Intelligent goods shelf position guiding weighing transmitter

Abstract

The utility model discloses an intelligent goods shelf position guiding weighing transmitter which comprises a power supply input circuit, a communication circuit, an ADC weighing module, a double-path LDO power supply module, an RGB three-color indicating lamp control circuit, a touch switch and an MCU master control module. The power supply input circuit is connected in series with an anti-reverse connection diode through a transient suppression diode to form a protection front end, and the double-path LDO power supply module supplies power to the weighing sensor and the internal circuit respectively. The ADC weighing module is connected with a weighing sensor, and converts an analog signal into a digital signal to be processed by the MCU master control module. The communication circuit adopts an RS485 chip and parallel double terminals to realize cascade communication. The MCU master control module controls the color and brightness of the RGB three-color indicator lamp through PWM signals, and the touch switch is used for operation confirmation and counting. The transmitter integrates various functional modules, realizes high-precision weighing, position guidance, inventory management and low-power-consumption operation, effectively reduces the cost and maintenance difficulty, and improves the efficiency and reliability of an intelligent shelf system.

Description

Technical Field

[0001] This utility model relates to the field of weighing transmitter technology, and in particular to an intelligent shelf location guidance weighing transmitter. Background Technology

[0002] Intelligent shelving is an advanced warehousing equipment that integrates modern information technology, automated control technology, and warehouse management concepts. Through sensors, the Internet of Things (IoT), big data, and other technologies, it achieves automatic identification, storage, management, and retrieval of goods. It can monitor real-time information such as inventory quantity, location, and inbound / outbound times, greatly improving the efficiency and accuracy of warehouse management. The core function of traditional shelving systems is to monitor the weight of materials in storage locations using weighing sensors, combined with data communication to achieve inventory management. However, existing technological solutions have significant shortcomings in terms of cost, energy efficiency, and user experience.

[0003] In the field of intelligent weighing racks, the main solutions fall into two categories: weighing controllers with integrated touchscreen displays and digital weighing sensors. The former enables human-machine interaction through an integrated display screen, supporting functions such as weight display and inventory alarms; the latter relies on digital sensors to directly output weight signals and connects to a host computer via bus communication. Although these two technologies are widely used in the market, they have the following drawbacks:

[0004] 1. Weighing controllers with integrated touchscreen displays are expensive, requiring high-performance processors and display hardware, leading to increased overall power consumption. They typically require external power and cannot support low-power modes. Furthermore, the displays are susceptible to dust, oil, or mechanical impact in industrial environments, resulting in a higher failure rate.

[0005] 2. While digital weighing sensors simplify the data acquisition process, they lack location guidance functionality. In large racking systems, operators must rely on external indicators, such as paper labels or individual indicator lights, to locate the target storage location, leading to low operational efficiency. Furthermore, if the communication module built into the digital sensor fails, the entire sensor must be replaced, resulting in high after-sales maintenance costs and a long maintenance cycle.

[0006] Therefore, it is necessary to improve an existing intelligent shelf location guidance weighing transmitter to solve the above problems. Summary of the Invention

[0007] This utility model overcomes the shortcomings of the prior art and provides an intelligent shelf position guidance weighing transmitter, which aims to solve the problems of high cost, high power consumption and susceptibility to environmental interference of existing weighing controllers with display touch screens, as well as low operating efficiency and high after-sales maintenance costs caused by the lack of position guidance function of digital weighing sensors.

