In order to effectively improve professional information on urban rail transit vehicle maintenance

To improve management level and on-site operation efficiency, it is necessary to combine RFID (Radio Frequency Identification)

Carry out corresponding applied research work on technology. Method: Safety management from on-site personnel

Management, unattended management of materials, dynamic management of tools, tooling, and rescue equipment, walking

High-voltage components inside and under the vehicle, cable temperature monitoring, and the entire life cycle of vehicle components

In terms of period management and other aspects, the current professional operation of urban rail transit vehicle maintenance is summarized.

"Pain points" in the operation management process. Briefly describes the working principle of RFID technology

management and technical characteristics, as well as professional informatization of vehicle maintenance based on RFID technology

The composition of the platform is introduced in detail, and the personnel monitoring subsystem in the application layer of the platform is introduced in detail.

system, unattended material subsystem, dynamic management subsystem for tools, tooling, and rescue equipment

system, temperature monitoring subsystem, and vehicle life cycle history management subsystem

system. From the aspects of electronic label selection and installation, reducing electronic label installation costs, etc.

This paper introduces the relationship between RFID technology and its application in the information construction of vehicle maintenance profession.

key problem. Results and conclusions: RFID technology can be well applied to urban rail transit

In the road transportation vehicle maintenance major, it provides personnel safety management, material management, and tool equipment

And provide support for equipment management, temperature collection, and vehicle life cycle resume construction.

Really achieve cost reduction and efficiency increase during the maintenance process, providing enterprises with digital transformation

help.

In the informatization construction of urban rail transit vehicles, RFID (radio

frequency identification) technology is not widely used, and there are still a large number of manual recordings

entry, manual search, manual measurement, manual identification and positioning, etc., research

The reason is that early RFID tags had poor resistance to metal and the shell

Weak protection capability, large size, low storage capacity, and no unified usage rules

Fan. With the development of technology, RFID tags have good resistance to

Metal capabilities, protection levels and service life are constantly increasing, and the volume is gradually increasing.

is shrinking, storage capacity is also increasing. In 2016, China also issued

GB/T 32829-2016 "Radio Frequency Identification for Equipment Inspection and Maintenance Process" was issued

Technical Application Specifications" [1]. Therefore, in the field of RFID technology, for

The vehicle maintenance major conducts systematic application research and designs corresponding

It is very necessary to manage the system and solve the "pain point" problems on site.

1. Current status of informatization construction of vehicle maintenance majors

At present, information construction in the vehicle maintenance profession has been based on

Ben carried out digital transformation of various processes and abandoned the original paper

quality documents, but there is still a lot of work required to manually identify, confirm,

Approval and recording cannot be truly automated or semi-automated.

The above problem is particularly obvious.

1. 1 On-site personnel safety management

Vehicle maintenance professionals are mainly found in parking lots and depots (with

(hereinafter referred to as "field section") to carry out work. The field section is characterized by its large area,

There are a large number of dangerous workplaces such as high-voltage and high-altitude platforms and level crossings.

It also has a boiler room, flammable product warehouse, material warehouse, parking lot and other important facilities.

point area. To ensure safety, operators must perform operations in the control center

Only after registering for construction and wearing corresponding labor protection supplies can you enter

enter. At present, workers mainly go through security guards when entering the work area.

People are managed. During the management process, people may queue up to log in.

Record, unplanned personnel mixing in, outsiders entering by mistake, and not bringing labor

protective equipment, etc. At the same time, due to the large area of the work area and the communication

Problems such as account instability and the inability to know the location of the operator immediately

placement, causing inconvenience to management.

1. 2 Unattended management of materials

Because there are many types and quantities of vehicle parts, there are many difficulties in material procurement and import.

It takes a lot of manpower to carry out inventory, collection, return and repair work day and night.

Uninterrupted management, while it is difficult for existing material management systems to achieve unmanned

On duty, you also need to register one by one when picking up, which affects the work efficiency and is relatively

It is difficult to trace and analyze the use of materials.

1. 3 Dynamic management of tools, tooling, and rescue equipment

There are many types and quantities of tools and tooling used in the vehicle maintenance profession.

Many, some tools also require regular metrological verification, which will generally be installed

Placing dedicated personnel for management is time-consuming and labor-intensive. When finishing a job, you can also

Tools may be left on site or lost due to personnel negligence, resulting in

causing safety hazards and property damage. At the same time, vehicle maintenance professionals often

It is also responsible for emergency rescue work such as flood prevention, snow prevention and vehicle re-railing. and execute

During emergency rescue operations, due to time constraints, problems such as missing or wrong items may easily occur.

problem, affecting rescue efficiency.

1. 4 Temperature monitoring of running parts and high-voltage components and cables under the car

Some operating units will manually align the axes when the train returns to the depot.

