Intelligent equipment based on wired communication and signal acquisition
Through intelligent devices based on wired communication and signal acquisition, precise control of logistics automation equipment is achieved, solving the problems of low efficiency and low accuracy in existing technologies, improving the work efficiency of equipment and personnel, and avoiding waste of manpower and damage to goods.
Patent Information
- Application Number
- CN202422772493.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The existing logistics automation equipment control has the problems of high equipment cost and low degree of automation, resulting in low efficiency and low accuracy. In addition, the equipment operation process is prone to waste manpower, resulting in cargo backlog and damage.
It uses intelligent devices based on wired communication and signal acquisition, conducts real-time communication through controllers and industrial computers, and combines multiple interface modules and sensors to achieve intelligent coordination between equipment and operators, and perform precise control and data interaction.
It achieves efficient coordination between equipment and personnel, avoids inaccurate data, improves work efficiency and accuracy, reduces manpower waste, and ensures efficient and safe equipment operation.
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Figure CN223413633U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of logistics automation equipment control, in particular to an intelligent device based on wired communication and signal acquisition. Background Art
[0002] Automated logistics equipment control is a key component of modern logistics. Relying on advanced computer technology, sensor technology, automated control technology, and other technologies, it enables automated, intelligent, and efficient logistics operations. Automated control technology achieves precise control of every step of the production line through the collaborative work of devices such as PLCs (Programmable Logic Controllers), sensors, and actuators. Intelligent identification and sorting technologies (such as RFID, barcode scanning, and image recognition) enable rapid and accurate identification of cargo during sorting, enabling rapid sorting and delivery in conjunction with high-speed sorting robots or automated conveyor lines. Through the Internet of Things (IoT) platform, companies can remotely monitor the operating status of equipment, identifying and resolving potential issues promptly.
[0003] After searching, the patent with application number CN202111564777.7 discloses a cloud-edge collaborative logistics equipment control method and system, which belongs to the field of logistics management and control. In response to the existing problems of high control cost and low automation of logistics equipment, the utility model provides a cloud-edge collaborative logistics equipment control method, including logistics terminal equipment in two modes: online or offline; when the logistics terminal equipment is in online mode: the cloud platform analyzes the received data and the operating status of the logistics terminal equipment, and the cloud platform schedules the logistics terminal equipment through the edge gateway; when the logistics terminal equipment is in offline mode: data is collected and processed for several logistics terminal devices, and several terminal logistics equipment are self-operated and self-scheduled. The utility model enriches the use scenarios of the equipment by performing different controls when the logistics terminal equipment is in two states: online or offline; and effectively avoids the complexity and high cost of change of previous PLC centralized control equipment, and has high automation efficiency.
[0004] The related technology known in the prior art is to realize the control of logistics automation equipment through single-chip microcomputer technology. This technology mainly uses weak current control of embedded hardware and does not have the characteristics of unique device identification, remote intelligent control, fault self-detection, and simultaneous processing of multiple signal inputs and outputs.
[0005] In addition, the existing control mode is that the equipment is working and the backend does not enter data for delivery. During the operation of the equipment, problems such as waste of manpower, low efficiency, low accuracy, and inaccurate data will occur. If the personnel are too busy and the equipment is out of control, not only will there be a backlog of goods, resulting in the goods being placed randomly, but the goods will also need to be reorganized, affecting work efficiency, and even worse, the goods will be damaged.
[0006] Therefore, we need to propose an intelligent device based on wired communication and signal acquisition to realize data collection and precise control of logistics automation equipment, thereby improving personnel work efficiency and accuracy. Summary of the Invention
[0007] The purpose of this utility model is to provide an intelligent device based on wired communication and signal acquisition, which performs intelligent control according to the equipment tasks and the actual operation conditions of the operators, thereby achieving efficient coordination between equipment and personnel without the occurrence of data inaccuracies and the like. The equipment is adjusted through background data and the actual conditions of the operators to ensure that the operating efficiency of the equipment and the work efficiency of the personnel are matched in real time, so as to avoid wasting manpower and maximize efficiency, so as to solve the problems raised in the above-mentioned background technology.
