WO2023241170A1 - Procédé de commande à distance pour dispositif de vente de repas automatique - Google Patents

Procédé de commande à distance pour dispositif de vente de repas automatique Download PDF

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Publication number
WO2023241170A1
WO2023241170A1 PCT/CN2023/085022 CN2023085022W WO2023241170A1 WO 2023241170 A1 WO2023241170 A1 WO 2023241170A1 CN 2023085022 W CN2023085022 W CN 2023085022W WO 2023241170 A1 WO2023241170 A1 WO 2023241170A1
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WO
WIPO (PCT)
Prior art keywords
remote control
vending device
automatic
control terminal
message
Prior art date
Application number
PCT/CN2023/085022
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English (en)
Chinese (zh)
Inventor
陈合林
陈美荣
张天禄
Original Assignee
爱仕达股份有限公司
浙江爱仕达生活电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 爱仕达股份有限公司, 浙江爱仕达生活电器有限公司 filed Critical 爱仕达股份有限公司
Publication of WO2023241170A1 publication Critical patent/WO2023241170A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/0064—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for processing of food articles
    • G07F17/0078—Food articles which need to be processed for dispensing in a hot or cooked condition, e.g. popcorn, nuts
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F9/00—Details other than those peculiar to special kinds or types of apparatus
    • G07F9/002—Vending machines being part of a centrally controlled network of vending machines
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/045—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply hybrid encryption, i.e. combination of symmetric and asymmetric encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H04W12/069—Authentication using certificates or pre-shared keys
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/69—Identity-dependent
    • H04W12/73—Access point logical identity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the technical field of remote control, and in particular to a remote control method for an automatic food vending device.
  • the present invention is mainly to solve the problem of potential safety hazards in the traditional remote control method of an automatic meal vending device. It provides a remote control method for an automatic meal vending device, which includes the following steps: 1) Personalized setting of the automatic meal vending device; There is an SE chip in the automatic meal vending device; 2) Connect the automatic meal vending device to the wireless LAN; 3) Establish a binding relationship between the remote control terminal and the automatic meal vending device; 4) Control the automatic meal vending device through the remote control terminal.
  • the present invention uses PKI secret key system technology to realize functions such as network identity identification, network communication confidentiality, communication data anti-tampering, communication subject non-repudiation, etc., and improves the security of the remote control method of the automatic meal vending device; all data used in the communication process are The data is transmitted in ciphertext, and the security of the data is guaranteed by the strength of the encryption algorithm used, thereby avoiding problems such as communication data tampering and information leakage, and solving various security risks in the existing remote control methods of automatic food vending devices. .
  • a remote control method for an automatic food vending device including the following steps:
  • Step S1 Personalize the automatic meal vending device, and the automatic meal vending device is equipped with an SE chip;
  • the basic information includes the equipment certificate, encryption key pair and equipment number of the automatic food vending device; at the same time, the registration system certificate and the registration system Encrypted public key storage Store it in the SE chip of the automatic food vending device; finally, display the equipment number on the automatic food vending device or the user manual related to the automatic food vending device;
  • Step S2 Connect the automatic meal vending device to the wireless LAN;
  • the automatic vending device decrypts the ciphertext data containing the wireless LAN SSID and WIFI access password sent by the remote control terminal, obtains the SSID and WIFI access password, and then connects to the wireless LAN with the SSID and WIFI access password;
  • Step S3 Establish a binding relationship between the remote control terminal and the automatic meal vending device
  • the device certificate is used as the root of trust to establish a binding relationship between the remote control terminal and the automatic food vending device; the App application obtains the device number through the user's manual input or scanning of the barcode;
  • Step S4 Control the automatic meal vending device through the remote control terminal
  • the remote control terminal obtains the status of the automatic meal vending device, organizes a control message and sends it to the automatic meal vending device.
  • the control message includes a digital signature, remote control terminal identity information, control time and control command; the automatic meal vending device verification control Whether the digital signature of the message, the identity information of the remote control terminal, the control time and the control command are legal, if legal, the command is executed; if not, a message indicating that the control information is illegal is sent to the remote control terminal.
  • step S1 includes the following steps:
  • Step A1 Download the basic information of the automatic food vending device into the SE chip of the automatic food vending device.
