Anti theft principle of engine
Automobile engine anti-theft logic: when the ignition switch is turned on, the key transponder forms the first information intersection with the anti-theft controller. The key and chip will meet each other with different identification codes. The anti-theft controller will not continue to communicate with ECU. The circuits of ignition system and fuel injection system remain open circuit, and the engine cannot be started. If the signals match, the anti-theft controller receives the verification request sent by the ECU, adds a 128 bit password according to the set 32-bit random code and the calculated 128 bit password, and the ECU will interact with the anti-theft controller. After the password is the same, the ECU anti-theft is released and can be started normally. Of course, engine anti-theft is not omnipotent. The decoder can be found in the market with less than a few thousand yuan, which also has hidden dangers.
The simple understanding is that the double-layer door locking mechanism inside and outside is not enough, even if you have the key to open the outside door in your hand. You need to talk with the person behind the door in "code language". If you answer correctly, he will open the door from the inside and double open the back door. And you'll have a code book. Every code is different. Engine anti-theft is like a guard employed for 7x24 hours. However, your code manual has been copied and used by others, which also has hidden dangers.
Types of automobile anti-theft locks
According to the technical principle, automobile anti-theft lock can be basically divided into three categories: mechanical anti-theft lock, electronic anti-theft alarm lock and networked anti-theft (positioning and tracking) system. The complexity of lifting the mechanical lock can no longer meet the existing technology, and the electronic anti-theft alarm only makes up for the lost. There are disadvantages in the anti-theft measures that are not integrated into the engine control system. For example, if a circuit breaker is added to the power supply line of the ignition coil, it is easy to find the line to bypass the circuit breaker; Or power off the anti-theft device. The anti-theft measures integrated into the ECU. If the anti-theft state is not removed, the ECU will refuse to work, and the engine will certainly not start. Compared with the rear anti-theft system, it is more safe and reliable.
Electronic automobile anti-theft lock
The electronic automobile anti-theft device can send out beeps, sirens, lights and other signals when thieves enter the car, which can scare off thieves and attract the attention of passers-by. There are many kinds of electronic anti-theft systems, which are specially equipped with a remote control. There are many such anti-theft products on the market, but few of them have passed the technical test. The installation of electronic anti-theft devices needs to change the line and damage the original vehicle circuit. If the vehicle has a spontaneous combustion accident, some insurance companies will refuse to pay compensation according to the reasons for installing anti-theft devices by themselves, which has to be paid great attention to. In addition, the Signal Jammer on the market can interfere with most electronic anti-theft devices, making the car lock invalid.
Network car anti-theft lock
Network car anti-theft device, that is, GPS, uses satellite positioning system to monitor the car. The principle is to input the vehicle information into the telephone card and install it in the GPS locator, and then install it in the hidden position in the vehicle, so that the position of the vehicle can be monitored in the whole process. If the car is stolen, the owner can know the specific location through mutual information through SIM card. At the same time, the GPS management terminal has good expansibility, which can realize remote oil cut-off, information feedback query and so on. With different functions and different prices, GPS anti-theft is more intelligent and active than electronic anti-theft device.
Oil circuit lock
Oil circuit lock is to connect an electronic switch after cutting the oil circuit cable, and use the key to control the on-off of the oil channel, or directly through chip induction to achieve the purpose of anti-theft. After locking, even if the car is decoded, the car cannot be started. However, the oil circuit lock needs to change the wiring of the car, which is inconvenient to operate. Moreover, the contacts of some inferior concealed locks will also have poor contact, and the engine may suddenly shut down during driving. This method is not recommended.
Mechanical anti-theft lock
Clutch brake lock (lockable brake or accelerator) is to lock and support the vehicle brake pedal or clutch pedal, so that it cannot be manipulated and prevent the vehicle from being stolen. The utility model is characterized in that the structure is simple and does not affect the interior decoration and beauty of the car. However, when the lighting is poor at night, it is difficult to lock. In addition, I personally won't insist on squatting down and using the key to open such a lock every time I get on and off. It's too inconvenient.
Wheel lock is a lock used outside the car body. Locking on the wheel can firmly lock the tire of the car and make the wheel unable to rotate to prevent the car from being stolen. The wheel lock is generally locked on the front wheel on the driver's side, which has more obvious deterrent force than the interior lock. I don't think it's convenient for people to use such a bulky lock, but I don't think it's easy for them to use it.
Gear lock is to use the gap between gear and handbrake to fix it with such equipment. This equipment can realize anti-theft function without damaging the original vehicle line. It is convenient to use, but its universality is poor. Not every model can provide a consistent gear lock. In addition, models facing electronic handbrake or foot brake have no effect.
Steering wheel lock, as the name suggests, is used to lock the steering wheel, which is the most convenient way of anti-theft. This kind of lock is also divided into three kinds, such as top hook lock and folding lock. Among them, baseball bat steering wheel lock is the most popular and cheap. It can also be used as a sharp weapon for self-defense. Parking can prevent car theft, and driving in the wilderness can also be swung by unscrupulous people.
Anti theft magnetic sheet
Full name of anti-theft magnetic sheet: the anti-theft and anti prying magnetic sheet of automobile lock is an automobile anti prying protection device that physically blocks the automobile key hole, absorbs the strong magnetic force of the anti-theft magnetic sheet into the eye of the automobile lock, and covers the lock cylinder (tightly stitched) to achieve the anti prying and anti-theft of the automobile lock. The device is applied to the violent anti prying and theft of the lock cylinder of the automobile lock hole. The device has a very good prevention effect on the violent prying and theft of the automobile lock.
Sickle from south to north to ensure that summer grain particles return to the warehouse
At present, wheat has gradually entered the mature stage, and China has successively opened sickles from south to north. All localities pay close attention to the fine summer harvest, summer planting and summer management, so as to ensure that the summer grain particles are stored in the warehouse and consolidate the foundation of grain production throughout the year.
Henan is the main wheat producing area in China. These two days, in Luozhuang Town, Nanyang City, where wheat matured earlier, the wheat harvest ushered in the "first sickle". Villagers said that although sowing was relatively late last year, due to sufficient rain and good soil moisture this year, and the management in the middle and late stage of wheat, the production capacity of each mu of land this year reached about 800 kg. In Chengdu Plain, Sichuan Province, wheat has entered the harvest season one after another.
In Jiujiang, Jiangxi Province, 60% of the 150000 mu of wheat harvest has been completed, and the output is predicted to increase by about 5% over last year; In Jinhua, Zhejiang Province, wheat farms have been sickling and harvesting in recent days.
This year, 14.4 million mu of wheat was sown in Shaanxi, mainly in Guanzhong Plain. At present, nearly 1000 cadres from agricultural and rural departments have come to the village to provide technical assistance and guidance, focusing on the monitoring and emergency control of diseases and pests mainly wheat stripe rust and scab.
At the same time, all localities have taken many measures to organize cross regional machine harvest operations and make every effort to ensure the smooth development of wheat machine harvest. In Suqian, Jiangsu Province, the agricultural and rural departments moved their services forward and adopted the method of on-site annual inspection and on-site handling to handle the cross regional operation permit for the agricultural machinery operators working across the region; Xiangyang, Hubei, Handan, Hebei and other places have set up "green channels" for agricultural machinery transfer at the entrance and exit of expressways, and set up "three summer" agricultural machinery cross regional operation reception service stations to provide "one-stop services" such as nucleic acid and territorial registration for cross regional operators.