Measure the temperature of components such as boxes, traction motors, etc., and respond to abnormalities in a timely manner

Check for hot spots. Some units will also paste them at key locations

Temperature sticker, but this sticker can only record the highest temperature when the temperature is too high

At this time, the corresponding parts are often damaged and cannot be found and processed in time.

problems and reduce losses.

1. 5 Full life cycle management of vehicle components

The vehicle maintenance major mainly performs inspections on urban rail transit trains.

Such as daily inspection, train inspection, monthly maintenance, regular maintenance, rack maintenance and balanced maintenance plan

inspection and maintenance work, as well as fault repair work on each system

do. During this process, the inspection records and maintenance of each system and each component are

Maintenance records, maintenance records, usage time, operating kilometers, installation location

and storage location and other life cycle history information are particularly important, but in

There are also certain difficulties in the process of recording resumes. The specific situations are as follows:

1) Real-time tracking of component-level kilometers. Most planned work is

It is related to the vehicle operating kilometers, but with the emergence of frame repairs and fault repairs,

This will result in some parts not being used on the original trains, causing the parts to

The operating mileage record is confusing, so it is easy to overuse new parts.

Maintenance or due repair of old parts.

2) The component installation location is updated. Turnover parts and faulty parts are in progress

After being outsourced or returned to the factory for repair, it is basically impossible to install it on the original vehicle. this

Sometimes, the vehicle history needs to be updated manually, which takes a lot of time and is not necessary.

Easy to manage.

3) Troubleshooting information. When performing fault repairs, the maintenance person

Students need to search through computers, review paper documents, and consult students over the phone.

Manufacturers and other colleagues on site to confirm possible occurrences

Historical fault information, maintenance information, production date, use of the faulty component

Kilometers used, usage time and maintenance records, etc., seriously affect the accident

Maintenance efficiency and quality are compromised, and problems such as missed repairs and incorrect repairs are prone to occur, resulting in

The same fault occurs frequently.

Application of RFID technology in vehicle maintenance professional information construction

The above problems are mainly caused by the current lack of mature, reliable, and convenient means of data collection, tracking, and recording. With the continuous development and maturity of RFID technology in 2023, in response to existing problems, the technical characteristics of RFID can be combined to build on the existing information platform. After each application layer subsystem recognizes the unique code and built-in information in the RFID tag, it transmits it to the existing information platform through the depot wireless network. The platform stores, modifies or displays the corresponding data according to different operating scenarios. .

2.2 Technical characteristics of RFID technology

Electronic tags produced based on RFID technology are highly durable and have a theoretical lifespan of more than 30 years. The COS (on-chip operating system) inside the electronic tag chip itself adopts a safe system design and is not easy to be counterfeited. Electronic tags are low in cost and small in size, and can be installed on the surface of any object in different ways. When electronic tags are working, they can identify high-speed moving objects at long distances and identify multiple targets at the same time, which is of great help in traceability, anti-counterfeiting and other aspects. Repeated reading and writing can be performed on the designated memory, and the reusability is high. The memory is mainly divided into 4 independent storage blocks: Reserved (reserved), EPC (electronic product code), TID (tag identification number) and user.

Jtspeedwork's electronic tags and card reader products have the above-mentioned technical characteristics and have achieved good results in practical applications. There are many types of electronic tags, which need to be distinguished from different perspectives such as energy supply type, data reading and writing type, signal frequency band and packaging type. Different types of electronic tags have their specific application scenarios. Only by fully understanding the characteristics of different types of electronic tags can we The correct type of electronic tag can be selected.

2.3 Personnel monitoring subsystem

RFID technology allows people carrying RFID tag cards to quickly pass through the identification channel without actively swiping the card or actively staying. During the planned movement of workers, the personnel monitoring subsystem will automatically authorize their passage. When workers are not authorized or do not carry labor protection supplies with RFID tags, the channel will sound audible and visual alarms, effectively preventing illegal and illegal personnel from entering, and also preventing personnel from leaving without registering. In this way, long queues and other situations can be avoided, and safe and efficient circulation of personnel can be achieved.

2.4 Material unattended subsystem

Through the comprehensive application of RFID technology, weighing shelves and video surveillance, all materials can be unattended. Among them, all large materials can be tracked in real time through RFID tags, and small materials such as bolts and sealing rings can be monitored in real time through weighing shelves. Purchasing personnel only need to identify the RFID tags when entering the warehouse or enter the quality of small materials, and then the corresponding materials can be put into the warehouse without manual inventory. Workers can use their personal ID (identification number) cards for authorization before picking up supplies, and they can pick up the supplies they need at will. At this time, the weighing shelf or electronic tag reader will automatically identify the type and quantity of the supplies taken, eliminating the need for Eliminates manual management. If unauthorized personnel take materials without authorization, the weighing shelves or electronic tag readers will immediately sound and light alarms and video recordings, making the material warehouse truly unattended.

The above is the application of RFID technology in the professional information construction of vehicle maintenance. Among them, Jtspeedwork's electronic tags and card reader products play an important role in this industry.