical field of stereo garage circuits, and solves the problems that in the prior art, the rechargeable battery of stereo garage communication equipment in a state that the electric quantity of the rechargeable battery is completely exhausted is recharged to be invalid, the stereo garage communication is easily interfered, an anti-collision system cannot absorb energy to keep running, and the internal positioning of the stereo garage cannot be realized. The system mainly comprises a transfer mobile anti-collision unit, at least two self-charging Li-Fi lamp communication modules are arranged; the fixed anti-collision detection unit is at least provided with two self-charging type Li-Fi lamp communication modules; the transfer mobile anti-collision unit or the fixed anti-collision detection unit transmits an anti-collision signal through the self-charging Li-Fi lamp communication module, the transfer mobile anti-collision unit receives the anti-collision signal output by the self-charging Li-Fi lamp communication module, and the transfer mobile anti-collision unit selectively displaces corresponding to the anti-collision signal.
Description
Technical Field
The invention relates to the technical field of stereo garage circuits, in particular to a stereo garage with an optical communication-based anti-collision lamp.
Background
Photovoltaic panels are mainly composed of semiconductor diodes, and are capable of converting sunlight into electrical energy, and their power conversion efficiency affects many factors, such as optical density, temperature, and incident direction. Photovoltaic systems using photovoltaic panels generally utilize inverters to convert direct current output from the photovoltaic panels into alternating current, which is then connected to a power grid for use. At present, photovoltaic panels in photovoltaic systems are all based on silicon, and the power conversion efficiency can reach about 18%. The existing mobile equipment charging can be normally carried out only by using a charging adapter and the mobile equipment which is not completely powered off in a combined mode, according to different mobile equipment, the charging voltage is generally 5V to 12V, and the charging current is generally 250mA to 2000 mA. According to the output characteristics of the current photovoltaic panel, the power of the photovoltaic panel can meet the requirement of the charging power of the battery of the mobile equipment. Meanwhile, with the technical progress of military or civil electronic equipment (GPS, satellite phones, etc.), especially the progress of mobile communication electronic equipment, a single soldier or an individual can obtain communication guarantee even if the soldier or the individual is involved in the field for a long time, but all of them need to be supported by a battery, however, in the field without a mains supply charging source, the situation that the battery of the electronic equipment is completely exhausted is inevitable, once the situation occurs, the electronic equipment becomes a failure state that the battery cannot be normally charged even if the mains supply charging source or the solar charging source is connected, the failure state is not physical structure damage, but the external battery can be allowed to be charged only by awakening the intelligent charging circuit for managing the battery charging by using the remaining charge, and the current solution is to use a special device to force the intelligent charging circuit to awaken the battery again. In more aspects, regardless of military or civil applications, it is shown that a full battery state charging circuit with high power conversion efficiency or any real state of charge (especially 0%, completely depleted state) direct-charging solar cell is needed, and the application of the circuit or the cell in the technical field with high reliability requirement, such as a stereo parking garage, will greatly improve the working time of equipment.
In addition, how stereo garage collision avoidance system can not cut off the power and continuously operate will also be demand concentration point, and present passive equipment, most belong to and use microstrip antenna to absorb radio energy, can only export very low power, be not enough to keep collision avoidance system's normal operating, current collision avoidance system framework also can not adapt to the communication structure of other energy sources.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a stereo garage with an optical communication anti-collision lamp, and solves the problems that in the prior art, the rechargeable battery of stereo garage communication equipment in the state of completely exhausted electric quantity of the rechargeable battery is not recharged to be invalid, the stereo garage communication is easily interfered, an anti-collision system cannot absorb energy to keep running, and the internal positioning of the stereo garage cannot be realized.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a stereo garage with a light communication based collision avoidance light, comprising: the transfer mobile anti-collision unit is arranged on mobile equipment in the stereo garage and is at least provided with two self-charging type Li-Fi lamp communication modules; the fixed anti-collision detection unit is arranged at a detection point of the stereo garage and is at least provided with two self-charging type Li-Fi lamp communication modules; the transfer mobile anti-collision unit or the fixed anti-collision detection unit transmits an anti-collision signal through the self-charging Li-Fi lamp communication module, the transfer mobile anti-collision unit receives the anti-collision signal output by the self-charging Li-Fi lamp communication module, and the transfer mobile anti-collision unit selectively displaces corresponding to the anti-collision signal.
