Solar audio and video system

Abstract

The invention relates to a solar audio and video system. The system comprises a solar battery pack, a sound post, camera equipment and a power supply adapter plate, the power supply adapter plate is connected with the sound post; the solar battery pack is respectively connected with the camera equipment and the power supply adapter plate and is used for supplying power to the camera equipment and supplying power to the sound post through the power supply adapter plate; the camera equipment is connected with the cloud platform and the power supply adapter plate; the camera equipment is used for collecting audio and video information, sending the collected audio and video information to the cloud platform, generating a sound post switching signal according to the audio and video information, and sending the sound post switching signal to the power supply adapter plate; and the power supply adapter plate is used for controlling the working state of the sound post according to the received sound post switching signal. By means of the solar audio and video system, the problem that in an existing new energy monitoring system, the monitoring efficiency of the state of the sound post is low is solved.

Description

Technical Field

[0001] The present application relates to the field of wireless audio and video monitoring, and in particular to a solar-powered audio and video system. Background Art

[0002] In outdoor scenarios where there is no network or electricity, new energy monitoring systems including solar energy are generally used. In current solar monitoring systems, solar energy is used to power the monitoring system to complete monitoring and voice broadcasting.

[0003] However, the existing solar monitoring system lacks hardware detection and interaction mechanisms between the voice module and the video module, that is, the power supply component in the solar monitoring system directly powers the voice module without passing through the video module; at the same time, since the solar monitoring system is in an outdoor scene and is prone to leakage risks, the platform cannot obtain the status of the sound column in time, causing the sound column to consume a lot of energy, making the energy-saving effect of the monitoring system poor.

[0004] There is a problem in the related technology that there is a lack of status monitoring of the sound column in the new energy monitoring system, which leads to poor energy-saving effect of the system. At present, no effective solution has been proposed. Summary of the invention

[0005] In this embodiment, a solar audio and video system is provided to solve the problem of poor energy saving effect in the new energy monitoring system in the related art.

[0006] In a first aspect, a solar audio and video system is provided in this embodiment, the system comprising: a solar cell group, a sound column, a camera device, and a power adapter board; The power adapter board is connected to the sound column; The solar cell group is connected to the camera device and the power adapter board respectively, and is used to supply power to the camera device, and to supply power to the sound column through the power adapter board; The camera device is connected to the cloud platform and the power adapter board; the camera device is used to collect audio and video information, and send the collected audio and video information to the cloud platform, as well as receive a sound column switch signal generated according to the audio and video information, and send the sound column switch signal to the power adapter board; the power adapter board is used to control the working state of the sound column according to the received sound column switch signal.

[0007] In some of the embodiments, the sound column is connected to the camera device; The camera device is used to output audio information to be played to the sound column, obtain the access status of the sound column, and report the access status of the sound column to the cloud platform.

[0008] In some of the embodiments, the sound column is connected to the audio and video connector to connect the camera device; The camera device outputs the audio information to be played to the sound column through the audio and video connector, and obtains the access status of the sound column by reading the level status of the audio and video connector.

[0009] In some of the embodiments, the power adapter board includes: a sound column power switch unit; The sound column power switch unit controls the sound column to broadcast voice or enter a standby state in response to the sound column switch signal sent by the camera device.

[0010] In some of the embodiments, the camera device is also used to send the access status of the sound column to the cloud platform.

[0011] In some of the embodiments, the solar cell group includes a power supply and a charge and discharge management unit; the power supply is connected to the charge and discharge management unit; The charge and discharge management unit is connected to the camera device and the power adapter board respectively; The charge and discharge management unit is used to discharge to the power adapter board according to the control signal sent by the camera device.

[0012] In some of the embodiments, the camera device includes a control unit and a signal separation unit; The signal separation unit is connected to the sound column and the control unit respectively; The control unit is used to generate a sound column switch signal according to the audio and video information; The signal separation unit is used to separate signals of different attributes generated by the two-way interaction between the camera device and the sound column.