  • the basic information includes the equipment certificate, encryption key pair and equipment number;
  • Step A2 Store the registration system certificate and the registration system encryption public key in the SE chip of the automatic food vending device;
  • Step A3 Display the equipment number on the automatic food vending device or the user manual related to the automatic food vending device.
  • step S2 includes the following steps:
  • Step B1 The remote control terminal sends the ciphertext containing the wireless LAN SSID and WIFI access password to the automatic meal vending device;
  • Step B2 The automatic food vending device decrypts the ciphertext data and obtains the SSID and WIFI access password;
  • Step B3 The automatic food vending device connects to the wireless LAN using the SSID and WIFI access password;
  • the remote control terminal obtains the basic information of the automatic food vending device that needs to establish a binding connection and the SSID and WIFI access password in the wireless LAN used; the remote control terminal uses the device number in the basic information as the first encryption algorithm key, and uses the first encryption algorithm key.
  • An encryption algorithm encrypts the SSID and WIFI access password of the wireless router to obtain ciphertext data; the remote control terminal pushes the ciphertext data to the automatic food vending device in the form of a UDP message; the automatic food vending device receives all After describing the ciphertext data, use the own device number as the decryption key of the first encryption algorithm, use the first encryption algorithm to decrypt the ciphertext data, and obtain the plaintext data of the SSID of the wireless router and the WIFI access password; the automatic vending machine
  • the meal device uses the plaintext data to configure its own wireless network module, performs an access network operation, and connects the automatic meal vending device to the wireless local area network.
  • the first encryption algorithm is a symmetric encryption and decryption algorithm.
  • step S3 under the coordination of the cloud server, the device certificate is used as the root of trust to establish a binding relationship between the remote control terminal and the automatic meal vending device.
  • the specific process includes the following steps:
  • Step C1 The remote control terminal sends the encrypted binding request message A containing its own signature public key and unique physical information to the automatic meal vending device; the remote control terminal's unique physical information includes the remote control terminal ID, mobile phone number and PAD sequence No.; remote control terminals include smartphones, PCs, and PADs;
  • Step C2 The automatic meal vending device sequentially signs and encrypts the decrypted binding request message A to obtain message B, and sends message B to the registration system of the cloud server through the remote control terminal for decryption and signature verification.
  • the registration system sends the remote control terminal's signature public key and the remote control terminal's unique physical information in the message B that passes the signature verification to the certification system;
  • Step C3 The certification system generates the remote control terminal signature certificate and the remote control terminal encryption key pair and sends them to the registration system;
  • Step C4 The registration system signs and encrypts the message C containing the remote control terminal signature certificate and the remote control terminal encryption key pair, and then sends it to the automatic meal vending device via the remote control terminal;
  • Step C5 The automatic food vending device decrypts and verifies the signature of message C, then re-encrypts the decrypted message C to obtain message D and sends it to the remote control terminal;
  • Step C6 The remote control terminal decrypts the message D to obtain its own signature certificate and encryption key pair and stores them, completing the binding between the remote control terminal and the automatic food vending device.
  • step S4 includes the following steps:
  • Step D1 The remote control terminal obtains the status of the automatic meal vending device, organizes a control message and sends it to the automatic meal vending device.
  • the control message includes a digital signature, remote control terminal identity information, control time and control command;
  • Step D2 The automatic meal vending device verifies whether the digital signature of the control message, the identity information of the remote control terminal, the control time and the control command are legal. If legal, the command is executed; if not, a message indicating that the control information is illegal is sent to Remote control terminal;
  • the remote control terminal logs in to the cloud server through the App application installed on itself, and finds the automatic food vending device that needs to be controlled; the App application receives the control information input by the user and organizes the control data according to the preset communication protocol Finally, use the signature private key of the remote control terminal to sign the control data, and then use the encrypted public key of the automatic meal vending device to encapsulate the control data message into a digital envelope and send it to the automatic meal vending device; the instruction digital envelope includes the control command , time information and remote control terminal identity information; the automatic vending device uses its own encrypted private key to unlock the instruction digital envelope, and then uses the remote control terminal's public key stored in the binding list to perform signature verification on the digital signature of the instruction digital envelope.
  • step C1 the specific process of step C1 is: the remote control terminal generates its own signature key pair, and uses its own signature public key and unique physical information as the data of the binding request message A, and then uses the automatic vending device's
  • the device number is the symmetric encryption key that encrypts the binding request message A, and finally sends the encrypted binding request message A to the automatic meal vending device.