A self-charging Li-Fi lamp communication module, comprising: a photovoltaic unit and a rechargeable battery; the oscillation bootstrap drive circuit receives the current output by the photovoltaic unit and oscillates and outputs a drive current to the rechargeable battery; a Li-Fi communication module; when the electric quantity is higher than a preset electric quantity threshold value, the rechargeable battery outputs driving power to the Li-Fi communication module.
Drawings
Fig. 1 is a schematic diagram of a transit mobile collision avoidance unit path with a self-charging Li-Fi light communication module in accordance with some embodiments of the present invention;
FIG. 2 is a schematic diagram of a single-pulse dual-signature optical communication signal in accordance with some embodiments of the present invention;
FIG. 3 is a block diagram of the present invention in some embodiments;
FIG. 4 is a schematic diagram of an oscillating bootstrap driver circuit in accordance with some embodiments of the present invention;
FIG. 5 is a circuit schematic of the present invention in some embodiments;
fig. 6 is a schematic diagram of a down-conversion power curve according to some embodiments of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The invention is further described below with reference to the accompanying drawings:
example 1
A stereo garage with a light communication based collision avoidance light, comprising:
the transfer mobile anti-collision unit is arranged on mobile equipment in the stereo garage and is at least provided with two self-charging type Li-Fi lamp communication modules;
the fixed anti-collision detection unit is arranged at a detection point of the stereo garage and is at least provided with two self-charging type Li-Fi lamp communication modules;
the transfer mobile anti-collision unit or the fixed anti-collision detection unit transmits an anti-collision signal through the self-charging Li-Fi lamp communication module, the transfer mobile anti-collision unit receives the anti-collision signal output by the self-charging Li-Fi lamp communication module, and the transfer mobile anti-collision unit selectively displaces corresponding to the anti-collision signal.
In the scheme, the self-charging Li-Fi lamp communication module transmits and/or receives the anti-collision signal and the communication signal simultaneously in a single pulse.
In the above scheme, the transfer mobile collision avoidance unit includes a first processing unit, which is used for encoding, mobile guidance, signal driving, and information interaction, and controls the self-charging type Li-Fi lamp communication module to transmit collision avoidance signals and communication signals simultaneously in a single pulse, or to receive and synchronously demodulate collision avoidance signals and communication signals from the other self-charging type Li-Fi lamp communication modules.
In the above scheme, the fixed collision avoidance detection unit includes a second processing unit, which is used for encoding, signal driving, and information interaction, and controls the self-charging type Li-Fi lamp communication module to send a collision avoidance signal and a communication signal simultaneously in a single pulse, or to receive and synchronously demodulate collision avoidance signals and communication signals from the other self-charging type Li-Fi lamp communication modules.
In the above scheme, the anti-collision device further comprises a central processing unit which is provided with a deep learning chip architecture and is connected with the fixed anti-collision detection unit.
The purpose of installing two self-charging type Li-Fi lamp communication modules is to fundamentally overcome the problem that the position of a transfer mobile collision avoidance unit or a fixed collision avoidance detection unit relative to the transfer mobile collision avoidance unit cannot be determined when the transfer mobile collision avoidance unit or the fixed collision avoidance detection unit is installed one by one.
In the above scheme, the central processing unit collects the collision avoidance signal which causes the transfer mobile collision avoidance unit to generate displacement, correspondingly records the position of the collision avoidance signal relative to the position of the fixed collision avoidance detection unit in the stereo garage, and forms a collision avoidance signal position sample to complete deep learning to obtain an updated transfer mobile collision avoidance unit operation path.
In the scheme, the central processing unit sends out a communication signal corresponding to the updated running path through the self-charging type Li-Fi lamp communication module of the fixed anti-collision detection unit.