[0008] In order to achieve the above object, the utility model adopts the technical scheme, which is a kind of intelligent shelf position guiding weighing transmitter, comprising: power input circuit, communication circuit, ADC weighing module, two-way LDO power module, RGB three-color indicator lamp control circuit, touch switch and MCU master module, it is characterized in that;

[0009] The power input circuit is connected in series with transient suppression diode D2 and anti-reverse diode D4, forming a power protection front end;

[0010] The two-way LDO power module is connected with the output end of power input circuit respectively, wherein the first LDO directly powers the external weighing sensor, and the second LDO is internally powered;

[0011] The ADC weighing module is connected with the weighing sensor through analog signal input interface, and the digital output end of the ADC weighing module is connected with the MCU master module;

[0012] The communication circuit comprises RS485 chip and parallel double terminals, and the parallel double terminals adopt one-in-one-out parallel structure to realize cascade communication;

[0013] The RGB three-color indicator lamp control circuit is driven by three control transistors through PWM signal of MCU master module, and the three control transistors are connected with RGB three-color lamp one by one, realizing color mixing and brightness adjustment;

[0014] The touch switch is connected with MCU master module, and is used for triggering operation confirmation and counting signal;

[0015] The MCU master module communicates with the ADC weighing module, communicates with the RS485 chip, and controls the state of RGB three-color indicator lamp control circuit and touch switch through PWM respectively.

[0016] In a preferred embodiment of the utility model, the parallel double terminals are P2 and P3;The parallel double terminals adopt one-in-one-out interface structure, realize the cascade of the output terminal of previous transmitter and the input terminal of subsequent transmitter, and realize the serial communication of multiple transmitters.

[0017] In a preferred embodiment of the utility model, in the RGB three-color indicator lamp control circuit, MCU master module controls the conduction duty ratio of transistor Q2, Q3 and Q4 through three independent PWM signals respectively, realizes the brightness grading adjustment of red, green and blue three-color LED, and generates dynamic color indication signal through three-color light mixing.

[0018] In a preferred embodiment of the utility model, the ADC weighing module adopts a 24-bit high-precision analog-digital conversion chip with a model of CS1237, the input end is connected with the analog signal output end of the weighing sensor through a differential amplification circuit, and the output end communicates with the MCU master control module through an SPI interface.

[0019] In the dual-path LDO power module, the output end of the first-path LDO is connected with the weighing sensor after a series connection of a resistor R23, the output end of the second-path LDO is directly connected with the internal circuit, and the inputs of the dual-path LDO power module are all isolated from the power input circuit through magnetic beads.

[0020] In a preferred embodiment of the utility model, the internal memory circuit is further included, the memory adopts an EEPROM chip, and is connected with the MCU master control module.

[0021] In a preferred embodiment of the utility model, the light touch switch is connected with the MCU master control module in a low-level triggering mode.

[0022] In the power input circuit, the cathode of a transient suppression diode D2 is connected with the power input positive pole, the anode of the D2 is connected with the anode of an anti-reverse connection diode D4 in series, the cathode of the D4 is output to the dual-path LDO power module, and a series protection structure is formed.

[0023] In a preferred embodiment of the utility model, the communication circuit further includes surge suppression diodes D1 and D3 and protection resistors R8 and R10, the resistance values of the R8 and R10 are 120Ω±1%, and the clamping voltages of the D1 and D3 are 4-6V.

[0024] In a preferred embodiment of the utility model, the MCU master control module triggers the material taking counting function through detection of the falling edge signal of the light touch switch, and drives the RGB three-color indicator lamp control circuit to be switched to an operation confirmation color state.

[0025] The utility model solves the defects in the background art, and has the following beneficial effects:

[0026] (1) The utility model discloses a RGB three -color pilot lamp control circuit and the combination of light touch switch and MCU main control module: RGB three -color pilot lamp control circuit is driven three control transistors by MCU main control module through PWM signal, connects red, green, blue three -color lamp respectively, realizes color mixing and brightness adjustment, is used for guiding the position of goods location and prompting the state of inventory, light touch switch is connected with MCU main control module, adopts low -level trigger mode, when the operating personnel press light touch switch, and MCU main control module detects falling edge signal, triggers the material taking counting function, and parallelly moves RGB three -color pilot lamp control circuit and switches for operation confirmation color state, provides intuitive visual guidance and convenient operation interactive interface for operating personnel, makes operating personnel be able to position goods location quickly, accurately, and carries out material taking operation and counting, improves the operation efficiency, simultaneously through the feedback of color change and pilot lamp state, timely reminds the management personnel and pays attention to the inventory condition, compared with prior art, further strengthens the user friendliness and operation convenience of intelligent goods shelf system.

