Shared power bank with camera detection function

Abstract

The invention discloses a shared power bank with a camera detection function, and relates to the technical field of shared power bank equipment. A control mainboard is arranged in the lower shell, a main control module, a power management module and a multi-mode camera detection module are arranged on the control mainboard, and the main control module is connected with the power management module and the multi-mode camera detection module; the multi-mode camera detection module comprises a reflective mark capturing unit, an infrared light source detection unit and a thermal infrared imaging unit, a hidden camera can be better highlighted by arranging a light supplementing lamp so that the hidden camera can be conveniently detected by an infrared light sensitive triode, and the detection success rate of the hidden camera is improved by arranging a far infrared thermal sensor. Therefore, the detection efficiency of the hidden camera is effectively improved, and the personal privacy is better protected.

Description

Technical Field

[0001] The present invention relates to a shared power bank with camera detection, and relates to the technical field of shared power bank equipment. Background Art

[0002] When using electronic devices such as mobile phones, it is inevitable that they will run out of power. When a charger cannot be used to charge the electronic devices, a power bank is usually used to charge the electronic devices.

[0003] Power banks are divided into personal power banks and shared power banks according to their nature. However, the functionality of both personal power banks and shared power banks is relatively simple, especially shared power banks, which are weaker than personal power banks in terms of functionality. In order to enrich the functionality of power banks, existing power banks have added some functional modules. For example, the patent technology with announcement number CN115733213A discloses a smart power bank with camera detection and positioning capabilities, which relates to the technical field of smart power banks. The smart power bank with camera detection and positioning capabilities includes a power bank bottom cover, a charging and discharging module, and a camera detection module. The charging and discharging module includes an SW6208 main control chip, which is respectively connected to an interface switch component, a lithium battery, and a display screen. The camera detection module includes an STM32f103CBT6 main control chip, which is respectively connected to a component component, a Bluetooth communication module, and a WIFI module. The Bluetooth communication module is connected to a mobile phone APP. The present invention is highly integrated with the power bank, cleverly integrating camera detection and power bank into one, which has the advantages of small size, easy portability, high precision, anti-loss, simple operation, and the ability to directly understand the detection results and locate the camera position through a mobile phone. However, the camera detection method in this solution is relatively single, and only has an infrared detection function. As the camera functions increase, the single detection method often misses or detects incorrectly, causing accidents when people go out to peek at the camera, resulting in the leakage of personal privacy. In addition, since this solution is used on personal power banks, it has fewer usage scenarios. With the popularization of shared power banks, shared power banks will also encounter the same problem when used. Therefore, a shared power bank with camera detection is proposed to solve the problems existing in the existing technology. Summary of the Invention

[0004] The purpose of the present invention is to address the defects or shortcomings in the existing technology and provide a shared power bank with camera detection. By setting a fill light, the hidden camera can be better highlighted to facilitate detection by an infrared light-sensitive transistor, and a far-infrared thermal sensor is set to improve the success rate of hidden camera detection, thereby effectively improving the detection efficiency of hidden cameras and better protecting personal privacy.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: it includes a power bank body 1, the power bank body 1 includes an upper shell 11 and a lower shell 12, a control main board 2 is provided in the lower shell 12, and a main control module 21, a power management module 22, and a multimodal camera detection module 23 are provided on the control main board 2. The main control module 21 is connected to the power management module 22 and the multimodal camera detection module 23. The multimodal camera detection module 23 includes a reflective mark capture unit 231, an infrared light source detection unit 232, and a thermal infrared imaging unit 233.

[0006] Furthermore, the main control module 21 adopts an STM32F405RGT6 microcontroller.

[0007] Furthermore, the power management module 22 adopts a Boost-Buck topology based on the IP5389 chip and uses I 2 C protocol to communicate with the main control module 21, supports PD3.0 / QC4+ protocol, and the input / output voltage range is 5-20V.

[0008] Furthermore, the reflective mark capturing unit 231 is a fill light array formed by eight 940nm infrared LED fill lights, each infrared LED fill light is connected in parallel, and each infrared LED fill light is connected in series with a resistor.