In the above solution, the self-charging Li-Fi lamp communication module includes:
an LED driver: the signal input end of the three-dimensional garage is connected with a controller of the three-dimensional garage through a transmission bus, and the power supply input end of the three-dimensional garage is connected with a rechargeable battery V1;
LED: receiving a control signal of the LED driver, and emitting an optical signal according to an electric signal specific sequence mode;
a PIN photodiode: receiving the optical signal and converting the optical signal into an electric signal;
a transimpedance amplifier: the control system is connected with a controller of the stereo garage through a transmission bus, receives an electric signal of the PIN photodiode and outputs the electric signal to the controller of the stereo garage;
the LED driver and the LED are used as a signal transmitting module of a self-charging type Li-Fi lamp communication module, and the PIN photodiode and the trans-impedance amplifier are used as a signal receiving module of the self-charging type Li-Fi lamp communication module.
As shown in fig. 1, the collision avoidance signal can be divided into: stereo garage equipment anticollision signal, unobstructed environment anticollision signal, the external anti-collision signal of reflection of light body and the external light-absorbing body anticollision signal relative to stereo garage equipment, stereo garage equipment includes that the transfer removes anticollision unit M and fixed anticollision detecting element F, and F _ N is north fixed anticollision detecting element.
Before the first processing unit and the second processing unit in the stereo garage send out the anti-collision signals through the self-charging type Li-Fi lamp communication module, the MAC addresses of the first processing unit and the second processing unit serve as signatures of the signals, and the anti-collision signals with characteristics are sent out through the self-charging type Li-Fi lamp communication module after the MAC addresses are coded.
The first processing unit, the second processing unit and the central processing unit judge whether the received single-pulse internal collision avoidance signal has an MAC address signature or not, if so, the processing unit starts to broadcast the stereo garage equipment, and if not, the processing unit starts to broadcast an external reflector collision avoidance signal, the processing unit starts to broadcast an obstacle which belongs to the external obstacle, and if the stereo garage equipment exists, a plurality of transfer mobile collision avoidance units (such as intelligent trailers) which run together possibly can be adopted, so that the displacement of the transfer mobile collision avoidance unit which receives the stereo garage equipment collision avoidance signal cannot be large, and the external obstacle can take large displacement; the processing unit does not receive the anti-collision signal within a certain time and does not belong to a smooth environment anti-collision signal, and the processing unit can start broadcasting the obstacle which is located at the processing unit and belongs to an external light absorption body obstacle.
Referring to fig. 2, a configuration of a brand-new local field single pulse dual-feature optical communication signal on a transfer mobile collision avoidance unit or a fixed collision avoidance detection unit is shown, the optical density of emission and reception of the stereo garage equipment is uniform, and a signature area contains various communication signals.
Example 2
As in fig. 3, the photovoltaic unit PVP and the rechargeable battery V1; the oscillation bootstrap drive circuit BOC receives the current output by the photovoltaic unit PVP and oscillates and outputs a drive current to the rechargeable battery V1; a power tracking control circuit receiving said current output by the photovoltaic unit PVP and selectively outputting an enhanced drive current to the rechargeable battery V1.
In the above scheme, the photovoltaic unit PVP includes a folding photovoltaic panel.
In the scheme, the rechargeable battery V1 comprises a mobile intelligent terminal battery with the real electric quantity of 0% -100%.
In the above solution, the oscillation bootstrap driving circuit BOC includes: the charging circuit comprises a transformer, a transistor and a flyback rectifying diode, wherein the transistor forms an oscillation feedback loop by connecting a primary winding and a secondary winding of the transformer, the flyback rectifying diode is periodically conducted by the oscillation feedback loop, and the rechargeable battery V1 is charged by the conducted flyback rectifying diode.
In the above solution, the oscillation bootstrap driving circuit BOC includes:
one end of the first capacitor C1 is connected with the output end of the PVP and the other end is grounded;
a first inductance L1 and a second inductance L2;
a first transformer T1 having one end of the primary winding p connected to the pv cell PVP output terminal through a first inductor L1 and one end of the secondary winding s connected to the pv cell PVP output terminal through a second inductor L2;
a first transistor Q1, having a collector connected to the other end of the primary winding p of the first transformer T1, a base connected to the other end of the secondary winding s of the first transformer T1, and an emitter grounded;
a first flyback rectifier diode D1 having a high potential terminal connected to the collector of the first transistor Q1 and a low potential terminal connected to the rechargeable battery V1;
a zener diode D2 having its high electrode connected to ground and its low electrode connected to the base of the first transistor Q1;
one end of the second capacitor C2 is connected to the low potential end of the first flyback rectifying diode D1, and the other end is grounded.
