RFID-based chemical intelligent management and control system and method

Abstract

The invention discloses a chemical intelligent management and control system and method based on RFID, the intelligent management and control system comprises an intelligent transfer device and a server management system, and the server management system is in communication connection with the intelligent transfer device; the intelligent transfer device comprises a transfer structure, an operation screen and a main control panel, and an electric control lock is fixed outside the storage space; the main control board comprises a control module, a power supply module, an RFID identification module used for identifying RFID tags on chemicals to obtain chemical information, a positioning module, an identity identification module used for receiving and verifying user identity information, an electric control lock driving module, a sensor module and a serial port communication module. The RFID identification module is adopted to identify articles placed in the transfer device, taking and placing of the articles can be recorded, the articles are effectively prevented from being lost, the positioning technology of the positioning module is adopted, it is guaranteed that the track of the transfer process can be accurately positioned indoors and outdoors, and the transfer process is effectively supervised.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laboratory management, in particular to an intelligent management and control system and method based on RFID tag automatic identification. BACKGROUND

[0002] In the management process of dangerous chemicals in the laboratory, there is generally a whole warehouse in the whole research institute or university for storing large quantities of purchased dangerous chemicals, which is managed by a special asset management department. When a project team or an institute needs to use dangerous chemicals, the user submits an application for approval to the warehouse, and after the approval, the user goes to the warehouse to take the dangerous chemicals, which are delivered by the management personnel to the user. The user transfers the dangerous chemicals to the laboratory by reagent baskets or ordinary transfer trolleys and puts them into the reagent cabinet in the laboratory. The existing dangerous chemical management method has the following shortcomings:

[0003] 1) The whole transfer process lacks supervision, and the transfer by reagent baskets or flat trolleys is prone to risk of illegal interception, repacking or loss of dangerous chemicals, and the safety cannot be guaranteed. In addition, if chemical leakage occurs during the transfer process, it is difficult to discover and dispose in time, which may cause serious safety accidents;

[0004] 2) The process of taking chemicals from the warehouse to the laboratory reagent cabinet mainly adopts paper document recording, manual carrying and handover, and the flow information is not updated in time. The management personnel cannot master the in-transit state and exact position of the chemicals in real time, and there is a supervision blind area;

[0005] 3) The whole process relies on manual operation, which is low in efficiency and prone to errors.

[0006] In the prior art, some manufacturers have developed some intelligent cabinets for managing articles, but they are usually single-function, either solving only the static storage management of the warehouse or the laboratory, or providing only simple track tracking, and cannot realize the closed-loop intelligent management and control of the whole process of chemical delivery from the warehouse to the laboratory. SUMMARY

[0007] In order to solve the problems in the background art, the purpose of the present application is to provide an intelligent management and control system and method which adopts RFID automatic identification technology, identifies the articles put into the transfer device, records the taking and placing of the articles, effectively prevents the loss of articles, adopts positioning technology of a positioning module, ensures that the indoor and outdoor can accurately position the track of the transfer process, effectively supervises the transfer process, prevents illegal opening of the door of the device during the transfer process, realizes closed-loop management of the chemical transfer process by combining RFID radio frequency identification technology and real-time positioning, and improves the safety of chemical management.

[0008] In order to achieve the above purpose, the technical solution adopted by the present application is:

[0009] The application provides an RFID-based intelligent chemical management and control system, which comprises an intelligent transfer device and a server management system, wherein the server management system is in communication connection with one or more intelligent transfer devices; the intelligent transfer device comprises a transfer structure, an operation screen and a main control panel, the operation screen is fixed to the transfer structure, and the main control panel is fixed to the inside of the transfer structure, and the operation screen is in electrical connection with the main control panel.

[0010] The inside of the transfer structure is provided with a storage space for accommodating chemicals, and the outside of the storage space is fixed with an electric control lock for locking or opening the storage space; the main control panel comprises a control module, a power module, an RFID identification module for identifying an RFID tag on a chemical to obtain chemical information, a positioning module for obtaining real-time position information of the intelligent transfer device, an identity identification module for receiving and verifying user identity information, an electric control lock driving module, a sensor module and a serial communication module, the control module is in electrical connection with the power module, the RFID identification module, the positioning module, the identity identification module, the electric control lock driving module, the sensor module and the serial communication module, and the control module is in communication connection between the serial communication module and the server management system, so as to ensure accurate and timely information interaction.

[0011] Further, the control module comprises a main control chip U2, a clock circuit and a reset circuit, the main control chip U2 is of the model STM32F103RCT6, the 5th pin and the 6th pin of the main control chip U2 are in electrical connection with the clock circuit, and the 7th pin of the main control chip U2 is in electrical connection with the reset circuit.

[0012] Further, the RFID identification module comprises an RFID identification interface P7 and an RFID output interface P8, the 3rd pin and the 2nd pin of the RFID identification interface P7 are respectively connected with an RFRX serial communication line and an RFTX serial communication line, the 3rd pin and the 2nd pin of the RFID identification interface P7 are in electrical connection with the serial communication module, and the RFID identification interface P7 is in electrical connection with the main control chip U2 of the control module through the serial communication module; the identity identification module comprises an IC interface P9 and an IC interface P10, the 3rd pin and the 2nd pin of the IC interface P9 are respectively connected with an ICRX serial communication line and an ICTX serial communication line, the 3rd pin and the 2nd pin of the IC interface P9 are in electrical connection with the serial communication module, the IC interface P9 is in electrical connection with the main control chip U2 of the control module through the serial communication module, and the IC interface P10 is used for accessing the operation screen.

[0013] Further, the positioning module comprises a positioning module connecting seat P3, a 5th pin of the positioning module connecting seat P3 is electrically connected with a 53rd pin of the main control chip U2, and a 4th pin of the positioning module connecting seat P3 is electrically connected with a 54th pin of the main control chip U2, wherein the positioning module connecting seat P3 is used as an interface connecting seat of a GNSS positioning module, a Bluetooth module and a 4g positioning module.

[0014] Further, the electric control lock driving module comprises a door state detection unit for detecting the on-off state of the door and outputting a detection signal and an electric control lock control unit for controlling the on-off of the electric control lock according to the control signal, the door state detection unit is electrically connected with the electric control lock control unit, and the door state detection unit and the electric control lock control unit are electrically connected with the main control chip U2 of the control module.