[0008] To achieve the above object, the present invention provides the following technical solution: an intelligent device based on wired communication and signal acquisition, comprising a controller and an industrial computer that use wired communication to communicate in real time, the industrial computer being provided with a device interface module, one side of the device interface module being provided with an RS232 interface, a key input interface, a DL interrupt interface, an RS485 interface, a CAN interface, and a power supply interface;
[0009] The other side of the device interface module is provided with a dual-color LED indicator light control interface, a signal input interface for connecting a sensor, and a signal output interface for controlling a switch device;
[0010] The power interface is set as a DC 12V power interface, a synchronous buck regulator is connected to the power interface, and a main control circuit connected to the device interface module is provided on the controller.
[0011] Preferably, the main control circuit includes a processor chip U3, a terminal block J2, a MOS tube Q1, and a MOS tube Q2. Pin 1 of the terminal block J2 is connected to resistors R16, R17, and R18 arranged in parallel. A resistor R14 is connected between pin 2 of the terminal block J2 and the D pole of the MOS tube Q1. A resistor R15 is connected between pin 3 of the terminal block J2 and the D pole of the MOS tube Q2.
[0012] Preferably, the signal input interface includes a multi-channel signal input circuit, and the signal input circuit includes a MOS tube Q60, the G pole of the MOS tube Q60 is respectively connected to the resistor R85 and the resistor R76, the D pole of the MOS tube Q60 is connected to the resistor R71 connected to the working voltage, and the D pole of the MOS tube Q60 is connected to the 20 pin of the processor chip U3.
[0013] Preferably, the signal output interface includes a multi-channel signal output circuit, which includes a MOS transistor Q86 and a MOS transistor Q90. A resistor R125 is connected to the connection terminal of the G pole of the MOS transistor Q86 and the D pole of the MOS transistor Q90. The D pole of the MOS transistor Q86 is connected to a resistor R121. One end of the resistor R121 is connected to the input terminal of the power supply. The G pole of the MOS transistor Q90 is connected to a resistor R132. The G pole of the MOS transistor Q90 is connected to pin 36 of the processor chip U3.
[0014] Preferably, the RS232 interface includes an RS232 communication interface circuit, which includes a communication chip U21 and a terminal block J21. A capacitor C21 is connected between pins 1 and 3 of the communication chip U21, a capacitor C25 is connected between pins 4 and 5 of the communication chip U21, a capacitor C24 is connected to pin 2 of the communication chip U21, a capacitor C26 is connected to pin 6 of the communication chip U21, a resistor R22 and an inductor B22 are connected in series to pin 7 of the communication chip U21, and a resistor R23 and an inductor B23 are connected in series to pin 8 of the communication chip U21;
[0015] Pin 9 of the communication chip U21 is connected to pin 43 of the processor chip U3, pin 10 of the communication chip U21 is connected to pin 42 of the processor chip U3, one end of the inductor B23 is connected to pin 2 of the terminal block J21, and one end of the inductor B22 is connected to pin 3 of the terminal block J21.
[0016] Preferably, the CAN interface includes a CAN bus circuit, which includes a chip U20 and a transformer B3. Pin 1 of the chip U20 is connected to pin 62 of the processor chip U3, pin 4 of the chip U20 is connected to pin 61 of the processor chip U3, pin 7 of the chip U20 is connected to pin 1 of the transformer B3, and pin 6 of the chip U20 is connected to pin 3 of the transformer B3; a series capacitor C27, a capacitor C28, and an electrostatic diode D20 are connected in parallel between pins 2 and 4 of the transformer B3.
[0017] Preferably, the RS485 interface includes an RS485 communication interface circuit, and the RS485 communication interface circuit includes a chip U23 and a transformer B1. Pin 1 of the chip U23 is connected to pin 52 of the processor chip U3, pins 2 and 3 of the chip U23 are connected to pin 50 of the processor chip U3, and pin 1 of the chip U23 is connected to pin 51 of the processor chip U3.
[0018] A resistor R29 is connected between the connection terminal between pin 7 of the chip U23 and pin 1 of the transformer B1 and between pin 6 of the chip U23 and pin 3 of the transformer B1. A suppression diode D24 is connected between pins 2 and 3 of the transformer B1.
