4G low-power-consumption pan-tilt camera circuit

Abstract

The utility model discloses a 4G low-power-consumption pan-tilt camera circuit, which comprises a main control circuit, an image sensing circuit, an infrared light supplementing and light sensing circuit, an optical filter driving circuit, a pan-tilt motor driving circuit, a 4G communication circuit and an external circuit, the main control circuit is connected with the image sensing circuit, the infrared light supplementing and light sensing circuit, the optical filter driving circuit, the holder motor driving circuit, the 4G communication circuit and the external circuit, and the external circuit comprises an external control chip and an external interface used for being connected with an external function module. And the external control chip is respectively connected with the main control circuit and the external interface. According to the utility model, the external circuit is additionally arranged, so that the expansibility and compatibility of the PTZ camera are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pan-tilt cameras, and specifically relates to a 4G low-power pan-tilt camera circuit. Background Art

[0002] A pan-tilt camera is a camera with a pan-tilt. A pan-tilt camera is a surveillance camera integrated with a pan-tilt system, which can rotate horizontally and vertically to achieve full coverage of the surveillance area. The pan-tilt camera can be driven by an internal motor to achieve a certain angle of horizontal rotation and vertical rotation, so as to achieve all-round and dead-angle-free surveillance of the surveillance area. Users can remotely control the rotation and angle adjustment of the pan-tilt camera through terminal devices such as mobile phone APPs and computers to achieve flexible surveillance. Modern pan-tilt cameras are often equipped with a variety of intelligent functions, such as human detection, face recognition, voice recognition, etc., which can more accurately identify targets and trigger alarms.

[0003] However, existing pan-tilt cameras are often a closed system, lacking standard external interfaces, which makes it impossible for users to directly connect external devices or add new functional modules, such as adding PIR human induction and radar induction functional modules. Due to the lack of expandability, the functions of pan-tilt cameras are limited within the factory settings and cannot be customized according to the personalized needs of users. Summary of the Utility Model

[0004] In order to overcome the problem that existing pan-tilt cameras lack expandability and cannot be customized according to the personalized needs of users, the utility model provides a 4G low-power pan-tilt camera circuit.

[0005] The technical solution of the utility model is as follows:

[0006] A 4G low-power pan-tilt camera circuit includes a main control circuit, an image sensing circuit, an infrared supplementary light and light sensing circuit, a filter drive circuit, a pan-tilt motor drive circuit, a 4G communication circuit and an external circuit. The main control circuit is respectively connected to the image sensing circuit, the infrared supplementary light and light sensing circuit, the filter drive circuit, the pan-tilt motor drive circuit, the 4G communication circuit and the external circuit. The external circuit includes an external control chip and an external interface for connecting external functional modules. The external control chip is respectively connected to the main control circuit and the external interface.

[0007] As a preferred solution of the utility model, it further includes a battery, a charging management circuit and a DC-DC circuit. The DC-DC circuit is respectively connected to the battery, the charging management circuit and the main control circuit. The battery is also connected to the charging management circuit.

[0008] As a preferred solution of the present utility model, the charging management circuit includes a charging management chip, a solar interface for connecting to a solar battery pack, and a charging interface for connecting to a charging adapter. The charging management chip is respectively connected to the solar interface, the charging interface, and the battery.

[0009] As a preferred solution of the present utility model, it further includes a power-on and power-off circuit, and the power-on and power-off circuit is connected to the main control circuit.

[0010] As a preferred solution of the present utility model, it further includes an audio acquisition circuit, and the audio acquisition circuit is connected to the main control circuit.

[0011] As a preferred solution of the present utility model, it further includes an audio amplification circuit, and the audio amplification circuit is connected to the main control circuit.

[0012] As a preferred solution of the present utility model, it further includes a TF card circuit, and the TF card circuit is connected to the main control circuit.

[0013] As a preferred solution of the present utility model, it further includes a NOR Flash circuit, and the NOR Flash circuit is connected to the main control circuit.