[0015] Further, the door state detection unit comprises a door lock interface seat P11, resistors R19, R20 and R22, voltage division resistors R25 and R26, a 3rd pin, a 2nd pin and a 1st pin of the door lock interface seat P11 are electrically connected with the resistors R19, R20 and R22 respectively, and the 2nd pin and the 1st pin of the door lock interface seat P11 are also electrically connected with a 33rd pin and a 35th pin of the main control chip U2 respectively; the electric control lock control unit comprises a control signal input end PB13, a transistor amplification circuit and a MOS tube switching circuit, the transistor amplification circuit is electrically connected with a 34th pin of the main control chip U2 through the control signal input end PB13, the transistor amplification circuit is connected with the MOS tube switching circuit, and the on-off control of the electric control lock is realized by amplifying the control signal through the transistor amplification circuit to drive the MOS tube switching circuit.

[0016] Further, the sensor module comprises a TVOC and temperature and humidity interface seat P12, resistors R21, R23, R24 and R27, one end of the resistors R23 and R21 is electrically connected with a 4th pin and a 5th pin of the TVOC and temperature and humidity interface seat P12 respectively, the other end of the resistors R23 and R21 is electrically connected with a 16th pin and a 17th pin of the main control chip U2 respectively, one end of the resistors R27 and R24 is electrically connected with a 2nd pin and a 3rd pin of the TVOC and temperature and humidity interface seat P12 respectively, the other end of the resistors R27 and R24 is electrically connected with a 29th pin and a 30th pin of the main control chip U2 respectively, and the TVOC and temperature and humidity interface seat P12 is electrically connected with the 16th pin, the 17th pin, the 29th pin and the 30th pin of the main control chip U2 through the resistors R23, R21, R27 and R24.

[0017] The application also provides an intelligent management and control method of chemicals based on RFID, which comprises the following processes:

[0018] Step S1) In the warehouse delivery link, in response to the chemicals being put into the storage space of the intelligent transfer device, the RFID identification module of the intelligent transfer device automatically identifies the RFID tag on the chemicals, generates a transfer list, and uploads the transfer list to the server management system;

[0019] Step S2) The server management system sends a target reagent cabinet allocation instruction to the intelligent transfer device according to the pre-stored laboratory allocation information; the intelligent transfer device receives the target reagent cabinet allocation instruction, controls the electric control lock to be closed after obtaining user confirmation through the operation screen, and reports the transfer list and target reagent cabinet information to the server management system;

[0020] Step S3) In the transfer link, the positioning module of the intelligent transfer device acquires position information in real time and reports it to the server management system to generate a transfer trajectory; during this period, the electric control lock is maintained in a closed state, and the electric control lock is prohibited from being opened through the identity identification module;

[0021] Step S4) In the reagent cabinet storage link, when the server management system confirms that the intelligent transfer device has arrived at the location of the target reagent cabinet based on the position information, it sends an authorization signal to the intelligent transfer device to authorize the electric control lock to be opened; in response to the identity information input by the identity identification module at the target reagent cabinet being verified successfully, the electric control lock is controlled to be opened; when the chemicals are taken out, the RFID identification module automatically identifies the taken-out chemicals, generates a transfer-out list and reports it to the server management system;

[0022] Step S5) The server management system compares the transfer-out list with the pre-stored transfer-in list, wherein the transfer-in list is an expected storage chemical list generated by the server management system in the delivery link according to the transfer list; if the comparison is consistent, the transfer is completed, and if the comparison is inconsistent, an alarm information is generated.

[0023] Further, in step S4), the "authorization of the electric control lock to be opened" specifically includes: the control unit of the intelligent transfer device controls the electric control lock to switch from the closed state to the openable state according to the matching result of the current position information and the target reagent cabinet position, and in the openable state, the electric control lock is only opened after the information input by the identity identification module is verified.

[0024] Further, in step S2), the "receiving a target reagent cabinet allocation instruction" specifically includes:

[0025] The server management system automatically recommends a corresponding reagent cabinet as the target reagent cabinet according to the laboratory to which the user belongs;

[0026] Receiving an adjustment or confirmation operation of the recommended target reagent cabinet by an administrator, to form a final target reagent cabinet allocation instruction.

[0027] The present application has the advantages of:

[0028] 1)、The intelligent management and control system comprises an intelligent transfer device and a server management system, the server management system is in communication connection with one or more intelligent transfer devices; the intelligent transfer device comprises a transfer structure, an operation screen and a main control panel, an electric control lock for locking or opening the storage space is fixed outside the storage space, the main control panel comprises a control module, a power module, an RFID identification module for identifying an RFID tag on a chemical to obtain chemical information, a positioning module for obtaining real-time position information of the intelligent transfer device, an identity recognition module for receiving and verifying user identity information, an electric control lock driving module, a sensor module and a serial communication module; the RFID identification module is adopted to identify the articles placed in the transfer device, the taking and placing of the articles can form records, the articles are effectively prevented from being lost, the positioning technology of the positioning module is adopted to ensure that the track of the transfer process can be accurately positioned indoors and outdoors, the transfer process is effectively supervised, illegal opening in the transfer process is prevented, the combination of the RFID radio frequency identification technology and the positioning module realizes closed-loop management of the chemical transfer process and improves the safety of chemical management.

[0029] 2)、The intelligent management and control method realizes closed-loop management of chemicals in the whole process of "warehouse out, transfer and warehouse in", effectively prevents the loss and misuse of chemicals in the transfer process through identity authentication and permission control, can discover and dispose safety hazards such as leakage in time in combination with the sensor module, effectively prevents the risk of chemical leakage; the RFID technology is used to automatically identify articles, avoids errors and inefficiency of manual counting, and in combination with the positioning module, provides reliable basis for post-audit and problem tracing. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a communication schematic diagram of the intelligent transfer device and the server management system in the intelligent management and control system of the present application;

[0031] Figure 2 It is a schematic diagram of the transfer structure preferably in the form of a cart in the intelligent management and control system of the present application;

[0032] Figure 3 It is a circuit schematic diagram of the control module of the present application;

[0033] Figure 4 It is a circuit schematic diagram of the power module of the present application;

[0034] Figure 5The circuit diagrams for the RFID identification module, identity recognition module, and electric lock drive module of this invention are shown below.

[0035] Figure 6 This is a circuit diagram of the positioning module, sensor module, and serial communication module of the present invention.