[0019] Preferably, the synchronous buck regulator includes a voltage stabilizing circuit, which includes a voltage stabilizing chip U1, a capacitor C1 is connected between pin 1 and pin 6 of the voltage stabilizing chip U1, a resistor R4 is connected between pin 4 and pin 5 of the voltage stabilizing chip U1, and a capacitor C3 and a capacitor C7 arranged in parallel are also connected to pin 5 of the voltage stabilizing chip U1. An inductor L1 and a resistor R3 are connected between pin 3 and pin 6 of the voltage stabilizing chip U1, and the connection terminals of the inductor L1 and the resistor R3 are connected to capacitors C4 and C5 arranged in parallel, and a diode D1 that outputs a 5V voltage.
[0020] Compared with the prior art, the beneficial effects of the present invention are:
[0021] 1. This utility model performs intelligent control according to the equipment tasks and the actual operation conditions of the operators, thereby achieving efficient coordination between equipment and personnel without the occurrence of data inaccuracy;
[0022] 2. The utility model adjusts the equipment through background data and the actual situation of the operators, ensuring that the operating efficiency of the equipment and the work efficiency of the operators are matched in real time, thus avoiding wasting manpower and maximizing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a schematic diagram of the interface module of the device of the present utility model;
[0024] Figure 2 This is a circuit diagram of the signal input circuit of the utility model;
[0025] Figure 3 This is a circuit diagram of the signal output of the utility model;
[0026] Figure 4 This is a circuit diagram of the RS232 communication interface circuit of the utility model;
[0027] Figure 5 This is a circuit diagram of the CAN bus circuit of the utility model;
[0028] Figure 6 This is a circuit diagram of the RS485 communication interface circuit of the utility model;
[0029] Figure 7 This is a circuit diagram of the voltage stabilizing circuit of the utility model;
[0030] Figure 8 This is the circuit diagram of the main control circuit of the utility model. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0032] See also Figure 1-8 The utility model provides a technical solution: an intelligent device based on wired communication and signal acquisition, which can realize local management or remote management, and accurately control the operating status of the flow unloading platform, including the operation, stop, light prompt and automatic fault alarm of the equipment; including:
[0033] A controller and an industrial computer that use wired communication to communicate in real time. The industrial computer is provided with a device interface module. One side of the device interface module is provided with an RS232 interface, a key input interface, a DL interrupt interface, an RS485 interface, a CAN interface, and a power supply interface.
[0034] Data set interaction is carried out through wired communication interfaces (RS485 interface, RS232 interface), industrial computers, and controllers to achieve data collection and precise equipment control, thereby improving personnel work efficiency and accuracy.
[0035] This equipment is mainly used for cargo sorting in industrial automation communications and express logistics, loading and unloading of warehouse cargo, and startup, operation and alarm prompts of automation equipment.
[0036] The other side of the device interface module is provided with a dual-color LED indicator light control interface, a signal input interface for connecting a sensor, and a signal output interface for controlling a switch device;
[0037] There is one dual-color LED indicator light control interface, 7 signal input interfaces, and 7 signal output interfaces.
[0038] Sensor types include but are not limited to photoelectric sensors, proximity sensors, infrared sensors, accelerometers, optocouplers, magnetic sensors, etc.
[0039] External devices controlled by switch devices include but are not limited to buttons, alarm lights, relays and other functional devices to control and prompt the equipment.
[0040] The power interface is set as a DC 12V power interface, a synchronous buck regulator is connected to the power interface, and a main control circuit connected to the device interface module is provided on the controller.
[0041] The device has an operating power of 20W and requires a 12V 2A switching power supply.
[0042] The previous model involved equipment operating without data being delivered to the backend. This resulted in wasted manpower, low efficiency, low accuracy, and inaccurate data. The current model implements intelligent control based on equipment tasks and the actual operation of operators, achieving efficient coordination between equipment and operators and preventing data inaccuracies.
