How to Arrange the Ground Induction Coil in the Parking Lot and What Should Be Paid Attention to - T

For one in and one out parking lots, some manufacturers are equipped with four ground senses: entrance controller, entrance gate, exit controller and exit gate. Some manufacturers configure three ground sensors: entrance controller, entrance gate and exit gate. What's the difference between that extra sense of place and that one? What should be paid attention to when arranging the ground induction coil? Of course, there is a difference for more than one ground sense. Multiple ground senses at the exit can realize that the card can be read only when there is a car at the exit. If you don't need this function, you can save one ground sense and bury fewer coils.

If you have more imports and exports, you can save a lot of things during construction. Also, it mainly depends on the requirements. If there are such requirements, for example, card reading when there is a car and card swiping when the vehicle exit is detected, generally two to three coils are required. However, if Party A requires, it will be troublesome to install four. For the installation of three or four, tigerwong parking lot system manufacturers believe that there are three main points: 1. Look at the configuration.

If it is equipped with medium and short distance card reader, a ground induction coil can be saved at the outlet; If it is a remote card reader, of course, an additional coil should be added at the outlet to prevent guests from installing the card on themselves and misreading the card. 2. The image comparison of some companies is triggered by ground sense. Four coils are inevitable, or the automatic license plate recognition system triggers the camera distance by ground sense, and the recognition rate will be relatively high. 3. The simplest one in and one out only needs to be equipped with two coils, which are respectively used directly below the gate rod at the exit and entrance, and the general size is 2 * 1m; In some cases, one of the three coils is in front of the entrance controller to realize the automatic card spitting function. At the same time, when the vehicle is pressed on the ground sensor, press the card pick-up button to get out the card, which is called interlocking card issuing; While pressing the ground, there will be a voice level-1 LED display, which will prompt you to read or pick up the card at the same time. There are also four coils. The fourth coil is used near the export control machine. In addition to voice and led prompts, it can also realize the automatic card recovery function of temporary cards.

What should be paid attention to when arranging the ground induction coil? 1. Avoid damaged pavement and joints of concrete pavement. 2. There shall be no large amount of metal within 50cm around, such as well cover, rainwater ditch cover, etc. 3. There shall be no more than 220V power supply lines within 1m around. The voltage generated by the interference source interference coil in the coil layout position shall not exceed 2mV. Measurement method: lay the pre prepared coil flat on the road where the coil is arranged, and directly measure the voltage between the two terminals of the coil with the millivolt gear of the multimeter. There is no interference within 2mV. If it exceeds 2mV, it indicates that the coil has interference; In addition, the resistance at both ends of the coil can be directly tested, and the resistance shall not be greater than 10 ohms. 4. When the annular coil is placed on the reinforcement of reinforced concrete, the coil must be at least 5cm above the reinforcement, and the number of coil turns shall be increased by 1-2 turns. 5. The distance between two coils must be greater than the width of a single coil, and the number of turns of the two coils must differ by 1-2 turns (at least 20 twisted pairs per meter). The total circumference of each coil is between 30m and 50m, and 1 / 2 of the coil width is the height of the detection vehicle. 6. Since the vehicle triggers a count when it is completely pressed behind the two coils and leaves the first coil, the coil embedding place should be in the place where the vehicle is not easy to jam and the road is narrow. In places with low speed, large traffic flow and more car following phenomena, a deceleration belt shall be installed on the ground before the vehicle enters the coil to prevent counting error caused by car following, or the ground sensing detection method shall be set as coil a or coil B, and single coil counting shall be adopted. 7. Groove sealing accessories: 1) quick setting epoxy resin. Composition: epoxy resin polyamide resin diluent. 2) melted hard asphalt.

The asphalt grade is less than or equal to No. 55 (the market unit price is about 15 yuan per kilogram). 8. The lead of the coil shall be twisted in pairs clockwise (more than 20 times per meter) and put into the lead slot. When outgoing from the safety island or roadside handwell, a wire head of 1.5m long shall be reserved. The schematic diagram of lead twisted pair is as follows: 9. Clean the construction site. In order to maintain the coil, hard asphalt shall be poured on the pavement after the asphalt curing lags behind; Epoxy resin pouring can only be opened to traffic after the epoxy resin is completely cured. Tiger Wong parking management system has a professional technical team! If you have any questions about parking lot system, etc., welcome to consult and exchange.