this paper describes the sense coil in the parking lot management system role, and the laying of the coil requirements.
vehicle detector to sense coil is an important car park management system components, which directly affect the stability of work of system performance, so the production of a sense coil is engineering the installation process is very important part of the work. it is working together with the vehicle detector, mainly to prevent the falling pole smashed cars.
before making sense coil consider the following points:
1, around 50 cm range can not have a lot of metal, such as manhole covers, storm water ditch cover and so on.
2, within 1 m around not more than 220v power supply line.
3, making multiple coil, the coil and the coil is greater than the distance between the 2 meters, otherwise it will interfere with each other. cutting sense coil slot
drawing on the road in accordance with good planning sense coil dimensions of lines, lines with the road cutting machine by cutting a square coil slot, requires:
1, the parking lot in the sense coil size is generally 1.8 m wide, 1.2 meters long or so,
2, cutting the corner chamfer 10 cm x10 cm, cut at right angles to prevent the hard concrete coil.
3, the groove depth of 4 cm, slot width of 0.5 cm coil, the coil lead groove width of 1 cm, depth and width to be uniform, should be shallow to avoid suddenly deep suddenly, suddenly wide and suddenly narrow situation.
4, the cutting end of the tank can not have debris, especially not with a hard object, first rinse with water, then dried.
5, the coil lead to a sense of groove to be cut within the refuge to avoid the exposed lead on the road. laying a sense coil and coil slot cut good cleaning and drying, to promptly buried coil, to prevent debris falling into the tank.
follow these steps to create a sense coil:
1, the best lead in a clean groove at the bottom of the coil and 0.5 cm thick layer of sand, hard bottom edges to prevent the constant, daily cut wires.
2, select the appropriate coil line requirements: a sense of high-temperature silver wire laying, skin abrasion, high temperature, waterproof, fire wire, such as choice.
3, a clockwise direction in the coil slot into 4 to 6 turns (circles) wires, coil the larger the area, turn (turn) the fewer. wire into the slot should be loose, can not have stress, but also to a turn a zade pressed to the bottom.
4, the coil lead wire twisted clockwise into the lead tank, to remain in the refuge side outlet 1.5 m long thread.
5, coil and wire in the slot after compaction, preferably capped with 0.5 cm thick layer of sand, to prevent skin was heat melted the coil.
6, with the melting of the hard asphalt or epoxy has been placed in the coil and lead wire groove. after cooling and solidification of the casting surface will sink slot, continue pouring, so that repeated several times, until the tank after cooling and solidification of the casting surface flush with the pavement.
7, the test coil resistance and insulation resistance, verify that the coil is available.