CN104495545A - Electronic elevator maintenance supervision and management system and method for elevator maintenance based on dynamic two-dimensional codes - Google Patents

Abstract

An elevator maintenance electronic supervision system based on a dynamic two-dimensional code, comprising an elevator maintenance electronic supervision server, an intelligent display device installed in an elevator car, and a maintenance collection device carried by elevator maintenance personnel. The electronic monitoring system for elevator maintenance based on dynamic two-dimensional codes prevents elevator maintenance personnel from cheating to complete elevator maintenance operations, thereby improving elevator maintenance quality, ensuring elevator operation safety, and reducing elevator operation safety accidents. The invention also provides an electronic supervision method for elevator maintenance based on a dynamic two-dimensional code.

Description

Elevator maintenance electronic supervision system and method based on dynamic two-dimensional code

technical field

The invention relates to the technical field of elevator maintenance, in particular to an elevator maintenance electronic supervision system and method based on a dynamic two-dimensional code.

Background technique

With the continuous development of society and the continuous improvement of people's living standards, more and more high-rise buildings are built. Elevators are an essential component of high-rise buildings, and people go up and down in high-rise buildings through elevators.

Therefore, ensuring the safe operation of elevators is the only means to ensure the safety of elevator passengers. At present, there are two electronic monitoring technologies for elevator maintenance: one is to paste high-frequency RFID electronic tags in the elevator car, and the electronic tag chip is written into the elevator Register the code, read the electronic tag information through the special RFID PDA equipment, carry out the elevator maintenance operation and upload the elevator maintenance data to the elevator maintenance supervision platform through the GPRS network. This technology requires the use of special PDA equipment, which is expensive and bulky Large, it is inconvenient for maintenance personnel to carry it, which is not conducive to promotion; another is to use two-dimensional code technology to paste the two-dimensional code paper sign containing the elevator registration code information on the elevator car, and the maintenance personnel can use the smart The handheld device scans the QR code to obtain the elevator registration code information, performs elevator maintenance operations on the smart handheld device, and uploads the elevator maintenance data to the elevator maintenance supervision platform through the GPRS network. In this technology, the elevator registration code carried by the QR code is static information. Elevator maintenance operators can easily save and copy the QR code image information of the elevator by taking pictures, and complete maintenance by scanning the copied QR code image information. Maintenance operation, so that there is no need to go to the elevator site, and use cheating to complete the elevator maintenance operation.

Contents of the invention

In view of this, it is necessary to provide an elevator maintenance electronic monitoring system based on a dynamic two-dimensional code that prevents elevator maintenance operators from completing elevator maintenance operations without being on site.

It is also necessary to provide an electronic monitoring method for elevator maintenance based on a dynamic two-dimensional code.

An elevator maintenance electronic supervision system based on a dynamic two-dimensional code, including an elevator maintenance electronic supervision server, an intelligent display device installed in the elevator car, a maintenance acquisition device carried by elevator maintenance personnel, and an elevator maintenance electronic monitoring system. The supervisory server is used to randomly generate an encryption key when the scheduled time arrives, and record the generated encryption key, and encrypt the pre-stored elevator registration code according to the generated encryption key and a predetermined encryption algorithm to obtain the ciphertext of the elevator registration code. According to the ciphertext of the elevator registration code, the plain text of the elevator registration code and the website of the elevator maintenance electronic supervision server, the elevator dynamic registration code information is generated, and the elevator dynamic registration code information is pushed to the intelligent display device. The elevator maintenance electronic supervision server is also used to receive maintenance The maintenance start request information transmitted by the maintenance acquisition device, and the predetermined encryption algorithm and encryption key are used to decrypt the maintenance start request information to obtain the decrypted maintenance start request information, and after judging the decrypted maintenance start request information and storage When corresponding to the elevator registration code, generate maintenance confirmation information, and provide the maintenance confirmation information to the maintenance collection device, so that the elevator maintenance personnel can start maintenance operations on the elevator; the intelligent display device receives the dynamic registration code information of the elevator , and generate corresponding two-dimensional code picture data according to the elevator dynamic registration code information and the preset two-dimensional code coding algorithm, and display the corresponding two-dimensional code picture according to the two-dimensional code picture data, wherein the two-dimensional code picture data includes the elevator registration Code ciphertext data, elevator registration code plaintext data, elevator maintenance electronic supervision server website data; the maintenance collection device is used to respond to elevator maintenance personnel scanning the two-dimensional code picture displayed on the intelligent display device to obtain the two-dimensional code picture, and According to the pre-stored two-dimensional code encoding algorithm, analyze the obtained two-dimensional code image to obtain the ciphertext data of the elevator registration code, the website data of the elevator maintenance electronic supervision server, and according to the ciphertext data of the elevator registration code and the preset equipment type code Generate maintenance start request information, and provide the maintenance start request information to the elevator maintenance electronic supervision server according to the website data of the elevator maintenance electronic supervision server, and the maintenance collection device is also used to receive the maintenance information provided by the elevator maintenance electronic supervision server Confirm the information so that the elevator maintenance personnel can start maintenance operations on the elevator.

