Bookcase based on environmental perception

Abstract

The utility model discloses a bookcase based on environmental perception, which comprises a bookcase body and a plurality of book grids, each book grid corresponds to a bookcase door, a control chip is arranged in the bookcase body, and a display screen, card swiping equipment, code scanning equipment and a light sensor which are connected with the control chip are arranged on the outer surface of the bookcase body. The control chip is connected with the light sensor through the signal processing circuit; the signal processing circuit comprises a voltage comparator and a logic gate circuit, the output end of the light sensor is connected with the inverted input end of the voltage comparator, the normal phase input end of the voltage comparator is vacant, the output end of the voltage comparator is connected with the input end of the logic gate circuit, and the logic gate circuit is connected with the output end of the light sensor. And the output end of the logic gate circuit is connected with one universal input / output pin of the control chip. According to the intelligent bookcase, the bookcase can intelligently sense the ambient light, the brightness of the display screen of the bookcase can be automatically adjusted according to the environment change through the environment sensing capacity, and therefore energy consumption is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of bookcase technology, and in particular relates to a bookcase based on environmental perception. Background Technology

[0002] With technological advancements, some existing bookshelves are equipped with electronic devices such as displays, making book management more intelligent. However, the brightness of these displays is often fixed, lacking environmental awareness and limiting their usability. For example, low-brightness displays become difficult to see in bright sunlight due to interference, while high-brightness displays are excessively glaring in dim light. Both negatively impact the book access experience. Furthermore, consistently high brightness not only consumes more energy but also shortens the lifespan of internal components. While some displays offer brightness adjustments, these often require manual adjustment, which is cumbersome. Summary of the Invention

[0003] The purpose of this invention is to address the problems existing in the prior art by providing an environmentally-aware bookshelf, which solves the problem that existing bookshelves with electronic display components such as screens lack environmental awareness and are difficult to automatically adjust brightness.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an environmentally perceptive bookcase, comprising a cabinet body and multiple book compartments, each book compartment corresponding to a cabinet door, wherein a control chip is provided inside the cabinet body, and a display screen, a card reader, a barcode scanner, and a light sensor are provided on the outer surface of the cabinet body and connected to the control chip; the control chip is connected to the light sensor through a signal processing circuit.

[0005] The signal processing circuit includes a voltage comparator and a logic gate circuit. The output terminal of the light sensor is connected to the inverting input terminal of the voltage comparator, the non-inverting input terminal of the voltage comparator is left unconnected, the output terminal of the voltage comparator is connected to the input terminal of the logic gate circuit, and the output terminal of the logic gate circuit is connected to the input / output port of the control chip.

[0006] In the above technical solution, by integrating a light sensor, a control chip, and a signal processing circuit into the bookcase, the bookcase achieves intelligent perception of ambient light. This environmental perception capability enables the bookcase to automatically adjust the brightness of the display screen according to environmental changes, thereby effectively reducing energy consumption. Furthermore, the signal processing circuit composed of a voltage comparator and logic gate circuits effectively processes the light sensor signal. This design can accurately trigger the corresponding control logic according to the ambient light, improving the system's response speed and accuracy, and providing a foundation for reducing energy consumption.

[0007] As a further technical means, an infrared sensor is also provided on the outer surface of the cabinet. The output terminal of the infrared sensor is connected to the first input terminal of the logic gate circuit, the second input terminal of the logic gate circuit is connected to the output terminal of the voltage comparator, and the first input terminal of the logic gate circuit is also connected to the input / output port of the control chip.

[0008] In the above technical solution, by installing an infrared sensor on the outer surface of the cabinet and connecting it to the signal processing circuit, the bookcase can not only change its brightness according to the lighting environment, but also adjust the working status of the display screen by sensing the proximity of a person, thereby further reducing energy consumption.

[0009] As a further technical means, an electric lock is provided in the book compartment. Each electric lock is equipped with an unlocking drive circuit and a lock status detection circuit, and both the unlocking drive circuit and the lock status detection circuit are connected to the control chip.