[0009] Furthermore, the infrared light source detection unit 232 adopts a differential infrared signal acquisition circuit based on dual PT334-6C infrared sensitive transistors. The collector of each PT334-6C transistor is connected in series with a 2kΩ load resistor, and the ADC sampling voltage range is 0.9-3.3V, covering a wavelength of 400-1100nm.

[0010] Furthermore, the thermal infrared imaging unit 233 uses an MLX90640 far-infrared sensor to generate 32×24 pixel thermal distribution data.

[0011] Furthermore, a display screen 3 is provided on the upper housing 11 , and the display screen 3 communicates with the main control module 21 via an SPI interface connection.

[0012] Furthermore, a rechargeable lithium battery is provided at the bottom of the control main board 2 , and two USB-A interfaces and one TYPE-C interface are provided on the control main board 2 to be connected to the power management module 22 .

[0013] Furthermore, the main control module 21 expands the original data to 160×120 pixels through bilinear interpolation and displays it on the display screen 3.

[0014] Furthermore, a charging contact is provided at one end of the control main board 2 away from the reflective mark capturing unit 231 .

[0015] After adopting the above technical solution, the beneficial effects of the present invention are: by setting a fill light, the hidden camera can be better highlighted to facilitate detection by the infrared light sensitive transistor, and a far-infrared thermal sensor is set to improve the success rate of hidden camera detection, thereby effectively improving the detection efficiency of hidden cameras and better protecting personal privacy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 Schematic diagram of the internal structure of the lower housing 12 in the present invention;

[0019] Figure 3 Schematic diagram of the circuit principle of the main control module 21 in the present invention;

[0020] Figure 4 Schematic diagram of the circuit principle of the power management module 22 in the present invention;

[0021] Figure 5 Schematic diagram of the circuit principle of the reflective mark capturing unit 231 of the present invention;

[0022] Figure 6 Schematic diagram of the circuit principle of the infrared light source detection unit 232 of the present invention;

[0023] Figure 7 Schematic diagram of the circuit principle of the thermal infrared imaging unit 233 of the present invention;

[0024] Figure 8 It is a schematic framework diagram of the working principle of the present invention;

[0025] Figure 9 yes Figure 1 Second angle view of .

[0026] Explanation of the accompanying reference numerals: power bank body 1, control main board 2, display screen 3, upper shell 11, lower shell 12, main control module 21, power management module 22, multimodal camera detection module 23, reflective mark capture unit 231, infrared light source detection unit 232, thermal infrared imaging unit 233. DETAILED DESCRIPTION

[0027] See Figures 1-9 As shown, the technical solution adopted in this specific embodiment is: it includes a power bank body 1, the power bank body 1 includes an upper shell 11 and a lower shell 12, a control motherboard 2 is arranged in the lower shell 12, and a main control module 21, a power management module 22, and a multi-modal camera detection module 23 are arranged on the control motherboard 2, the main control module 21 is connected to the power management module 22 and the multi-modal camera detection module 23, the multi-modal camera detection module 23 includes a reflective mark capture unit 231, an infrared light source detection unit 232, and a thermal infrared imaging unit 233. Traditional shared power banks usually only have a charging function, and shared power banks are often used in public places such as hotels. In order to protect personal privacy, camera detectors are often used to detect hidden cameras. Existing shared power banks do not have this function, and the existing technology people's personal power banks use simple detection function, but because the function is too single, the detection effect is not good. Therefore, in this embodiment, multiple detection structures are set on the shared power bank to detect different forms of hidden cameras. It can be understood that the technical solution of this embodiment is not only applied to shared power banks, but also to personal power banks, and can also protect personal privacy when the user goes out. Specifically, in this embodiment, the main control module is the "brain" of the device operation, and undertakes core tasks such as algorithm processing, communication scheduling, and status monitoring. It controls the multi-modal camera detection module and starts the multi-modal camera detection module by pressing the power button on the side of the power bank body. Among them, the reflective mark capture unit 231 is a fill light array formed by eight 940nm infrared LED fill lights, each infrared LED fill light is connected in parallel, and each infrared LED fill light is connected in series with a resistor;

[0028] The infrared light source detection unit 232 uses a differential infrared signal acquisition circuit based on dual PT334-6C infrared sensitive transistors. The collector of each PT334-6C transistor is connected in series with a 2kΩ load resistor. The ADC sampling voltage range is 0.9-3.3V, covering a wavelength of 400-1100nm. The PT334-6C senses the camera's infrared supplementary light source, which is invisible to the human eye in dark environments. The sensing range is 400-1100nm wavelength. The ADC collects the collector voltage to determine the intensity of the infrared light source, preventing accidental touches such as infrared remote controls.