[0014] As a preferred solution of the present utility model, it further includes a reset circuit, and the reset circuit is connected to the main control circuit.

[0015] As a preferred solution of the present utility model, the external function module includes a PIR motion sensor or a radar sensor.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. By setting up an external circuit, the expandability and compatibility of the PTZ camera are improved, enabling users to connect external function modules such as PIR motion sensors and radar sensors through external interfaces, thereby expanding the functions and application scenarios of the camera;

[0018] 2. By setting up an infrared fill light and light sensor circuit and a filter driver circuit, the PTZ camera can automatically detect the ambient light conditions and switch the filter mode accordingly, ensuring that clear and real images can be captured by the PTZ camera both during the day and at night;

[0019] 3. By setting up a 4G communication circuit, it is responsible for efficient and stable data transmission tasks, and can maintain a connection with the APP cloud in a very low power consumption mode when the device is in the sleep and keep-alive state, ensuring that it can be quickly awakened when a critical event occurs;

[0020] 4. By setting up a charging management circuit, intelligent management and maintenance of the battery are carried out, and a solar interface and a charging interface are provided, offering users a flexible choice of charging methods. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a principle block diagram of an embodiment of the present invention;

[0023] Figure 2 It is a circuit schematic diagram of part A of the main control circuit in an embodiment of the present invention;

[0024] Figure 3 It is a circuit schematic diagram of part B of the main control circuit in an embodiment of the present invention, where the circuit schematic diagram of part A and the circuit schematic diagram of part B together form a complete circuit schematic diagram of the main control circuit;

[0025] Figure 4 It is a circuit schematic diagram of the image sensing circuit in an embodiment of the present invention;

[0026] Figure 5 It is a circuit schematic diagram of the infrared supplementary light and light sensing circuit in an embodiment of the present invention;

[0027] Figure 6 It is a circuit schematic diagram of the filter driver circuit in an embodiment of the present invention;

[0028] Figure 7 It is a circuit schematic diagram of the pan-tilt motor drive circuit in an embodiment of the present invention;

[0029] Figure 8 It is a circuit schematic diagram of the 4G communication circuit in an embodiment of the present invention;

[0030] Figure 9 It is a circuit schematic diagram of the external circuit in an embodiment of the present invention;

[0031] Figure 10 It is a principle block diagram of another embodiment of the present invention;

[0032] Figure 11 It is a circuit schematic diagram of the charging management circuit in another embodiment of the present invention;

[0033] Figure 12This is the circuit schematic diagram of the power-on and power-off circuit in another embodiment of the present utility model;

[0034] Figure 13 This is the circuit schematic diagram of the audio acquisition circuit in another embodiment of the present utility model;

[0035] Figure 14 This is the circuit schematic diagram of the audio amplification circuit in another embodiment of the present utility model;

[0036] Figure 15 This is the circuit schematic diagram of the TF card circuit in another embodiment of the present utility model;

[0037] Figure 16 This is the circuit schematic diagram of the NOR Flash circuit in another embodiment of the present utility model;

[0038] Figure 17 This is the circuit schematic diagram of the reset circuit in another embodiment of the present utility model. Detailed implementation manners

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, it is declared that the embodiments described below are only used to explain the present utility model and are not used to limit the present utility model.

[0040] It should be noted that the terms "installation", "setting", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined.

[0041] Please refer to Figure 1 , this embodiment provides a 4G low-power pan-tilt camera circuit, including a main control circuit 1, an image sensing circuit 2, an infrared supplementary light and light sensing circuit 3, a filter driver circuit 4, a pan-tilt motor driver circuit 5, a 4G communication circuit 6 and an external circuit 7. The main control circuit 1 is respectively connected to the image sensing circuit 2, the infrared supplementary light and light sensing circuit 3, the filter driver circuit 4, the pan-tilt motor driver circuit 5, the 4G communication circuit 6 and the external circuit 7.