[0010] As a further technical means, the unlocking drive circuit includes a multiplexer and a relay group. The channel selection terminal and enable pin of the multiplexer are both connected to the input / output port of the control chip. The output terminal of the multiplexer is connected to the electric lock through the drive coil of the relay group. The channel selection and enable are controlled by the general-purpose input / output pin, realizing the centralized control of multiple electric locks.

[0011] As a further technical means, the lock state detection circuit includes a micro switch and a shift register arranged in series. The output terminal of the micro switch is connected to the input terminal of the shift register, and the output terminal of the shift register is connected to the control chip.

[0012] In the above technical solution, a lock status detection circuit is constructed by connecting a microswitch and a shift register in series, which can monitor the status of the electronically controlled lock in real time. This design not only improves the accuracy of lock status detection, but also simplifies the connection with the control chip through the shift register, reducing system complexity.

[0013] As a further technical means, the micro switch is installed at the bolt inside the electric lock to improve the sensitivity of the lock status detection circuit.

[0014] As a further technical means, the control chip is implemented using a Pico development board, which integrates a serial port expansion chip WK2168. The serial port expansion chip WK2168 has multiple serial interfaces that can be connected to the display screen, card reader, and barcode scanner respectively.

[0015] In the above technical solution, the Pico development board is used as the control chip, and the WK2168 serial port expansion chip is integrated to achieve efficient communication with the display screen, card reader and barcode scanner.

[0016] As a further technical means, the serial port expansion chip WK2168 is also connected to the communication chip DR153 through a serial interface, which expands the wireless communication capability of the bookcase and facilitates remote monitoring and management.

[0017] As a further technical means, the display screen is a capacitive touch screen, the card reader includes an RFID card reader chip conforming to the ISO / IEC 14443 protocol, and the barcode scanner is an embedded barcode scanning module.

[0018] In the above technical solution, a capacitive touchscreen is used as the display, improving the convenience and response speed of user interaction. The card reader supports the ISO / IEC 14443 protocol, ensuring compatibility and security. The barcode scanner uses the BT8825 module, supporting fast and accurate QR code recognition, enhancing the user experience.

[0019] Compared with existing technologies, the beneficial effects of this utility model are: 1. This utility model provides an intelligent bookcase that can automatically adjust the brightness of the display screen according to changes in ambient light, achieving energy-saving effects; 2. This utility model improves the environmental adaptability and user experience of the bookcase by integrating advanced sensors and intelligent control units; 3. This utility model uses a signal processing circuit composed of voltage comparators and logic gate circuits, improving the system's response speed and accuracy; 4. This utility model uses a lock state detection circuit composed of microswitches and shift registers arranged in series, improving the accuracy of lock state detection, simplifying the connection with the control chip, and reducing system complexity. Attached Figure Description

[0020] Figure 1 A circuit connection diagram of a bookcase based on environmental perception is provided for an embodiment of this utility model;

[0021] Figure 2 This is a front half-sectional view of a bookcase structure based on environmental perception, provided as an embodiment of the present utility model.

[0022] In the diagram: 1. Cabinet; 2. Bookshelf; 21. Lock compartment; 22. Electric lock; 3. Cabinet door; 4. Monitor; 5. Barcode scanner; 6. Card reader; 7. Light sensor; 8. Infrared sensor. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figure 1 As shown, the specific solution of this utility model embodiment is as follows: A bookcase based on environmental perception includes a cabinet body and multiple book compartments, each book compartment corresponding to a cabinet door. A control chip is provided inside the cabinet body, and a display screen, card swiping device, barcode scanning device, and light sensor are provided on the outer surface of the cabinet body and connected to the control chip. The control chip is connected to the light sensor through a signal processing circuit.

[0026] The signal processing circuit includes a voltage comparator and a logic gate circuit. The output of the light sensor is connected to the inverting input of the voltage comparator, the non-inverting input of the voltage comparator is left unused, the inverting input of the voltage comparator is also connected to the reference voltage pin of the analog-to-digital converter of the control chip, the output of the voltage comparator is connected to the second input of the logic gate circuit, and the first input and output of the logic gate circuit are respectively connected to one of the general-purpose input / output pins of the control chip.

