Cut ground sensing coils usually require the use of some professional tools. Here are some commonly used tools:
1. Wire strippers: Wire strippers are tools used to remove insulation from wires. When cutting a ground sense coil, it may be necessary to strip some of the insulation from the wire in order to properly connect or install the coil.
2. Tweezers or flat-nose pliers: Tweezers or flat-nose pliers can be used to grip and hold the coil wires to ensure they are firmly connected together.
3. Twisting pliers: Twisting pliers are a special tool used to twist wires in the coil to connect the coil tightly.
4. Crimping Tool: The crimping tool is used to crimp the coil wire terminals to other components or equipment in the circuit. This guarantees a connsolid and stable connection.
5. Multimeter: A multimeter is a tool for measuring electrical parameters such as resistance, voltage and current. When you cut off the ground sense coil, you may need to use a multimeter to check the connections and test if the circuit is normal.
Please note that ground sense coils involve electrical work and circuit connections. If you do not have the relevant knowledge and skills, it is better to seek help or consult professionals. Proper use of the correct tools and equipment is essential to performing the job safely and efficiently.
Work flow chart of high-definition electronic police front-end system
1 Red light capture process
(1) At a red light. signal, when a motor vehicle presses the coil, the vehicle detector sends the first strigger signal to the police electronic processor, and the commercial processor sends the first capture signal to the high-definition network camera to take photos of the motor vehicle pressing on the parking line, as shown below: p>
(2) When the motor vehicle leaves the first coil and enters the second coil, the vehicle detector gives a second signal to the electronic police business processor, and the electronic police business processor sends to the high-definition network camera a second instant signal, takes a photo of the motor vehicle leaving the parking lane and continuing to move forward, as shown below:
(3) When the vehicle leaves the parking lane parking. second coil, the vehicle detector gives the third signal to the police electronic processor. The electronic police processor sends the third capture signal to the high challenge network cameranition to take photos of the motor vehicle continuing to advance, as shown below:
This process ensures that if the vehicle only crosses the line and does not continue to run the red light, the system Only one photo will be taken and one photo will not be used as a basis for punishment while being processed in the background. If a vehicle violates red light behavior, no matter whether it is driving at fast or slow speed, it can obtain comprehensive photos consistent with the red light behavior record of GA/T496-2009.
Corresponding to the three captured photos, the high-definition network camera will also produce high-definition dynamic video to further record the process of the motor vehicle passing the red light and provide strong support for illegal evidence collection.
2. Working principle of vehicle detector
Vehicle detection adopts detection methodground induction coil ion Among the various vehicle detection methods currently used, only the ground induction coil detection method can meet the requirements. requirements of greater than 95% catch rate of red light running and reverse driving requirements.
The vehicle detector maintains a stable magnetic field on the ground induction coil via the coil charger. When a vehicle passes, the magnetic field changes and the vehicle detector determines whether a vehicle has passed based on the passage. intensity of the change in the magnetic field.
The ground detection coil is made of high temperature resistant single-core multi-strand tin-plated sheathed cable, with a cross section of 1mm2, generally 4-5 turns, and the size of the coil generally measures 60 cm × 180 cm, buried between the parking line and the pedestrian crossing.
In the vehicle detection processPassing vehicles, the sensitivity of the ground detection coil can be adjusted to detect different types of vehicles, which can meet the needs of large vehicles, medium-sized vehicles and three passengers at the same time. -wheeled motorcycles. Car inspection.
3. Working principle of traffic light detector
Most traffic lights currently used at intersections are multi-phase traffic lights. Therefore, the signal detector will detect traffic lights separately. that every path must follow. For detection, the red light signal, green light signal and yellow flashing signal (AC 220V voltage signal) for going straight, turning left and right are respectively sent to the light signal detector in cooperation with the relationship logic enters. The signal light and track ground sensor coil can ensure that the system will not take anyphotos of vehicles passing through the ground sensor coil only when the red light is on. For example, if the vehicle passes the stop line during this time. when the red signal light disappears and yellow flashes, the system does not take photos.
4. Offsite Processing