[0042] Please refer to Figure 2 , Figure 3, the main control circuit 1 is used to receive and process the transmission data of each circuit module, and control the operation of each circuit module according to the corresponding processing results. The main control circuit 1 mainly includes an SOC main control chip, and the SOC main control chip is respectively connected to an image sensing circuit 2, an infrared supplementary light and light sensing circuit 3, a filter driver circuit 4, a pan-tilt motor driver circuit 5, a 4G communication circuit 6 and an external circuit 7. Among them, the SOC main control chip integrates a new generation of high-performance ISP image processing module and Smart H2.65 video compression and encoding module, integrates an artificial intelligence processing engine, and has excellent image processing capabilities, extremely high encoding quality and intelligent processing capabilities. The SOC main control chip internally integrates a memory and has complete peripheral interfaces required for applications: USB, SDIO, Ethernet PHY, UART, SPI, mipi interface; supports an NN intelligent neural network hardware acceleration engine and network structures such as human and face.

[0043] Please refer to Figure 4 , the image sensing circuit 2 is used to collect image data, and transmit the collected image data to the SOC main control chip for processing. The SOC main control chip then uploads the processed image data to the APP cloud through the 4G communication circuit 6 or saves it to the local SD card. Among them, the image sensing circuit 2 mainly includes an image sensor, and the image sensor is connected and communicates with the SOC main control chip through a MIPI serial communication interface. The image sensor uses an advanced digital CMOS image sensor, with a maximum supported transmission rate of 2304Hx1296V@30fps; outputs raw format images, with an effective pixel window of 2312Hx1304V, supports complex on-chip operations - such as windowing, horizontal mirroring, vertical inversion, etc., and can read and write registers through a standard I2C interface, and the EFSYNC / FSYNC pins are used to externally control exposure.

[0044] Please refer to Figure 5 , Figure 6 , the infrared supplementary light and light sensing circuit 3 includes an infrared supplementary light interface, and the infrared supplementary light interface is connected to an external light sensing IC, an infrared supplementary light LED and a white supplementary light LED. When the light sensing IC detects a change in the external environment, it outputs the corresponding brightness change information to the SOC main control chip, and the SOC main control chip controls the infrared supplementary light LED or the white supplementary light LED to turn on or off according to the information processing result. In addition, the SOC main control chip will also send corresponding driving instructions to the filter driver circuit 4 according to the information processing result, and then drive the IRCUT filter to switch the display mode through the filter driver circuit 4. The IRCUT filter can switch the filter mode according to the ambient light conditions. During the day, it allows visible light to pass through, and at night or under low light conditions, it switches to a mode that allows infrared light to pass through.

[0045] Please refer to Figure 7, the pan-tilt motor drive circuit 5 is used to drive the horizontal and vertical motors in the pan-tilt camera to rotate, achieving full coverage of the monitoring area. For users of remote monitoring, the full monitoring capability provided by the pan-tilt motor drive circuit 5 enables them to view and control the monitoring screen more conveniently through the APP cloud.

[0046] Please refer to Figure 8 , the 4G communication circuit 6 is responsible for efficient and stable data transmission tasks, and can maintain the connection with the APP cloud in an extremely low-power mode when the device is in the sleep and keep-alive state, ensuring that it can be quickly awakened when a critical event occurs. This circuit integrates a high-performance 4G communication chip, which not only supports fast data exchange but also is equipped with a variety of peripheral interfaces, including UART, USB, USIM, AUDIO, PWM, ADC, SPI, I2C, etc., to meet the communication requirements in different scenarios. In the sleep state, the 4G communication circuit 6 will automatically switch to the low-power mode, effectively extending the overall usage time of the device while maintaining the keep-alive connection with the APP cloud, ensuring that users can receive important notifications or remotely wake up the device at any time. Once a preset event (such as motion detection, sound recognition, etc.) is triggered, the device will quickly wake up from sleep, and the image data processed by the SOC main control chip will be uploaded to the APP cloud in real time through the 4G communication circuit 6 for users to remotely view and store. Through the APP cloud interface, users can easily perform remote configuration and control of the pan-tilt camera, including adjusting the shooting angle of the camera, setting monitoring parameters, viewing historical videos, etc. These operation instructions are accurately transmitted to the SOC main control chip through the 4G communication circuit 6, realizing the intelligent management and control of the device.