[0036] In the figure, there is an intelligent transfer device 1, a transfer structure 11, an operation screen 12, a storage space 13, and an electric lock 14. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, this invention provides an RFID-based intelligent chemical management system. This system includes an intelligent transfer device 1 and a server-side management system. The server-side management system is communicatively connected to one or more intelligent transfer devices 1. Specifically, the server-side management system can communicate with one or more intelligent transfer devices 1 via wired or wireless networks (preferably 4G / 5G or Wi-Fi). The server-side management system is deployed on a server and includes a database, a business logic processing unit, and a web management interface, responsible for data storage, analysis, decision-making, and instruction issuance. The intelligent transfer device 1 includes a transfer structure 11, an operation screen 12, and a main control board. The operation screen 12 is fixed to the transfer structure 11, and the main control board is fixed inside the transfer structure 11. The operation screen 12 is electrically connected to the main control board. Inside the transfer structure 11, a storage space 13 for accommodating chemicals is provided. An electrically controlled lock 14 for locking or unlocking the storage space 13 is fixed outside the storage space 13. The transfer structure 11 can be either a trolley-type structure or a suitcase-type structure. In this embodiment, the transfer structure 11 is preferably a trolley-type structure, which is convenient for transporting large or heavy quantities of chemicals. The transfer structure 11 is made of explosion-proof and corrosion-resistant materials. The operation screen 12 of this invention is a touch screen, used to display the item list, destination, alarm information, sensor readings, etc., and users can also use it to perform operations such as unlocking requests.

[0039] The main control board comprises a control module, a power module, an RFID identification module for identifying an RFID tag on a chemical to obtain chemical information, a positioning module for obtaining real-time position information of the intelligent transfer device 1, an identity identification module for receiving and verifying user identity information, an electric lock driving module, a sensor module, and a serial communication module. The control module is electrically connected with the power module, the RFID identification module, the positioning module, the identity identification module, the electric lock driving module, the sensor module, and the serial communication module. The control module is in communication connection between the serial communication module and the server management system, so as to ensure accurate and timely interaction of information. The server management system is used for receiving and processing the chemical information, the position information and the identity information reported from the intelligent transfer device 1, performing list comparison, position verification, permission control and alarm logic. The operation screen 12 is electrically connected with the control module of the main control board, and is used for information display and interaction.

[0040] The operation screen 12 is arranged as a control entrance of the transfer structure 11, and a user can view detailed information of a transfer article and a reagent cabinet position to be transferred in on the operation screen 12, so as to conveniently understand a transfer task. Alarm information can also be viewed, so that abnormal conditions of the device can be grasped in time, and sensor data in the device, such as temperature and humidity, gas concentration and the like, can be viewed, so as to monitor a storage environment in real time. In addition, an electronic lock can be applied to be opened through the operation screen 12, and the operation is convenient. The main control board of the present application is provided with an RFID identification module, which can identify RFID tag information on a chemical placed into the intelligent transfer device 1, so as to quickly and accurately obtain a transfer article list in the intelligent transfer device 1, realize automatic identification and inventory of the chemical, and set an identity identification module to perform identity authentication on a person applying to open the lock. Only the person passing the identity authentication can open the electronic lock, so as to ensure safety of the chemical in the transfer process and prevent illegal use. The electric lock 14 is an electronic lock that can be controlled by a main control board circuit, and is used to lock the storage space 13, so as to prevent loss of articles in the transfer process. The electric lock 14 also has a mechanical emergency unlocking function. When a circuit fails or a chemical is harmful, the storage space 13 can be opened in time through a mechanical mode to take out the chemical, so as to ensure safety of personnel and avoid greater loss. The positioning module can realize accurate positioning in outdoor and indoor environments, and report positioning information to the server management system in real time to generate a transfer track, so that a management personnel can grasp the position and the transfer route of the intelligent transfer device 1 in real time. The control module controls operation of each module, processes chemical information, position information and identity information, and communicates with the server management system. The server management system is mainly responsible for receiving and processing various information reported from the intelligent transfer device 1, such as an article list, positioning information, alarm information and the like, and monitoring and managing the entire transfer process, so as to realize comprehensive control of chemical circulation.

[0041] The intelligent management and control system of the application automatically identifies chemicals through an RFID identification module, realizes automatic generation and rapid inventory of an item list, and greatly reduces the time and error rate of manual operation. At the same time, real-time positioning and transfer trajectory generation are realized through the positioning module, so that the manager can master the position and transfer progress of the chemicals in real time, and the work can be reasonably arranged. The server management system monitors and manages the entire process, realizes centralized processing and rapid response of information, and improves the management efficiency. The RFID identification technology of the application can accurately complete the inventory in a short time, improve the work efficiency, and the system automatically recommends and allocates, thereby improving the management efficiency.

[0042] The application further provides a liquid leakage groove at the bottom of the storage space 13, which can prevent the accident from further expanding when an unexpected collision or chemical leakage occurs.

[0043] The electric control lock 14 further comprises a mechanical emergency unlocking mechanism, which can ensure that the chemicals are taken out in time when the circuit fails, and the risk of intensifying the danger is avoided. The electric control lock 14 of the application is controlled by the control module of the main control board, and is normally controlled by the electronic control, while the mechanical key emergency unlocking function is reserved, and the unlocking permission is strictly limited during the transfer process. These measures effectively reduce the risk of safety accidents such as leakage and explosion of chemicals during the transfer and storage process, and ensure the safety of personnel and the environment.

[0044] As shown in FIG. Figures 2-5 In the embodiment of the application, the control module comprises a main control chip U2, a clock circuit and a reset circuit, the main control chip U2 is of the type STM32F103RCT6, the 5th pin and the 6th pin of the main control chip U2 are electrically connected with the clock circuit, and the 7th pin of the main control chip U2 is electrically connected with the reset circuit. The main control chip U2 selects the STM32F103RCT6 chip, the working frequency of the chip is 72MHz, it has a flash memory of 256KB and a SRAM of 48KB, and can meet the demand of multi-data processing.

[0045] In the embodiment of the application, the reset circuit comprises a resistor R12, a reset button K1 and a capacitor C20, one end of the resistor R12, the reset button K1 and one end of the capacitor C20 are electrically connected with the 7th pin of the main control chip U2. The reset circuit can realize automatic reset through charging and discharging of the resistor R12 and the capacitor C20 when power is turned on, and can forcibly reset the main control chip U2 by pressing the reset button K1.