[0013] In some of the embodiments, the signal separation unit includes a voltage dividing component and a connector; the voltage dividing component is connected to the control unit; The connector is connected to the sound column; the connector is also connected to the control unit through the voltage divider component.

[0014] In some of the embodiments, the signal separation unit further includes a power amplification unit and an isolation capacitor; The power amplification unit is used to receive the sound column broadcast signal sent by the control unit; The output end of the power amplification unit is connected to one end of the isolation capacitor, and the other end of the isolation capacitor is connected to the sound column through the connector.

[0015] In some of the embodiments, the power adapter board is also used to perform over-current detection on the sound column.

[0016] Compared with the related art, a solar audio and video system is provided in the present embodiment. By setting a power adapter board in the existing solar audio and video system, and connecting the sound column and the camera device through the power adapter board, the collected audio and video information is sent to the cloud platform through the camera device. At the same time, the camera device generates a sound column switch signal according to the collected audio and video information, and forwards the sound column switch signal to the power adapter board, so that the power adapter board controls the working state of the sound column according to the received sound column switch signal, and the camera device controls the power adapter board to disconnect the power supply to the sound column or maintain the power supply to the sound column according to the collected audio and video information; at the same time, the collected audio and video information is uploaded to the cloud platform, so that the cloud platform can obtain the state of the sound column in real time, which solves the problem of low efficiency of state monitoring of the sound column in the existing new energy monitoring system.

[0017] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the structure of an existing solar audio and video system; Figure 2 is a schematic diagram of the structure of a solar audio and video system provided in an embodiment of the present application; Figure 3 is a circuit diagram of a low-power shut-down circuit for a sound column provided in this preferred embodiment; Figure 4 is a circuit diagram of a signal separation circuit provided in this preferred embodiment; Figure 5 It is a structural diagram of the audio and video system provided in this specific embodiment. DETAILED DESCRIPTION

[0019] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with general skills in the technical field to which this application belongs. The words "one", "a", "the", "these" and the like in this application do not indicate a quantitative limitation, and they may be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" may mean: A exists alone, A and B exist at the same time, and B exists alone. Generally, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0021] In scenes without electricity and network, such as streets, communities, and drowning prevention, new energy is generally used for power generation. The existing solar video surveillance and voice broadcasting systems have no energy efficiency management. There is no interactive control between the broadcast sound column and the video system, and there is a lack of inspection mechanism. The working status of the broadcast sound column cannot be reported. When there is no voice broadcast event, the sound column has been consuming solar power because the output of the solar panel battery group is directly connected to the power input of the sound column, resulting in a short standby time for the entire video surveillance and voice broadcasting system. Figure 1 This is a schematic diagram of the existing solar audio and video system. Figure 1 In the existing solar audio and video system, the solar cell group is connected to the camera and the sound column respectively, and then directly supplies power to the camera and the sound column respectively. At the same time, the camera is connected to the cloud platform for communication, and the communication connection here can be through 4G connection, WiFi connection, etc. Through the RCA terminal that is unidirectionally connected between the camera and the sound column, the audio playback signal carrying the audio information is forwarded to the sound column to realize the broadcast of the sound column, but the camera cannot obtain the status of the sound column in real time, nor can it upload the real-time status of the sound column to the cloud platform. At the same time, the existing solar audio and video system does not have the function of intelligent energy efficiency management, which causes the solar cell group to continuously power the sound column, causing the solar cell group in the system to consume power quickly and have a short battery life.

[0022] The fundamental reason is that on the one hand, the hardware of this system does not support the sound column detection function, and the sound columns are often "destroyed" or "stolen" by humans, resulting in the failure of the anti-drowning or regional alarm installation scenarios, and the cloud platform cannot receive abnormal information; secondly, there is no switching circuit added to the power input of the sound column, and the static power consumption of the 12V input circuit of each sound column manufacturer is high, the consistency of the battery life of the whole machine is poor, and there are many customer complaints and difficult after-sales service.