  • step C2 includes the following steps:
  • Step C21 The automatic meal vending device uses its own device number as the symmetric decryption key, decrypts the encrypted binding request message A sent by the remote control terminal, obtains the plain text of the binding request message A, and then the automatic meal vending device Use your own signing private key to sign the plain text, and the registration system's encrypted public key to encrypt the signed plain text to obtain message B containing the remote control end's signature public key and the remote control end's unique physical information;
  • Step C22 The automatic meal vending device sends message B to the remote control terminal, and then the remote control terminal sends it to the registration system of the cloud server;
  • Step C23 The registration system first uses its own encryption private key to decrypt message B, and then uses the automatic vending device signature public key to perform signature verification on the decrypted message B; if either decryption or signature verification fails, the registration system will Terminate the binding process and send an error code to the automatic meal vending device; if the decryption and signature verification are passed, the registration system will forward the signature public key and unique physical information of the remote control end obtained from message B to the certification system.
  • the certificate production system generates the signature certificate and encryption key pair of the remote control terminal based on the signature public key and physical unique information of the remote control terminal, and then sends the generated signature certificate and encryption key pair to the registration system.
  • step C4 includes the following steps:
  • Step C41 The registration system stores the remote control terminal's signature certificate, encryption key pair and remote control terminal's unique physical information sent by the certification system, and records the binding relationship between the remote control terminal and the automatic meal vending device;
  • Step C42 Use the registration system's own signature private key to sign the message C containing the remote control terminal's signature certificate and encryption key pair, and then use the encryption public key of the automatic vending device to encrypt the signed message C;
  • Step C43 Send the encrypted message C to the remote control terminal, and the remote control terminal sends the encrypted message C to the automatic meal vending device.
  • step C5 includes the following steps:
  • Step C51 The automatic vending device uses the private key of its own encryption key pair to decrypt the encrypted message C, and then uses the signature public key of the registration system stored in the SE chip to perform signature verification on the decrypted message C. If If either decryption or signature verification fails, the binding process will be terminated and an error code will be returned to the remote control terminal; if both decryption and signature verification pass, the remote control terminal's signature certificate and encryption key pair will be stored in the SE chip;
  • Step C52 The automatic food vending device uses its own device number to encrypt the message D containing the signature certificate and encryption key pair of the remote control terminal, and then sends the encrypted message D to the remote control terminal.
  • step C6 the remote control terminal decrypts the received encrypted message D using the equipment number of the automatic meal vending device as the symmetric decryption key, obtains its own signature certificate and encryption key pair, and finally converts its own The signing certificate and encryption key pair are stored in the corresponding directory.
  • Figure 1 is a flow chart of a remote control method for an automatic food vending device in Embodiment 1 of the present invention.
  • Figure 2 is a schematic structural diagram of an automatic food vending device in Embodiment 2 of the present invention.
  • a remote control method for an automatic food vending device includes the following steps:
  • Step S1 Personalize the automatic meal vending device, and the automatic meal vending device is equipped with an SE chip;
  • the basic information includes the equipment certificate, encryption key pair and equipment number of the automatic food vending device; at the same time, store the registration system certificate and registration system encryption public key. into the SE chip of the automatic food vending device; finally, display the device number on the automatic food vending device or the user manual related to the automatic food vending device;
  • Step S2 Connect the automatic meal vending device to the wireless LAN;
  • the automatic vending device decrypts the ciphertext data containing the wireless LAN SSID and WIFI access password sent by the remote control terminal, obtains the SSID and WIFI access password, and then connects to the wireless LAN with the SSID and WIFI access password;
  • Step S3 Establish a binding relationship between the remote control terminal and the automatic meal vending device
  • the device certificate is used as the root of trust to establish a binding relationship between the remote control terminal and the automatic meal vending device;
  • the App obtains the device number through the user's manual input or scanning of the barcode;
  • Step S4 Control the automatic meal vending device through the remote control terminal
  • the remote control terminal obtains the status of the automatic meal vending device, organizes the control message and sends it to the automatic meal vending device.
  • the control message includes digital signature, remote control terminal identity information, control time and control command; the automatic meal vending device verifies the control message.