[0046] In a specific implementation, the power module of the application comprises a power input circuit, a voltage reduction circuit and a power stabilizing circuit. The power input circuit comprises an Android power interface P6 and a power interface P5, both of which adopt an XH2.54mm interface type and can output an ST12V voltage. The power stabilizing circuit comprises a linear voltage stabilizing chip U3, filter capacitors C12, C13 and C14. The linear voltage stabilizing chip U3 is of a GM1117-3.3 type. The filter capacitor C12 is connected in parallel between the 3rd pin and the 1st pin of the linear voltage stabilizing chip U3. The filter capacitors C13 and C14 are connected in parallel between the 2nd pin and the 1st pin of the linear voltage stabilizing chip U3. The 3rd pin of the linear voltage stabilizing chip U3 is connected to a 5V input interface, the 1st pin is grounded, and the 2nd pin outputs a 3.3V voltage (STMV33). The voltage reduction circuit comprises a DC-DC conversion chip U4, an energy storage inductor L3, a freewheeling diode D1, capacitors EC1, C18, EC2 and C19, and a resistor R14. The DC-DC conversion chip U4 is of an XL1509-5.0E type. The 1st pin of the DC-DC conversion chip U4 is connected to a 12V input interface, the 5th-8th pins are grounded, the 2nd pin outputs a 5V voltage, and the energy storage inductor L3 is connected in series between the 12V input interface and the 1st pin of the DC-DC conversion chip U4. The anode of the freewheeling diode D1 is grounded, and the cathode thereof is connected between the energy storage inductor L3 and the 1st pin of the DC-DC conversion chip U4. The capacitors EC1 and C18 are connected in parallel between the 12V input interface and the ground. The capacitors EC2 and C19 are connected between the 1st pin of the DC-DC conversion chip U4 and the ground. The resistor R14 is connected to the 4th pin of the DC-DC conversion chip U4 (for enabling or feedback adjustment).

[0047] The RFID identification module of the application comprises an RFID identification interface P7 and an RFID output interface P8. The 3rd pin and the 2nd pin of the RFID identification interface P7 are respectively connected with an RFRX serial communication line and an RFTX serial communication line, and are electrically connected with a serial communication module. The RFID identification interface P7 is electrically connected with a main control chip U2 of a control module through the serial communication module. The RFID output interface P8 is an output end and is connected with an operation screen 12 to realize communication between the operation screen 12 and the RFID identification module. In a specific implementation, the RFID identification interface P7 adopts an XH2.54mm interface type and is used to read the identity information of an external RFID tag and transmit the information to the control module for verification. The 4th pin of the RFID identification interface P7 is supplied with a 12V voltage. The RFID output interface P8 adopts a PH2.0mm interface type and is an output end.

[0048] The RFID identification module of the present application is powered by a 12V power supply and is electrically connected to the control module through the RFID identification interface P7 for transmitting identification data and control signals; the RFID output interface P8 is used to connect with the operation screen 12 to realize data communication. In actual application, the RFID tag is bound with chemicals. When the RFID identification module reads the tag information, the data is sent to the operation screen 12 through the RFID output interface P8. The application program of the operation screen 12 parses the data and displays the chemical information, including the person who takes, the taking time, etc. In the embodiment, the RFID identification interface P7 and the RFID output interface P8 can adopt a standardized communication protocol (such as UART or RS485) to ensure compatibility and stability. The present application has simple structure and is easy to implement, and is suitable for chemical management in laboratories, warehouses and other scenes.

[0049] The identity recognition module includes IC interface P9 and IC interface P10, the 3rd pin and the 2nd pin of the IC interface P9 are respectively connected with IC RX serial communication line and ICTX serial communication line, the 3rd pin (i.e. serial communication receiving pin) and the 2nd pin (i.e. serial communication sending pin) of the IC interface P9 are electrically connected with the serial communication module, the IC interface P9 is electrically connected with the main control chip U2 of the control module through the serial communication module, and the IC interface P10 is used to connect with the operation screen 12. So as to realize the communication between the operation screen 12 and the identity recognition module. In the embodiment of the present application, the IC interface P9 is a PH1.75mm interface with 4 pins, the 1st pin of the IC interface P9 is connected with GND, and the IC interface P10 is a PH2.0mm interface with 4 pins, the 1st pin of the IC interface P10 is connected with the ground end GND.

[0050] In the embodiment of the present application, the identity recognition module works at 13.56 MHz high frequency communication protocol, the identity recognition module is electrically connected with the serial port communication module through IC interface P9, and the identity recognition module is electrically connected with the master control chip U2 through the serial port communication module; wherein the identity recognition module is connected to the master control chip U2 through IC interface P9. IC interface P9 includes IC RX serial port communication line, ICTX serial port communication line, 5V power supply connection, ground terminal GND pin for serial communication, therefore, the master control chip U2 realizes power supply and basic communication of the identity recognition module through IC interface P9, the master control chip U2 is connected with the operation screen 12 through the 2nd pin of IC interface P10, IC interface P10 is a UART interface, including ICTX serial port communication line (transmission line) and ICRX serial port communication line (receiving line). The master control chip U2 forwards the identity recognition data (such as card number) received from the identity recognition module to the operation screen 12 through IC interface P10, and the application program on the operation screen 12 can process these data to realize functions such as identity verification, information retrieval, etc. In work, the user approaches the IC card to the identity recognition module, the identity recognition module activates the IC card and reads data, and transmits the data to the mainboard through IC interface P10. After the mainboard preliminarily processes the data, the data is sent to the operation screen 12 through IC interface P10.

[0051] The identity recognition module of the present application is an IC card recognition module, which communicates with the operation screen 12, and the identity recognition module realizes data communication and energy transmission between the identity recognition module and the IC card through electromagnetic coupling or contact. The identity recognition module includes non-contact IC card recognition module and contact IC card recognition module, wherein the non-contact IC card recognition module generates an alternating magnetic field through a coil to supply power for the IC card without power supply; the contact IC card recognition module directly supplies power through metal contacts; both sides transmit data through agreed communication protocol (such as ISO 14443, ISO 7816) with electric signal or magnetic field change as carrier; the identity recognition module receives the identity information and encrypted data returned by the IC card, decodes and verifies, and outputs the recognition result.

[0052] The positioning module of the application comprises a positioning module connecting seat P3, the 5th pin of the positioning module connecting seat P3 is electrically connected with the 53rd pin of the main control chip U2, and the 4th pin of the positioning module connecting seat P3 is electrically connected with the 54th pin of the main control chip U2, wherein the positioning module connecting seat P3 is used as the interface connecting seat of the GNSS positioning module, the Bluetooth module and the 4g positioning module. In specific implementation, the positioning module connecting seat P3 adopts the XH2.54mm interface type, the positioning module connecting seat P3 is used as the interface connecting seat of the GNSS positioning module, the Bluetooth module and the 4g positioning module, a three-in-one interface module is adopted, the GNSS positioning module, the Bluetooth module and the 4g positioning module perform data interaction with the main control chip U2 of the control module through the positioning module connecting seat P3, real-time collection of position information is realized, and the positioning module connecting seat P3 is suitable for connection of various positioning modules. The main control chip U2 sends a signal to the positioning module, so that communication can be performed, positioning information can be quickly obtained, and positioning is faster.

