RFID military physical training assessment timing lap system

1. Background and system introduction

Military physical fitness training and assessment standards are common basic requirements for soldiers of different services and arms, and they are also an important prerequisite for completing their jobs. However, for a long time, the difficulty of multi-person training and the cumbersome multi-person assessment have been difficult to solve and long-standing problems.

Based on this, the military physical training assessment system using RFID technology solves the problem of simultaneous training, assessment timing, lap counting, and counting of multiple people in running subjects such as 20 kilometers, 5 kilometers, 3000 meters, 5000 meters, and 400 meters obstacle races. When the Sports timing chip tag carried by the training and assessment personnel passes through the timing coil antenna, the timing coil antenna sends the received data signal of the RFID timing chip tag to the timing reader/writer connected to it, and the timing reader/writer records the current time. and the relevant information of the timing chip tag, that is, to complete the timing, lap counting, and counting functions. Competition results can be displayed in real time, and training organizers can view, edit, and print results through the timing system software installed on the computer.

2. System content

Conduct regular testing and evaluation of military personnel’s physical health status

Provide a scientific training plan for the physical fitness training of military personnel

Carry out intelligent comparison and evaluation of military personnel’s physical fitness training effects

Provide scientific fitness prescriptions for military personnel

Establish a physical fitness assessment database for all military personnel

3. System composition and characteristics

Background data processing middleware

Visualized player information entry and display module

Data storage, statistics, export module

Data entry, including military personnel’s name, gender, age, position number and other information

Competition groups and competition methods, you can set the number of laps in the competition

Data saving and statistics export function

4. System hardware components and products

Sports timing system reader/writer (triggered reading and writing integrated reader/writer)

Sports timing chip (electronic tag)

125K ground coil antenna (low frequency cable antenna)

Operating system server platform composition (sports timing and lap system software)

Whenever a soldier passes the timing coil on the runway with a dual-frequency electronic tag, the 125K low-frequency activation antenna can immediately activate the dual-frequency electronic tag information. The dual-frequency electronic tag actively sends data to a nearby reader in real time, and the reader then reads the information. The received card data is uploaded to the connected computer. The computer obtains the relevant information of the athlete, records the corresponding moment when passing, and uses special software to perform a series of processes on the information. The running start time can be collected by the "timing start" button triggered by the reader and writer, and uploaded to the computer backend system software. The backend system software will match the collected start time and card information with the corresponding athlete information, and statistics of the competition will be achieved, thereby realizing running control. The purpose of automatic project timing.

This system lays a set of 125K ground-sensing coil antennas at the end point for sports timing and lap counting systems.

When the dual-frequency motion timing chip tag carried by the soldier passes through the timing carpet antenna, the carpet antenna sends the received response signal of the RFID tag to the reading head connected to it. The reading head records the current time and the relevant information of the tag, that is, completion Timing function. Competition results can be displayed in real time, and referees or training organizers can view, edit, and print results through the timing system software installed on the computer.

5. System advantages

High real-time performance: Once the tag in the field is triggered, the data will be uploaded immediately. The software will process the timing information and statistics and save the time ranking information in the database;

Strong anti-interference: the human body, metal, dust, and moisture will not have any impact on the system, and the product's robustness has been rigorously tested;

High real-time accuracy: The system timing accuracy is 20ms, using GPS satellite timing, synchronized with Beijing time, and high time accuracy.

Convenient installation of equipment: The product is designed with the convenience of installation in mind. The integrated reading of 125K low frequency and 2.45G dual frequency achieves precise timing requirements. No need to install other equipment. The card is issued and combined with the software to achieve timing and lap counting for middle and long distance running. application;

No crosstalk events occur: When high-power microwave equipment of the same frequency or different frequencies is used at the same time, the product will flexibly jump frequencies to avoid interference sources;

Large data capacity: The card reader in the system uses the 2.45G frequency band as the main channel for data circulation, and the data communication rate is 2Mbits/S;

Simultaneous identification of multiple tags: Each card reader can identify 200 cards in the card reader area at the same time, without collision or crosstalk;

Strong EMI and EMS capabilities, the card’s transmission power is one thousandth of that of a mobile phone, and it is green and has no risk of electromagnetic wave radiation. There will be no conflict with Bluetooth, 802.11, and wireless local network;

Low power consumption and long life: the electronic tag will only send data when it enters the ground sensing coil trigger area. When it does not enter the ground sensing coil area or is in the same ground sensing coil area for a long time, the electronic tag is in a dormant state, which greatly reduces the cost. Reduces the power consumption of electronic tags and extends battery life;

6. Introduction to system hardware products

1 Timing system reader/writer

Recognition distance: 0 ~ 150 meters

Recognition speed: 200 km/h

Recognition ability: Recognize more than 500 labels at the same time

Recognition angle: Omnidirectional

Polarization method: dual polarization (can meet the application of variable label orientation)

Antenna gain: 14dBi

Working frequency band: 2.4GHz, 125KHz

Power consumption standard: Working power is milliwatt level

Communication mechanism: Based on HDLC time division multiple access and synchronous communication mechanism

Anti-interference: Channel isolation technology, multiple devices do not interfere with each other

Security: Encrypted calculation and security authentication to prevent link detection

Real-time clock: GPS automatic timing

Timing accuracy: ±20 milliseconds

Storage space: Onboard 2M Byte, supports 8G Micro SD card

Interface standards: RS232, RS485, Wiegand, RJ45, TTL, WiFi, GPRS, etc. optional

Expansion I/O: 3 switching signal inputs and 3 outputs each

Power supply standard: DC 7.5～24V 800～3000mA

2 Timing chip tags

Recognition distance: 0 ~ 100 meters adjustable

Recognition speed: 200 km/h

Recognition ability: 200 pictures/second anti-collision performance

Identification method: Omnidirectional identification

Variable gain: 0~3 levels can be selected as needed

Working frequency band: 2.45GHz, 125KHz

Communication rate: 250K

Communication mechanism: Based on HDLC time division multiple access and synchronous communication mechanism

Anti-interference: Channel isolation technology, multiple devices do not interfere with each other

Security: Encrypted calculation and security authentication to prevent link detection

Power consumption standard: average operating power is microwatt level

Service life: 1.5 years

Voltage detection: low voltage can be warned simultaneously through wireless or buzzer

Packaging characteristics: ABS+PC material, resistant to high-strength drops and vibrations

Environmental characteristics: Working temperature -40℃ ~ +85℃ Working humidity <95%

Reliability: Waterproof and dustproof, meeting the requirements of industrial environment

Appearance: double-eared square

Dimensions: 40×36×12 mm

Weight: 12g

Installation method: add a watch strap to wear

3. Timing carpet/induction coil

1) The dual-frequency motion timing induction coil needs to be connected to a dual-frequency reader and writer to complete the timing function. When the timing induction coil receives the response signal from the dual-frequency timing chip tag, the read head records the current time and tag ID number. The timing induction coil can be used in various environments and is waterproof. It can be used for running, cycling and ice and snow sports; the carpet is very strong and durable.

2) The ground sensing coil contains an independent induction loop (125kHz to activate and wake up the tag) and a receiving loop (2.45G to receive the tag response signal). Sometimes the resonant frequency of the loop will be affected by surrounding metal objects (such as reinforced concrete, water pipes, etc.), thus affecting the reading distance. For this purpose, a special auto-tuning circuit is included in the read head to reduce this effect to a minimum.