As shown in fig. 4, the first transistor Q1 is selected as FZT851A, the first flyback rectifier diode D1 is selected as 1N5819, the first transformer T1 has a coupling coefficient of 0.5, the first capacitor C1 is 100 μ F, the second capacitor C2 is 10 μ F, the first inductor L1 is 6 μ H, the second inductor L2 is 2 μ H, the zener diode D2 may be of the same type as the first flyback rectifier diode D1, the first capacitor C1 and the second capacitor C2 are filter capacitors, the first inductor L1 and the second inductor L2 can increase the efficiency of the first transformer T1 and provide a filtering effect, the zener diode D2 is optional, but the switching efficiency of the transistor after being used is higher; the oscillating bootstrap driver circuit BOC in the optimal state can be turned on only with 0.002 watts of electric power output from the photovoltaic unit PVP, and can achieve a conversion efficiency of over 50%, whereas a general smart charging circuit or a charging circuit of the smart device itself requires about 100 milliwatts of power to turn on.
When the photovoltaic unit PVP generates a weak voltage, for example 0.45V, which is applied to the base and emitter of the first transistor Q1 through the secondary winding s of the first transformer T1, although it is still low, it biases the first transistor Q1 to the linear region; the first transformer T1 now acts as a feedback loop for the oscillating bootstrap driver circuit BOC, and once the first transistor Q1 is biased to the linear region, the first transistor Q1 starts to generate a voltage gain, which will now be larger than normal, because the collector of the first transistor Q1 is connected with an inductor and at a critical turn-on moment. Then, after the first transistor Q1 is turned on, the collector voltage is pulled down to near zero, the primary winding p of the first transformer T1 connected to the collector of the first transistor Q1 is rapidly charged, and when the primary winding p of the first transformer T1 continues to be rapidly charged until its current drawing capability exceeds the driving capability of the first transistor Q1, the base voltage of the first transistor Q1 rises due to the common emitter reverse conduction effect (H) of the transistors (H _ T _ re Parameter), the base voltage of the final first transistor Q1 continues to riseCausing the first transistor Q1 to begin to tend to the off-state while also causing the first transistor Q1 to begin to tend to the off-state due to both the voltage decrease at the secondary winding s of the first transformer T1 and the voltage decrease of the photovoltaic cell PVP. Then, in the critical interval when the first transistor Q1 is going to turn off, the collector current of the first transistor Q1 (because of the large charge accumulation in the coil to which it is connected) will start to decrease slightly by Δ δ, and this decrease Δ δ will cause the potential point β voltage at the collector to rise sharply, and once the first transistor Q1 turns off, the primary winding p (potential point β) at the collector of the first transistor Q1 will start to discharge after the potential point β voltage rises to a voltage sufficient to turn on the first flyback rectifier diode D1, and the charging battery V1 is charged through the turned on first flyback rectifier diode D1. In this case, the potential point β voltage immediately turns off the first transistor Q1 by the feedback of the first transformer T1 whenever a slight increase in voltage occurs. After the primary winding p is discharged, the first flyback rectifying diode D1 is turned off, the first transformer T1 returns to normal, the base and emitter of the first transistor Q1 enter the bias again, and the next cycle begins. The output principle of the bootstrap driving circuit BOC can be an analog oscillator output principle.
It should be noted that the lowest output voltage of the photovoltaic unit PVP (which is just enough to enable the oscillation bootstrap driving circuit BOC to operate normally) is 0.45V-0.6V (light is weak), the reason why the low voltage can be used for triggering is that the photovoltaic unit PVP is in an idle state when the oscillation bootstrap driving circuit BOC is not triggered, the output voltage of the photovoltaic unit PVP is higher than 0.6V, and the voltage value of the FZT851A transistor Q1 entering the linear region only needs about 0.5V, and the required operating voltage after the oscillation starts only needs 0.3V, the photovoltaic unit PVP enables the oscillation bootstrap driving circuit BOC to perform self-start, and this process does not need to wake up an additional control circuit, which is why the failure problem when the true electric quantity of electricity is exhausted by 0% can be overcome, and is the essence that the scheme can perform normal charging. This phase may be referred to as the low voltage self-oscillating charging phase. The frequency range of the phase is affected by the ambient light, typically 20KHz to 200KHz, and can be varied by adjusting the parameters of the first inductor L1 and the second inductor L2.