[0043] Under the previous model, if personnel were overwhelmed and equipment was out of control, not only would goods pile up, leading to disorderly placement and the need for reorganization, which impacted work efficiency, but could also lead to damage. The current model uses backend data and the actual conditions of operators to adjust equipment, ensuring a real-time match between equipment efficiency and operator productivity, minimizing labor waste while maximizing efficiency.
[0044] This device can realize intelligent data communication with PC, industrial computer, tablet (Android or Windows) or PLC through wired communication technology (RS232, RS485 communication, Internet), realize precise control and data acquisition interaction, and at the same time control the start and stop of motors, calculate and count the number of goods, manage the entry and exit of goods, and detect equipment faults through commands.
[0045] Multiple sensors and control IOs are centrally managed and controlled in separate lines. Information is entered through interaction with backend data on a computer. The device is powered by a 12V DC power supply. Photoelectric sensors detect goods and transmit availability information to a computer or tablet. The device then collects barcode or label information based on the goods' condition and sends it to a backend database. The database matches the barcode information with the goods' address and issues a corresponding command. This command information is transmitted to the device via wired communication, and the device's operating status is controlled based on the received information. The device can also enforce operating states based on keystrokes or fault code information.
[0046] The main control circuit includes a processor chip U3, a terminal block J2, a MOS transistor Q1, and a MOS transistor Q2. Pin 1 of the terminal block J2 is connected to resistors R16, R17, and R18 arranged in parallel. A resistor R14 is connected between pin 2 of the terminal block J2 and the D pole of the MOS transistor Q1. A resistor R15 is connected between pin 3 of the terminal block J2 and the D pole of the MOS transistor Q2.
[0047] Specifically, one end of resistor R16 is connected to pin 48 of processor chip U3 (connected to 3.3V operating voltage), resistor R17 is connected to 5V voltage, and resistor R18 is connected to the power input terminal;
[0048] The G pole of the MOS tube Q1 is connected to the 58th pin of the processor chip U3, and the G pole of the MOS tube Q2 is connected to the 57th pin of the processor chip U3.
[0049] The main control circuit also includes terminal blocks J4 and J5. Pin 1 of terminal block J4 is connected to pin 1 of terminal block J5, pin 2 of terminal block J4 is connected to pin 2 of terminal block J5, pin 3 of terminal block J4 is connected to pin 3 of terminal block J5, and pin 5 of terminal block J4 is connected to pin 4 of terminal block J5.
[0050] The signal input interface includes a multi-channel signal input circuit, which includes a MOS transistor Q60. The G pole of the MOS transistor Q60 is connected to resistors R85 and R76 respectively, and the D pole of the MOS transistor Q60 is connected to a resistor R71 connected to the working voltage. The D pole of the MOS transistor Q60 is connected to pin 20 of the processor chip U3.
[0051] The signal output interface includes a multi-channel signal output circuit, which includes a MOS transistor Q86 and a MOS transistor Q90. The G terminal of the MOS transistor Q86 and the D terminal of the MOS transistor Q90 are connected to a resistor R125. The D terminal of the MOS transistor Q86 is connected to a resistor R121. One end of the resistor R121 is connected to the input terminal of the power supply. The G terminal of the MOS transistor Q90 is connected to a resistor R132. The G terminal of the MOS transistor Q90 is connected to pin 36 of the processor chip U3.
[0052] The RS232 interface includes an RS232 communication interface circuit, which includes a communication chip U21 and a terminal block J21. A capacitor C21 is connected between pins 1 and 3 of the communication chip U21, a capacitor C25 is connected between pins 4 and 5 of the communication chip U21, a capacitor C24 is connected to pin 2 of the communication chip U21, a capacitor C26 is connected to pin 6 of the communication chip U21, a resistor R22 and an inductor B22 are connected in series to pin 7 of the communication chip U21, and a resistor R23 and an inductor B23 are connected in series to pin 8 of the communication chip U21;
[0053] Pin 9 of the communication chip U21 is connected to pin 43 of the processor chip U3, pin 10 of the communication chip U21 is connected to pin 42 of the processor chip U3, one end of the inductor B23 is connected to pin 2 of the terminal block J21, and one end of the inductor B22 is connected to pin 3 of the terminal block J21.
