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1. Background and system introduction
Military physical training and appraisal standards are the common basic requirements of soldiers of different services and arms, and they are also an important prerequisite for completing their duties. But for a long time, the difficulty of multi-person training and the cumbersome multi-person assessment has been a difficult and long-standing problem.
Based on this, the military physical training assessment system using RFID technology solves the problems 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 examiner passes 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 related information of the timing chip label, that is, complete timing, lap counting, and counting functions. Competition results can be displayed in real time, and training organizers can view, edit, and print the results through the timing system software installed on the computer.
2. System content
- Regular inspections and evaluations of the military’s physical health
- Provide scientific training plan for military fitness training
- Intelligent appraisal and evaluation of military fitness training effects
- Provide scientific fitness exercise prescriptions for military personnel
- Establish a database for the assessment of the body’s physical fitness of the entire army
3. System composition and characteristics
- Background data processing middleware
- Visual entry and display module of personnel information
- Data storage, statistics, and export modules
- Data entry, including military name, gender, age, position number and other information
- Competition grouping and competition method, you can set the number of laps of the competition
- Data saving statistics export function
4. System hardware composition and products
- Motion timing system reader (trigger reading and writing integrated reader)
- Sports timing chip (electronic label)
- 125K ground induction coil antenna (low frequency cable antenna)
- Operating system server platform composition (sports timing lap counting system software)
Whenever a soldier carries a dual-frequency electronic tag through the timing coil on the runway, the 125K low-frequency activation antenna can immediately activate the dual-frequency electronic tag information, and the dual-frequency electronic tag actively sends data to nearby readers in real time, and the reader will read it again The received card data is uploaded to the connected computer. The computer obtains the relevant information of the athlete and records the corresponding time when passing, and uses special software to perform a series of processing on the information. The start time of running can be collected by the “timing start” button drawn by the reader and uploaded to the computer back-end system software. The back-end system software corresponds the collected start time and card information with the corresponding athlete information, and counts the competition situation, so as to realize the running status. The purpose of automatic project timing.
The system lays a set of 125K ground-coil antennas at the end for the sports lap counting system.
When the dual-frequency sports timing chip tag carried by the military passes the timing carpet antenna, the carpet antenna sends the response signal of the received RFID tag to the reading head connected to it, and the reading head records the current time and related information of the tag, and it is complete Timing function. Competition results can be displayed in real time, and referees or training organizers can view, edit, and print the results through the timing system software installed on the computer.
Five, system advantages
High real-time: Once the tag in the field is triggered, the data will be uploaded immediately, and 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 humidity will not cause any impact on the system, and the robustness of the product has been strictly tested;
High real-time accuracy: The system has a timing accuracy of 20ms, uses GPS satellites for time service, synchronizes Beijing time, and has high time accuracy.
Convenient installation of equipment: The convenience of installation is fully considered during product design. 125K low-frequency and 2.45G dual-frequency integrated reading realizes accurate timing requirements. No other equipment is required. Card issuance and software can be used to realize mid- and long-distance running lap counting. application;
No crosstalk event occurs: When high-power microwave equipment of the same frequency or different frequencies is used at the same time, the product will flexibly hop frequency 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 recognition of multiple tags: each reader can recognize 200 cards in the reader area at the same time, no collision and no crosstalk;
Strong EMI and EMS capabilities, card transmission power is one-thousandth of the mobile phone transmission power, green and no danger of electromagnetic wave radiation. Will not conflict with Bluetooth, 802.11, and wireless local road networks;
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 stays in the same ground sensing coil area for a long time, the electronic tag is in a dormant state, which greatly reduces The power consumption of the electronic tag is increased, and the service life of the battery is prolonged;
Six, system hardware product introduction
1 Timing system reader
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 mode: dual polarization (which can meet the application of changing label orientation)
Antenna gain: 14dBi
Working frequency band: 2.4GHz, 125KHz
Power consumption standard: working power is milliwatt
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 time service
Timing accuracy: ±20 milliseconds
Storage space: Onboard 2M Byte, support 8G Micro SD card
Interface standard: RS232, RS485, Wiegand, RJ45, TTL, WiFi, GPRS, etc. optional
Expansion I/O: 3 channels of switch signal input and output
Power standard: DC 7.5～24V 800～3000mA
2 Timing chip label
Recognition distance: 0 ~ 100 meters adjustable
Recognition speed: 200 km/h
Recognition ability: 200 frames per second anti-collision performance
Recognition method: omnidirectional recognition
Variable gain: 0～3 levels can be selected on demand
Working frequency: 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: The average working power is microwatts
Service life: 1.5 years
Voltage detection: Low voltage can be warned by wireless or buzzer at the same time
Packaging characteristics: ABS+PC material, resistant to high-strength drop and vibration
Environmental characteristics: Working temperature -40℃ ～+85℃ Working humidity <95%
Reliability: Waterproof and dustproof, meeting the requirements of industrial environment
Appearance: Binaural Square
Size: 40×36×12 mm
Weight: 12g
Installation method: Add watch strap to wear
3 Timing carpet/induction coil
1) The dual-frequency motion timing induction coil needs to be connected to the dual-frequency reader to complete the timing function. When the timing induction coil receives the response signal from the dual-frequency timing chip tag, the reading head records the current time and the tag ID number. The timing induction coil can be used in various environments and is waterproof, and can be used for running, cycling, and ice and snow sports; the carpet is quite strong and durable.
2) The ground induction 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.), thereby affecting the reading distance. For this reason, a special auto-tuning circuit is included in the reading head to minimize this effect.
Seven, successful cases
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