Are the chassis stiffeners (tie bars, top bars, etc.) useful?
First of all, the owner of the additional reinforcement will change the performance of the original car. Because, the vehicle stability performance is through the length of these components, thickness, installation point to achieve. Additional reinforcement will change the characteristics of the original parts, resulting in a change in vehicle performance. The second question is, will the performance of the vehicle become better or worse after the addition of additional reinforcers? The standard answer is: It could get better, it could get worse. Professional people can control the performance development to a better direction. For example, one of our colleagues changed the car by himself. He knows where the weakness of the original car is and naturally knows how to strengthen it. But if you don't know why you're making changes, then most of the time you're just making changes, which will do more harm than good! The cars you buy have been tested for hundreds of thousands of kilometers to ensure that there is no danger in the use of cars. That's what an engineer does in a car factory. The modified parts are not through strict performance testing and durability testing, the quality is not guaranteed, if the fracture and fall off in the process of use, it will bring life danger to the owner. Don't think that this is just a strengthening piece, broken and the original car's parts. Has it ever been considered that the mounting piece will break and get stuck in the ground, causing a serious traffic accident... To sum up, refitting is risky and operation should be cautious.
Therefore, it is the safest and best choice to choose the original parts of Zhuomeng (Shanghai) Automobile Co., LTD. You are welcome to inquire.
Reversing radar is a parking safety auxiliary device, which is composed of ultrasonic sensor (commonly known as probe), controller and display, alarm (horn or buzzer) and other parts, as shown in Figure 1. Ultrasonic sensor is the core component of the whole reversing system. Its function is to send and receive ultrasonic waves. Its structure is shown in Figure 2. At present, the commonly used probe operating frequency of 40kHz, 48kHz and 58kHz three kinds. Generally speaking, the higher the frequency, the higher the sensitivity, but the horizontal and vertical direction of the detection Angle is smaller, so generally use 40kHz probe
Astern radar adopts ultrasonic ranging principle. When the vehicle is put into reverse gear, the reversing radar automatically enters the working state. Under the control of the controller, the probe installed on the rear bumper sends ultrasonic waves and generates echo signals when encountering obstacles. After receiving the echo signals from the sensor, the controller carries out data processing, thus calculating the distance between the vehicle body and obstacles and judging the position of obstacles.
Reversing radar circuit composition block diagram as shown in figure 3, MCU (MicroprocessorControlUint) through the scheduled program design, control the corresponding electronic analog switch drive transmission circuit, ultrasonic sensors work. Ultrasonic echo signals are processed by special receiving, filtering and amplifying circuits, and then detected by the 10 ports of MCU. When receiving the signal of the full part of the sensor, the system obtains the nearest distance through a specific algorithm, and drives the buzzer or display circuit to remind the driver of the nearest obstacle distance and azimuth.
The main function of the reversing radar system is to assist parking, exit the reverse gear or stop working when the relative moving speed exceeds a certain speed (usually 5km/h).
[Tip] Ultrasonic wave refers to the sound wave that exceeds the range of human hearing (above 20kHz). It has the characteristics of high frequency, straight line propagation, good directivity, small diffraction, strong penetration, slow propagation speed (about 340m/s) and so on. Ultrasonic waves travel through opaque solids and can penetrate to a depth of tens of meters. When ultrasonic meets impurities or interfaces, it will produce reflected waves, which can be used to form depth detection or ranging, and thus can be made into a ranging system.