In the scheme, the micro-transformer is included, and the coupling coefficient of the micro-transformer is smaller than 1.
In the above solution, the power tracking control circuit includes:
the controller is awakened by the current which is output by the photovoltaic unit PVP and is higher than the working threshold of the controller;
the voltage detection circuit MPPL3 periodically detects the current magnitude driven to the rechargeable battery V1 by the oscillation bootstrap drive circuit BOC;
a first power tracking driver MPPL1 for selectively turning off the oscillation output of the oscillation bootstrap driver BOC;
the second power tracking driving circuit MPPL2 selectively forms an active rectifying circuit with the oscillation bootstrap driving circuit BOC;
the controller is characterized in that the controller closes the oscillation output of the oscillation bootstrap driving circuit BOC through the first power tracking driving circuit MPPL1 when the current detected by the voltage detection circuit MPPL3 is larger than a first preset threshold value, and synchronously controls the first power tracking driving circuit MPPL1 and the oscillation bootstrap driving circuit BOC to form a high-efficiency oscillation output, the controller also controls the second power tracking driving circuit MPPL2 and the oscillation bootstrap driving circuit BOC to form an active rectifying circuit when the current detected by the voltage detection circuit MPPL3 corresponding to the high-efficiency oscillation output is larger than a second preset threshold value larger than the first preset threshold value, and the active rectifying circuit outputs an enhanced driving current to the rechargeable battery V1.
The voltage detection circuit MPPL3 comprises:
a first resistor R4 connected in series with the rechargeable battery V1;
an amplifier U9A, the non-inverting input terminal of which is connected with the high potential terminal of the first resistor R4;
a first inverter U10, the input end of which is connected with the output end of the amplifier U9A;
a second resistor R6, having one end connected to the output end of the first inverter U10 and the other end connected to the inverting input end of the amplifier U9A;
the first filter capacitor C8 is connected in parallel with the second resistor R6;
a third resistor R7, one end of which is connected with the low potential end of the second resistor R6 and the other end of which is grounded;
one end of the bias capacitor C6 is connected with the bias voltage input end of the amplifier U9A, and the other end of the bias capacitor C6 is grounded;
a fourth resistor R5, having one end connected to the output end of the first inverter U10 and the other end as a voltage feedback signal V corresponding to the current level of the rechargeable battery V1fbAn output end;
and one end of the second filter capacitor C7 is connected to the low potential end of the fourth resistor R5, and the other end is grounded.
The second power tracking driving circuit MPPL2 includes:
a second inverter U5, the input terminal of which receives the first driving signal TC _ High of the controller;
a fifth resistor R3, one end of which is connected to the input end of the second inverter U5 and the other end of which is grounded;
a first inverter group U8, the input end of which is connected with the output end of the second inverter U5;
a first power transistor Q3, having a gate connected to the output terminal of the first inverter group U8, a source connected to the low voltage terminal of the first flyback rectifier diode D1, and a drain connected to the high voltage terminal of the first flyback rectifier diode D1.
The first power tracking driving circuit MPPL1 includes:
a third inverter U1, the input terminal of which receives the second driving signal TC _ Low of the controller;
a sixth resistor R2, one end of which is connected to the input end of the third inverter U1 and the other end of which is grounded;
the input end of the second inverter group U4 is connected with the output end of the third inverter U1;
a second power transistor Q4, having a gate connected to the output terminal of the second inverter group U4, a drain connected to the high voltage terminal of the first flyback rectifier diode D1, and a source grounded;
the oscillator also comprises a switch transistor Q2 for turning off the oscillation output of the oscillation bootstrap drive circuit BOC, the gate of the switch transistor Q2 receives the enable signal ENC of the controller, the drain of the switch transistor Q1 is connected with the base of the first transistor Q1, and the source of the switch transistor Q2 is grounded. Fig. 5 also adds some further resistors and capacitors, such as R1 and C4, which are optional, but are better positioned.