[0027] (2) The utility model discloses the combination of communication circuit and parallel double terminal: the RS485 chip in communication circuit is combined with parallel double terminal, adopts one -in one -out parallel structure and realizes cascade communication;Make a plurality of transmitters can conveniently carry out series cascade, just need to connect the output terminal of previous transmitter with the input terminal of latter transmitter, can easily realize the communication between a plurality of transmitters, simplify the wiring process, reduce the complexity of line, guarantee the stable transmission of signal simultaneously, reduce the risk of signal interference, improve the expansibility and reliability of system, when needing to monitor and manage a plurality of goods locations in intelligent goods shelf system, this kind of combination mode can construct communication network conveniently and quickly, realizes centralized control and data acquisition, compared with prior art, further improve the integration and easy -to -use of system

[0028] (3) The utility model discloses the combination of ADC weighing module and MCU main control module: ADC weighing module is connected with weighing sensor through analog signal input interface, converts analog weight signal outputted by weighing sensor into digital signal, and its adopted CS1237 chip has 24 bit high -precision analog -to -digital conversion function, can accurately measure tiny voltage change, thereby realizes high -precision measurement to goods location weight. MCU main control module communicates with ADC weighing module through SPI interface, receives digital signal and processes and analyzes, judges the inventory condition of goods location;Realized high -precision weight data acquisition and processing, provided reliable data support for inventory management, simultaneously, MCU main control module can also according to the data after processing through communication circuit and other equipment, realizes position guide, inventory alarm and other functions, compared with prior art, further improved the accuracy and real -time of intelligent goods shelf system to goods weight monitoring, optimized the efficiency and effect of inventory management

[0029] (4)The utility model discloses a power input circuit and two -way LDO power module are combined: power input circuit is connected in series through transient suppression diode D2 and anti -reversal diode D4, forms the power protection front end, provides stable reliable power input for whole device, and has anti -reversal and voltage protection function, two -way LDO power module is connected with power input circuit output end respectively, wherein the first LDO directly is powered for external weighing sensor, and the second LDO is powered for internal circuit, realizes the independent distribution and isolation of power, effectively avoids the power interference between sensor and internal circuit, ensures that weighing sensor can accurately measure weight signal, guarantees the stable operation of internal circuit simultaneously, improves the stability and reliability of whole intelligent goods shelf position guiding weighing transmitter, compared with prior art, further strengthens the adaptability and anti -interference ability of device in complex industrial environment. BRIEF DESCRIPTION OF DRAWINGS

[0030] The utility model will be further explained in connection with the drawings and examples;

[0031] Figure 1 It is the power input circuit diagram of the preferred embodiment of the utility model;

[0032] Figure 2 It is the communication circuit diagram of the preferred embodiment of the utility model;

[0033] Figure 3 It is the parallel double terminal of the preferred embodiment of the utility model;

[0034] Figure 4 It is the RGB three color indicating lamp control circuit diagram of the preferred embodiment of the utility model;

[0035] Figure 5 It is the ADC weighing module diagram of the preferred embodiment of the utility model;

[0036] Figure 6 It is the two -way LDO power module diagram of the preferred embodiment of the utility model;

[0037] Figure 7 It is the internal memory circuit diagram of the preferred embodiment of the utility model;

[0038] Figure 8 It is the MCU main module diagram of the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0039] The utility model will be further explained in connection with the drawings and examples, these drawings are all simplified schematic diagram, just with the schematic way the basic structure of the utility model is explained, therefore it just shows the constitution related with the utility model.

