With the increase of the number of vehicles, the requirements of the regional entrance and exit vehicle management system are also getting higher and higher. At present, the sensor of vehicle and personnel entrance and exit management is mainly used for vehicle and personnel entrance and exit management sensor. The camera is widely used, and the effect is stable in the environment with good light. However, at night, complex weather such as haze will affect the performance and make it difficult to work all day, which is mainly used for gate triggering applications. The infrared reflector sensor consists of a pair of transceiver devices installed on both sides of the gate. The installation requires accurate alignment, and the layout and wiring are complicated. The main problem is being easily obscured by objects (small animals, branches, etc.). Cause false trigger.
Another widely used sensor is the geomagnetic coil. Its essence is a multi-turn coil, forming a magnetic field, according to the electromagnetic principle of induction vehicle entry. When installing this sensor, it is necessary to damage the road surface and bury the geomagnetic coil underground, which brings inconvenience to the maintenance. At the same time, the detection of large vehicles by geomagnetic coil is not stable enough to distinguish between people and vehicles, and the service life is short.
As a kind of all-weather operation, gate induction radar module is more and more popular among users because of its simple installation, ability to distinguish between people and vehicles, low trigger rate, not affected by weather and environment, and long service life. The channel gate radar developed by Microelectronics based on 5.8GHz/24GHz radar SoC has a simple hardware design, which shorens the development cycle and reduces costs for customers. In addition to the main control chip, only the power chip is needed, FLASH crystal vibration can complete the whole system function. Less system equipment, no need for high frequency plate, reduce the size and cost.
The gate induction radar module is 12mm*12mm in size, with four transmitting channels and four receiving channels, and supports up to four ×4MIMO. The maximum continuous sweep frequency band width supports 5GHz, which is the widest in the industry at present. Theoretical range resolution can reach 0.04 m and velocity resolution can reach 0.04 m/s.
As we all know, the application of 5.8GHz/24GHz MMW radar not only has a high requirement on the rationality of antenna design, but also because of the high requirement of antenna on the production process, the core technology is still controlled by a few enterprises, which affects the popularization of MMW radar. Gate induction radar module can be better applied to gate radar because it integrates the antenna which is difficult to design and produce into the chip package, which greatly reduces the difficulty and cost of radar development.
Using the gate radar application system, the implementation of the customer gate radar becomes very simple:
1. Use the radar development platform for installation and commissioning.
2. Refer to the suggested configuration parameters of gate radar, set registers and software with the help of software development tools, and further fine-tune on this basis to achieve the ideal effect.
3. In addition, two kinds of data output are provided, one is the original data before the Kaman filter, which the customer can develop their own clustering and tracking, and the other is the target data, which the customer can also use directly.
In the future, the gate induction radar module system will increase the logic judgment function, increase the function of interconnection with the gate, increase the adaptability of multiple scenes, further improve the accuracy of the gate radar detection, and provide customers with a more simple and convenient reference design platform.
