A weighing scale shelf and its monitoring circuit

Abstract

The present application discloses a weighing scale shelf and its monitoring circuit, including a bottom plate, a carrier plate connected to the bottom plate, a weighing mechanism located between the bottom plate and the carrier plate, and an array sensing mechanism located on the carrier plate, the array sensing mechanism including a conductive plate, an array sensing plate arranged corresponding to the conductive plate, and a plurality of sensing units arranged in an array on the array sensing plate, the sensing unit can move relative to the array sensing plate along the thickness direction of the array sensing plate so that the sensing unit is electrically connected to the conductive plate in an active manner. The sensing unit is movable on the array sensing plate along its thickness direction and forms an active electrical connection with the conductive plate. The introduction of this mechanism realizes accurate weight monitoring of different areas on the shelf. Through the up and down movement of the sensing unit, the system can accurately detect the weight change of objects taken away or added in the subdivided area of ​​the current carrier plate, providing more comprehensive and real-time data support for business management.

Description

Technical Field

[0001] The present application relates to the field of weighing and weighing goods, and in particular to a weighing scale shelf and a monitoring circuit thereof. Background Art

[0002] Traditional shelf scales are usually used as an integral unit and can only monitor the overall weight of the current loading panel and the weight of objects removed or added to the overall panel. This limits the ability to accurately monitor the subdivided areas of goods in the retail, warehousing and other fields. Currently, there is a lack of shelves with intelligent weight monitoring functions on the market, which cannot provide accurate weight data for objects removed or added in specific areas, thus hindering companies' in-depth analysis of inventory and sales trends and limiting the fine management of business operations.

[0003] Application Contents

[0004] In order to solve the problem that traditional shelf scales cannot provide accurate weight data of objects taken away or added in a specific area, the present application provides a weighing scale shelf and a monitoring circuit thereof.

[0005] The weighing scale shelf provided in this application adopts the following technical solution:

[0006] A weighing scale shelf comprises a bottom plate, a carrier plate connected to the bottom plate, a weighing mechanism located between the bottom plate and the carrier plate, and an array sensing mechanism located on the carrier plate, wherein the array sensing mechanism comprises a conductive plate, an array sensing plate arranged corresponding to the conductive plate, and a plurality of sensing units arranged in an array on the array sensing plate, wherein the sensing units can move relative to the array sensing plate along the thickness direction of the array sensing plate so that the sensing units are movably electrically connected to the conductive plate.

[0007] By adopting the above technical solution, an array sensing mechanism is introduced, which consists of a conductive plate, an array sensing plate arranged opposite to the conductive plate, and a plurality of sensing units arranged in an array. These sensing units are movable on the array sensing plate along its thickness direction and form an active electrical connection with the conductive plate. The introduction of this mechanism realizes accurate weight monitoring of different areas on the shelf. Through the up and down movement of the sensing unit, the system can accurately detect the weight change of objects taken away or added in the subdivided area of ​​the current carrier plate, providing smarter and more subdivided weight monitoring solutions for retail, warehousing and other fields, and providing more comprehensive and real-time data support for business management, which is expected to improve the efficiency and accuracy of inventory management.

[0008] Preferably, the sensing unit includes a sensing keycap and a conductive block located on a side of the sensing keycap close to the conductive plate, and the conductive block moves as the sensing keycap moves toward or away from the conductive plate, so that the conductive block is in active contact with the conductive plate.

[0009] By adopting the above technical solution, the conductive block moves in the direction close to or away from the conductive plate as the sensing keycap moves, thereby ensuring active electrical connection between the sensing unit and the conductive plate; this achieves accurate weight monitoring of different areas on the shelf through the coordinated movement of the sensing keycap and the conductive block.

[0010] Preferably, an information processing element is provided on the conductive plate, and the information processing element is electrically connected to a pressure sensing bump protruding from the conductive plate, and the pressure sensing bump is provided corresponding to the conductive block.

[0011] By adopting the above technical solution, high-precision weight monitoring of different areas on the shelf is achieved by integrating the electrical connection of the information processing element and the pressure sensing bump. When the sensing keycap and the conductive block form an electrical connection with the conductive plate, the electrical connection between the pressure sensing bump and the information processing element is ensured. This synergy enables the system to accurately capture the weight changes of objects taken away or added in the current subdivided area of ​​the carrier board, providing a smarter and more subdivided weight monitoring solution for retail, warehousing and other fields.