  • the digital signature, remote control end identity information, control time and control command are legal. If they are legal, the command is executed; if not, a message indicating that the control information is illegal is sent to the remote control end.
  • step S2 The specific process of step S2:
  • the remote control terminal obtains the basic information of the automatic food vending device that needs to establish a binding connection and the SSID and WIFI access password in the wireless LAN used;
  • the remote control terminal uses the device number in the basic information as the first encryption algorithm secret key, uses the first encryption algorithm to encrypt the SSID and WIFI access password of the wireless router, and obtains the ciphertext data;
  • the first encryption algorithm is a symmetric encryption and decryption algorithm. ;
  • the remote control terminal pushes the ciphertext data to the automatic meal vending device in the form of UDP messages;
  • the automatic food vending device After the automatic food vending device receives the ciphertext data, it uses its own device number as the decryption key of the first encryption algorithm, uses the first encryption algorithm to decrypt the ciphertext data, and obtains the plaintext data of the SSID of the wireless router and the WIFI access password. ;
  • the automatic food vending device uses plain text data to configure its own wireless network module, performs access network operations, and connects the automatic food vending device to the wireless LAN.
  • step S3 The specific process of step S3:
  • the remote control terminal sends the encrypted binding request message A containing its own signature public key and unique physical information to the automatic meal vending device;
  • the unique physical information of the remote control terminal includes the remote control terminal ID, mobile phone number and PAD serial number;
  • the remote control terminal Control terminals include smartphones, PCs, and PADs;
  • the automatic meal vending device sequentially signs and encrypts the decrypted binding request message A to obtain message B, and sends message B to the registration system of the cloud server through the remote control terminal for decryption and signature verification.
  • the registration system will The remote control terminal's signature public key and the remote control terminal's unique physical information in message B that passes the signature verification are sent to the certification system;
  • the certification system generates the remote control terminal signature certificate and the remote control terminal encryption key pair and sends them to the registration system;
  • the registration system signs and encrypts the message C containing the remote control terminal signature certificate and the remote control terminal encryption key pair, and then sends it to the automatic meal vending device via the remote control terminal;
  • the automatic meal vending device decrypts and verifies the signature of message C, then re-encrypts the decrypted message C to obtain message D and sends it to the remote control terminal;
  • the remote control end decrypts the message D to obtain its own signature certificate and encryption key pair and stores them, completing the binding between the remote control end and the automatic food vending device.
  • step S4 The specific process of step S4:
  • the remote control terminal logs in to the cloud server through the App installed on itself, and finds the automatic food vending device that needs to be controlled;
  • the App application After the App application receives the control information input by the user and organizes the control data according to the preset communication protocol, it uses the signature private key of the remote control terminal to sign the control data, and then uses the encrypted public key of the automatic vending device to control the data. After the data message is encapsulated into a digital envelope, it is sent to the automatic meal vending device; the instruction digital envelope includes control commands, time information and remote control terminal identity information;
  • the automatic vending device unlocks the instruction digital envelope with its own encrypted private key, and then uses the public key of the remote control terminal stored in the binding list to perform signature verification on the digital signature of the instruction digital envelope. If the signature verification is valid, proceed to the next step; if If the signature verification is invalid, a prompt message indicating that the information is illegal will be sent to the APP application;
  • step C1 The specific process of step C1:
  • the remote control end generates its own signature key pair, and uses its own signature public key and unique physical information as the data of the binding request message A, and then uses the device number of the automatic vending device as the symmetric encryption key to encrypt and bind request message A, and finally send the encrypted binding request message A to the automatic meal vending device.
  • the automatic food vending device uses its own device number as the symmetric decryption key, decrypts the encrypted binding request message A sent by the remote control terminal, and obtains the plain text of the binding request message A. Then the automatic food vending device uses its own The signature private key signs the plain text, and the registration system's encrypted public key encrypts the signed plain text to obtain message B containing the remote control end's signature public key and the remote control end's unique physical information;
  • the automatic meal vending device sends message B to the remote control terminal, and then the remote control terminal sends it to the registration system of the cloud server; the registration system first uses its own encryption private key to decrypt message B, and then uses the automatic meal vending device signature public key Perform signature verification on decrypted message B; if either decryption or signature verification fails, the registration system will terminate the binding process and send an error code to the vending device; if both decryption and signature verification pass, the registration system will The remote control terminal's signature public key and unique physical information obtained from message B are forwarded to the certification system;
  • the certificate production system generates the signature certificate and encryption key pair of the remote control terminal based on the signature public key and physical unique information of the remote control terminal, and then sends the generated signature certificate and encryption key pair to the registration system.