[0054] Pin 2 of the terminal block J21 is connected to a diode D21 and a capacitor C30, respectively. Pin 3 of the terminal block J21 is connected to a diode D22 and a capacitor C31, respectively. Pin 5 of the terminal block J21 is connected to a capacitor C32, and one end of the capacitor C30, capacitor C31, capacitor C32, diode D21, and diode D22 are all grounded.
[0055] The CAN interface includes a CAN bus circuit, which includes a chip U20 and a transformer B3. Pin 1 of the chip U20 is connected to pin 62 of the processor chip U3, pin 4 of the chip U20 is connected to pin 61 of the processor chip U3, pin 7 of the chip U20 is connected to pin 1 of the transformer B3, and pin 6 of the chip U20 is connected to pin 3 of the transformer B3; capacitors C27 and C28, and an electrostatic diode D20 are connected in parallel between pins 2 and 4 of the transformer B3.
[0056] A resistor R20 and a resistor R21 are connected between pins 6 and 7 of the chip U20 , and one end of the resistor R21 is connected to a capacitor C29 .
[0057] The RS485 interface includes an RS485 communication interface circuit, which includes a chip U23 and a transformer B1. Pin 1 of the chip U23 is connected to pin 52 of the processor chip U3, pins 2 and 3 of the chip U23 are connected to pin 50 of the processor chip U3, and pin 1 of the chip U23 is connected to pin 51 of the processor chip U3.
[0058] A resistor R29 is connected between the connection terminal between pin 7 of the chip U23 and pin 1 of the transformer B1, and between the connection terminal between pin 6 of the chip U23 and pin 3 of the transformer B1. One end of the resistor R29 is connected to a grounded resistor R26, and the other end of the resistor R29 is connected to a resistor R30 connected to 5V. A suppression diode D24 is connected between pins 2 and 3 of the transformer B1.
[0059] A capacitor C36 is connected between pins 1 and 3 of the suppression diode D24 , and a capacitor C40 is connected between pins 2 and 3 of the suppression diode D24 .
[0060] The synchronous buck regulator includes a voltage stabilizing circuit, which includes a voltage stabilizing chip U1. A capacitor C1 is connected between pins 1 and 6 of the voltage stabilizing chip U1, a resistor R4 is connected between pins 4 and 5 of the voltage stabilizing chip U1, and a capacitor C3 and a capacitor C7 arranged in parallel are further connected to pin 5 of the voltage stabilizing chip U1. An inductor L1 and a resistor R3 are connected between pins 3 and 6 of the voltage stabilizing chip U1, and the connection terminals of the inductor L1 and the resistor R3 are connected to capacitors C4 and C5 arranged in parallel, and a diode D1 that outputs a 5V voltage.
[0061] The voltage stabilizing circuit further includes a terminal block J1 , and a capacitor C2 and a diode D2 arranged in parallel are connected between pins 1 and 2 of the terminal block J1 .
[0062] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An intelligent device based on wired communication and signal acquisition, characterized by: It includes a controller and an industrial computer that use wired communication to communicate in real time. The industrial computer is provided with a device interface module. One side of the device interface module is provided with an RS232 interface, a key input interface, a DL interrupt interface, an RS485 interface, a CAN interface, and a power supply interface; The other side of the device interface module is provided with a dual-color LED indicator light control interface, a signal input interface for connecting a sensor, and a signal output interface for controlling a switch device; The power interface is set as a DC 12V power interface, a synchronous buck regulator is connected to the power interface, and a main control circuit connected to the device interface module is provided on the controller.
2. The intelligent device based on wired communication and signal acquisition according to claim 1, characterized in that: The main control circuit includes a processor chip U3, a terminal block J2, a MOS transistor Q1, and a MOS transistor Q2. Pin 1 of the terminal block J2 is connected to resistors R16, R17, and R18 arranged in parallel. A resistor R14 is connected between pin 2 of the terminal block J2 and the D pole of the MOS transistor Q1. A resistor R15 is connected between pin 3 of the terminal block J2 and the D pole of the MOS transistor Q2.