[0023] Therefore, in order to solve the problem that the existing new energy monitoring system cannot monitor the sound column in real time, and the system leakage leads to poor energy saving effect of the system, the present application provides a new solar audio and video system. Figure 2 Schematic diagram of the structure of the solar audio and video system provided by the embodiment of the present application. Figure 2 The solar audio and video system is composed of a solar cell group, a camera, a power adapter board and a sound column, wherein the solar cell group transmits power to the camera and the power adapter board respectively, and then transmits power to the sound column via the power adapter board. The aforementioned camera device includes the camera in this embodiment.

[0024] Compared with the existing solar audio and video system, a power adapter board for real-time control of the output to the sound column power supply is added in this embodiment. The power adapter board is connected to the camera, solar cell group and sound column respectively. The camera communicates with the cloud platform and sends the audio and video collected by real-time monitoring to the cloud platform. The camera generates an audio switch signal based on the collected audio and video information, and sends the audio switch signal to the power adapter board; by controlling the power adapter board directly connected to the solar cell group to achieve control of the sound column, the sound column power supply is changed from the original uncontrollable to intelligent controllable, avoiding the situation in the existing system where the solar cell group directly supplies power to the sound column, resulting in a large energy consumption of the sound column. At the same time, the audio and video connection signal between the camera and the sound column, such as the RCA terminal signal, is changed from one-way to two-way, so that the camera outputs audio to the sound column. When the sound column is detected to be connected, the camera reads the level status of the RCA terminal and reports it to the cloud platform.

[0025] In one specific embodiment, the solar audio and video system includes: a solar cell group, a sound column, a camera device, and a power adapter board; the power adapter board is connected to the sound column; the solar cell group is connected to the camera device and the power adapter board, respectively, for supplying power to the camera device and to the sound column through the power adapter board; the camera device is connected to a cloud platform and the power adapter board; the camera device is used to collect video information, and send the collected audio and video information to the cloud platform, and generate a sound column switch signal according to the audio and video information, and send the sound column switch signal to the power adapter board; the power adapter board is used to control the working state of the sound column according to the received sound column switch signal.

[0026] Among them, the solar cell group can also be other new energy devices that can be converted into power energy, such as wind energy, biomass energy, geothermal energy, ocean energy, etc., which are selected according to the actual sound column broadcasting scene and are not specifically limited here. In the scenario where there is no electricity and no network, in this specific embodiment, solar energy is converted into electrical energy by a solar cell group to power the entire audio and video system. At the same time, a power adapter board connected to the solar cell group and the sound column, as well as to the camera device, is provided. By setting the power adapter board, the power provided by the solar cell group is not directly sent to the sound column. At the same time, the camera device is connected to the cloud platform to send the collected audio and video information to the cloud platform; at the same time, the camera device generates a sound column switch signal according to the collected audio and video information, and sends the sound column switch signal to the power adapter board; the power adapter board is connected to the camera device, so that the power adapter board receives the sound column switch signal sent by the camera device, and controls whether to provide power to the sound column, thereby avoiding the situation where power is still consumed when the sound column is not needed, resulting in the problem of fast power consumption and short battery life of the solar cell group.

[0027] In one of the specific embodiments, the sound column is connected to a camera device; the camera device is used to output audio information to be played to the sound column, obtain the access status of the sound column, and report the access status of the sound column to the cloud platform.

[0028] Furthermore, the sound column is connected to the audio and video connector to connect to the camera device; the camera device outputs the audio information to be played to the sound column through the audio and video connector, and obtains the access status of the sound column by reading the level status of the audio and video connector.