An electronic monitoring method for elevator maintenance based on a dynamic two-dimensional code, comprising the following steps:

Randomly generate an encryption key when the predetermined time comes, and record the generated encryption key;

Encrypt the pre-stored elevator registration code according to the generated encryption key and a predetermined encryption algorithm to obtain the ciphertext of the elevator registration code;

According to the cipher text of the elevator registration code, the plain text of the elevator registration code and the website of the elevator maintenance electronic supervision server, the elevator dynamic registration code information is generated, and the elevator dynamic registration code information is pushed to the intelligent display device installed in the elevator car, so that the intelligent display The device generates and displays two-dimensional code pictures according to the elevator dynamic registration code information and the preset two-dimensional code coding algorithm;

receiving the maintenance start request information transmitted by the maintenance acquisition device carried by the elevator maintenance personnel, and using the predetermined encryption algorithm and the stored encryption key to decrypt the maintenance start request information to obtain the decrypted maintenance start request information, The maintenance start request information is generated by scanning and analyzing the two-dimensional code picture displayed on the intelligent display device by the maintenance collection device, and the maintenance start request information includes the ciphertext data of the elevator registration code and the equipment type code corresponding to the maintenance collection device;

When it is judged that the decrypted maintenance start request information corresponds to the stored elevator registration code, the maintenance confirmation information is generated, and the maintenance confirmation information is provided to the maintenance acquisition device, so that the elevator maintenance personnel can start maintenance on the elevator operate.

The above-mentioned elevator maintenance electronic supervision system and method based on dynamic two-dimensional code randomly generates an encryption key when the predetermined time arrives, and records the generated encryption key, and performs the pre-stored elevator encryption according to the generated encryption key and the predetermined encryption algorithm. The registration code is encrypted to obtain the ciphertext of the elevator registration code, and the dynamic registration code information of the elevator is generated according to the ciphertext of the elevator registration code, the plaintext of the elevator registration code and the website of the elevator maintenance electronic supervision server, and the dynamic registration code information of the elevator is pushed to the The intelligent display device in the elevator car, so that the intelligent display device can generate and display the two-dimensional code picture according to the dynamic registration code information of the elevator and the preset two-dimensional code coding algorithm, and receive the transmission from the maintenance collection device carried by the elevator maintenance personnel The maintenance start request information, and use the predetermined encryption algorithm and the stored encryption key to decrypt the maintenance start request information to obtain the decrypted maintenance start request information. After judging that the decrypted maintenance start request information is consistent with the stored elevator When the registration code corresponds, generate maintenance confirmation information, and provide the maintenance confirmation information to the maintenance acquisition device, so that the elevator maintenance personnel can start maintenance operations on the elevator, so that the elevator maintenance personnel cannot use cheating methods to complete Elevator maintenance operation, so as to improve the quality of elevator maintenance, ensure the safety of elevator operation, and reduce elevator operation safety accidents.

Description of drawings

Fig. 1 is a schematic diagram of the application of an elevator maintenance electronic supervision system based on a dynamic two-dimensional code in a preferred embodiment.

FIG. 2 is a schematic diagram of functional modules of the elevator maintenance electronic supervision server in FIG. 1 .

In the figure: an elevator maintenance electronic supervision system 10 based on a dynamic two-dimensional code, an elevator maintenance electronic supervision server 20, a time judgment unit 21, a secret key generation unit 22, an elevator dynamic registration code information generation unit 23, and a maintenance start request An information identification unit 24 , an elevator safety inspection information generation unit 25 , a public inquiry service unit 26 , an intelligent display device 30 , and a maintenance collection device 40 .

