CN104495545B - 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 the 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 picture 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: elevator maintenance electronic supervision server 20, time judgment unit 21, 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 A service unit 26 , an intelligent display device 40 , and a maintenance collection device 30 .

detailed description

Please refer to Fig. 1 and Fig. 2 at the same time, the elevator maintenance electronic supervision system based on the dynamic two-dimensional code includes the elevator maintenance electronic supervision server 20, the intelligent display device 40 installed in the elevator car, and the elevator maintenance staff. Protect collection device 30. The elevator maintenance electronic supervision server 20 communicates with the intelligent display device 40 and the maintenance collection device 30 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 website of the elevator maintenance electronic supervision server, and pushes the elevator dynamic registration code information to the intelligent display device 40; the elevator maintenance electronic supervision The server 20 is also used to receive the maintenance start request information sent by the maintenance collection device 30, 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 30, 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 collection device 30. 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 40 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, 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. When judging 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 22, and the 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 40 that establishes a communication connection with the elevator maintenance electronic monitoring 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 30, 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 acquisition device 30, so that the elevator maintenance personnel start to perform maintenance operations on the elevator; after the elevator safety inspection information generation unit 25 receives the maintenance end confirmation information provided by the maintenance acquisition device 30, 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 30 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 30, The public mobile phone accesses the webpage according to the URL, and the elevator maintenance electronic supervision server 20 obtains the required information according to the access request provided by the maintenance collection device 30 and the public mobile phone, and the above-mentioned functional units complete the information processing.

The intelligent display device 40 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 40 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 40 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 40 runs a group of electronic monitoring tasks for elevator maintenance at the intelligent display device end. After the computer application program, the smart display device 40 is made to complete the above functions.

The maintenance acquisition device 30 is used to obtain the two-dimensional code picture in response to the scanning operation of the elevator maintenance personnel on the two-dimensional code picture displayed by the intelligent display device 40, 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 and 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 collection device 30 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 30 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 30 is mainly an intelligent electronic device composed of hardware such as a communication module, CPU, memory, circuit board, display, and a camera. After maintaining the computer application program of the electronic supervision task, the maintenance collection device 30 is made to complete the above-mentioned functions. For example, the maintenance collection device 30 can be a smart phone, and the maintenance collection device 30 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. a kind of elevator repair and maintenance electric monitoring system based on dynamic two-dimension code it is characterised in that：Including elevator repair and maintenance electronics prison Pipe server, the intelligent display device being arranged in lift car, the repair and maintenance harvester being carried by elevator repair and maintenance personnel；

Elevator repair and maintenance electronic monitoring server is used for random generation the when arriving the scheduled time and encrypts key, and records adding of generation Close key, is encrypted to obtain electricity to the elevator registration code prestoring according to the encryption key generating and predetermined AES Terraced registration code ciphertext, according to elevator registration code ciphertext, elevator registration code plaintext and elevator repair and maintenance electronic monitoring server Network address produces elevator dynamic registration code information, and elevator dynamic registration code information is pushed to intelligent display device, elevator The repair and maintenance that repair and maintenance electronic monitoring server is additionally operable to receive the transmission of repair and maintenance harvester start solicited message, and using described predetermined AES and encryption secret key pair repair and maintenance start solicited message be decrypted acquisition deciphering repair and maintenance start solicited message, judge Go out to decipher repair and maintenance start solicited message corresponding with the elevator registration code of storage when, produce repair and maintenance confirmation, and by repair and maintenance Confirmation is supplied to repair and maintenance harvester, so that elevator repair and maintenance personnel start to carry out repair and maintenance operation to elevator；

Intelligent display device receives elevator dynamic registration code information, and according to elevator dynamic registration code information and default two Dimension code encryption algorithm produces corresponding two-dimension code image data, and according to two-dimension code image data display corresponding Quick Response Code figure Piece, wherein two-dimension code image data include elevator registration code ciphertext data, elevator registration code clear data, elevator repair and maintenance electricity Sub- supervision server website data；

Repair and maintenance harvester obtains for responding the two-dimension code image scan operation that elevator repair and maintenance personnel show to intelligent display device Take two-dimension code image, and according to the Quick Response Code encryption algorithm prestoring, the two-dimension code image obtaining is parsed to obtain elevator note Volume code ciphertext data, elevator repair and maintenance electronic monitoring server website data, and according to elevator registration code ciphertext data and pre- If device type code produce repair and maintenance and start solicited message, and according to elevator repair and maintenance electronic monitoring server website data by repair and maintenance Start solicited message and be supplied to elevator repair and maintenance electronic monitoring server, repair and maintenance harvester is additionally operable to receive elevator repair and maintenance electronics prison The repair and maintenance confirmation that pipe server provides, so that elevator repair and maintenance personnel start to carry out repair and maintenance operation to elevator.