[0012] Preferably, a first clearance gap is provided on the bottom plate, and a second clearance gap is provided on the carrier plate corresponding to the first clearance gap, and a connecting through hole is provided between the first clearance gap and the second clearance gap for the wire connecting the information processing element and the weighing mechanism to pass through.

[0013] By adopting the above technical solution, the mutual correspondence of the notches and the setting of the connecting through holes provide a convenient channel for the electrical connection between the information processing element and the weighing mechanism. This design ensures that the information processing element can be effectively connected to the weighing mechanism on the bottom plate, thereby realizing high-precision weight monitoring of different areas on the shelf.

[0014] A weighing scale shelf monitoring circuit is applied to the weighing scale shelf. The monitoring circuit includes a main control module, a data transmission module, a weight detection module for measuring the total weight of each object on a carrier, and a regional coordinate positioning module for monitoring the pressure change information of an array sensing mechanism. The signal output end of the weight detection module is connected to the first signal input end of the main control module, the signal output end of the regional coordinate positioning module is connected to the second signal input end of the main control module, the signal output end of the main control module is connected to the signal input end of the data transmission module, and the signal output end of the data transmission module is used for wireless and / or wired transmission of corresponding monitoring signals.

[0015] By adopting the above technical solution, it is possible to perform high-precision weight monitoring on different areas on the weighing scale shelf. Through the synergy of the weight detection module and the regional coordinate positioning module, the system can accurately capture the overall weight and pressure change information of each object on the carrier, and realize the subdivided weight monitoring of different areas. At the same time, through the data transmission module, the monitoring signal can be transmitted wirelessly or wired, thus providing a smarter and more subdivided weight monitoring solution for retail, warehousing and other fields, providing more comprehensive and real-time data support for business management, and helping to improve the efficiency and accuracy of inventory management.

[0016] Preferably, the regional coordinate positioning module includes a control chip U2 and a plurality of single-column switch units, the single-column switch units include a plurality of switch conduction elements and a switch bus that connects the switch conduction elements in parallel, the first ends of the switch conduction elements are connected to the data port of the control chip U2, the second ends of the switch conduction elements are connected to the switch bus, and the switch bus is connected to another data port of the control chip U2.

[0017] By adopting the above technical solution, the precise positioning of the array sensor component is achieved by combining the switch states of the single-column switch units. The technical effect is that through the reasonable organization of the control chip and the switch unit, the position of the array sensor component is highly controllable and adjustable, thereby improving the positioning accuracy and system flexibility.

[0018] Preferably, the weight detection module includes a wiring terminal J1, an input multiplexing unit, a signal amplifying unit and an analog-to-digital conversion unit, the first end of the wiring terminal J1 is connected to the channel positive input signal end of the input multiplexing unit, the second end of the wiring terminal J1 is connected to the channel negative input signal end of the input multiplexing unit, the third end of the wiring terminal J1 is connected to the reference source signal input end of the input multiplexing unit, the signal output end of the input multiplexing unit is connected to the signal input end of the signal amplifying unit, the signal output end of the signal amplifying unit is connected to the signal input end of the analog-to-digital conversion unit, and the signal output end of the analog-to-digital conversion unit is connected to the first signal input end of the main control module.

[0019] By adopting the above technical solution, the signals of each channel are effectively and accurately processed. The signal is correctly input through the clever connection between the terminal J1 and the input multiplexing unit. The input multiplexing unit then passes the signal to the signal amplification unit to further enhance the signal strength. Subsequently, the signal is digitized by the analog-to-digital conversion unit to convert the analog signal into digital form. Finally, through the connection with the main control module, the main control module is provided with accurate information on the total weight of the object.

[0020] Preferably, the monitoring circuit also includes a charging module, which includes a USB port Type C, an overvoltage protection chip U10, a diode D2, a MOS tube Q1, a MOS tube Q2, a diode D1 and a battery management chip U8, the power input end of the USB port Type C is connected to the power input end of the overvoltage protection chip U10, the power output end of the overvoltage protection chip U10 is connected to the positive end of the diode D2, the negative end of the diode D2 is used as the first power output end of the charging module to output power for power supply, the controlled end of the MOS tube Q1 is connected to the power output end of the overvoltage protection chip U10, and the negative end of the diode D2 is connected to the first conduction end of the MOS tube Q1. The second conducting end of the MOS tube Q1 is connected to the first conducting end of the MOS tube Q2, the second conducting end of the MOS tube Q2 is connected to the power detection signal input end of the main control module, the controlled end of the MOS tube Q2 is connected to the power output end of the overvoltage protection chip U10, the positive end of the diode D1 is connected to the second conducting end of the MOS tube Q2, the negative end of the diode D1 is also used as the first power output end of the charging module to output power for power supply, the power output end of the overvoltage protection chip U10 is connected to the power input end of the battery management chip U8, and the power output end of the battery management chip U8 is used as the second power output end of the charging module to output power for power supply.

