Display screen with pyroelectric sensing structure

Abstract

The invention discloses a display screen with a pyroelectric sensing structure, which belongs to the technical field of display screens, and comprises a display screen main body, a sensor module, a processor module, a display screen control module, a data storage module and a temperature detection module, the sensor module comprises an ambient light sensor, four pyroelectric sensors, four infrared sensors and four ultrasonic sensors; the ambient light sensor, the four pyroelectric sensors, the four infrared sensors and the four ultrasonic sensors are all connected to the front surface of the display screen main body; according to the invention, under the control of the time period, the display screen enters a low-power-consumption standby state when nobody is in the daytime and is completely closed when nobody is in the night, so that the energy waste is effectively avoided, the display mode and power consumption are adjusted according to the ambient light, and the energy consumption is further reduced; the false triggering rate of a single sensor is reduced, the personnel activity and the environment state are accurately judged, and the system reliability is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of display screens, and particularly relates to a display screen with a pyroelectric induction structure. Background Art

[0002] At present, many advertising screens and bulletin screens on the market are distributed in elevators, corridor halls, etc. in residential areas and commercial areas, and play advertisements, promotional videos, etc. 24 hours a day. Since these devices are unattended, they often work continuously for 24 hours. However, commercial areas are not open for 24 hours, and there are no advertising audiences in residential areas all the time. Therefore, these devices work continuously during the periods when there is no one watching or no activity, seriously wasting electric energy. At present, most of the means are to manually turn off the power of the devices. Since the devices belong to different commercial entities, there are disputes over jurisdiction. Moreover, in some places where there are people activities 24 hours a day, although advertisers also hope to save electricity, they do not want the devices to be turned off when there are people. Therefore, a display screen with a pyroelectric induction structure is needed to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a display screen with a pyroelectric induction structure to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A display screen with a pyroelectric induction structure, including a display screen main body, a sensor module, a processor module, a display screen control module, a data storage module, and a temperature detection module. The sensor module includes an ambient light sensor, four pyroelectric sensors, four infrared sensors, and four ultrasonic sensors. The ambient light sensor, four pyroelectric sensors, four infrared sensors, and four ultrasonic sensors are all connected to the front of the display screen main body; The processor module includes a central processor, a memory, a sensor data input interface, a clock module, a control signal output interface, and a data transmission interface. The sensor data input interface includes multiple interfaces respectively connected to the light sensor, pyroelectric sensor, infrared sensor, and ultrasonic sensor; The control signal output interface and the data transmission interface are respectively connected to the display screen control module and the data storage module; The temperature detection module is connected to the display screen control module. The temperature detection module uses a high-precision temperature sensor and can keenly capture the temperature change generated by the display screen during operation.

[0005] As a preferred solution, the ambient light sensor is set as a silicon photodiode type ambient light sensor, and the ambient light sensor is arranged in the middle above the display part of the display screen.

[0006] As a preferred solution, the pyroelectric sensor is a thermopile-type pyroelectric sensor, and four pyroelectric sensors are arranged on both sides above and below the display area of the display screen.

[0007] As a preferred solution, the infrared sensor is an infrared sensor based on the principle of laser triangulation.

[0008] As a preferred solution, the ultrasonic sensor is a transceiver-integrated ultrasonic sensor.

[0009] As a preferred solution, four infrared sensors are arranged on both sides of the display area of the display screen, and four ultrasonic sensors are arranged at the four corners of the display area of the display screen.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, under time period control, when there is no one during the day, the display screen enters low-power standby, and when there is no one at night, it is completely turned off, effectively avoiding energy waste. In environmental condition control, the display mode and power consumption are adjusted according to the ambient light, further reducing energy consumption and achieving the energy-saving goal, saving energy and increasing efficiency. Moreover, with multi-sensor fusion and weighted fusion algorithms, the data of pyroelectric, infrared, ultrasonic, and ambient light sensors are integrated, reducing the false trigger rate of a single sensor, accurately judging personnel activities and environmental states, and improving the reliability of the system. And through the mode control logic, the system can intelligently adjust the working state of the display screen according to the time period, environmental conditions, and user behavior patterns. The learning mode can also automatically optimize the control strategy, adapt to different scenarios and user habits, provide personalized services, and the data encryption uses the AES algorithm to ensure the security of data transmission and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a front three-dimensional structural schematic diagram of the present invention; Figure 2 is a system diagram of the present invention; Figure 3 is a sensor module diagram of the present invention; Figure 4 is a processor module diagram of the present invention; Figure 5 is a display screen control module diagram of the present invention; Figure 6 is a flowchart of the present invention.