Detailed ways

Please refer to Fig. 1 and Fig. 2 at the same time, the elevator maintenance electronic supervision system 10 based on the dynamic two-dimensional code includes the elevator maintenance electronic supervision server 20, the intelligent display device 30 arranged in the elevator car, and the electronic monitoring system carried by the elevator maintenance personnel. Maintenance collection device 40. The elevator maintenance electronic monitoring server 20 communicates with the intelligent display device 30 and the maintenance acquisition device 40 through a wireless network, for example, a wireless network using 4G communication standards, 3G communication standards, and 2G communication standards.

The elevator maintenance electronic supervision server 20 is used to randomly generate an encryption key when the predetermined time arrives, and record the generated encryption key, and encrypt the pre-stored elevator registration code according to the generated encryption key and a predetermined encryption algorithm to obtain an elevator key. The registration code ciphertext generates the elevator dynamic registration code information according to the elevator registration code ciphertext, the elevator registration code plaintext and the elevator maintenance electronic supervision server website, and pushes the elevator dynamic registration code information to the intelligent display device 30; the elevator maintenance electronic supervision The server 20 is also used to receive the maintenance start request information sent by the maintenance acquisition device 40, and use the predetermined encryption algorithm and encryption key to decrypt the maintenance start request information to obtain the decrypted maintenance start request information. When the decrypted maintenance start request information corresponds to the stored elevator registration code, maintenance confirmation information is generated, and the maintenance confirmation information is provided to the maintenance collection device 40, so that elevator maintenance personnel can start maintenance operations on the elevator. In this embodiment, the elevator maintenance electronic monitoring server 20 acquires the current system time when the predetermined time arrives, stores the current system time as an encryption key, and registers the pre-stored elevator according to the recorded system current time and a predetermined encryption algorithm. The code is encrypted to obtain the ciphertext of the elevator registration code. The current time of the system is in year, month, day, hour, and minute format. The elevator maintenance electronic supervision server 20 generates elevator safety inspection information after receiving the maintenance end confirmation information provided by the maintenance acquisition device 40. The elevator safety inspection information includes elevator equipment code, use number, maintenance unit, maintenance telephone, Inspection unit, inspection personnel, next inspection date; the elevator maintenance electronic supervision server 20 is also used to receive passenger query information generated by scanning the two-dimensional code picture displayed by the smart display device 30 through the mobile phone, and store the query information according to the passenger query information. The elevator safety inspection information corresponding to the plain text data of the elevator registration code is provided to the passenger's mobile phone, so that the passenger can understand the elevator maintenance situation.

The elevator maintenance electronic supervision server 20 is a modern intelligent electronic device that can automatically and quickly perform a large number of numerical calculations and various information processing according to the pre-stored program. The elevator maintenance electronic supervision server 20 is composed of CPU, motherboard, memory, Composed of multiple components such as a power supply, a chassis, a graphics card, and an antenna, the CPU runs a set of computer application programs used to complete the electronic supervision tasks of elevator maintenance, so that the electronic supervision server 20 of elevator maintenance can complete the above functions, that is, the CPU runs the above-mentioned After the computer application program, the following functional units are produced: time judgment unit 21, secret key generation unit 22, elevator dynamic registration code information generation unit 23, maintenance start request information identification unit 24, elevator safety inspection information generation unit 25, public inquiry service Unit 26. The time judging unit 21 is used to judge whether the current time of the system is the same as the predetermined time, and when it is judged that the current time of the system is the same as the predetermined time, the preset first start signal is output to the encryption key generation unit, and the encryption key generation unit 22 responds The first start signal randomly generates an encryption key, and records the generated encryption key. For example, the current system time is obtained at 03:26 on November 18, 2014. The encryption algorithm encrypts the pre-stored elevator registration code to obtain the ciphertext of the elevator registration code. According to the ciphertext of the elevator registration code, the plaintext of the elevator registration code and the website of the elevator maintenance electronic supervision server, the dynamic The code information is pushed to the intelligent display device 30 that establishes a communication connection with the elevator maintenance electronic supervision server 20; the maintenance start request information identification unit 24 is used to receive the maintenance start request information transmitted by the maintenance acquisition device 40, and adopt the predetermined The encryption algorithm and encryption key decrypt the maintenance start request information to obtain the decrypted maintenance start request information. When it is judged that the decrypted maintenance start request information corresponds to the stored elevator registration code, a maintenance confirmation message is generated and sent to The maintenance confirmation information is provided to the maintenance collecting device 40, so that the elevator maintenance personnel start to carry out the maintenance operation on the elevator; Generate elevator safety inspection information and record the elevator safety inspection information. The elevator safety inspection information includes elevator equipment code, use number, maintenance unit, maintenance telephone, inspection unit, inspection personnel, and next inspection date; public inquiry service unit 26 It is used to receive passenger query information, and provide the stored elevator safety inspection information corresponding to the plain text data of the elevator registration code to the passenger's mobile phone according to the passenger query information, so that passengers can understand the elevator maintenance situation. Certainly, the information exchange between the elevator maintenance electronic monitoring server 20 and the maintenance collection device 40 and public mobile phones can be realized through the Internet, that is, the elevator maintenance electronic supervision server 20 provides corresponding webpages and URLs, and the maintenance collection device 40, The public mobile phone accesses the webpage according to the website, and the elevator maintenance electronic supervision server 20 obtains the required information according to the access request provided by the maintenance collection device 40 and the public mobile phone, and then the above-mentioned functional units complete the information processing.