[0027] like Figure 1 As shown, AC is the AD acquisition pin of the control chip, which can be set to acquire the analog voltage value connected to the comparison voltage VREF. The light sensor circuit is based on the photoresistor GL5528. The photoresistor is connected in series with the calculated resistor through voltage division. The voltage value across the photoresistor GL5528 is measured and acquired in the control chip to calculate the light intensity at this time.

[0028] In this embodiment, when the photoresistor GL5528 detects that the light intensity is less than 50 Lux, the brightness of the display screen is adjusted to reduce power consumption.

[0029] In this embodiment, by integrating a light sensor, a control chip, and a signal processing circuit into the bookcase, the bookcase achieves intelligent perception of ambient light. This environmental perception capability enables the bookcase to automatically adjust the brightness of the display screen according to environmental changes, thereby effectively reducing energy consumption. Furthermore, the signal processing circuit composed of a voltage comparator and logic gate circuits effectively processes the light sensor signal. This design can accurately trigger the corresponding control logic according to the ambient light, improving the system's response speed and accuracy, and providing a foundation for reducing energy consumption.

[0030] In this embodiment, the control chip uses a control program that uses a photoresistor GL5528 to sense changes in the environment and adjust the brightness of the display, employing a mature light control program from the prior art.

[0031] In this implementation, an infrared sensor is also installed on the outer surface of the cabinet. The output of the infrared sensor is connected to the first input of a logic gate circuit. By adding an infrared sensor to the outer surface of the cabinet and connecting it to the signal processing circuit, the infrared sensor HC-SR501 outputs the detection result of whether someone has passed by through its OUT pin, realizing infrared detection of people. When the infrared sensor does not detect a person, the control chip controls the display screen to turn off. When the sensor detects a person approaching, it resumes operation within 0.5 seconds, ensuring that the user can operate quickly. This allows the bookcase to not only change its brightness according to the lighting environment, but also to further adjust the working status of the display screen by sensing the approach of a person, further reducing energy consumption.

[0032] It should be noted that in this embodiment, the control chip uses an existing infrared sensing program to control the display screen to turn off and wake up based on the detection results of the infrared sensor.

[0033] In this embodiment, an electric lock is installed inside the book compartment. The electric lock is a commercially available titanium wire electric lock, which uses the thermal expansion and contraction characteristics of titanium wire to drive the opening and closing of the lock hook, replacing traditional mechanical locks and electromagnetic locks.

[0034] Each book compartment is equipped with an unlocking drive circuit and a lock status detection circuit, and both the unlocking drive circuit and the lock status detection circuit are connected to the control chip.

[0035] In this embodiment, the unlocking drive circuit includes a multiplexer and a relay group. The channel selection terminal and enable pin of the multiplexer are both connected to the general-purpose input / output pins of the control chip. The output terminal of the multiplexer is connected to the electric lock through the drive coil of the relay group. The multiplexer is a CD74HC4067M96 chip.

[0036] The CD74HC4067M96 supports 16-to-1 selection by decoding the high and low levels of the 4 address lines to select the lock to be opened and output a level to unlock. The selection output pins are S0L0-S0L15 (16 pins in total), and the address lines are S0S0-S0S3 (4 pins in total). The control chip is connected to the S0S0-S0S3 pins and outputs the selected lock number. Based on the lock number, the chip outputs a high level on the corresponding pin of S0L0-S0L15. Taking S0L15 as an example, the high level, through the MOS relay switch circuit, turns on the relay switch DS1023, thus unlocking the lock.

[0037] In this embodiment, a transistor Q3 and a trench enhancement-mode MOSFET Q4 are also connected between the output of the multiplexer and the input of the relay group.

[0038] When the lock is turned off, the control chip outputs a high level, which turns on the transistor Q3, causing the voltage at point A to be divided into 100k and 10k, thus reducing the voltage at point A and turning off the channel enhancement-mode MOSFET Q4, thereby creating an open circuit. Once the circuit is broken, the relay has no current, thus achieving the purpose of locking.