[0012] In the figure: 1, display screen main body; 2, sensor module; 21, ambient light sensor; 22, pyroelectric sensor; 23, infrared sensor; 24, ultrasonic sensor; 3, processor module; 4, display screen control module; 5, data storage module; 6, temperature detection module. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present invention will be further described below in conjunction with embodiments.

[0014] The following embodiments are used to illustrate the present invention, but cannot be used to limit the protection scope of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions. Any simple improvement of the method of the present invention under the premise of the concept of the present invention belongs to the scope claimed by the present invention.

[0015] Please refer to Figure 1-6 , the present invention provides a display screen with a pyroelectric induction structure, including a display screen main body 1, a sensor module 2, a processor module 3, a display screen control module 4, a data storage module 5, and a temperature detection module 6. The sensor module 2 includes an ambient light sensor 21, four pyroelectric sensors 22, four infrared sensors 23, and four ultrasonic sensors 24. The ambient light sensor 21, four pyroelectric sensors 22, four infrared sensors 23, and four ultrasonic sensors 24 are all connected to the front of the display screen main body 1; The processor module 3 includes a central processor, a memory, a sensor data input interface, a clock module, a control signal output interface, and a data transmission interface. The sensor data input interface includes multiple interfaces respectively connected to the light sensor, the pyroelectric sensor 22, the infrared sensor 23, and the ultrasonic sensor 24. The processor module 3 includes a central processor, a memory, a sensor data input interface, a clock module, a control signal output interface, and a data transmission interface. The central processor serves as the operation and control center of the entire processor module 3, responsible for executing various complex instructions, such as data fusion algorithms, pattern control logic operations, etc. A low-power and high-performance central processor can be selected, which has powerful computing capabilities and rich peripheral interfaces, and can efficiently process multi-sensor data and system control tasks; the memory is used to temporarily store the running programs and data, ensuring that the central processor can quickly read and write data, improving the system operation efficiency. A high-speed memory chip is adopted and connected to the central processor through the data bus and the address bus to achieve high-speed data transmission; the clock module adopts a high-precision real-time clock chip and is connected to the central processor through the I2C bus; the control signal output interface converts the control signals generated by the central processor, such as backlight brightness adjustment signals, display content switching signals, hue adjustment signals, etc., and after level conversion and drive enhancement, transmits them to the display screen control module 4; The control signal output interface and the data transmission interface are respectively connected to the display screen control module 4 and the data storage module 5. The display screen control module 4 includes a backlight driving module, a display data buffer, and a display screen interface. The backlight driving module is responsible for controlling the brightness of the display screen backlight according to the backlight brightness adjustment signal transmitted from the processor module 3. The backlight driving module uses a PWM dimming backlight driving chip. The display data buffer is used to temporarily store the image data to be displayed, ensuring the smoothness of the display. The display data buffer is connected to the central processor through a data bus. The GPU writes the processed display data into the backlight driving module, and then the backlight driving module outputs the data to the display interface of the display screen according to the refresh rate of the display screen. The display screen interface circuit: This circuit converts the display data and control signals output by the central processor into a signal form suitable for the display screen interface. The temperature detection module 6 is connected to the display screen control module 4. The temperature detection module uses a high-precision temperature sensor, which can sensitively capture the temperature changes generated by the display screen during operation. The temperature sensor outputs the monitored temperature data in the form of an electrical signal and transmits it to the display screen control module 4 through a dedicated signal transmission line. In the display screen control module 4, there is a dedicated data processing unit, which can quickly process and analyze the received temperature data. When the temperature detection module 6 monitors that the temperature of the display screen main body 1 exceeds the pre-set safety threshold, the display screen control module 4 will immediately take corresponding measures: Specifically, the display screen control module 4 will automatically reduce the working power of the display screen main body 1 according to the temperature data. This operation is achieved by adjusting the backlight driving module of the display screen main body 1. For example, the backlight brightness is reduced to reduce its energy consumption, thereby reducing the overall heat generation of the display screen and further reducing heat production.

