Development status of vehicle sensor market
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Three major powers drive the growth of the automotive sensor market
In recent years, China's automotive electronics market has maintained a high-speed growth trend. The automotive industry continues to develop rapidly, the pace of upgrading automotive products is accelerating, and consumer demand is constantly tilting toward automotive electronics, becoming the “troika†that drives the growth of the automotive electronics market. Nowadays, the domestic automotive electronics market is showing a good momentum of development. The popularity of traditional automotive electronics is increasing, emerging automotive electronics are beginning to spread, automotive products are accelerating, and the share of automotive electronics in the overall cost of automobiles continues to increase. According to statistics from authoritative institutions, in 2011, China's automotive sensor market reached 10.53 billion yuan; by 2014, the market size has reached nearly 13 billion yuan, achieving steady growth. In particular, the growth of passenger car production in China will drive the growth of the automotive sensor market.
The market is occupied by foreign capital
The information required by the car, such as the running state of the vehicle, the driving control state, the vehicle control situation, the operating environment, the abnormal state, etc., are mostly obtained by sensors. As an important source of information for automotive electronic control systems, automotive sensors are widely used in automotive engine management, power drive and safety and comfort systems. The number and level of technology of the sensors also determine the level of modern automotive control systems. It is the "probe" of the electronic control system. The more it is used, the more comprehensive the electronicization of the car and the higher the degree of automatic control.
It is understood that there are currently dozens of sensors installed on a domestic ordinary family car. The number of sensors on a luxury car is as many as two hundred or more, and its usage is increasing with the development of automobile manufacturing.
However, due to the low overall level of the domestic automotive sensor industry, a variety of sensors, especially high-level automotive sensors, still rely on imports. The sensor market is dominated by international component giants such as Siemens, Bosch and Honeywell, while the domestic automotive sensor industry is dependent on the slow development of the automotive instrumentation/instrumentation industry.
Low starting level of domestic start-up
Domestic automotive sensor production began in the 1980s. Due to the late start-up time, until now, the serialized and supporting industrial system is still not perfect.
At present, some manufacturers and foreign advanced enterprises use joint ventures to introduce some advanced technologies and gradually develop and grow, but most enterprises are still in a situation of low profit, single product, low technical level and poor reliability. Therefore, most of the automotive sensor products produced by domestic enterprises can only meet the matching needs of small-volume and low-level models, and the high-level automotive sensors used in many mass-produced cars, light-duty vehicles and some trucks rely on imports. It is reported that the annual import of high-performance automotive sensors is as high as 500,000 sets.
Compared with similar foreign products, China's automotive sensor products have a level difference of more than 10 years. There are many electromagnetic or Hall-type sensing methods for crankshaft position and vehicle speed sensors produced by domestic enterprises. There are problems such as low accuracy, poor decomposition ability, low signal accuracy, and weak anti-interference. Adopting photoelectric type, effectively avoiding the above drawbacks.
In addition, the trend toward miniaturization, multi-functionality, integration and intelligence of automotive sensors places higher demands on the adoption of new processes and the development of new materials. Magnetic sensors, gas sensors, force sensitive, heat sensitive, optoelectronic, laser and other sensors have emerged. The materials of sensors have also evolved from metals to semiconductors, ceramics, optical fibers and other materials. In these respects, the gap between domestic and foreign-funded enterprises is gradually widening.
In this regard, lack of market, lack of research and development funds, lack of new technology, the three mutually restrict each other, creating a vicious circle, the disadvantages of domestic enterprises are increasingly serious.
Price advantage is not obvious
Domestic sensor manufacturers can't get up, the cost can't be pressed down, and it is too difficult to contact the OEM.
The traditional concept of “winning at a low price†has long been impractical in the automotive sensor industry. The emphasis on improving the cost performance of foreign companies has made the price gap of similar products gradually smaller. In contrast, the OEM is naturally more willing to choose “imported goods†with high reliability and high technical level.
The current situation is that companies have been unable to set prices based on cost, but to determine costs based on market prices. At the price that the car factory can accept, it is squeezed to the end, leaving only a very small profit. As a result, some domestic sensor manufacturers are getting more and more sad.
The main application of vehicle sensors in automobiles
Braking System
Based on the consideration that the car must have a smooth and safe driving, taking the vehicle brake system as an example, in addition to using a large number of position, displacement and pressure sensors for the operation of the four wheels of the car, an explosion-proof die-lock brake system is generally installed (Anti In addition to the Lock Break System (ABS), most of the domestically produced vehicles have been equipped with Electronic Braking-pressure Distribution (EBD), which can greatly improve the stability of driving in bad weather conditions such as rainy weather and snow.
At present, the premium car model is further equipped with an Emergency Brake Assistance (EBA), which automatically detects the speed and strength of the driver when the brake pedal is pressed in an emergency, and determines whether the emergency braking force is Sufficient, automatically increase braking force and enhance performance as needed.
Comfortable and convenient driving is the driver's greatest driving pleasure.
The equipment and equipment of many high-end and luxury models tend to be humanized, not only highlighting their status status, but also improving driver safety, comfort and convenience. For example, with the driver's driving habits, height and weight, using the displacement sensor and micro-valve control, the seat and mirror can be adjusted to the driver's most comfortable state and recorded, and the best driving can be considered. Vision.
In addition, you can also use image, distance, ultrasonic or laser sensors, and then inform the road information through display, warning and other equipment, in order to help drivers reduce blind spots and visual field dead angles, maintain optimal distance and facilitate on-street parking control and reversing action.
In terms of ride comfort, sensors such as temperature, humidity, air volume and sunshine can also be used to automatically control the air conditioning system, maintain a comfortable thermostat system in the car, and use the photometric sensor to automatically control the brightness of the lamp, and also use raindrops and The defogging sensor automatically controls the front and rear windshield wipers to operate automatically.
Automatic detection and self-maintenance ensure airbag reliability
Airbags use micro-acceleration or micro-inertial sensors to monitor and measure. They must be turned on in real time and correctly at critical moments to maintain passenger safety, but the airbags are on standby for most of the time. The ECU of the airbag must have automatic detection and self-maintenance capabilities to continuously confirm the reliability of the normal operation of the airbag system, and ensure that the airbag can protect the driver in an instant action.
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Shenzhen Maintex Intelligent Control Co., Ltd. , https://www.maintexmotor.com