[0021] By adopting the above technical solution, the USB port Type C is used as the power input, and after being processed by the overvoltage protection chip U10, the power is output through the diode D2, and the input of the power detection signal is realized through the coordinated control of the MOS tube Q1 and the MOS tube Q2. The battery management chip U8 is responsible for power management, and its output end serves as the second power output end of the charging module. The design of the overall charging module ensures the reliable power supply and battery management of the monitoring circuit, effectively supports the long-term operation and convenient charging operation of the equipment, and improves the stability and convenience of the system.

[0022] Preferably, the data transmission module includes a wireless transmission chip M1, a data port of the wireless transmission chip M1 is connected to a data port of the main control module, a power input end of the wireless transmission chip M1 is connected to a power output end of a transformer chip U2, and a power input end of the transformer chip U2 is connected to a first power output end of the charging module.

[0023] By adopting the above technical solution, the data port of the wireless transmission chip M1 is connected to the data port of the main control module, thereby realizing data transmission. To ensure the stable operation of the wireless transmission chip M1, its power input end is connected to the power output end of the transformer chip U2. At this time, the power input end of the transformer chip U2 is connected to the first power output end of the charging module, thereby realizing stable power supply to the wireless transmission chip M1.

[0024] Preferably, the monitoring circuit further comprises an extended asynchronous serial port module, and a data port of the extended asynchronous serial port module is connected to a data port of the main control module.

[0025] By adopting the above technical solution, this design allows the monitoring circuit to communicate data with external devices, providing more scalability and flexibility, making the monitoring system more adaptable to different application scenarios and needs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. This application introduces an array sensing mechanism, which consists of a conductive plate, an array sensing plate arranged opposite to the conductive plate, and a plurality of sensing units arranged in an array. These sensing units are movable on the array sensing plate along its thickness direction and form an active electrical connection with the conductive plate. The introduction of this mechanism realizes accurate weight monitoring of different areas on the shelf. Through the up and down movement of the sensing unit, the system can accurately detect the weight change of objects taken away or added in the subdivided area of ​​the current carrier plate, providing smarter and more subdivided weight monitoring solutions for retail, warehousing and other fields, and providing more comprehensive and real-time data support for business management, which is expected to improve the efficiency and accuracy of inventory management. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a weighing scale shelf according to an embodiment of the present application.

[0029] Figure 2 This is an embodiment of the present application Figure 1 A is an enlarged view of the middle image.

[0030] Figure 3 It is a schematic diagram of an exploded view of a weighing scale shelf according to an embodiment of the present application.

[0031] Figure 4 It is a structural schematic diagram of the movement process of the sensing unit in an embodiment of the present application.

[0032] Figure 5 It is a flow chart of a weighing scale shelf monitoring circuit according to an embodiment of the present application.

[0033] Figure 6 It is a partial circuit diagram of the charging module of the embodiment of the present application.

[0034] Figure 7 This is a partial circuit diagram of the weight detection module of the embodiment of the present application except for the connection terminal J1. Figure 1 .

[0035] Figure 8 This is a partial circuit diagram of the weight detection module of the embodiment of the present application except for the connection terminal J1. Figure 2 .

[0036] Fig. 9 It is a partial circuit diagram of the connection terminal J1 of the embodiment of the present application.

[0037] Fig.10 It is a partial circuit diagram of the power detection network of the embodiment of the present application.

[0038] Fig.11 It is a partial circuit diagram of the transformer unit in the embodiment of the present application.

[0039] Fig.12 It is a partial circuit diagram of the data transmission module of an embodiment of the present application.

[0040] Fig.13 This is a partial circuit diagram of the regional coordinate positioning module of the embodiment of the present application. Figure 1 .