[0047] Please refer to Figure 9 , the external circuit 7, as a key part of the extended system function, externally connects a control chip and an external interface. The external control chip is respectively connected to the main control circuit 1 and the external interface. The external interface is used to connect various external function modules, including but not limited to PIR human sensors, radar sensors, etc. The present utility model does not specifically limit the types of such external devices to ensure high flexibility and compatibility.

[0048] Taking the PIR human body sensor as an example, the external functional modules include the PIR human body sensor, radar sensor, etc., and the present utility model does not limit this. For example, when the external interface is connected to an external PIR human body sensor, the PIR human body sensor, based on passive infrared (PIR) technology, detects human activities by sensing the infrared rays emitted by the human body. The human body usually emits infrared rays with a specific wavelength (about 10 μm), and the pyroelectric infrared sensor of the human body can receive and process these signals to determine whether the human body is moving within the sensing range. When the device is in the sleep or normal working state, when the PIR human body sensor detects human activities around, it wakes up the 4G communication circuit 6 and reports the event to the APP cloud.

[0049] Similarly, when the external interface is connected to the radar sensor, the system can utilize the non-contact detection technology of the radar to further broaden the monitoring range and accuracy. The radar sensor detects moving objects, including the human body, by transmitting and receiving electromagnetic wave signals and analyzing the differences in the reflected waves, enabling the pan-tilt camera to maintain a high level of sensitivity and accuracy in complex environments and providing a more comprehensive and reliable monitoring solution for users.

[0050] Please refer to Figure 10 , in one embodiment, in order to enhance the independent operation ability and battery life performance of the 4G low-power pan-tilt camera, the 4G low-power pan-tilt camera circuit further includes a battery 8, a charging management circuit 9, and a DC-DC circuit 10. The DC-DC circuit 10 is respectively connected to the battery 8, the charging management circuit 9, and the main control circuit 1. The battery 8 is also connected to the charging management circuit 9, ensuring that the device can work stably and reliably when unattended or remotely deployed. The battery 8 serves as the energy source of the entire system and is used to provide continuous power support for all circuit modules. The charging management circuit 9 is used to achieve intelligent management and maintenance of the battery 8. The DC-DC circuit 10 is responsible for converting the voltage of the battery 8 into the stable working voltage required by each circuit module.

[0051] Please refer to Figure 11 , specifically, the charging management circuit 9 includes a charging management chip, a solar interface for connecting a solar battery pack, and a charging interface for connecting a charging adapter. The charging management chip is respectively connected to the solar interface, the charging interface, and the battery 8. The charging management chip is responsible for monitoring the charging status, current, voltage, and other parameters of the battery 8 to ensure a safe and efficient charging process. The solar interface and the charging interface provide users with flexible charging method options. The solar interface enables the device to connect to a solar battery pack and use solar energy, a clean and renewable energy source, to charge the battery 8, further enhancing the environmental friendliness and self-sufficiency ability of the device. The charging interface is used to connect a traditional charging adapter to ensure that the device can also be charged through the mains power when the light is insufficient or solar energy cannot be utilized.

[0052] Please refer to Figure 10 and Figure 12 In one embodiment, the 4G low-power pan-tilt camera circuit further includes a power-on / off circuit 11, and the power-on / off circuit 11 is connected to the main control circuit 1. The power-on / off circuit 11 is used to control the power-on and power-off of the system. Among them, the power-on / off circuit 11 mainly includes a switch SW1 and a MOS transistor. After pressing the switch SW1, the MOS transistor conducts, and the system is powered on.