[0029] In this embodiment, in addition to being connected to the cloud platform, the solar cell group, and the power adapter board, the camera device is also connected to the sound column, specifically, through an audio and video connector, such as an RCA terminal. Thereafter, the camera device obtains the level state of the RCA terminal at the sound column end, and then obtains the access state of the sound column; when the sound column is in the accessed broadcast working state, the camera device sends the audio information to be played to the sound column to control the sound column to broadcast. Exemplarily, after the camera device acquires the audio and video information, it detects the audio information and the video information. When an event is detected, such as when someone passes by, it is necessary to control the sound column to broadcast a voice. At this time, the camera device generates a sound column switch signal and sends the sound column switch signal to the power adapter board so that the power adapter board turns on the power of the sound column. At the same time, the camera device detects whether the sound column is connected. If the sound column is connected, the camera device sends audio information to the sound column, so that the sound column plays the corresponding audio information to remind pedestrians to be safe.

[0030] In addition, when the sound column has finished broadcasting, the camera device is also used to detect the level switch signal of the sound column, and the level switch signal can be used to indicate whether the sound column has finished broadcasting the audio information to be broadcasted. After the camera device obtains the level switch signal of the sound column, it controls the power adapter board to disconnect the power of the sound column according to the level switch signal, which is conducive to the real-time detection of the playing state of the sound column, and then after the sound column has finished playing, the power of the sound column is controlled to be disconnected to save energy.

[0031] In one of the specific embodiments, the power adapter board includes: a sound column power switch unit; the sound column power switch unit responds to a sound column switch signal sent by a camera device to control the sound column to broadcast voice or enter a standby state.

[0032] Furthermore, the camera device is also used to send the access status of the sound column to the cloud platform, so that the cloud platform can obtain the access status of the sound column in time, and then promptly discover the damage or loss of the sound column, thereby improving the perception efficiency of the sound column status.

[0033] In this embodiment, a sound column power switch unit is provided in the power adapter board, and the sound column power switch unit controls the on or off state of the sound column according to the sound column switch signal, so that the sound column enters the standby state after the voice broadcast is completed, avoiding leakage problems and thus avoiding power waste.

[0034] Preferably, the sound column power switch unit comprises a sound column low power consumption shutdown circuit. Figure 3 is a circuit diagram of a low power shut-down circuit for a sound column provided in this preferred embodiment, refer to Figure 3 The low-power shutdown circuit of the sound column includes a resistor R12, a power switch tube Q1 and a transistor Q2. One end of the resistor R12 is connected to the camera device to receive the audio switch signal sent by the camera device, and the other end is connected to the base of the transistor Q2. The transmitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is connected to the drain of the power switch tube Q1 through the resistor R11. The source of the power switch tube Q1 is connected to the power supply, and the gate of the power switch tube Q1 is connected to the sound column. R12 is a resistor with a nominal value of 2KΩ / 1% / 0402. Its main function is current limiting and voltage division.

[0035] When the sound column does not need to broadcast audio information, for example, when no one passes by, in order to save power consumption, the sound column should be in standby state. At this time, the camera generates a sound column standby signal and forwards the sound column standby signal to the sound column power switch unit of the power adapter board, that is, the sound column low power shutdown circuit here. The circuit receives the sound column standby signal and outputs a low level to the resistor R12 according to the sound column standby signal. At this time, the transistor Q2 is turned off, the power switch tube Q1 is also turned off, and the sound column is in standby state, so that the power adapter board including the sound column low power shutdown circuit has extremely low standby power consumption. The sound column switch signal includes the sound column standby signal here and the sound column broadcast signal.

[0036] When the sound column needs to broadcast audio information, that is, broadcast voice, the sound column should be in the broadcasting state at this time, the camera device generates a sound column broadcast signal, and forwards it to the sound column power switch unit of the power adapter board, that is, the low-power shutdown circuit of the sound column here. At this time, the audio enable signal is high level, and the high level reaches the resistor R12. At this time, the transistor Q2 is turned on, and the power switch tube Q1 is also turned on. The voltage input from the DC power input end of the solar panel passes through the power switch tube Q1 to the sound column power supply. At this time, the sound column is in the broadcasting state. When the sound column finishes playing the audio information, the camera device detects the level switch signal of the sound column; thereafter, the camera device generates a sound column standby signal and forwards it to the sound column power switch unit of the power adapter board, that is, the low-power shutdown circuit of the sound column here. The circuit receives the sound column standby signal and outputs a low level to the resistor R12 according to the sound column standby signal. At this time, the transistor Q2 is turned off, the power switch tube Q1 is also turned off, and the sound column is in the standby state.