Periodically, when the output of the photovoltaic unit PVP gradually increases and the electric quantity of the rechargeable battery V1 also gradually increases, specifically, after the electric quantity exceeds 210 mw, the controller outputs the enable signal ENC, the base voltage of the first transistor Q1 is always in the vicinity of zero by using the switching transistor Q2, the controller outputs the pulse width modulated second driving signal TC _ Low, the second power transistor Q4 is controlled after the driving performance is enhanced by using the third inverter U1 and the second inverter group U4, the second power transistor Q4 becomes a switch for controlling the output of the first transformer T1, so that the first flyback rectifier diode D1 can be turned on to continue inputting the current to the rechargeable battery, and the period may be referred to as a High-efficiency oscillation output period, and the period is to control the second power tracking driving circuit MPPL2 to be in a sleep state by using the first driving signal TC _ High; when the output of the photovoltaic unit PVP is gradually higher and the charge of the rechargeable battery V1 is gradually higher, specifically, the first flyback diode D1 is continuously conducted, the maximum loss of the whole circuit is caused by the loss of the first flyback diode D1, active rectification is performed through the first power transistor Q3, the circuit loss at this time can be fundamentally reduced, the controller outputs the enable signal ENC, the base voltage of the first transistor Q1 is always near zero through the switching transistor Q2, the controller outputs the pulse width modulated second driving signal TC _ Low, the second power transistor Q4 is controlled after the driving performance is enhanced through the third inverter U1 and the second inverter group U4, the second power transistor Q4 is to be a switch for controlling the output of the first transformer T1, so that the first flyback diode D1 can be conducted, and the controller further activates the second power tracking driving circuit MPPL2 through the first driving signal TC _ High, the first power transistor Q3 and the first flyback rectifier diode D1 form an active rectifier, and this phase may be referred to as a low-frequency high-current charging phase; the high-efficiency oscillation output stage and the low-frequency high-current charging stage, the first transformer T1 is kept relatively constant and is always not zero power.
When the processing device and the logic circuit wake up, the output of the photovoltaic unit PVP exceeds 100 mw already, because below this power value, the flyback function cannot be realized in reality by the controller, the first power tracking driving circuit MPPL1 and the second power tracking driving circuit MPPL2, but the oscillating bootstrap driving circuit BOC is not so limited, and the charging process can be started as long as the output of the photovoltaic unit PVP exceeds 0.4V; the conversion efficiency range of the oscillation bootstrap driving circuit BOC is approximately 55% to 75%, when the photovoltaic unit PVP can normally output relatively large power, the controller, the first power tracking driving circuit MPPL1 and the second power tracking driving circuit MPPL2 are used for power tracking charging, the conversion efficiency of the circuit in the scheme can reach 95%, at least 90% can be realized, and the control of the charging process in stages is very significant; for example, when the photovoltaic unit PVP can output about 200 milliwatts, the conventional intelligent charging circuit needs about 100 milliwatts to operate normally, and under 90% conversion efficiency, the net power output is only about 80 milliwatts, while the conversion efficiency of the oscillation bootstrap driving circuit BOC is selected to be about 60% that is easy to implement, and the net output is 120 milliwatts; however, the efficiency of the oscillating bootstrap driver BOC is relatively linear, and under the condition of low frequency and high power, the conversion efficiency of the controller, the first power tracking driver MPPL1 and the second power tracking driver MPPL2 can reach 95%. It is clear that, as in fig. 6, there is a crossover point, obtained by a large number of practical tests, 210 mw is the crossover point of the two conversion efficiency curves.
The charging battery V1 full charge monitoring, the controller periodically detects whether the output of the voltage detection circuit MPPL3 accords with the full charge characteristic, after the charging battery V1 is fully charged, the controller will turn off the oscillation bootstrap driving circuit BOC, the first power tracking driving circuit MPPL1 and the second power tracking driving circuit MPPL2, in the sleep period, the controller consumes about 100 μ W of power, and the oscillation bootstrap driving circuit BOC, the first power tracking driving circuit MPPL1 and the second power tracking driving circuit MPPL2 consume about 2 milliwatts in total, which is about 50 times less than that in the normal working period.