[0053] The positioning module comprises a GNSS positioning module (such as GPS, Beidou) and a Bluetooth positioning module, so that accurate positioning can be realized both outdoors (through satellite ranging and multi-satellite solution) and indoors (based on RSSI or triangular positioning), and a continuous transfer trajectory can be generated, wherein:

[0054] The positioning process of the GNSS positioning module is as follows:

[0055] The GNSS satellite continuously sends radio signals containing time stamps and orbit information;

[0056] The receiver in the GNSS positioning module receives at least four satellite signals, and calculates the distance from each satellite through the time difference of signal propagation;

[0057] Combined with satellite precise orbit data, the longitude, latitude, altitude and time of the receiver are solved through a three-dimensional coordinate equation set.

[0058] The positioning process of the Bluetooth positioning module is as follows:

[0059] The Bluetooth beacon continuously broadcasts signals, and the receiving terminal in the positioning module receives the signals;

[0060] According to the strength RSSI of the received signals, the distance between the receiving terminal and the Bluetooth beacon is estimated combined with a signal attenuation model;

[0061] Through the distance data of multiple Bluetooth beacons, the specific position of the receiving terminal is determined by using a triangular positioning or fingerprint matching algorithm;

[0062] The positioning data is transmitted in real time to the main control chip U2 of the control module through the 5th pin and the 4th pin of the positioning module connecting seat P3.

[0063] The electric control lock driving module comprises a door state detection unit for detecting the opening and closing state of the door and outputting a detection signal and an electric control lock 14 control unit for controlling the electric control lock 14 on and off according to a control signal, the door state detection unit is electrically connected with the electric control lock 14 control unit, and the door state detection unit and the electric control lock 14 control unit are both electrically connected with a main control chip U2 of the control module. The door state detection unit comprises a door lock interface seat P11, resistors R19, R20 and R22, voltage division resistors R25 and R26, the 3rd pin, the 2nd pin and the 1st pin of the door lock interface seat P11 are electrically connected with the resistors R19, R20 and R22 respectively, and the 2nd pin and the 1st pin of the door lock interface seat P11 are also electrically connected with the 33rd pin and the 35th pin of the main control chip U2; in the embodiment, the resistance values of the voltage division resistors R25 and R26 are both 10KΩ, the voltage division resistors R25 and R26 are connected in series between a power supply (STM3V3) and a ground (GND) for voltage division processing of the door state detection signal, the 2nd pin and the 1st pin of the door lock interface seat P11 are respectively connected with a normally closed sensing end PB12 and a normally open sensing end PB14; the normally closed sensing end PB12 is conductive when the door is closed and non-conductive when the door is opened; and the normally open sensing end PB14 is non-conductive when the door is closed and conductive when the door is opened.

[0064] The control unit of the electric control lock 14 comprises a control signal input end PB13, a transistor amplification circuit and a MOS tube switching circuit. The transistor amplification circuit is electrically connected with the 34th pin of the main control chip U2 through the control signal input end PB13, and is connected with the MOS tube switching circuit. The control signal is amplified through the transistor amplification circuit to drive the MOS tube switching circuit to realize the on-off control of the electric control lock 14. In the embodiment of the application, the transistor amplification circuit comprises a transistor Q2, a current limiting resistor R29 and a pull-down resistor R30. The base of the transistor Q2 is connected with the control signal input end PB13 through the current limiting resistor R29, and the base of the transistor Q2 is grounded through the pull-down resistor R30. The 13th pin of the main control chip U2 is electrically connected with the base of the transistor Q2 through the resistor R29 of the transistor amplification circuit, and the collector of the transistor Q2 is electrically connected with the control end of the MOS tube switching circuit. The MOS tube switching circuit comprises a MOS tube Q1, a pull-up resistor R28 and a resistor R31. The model of the MOS tube Q1 is AOD413A. The gate of the MOS tube Q1 is electrically connected with the pull-up resistor R28, and the gate of the MOS tube Q1 is also electrically connected with the collector of the transistor Q2. The drain of the MOS tube Q1 is connected with the CTRL_LOCK interface end of the electric control lock 14, and the source of the MOS tube Q1 is connected with the power supply ST12V through the resistor R31. The resistor R31 is used for current sampling or current limiting, and the pull-up resistor R28 ensures the reliability of the MOS tube Q1 in the off state. When the main control chip U2 sends a lock opening or lock closing instruction, the main control chip U2 outputs a corresponding control signal to the signal input end PB13 through the 13th pin thereof. The signal accepted by the signal input end PB13 drives the MOS tube Q1 to be turned on after being amplified by the transistor Q2, and then the action of the electric control lock 14 is controlled. In addition, the door state detection unit adopts an inductive element of NC / NO selection type. The signal output end thereof is electrically connected with the main control chip U2, is used for detecting the on-off state of the electric control lock 14, and feeds back the state information to the main control chip U2.

[0065] The door state detection process is as follows:

[0066] When the door is closed: the normally closed contact (normally closed inductive end PB12) is turned on, and the corresponding door lock interface seat P11 pin is at low level; the normally open contact (normally open inductive end PB14) is not turned on, and the corresponding door lock interface seat P11 pin is provided with high level (STM3V3 voltage division) by the voltage division resistor R23 and the voltage division resistor R26.

[0067] When the door is opened: the normally closed contact (normally closed inductive end PB12) is not turned on, and the pin is at high level; the normally open contact (normally open inductive end PB14) is turned on, and the pin is at low level. The main control chip U2 can judge the on-off state of the door by detecting the levels of the normally closed inductive end PB12 and the normally open inductive end PB14.

[0068] The control process of the electric control lock 14 is as follows:

[0069] When the control signal input end PB13 inputs high level: the transistor Q2 is turned on, the gate of the MOS tube Q1 is pulled low, the MOS tube Q1 is turned on, the CTRL_LOCK end obtains the ST12V voltage, and the electric control lock 14 performs an action (such as unlocking);

[0070] When PB13 inputs low level: the transistor Q2 is cut off, the gate of the MOS tube Q1 is pulled up through the resistor R28, Q1 is cut off, the CTRL_LOCK interface end of the electric control lock 14 has no voltage, and the electric control lock 14 keeps the original state.

[0071] The circuit structure of the electric control lock driving module provided by the application is simple, the electric control lock driving module adopts the combination of a transistor amplification circuit and a MOS tube switching circuit, small signal amplification and large current switching control are realized, and the reliability is high; the door state detection unit can accurately distinguish the 'close / open' state of the door, and provides accurate feedback for the control of the electric control lock 14.