[0041] Fig.14 This is a partial circuit diagram of the regional coordinate positioning module of the embodiment of the present application. Figure 2 .

[0042] Description of reference numerals:

[0043] 1. Bottom plate; 11. First gap;

[0044] 2. Carrier board; 21. Second clearance gap;

[0045] 3. Weighing mechanism;

[0046] 4. Sensing mechanism; 41. Conductive plate; 42. Array sensing plate; 43. Sensing unit; 431. Sensing key cap; 432. Conductive block; 44. Information processing element; 45. Pressure sensing bump;

[0047] 5. Connect through holes;

[0048] 101. Main control module; 102. Data transmission module; 103. Weight detection module; 1031. Input multiplexing unit; 1032. Signal amplification unit; 1033. Analog-to-digital conversion unit; 104. Regional coordinate positioning module; 1041. Single-row switch unit; 1042. Switch conduction element. DETAILED DESCRIPTION

[0049] The following is combined with Figure 1-14 This application is described in further detail.

[0050] Reference Figure 1-3 A weighing scale shelf includes a bottom plate 1, a carrier plate 2 connected to the bottom plate 1, a weighing mechanism 3 located between the bottom plate 1 and the carrier plate 2, and an array sensing mechanism 4 located on the carrier plate 2, wherein the array sensing mechanism 4 includes a conductive plate 41, an array sensing plate 42 corresponding to the conductive plate 41, and a plurality of sensing units 43 arranged in an array on the array sensing plate 42, wherein the sensing units 43 can move relative to the array sensing plate 42 along the thickness direction of the array sensing plate 42 so that the sensing units 43 are movably electrically connected to the conductive plate 41.

[0051] In this embodiment, an array sensing mechanism 4 is introduced, which is composed of a conductive plate 41, an array sensing plate 42 arranged opposite to the conductive plate 41, and a plurality of sensing units 43 arranged in an array. These sensing units 43 are movable along the thickness direction of the array sensing plate 42, and form an active electrical connection with the conductive plate 41. The introduction of this mechanism realizes accurate weight monitoring of different areas on the shelf. Through the up and down movement of the sensing unit 43, the system can accurately detect the weight change of objects taken away or added in the subdivided area of ​​the current carrier plate 2, providing a smarter and more subdivided weight monitoring solution for retail, warehousing and other fields, providing more comprehensive and real-time data support for business management, and is expected to improve the efficiency and accuracy of inventory management.

[0052] Preferably, it is assumed that such a weighing scale shelf is used in a retail supermarket. When a customer places goods on the shelf, the array sensing mechanism 4 will accurately monitor the weight changes in different areas. For example, in the vegetable area, if a customer takes some vegetables, the sensing unit 43 will detect this change and transmit the corresponding weight information to the main control module 101. In this way, retailers can understand the inventory status of the vegetable area in real time, replenish stocks in time or perform inventory management. Similarly, in the commodity display area, when new goods are placed or customers purchase goods, the array sensing mechanism 4 can accurately monitor the weight changes of each subdivided area, so that retailers can more accurately understand the inventory status of each commodity.

[0053] Further, see Figure 4 The sensing unit 43 includes a sensing key cap 431 and a conductive block 432 located on a side of the sensing key cap 431 close to the conductive plate 41. The conductive block 432 moves as the sensing key cap 431 moves toward or away from the conductive plate 41, so that the conductive block 432 is in active contact with the conductive plate 41, thereby making the sensing unit 43 and the conductive plate 41 electrically connected.

[0054] In this embodiment, the conductive block 432 moves in the direction closer to or away from the conductive plate 41 as the sensing keycap 431 moves, thereby ensuring that the sensing unit 43 and the conductive plate 41 are actively electrically connected; this achieves accurate weight monitoring of different areas on the shelf through the coordinated movement of the sensing keycap 431 and the conductive block 432.

[0055] Preferably, a 38x23 array silicone pad is used; each silicone key, i.e., the sensing keycap 431, the force applied on the key will cause the silicone key to move; the silicone key contains black conductive carbon particles, i.e., conductive blocks 432, which cooperate with the copper leakage pads of the PCBA below to achieve loop conduction; then the array is scanned by mcu2 to confirm the current coordinate position.