[0016] Through such a temperature monitoring and control mechanism, not only can the temperature of the display screen during operation be effectively reduced, avoiding problems such as performance degradation and accelerated component aging caused by excessive temperature, but also the energy consumption can be significantly reduced, achieving the effect of energy conservation and emission reduction. This makes the display screen main body 1 not prone to overheating during long-term operation, extending the service life of the display screen, and at the same time conforming to the current development trend of green environmental protection, energy conservation and consumption reduction. The ambient light sensor 21 is set as a silicon photodiode type ambient light sensor 21. By setting the ambient light sensor 21, the ambient light sensor 21 is a silicon photodiode type ambient light sensor 21, which responds quickly to changes in ambient light intensity and has high measurement accuracy. The ambient light sensor 21 is provided at the middle part above the display area of the display screen. The pyroelectric sensor 22 is a thermopile-type pyroelectric sensor 22. By setting the pyroelectric sensor 22, the thermopile-type pyroelectric sensor 22 with high precision is selected, which has the characteristics of high sensitivity and fast response speed, and can accurately detect the infrared ray changes emitted by the human body, so as to effectively sense the activities of personnel. Four pyroelectric sensors 22 are provided on both sides above and below the display area of the display screen. The infrared sensor 23 is an infrared sensor 23 based on the principle of laser triangulation. By setting the infrared sensor 23, the infrared sensor 23 based on the principle of laser triangulation is adopted, which can accurately measure the distance and movement trajectory of an object. The ultrasonic sensor 24 is a transceiver-integrated ultrasonic sensor 24. Four infrared sensors 23 are provided on both sides of the display area of the display screen, and four ultrasonic sensors 24 are provided at the four corners of the display area of the display screen. By setting the ultrasonic sensor 24, the transceiver-integrated ultrasonic sensor 24 is selected, which has a wide detection range and can effectively make up for the deficiencies of the pyroelectric sensor 22 in terms of detection breadth and angle.

[0017] The working principle and usage process of the present invention: In the multi-sensor fusion part, the pyroelectric sensor 22, the infrared sensor 23, the ultrasonic sensor 24, and the ambient light sensor 21 continuously collect the surrounding environment data and transmit the data to the processor. The processor performs weighted calculation on the data of each sensor through a fusion algorithm to obtain a comprehensive perception result, and judges whether there is anyone's activity based on this. In terms of the mode control logic, the clock module provides time information, combines with the sensor data, and automatically adjusts the working state of the display screen according to different time periods, environmental conditions, and user behavior patterns. In terms of data security and privacy protection, data encryption ensures the security of data during transmission and storage. Through the collaborative work of the above parts, the intelligent energy-saving, safe and reliable operation of the display screen module is realized.