[0072] The sensor module of the application includes a TVOC and temperature and humidity interface seat P12, a resistor R21, a resistor R23, a resistor R24, and a resistor R27, one end of the resistor R23 and the resistor R21 is electrically connected with the fourth pin and the fifth pin of the TVOC and temperature and humidity interface seat P12 respectively, the other end of the resistor R23 and the resistor R21 is electrically connected with the sixteenth pin and the seventeenth pin of the main control chip U2 respectively, one end of the resistor R27 and the resistor R24 is electrically connected with the second pin and the third pin of the TVOC and temperature and humidity interface seat P12 respectively, the other end of the resistor R27 and the resistor R24 is electrically connected with the twenty-ninth pin and the thirtieth pin of the main control chip U2 respectively, and the TVOC and temperature and humidity interface seat P12 is electrically connected with the sixteenth pin, the seventeenth pin, the twenty-ninth pin and the thirtieth pin of the main control chip U2 through the resistor R23, the resistor R21, the resistor R27 and the resistor R24. In the embodiment of the application, the TVOC and temperature and humidity interface seat P12 is used for connecting a temperature and humidity sensor and a gas sensor module, the TVOC and temperature and humidity interface seat P12 is electrically connected with the sixteenth pin, the seventeenth pin, the twenty-ninth pin and the thirtieth pin of the main control chip U2 through the resistor R23, the resistor R21, the resistor R24 and the resistor R27, and TTL level communication is realized; the TVOC and temperature and humidity acquisition module communicates data with the main control chip U2 through the TVOC and temperature and humidity interface seat P12, and TVOC and temperature and humidity data acquisition in a chemical storage environment is realized.

[0073] The serial communication module of the application comprises a level conversion chip U1, an Android interface seat P2, a resistor R3 and a resistor R4. The level conversion chip U1 adopts an RS-232 level conversion chip MAX3232, which can realize bidirectional conversion between TTL level and RS-232 level. The 10th pin and the 9th pin of the level conversion chip U1 are connected with the 42nd pin and the 43rd pin of the main control chip U2 respectively. The 3rd pin and the 2nd pin of the Android interface seat P2 are used to establish a serial communication connection with external equipment (such as a computer, etc.). Through the serial communication module, the control module can upload the identity recognition result, the positioning data, the state of the electric control lock 14 and other information to the external equipment, and at the same time, receive the control instructions issued by the external equipment, so as to realize the remote communication and control function.

[0074] In another aspect, the application also provides an intelligent management and control method based on RFID, which is applied to an intelligent management and control system. The intelligent management and control method comprises the following processes:

[0075] Step S1) In the warehouse delivery link, in response to the chemical being put into the storage space 13 of the intelligent transfer device 1, the RFID identification module of the intelligent transfer device 1 automatically identifies the RFID tag on the chemical, generates a transfer list, and uploads the transfer list to the server management system;

[0076] Step S2) The server management system sends a target reagent cabinet allocation instruction to the intelligent transfer device 1 according to the pre-stored laboratory allocation information. The intelligent transfer device 1 receives the target reagent cabinet allocation instruction, controls the electric control lock 14 of the intelligent transfer device 1 to be locked after obtaining user confirmation through the operation screen 12, and reports the transfer list and the target reagent cabinet information to the server management system;

[0077] Step S3) In the transfer link, the positioning module of the intelligent transfer device 1 obtains real-time position information and reports it to the server management system to generate a transfer track. During this period, the electric control lock 14 is maintained in a locked state, and the electric control lock 14 is prohibited from being opened through the identity recognition module;

[0078] Step S4) In the reagent cabinet storage link, when the server management system confirms that the intelligent transfer device 1 reaches the position of the target reagent cabinet based on the position information, an authorization signal is sent to the intelligent transfer device 1 to authorize the electric control lock 14 to be opened. In response to the successful verification of the identity information input by the identity recognition module at the target reagent cabinet, the electric control lock 14 is controlled to be opened. When the chemical is taken out, the RFID identification module automatically identifies the taken-out chemical, generates a transfer-out list and reports it to the server management system;

[0079] Step S5) The service management system compares the transfer-out list with a pre-stored transfer-in list, wherein the transfer-in list is an expected storage-in chemical list generated by the service management system according to the transfer list at the warehouse-out link; if the comparison is consistent, the transfer is completed; if the comparison is inconsistent, an alarm information is generated.

[0080] The intelligent management method of the present application realizes the whole-process closed-loop management from "warehouse-out, transfer, warehouse-in", effectively prevents the risk of chemical loss and misuse in the transfer process through identity authentication and permission control, can timely discover and handle safety hazards such as leakage in combination with the sensor module, effectively prevents the risk of chemical leakage; automatically identifies the goods by using RFID technology, avoids the errors and inefficiency of manual counting, can obtain complete transfer trajectory and operation records in combination with the positioning module, realizes the precise tracking and safe management of chemical circulation, and provides a reliable basis for post-audit and problem tracing.

[0081] The "authorized electric control lock 14 can be opened" in step S4) specifically includes: the control unit of the intelligent transfer device 1 controls the electric control lock 14 to switch from the locked state to the openable state according to the matching result of the current position information and the target reagent cabinet position, and in the openable state, the electric control lock 14 is opened only when the information input by the identity recognition module is verified.

[0082] The present application monitors environmental data through the sensor module in the intelligent transfer device 1, wherein the environmental data includes temperature and humidity data and harmful gas concentration data related to the transferred chemicals; during the transfer process, if the monitored environmental data exceeds the preset safety threshold, the electric control lock 14 will immediately enter the openable state regardless of the current position information, and generate an emergency alarm information and report to the service management system.

[0083] In specific implementation, the "receiving target reagent cabinet allocation instruction" in step S2) specifically includes:

[0084] The service management system automatically recommends a corresponding reagent cabinet as the target reagent cabinet according to the laboratory to which the user belongs;

[0085] Receiving the adjustment or confirmation operation of the administrator on the recommended target reagent cabinet to form the final target reagent cabinet allocation instruction.

[0086] Embodiment 1

[0087] The intelligent management system of the present application is applied to the chemical taking scene of a scientific research institution, and the whole process of taking chemicals from the warehouse, putting them into the intelligent transfer device 1, transferring to the laboratory and putting them into the reagent cabinet, the laboratory personnel of the scientific research institution need to take a batch of chemicals from the warehouse for experiments.

