Automatic detection and control system of parking lot geomagnetic sensor

One. FE-1000MF one-dimensional magnetic field generating coil (vertical magnetic field)

FE-1000MF one-dimensional magnetic field generating coil is a new type of magnetic field coil independently developed by Hunan Yongyi Technology Co., Ltd. (application for invention patent). The coil can generate a large area of ​​uniform magnetic field in a limited space. Compared with the traditional square Helmholtz coil, the volume is reduced by 2-3 times, and it is suitable for installation in a limited space. The specific technical indicators of the coil are as follows:

1. Coil specification: side length 2.400m×2.400mm, the frame is made of aluminum alloy (one set of main coil and auxiliary coil);

2, winding coil enameled wire diameter: Ø2.0mm, temperature resistance class 140°;

3, Helmholtz coils can be placed left and right to generate a horizontal magnetic field (if you need to generate a vertical magnetic field, please declare);

4. Central magnetic field strength: -200uT～200uT;

5. Range of average and zone: 1000mm×1000mm×1000mm, uniformity is better than 1.0%;

6. ​​Corresponding magnetic field: When working at 6A constant current, the magnetic field is greater than 2.0Oe, and it can be used continuously under the maximum magnetic field condition (air flow environment).

Two, FE-2100 magnetic material automatic test system V1.0 technical description

The FE-2100 magnetic material automatic test system V1.0 is the assembly of the software and sampling part of all magnetic measurement and magnetic field generation test equipment of Hunan Yongyi Technology Co., Ltd., including the test software and data acquisition card prepared by C#, gradient magnetic field Control, acquisition, etc. The description of several important parameters of the relevant interface is as follows:

1. Background geomagnetic field (below): the magnetic field of the environment when the coil input current is zero;

2. Real-time sampling waveform (the figure below); the experimental magnetic field superimposed on the background magnetic field and the coil magnetic field, including the actual acquisition of current and magnetic field;

3. Real-time current waveform (below): the current control and acquisition required to simulate the magnetic field in 64 parking spaces;

4. Relative magnetic induction waveform (below): the absolute value of the magnetic field change excluding the background magnetic field;

5. Parking lot parking space detector simulation experiment report (below): Random magnetic field control test report on the reliability of magnetic induction probes, verifying the reliability of the entire management system.

Three, FE-2100SD program-controlled DC test power supply

1. Input: Single-phase AC 220V±20V, 10A;

2. Program-controlled DC constant current output, output current range: -8,000A~8.000A;

3. Output voltage range: -35V~35V;

4. Current uncertainty: 0.1%, stability is better than 0.05%;

5. Program control interface: USB, AD/DA

Four, 9200B single axis fluxgate magnetometer

The 9200B single-axis fluxgate magnetometer is produced by Shanghai Haizhang Electronic Technology Co., Ltd. The product is one of the more advanced products in China. It has been matched with our company's products for many years, the quality is relatively stable, and the price has a greater advantage than foreign products. .

1. Test range: 0~±199999nT, no range conversion required

2, accuracy: <±1% F.S.;

3. Display: 6-digit high-brightness LED display (or LCD display optional), display format "±199999" nT;

4, resolution: 10nT;

5. Noise: <10nT±1 word

6. ​​The accessory one-key reset function (the geomagnetic field can be directly deducted), which is convenient for testing the absolute value of the magnetic field;

7, with RS232 data interface.

V. Loading platform:

Designed according to the requirements of the demander, using non-magnetic aluminum alloy material design, 4 loading plates, each can carry 16 experimental sensors, and one experiment can complete the test of 64 sensors.

1. The parallelism between the stage plate and the magnetic field (or perpendicularity is better than 0.2º) to ensure the accuracy of the experimental magnetic field;

2. The carrier board is processed with 10mm thick bakelite, and the sensor device fixed station card is set to ensure the fixation of the experimental workpiece;

3. The fixed plate adopts aluminum alloy frame design, equipped with chute and stop structure, which is convenient for the installation of 4 test load plates.

Hunan Forever Elegance Technology Co.,Ltd has successively completed related magnetic field design and control projects for the gyro experimental platform of the National University of Defense Technology, the Shanghai Astronomical Observatory of the Chinese Academy of Sciences, and the Texas University of the United States. The company has developed a new technology in simulating large-scale uniform magnetic fields and controlling and measuring technologies. Step, has become a qualified enterprise in the development and design of such devices at home and abroad, and will promote and use products in more fields to benefit the industry.