[0056] Furthermore, when the conductive block 432 is not in contact with the conductive plate 41, it indicates that there is no object in the area where the sensing unit 43 is located or the object has been taken away by the customer. At this time, there is no electrical connection between the sensing unit 43 and the conductive plate 41, and the system can determine that the state of the area is empty. When the sensing keycap 431 is pressed down, the conductive block 432 moves toward or away from the conductive plate 41, so that the conductive block 432 establishes an active electrical connection with the conductive plate 41. This connection indicates that there is an object between the conductive block 432 and the conductive plate 41, which may be a newly placed product or an object placed by a customer. By detecting this electrical connection, the system can accurately determine the presence of an object in the current area, providing retailers with real-time information about the status of the goods.

[0057] Further, see Figure 2 An information processing element 44 is disposed on the conductive plate 41 . The information processing element 44 is electrically connected to a pressure sensing bump 45 protruding from the conductive plate 41 . The pressure sensing bump 45 is disposed correspondingly to the conductive block 432 .

[0058] In this embodiment, by integrating the electrical connection between the information processing element 44 and the pressure sensing bump 45, high-precision weight monitoring of different areas on the shelf is achieved. When the sensing key cap 431 and the conductive block 432 form an electrical connection with the conductive plate 41, the electrical connection between the pressure sensing bump 45 and the information processing element 44 is ensured. This synergy enables the system to accurately capture the weight changes of objects taken away or added in the subdivided area of ​​the current carrier 2, providing a smarter and more subdivided weight monitoring solution for the fields of retail, warehousing, etc.

[0059] Preferably, an information processing element 44 is provided on the conductive plate 41, and is electrically connected to a pressure sensing bump 45 protruding from the conductive plate 41. When the conductive block 432 of the sensing unit 43 contacts the pressure sensing bump 45 of the conductive plate 41, the pressure sensing bump 45 transmits a pressure signal to the information processing element 44. The information processing element 44 obtains information about the state of the object in the area where the sensing unit 43 is located through this electrical connection.

[0060] Further, see Figure 2 A first clearance gap 11 is provided on the bottom plate 1, and a second clearance gap 21 located on the carrier plate 2 is correspondingly provided with the first clearance gap 11. A connecting through hole 5 is provided between the first clearance gap 11 and the second clearance gap 21 for the wire connecting the information processing element 44 and the weighing mechanism 3 to pass through.

[0061] In this embodiment, the mutual correspondence of the notches and the setting of the connecting through holes 5 provide a convenient channel for the electrical connection between the information processing element 44 and the weighing mechanism 3. This design ensures that the information processing element 44 can be effectively connected to the weighing mechanism 3 on the bottom plate 1, thereby achieving high-precision weight monitoring of different areas on the shelf.

[0062] Preferably, there is a USB port next to the wire for charging or as an expansion interface. The first clearance gap 11 and the second clearance gap 21 are intended to provide clearance space for the wire and other charging interfaces to facilitate the insertion of the USB connector and the wire.

[0063] A weighing scale shelf monitoring circuit, refer to Figure 5 , applied to weighing scale shelves, the monitoring circuit includes a main control module 101, a data transmission module 102, a weight detection module 103 for measuring the total weight of each object on the carrier 2, and a regional coordinate positioning module 104 for monitoring the pressure change information of the array sensing mechanism 4, the signal output end of the weight detection module 103 is connected to the first signal input end of the main control module 101, the signal output end of the regional coordinate positioning module 104 is connected to the second signal input end of the main control module 101, the signal output end of the main control module 101 is connected to the signal input end of the data transmission module 102, and the signal output end of the data transmission module 102 is used for wireless and / or wired transmission of the corresponding monitoring signal.

[0064] In this embodiment, it is possible to perform high-precision weight monitoring on different areas on the weighing scale shelf. Through the synergy of the weight detection module 103 and the regional coordinate positioning module 104, the system can accurately capture the overall weight and pressure change information of each object on the carrier 2, and realize the subdivided weight monitoring of different areas. At the same time, through the data transmission module 102, the monitoring signal can be transmitted wirelessly or wired, thereby providing a smarter and more subdivided weight monitoring solution for retail, warehousing and other fields, providing more comprehensive and real-time data support for business management, and helping to improve the efficiency and accuracy of inventory management.

[0065] Further, see Figure 13-14 The regional coordinate positioning module 104 includes a control chip U2 and a plurality of single-column switch units 1041, wherein the single-column switch units 1041 include a plurality of switch conduction elements 1042 and a switch bus that connects the switch conduction elements 1042 in parallel, wherein the first ends of the switch conduction elements 1042 are connected to the data port of the control chip U2, the second ends of the switch conduction elements 1042 are connected to the switch bus, and the switch bus is connected to another data port of the control chip U2.