[0018] Among them, the fusion algorithm includes data acquisition, weight assignment, and comprehensive calculation. Data acquisition: Each sensor collects data at a set frequency. For example, the pyroelectric sensor 22 collects data once every 100 ms, the infrared sensor 23 collects data once every 50 ms, the ultrasonic sensor 24 collects data once every 200 ms, and the ambient light sensor 21 collects data once every 500 ms, and transmits the detected data to the processor in real time. Weight assignment: Determine the weights through experiments and data analysis based on the performance of each sensor in different scenarios; in the crowded conference room scenario, the weight of the pyroelectric sensor 22 is set to 0.4 because of its high accuracy in human detection; the weight of the infrared sensor 23 is set to 0.3 to assist in confirming the specific location of people; the weight of the ultrasonic sensor 24 is set to 0.3 to detect the movement of people in a large range. In the outdoor advertising display scenario, the weight of the pyroelectric sensor 22 is set to 0.3, the weight of the infrared sensor 23 is set to 0.2, the weight of the ultrasonic sensor 24 is set to 0.2, and the weight of the ambient light sensor 21 is set to 0.3 because the ambient light has a greater impact on the display effect of the display screen; Comprehensive calculation: The processor uses the weighted average method to fuse and calculate the data of each sensor. The calculation formula is: S = w1×D1 + w2×D2 + w3×D3 + w4×D4, where S is the comprehensive perception result, w1 - w4 are the weights of the pyroelectric sensor 22, infrared sensor 23, ultrasonic sensor 24, and ambient light sensor 21 respectively, and D1 - D4 are the data values collected by each sensor; when S exceeds the preset threshold, it is determined that there is human activity; otherwise, it is determined that there is no human activity; Among them, the mode control logic includes time period control, mode setting, environmental condition control, user behavior mode control, and learning mode; Time period control: The clock module is set as a high-precision real-time clock chip, which can accurately record time. The clock chip communicates with the processor through the I2C bus to ensure time synchronization; Mode setting: In the program of the processor module 3, the time periods of 6:00 - 18:00 during the day and 18:00 - 6:00 at night are preset. During the day, if human activity is detected, the processor controls the backlight drive circuit of the display screen to keep the display screen at normal brightness. When there is no human activity for 1 minute, the processor controls the display screen to enter the low-power standby mode, at this time, the backlight brightness is reduced, and the display content is switched to simple information such as time and date. At night, when there is human activity, the processor adjusts the backlight drive circuit to automatically reduce the brightness of the display screen to a suitable level for night viewing, such as 30% of the daytime brightness. When there is no human activity, the processor directly turns off the backlight circuit of the display screen to completely turn off the display screen; Environmental condition control: The ambient light sensor 21 collects ambient light intensity data in real time and converts it into a digital signal to transmit to the processor. The temperature sensor uses a digital temperature sensor and is connected to the processor through the SPI bus to collect indoor temperature data in real time; Among them, the user behavior mode control includes data monitoring and mode adjustment; Data Monitoring: The system continuously monitors the user's behavior by recording the user's operation behaviors on the display screen, such as touch operations, button operations, etc., and the personnel activity conditions detected by sensors. The data is stored in the built-in flash memory of the processor, and the storage format is CSV format for easy data analysis; Mode Adjustment: After a week of monitoring, if it is found that the user frequently operates the display screen during the period from 9:00 to 12:00 on weekdays, the processor extends the standby time after no personnel activity during this period from the default 1 minute to 3 minutes. If it detects that the user is stationary for a long time, such as more than 30 minutes, the processor controls the display screen to enter the low-power mode, reducing the backlight brightness and the working frequency of the central processing unit; when it detects that the user is active again, the processor quickly restores the normal working state of the display screen; Among them, the learning mode includes data collection and algorithm application. Data Collection: The system continuously collects personnel activity data, display screen working state data, and energy consumption data under different time periods and environmental conditions; The data is stored in an external SD card once a day for long-term data accumulation; Algorithm Application: The processor analyzes the stored data regularly, such as once a week, and uses the decision tree algorithm to construct a relationship model between user behavior, environmental conditions, and the working mode of the display screen; Among them, data security and privacy protection include data encryption and privacy data processing; Data Encryption: During the data transmission process, a secure connection is established using the SSL / TLS protocol to ensure the security of the data during transmission; When storing data, full disk encryption is performed on the data stored in the flash memory and the SD card; Privacy Data Processing: The user activity trajectory data, personal operation habit data, etc. detected by the sensor are defined as privacy data; The non-personal related data such as ambient light intensity and temperature are defined as non-privacy data; Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A display screen with a pyroelectric induction structure, comprising a display screen main body (1), a sensor module (2), a processor module (3), a display screen control module (4), a data storage module (5) and a temperature detection module (6), characterized in that: The sensor module (2) includes an ambient light sensor (21), four pyroelectric sensors (22), four infrared sensors (23), and four ultrasonic sensors (24). The ambient light sensor (21), the four pyroelectric sensors (22), the four infrared sensors (23), and the four ultrasonic sensors (24) are all connected to the front of the display screen main body (1). The processor module (3) includes a central processor, a memory, a sensor data input interface, a clock module, a control signal output interface, and a data transmission interface. The sensor data input interface includes multiple interfaces respectively connected to the light sensor, the pyroelectric sensor (22), the infrared sensor (23), and the ultrasonic sensor (24). The control signal output interface and the data transmission interface are respectively connected to the display screen control module (4) and the data storage module (5). The temperature detection module (6) is connected to the display screen control module (4).

2. The display screen with a pyroelectric induction structure according to claim 1, wherein: The ambient light sensor (21) is set as a silicon photodiode type ambient light sensor (21), and the ambient light sensor (21) is arranged at the middle position above the display part of the display screen.

3. The display screen with a pyroelectric induction structure according to claim 1, characterized in that: The pyroelectric sensor (22) is set as a thermopile type pyroelectric sensor (22), and the four pyroelectric sensors (22) are arranged on both sides above and below the display part of the display screen.

4. A display screen with a pyroelectric induction structure according to claim 1, characterized in that: The infrared sensor (23) is set as an infrared sensor (23) based on the laser triangulation principle.

5. The display screen with a pyroelectric induction structure according to claim 1, characterized in that: The ultrasonic sensor (24) is set as a transceiver integrated ultrasonic sensor (24).

6. The display screen with a pyroelectric induction structure according to claim 1, characterized in that: The four infrared sensors (23) are arranged on both sides of the display part of the display screen, and the four ultrasonic sensors (24) are arranged at the four corners of the display part of the display screen.

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