2. the elevator repair and maintenance electric monitoring system based on dynamic two-dimension code as claimed in claim 1 it is characterised in that：Elevator is tieed up Protect electronic monitoring server to be used for, when arriving the scheduled time, obtaining present system time, using the current time in system as encryption Key store, according to record current time in system and predetermined AES the elevator registration code prestoring is encrypted with Obtain elevator registration code ciphertext.

3. the elevator repair and maintenance electric monitoring system based on dynamic two-dimension code as claimed in claim 1 or 2 it is characterised in that：Intelligence Can display device be shown according to the elevator registration code plaintext generation elevator safety checking information in elevator dynamic registration code information Show interface data information, and elevator safety checking information display interface data message is shown, intelligent display device is by Quick Response Code Picture is superimposed upon and shows on the elevator safety checking information display interface of display, and two-dimension code image is located at elevator safety checking information The lower right corner of display interface.

4. the elevator repair and maintenance electric monitoring system based on dynamic two-dimension code as claimed in claim 1 it is characterised in that：Repair and maintenance are adopted Acquisition means are additionally operable to respond terraced repair and maintenance personnel's repair and maintenance and complete to operate, according to elevator registration code ciphertext data and default equipment class Type code produces repair and maintenance and terminates determination information, and according to elevator repair and maintenance electronic monitoring server website data, repair and maintenance is terminated to determine Information is supplied to elevator repair and maintenance electronic monitoring server, and elevator repair and maintenance electronic monitoring server receives repair and maintenance and terminates determination information Afterwards, produce elevator safety checking information, elevator safety checking information includes lift facility code, using numbering, repair and maintenance unit, dimension Protect phone, Inspection Unit, reviewer, the next date of inspection.

5. the elevator repair and maintenance electric monitoring system based on dynamic two-dimension code as claimed in claim 4 it is characterised in that：Elevator is tieed up Protect electronic monitoring server and be additionally operable to receive passenger and pass through the mobile phone scanning two-dimension code image that shows of intelligent display device and produce Passenger's Query Information, and according to passenger's Query Information will store elevator safety corresponding with elevator registration code clear data Checking information is supplied to the mobile phone of passenger, so that passenger understands elevator repair and maintenance situation.

6. a kind of elevator repair and maintenance electronic monitoring method based on dynamic two-dimension code is it is characterised in that comprise the following steps：

When arriving the scheduled time, random generation encrypts key, and records the encryption key of generation；

According to the encryption key generating and predetermined AES, the elevator registration code prestoring is encrypted to obtain elevator Registration code ciphertext；

According to elevator registration code ciphertext, elevator registration code, in plain text and elevator repair and maintenance electronic monitoring server network address produces elevator Dynamic registration code information, and elevator dynamic registration code information is pushed to the intelligent display dress being arranged in lift car Put, so that intelligent display device produces Quick Response Code figure according to elevator dynamic registration code information and default Quick Response Code encryption algorithm Piece simultaneously shows；

Solicited message receiving the repair and maintenance of repair and maintenance harvester transmission being carried by elevator repair and maintenance personnel, and using described predetermined AES and storage encryption secret key pair repair and maintenance start solicited message be decrypted acquisition 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 to intelligent display device by repair and maintenance harvester, Repair and maintenance start solicited message and include elevator registration code ciphertext data device type code corresponding with repair and maintenance harvester；

Judge decipher repair and maintenance start solicited message with storage elevator registration code corresponding when, generation repair and maintenance confirmation letter Breath, and repair and maintenance confirmation is supplied to repair and maintenance harvester, so that elevator repair and maintenance personnel start to carry out repair and maintenance operation to elevator.

7. the elevator repair and maintenance electronic monitoring method based on dynamic two-dimension code as claimed in claim 6 it is characterised in that：Predetermined When time arrives, obtain present system time, using the current time in system as encryption key storage.

8. the elevator repair and maintenance electronic monitoring method based on dynamic two-dimension code as claimed in claim 7 is it is characterised in that also include Following steps：

Receive passenger's Query Information that passenger is scanned, by mobile phone, the two-dimension code image that intelligent display device shows and produced；

According to passenger's Query Information, the elevator safety checking information corresponding with elevator registration code clear data storing is provided To the mobile phone of passenger, so that passenger understands elevator repair and maintenance situation, elevator safety checking information includes lift facility code, using volume Number, repair and maintenance unit, repair and maintenance phone, Inspection Unit, reviewer, the next date of inspection.