[0040] SUMMARY OF THE INVENTION:

[0041] Current intelligent shelf systems generally rely on traditional weighing controllers or digital sensor solutions to achieve accurate inventory management, but there are obvious bottlenecks in their functions and costs. In the traditional solution, the weighing controller integrated with a display screen can provide a human-machine interface, but the hardware cost is high, the power consumption is large, and the screen is easily disturbed by the environment in the industrial environment, resulting in a shortened service life. While the digital weighing sensor simplifies data transmission, it cannot directly provide a storage location guide and needs to be equipped with an additional indication device, resulting in system complexity and rising maintenance costs. In addition, due to the low degree of modular integration, the sensor and the communication unit are closely coupled, and once there is a local fault, the entire device needs to be replaced, resulting in low maintenance efficiency. These problems restrict the large-scale application of intelligent shelves in low-cost and high-reliability scenarios.

[0042] The present application proposes an intelligent shelf position guide weighing transmitter, which solves the defects of the prior art through hardware function integration and communication architecture optimization.

[0043] Exemplary device:

[0044] An intelligent shelf position guide weighing transmitter, comprising: a power input circuit, a communication circuit, an ADC weighing module, a dual-channel LDO power module, an RGB three-color indicator light control circuit, and an MCU main control module.

[0045] The power supply circuit realizes voltage surge protection and polarity protection through transient suppression diodes and reverse connection protection diodes; the communication module adopts an RS485 chip and a parallel double-terminal interface design; the ADC weighing module converts the analog signal of the weighing sensor into a 24-bit digital signal using a high-precision ADC chip, and combines with the stored calibration parameters to realize accurate weight calculation; the RGB three-color indicator light control circuit mixes colors through PWM dimming, and dynamically indicates the storage location and inventory status by the MCU main control module; the dual-channel LDO power module isolates the sensor from the internal circuit power supply interference, and the micro switch provides user operation confirmation and counting functions, and the MCU main control module coordinates data acquisition, communication interaction, status prompting, and inventory management; the MCU main control module communicates with the ADC weighing module, communicates with the RS485 chip, and controls the state of the RGB three-color indicator light control circuit and the micro switch through PWM respectively.

[0046] As shown in Figure 1 , the power input circuit is the basic guarantee for the stable operation of the intelligent shelf position guide weighing transmitter, and provides stable power supply for the entire device and has reverse connection and voltage protection functions; it is mainly composed of transient suppression diodes D2 and diodes D4 and other elements.

[0047] The transient suppression diode D2 is used to absorb the surge voltage of the power input end, preventing overvoltage damage to the circuit. During the operation of the circuit, instantaneous high voltage pulses may occur, such as lightning strikes, power surges, etc. These high voltage pulses may cause damage to other components in the circuit; D2 can clamp the excessive voltage to a safe range in an instant, preventing high voltage from impacting the subsequent circuit, ensuring the stability of the entire circuit;

[0048] The diode D4 is used to prevent short circuit caused by reverse connection of the line; in actual use, the positive and negative poles of the power supply may be connected in reverse, and if there is no protection of D4, the reversed power supply may cause a short circuit in the circuit, damaging the components. D4 has unidirectional conductivity, and only when the positive and negative poles of the power supply are connected correctly, the current can pass normally, thereby avoiding circuit failure caused by reverse connection of the line, improving the safety and reliability of the product. In the power input circuit, the cathode of the transient suppression diode D2 is connected to the positive pole of the power input, and the anode of the anti-reverse connection diode D4 is connected in series, and the cathode of D4 is output to the dual-channel LDO power module, forming a series protection structure.

[0049] As shown in Figure 2 , the communication circuit is used for transmitting data and communicating in the intelligent shelf position guiding weighing transmitter; wherein Q1 is used as a TXT and RXT direction adjusting element, which can switch the data sending and receiving direction according to the communication requirement, ensuring the accurate transmission of data, which is automatically switched by the MCU main control module; U2 is an RS485 chip, which is the core of the communication circuit, responsible for encoding and decoding digital signals, realizing communication with other devices; U3 is a line protection chip, used to suppress electromagnetic interference and electrostatic discharge, ensuring the stability of communication.