[0088] Step S1) After receiving the application, the warehouse manager will put the chemicals required by the laboratory personnel, such as various organic reagents, inorganic reagents, etc., into the storage space 13 of the intelligent transfer device 1 one by one, and the RFID identification module of the intelligent transfer device 1 quickly identifies the RFID tag information on these chemicals, generates a transfer list containing detailed information such as chemical name, specification, quantity, etc., and uploads the transfer list to the server management system;

[0089] Step S2) The server management system sends a target reagent cabinet allocation instruction to the intelligent transfer device 1 according to the pre-stored laboratory allocation information (i.e. the laboratory to which the laboratory personnel belongs), and automatically allocates these out-of-stock items to the reagent cabinet of the laboratory where they are located. The administrator checks the allocation result, and if he finds that the allocation position of individual chemicals is not very reasonable, he can adjust the allocation method recommended by the system on the operation screen 12, and obtain user confirmation through the operation screen 12. After the user confirms that it is correct, the electric control lock 14 of the intelligent transfer device 1 is automatically locked, and at the same time, the intelligent transfer device 1 reports the transfer list and the information of the reagent cabinet to be transferred to the server management system through the serial communication module. The server management system receives and stores these information, and prepares for subsequent transfer monitoring and management;

[0090] Step S3) The warehouse worker pushes the intelligent transfer device 1 out of the warehouse. In the transfer process, the positioning module inside the intelligent transfer device 1 reports the positioning information to the server management system in real time. The server management system displays the position of the intelligent transfer device 1 in the form of a map and generates a detailed transfer trajectory according to these information, which is accurate to the position change every minute. When an ordinary person tries to open the electronic lock, the identity authentication module identifies him. If he fails to pass the identity authentication, the electronic lock cannot be opened, which can effectively avoid the risk of loss of chemicals during the transfer process;

[0091] Step S4) When the intelligent transfer device 1 reaches the designated laboratory reagent cabinet, the server management system immediately verifies the position information of the intelligent transfer device 1, confirms the accurate arrival position, and sends an instruction to the intelligent transfer device 1 to allow the lock to be opened. The laboratory personnel perform identity authentication on the operation screen 12 of the intelligent transfer device 1, and the electronic lock is successfully opened after passing the double authentication of face recognition and fingerprint recognition. The laboratory personnel take out the chemicals that need to be transferred into the designated reagent cabinet, and the RFID identification module of the intelligent transfer device 1 automatically identifies the transferred-out items, and again quickly generates a transfer-out item list and reports it to the server management system;

[0092] Step S5) The server management system compares the transfer-out list of the intelligent transfer device 1 with the item list transferred into the reagent cabinet, completes the comparison work, and confirms that all the transferred-out items have been accurately transferred into the reagent cabinet, and completes the transfer process.

[0093] The intelligent management and control system and the intelligent management and control method are used in the whole chemical taking and transferring process, realize efficient and safe management of chemicals, and take chemicals from a warehouse to a reagent cabinet in a laboratory, which saves time and greatly improves work efficiency compared with traditional manual transfer and management mode, and ensures safe circulation of chemicals.

[0094] Embodiment 2

[0095] The intelligent management and control system is applied to chemical transfer in a production workshop of a chemical enterprise, the production workshop of the chemical enterprise needs to frequently transfer a large amount of chemicals for different production links, and a batch of corrosive chemical raw materials needs to be transferred from a warehouse to specified reagent cabinets of multiple production workshops in one production task.

[0096] Step S1) The warehouse manager carefully puts the chemical raw materials into the intelligent transfer device 1 in the form of a cart, the intelligent transfer device 1 can effectively ensure the safety of the transfer process by virtue of the mechanical structure with explosion-proof and corrosion-proof functions and the set liquid leakage groove, the intelligent transfer device 1 generates a transfer list through the RFID identification module and uploads the transfer list to the server management system;

[0097] Step S2) The server management system allocates the items to the reagent cabinets of the corresponding workshops according to the needs and positions of the production workshops, the administrator confirms and fine-tunes the allocation result, the intelligent transfer device 1 is locked and the information is reported to the server management system;

[0098] Step S3) During the transfer process, the positioning module reports the positioning information in real time and accurately, the server management system generates a detailed and accurate transfer track, and the server management system monitors the states of multiple intelligent transfer devices 1 in real time to ensure that all transfer tasks are carried out according to the plan;

[0099] Step S4) When the intelligent transfer device 1 reaches the specified reagent cabinet of each production workshop, the server management system strictly checks the position information, allows the electronic lock to be opened after confirming that there is no error, the staff of the production workshop opens the electronic lock through identity authentication, takes out the chemicals, the intelligent transfer device 1 identifies the transferred items to generate a transfer-out list and reports it to the server management system;

[0100] Step S5) The server management system compares the lists, in this process, due to the involvement of multiple workshops and a large number of chemicals, some abnormal situations may occur, for example, the number of a chemical in the transfer-out list reported by a certain intelligent transfer device 1 is inconsistent with that in the reagent cabinet transfer-in list, the server management system immediately issues an alarm to prompt the administrator, the administrator quickly queries the relevant information through the system, finds that it is an operation error when taking out the chemicals, and timely corrects it to ensure the accuracy and integrity of the chemical transfer.

[0101] Through the chemical intelligent management and control system and the management and control method, the chemical enterprise realizes safe and orderly transfer and management of chemicals in a large-scale and complex environment, effectively reduces the safety risk of chemicals in the transfer process, improves the production efficiency, and ensures the smooth production, and is suitable for ensuring safe and orderly transfer and management of chemicals in a large-scale and complex environment.

[0102] The above has made a detailed description of the present application, the above is only the preferred embodiment of the present application, which cannot limit the scope of the present application, that is, all equivalent changes and modifications made within the scope of the present application should still fall within the scope of the present application.