[0037] Preferably, Q1 is a P-channel enhancement MOSFET (metal oxide semiconductor field effect transistor) of the STM4435P type. In this type of MOSFET, when the gate voltage is lower than the threshold voltage, the drain and source will be turned on, allowing current to flow. In this low-power shutdown circuit of the sound column, Q1 acts as a switching element to control the power supply path from the DC power input to the load. Specifically, when the gate terminal of Q1 (i.e., the "1" pin marked in the circuit diagram) receives sufficient positive voltage, Q1 will be turned off, thereby preventing the power supply voltage from flowing to the load; conversely, if the gate terminal does not have enough positive voltage or is pulled down to a negative voltage, the power tube Q1 remains in the on state, so that the voltage at the DC power input can be passed to the subsequent circuit.

[0038] Q2 is an 8050_NPN bipolar junction transistor (BJT). This is an NPN transistor, and here it is configured as an emitter follower. The main feature of the emitter follower is that the input impedance is high and the output impedance is low, so it is often used to buffer and isolate different circuit segments. In this embodiment, Q2 acts as a buffer between the audio enable signal and the gate of Q1. When the audio enable signal is low or there is no valid signal, Q2 is cut off, cutting off the forward bias of the gate of Q1, causing Q1 to turn off, so as to close the power supply path from the DC power input to the load, reducing the energy consumption of the entire circuit. On the contrary, when the audio enable signal is high, the base of Q2 is forward biased, causing it to enter the saturation zone working mode. At this time, the voltage drop between the collector and the emitter is very small, which is equivalent to a low-resistance switch, so that the gate of Q1 can also obtain a voltage close to the DC power input, thereby turning on Q1 to turn on the power supply, so that the power adapter board supplies power to the sound column.

[0039] In summary, the resistor R12, the power switch tube Q1 and the transistor Q2 together constitute a simple power control circuit, which determines whether to open or close the power supply path from the DC power input terminal to the load according to whether the audio enable signal is high or low.

[0040] In one specific embodiment, the solar cell group includes a power supply and a charge and discharge management unit; the power supply and the charge and discharge management unit are connected; the charge and discharge management unit is respectively connected to the camera device and the power adapter board; the charge and discharge management unit is used to discharge to the power adapter board according to the control signal sent by the camera device.

[0041] Furthermore, the camera device is also used to detect the state of the charge and discharge management unit, and control the charge and discharge management unit to charge or discharge according to the state of the charge and discharge management unit.

[0042] In this embodiment, by setting a charge and discharge management unit, according to the control signal received by the camera device, the solar cell group is controlled to discharge the power adapter board. Exemplarily, the control signal here is determined according to whether the sound column is connected, or according to the amount of electric energy stored in the charge and discharge management unit in the solar cell group, whether the sound column switch signal is received to control the sound column to play audio information, etc.

[0043] In one specific embodiment, the camera device includes a control unit and a signal separation unit; the signal separation unit is connected to the sound column and the control unit respectively; the control unit is used to generate a sound column switch signal according to the audio and video information; the signal separation unit includes a voltage divider component; the voltage divider component is connected to the camera device; the signal separation unit is used to separate the different attribute signals of the two-way interaction between the camera device and the sound column.

[0044] Furthermore, the signal separation unit also includes a connector; the connector is connected to the sound column; the connector is also connected to the control unit through a voltage divider component.

[0045] The signal separation unit also includes a power amplifier unit and an isolation capacitor; the power amplifier unit is used to receive the sound column broadcast signal sent by the control unit of the camera device; the output end of the power amplifier unit is connected to one end of the isolation capacitor, and the other end of the isolation capacitor is connected to the sound column through a connector.