[0050] R8 and R10 are protective resistors, which play a role in voltage reduction protection, and can limit the size of the current when short circuit or overcurrent occurs in the circuit, preventing excessive current from damaging the chip; D1 and D3 are surge suppression diodes, used to suppress surges, which can quickly absorb the surge energy when the circuit is subjected to instantaneous high energy impact, protecting the communication line and chip from damage; wherein the resistance value of R8, R10 is 120Ω±1%, and the clamping voltage of D1, D3 is 4-6V.

[0051] As shown in Figure 3The parallel double-terminal is a core communication interface module of the communication circuit, and P2 and P3 are directly connected to the RS485 communication circuit of the transmitter; P2 and P3 are parallel double-terminals, and adopt an in-out structure, which has a significant advantage in cascading; by cascading the output terminal of the previous transmitter with the input terminal of the next transmitter, the series communication of multiple transmitters is realized, and P2 and P3 are directly connected to the differential signal line of the RS485 chip. In the intelligent shelf system, multiple weighing transmitters may be cascaded to monitor and manage multiple storage locations; the in-out structure of the parallel double-terminal makes cascading more convenient, and the output of the previous transmitter can be easily connected to the input of the next transmitter to realize the series connection of multiple transmitters; the wiring process is simplified, the complexity of the circuit is reduced, and the scalability of the system is improved; in addition, the structure of the parallel double-terminal can also ensure stable transmission of signals, reduce signal interference, and ensure the reliability and accuracy of the system.

[0052] As shown in Figure 4 The RGB three-color indicator lamp control circuit is used to guide the storage location by color change and prompt the inventory status; the RGB three-color lamp P1 is composed of red, green and blue three-color LEDs, which can mix and adjust the color; the control transistors Q2, Q3 and Q4 drive the switching of the three-color LEDs respectively, and the brightness is adjusted by the PWM signal of the MCU master module; the control logic sends different control signals through the communication circuit to control the conduction and cutoff of Q2, Q3 and Q4, so as to realize the brightness grading adjustment of the red, green and blue three-color LEDs, and generate dynamic color indication signals by mixing the three-color light.

[0053] The touch switch S1 is used to provide a user interaction interface for operation confirmation; for example, after the material taking is completed, the operator can press the touch switch to send a signal to the system that the material taking is completed, realizing the material taking confirmation function; at the same time, the touch switch can also be used for material taking counting, and the system records a material taking operation every time the switch is pressed once, which is convenient for the statistics and management of the material taking quantity. The touch switch is connected to the MCU master module in a low-level triggering mode, the MCU master module triggers the material taking counting function by detecting the falling edge signal of the touch switch, and the RGB three-color indicator lamp control circuit is switched to the operation confirmation color state.

[0054] As shown in Figure 5As shown, the ADC weighing module is used to measure the quantity value of the goods, by collecting the analog signal of the weighing sensor and converting it into a digital signal for the MCU master module to process. The input end is connected to the analog signal output end of the weighing sensor through a differential amplification circuit, and the output end communicates with the MCU master module through an SPI interface. A high-precision ADC chip CS1237 is used, which is based on analog-to-digital conversion technology and can convert analog weight signals into digital signals. When the goods are placed on the weighing sensor, the sensor outputs an analog voltage signal, which is input into the CS1237 after amplification and filtering. The CS1237 has a high-precision resolution of 24 bits, which can accurately measure small voltage changes and achieve high-precision measurement of the quantity value of the goods. Its advantage is that it can provide accurate and stable measurement results, providing reliable data support for inventory management. At the same time, it also has good anti-interference ability and can work normally in complex industrial environments.