[0053] Please refer to Figure 10 and Figure 13 In one embodiment, the 4G low-power pan-tilt camera circuit further includes an audio acquisition circuit 12, and the audio acquisition circuit 12 is connected to the main control circuit 1. The audio acquisition circuit 12 is used to collect surrounding audio data and transmit it to the SOC main control chip for processing. The SOC main control chip then uploads the processed audio data to the APP cloud or plays it locally through the 4G communication circuit 6.

[0054] Please refer to Figure 10 and Figure 14 In one embodiment, the 4G low-power pan-tilt camera circuit further includes an audio amplification circuit 13, and the audio amplification circuit 13 is connected to the main control circuit 1. The audio data received by the SOC main control chip is amplified by the audio amplification circuit 13 and played out in the form of a speaker.

[0055] Please refer to Figure 10 and Figure 15 In one embodiment, the 4G low-power pan-tilt camera circuit further includes a TF card circuit 14, and the TF card circuit 14 is connected to the main control circuit 1. The TF card circuit 14 is used to store data (videos, pictures, logs, etc.) or for device upgrade functions. When a new software version or firmware update is released, the user can store these update files in the TF card, and the main control circuit 1 will automatically detect the update files in the TF card and start the upgrade process.

[0056] Please refer to Figure 10 and Figure 16 In one embodiment, the 4G low-power pan-tilt camera circuit further includes a NOR Flash circuit 15, and the NOR Flash circuit 15 is connected to the main control circuit 1. The NOR Flash circuit 15 is used to store program codes, firmware, operating systems, and other data, and can achieve the fast startup and stable operation of the device.

[0057] Please refer to Figure 10 and Figure 17, in one embodiment, the 4G low-power pan-tilt camera circuit further includes a reset circuit 16, and the reset circuit 16 is connected to the main control circuit 1. The reset circuit 16 is used to restore the device to its factory settings. When the device has a configuration error, a software fault, or the user wishes to restore the device to its initial state, by activating the reset circuit 16, the device will clear all user-defined settings, configuration parameters, and possible software errors, and restore the system to the default state at the time of factory reset. In this way, the user can start configuring the device again or solve the previous problems through software upgrades and other means.

[0058] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations shall fall within the protection scope of the appended claims of the present utility model.

[0059] The above has made an exemplary description of the present utility model patent in conjunction with the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A 4G low-power PTZ camera circuit, characterized in that: It includes a main control circuit, an image sensor circuit, an infrared fill light and light sensing circuit, a filter driving circuit, a pan-tilt motor driving circuit, a 4G communication circuit and an external circuit. The main control circuit is respectively connected to the image sensor circuit, the infrared fill light and light sensing circuit, the filter driving circuit, the pan-tilt motor driving circuit, the 4G communication circuit and the external circuit. The external circuit includes an external control chip and an external interface for connecting an external functional module. The external control chip is respectively connected to the main control circuit and the external interface.

2. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes a battery, a charging management circuit and a DC-DC circuit. The DC-DC circuit is connected to the battery, the charging management circuit and the main control circuit respectively, and the battery is also connected to the charging management circuit.

3. The 4G low-power PTZ camera circuit according to claim 2, characterized in that: The charging management circuit includes a charging management chip, a solar interface for connecting to a solar cell group, and a charging interface for connecting to a charging adapter. The charging management chip is connected to the solar interface, the charging interface, and the battery respectively.

4. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes a power on / off circuit, which is connected to the main control circuit.

5. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes an audio acquisition circuit, which is connected to the main control circuit.

6. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes an audio amplifier circuit, which is connected to the main control circuit.

7. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes a TF card circuit, and the TF card circuit is connected to the main control circuit.

8. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes a NOR Flash circuit, which is connected to the main control circuit.

9. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: It also includes a reset circuit, which is connected to the main control circuit.

10. The 4G low-power PTZ camera circuit according to claim 1, characterized in that: The external functional module includes a PIR human body sensor or a radar sensor.

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