[0046] Figure 4 is a circuit diagram of a signal separation circuit provided by this preferred embodiment. Figure 4 , the sound column connects the sound column to the access port of the voltage divider component in the signal separation circuit through the connector J7, wherein the voltage divider component includes: resistor R2152, resistor R2153 and capacitor C2166, the voltage divider component and the pull-down resistor at the sound column end divide the voltage, so that the output access signal becomes a low level to the main control unit of the camera, at this time the main control unit in the camera recognizes that the low level indicates that the sound column has been connected; otherwise, it means that the sound column is not connected. Exemplarily, the main control unit of the camera here is the control unit of the camera device in the aforementioned embodiment, the resistance value of resistor R2152 is 10KΩ, the resistance value of resistor R2153 is 4.7KΩ, and the capacitance value of capacitor C2166 is 1μF.

[0047] When the sound column needs to broadcast voice, the camera main control unit sends the power amplifier switch signal used to control the power amplifier to the signal separation circuit. The power amplifier switch signal here is the sound column broadcast signal in the aforementioned embodiment. The power amplifier switch signal controls the power amplifier K8002D switch, and then controls whether the sound column receives and broadcasts the audio information sent by the camera main control unit. Here, C2165 plays a role in isolating DC, so that the input and output between the sound column and the camera main control unit do not interfere with each other. Through the above-mentioned signal separation circuit, the analog signals and digital signals interacting between the sound column and the camera device do not interfere with each other, thereby achieving isolation of the signal interaction between the two parties.

[0048] Specifically, the audio output port of the camera is connected to the external sound column through the RCA terminal, which is used to output audio information to the sound column; when the sound column is inserted, a low-level output access signal is sent to the main control unit of the camera, so that the camera obtains the signal accessed by the sound column; when the sound column needs to broadcast audio, the camera outputs the power amplifier switch signal and audio information to the signal separation circuit, and the power amplifier switch signal is connected to the power amplifier through pin 1 of the power amplifier K8002D. When the power amplifier switch signal is set to a high level, the power amplifier is turned off, and when the power amplifier switch signal is set to a low level, the power amplifier is turned on. At the same time, the main control unit of the camera inputs audio information into the signal separation circuit, and through capacitor C2164 and resistor R2132, it is connected to pin 4 of the power amplifier K8002D to input audio information. Thereafter, when the power amplifier switch signal is set to a low level, the audio information is output to capacitor C2165 through pin 8 of power amplifier K8002D, and capacitor C2165 is connected to pin 1 of connector J7, so that the signal is output to the sound column through capacitor C2165 and connector J7, causing the sound column to play the audio information.

[0049] For example, the resistance of resistor R2131 is 100KΩ, the capacitance of capacitor C2165 is 1μF, the capacitance of capacitor C2164 is 0.1μF, and the resistance of resistor R2132 is 22KΩ. Pin 1 of power amplifier K8002D is used as shutdown mode control input, which is turned off when set to high level; pin 2 is the internal common mode reference voltage, and pin 2 is connected to capacitor C2148, where capacitor C2148 plays an important role in power supply rejection ratio, noise, and POP sound; IN+ in pin 3 is the positive input terminal, which is generally connected to pin 2; IN- in pin 4 is the negative input terminal, which is used for audio input; VO+ in pin 5 represents the positive output terminal of BTL; VDD in pin 6 represents the power input terminal; pin 7 represents the power ground; VO- in pin 8 represents the negative output terminal.

[0050] Furthermore, in Figure 4 In the signal separation circuit shown, the resistor R2132 with a resistance value of 22kΩ and the capacitor C2164 are connected in series to play the role of high-pass filtering; the capacitor C2165 with a capacitance value of 0.1μF plays an isolation role, and the capacitor C2166 with a capacitance value of 0.1μF is grounded to play a filtering role. Through the above-mentioned signal separation circuit, it is beneficial to effectively separate the analog signal and digital signal interacting between the sound column and the camera equipment, thereby further improving the signal quality.