[0055] As shown in Figure 6 The dual-channel LDO power module provides independent power supply to avoid mutual interference. It is divided into two channels, one for powering the sensor and the other for powering the internal circuit. The sensor has a high requirement for power stability, and the dual-channel LDO can provide stable and pure power for the sensor to ensure its normal operation and measurement accuracy. The internal circuit also needs stable power supply, and the other LDO meets this demand. R23 plays a role in voltage protection, reducing the voltage to a safe range when the power voltage is too high to prevent damage to circuit components. In the dual-channel LDO power module, the output end of the first LDO is connected to the weighing sensor through a resistor R23, and the output end of the second LDO is directly connected to the MCU master module and internal circuit. The inputs of both LDOs are isolated from the power input circuit by a magnetic bead.

[0056] As shown in Figure 7 The internal memory circuit is used to store relevant calibration data, and the internal memory uses an EEPROM chip and is connected to the MCU master module. In the weighing process, calibration of the sensor is needed to ensure the accuracy of the measurement, and a set of accurate calibration data is obtained. These calibration data are stored in the internal memory, and the system will correct the measurement results based on the stored calibration data at each weighing to ensure the accuracy of the weighing. In addition, the internal memory can also store other important parameters and data, such as device configuration information and historical weighing data, so that the device can retain the previous settings and data after power failure or restart without the need for recalibration and configuration.

[0057] As shown in Figure 8As shown, the MCU master module is used for coordinating and controlling each component, ensuring the normal operation of the whole system; the MCU master module receives weight data from the ADC weighing module, processes and analyzes it, and judges the inventory situation of the storage location; at the same time, the MCU master module exchanges data with other devices through the communication circuit according to the demand, realizes the functions of position guidance, inventory management, etc.; in addition, the MCU master module also controls the work of the RGB three-color indicator light control circuit, and realizes the corresponding functions according to the operation of the operator and the instructions of the system.

[0058] When the utility model is used, the weighing sensor outputs an mV-level analog signal proportional to the weight of the storage location, and the signal is input into the ADC weighing module after high-frequency noise is removed by the filtering circuit; the MCU master module reads the ADC data and calculates the actual weight in combination with the calibration parameters; the MCU master module adjusts the PWM duty cycle of Q2-Q4 and mixes RGB colors after analyzing the instructions through the communication circuit; the operator presses the tactile switch, the MCU master module detects the low-level signal, the MCU master module records the current change of the weight of the storage location, uploads the event through the communication circuit, and the MCU master module updates the inventory data in the internal memory and sends new instructions to control the RGB three-color indicator light control circuit.

[0059] Embodiment one:

[0060] The intelligent shelf position guidance weighing transmitter can realize the position guidance function, mainly through the RS485 lighting of the RGB three-color light on the transmitter to realize, the principle is based on RS485 communication protocol, which allows the transmitter to stably transmit data with other devices; when the system receives the material taking instruction, it will send a control signal to the transmitter of the corresponding storage location through RS485 communication according to the storage location information specified in the instruction.

[0061] After the transmitter receives the signal, the internal MCU chip will analyze and process the signal, and then control Q2, Q3 and Q4 to be turned on or cut off, so as to realize the control of the RGB three-color light color.

[0062] The position guidance function can significantly improve the material taking efficiency of the on-site operator. In a large warehouse environment, there are many shelves and complex storage locations, and the operator often needs to spend a lot of time looking for the required goods; the intuitive indication of the RGB three-color light can quickly locate the material taking position for the operator, reducing the time and effort to find the goods; at the same time, through RS485 communication, the color and flashing mode of the light can be flexibly controlled, further enhancing the guidance effect.

[0063] Embodiment two:

[0064] The intelligent shelf position guiding load cell can realize the inventory management function. The load cell monitors the weight change of the goods on the shelf in real time through a high-precision load sensor. When the goods are taken away and the weight of the shelf gradually decreases to the preset inventory shortage threshold, the load cell will transmit this information to the system through RS485 communication. After receiving the signal, the system can process according to the preset rules, for example: control the RGB three-color light to light up a specific color, remind the manager to replenish in time.