[0039] When unlocking, the control chip outputs a low-level signal, and transistor Q3 cannot conduct. This is equivalent to an open circuit below point A, so the voltage at point A increases. Then, the trench enhancement-mode MOSFET Q4 conducts. After Q4 conducts, the current increases, the voltage of the relay group rises, and thus the lock is unlocked.

[0040] In the above technical solution, the CD74HC4067M96 chip is used as a multiplexer. The channel selection and enable are controlled by general-purpose input / output pins, thereby realizing centralized control of multiple electric locks.

[0041] The lock status detection circuit includes microswitches and shift registers arranged in series. Each microswitch is located at the bolt position of the electric lock. The parallel input terminal of the shift register is connected to the microswitch. Pin 1 and pin 2 of the shift register are connected to pin 25 and pin 24 of the control chip, respectively. The shift register is an SN74HC165 chip.

[0042] When the cabinet door and the electric lock are closed, the latch triggers a microswitch, which sends an electrical signal to the shift register. The SN74HC165 accepts 8-bit parallel input (pins S0R0-S0R1) and 1-bit serial output S0ROUT. This diagram uses S0R0 as an example for circuit connection. When the lock is closed, the circuit is turned on, and S0R0 is set to a low level. At this time, the level of each pin of the SN74HC165 can be output at the S0ROUT terminal to detect whether the lock is closed. The control chip receives the output of the lock status detection circuit's S0ROUT pin to determine the status of all the electric locks on the bookcase.

[0043] In the above technical solution, a lock status detection circuit is constructed by connecting a microswitch and an SN74HC165 shift register in series, which can monitor the status of the electronically controlled lock in real time. This design not only improves the accuracy of lock status detection, but also simplifies the connection with the control chip through the shift register, reducing system complexity.

[0044] In this embodiment, the control chip uses a Raspberry Pi Pico development board. The Pico development board integrates a serial port expansion chip, WK2168. The WK2168 has multiple serial interfaces that connect to the display screen, card reader, and barcode scanner respectively. The WK2168 is also connected to a communication chip, DR153. TX1 and RX1 control the display screen (HMI), TX2 and RX2 control the barcode scanner module, TX3 and RX3 control the communication module, and TX4 and RX4 control the card reader module.

[0045] In this embodiment, pins SR_SH / LD, SR_CLK and SR0OUT control the lock status detection circuit, pins S0COM, S0EN, S0S0, S0S1, S0S2 and S0S3 control the unlocking drive circuit, pin AC controls the light sensor, and pin OUT controls the infrared sensor.

[0046] In the above technical solution, a Pico development board is used as the control chip. Through the integrated serial port expansion chip WK2168, efficient communication with the display screen, card reader, and barcode scanner is achieved. Furthermore, by connecting the communication chip DR153, the wireless communication capability of the bookshelf is expanded, facilitating remote monitoring and management.

[0047] In this embodiment, the display screen is a capacitive touch screen, the card reader includes an RFID card reader chip conforming to the ISO / IEC 14443 protocol, and the barcode scanner is an embedded barcode scanning module, specifically model BT8825.

[0048] In the above technical solution, a capacitive touchscreen is used as the display, improving the convenience and response speed of user interaction. The card reader supports the ISO / IEC 14443 protocol, ensuring compatibility and security. The barcode scanner uses the BT8825 module, supporting fast and accurate QR code recognition, enhancing the user experience.

[0049] In this embodiment, the specific structure of the bookcase is as follows: Figure 2As shown, the cabinet is formed by fixing multiple horizontal and vertical panels together with screws. Inside the cabinet, multiple vertical partitions and horizontal panels are connected by screws to form multiple book compartments. Each book compartment has a separate cabinet door. At the bottom of the book compartment, a partition separates the book compartment into a lock chamber, and the electric lock is installed in the lock chamber. A front panel is set in the middle of the cabinet. The display screen, card reader, barcode scanner and light sensor are all installed on the front panel. The infrared sensor is installed at the bottom of the front of the cabinet, in the middle position.