Example 3
A charging circuit for smart terminal device battery repair, comprising:
a rechargeable battery V1 to be repaired and a photovoltaic unit PVP with the output characteristic less than 100 milliwatts;
and the oscillation bootstrap drive circuit BOC receives the weak current output by the photovoltaic unit PVP and oscillates and outputs a drive current to the rechargeable battery V1 to be repaired.
In the above scheme, the method comprises the following steps:
one end of the third capacitor is connected with the output end of the photovoltaic unit PVP, and the other end of the third capacitor is grounded;
a third inductor and a fourth inductor;
one end of the primary winding of the second transformer is connected to the output end of the photovoltaic unit PVP through a third inductor, and one end of the secondary winding of the second transformer is connected to the output end of the photovoltaic unit PVP through a fourth inductor;
a collector of the second transistor is connected with the other end of the primary winding of the second transformer, a base of the second transistor is connected with the other end of the secondary winding of the second transformer, and an emitter of the second transistor is grounded;
a second flyback rectifier diode, the high potential end of which is connected with the collector of the second transistor and the low potential end of which is connected with the rechargeable battery V1 to be repaired;
and one end of the fourth capacitor is connected with the low potential end of the second flyback rectifying diode, and the other end of the fourth capacitor is grounded.
Example 4
A rechargeable battery oscillation direct charging method based on a micro power supply comprises the following steps:
step 1, respectively connecting the output end of a micro power supply to one end of a primary winding and one end of a secondary winding of a transformer, wherein the coupling coefficient of the transformer is less than 1;
step 2, setting a transistor with an emitter grounded, connecting the other end of a primary winding of a transformer with a collector of the transistor and connecting the other end of a secondary winding of the transformer with a base of the transistor to obtain an intermittent on-off oscillation circuit with a reverse transmission common emitter;
and 3, charging the rechargeable battery V1 by using the output current of the intermittent on-off oscillation circuit.
Compared with the prior art, the invention has the beneficial effects that: the anti-collision system can determine the relative position of triggering an anti-collision signal, realizes a unique and brand-new anti-collision system architecture between the stereo garage and the transfer system, creates a communication architecture of a single-pulse dual-characteristic signal originally, realizes the charging of a battery with completely exhausted electric quantity and a periodic charging circuit with maximum power output, can ensure that a Li-Fi communication module can work for a long time without a mains supply and has no 0 electric quantity repair condition, and can ensure that the stereo garage and each wireless split unit (such as a transfer trailer provided with a Li-Fi terminal) can not have external radio interference and crosstalk.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (2)
1. The utility model provides a stereo garage with based on light communication anticollision lamp which characterized in that includes:
the transfer mobile anti-collision unit is arranged on mobile equipment in the stereo garage and is at least provided with two self-charging type Li-Fi lamp communication modules;
the fixed anti-collision detection unit is arranged at a detection point of the stereo garage and is at least provided with two self-charging type Li-Fi lamp communication modules;
the transfer mobile anti-collision unit or the fixed anti-collision detection unit transmits an anti-collision signal through the self-charging type Li-Fi lamp communication module, the transfer mobile anti-collision unit receives the anti-collision signal output by the self-charging type Li-Fi lamp communication module, and the transfer mobile anti-collision unit is selectively displaced corresponding to the anti-collision signal;
the self-charging type Li-Fi lamp communication module simultaneously transmits and/or receives an anti-collision signal and a communication signal in a single pulse;
the transfer mobile anti-collision unit comprises a first processing unit, a second processing unit and a third processing unit, wherein the first processing unit is used for coding, moving guiding, signal driving and information interaction, and controlling the self-charging type Li-Fi lamp communication module to transmit an anti-collision signal and a communication signal in a single pulse, or receiving and synchronously demodulating the anti-collision signal and the communication signal from the other self-charging type Li-Fi lamp communication modules;
the fixed anti-collision detection unit comprises a second processing unit which is used for coding, signal driving and information interaction, and controlling the self-charging type Li-Fi lamp communication module to send an anti-collision signal and a communication signal simultaneously in a single pulse or receive and synchronously demodulate the anti-collision signal and the communication signal from the other self-charging type Li-Fi lamp communication modules;