The intelligent display device 30 receives the elevator dynamic registration code information, generates corresponding two-dimensional code image data according to the elevator dynamic registration code information and the preset two-dimensional code encoding algorithm, and displays the corresponding two-dimensional code image data according to the two-dimensional code image data , wherein the two-dimensional code picture data includes the ciphertext data of the elevator registration code, the plaintext data of the elevator registration code, and the website data of the elevator maintenance electronic supervision server. Further, the intelligent display device 30 generates the elevator safety inspection information display interface data information according to the elevator registration code plaintext in the elevator dynamic registration code information, and displays the elevator safety inspection information display interface data information, and the intelligent display device superimposes the two-dimensional code picture It is displayed on the displayed elevator safety inspection information display interface, and the two-dimensional code picture is located in the lower right corner of the elevator safety inspection information display interface. The intelligent display device 30 is an intelligent electronic device mainly composed of hardware such as a communication module, a CPU, a memory, a circuit board, and a display. The CPU of the intelligent display device 30 runs a set of electronic monitoring tasks for elevator maintenance at the end of the intelligent display device. After the computer application program, the smart display device 30 is made to complete the above functions.

The maintenance collection device 40 is used to respond to the scanning operation of the elevator maintenance personnel on the two-dimensional code picture displayed by the intelligent display device 30 to obtain the two-dimensional code picture, and analyze the acquired two-dimensional code picture according to the pre-stored two-dimensional code coding algorithm to obtain the two-dimensional code picture. Obtain the ciphertext data of the elevator registration code, the website data of the elevator maintenance electronic supervision server, and generate maintenance start request information according to the ciphertext data of the elevator registration code and the preset equipment type code, and send The maintenance start request information is provided to the elevator maintenance electronic supervision server 20, and the maintenance acquisition device 40 is also used to receive the maintenance confirmation information provided by the elevator maintenance electronic supervision server 20, so that the elevator maintenance personnel can start maintenance on the elevator operation; further, the maintenance acquisition device 40 is also used to respond to the elevator maintenance personnel to complete the maintenance operation, generate maintenance end confirmation information according to the elevator registration code ciphertext data and the preset equipment type code, and according to the elevator maintenance electronic Supervise the server website data, and provide the maintenance end confirmation information to the elevator maintenance electronic supervision server 20 . The maintenance collection device 40 is mainly an intelligent electronic device composed of hardware such as a communication module, CPU, memory, circuit board, display, and camera. After the computer application program of the electronic supervision task is installed, the maintenance collection device 40 is made to complete the above functions. For example, the maintenance collection device 40 can be a smart phone, and the maintenance collection device 40 can realize the above functions after downloading the AAP application software related to the electronic supervision task of elevator maintenance.

Further, the present invention also provides an electronic supervision method for elevator maintenance based on a dynamic two-dimensional code. The electronic supervision method for elevator maintenance based on a dynamic two-dimensional code is applied to an electronic supervision server for elevator maintenance, so that the elevator maintenance The electronic maintenance supervision server realizes data exchange with the intelligent display device installed in the elevator car and the maintenance acquisition device carried by the elevator maintenance personnel, so as to achieve the purpose of electronic supervision of elevator maintenance. The elevator maintenance based on dynamic two-dimensional code The method of securing electronic supervision includes the following steps:

Step S300, randomly generate an encryption key when the predetermined time comes, and record the generated encryption key. Wherein, this step is specifically: when the predetermined time arrives, obtain the current system time, and store the current system time as an encryption key.

Step S301, encrypt the pre-stored elevator registration code according to the generated encryption key and a predetermined encryption algorithm to obtain the ciphertext of the elevator registration code.