[0066] In this embodiment, the working principle of the regional coordinate positioning module 104 is to realize the positioning of the array sensor component through the control chip U2 and multiple single-column switch units 1041. Consider a sensor array on a shelf, each single-column switch unit 1041 is equivalent to a column, including multiple switch conduction elements 1042, each element represents a sensor. It is assumed here that the shelf is a plane, and the sensor array is installed on each column. The control chip U2 controls the state of each switch conduction element 1042 through the data port, that is, on or off. The control chip U2 controls the state of each switch conduction element 1042 through the data port, that is, on or off. Taking the shelf as an example, this system can be used to detect the placement of items on the shelf. By adjusting the state of the switch conduction element 1042, the selection of each column of sensors is realized, so as to accurately obtain information at different positions on the shelf. This controllability and highly accurate positioning capability make shelf management more intelligent and flexible.

[0067] Further, see Figure 7-9The weight detection module 103 includes a wiring terminal J1, an input multiplexing unit 1031, a signal amplifying unit 1032 and an analog-to-digital conversion unit 1033. The first end of the wiring terminal J1 is connected to the channel positive input signal end of the input multiplexing unit 1031, the second end of the wiring terminal J1 is connected to the channel negative input signal end of the input multiplexing unit 1031, the third end of the wiring terminal J1 is connected to the reference source signal input end of the input multiplexing unit 1031, the signal output end of the input multiplexing unit 1031 is connected to the signal input end of the signal amplifying unit 1032, the signal output end of the signal amplifying unit 1032 is connected to the signal input end of the analog-to-digital conversion unit 1033, and the signal output end of the analog-to-digital conversion unit 1033 is connected to the first signal input end of the main control module 101.

[0068] In this embodiment, it is ensured that the signals of each channel are effectively and accurately processed. The signal is correctly input through the clever connection between the terminal J1 and the input multiplexing unit 1031. The input multiplexing unit 1031 then transmits the signal to the signal amplification unit 1032 to further enhance the strength of the signal. Subsequently, the signal is digitally converted by the analog-to-digital conversion unit 1033 to convert the analog signal into a digital form. Finally, through the connection with the main control module 101, accurate information on the total weight of the object is provided to the main control module 101.

[0069] Preferably, the weight detection module 103 uses an analog-to-digital conversion chip of model CS1237, which is a high-precision, low-power analog-to-digital conversion chip with a differential input channel, a built-in temperature sensor and a high-precision oscillator. The MCU can communicate with the CS1237 through the 2-wire SPI interface SCLK and DRDY, and configure it, such as channel selection, PGA selection, output rate selection, etc. The input multiplexing unit 1031 included therein is used to select one of the multiple input signals and pass it to the output. The function of the input multiplexer is similar to that of a switch, but it is controlled by an electronic signal, and the analog-to-digital conversion is to measure the total weight of the corresponding material, that is, the weighing mechanism 3.

[0070] Further, see Figure 6The monitoring circuit also includes a charging module, which includes a USB port Type C, an overvoltage protection chip U10, a diode D2, a MOS tube Q1, a MOS tube Q2, a diode D1 and a battery management chip U8. The power input end of the USB port Type C is connected to the power input end of the overvoltage protection chip U10, the power output end of the overvoltage protection chip U10 is connected to the positive end of the diode D2, and the negative end of the diode D2 is used as the first power output end of the charging module to output power for power supply. The controlled end of the MOS tube Q1 is connected to the power output end of the overvoltage protection chip U10, and the negative end of the diode D2 is connected to the first conduction end of the MOS tube Q1. The second conducting end of the MOS tube Q1 is connected to the first conducting end of the MOS tube Q2, the second conducting end of the MOS tube Q2 is connected to the power detection signal input end of the main control module 101, the controlled end of the MOS tube Q2 is connected to the power output end of the overvoltage protection chip U10, the positive end of the diode D1 is connected to the second conducting end of the MOS tube Q2, the negative end of the diode D1 is also used as the first power output end of the charging module to output power for power supply, the power output end of the overvoltage protection chip U10 is connected to the power input end of the battery management chip U8, and the power output end of the battery management chip U8 is used as the second power output end of the charging module to output power for power supply.

