Wiring duct,Cable Gland,Cable Tie,Terminals,RCCN

With the social and economic development, people's living standards have been greatly improved, and their purchasing power has also continued to increase. As a means of transport vehicles, more and more people are needed and purchased, and now go out to see all the cars on the road, and private cars as the main force, but also proved the popularity of the car. How to ensure the safety of vehicles, which is now everyone's attention, in which the automotive control circuit network is an important part of automotive safety, automotive wiring harness is the basis of the automotive control circuit network, which can correctly detect the car wiring harness is normal System to protect the safety of the vehicle has become a worthy topic of study. Nowadays, the automobile harness detection system in the automobile industry of our country is cheaper, but there are many shortcomings in speed, accuracy and efficiency. The automobile harness detection system in the foreign automobile industry has done a good job in these aspects, but it is expensive, Therefore, it is necessary to develop a suitable automotive wire harness detection system suitable for China's automobile industry, which has good speed, accuracy, high efficiency and good price.

1 car wiring harness and its detection system

With economic development, people have higher requirements on automobile parameters such as vehicle safety index, comfort level, displacement coefficient, etc., and a large part of these high requirements are realized and controlled through automotive wiring harness design , It can not be said that these high demands can be achieved without the automobile wiring harness. Automotive wiring harness narrow refers to the general term for all the lines in the car, which is composed of car circuit cable, their material is generally composed of conductive copper and non-conductive plastic. The generalized automotive wiring harness is connected to the line, the plug-in and touch panel, which form a unified part of the car line.

Nowadays, the automobile industry of our country adopts some older methods to detect the wiring harness, for example, the indicator lamp display, buzzer buzzer and vibration, etc. These methods are to judge whether the wiring harness is normal or not by light and sound Of the detection means more time-consuming, labor-consuming, and the accuracy of the inspection is also very low, resulting in missed or wrong car inspection occurs from time to time, seriously affecting the safety of vehicles, reducing the safety factor of people travel. On the other hand, the detection system of automobile wiring harness in foreign countries seldom shows the phenomenon of missed inspection or misjudgment. Their safety and function are more comprehensive, but their price is very expensive. The automobile industry in our country is hard to bear. Therefore, it is necessary to develop a set of automotive wire harness testing system that has its own characteristics of the automotive industry in our country, and is fast, accurate and efficient.

2 car harness detection system deficiencies

Automotive wiring harness to the car in a variety of complex electrical organically connected to form a car circuit, and car circuit is to ensure that the car can drive safely on the road the key, but this organic connection there are many problems, of which the most important are Open circuit, wiring error and short circuit these three issues. According to these three main problems, a car harness model with one of these three problems and a harness model without these three problems are respectively provided.

There is a problem with the open circuit model

Open circuit problem is simply broken line, input signal from the input, no signal output at the output. This problem is obviously very direct, but because of the other two factors, it is more difficult to determine if it is not handled by linear algebra.

There is a problem with wiring errors

Wrong wiring problems mainly say that many of the internal lines are in the form of a pair, and sometimes in the node one does not pay attention to put the two lines reversed, but this problem, the input signal at the input can be output The received signal is only anomalous when it is processed using linear algebra.

There is a short circuit problem model

Short circuit mainly refers to two situations: First, a short circuit between the line and the line, so that line and the line between the barrier, so prone to fire circuit is a very dangerous situation; the second line between the touch panel A short circuit has occurred due to overcurrent or poor touch panel material, both of which can result in a short circuit. That is, the input signal input, the output signal is not output.

No problem with the model

The so-called no problem model, that is, the input signal input, the output signal output, and the input and output signals are consistent and accurate.

3 car wiring harness detection system design ideas

Automotive inspection system design thinking is to keep up with the pace of development of the automotive industry, learn from the advanced experience of the automotive industry to meet the development needs of China's automobile industry, mainly from the following three considerations:

Speed

Automotive wiring harness detection system compared to the original detection methods must be faster, change the time-consuming detection methods used in time to stack out the test results previously accepted, it is absolutely unacceptable, so quickly get the test result is this test The system must have the function.

accuracy

Accuracy is a very important standard in the automotive wire harness inspection system, which is also a very basic standard. If a test system to detect things are inaccurate or the accuracy is very low, then the significance of this test system is not big. We need a high accuracy of the automotive wiring harness detection system, so that the accuracy is high, there will be no car missed or wrong phenomenon, to protect the safety of the car and improve the safety factor of travel.

With the speed and accuracy of the front of the protection, to be qualified to talk about efficient. In today's world, time is the era of money, asking time for efficiency and asking for time are the requirements of many corporate businesses. Then our car wiring harness testing system also need efficiency, with the previous method of testing i Taiwan required the same time as the current test 2, and the test results of 2 more accurate, which is efficient, which is more perfect Automotive wiring harness testing system.