[0029] The thermal infrared imaging unit 233 uses the MLX90640 far-infrared sensor to generate 32×24 pixel thermal distribution data;

[0030] First, eight 940nm infrared LED fill lights emit infrared light of a fixed wavelength. In dark environments, only the specific wavelength of the fill light source is allowed to pass through, filtering out ambient stray light and highlighting reflective spots. In actual use, it can be used in conjunction with a filter to block light. When the infrared light emitted by the fill light shines on the hidden camera, it reflects a bright spot that is invisible to the naked eye, which is displayed on the filter, allowing the hidden camera to be detected.

[0031] Secondly, the infrared light emitted by the camera is detected by dual PT334-6C infrared sensitive transistors. The main control module synchronously collects ADC voltage values in two channels at a sampling rate of 10kHz. When the voltage of any channel is greater than 2.5V and the difference between the two channels is less than 0.2V, it is determined to be infrared fill light from the camera (excluding remote control pulse interference).

[0032] Third, the MLX90640 sensor generates thermal distribution data at a 4Hz refresh rate, and the main control module uses a bilinear interpolation algorithm to expand the 32×24 raw data to 160×120 pixels;

[0033] Calibration temperature threshold: +3°C (±0.5°C) based on ambient temperature is used as the criterion for suspected targets;

[0034] Heat source positioning accuracy: error <5cm within a distance of 0.5m, temperature resolution 0.1°C, and the ability to display when a hidden camera is detected. The three detection structures and usage methods can detect most hidden cameras, thereby better protecting personal privacy. At the same time, by setting up a detection structure on the shared power bank, it can be suitable for detecting hidden cameras in more scenarios, with better practicality and functionality.

[0035] In addition, the power bank of this embodiment supports 100W fast charging. The main control module 21 adopts the STM32F405RGT6 microcontroller, and the power management module 22 adopts the Boost-Buck topology based on the IP5389 chip. 2 C protocol to communicate with the main control module 21, supports PD3.0 / QC4+ protocol, and the input / output voltage range is 5-20V;

[0036] In specific implementations, the IP5389 chip drives an H-bridge topology and supports dynamic power distribution. The Q1-Q7 MOSFETs form an H-bridge and support Buck-Boost bidirectional conversion. In Boost mode (input < output), Q1 / Q2 are turned on, and the energy stored in inductor L1 is released to the output through Q3 / Q4. In Buck mode (input > output), Q3 / Q4 are turned on, and inductor L1 filters and steps down the voltage. Bidirectional conversion achieves buck-boost control.

[0037] At the same time, Q5-Q7 are synchronous rectification MOSFETs that replace traditional diodes to reduce conduction losses (efficiency improvement of 5%-8%).

[0038] The cooperation between the main control module and the power management module can effectively realize overcurrent protection, overvoltage protection and overheating protection;

[0039] The STM32F405RGT6 chip sets the charging parameters through pins, and the IP5389 chip sets the charging parameters through I 2 C protocol to communicate with the STM32F405RGT6 chip, send an interrupt signal to the STM32F405RGT6, trigger the ADC to collect the charge and discharge status, realize collaborative cooperation, and achieve 100W output.

[0040] To be more specific, a display screen 3 is provided on the upper shell 11, and the display screen 3 communicates with the main control module 21 via an SPI interface. The display screen can display the thermal imaging situation and can also issue a bright spot alarm for the detected camera.

[0041] To be more specific, a rechargeable lithium battery is provided at the bottom of the control motherboard 2, and two USB-A interfaces and one TYPE-C interface are provided on the control motherboard 2 to be connected to the power management module 22. The multi-interface setting facilitates the connection and use of multiple devices. At the same time, multiple data cables are provided on the back of the power bank for selection, and the power level of the rechargeable lithium battery is displayed on the display screen.