3. The intelligent device based on wired communication and signal acquisition according to claim 2, characterized in that: The signal input interface includes a multi-channel signal input circuit, which includes a MOS transistor Q60. The G pole of the MOS transistor Q60 is connected to resistors R85 and R76 respectively, and the D pole of the MOS transistor Q60 is connected to a resistor R71 connected to the working voltage. The D pole of the MOS transistor Q60 is connected to pin 20 of the processor chip U3.
4. The intelligent device based on wired communication and signal acquisition according to claim 2, characterized in that: The signal output interface includes a multi-channel signal output circuit, which includes a MOS transistor Q86 and a MOS transistor Q90. The G terminal of the MOS transistor Q86 and the D terminal of the MOS transistor Q90 are connected to a resistor R125. The D terminal of the MOS transistor Q86 is connected to a resistor R121. One end of the resistor R121 is connected to the input terminal of the power supply. The G terminal of the MOS transistor Q90 is connected to a resistor R132. The G terminal of the MOS transistor Q90 is connected to pin 36 of the processor chip U3.
5. The intelligent device based on wired communication and signal acquisition according to claim 2, characterized in that: The RS232 interface includes an RS232 communication interface circuit, which includes a communication chip U21 and a terminal block J21. A capacitor C21 is connected between pins 1 and 3 of the communication chip U21, a capacitor C25 is connected between pins 4 and 5 of the communication chip U21, a capacitor C24 is connected to pin 2 of the communication chip U21, a capacitor C26 is connected to pin 6 of the communication chip U21, a resistor R22 and an inductor B22 are connected in series to pin 7 of the communication chip U21, and a resistor R23 and an inductor B23 are connected in series to pin 8 of the communication chip U21; Pin 9 of the communication chip U21 is connected to pin 43 of the processor chip U3, pin 10 of the communication chip U21 is connected to pin 42 of the processor chip U3, one end of the inductor B23 is connected to pin 2 of the terminal block J21, and one end of the inductor B22 is connected to pin 3 of the terminal block J21.
6. The intelligent device based on wired communication and signal acquisition according to claim 2, characterized in that: The CAN interface includes a CAN bus circuit, which includes a chip U20 and a transformer B3. Pin 1 of the chip U20 is connected to pin 62 of the processor chip U3, pin 4 of the chip U20 is connected to pin 61 of the processor chip U3, pin 7 of the chip U20 is connected to pin 1 of the transformer B3, and pin 6 of the chip U20 is connected to pin 3 of the transformer B3; capacitors C27 and C28, and an electrostatic diode D20 are connected in parallel between pins 2 and 4 of the transformer B3.
7. The intelligent device based on wired communication and signal acquisition according to claim 2, characterized in that: The RS485 interface includes an RS485 communication interface circuit, which includes a chip U23 and a transformer B1. Pin 1 of the chip U23 is connected to pin 52 of the processor chip U3, pins 2 and 3 of the chip U23 are connected to pin 50 of the processor chip U3, and pin 1 of the chip U23 is connected to pin 51 of the processor chip U3. A resistor R29 is connected between the connection terminal between pin 7 of the chip U23 and pin 1 of the transformer B1 and between pin 6 of the chip U23 and pin 3 of the transformer B1. A suppression diode D24 is connected between pins 2 and 3 of the transformer B1.
8. The intelligent device based on wired communication and signal acquisition according to claim 2, characterized in that: The synchronous buck regulator includes a voltage stabilizing circuit, which includes a voltage stabilizing chip U1. A capacitor C1 is connected between pins 1 and 6 of the voltage stabilizing chip U1, a resistor R4 is connected between pins 4 and 5 of the voltage stabilizing chip U1, and a capacitor C3 and a capacitor C7 arranged in parallel are further connected to pin 5 of the voltage stabilizing chip U1. An inductor L1 and a resistor R3 are connected between pins 3 and 6 of the voltage stabilizing chip U1, and the connection terminals of the inductor L1 and the resistor R3 are connected to capacitors C4 and C5 arranged in parallel, and a diode D1 that outputs a 5V voltage.
Citation Information
Patent Citations
Cloud-side collaborative logistics equipment control method and system
CN114254976A