  • step C4 The specific process of step C4:
  • the registration system stores the remote control terminal’s signature certificate, encryption key pair and the remote control terminal’s unique physical identity sent by the certification system. information, and record the binding relationship between the remote control terminal and the automatic meal vending device;
  • the encrypted message C is sent to the remote control terminal, and the remote control terminal sends the encrypted message C to the automatic meal vending device.
  • the automatic vending device uses the private key of its own encryption key pair to decrypt the encrypted message C, and then uses the signature public key of the registration system stored in the SE chip to perform signature verification on the decrypted message C. If the decryption and signature If any verification process fails, the binding process will be terminated and an error code will be returned to the remote control terminal; if both decryption and signature verification pass, the remote control terminal's signature certificate and encryption key pair will be stored in the SE chip;
  • the automatic vending device uses its own device number to encrypt the message D containing the remote control terminal's signature certificate and encryption key pair, and then sends the encrypted message D to the remote control terminal;
  • the remote control end decrypts the received encrypted message D using the equipment number of the automatic meal vending device as the symmetric decryption key, obtains its own signature certificate and encryption key pair, and finally stores its own signature certificate and encryption key pair in the corresponding in the directory.
  • An automatic meal vending device includes a prefabricated meal heating and insulation meal dispensing assembly 1 and a transportation component 3.
  • the prefabricated meal heating and insulation meal dispensing assembly 1 includes three layers of meal storage chambers, each layer Different types of fast food are stored in the meal storage cavity.
  • the prefabricated meal heating and insulation meal delivery assembly 1 is provided with a meal outlet on the outer wall;
  • the transportation component 3 includes a conveyor belt tabletop and a tabletop conveyor belt electric roller. There is a delivery belt on the conveyor belt tabletop.
  • the dining trolley 2 has a trolley drive motor and a trolley drive rod.
  • the food delivery trolley 2 is equipped with an ordering screen; it is also equipped with a dustbin, a garbage conveyor belt, a garbage conveyor belt power roller, a garbage compression screw and a garbage compression rod drive assembly.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Selective Calling Equipment (AREA)

Abstract

Est divulgué dans la présente invention un procédé de commande à distance pour dispositif de vente de repas automatique, comprenant les étapes suivantes : 1) la réalisation d'une personnalisation sur un dispositif de vente de repas automatique, le dispositif de vente de repas automatique étant pourvu intérieurement d'une puce SE ; 2) l'autorisation accordée au dispositif de vente de repas automatique pour accéder à un réseau local sans fil ; 3) l'établissement d'une relation de liaison entre une extrémité de commande à distance et le dispositif de vente de repas automatique ; et 4) la commande du dispositif de vente de repas automatique au moyen de l'extrémité de commande à distance. Selon la présente invention, des fonctions d'identification d'identité de réseau, de confidentialité de communication de réseau, d'inviolabilité de données de communication et de non-répudiation d'un sujet de communication sont obtenues à l'aide d'une technique de système de clé PKI, de façon à améliorer la sécurité du procédé de commande à distance pour un dispositif de vente de repas automatique ; tous les éléments de données utilisés dans un processus de communication sont transmis dans un mode de cryptogramme, et la sécurité des données est assurée par l'intensité d'un algorithme de chiffrement utilisé, de telle sorte que les problèmes tels que l'altération de données de communication et la fuite d'informations sont évités, et de multiples risques de sécurité présents dans des procédés de commande à distance existants pour un dispositif de vente de repas automatique sont éliminés.
PCT/CN2023/085022 2022-06-13 2023-03-30 Procédé de commande à distance pour dispositif de vente de repas automatique WO2023241170A1 (fr)

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CN202210666045.7 2022-06-13
CN202210666045.7A CN115277797A (zh) 2022-06-13 2022-06-13 一种用于自动售餐装置的远程控制方法

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CN115277797A (zh) * 2022-06-13 2022-11-01 爱仕达股份有限公司 一种用于自动售餐装置的远程控制方法

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