Step S302, generate elevator dynamic registration code information according to the elevator registration code ciphertext, elevator registration code plaintext and elevator maintenance electronic supervision server website, and push the elevator dynamic registration code information to the intelligent display device installed in the elevator car to Make the intelligent display device generate and display the two-dimensional code picture according to the dynamic registration code information of the elevator and the preset two-dimensional code coding algorithm.

Step S303, receiving the maintenance start request information transmitted by the maintenance acquisition device carried by the elevator maintenance personnel, and using the predetermined encryption algorithm and the stored encryption key to decrypt the maintenance start request information to obtain the decrypted maintenance start Request information, wherein the maintenance start request information is generated by the maintenance acquisition device by scanning and analyzing the two-dimensional code picture displayed on the smart display device, and the maintenance start request information includes the ciphertext data of the elevator registration code and the equipment type corresponding to the maintenance acquisition device code.

Step S304, when it is judged that the decrypted maintenance start request information corresponds to the stored elevator registration code, generate maintenance confirmation information, and provide the maintenance confirmation information to the maintenance acquisition device, so that the elevator maintenance personnel can start to check the elevator Perform maintenance operations.

Step S305, receiving the passenger query information generated by the passenger scanning the QR code picture displayed on the smart display device through the mobile phone.

Step S306, providing the stored elevator safety inspection information corresponding to the plaintext data of the elevator registration code to the passenger's mobile phone according to the passenger's query information, so that the passenger can understand the maintenance situation of the elevator. Among them, the elevator safety inspection information is generated by the elevator maintenance electronic supervision server after receiving the maintenance end confirmation information provided by the maintenance acquisition device. The elevator safety inspection information includes elevator equipment code, service number, maintenance unit, maintenance telephone , inspection unit, inspection personnel, next inspection date.

Claims (8)

1. based on an elevator maintain and protection electric monitoring system for dynamic two-dimension code, it is characterized in that: comprise elevator maintain and protection electronic monitoring server, the intelligent display device be arranged in lift car, the repair and maintenance harvester that carried by elevator maintain and protection personnel;

Elevator maintain and protection electronic monitoring server is used for the stochastic generation when the schedule time arrives and encrypts secret key, and the secret key of encryption that record generates, be encrypted to obtain elevator registration code ciphertext to the elevator registration code prestored according to the secret key of encryption generated and predetermined cryptographic algorithm, according to elevator registration code ciphertext, elevator registration code plaintext and elevator maintain and protection electronic monitoring server network address produce the code information of elevator dynamic registration, and the code information of elevator dynamic registration is pushed to intelligent display device, the repair and maintenance that elevator maintain and protection electronic monitoring server also transmits for receiving repair and maintenance harvester start solicited message, and adopt described predetermined cryptographic algorithm and encryption secret key pair repair and maintenance to start solicited message to be decrypted and to obtain deciphering repair and maintenance and start solicited message, judge deciphering repair and maintenance start solicited message corresponding with the elevator registration code of storage time, produce repair and maintenance confirmation, and repair and maintenance confirmation is supplied to repair and maintenance harvester, start to make elevator maintain and protection personnel to carry out repair and maintenance operation to elevator,

Intelligent display device receives the code information of elevator dynamic registration, and produce corresponding two-dimension code image data according to the code information of elevator dynamic registration and default Quick Response Code encryption algorithm, and the two-dimension code image corresponding according to the display of two-dimension code image data, wherein two-dimension code image data comprise elevator registration code encrypt data, elevator registration code clear data, elevator maintain and protection electronic monitoring server website data;

Repair and maintenance harvester obtains two-dimension code image for responding elevator maintain and protection personnel to the two-dimension code image scan operation that intelligent display device shows, and resolve to obtain terraced registration code encrypt data to the two-dimension code image obtained according to the Quick Response Code encryption algorithm prestored, elevator maintain and protection electronic monitoring server website data, and start solicited message according to elevator registration code encrypt data and default device type code generation repair and maintenance, and according to elevator maintain and protection electronic monitoring server website data, repair and maintenance are started solicited message and be supplied to elevator maintain and protection electronic monitoring server, repair and maintenance harvester is also for receiving the repair and maintenance confirmation that elevator maintain and protection electronic monitoring server provides, start to make elevator maintain and protection personnel to carry out repair and maintenance operation to elevator.