[0071] In this embodiment, the model of the battery management chip U8 is HX4054, the model of the overvoltage protection chip U10 is TP2602, and the USB port TypeC is used as the power input. After being processed by the overvoltage protection chip U10, the power is output through the diode D2, and the input of the power detection signal is realized through the coordinated control of the MOS tube Q1 and the MOS tube Q2. The battery management chip U8 is responsible for power management, and its output end serves as the second power output end of the charging module. The design of the overall charging module ensures the reliable power supply and battery management of the monitoring circuit, effectively supports the long-term operation and convenient charging operation of the equipment, and improves the stability and ease of use of the system.

[0072] Preferably, the USB port Type C acts as a power input terminal, receives an external power source, and provides power to the charging module. The function of the overvoltage protection chip U10 is to act as an overvoltage protection device to protect the circuit from overvoltage damage. It receives the power input of the USB port Type C, and manages the current flow by controlling MOS tubes Q1 and Q2 to ensure that the circuit operates within a safe voltage range to avoid damage or overload. The output of the overvoltage protection chip is connected to the diode D2 to provide the first power output of the charging module. Overall, these components work together to achieve effective overvoltage protection and power management, ensuring that the charging module operates stably and reliably.

[0073] Further, see Figure 11-12The data transmission module 102 includes a wireless transmission chip M1, a data port of the wireless transmission chip M1 is connected to the data port of the main control module 101, a power input end of the wireless transmission chip M1 is connected to a power output end of the transformer chip U2, and a power input end of the transformer chip U2 is connected to a first power output end of the charging module.

[0074] In this embodiment, the model of the wireless transmission chip M1 is WG237, and the data port of the wireless transmission chip M1 is connected to the data port of the main control module 101 to realize data transmission. To ensure the stable operation of the wireless transmission chip M1, its power input end is connected to the power output end of the transformer chip U2. At this time, the power input end of the transformer chip U2 is connected to the first power output end of the charging module, thereby realizing stable power supply to the wireless transmission chip M1, wherein the wireless transmission chip M1 completes the function of data reporting, and the model of the transformer chip is ME6211C33M5G-N.

[0075] Further, refer to Fig.10 The power detection signal input end of the main control module 101 is connected to a power detection network, which includes a resistor R2 and a resistor R7. The second conduction end of the MOS tube Q2 is connected to the first end of the resistor R2, and the common node of the second end of the resistor R2 and the first end of the resistor R7 is connected to the power detection signal input end of the main control module 101. The second end of the resistor R7 is grounded.

[0076] Furthermore, the monitoring circuit also includes an extended asynchronous serial port module, and a data port of the extended asynchronous serial port module is connected to a data port of the main control module 101 .

[0077] In this embodiment, this design allows the monitoring circuit to communicate data with external devices, providing more scalability and flexibility, making the monitoring system more adaptable to different application scenarios and requirements. The model of the expansion asynchronous serial port module can be CH340 or CP2102. The expansion asynchronous serial port module can be understood as assuming that you have a computer that does not have a traditional serial port (COM port), and you need to connect a device that only supports serial port communication, such as an old serial port printer or some embedded systems. At this time, you can use the CH340 chip to realize the function of USB to serial port;

[0078] Preferably, the model of the main control module 101 is CS32F031K8S6, which is a model of an STM32 microcontroller. STM32 is a series of 32-bit ARM Cortex-M microcontrollers launched by STMicroelectronics.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A weighing scale shelf, characterized in that: The invention comprises a bottom plate (1), a carrier plate (2) connected to the bottom plate, a weighing mechanism (3) located between the bottom plate (1) and the carrier plate (2), and an array sensing mechanism (4) located on the carrier plate (2), wherein the array sensing mechanism (4) comprises a conductive plate (41), an array sensing plate (42) arranged corresponding to the conductive plate (41), and a plurality of sensing units (43) arranged in an array on the array sensing plate (42), wherein the sensing units (43) can move relative to the array sensing plate (42) along the thickness direction of the array sensing plate (42) so that the sensing units (43) are movably electrically connected to the conductive plate (41); The sensing unit (43) comprises a sensing key cap (431) and a conductive block (432) located on a side of the sensing key cap (431) close to the conductive plate (41), wherein the conductive block (432) moves as the sensing key cap (431) moves toward or away from the conductive plate (41), so that the conductive block (432) is in active contact with the conductive plate (41); An information processing element (44) is provided on the conductive plate (41), the information processing element (44) is electrically connected to a pressure sensing convex block (45) convexly provided on the conductive plate (41), and the pressure sensing convex block (45) is provided correspondingly to the conductive block (432); The bottom plate (1) is provided with a first clearance notch (11), and the first clearance notch (11) corresponds to a second clearance notch (21) located on the carrier plate (2), and a connecting through hole (5) is provided between the first clearance notch (11) and the second clearance notch (21) for a wire connecting the information processing element (44) and the weighing mechanism (3) to pass through.