[0065] This real-time monitoring and reminding mechanism avoids the problem of production stagnation or order delay caused by insufficient inventory. The manager can arrange the replenishment plan in time according to the reminding information to ensure the continuous supply of goods. At the same time, through the real-time recording and analysis of inventory data, the inventory management strategy can also be optimized to reasonably control the inventory level and reduce inventory accumulation and capital occupation.

[0066] According to the ideal embodiment of the present application, the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. An intelligent shelf location guidance load cell transmitter comprising: The power input circuit, the communication circuit, the ADC weighing module, the dual-channel LDO power module, the RGB three-color indicator lamp control circuit, the light touch switch, and the MCU main control module are characterized in that; The power input circuit is connected in series with the transient suppression diode D2 and the reverse connection prevention diode D4 to form a front end of power supply protection; The dual-channel LDO power module is connected with the output end of the power input circuit, wherein the first channel LDO directly supplies power to the external weighing sensor, and the second channel LDO supplies power internally. The ADC weighing module is connected with the weighing sensor through an analog signal input interface, and the digital output end of the ADC weighing module is connected with the MCU main control module. The communication circuit comprises an RS485 chip and a parallel double terminal, and the parallel double terminal adopts a one-in-one-out parallel structure to realize cascaded communication. The RGB three-color indicator lamp control circuit is driven by the MCU main control module through a PWM signal to control three control transistors, the three control transistors are connected with RGB three-color lamps one by one to realize color mixing and brightness adjustment. The light touch switch is connected with the MCU main control module to trigger operation confirmation and counting signals. The MCU main control module communicates with the ADC weighing module, communicates with the RS485 chip, and controls the state of the RGB three-color indicator lamp control circuit and the light touch switch through PWM respectively.

2. The intelligent shelf location guided load cell of claim 1, wherein: The parallel double terminal is P2 and P3, and adopts a one-in-one-out interface structure to realize cascaded communication of multiple transmitters by cascading the output terminal of a previous transmitter with the input terminal of a subsequent transmitter.

3. The intelligent shelf location guided load cell of claim 1, wherein: In the RGB three-color indicator lamp control circuit, the MCU main control module controls the conduction duty cycle of transistors Q2, Q3 and Q4 through three independent PWM signals to realize brightness grading adjustment of red, green and blue three-color LEDs, and generates dynamic color indication signals through three-color light mixing.

4. The intelligent shelf location guided load cell of claim 1, wherein: The ADC weighing module adopts a 24-bit high-precision analog-to-digital conversion chip CS1237, the input end is connected with the analog signal output end of the weighing sensor through a differential amplification circuit, and the output end communicates with the MCU main control module through an SPI interface.

5. The intelligent shelf location guided load cell of claim 1, wherein: In the dual-channel LDO power module, the output end of the first channel LDO is connected with the weighing sensor through a resistor R23, and the output end of the second channel LDO is directly connected with internal circuits, and the input ends of the dual-channel LDO power module are isolated from the power input circuit through magnetic beads.

6. The intelligent shelf location guided load cell of claim 1, wherein: It also comprises an internal memory circuit, the memory adopts an EEPROM chip, and is connected with the MCU main control module.

7. The intelligent shelf location guided load cell of claim 1, wherein: The light touch switch is connected with the MCU main control module in a low-level triggering mode.

8. The intelligent shelf location guided load cell of claim 1, wherein: In the power input circuit, the cathode of the transient suppression diode D2 is connected with the positive electrode of the power input, the anode is connected in series with the anode of the reverse connection prevention diode D4, the cathode of D4 is output to the dual-channel LDO power module to form a series protection structure.

9. The intelligent shelf location guided load cell of claim 1, wherein: The communication circuit further comprises surge suppression diodes D1 and D3, and protection resistors R8 and R10, wherein the resistance values of R8 and R10 are 120Ω±1%, and the clamping voltages of D1 and D3 are 4-6V.

10. The intelligent shelf location guided load cell of claim 1, wherein: The MCU master module triggers the material taking counting function by detecting the falling edge signal of the touch switch, and links the RGB three-color indicator light control circuit to switch to the operation confirmation color state.

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