[0051] In one specific embodiment, capacitor C2165 isolates the signal separation circuit into an audio output circuit and a sound column input circuit; wherein, Figure 4The audio output circuit includes: power amplifier K8002D, inductor LB6, capacitor C2146, capacitor C2147, capacitor C2148, capacitor C2164, resistor R2130, resistor R2131 and resistor R2132. The sound column input detection circuit includes resistor R2152, resistor R2153, capacitor C2166 and connector J7 connected to the sound column.

[0052] Furthermore, capacitor C2165 cuts off the input and output of the J7 audio port. When the sound column is not connected, resistor R2152 does not divide the voltage. At this time, the output access signal output by the sound column input detection circuit is high level, that is, the main control of the camera reads a high level; when the sound column is connected, resistor R2152 and the sound column input end, that is, the sound column access signal end in the figure, pull down the resistor to divide the voltage, thereby generating a level change; at this time, the software judgment logic in the main control of the camera includes: reading this change, "recognizing" that the sound column is inserted. The traditional audio output does not set capacitor C2165 for signal classification, nor does it set resistor R2152, resistor R2153 and capacitor C2166 that can achieve voltage division, nor does it involve the software judgment logic in the main control of the camera. Through the circuit in this specific embodiment, the signal transmitted between the sound column and the camera device is separated, which is conducive to improving the quality of the signal and further improving the efficiency and accuracy of sound column detection.

[0053] In one possible embodiment, the power adapter board is also used to perform overcurrent detection on the sound column to prevent damage to the sound column caused by excessive current, promptly identify abnormal current conditions in the sound column, and ensure the safety of the sound column broadcasting.

[0054] In another specific embodiment, taking the camera device as a low-power camera as an example, the main control of the low-power camera is connected to the cloud platform. Figure 5 Schematic diagram of the structure of the audio and video system provided in this specific embodiment. Figure 5The system includes a low-power camera, a sound column, a solar panel, a power adapter board, and a lithium battery charge and discharge management unit; wherein the solar panel absorbs solar energy and charges the lithium battery charge and discharge management unit through solar energy. The low-power camera is connected to the cloud platform, the lithium battery charge and discharge management unit, the power adapter board, and the sound column respectively, and the lithium battery charge and discharge management unit is connected to the power adapter board to provide power for the low-power camera and the power adapter board respectively. The low-power camera is used for audio and video acquisition. At the same time, the low-power camera and the sound column are bidirectionally connected through the RCA terminal, the RCA terminal on the sound column side is detected, and the plug-in status of the sound column is identified. When the sound column is inserted, the low-power camera obtains the state of the sound column insertion, and forwards the collected audio and video information as an audio and video stream to the cloud platform. After receiving the state of the sound column, the low-power camera controls whether the lithium battery charge and discharge management unit supplies power to the power adapter board according to the audio switch signal. At the same time, the low-power camera controls the opening or closing of the power adapter board according to the audio switch signal, and then controls whether the power adapter board provides power to the sound column.

[0055] At the same time, the low-power camera and the lithium battery charge and discharge management unit receive control signals sent by both parties respectively. For example, a fan for cooling the battery is provided in the lithium battery charge and discharge management unit. The low-power camera sends a control signal to the lithium battery charge and discharge management unit to obtain whether there is electric energy in the lithium battery charge and discharge management unit, and to detect whether the lithium battery is in a low temperature state, and whether the electric energy is fully charged and other information. The lithium battery charge and discharge management unit sends a control signal to the low-power camera to obtain which power supply method can be used. For example, the power supply method includes power supply line, power supply capacity, load nature, power supply voltage level, metering method, household access method, operation method, substation type, etc. The power supply methods that can be provided are classified as follows: according to voltage, it is divided into high-voltage and low-voltage power supply methods. According to the number of power phases, it is divided into single-phase and three-phase power supply methods. According to the number of power supply sources, it is divided into single-power supply and multi-power supply methods. According to the number of power supply circuits, it is divided into single-channel and multi-channel power supply methods. According to the power use period, it is divided into temporary and formal power supply methods. According to the metering form, it is divided into meter-installed and non-meter-installed power supply methods. According to the management relationship, it is divided into direct and indirect power supply methods.