Claims

1. An RFID-based intelligent management system for chemicals, characterized in that: The intelligent management and control system comprises an intelligent transfer device and a server management system, the server management system is in communication connection with one or more intelligent transfer devices; the intelligent transfer device comprises a transfer structure, an operation screen and a main control panel, the operation screen is fixed on the transfer structure, the main control panel is fixed inside the transfer structure, and the operation screen is in electrical connection with the main control panel; The inside of the transfer structure is provided with a storage space for accommodating chemicals, and the outside of the storage space is fixed with an electric control lock for locking or opening the storage space; the main control panel comprises a control module, a power module, an RFID identification module for identifying the RFID tag on the chemical to obtain the chemical information, a positioning module for obtaining the real-time position information of the intelligent transfer device, an identity recognition module for receiving and verifying the user identity information, an electric control lock driving module, a sensor module and a serial communication module, the control module is in electrical connection with the power module, the RFID identification module, the positioning module, the identity recognition module, the electric control lock driving module, the sensor module and the serial communication module, and the control module is in communication connection with the server management system through the serial communication module. 2.The RFID-based intelligent chemical management system according to claim 1, wherein: The control module comprises a main control chip U2, a clock circuit and a reset circuit, the main control chip U2 is of the model STM32F103RCT6, the 5th pin and the 6th pin of the main control chip U2 are in electrical connection with the clock circuit, and the 7th pin of the main control chip U2 is in electrical connection with the reset circuit. 3.The RFID-based intelligent chemical management system according to claim 1, wherein: The RFID identification module comprises an RFID identification interface P7 and an RFID output interface P8, the 3rd pin and the 2nd pin of the RFID identification interface P7 are connected with an RFRX serial communication line and an RFTX serial communication line respectively, the 3rd pin and the 2nd pin of the RFID identification interface P7 are in electrical connection with the serial communication module, and the RFID identification interface P7 is in electrical connection with the main control chip U2 of the control module through the serial communication module; the identity recognition module comprises an IC interface P9 and an IC interface P10, the 3rd pin and the 2nd pin of the IC interface P9 are connected with an ICRX serial communication line and an ICTX serial communication line respectively, the 3rd pin and the 2nd pin of the IC interface P9 are in electrical connection with the serial communication module, and the IC interface P9 is in electrical connection with the main control chip U2 of the control module through the serial communication module. 4.The RFID-based intelligent chemical management system according to claim 1, wherein: The positioning module comprises a positioning module connecting seat P3, the 5th pin of the positioning module connecting seat P3 is in electrical connection with the 53rd pin of the main control chip U2, and the 4th pin of the positioning module connecting seat P3 is in electrical connection with the 54th pin of the main control chip U2, wherein the positioning module connecting seat P3 is an interface connecting seat for a GNSS positioning module, a Bluetooth module and a 4g positioning module. 5.The RFID-based intelligent chemical management system according to claim 1, wherein: The electric control lock driving module comprises a door state detection unit for detecting the opening and closing state of the door and outputting a detection signal and an electric control lock control unit for controlling the on-off of the electric control lock according to a control signal, the door state detection unit is in electrical connection with the electric control lock control unit, and the door state detection unit and the electric control lock control unit are in electrical connection with the main control chip U2 of the control module. 6.The RFID-based intelligent chemical management system according to claim 5, wherein: The door state detection unit includes a door lock interface seat P11, resistors R19, R20, R22, voltage division resistors R25 and R26, the 3rd pin, the 2nd pin and the 1st pin of the door lock interface seat P11 are electrically connected with the resistors R19, R20 and R22 respectively, and the 2nd pin and the 1st pin of the door lock interface seat P11 are also electrically connected with the 33rd pin and the 35th pin of the master control chip U2; the electric control lock control unit includes a control signal input end PB13, a transistor amplification circuit and a MOS tube switching circuit, the transistor amplification circuit is electrically connected with the 34th pin of the master control chip U2 through the control signal input end PB13, and the transistor amplification circuit is connected with the MOS tube switching circuit, and the control signal is amplified through the transistor amplification circuit to drive the MOS tube switching circuit to realize the on-off control of the electric control lock. 7.The RFID-based intelligent chemical management system according to claim 1, wherein: The sensor module includes a TVOC and temperature and humidity interface seat P12, resistors R21, R23, R24 and R27, one end of the resistors R23 and R21 is electrically connected with the 4th pin and the 5th pin of the TVOC and temperature and humidity interface seat P12 respectively, the other end of the resistors R23 and R21 is electrically connected with the 16th pin and the 17th pin of the master control chip U2 respectively, one end of the resistors R27 and R24 is electrically connected with the 2nd pin and the 3rd pin of the TVOC and temperature and humidity interface seat P12 respectively, the other end of the resistors R27 and R24 is electrically connected with the 29th pin and the 30th pin of the master control chip U2 respectively, and the TVOC and temperature and humidity interface seat P12 is electrically connected with the 16th pin, the 17th pin, the 29th pin and the 30th pin of the master control chip U2 through the resistors R23, R21, R27 and R24.

8. An RFID-based intelligent management method for chemicals, characterized in that: The intelligent management and control method includes the following processes: Step S1) in the warehouse delivery link, in response to the chemical being put into the storage space of the intelligent transfer device, the RFID identification module of the intelligent transfer device automatically identifies the RFID tag on the chemical, generates a transfer list, and uploads the transfer list to the server management system; Step S2) the server management system sends a target reagent cabinet allocation instruction to the intelligent transfer device according to the pre-stored laboratory allocation information; the intelligent transfer device receives the target reagent cabinet allocation instruction, controls the electric control lock of the intelligent transfer device to be locked after obtaining user confirmation through the operation screen, and reports the transfer list and target reagent cabinet information to the server management system; Step S3) in the transfer link, the positioning module of the intelligent transfer device acquires position information in real time and reports it to the server management system to generate a transfer track; during this period, the electric control lock is maintained in a locked state, and the electric control lock is prohibited to be opened through the identity recognition module. Step S4) In the reagent cabinet storage link, when the server management system confirms that the intelligent transfer device reaches the position of the target reagent cabinet based on the position information, an authorization signal is sent to the intelligent transfer device to authorize the electric control lock to be opened; in response to the successful verification of the identity information input by the identity recognition module at the target reagent cabinet, the electric control lock is controlled to be opened; when the chemical is taken out, the RFID recognition module automatically recognizes the taken-out chemical, generates a transfer-out list and reports it to the server management system; Step S5) The server management system compares the transfer-out list with a pre-stored transfer-in list, wherein the transfer-in list is an expected storage chemical list generated by the server management system at the storage link according to the transfer list; if the comparison is consistent, the transfer is completed, and if the comparison is inconsistent, an alarm information is generated. 9.The RFID-based intelligent management method for chemicals according to claim 8, characterized in that: In step S4), the "authorization of the electric control lock to be opened" specifically includes: the control unit of the intelligent transfer device controls the electric control lock to switch from the locking state to the openable state according to the matching result of the current position information and the position of the target reagent cabinet, and in the openable state, the electric control lock is opened only when the information input by the identity recognition module is verified. 10.The RFID-based intelligent management method for chemicals according to claim 8, characterized in that: In step S2), the "receiving a target reagent cabinet allocation instruction" specifically includes: The server management system automatically recommends a corresponding reagent cabinet as the target reagent cabinet according to the laboratory to which the user belongs; Receiving the adjustment or confirmation operation of the administrator on the recommended target reagent cabinet to form the final target reagent cabinet allocation instruction.

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