2. as claimed in claim 1 based on the elevator maintain and protection electric monitoring system of dynamic two-dimension code, it is characterized in that: elevator maintain and protection electronic monitoring server is used for when the schedule time arrives, obtain present system time, current time in system is stored as the secret key of encryption, is encrypted to obtain elevator registration code ciphertext to the elevator registration code prestored according to the current time in system of recording and predetermined cryptographic algorithm.

3. as claimed in claim 1 or 2 based on the elevator maintain and protection electric monitoring system of dynamic two-dimension code, it is characterized in that: intelligent display device expressly generates elevator safety checking information display interface data message according to the elevator registration code in the code information of elevator dynamic registration, and elevator safety checking information display interface data message is shown, the elevator safety checking information display interface that two-dimension code image is superimposed upon display by intelligent display device shows, and two-dimension code image is positioned at the lower right corner of elevator safety checking information display interface.

4. as claimed in claim 1 based on the elevator maintain and protection electric monitoring system of dynamic two-dimension code, it is characterized in that: repair and maintenance harvester is also for responding terraced repair and maintenance personnel repair and maintenance complete operation, produce repair and maintenance according to elevator registration code encrypt data and default device type code and terminate comformed information, and according to elevator maintain and protection electronic monitoring server website data, repair and maintenance are terminated comformed information and be supplied to elevator maintain and protection electronic monitoring server, elevator maintain and protection electronic monitoring server receives after repair and maintenance terminate comformed information, produce elevator safety checking information, elevator safety checking information comprises lift facility code, use numbering, repair and maintenance unit, repair and maintenance phone, Inspection Unit, inspector, date of survey next time.

5. as claimed in claim 4 based on the elevator maintain and protection electric monitoring system of dynamic two-dimension code, it is characterized in that: elevator maintain and protection electronic monitoring server is also for receiving the two-dimension code image and the passenger's Query Information produced that passenger shown by mobile telephone scanning intelligent display device, and according to passenger's Query Information, the elevator safety checking information corresponding with elevator registration code clear data stored is supplied to the mobile phone of passenger, understand elevator maintain and protection situation to make passenger.

6., based on an elevator maintain and protection electronic monitoring method for dynamic two-dimension code, it is characterized in that, comprise the following steps:

When the schedule time arrives, stochastic generation encrypts secret key, and the secret key of encryption that record generates;

Be encrypted to obtain elevator registration code ciphertext to the elevator registration code prestored according to the secret key of encryption generated and predetermined cryptographic algorithm;

The code information of elevator dynamic registration is produced according to elevator registration code ciphertext, elevator registration code plaintext and elevator maintain and protection electronic monitoring server network address, and the code information of elevator dynamic registration is pushed to the intelligent display device be arranged in lift car, produce two-dimension code image to make intelligent display device according to the code information of elevator dynamic registration and default Quick Response Code encryption algorithm and show;

Solicited message receiving the repair and maintenance of the repair and maintenance harvester transmission of being carried by elevator maintain and protection personnel, and adopt the encryption secret key pair repair and maintenance of described predetermined cryptographic algorithm and storage start solicited message be decrypted obtain deciphering repair and maintenance start solicited message, wherein repair and maintenance start the two-dimension code image scanning parsing generation that solicited message is shown intelligent display device by repair and maintenance harvester, and repair and maintenance start solicited message and comprise elevator registration code encrypt data, the device type code corresponding with repair and maintenance harvester;

Judge deciphering repair and maintenance start solicited message corresponding with the elevator registration code of storage time, generation repair and maintenance confirmation, and repair and maintenance confirmation is supplied to repair and maintenance harvester, starts to make elevator maintain and protection personnel to carry out repair and maintenance operation to elevator.

7. as claimed in claim 6 based on the elevator maintain and protection electronic monitoring method of dynamic two-dimension code, it is characterized in that: when the schedule time arrives, obtain present system time, the current time in system is stored as the secret key of encryption.

8., as claimed in claim 7 based on the elevator maintain and protection electronic monitoring method of dynamic two-dimension code, it is characterized in that, further comprising the steps of:

Receive the two-dimension code image that passenger is shown by mobile telephone scanning intelligent display device and the passenger's Query Information produced;

According to passenger's Query Information, the elevator safety checking information corresponding with elevator registration code clear data stored is supplied to the mobile phone of passenger, to make passenger understand elevator maintain and protection situation, elevator safety checking information comprises lift facility code, use numbering, repair and maintenance unit, repair and maintenance phone, Inspection Unit, inspector, date of survey next time.