[0056] Through the solar audio and video system including the low-power shutdown circuit for the sound column and the signal separation circuit, the camera equipment in the system can timely obtain whether the sound column is inserted and the status information when inserted, and control the power adapter board to be turned on and off according to whether the sound column is inserted and the status information when the sound column is inserted, so as to control the sound column to broadcast voice or be in standby state through the power adapter board, thereby avoiding the system still supplying power to the sound column when the sound column is in standby state, causing the sound column to leak electricity and consume more electricity, which is beneficial to improving the detection efficiency of the sound column state.

[0057] It should be noted that the above modules can be functional modules or program modules, and can be implemented by software or hardware. For modules implemented by hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0058] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0059] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0060] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0061] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A solar powered audio and video system, It is characterized in that The system includes: a solar cell group, a sound column, a camera device, and a power adapter board; The power adapter board is connected to the sound column; The solar cell group is connected to the camera device and the power adapter board respectively, and is used to supply power to the camera device, and to supply power to the sound column through the power adapter board; The camera device is connected to the cloud platform and the power adapter board; the camera device is used to collect audio and video information, and send the collected audio and video information to the cloud platform, and generate a sound column switch signal according to the audio and video information, and send the sound column switch signal to the power adapter board; the power adapter board is used to control the working state of the sound column according to the received sound column switch signal.

2. The solar audio and video system according to claim 1, It is characterized in that The sound column is connected to the camera device; The camera device is used to output audio information to be played to the sound column, obtain the access status of the sound column, and report the access status of the sound column to the cloud platform.

3. The solar audio and video system according to claim 1, It is characterized in that The sound column is connected to the camera device via an audio and video connector; The camera device outputs the audio information to be played to the sound column through the audio and video connector, and obtains the access status of the sound column by reading the level status of the audio and video connector.

4. The solar audio and video system according to claim 1, It is characterized in that The power adapter board includes: a sound column power switch unit; The sound column power switch unit controls the sound column to broadcast voice or enter a standby state in response to the sound column switch signal sent by the camera device.

5. The solar audio and video system according to claim 3, It is characterized in that The camera device is also used to send the access status of the sound column to the cloud platform.

6. The solar audio and video system according to claim 1, It is characterized in that The solar cell group includes a power supply and a charge and discharge management unit; the power supply is connected to the charge and discharge management unit; The charge and discharge management unit is connected to the camera device and the power adapter board respectively; The charge and discharge management unit is used to discharge to the power adapter board according to the control signal sent by the camera device.

7. The solar audio and video system according to any one of claims 1 to 6, It is characterized in that The camera device includes a control unit and a signal separation unit; The signal separation unit is connected to the sound column and the control unit respectively; The control unit is used to generate a sound column switch signal according to the audio and video information; The signal separation unit is used to separate signals of different attributes generated by the two-way interaction between the camera device and the sound column.

8. The solar audio and video system according to claim 7, It is characterized in that The signal separation unit includes a voltage dividing component and a connector; the voltage dividing component is connected to the control unit; The connector is connected to the sound column; the connector is also connected to the control unit through the voltage divider component.

9. The solar audio and video system according to claim 8, It is characterized in that The signal separation unit also includes a power amplification unit and an isolation capacitor; The power amplification unit is used to receive the sound column broadcast signal sent by the control unit; The output end of the power amplification unit is connected to one end of the isolation capacitor, and the other end of the isolation capacitor is connected to the sound column through the connector.

10. The solar audio and video system according to claim 7, It is characterized in that The power adapter board is also used to perform overcurrent detection on the sound column.

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