2. A weighing scale shelf monitoring circuit, characterized in that: Applied to the weighing scale shelf as claimed in claim 1, the monitoring circuit includes a main control module, a data transmission module, and a weight detection module for measuring the total weight of each object on the carrier, and a regional coordinate positioning module for monitoring the pressure change information of the array sensing mechanism, the signal output end of the weight detection module is connected to the first signal input end of the main control module, the signal output end of the regional coordinate positioning module is connected to the second signal input end of the main control module, the signal output end of the main control module is connected to the signal input end of the data transmission module, and the signal output end of the data transmission module is used for wireless and / or wired transmission of the corresponding monitoring signal; The regional coordinate positioning module includes a control chip U2 and multiple single-column switch units, the single-column switch units include multiple switch conduction elements and a switch bus that connects the switch conduction elements in parallel, the first ends of the switch conduction elements are connected to the data port of the control chip U2, the second ends of the switch conduction elements are connected to the switch bus, and the switch bus is connected to another data port of the control chip U2.

3. A weighing scale shelf monitoring circuit according to claim 2, characterized in that: The weight detection module includes a wiring terminal J1, an input multiplexing unit, a signal amplifying unit and an analog-to-digital conversion unit. The first end of the wiring terminal J1 is connected to the channel positive input signal end of the input multiplexing unit, the second end of the wiring terminal J1 is connected to the channel negative input signal end of the input multiplexing unit, the third end of the wiring terminal J1 is connected to the reference source signal input end of the input multiplexing unit, the signal output end of the input multiplexing unit is connected to the signal input end of the signal amplifying unit, the signal output end of the signal amplifying unit is connected to the signal input end of the analog-to-digital conversion unit, and the signal output end of the analog-to-digital conversion unit is connected to the first signal input end of the main control module.

4. A weighing scale shelf monitoring circuit according to claim 2, characterized in that: The monitoring circuit also includes a charging module, which includes a USB port Type C, an overvoltage protection chip U10, a diode D2, a MOS tube Q1, a MOS tube Q2, a diode D1 and a battery management chip U8. The power input end of the USB port Type C is connected to the power input end of the overvoltage protection chip U10, the power output end of the overvoltage protection chip U10 is connected to the positive end of the diode D2, the negative end of the diode D2 is used as the first power output end of the charging module to output power for power supply, the controlled end of the MOS tube Q1 is connected to the power output end of the overvoltage protection chip U10, and the negative end of the diode D2 is connected to the first conduction end of the MOS tube Q1. The second conducting end of the MOS tube Q1 is connected to the first conducting end of the MOS tube Q2, the second conducting end of the MOS tube Q2 is connected to the power detection signal input end of the main control module, the controlled end of the MOS tube Q2 is connected to the power output end of the overvoltage protection chip U10, the positive end of the diode D1 is connected to the second conducting end of the MOS tube Q2, the negative end of the diode D1 is also used as the first power output end of the charging module to output power for power supply, the power output end of the overvoltage protection chip U10 is connected to the power input end of the battery management chip U8, and the power output end of the battery management chip U8 is used as the second power output end of the charging module to output power for power supply.

5. A weighing scale shelf monitoring circuit according to claim 4, characterized in that: The data transmission module includes a wireless transmission chip M1, a data port of the wireless transmission chip M1 is connected to the data port of the main control module, a power input end of the wireless transmission chip M1 is connected to a power output end of a transformer chip U2, and a power input end of the transformer chip U2 is connected to a first power output end of the charging module.

6. A weighing scale shelf monitoring circuit according to claim 2, characterized in that: The monitoring circuit further comprises an extended asynchronous serial port module, and a data port of the extended asynchronous serial port module is connected to a data port of the main control module.

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