[0050] The working principle of the above embodiment is as follows: The bookshelf uses a control chip as its core, combined with various sensors and circuits to achieve intelligent management. A light sensor detects the ambient light intensity and converts the light signal into a digital signal through a signal processing circuit. When the light intensity is below 50 Lux, the control chip adjusts the display brightness to reduce power consumption. Simultaneously, an infrared sensor detects the approach of a person. When no one is near, the display screen turns off; when a person is detected approaching, the display screen resumes operation within 0.5 seconds, further optimizing energy management.

[0051] Each cabinet door is equipped with a titanium wire electric lock, utilizing the thermal expansion and contraction properties of titanium wire to open and close the lock. The unlocking drive circuit consists of a multiplexer and a relay group. The channel selection and enable of the multiplexer are controlled by the general-purpose input / output pins of the control chip, selecting the lock to be opened and outputting a level to drive the relay to unlock. The lock status detection circuit consists of a microswitch and a shift register, which monitors the closed state of the electric lock in real time and feeds the status information back to the control chip.

[0052] In addition, the bookcase's outer surface is equipped with a display screen, card reader, and barcode scanner, which connect to the control chip via a serial port expansion chip (WK2168) to enable user interaction and identity verification. The DR153 communication chip further expands the bookcase's wireless communication capabilities, facilitating remote monitoring and management.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environment-aware bookcase, comprising a cabinet body and a plurality of bookshelves, each bookshelf corresponding to a cabinet door, characterized in that: The cabinet body is internally provided with a control chip, and the outer surface of the cabinet body is provided with a display screen, a card swiping device, a code scanning device and a light sensor connected with the control chip. The signal processing circuit comprises a voltage comparator and a logic gate circuit, the output end of the light sensor is connected with the inverting input end of the voltage comparator, the non-inverting input end of the voltage comparator is vacant, the output end of the voltage comparator is connected with the input end of the logic gate circuit, and the output end of the logic gate circuit is connected with the input and output port of the control chip.

2. The bookcase based on environmental perception according to claim 1, characterized in that: The outer surface of the cabinet body is further provided with an infrared sensor, the output end of the infrared sensor is connected with the first input end of the logic gate circuit, the second input end of the logic gate circuit is connected with the output end of the voltage comparator, and the first input end of the logic gate circuit is further connected with the input and output port of the control chip.

3. The bookshelf based on environmental perception according to claim 1, characterized in that: Each of the electric control locks is provided with an unlocking driving circuit and a lock state detection circuit, and the unlocking driving circuit and the lock state detection circuit are connected with the control chip.

4. The bookcase based on environmental perception according to claim 3, characterized in that: The unlocking driving circuit comprises a multiplexer and a relay group, the channel selection end and the enable pin of the multiplexer are connected with the input and output port of the control chip, and the output end of the multiplexer is connected with the electric control lock through the driving coil of the relay group.

5. The bookcase based on environmental perception according to claim 3, characterized in that: The lock state detection circuit comprises a micro switch and a shift register connected in series, the output end of the micro switch is connected with the input end of the shift register, and the output end of the shift register is connected with the control chip.

6. The bookcase based on environmental perception according to claim 5, characterized in that: The micro switch is arranged at the lock tongue inside the electric control lock.

7. The bookcase based on environment perception according to claim 1, characterized in that: The control chip is realized by a Pico development board, the Pico development board is integrated with a serial port expansion chip WK2168, and the serial port expansion chip WK2168 is provided with a plurality of serial interfaces connected with the display screen, the card swiping device and the code scanning device.

8. The environment-aware bookshelf of claim 7, wherein: The serial port expansion chip WK2168 is further connected with a communication chip DR153 through a serial interface.

9. The environment-aware bookshelf of claim 1, wherein: The display screen is a capacitive touch screen, the card swiping device adopts a radio frequency card reading chip conforming to the ISO / IEC 14443 protocol, and the code scanning device is an embedded code scanning module.

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