[0042] More specifically, the main control module 21 expands the original data to 160×120 pixels through bilinear interpolation and displays it on the display screen 3. The main control module generates a thermal imaging picture using a bilinear interpolation algorithm for the collected data and sends it to the display screen for display through the SPI1 interface.

[0043] To be more specific, the control main board 2 is provided with a charging contact at one end away from the reflective mark capturing unit 231 , and the charging contact is mainly used for charging in a shared power bank charging cabinet.

[0044] The working principle of the present invention is as follows: when the power bank is taken out for use, charging can be started by connecting the data cable. Any one of the two USB-A interfaces and one TYPE-C interface can be selected for use. The power management module 22 controls the 100W two-way fast charging. When the power button is pressed, the detection module can be started to detect the camera. When the ambient light is insufficient, the eight infrared LED fill lights of the reflective mark capture unit 231 can emit fill light to illuminate the detection area. When there is a hidden camera in the detection area, the light is reflected to form a bright spot. The infrared light source detection unit 232 simultaneously captures the infrared light emitted by the camera and the reflected light spot, and feeds the detection information back to the main control module 21. The main control module 21 expands the original data to 160×120 pixels through bilinear interpolation and displays it on the display screen 3. Synchronously, the thermal infrared imaging unit 233 scans the thermal distribution, generates thermal imaging raw data, and displays it on the display screen 3. The double detection and fill light form reflective points on the hidden camera, which can effectively realize the detection of hidden cameras and better protect personal privacy.

[0045] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A shared power bank with camera detection, characterized by: The invention comprises a power bank main body (1), wherein the power bank main body (1) comprises an upper shell (11) and a lower shell (12); a control main board (2) is arranged in the lower shell (12); a main control module (21), a power management module (22), and a multi-modal camera detection module (23) are arranged on the control main board (2); the main control module (21) is connected to the power management module (22) and the multi-modal camera detection module (23); and the multi-modal camera detection module (23) comprises a reflective mark capturing unit (231), an infrared light source detection unit (232), and a thermal infrared imaging unit (233).

2. A shared power bank with camera detection according to claim 1, characterized in that: The main control module (21) adopts the STM32F405RGT (6) microcontroller.

3. A shared power bank with camera detection according to claim 1, characterized in that: The power management module (22) adopts a Boost-Buck topology based on the IP5389 chip and uses I 2 C protocol to communicate with the main control module (21), supports PD3.0 / QC4+ protocol, and has an input / output voltage range of 5-20V.

4. A shared power bank with camera detection according to claim 1, characterized in that: The reflective mark capturing unit (231) is a fill light array formed by eight 940nm infrared LED fill light lamps, each infrared LED fill light lamp is connected in parallel, and each infrared LED fill light lamp is connected in series with a resistor.

5. The shared power bank with camera detection according to claim 1, characterized in that: The infrared light source detection unit (232) adopts a differential infrared signal acquisition circuit based on dual PT334-6C infrared sensitive transistors, the collector of each PT334-6C transistor is connected in series with a 2kΩ load resistor, the ADC sampling voltage range is 0.9-3.3V, and covers a wavelength of 400-1100nm.

6. A shared power bank with camera detection according to claim 1, characterized in that: The thermal infrared imaging unit (233) uses an MLX90640 far-infrared sensor to generate 32×24 pixel thermal distribution data.

7. The shared power bank with camera detection according to claim 1, characterized in that: The upper housing (11) is provided with a display screen (3), and the display screen (3) communicates with the main control module (21) via an SPI interface connection.

8. The shared power bank with camera detection according to claim 1, characterized in that: A rechargeable lithium battery is provided at the bottom of the control main board (2), and two USB-A interfaces and a TYPE-C interface are provided on the control main board (2) to be connected to the power management module (22).

9. The shared power bank with camera detection according to claim 1, characterized in that: The main control module (21) expands the original data to 160×120 pixels through bilinear interpolation and displays it on the display screen (3).

10. The shared power bank with camera detection according to claim 1, characterized in that: The control main board (2) is provided with a charging contact at one end away from the reflective mark capturing unit (231).

Images