the central processing unit is provided with a deep learning chip framework and is connected with the fixed anti-collision detection unit;
the central processing unit is used for acquiring an anti-collision signal which causes the transfer mobile anti-collision unit to generate over-displacement, correspondingly recording the position of the anti-collision signal relative to the position of the fixed anti-collision detection unit in the stereo garage, and forming an anti-collision signal position sample to complete deep learning to obtain an updated transfer mobile anti-collision unit running path;
the central processing unit sends a communication signal corresponding to the updated running path through a self-charging type Li-Fi lamp communication module of the fixed anti-collision detection unit;
the self-charging type Li-Fi lamp communication module comprises:
a photovoltaic unit and a rechargeable battery;
the oscillation bootstrap drive circuit receives the current output by the photovoltaic unit and oscillates and outputs a drive current to the rechargeable battery;
a power tracking control circuit receiving the current output by the photovoltaic unit and selectively outputting an enhanced driving current to the rechargeable battery;
the Li-Fi communication module is arranged in the stereo garage parking unit;
when the electric quantity is higher than a preset electric quantity threshold value, the rechargeable battery outputs driving power to the Li-Fi communication module;
the oscillation bootstrap drive circuit comprises: the transistor forms an oscillation feedback loop by connecting a primary winding and a secondary winding of the transformer, the oscillation feedback loop periodically conducts the flyback rectifier diode, and the conducted flyback rectifier diode charges the rechargeable battery;
the oscillation bootstrap drive circuit comprises:
one end of the first capacitor is connected with the output end of the photovoltaic unit, and the other end of the first capacitor is grounded;
a first inductor and a second inductor;
one end of a primary winding of the first transformer is connected to the output end of the photovoltaic unit through a first inductor, and one end of a secondary winding of the first transformer is connected to the output end of the photovoltaic unit through a second inductor;
a first transistor, the collector of which is connected with the other end of the primary winding of the first transformer, the base of which is connected with the other end of the secondary winding of the first transformer, and the emitter of which is grounded;
a first flyback rectifier diode having a high potential terminal connected to the collector of the first transistor and a low potential terminal connected to the rechargeable battery;
a voltage stabilizing diode, the high electrode of which is grounded and the low electrode of which is connected with the base electrode of the first transistor;
and one end of the second capacitor is connected with the low potential end of the first flyback rectifying diode, and the other end of the second capacitor is grounded.
2. The stereo garage with the light-based collision avoidance light of claim 1, wherein the power tracking control circuit comprises:
the controller is awakened by the current which is output by the photovoltaic unit and is higher than the working threshold of the controller;
a voltage detection circuit periodically detecting the magnitude of the current driven to the rechargeable battery by the oscillating bootstrap drive circuit;
a first power tracking drive circuit selectively turning off an oscillating output of the oscillating bootstrap drive circuit;
the second power tracking driving circuit selectively forms an active rectifying circuit with the oscillation bootstrap driving circuit;
the controller is characterized in that the controller closes the oscillation output of the oscillation bootstrap driving circuit through the first power tracking driving circuit when the current detected by the voltage detection circuit is larger than a first preset threshold value, and synchronously controls the first power tracking driving circuit and the oscillation bootstrap driving circuit to form high-efficiency oscillation output, the controller also controls the second power tracking driving circuit and the oscillation bootstrap driving circuit to form an active rectifying circuit when the current detected by the voltage detection circuit corresponding to the high-efficiency oscillation output is larger than a second preset threshold value larger than the first preset threshold value, and the active rectifying circuit outputs enhanced driving current to the rechargeable battery.
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| CN202011143477.7A CN112412133B (en) | 2018-04-26 | 2018-04-26 | Stereo garage with light communication-based anti-collision lamp |
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| CN202011143477.7A CN112412133B (en) | 2018-04-26 | 2018-04-26 | Stereo garage with light communication-based anti-collision lamp |
| CN201810383277.5A CN108798140B (en) | 2018-04-26 | 2018-04-26 | Stereo garage with based on light communication anticollision lamp |
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| CN108798140B (en) | 2020-11-24 |
| CN108798140A (en) | 2018-11-13 |
| CN112412133B (en) | 2022-08-12 |
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