What is an electronic dog? What is the role of electronic dogs? What is the principle of electronic dogs? Chinese editors lead you to understand what the electronic dog has a role in China ...
What is an electronic dog? What is the role of electronic dogs?
What is an electronic dog? What are the effects of electronic dogs? What is the principle of electronic dogs? Chinese editors lead everyone to understand what the electronic dog has a role in China
Electronic dogs, also known as driving safety early warning instruments, are a vehicle device, consisting of hardware systems and software systems, including radar, GPS positioning, central processor, and intelligent speed measurement early warning system.It is mainly to use GPS satellite positioning and radar signal retrieval to remind car owners in advance the existence of speed measuring equipment such as electronic eyes or speed radar to prevent fined and deducting points due to illegal regulations such as speeding.It is divided into ordinary electronic dogs, smart electronic dogs, cloud electronics, etc.
Full -frequency
Full -frequency Day is a type of car equipment produced with a large amount of radar speed measurement. The radar speed measuring instrument
It is based on the calculation of the receiving reflection wave frequency transition.The radar speed measuring instrument is widely used in urban transportation, mainly used to measure whether the car is super speed, divided into fixing and flowing. The fixed installation is generally installed on the bridge or crossroads (the number of fixed speed measurement is less).On the car.
Full frequency is a device that prompts whether there is a radar speed meter near the driver. It is installed in the car. By receiving the radar wave, it can detect whether there is a radar speed meter around a certain distance.During the exercise of the car, when the car is close to the radar speedometer, it will send a warning, and it is enough to hear the warning to slow down to normal levels of 2 or 300 meters.Full frequency can receive all frequency band radar signals. The main receiving parts are rarely produced in the mainland, mainly from Taiwan Province, or imports from the Philippines, South Korea and other imports. Each manufacturer has different focus on the frequency of radar signals.Good or bad.
GPS Da
About 80%of the cities in the world use the speed measurement of pressure coils. This speed measurement method is to bury the inductive coil on the road, and calculate the speed by calculating the vehicle through the coil time.There are also a small number of more advanced multi -lane continuous shooting speed measurement methods. These speed measurement methods do not launch radar waves. The first full -frequency radar cannot detect this electronic eye speed test.
This generates GPS Da. This kind of Da is not relying on the radar wave method to remind the speed. The principle of the GPS function work is: pre -preserved the latitude data with a fixed speed measurement point or a red light.Coordinates), triggers the alarm when the GPS positioning is close to the target point when the target point is scheduled.Combined with the electronic compass can be calculated and displayed the speed of the vehicle and the direction of the travel direction. There will be no distress that cannot be judged by the direction, and it can automatically mute when it is not overspeed.This type of product also contains a large amount of traffic information and life information, with the function of voice prompts, which is a good helper when driving.Cant play a role.
GPS Full Frequency
The combination of the functions of the first two categories of the GPS Full Frequency can not only accurately forecast the fixed radar speed measurement, but also predict the speed measurement of the flow, which comprehensively solves the shortcomings of the first two types of products.This can be divided into two types, one is integrated, the performance is relatively stable, the installation is relatively simple. The disadvantage is that it must be placed close to the wind glass, and the volume of the indoor machine is large.This product is more common in the market: Weica V6, T90, Prophet 606.
The other is more common is the split type. There is a wireless connection between the mainframe in the car and the radar machine under the front engine cover. Because the radar is separated from the GPS machine, the volume of the indoor machine can be made slightly, and it is not invalid.You dont have to be placed close to the wind glass, good concealment, which is conducive to anti -theft and anti -inspection, but the installation is a bit more troublesome. This is not a big problem. If you look at the manual, you should understand what is going on.I cant spend much money.
GPS navigation
Connect the map navigation with the reverse speed function to achieve a multi -machine.Most navigation map companies have also added a lot of speed measurement data to the navigation software. Ordinary navigators have GPS reaching functions. From the perspective of electronic dogs, it is GPS navigation.Many manufacturers combine the navigation and full -frequency Dayson to achieve navigation+fixed+flow tri -in -one function.
Working principle 1. The radish machine is warned by the embedded transmitter.
The manufacturer bury the wireless microwave transmitter where the early warning is needed. This wireless transmitter has only a fixed frequency band.At the same time, it can only receive the receiver of this band.Every time consumers buy electronic dogs, after receiving the microwave signal, the machine receives the information of the preset inside to prompt the relevant alarm information.
2. GPS machines are warned in advance by collecting coordinates by collecting coordinates.
It is also the manufacturers coordinates that need to be warned in advance, and stored it in the GPS storage chip in the form of data.When the car is driving, the machine is positioned through satellite, compares the current position and the collection of coordinates.Calculate the police.
3. Why does the electronic dog know that there is a gas station in front (the gas station is also radar ???) and even the gas stations and service areas that have not been completed.Waves, what waves have been built ?????? Just a bunch of stones.
You can know why it calls the police through the above introduction, huh.Regardless of whether the gas station is completed, people must know.
① Electronic dog manufacturers can solve problems by buried a radio launch station in advance.
② GPS type can only enter a coordinate to the chip.
3 Speed ??metering equipment ground buried induction ring
This method is more classic and the detection effect is also good.Such as southern China, such as Shanghai, Guangdong and other regions, this method is mostly adopted.Determine whether the vehicle is at a speed of the parallel coil to determine whether it is speeding and camera to obtain evidence.The disadvantage of the detection method is that the construction volume of the inductive coil buried on the ground is large. Once the road surface is changed, the coil is required.Its huge.
Video detection
This method follows the process of continuous video images to track the process of illegal vehicle behaviors, and analyze and control photography through analysis and control.The advantages of the system are not limited by the situation of the road. The installation does not need to destroy the pavement, or the induction circle is buried under the road. It is a new generation of road vehicle detection methods by setting up a camera on the road.The disadvantage of the video is that it is difficult to identify mobile vehicles.On the one hand, there are enough fast -moving shutters (at least 1/3000px) to shoot high -speed mobile vehicles.The common violations are red lights, parallel violations and errors to choose lanes, etc. These behaviors do not require radar to match high -speed cameras, and use slow shutter to achieve the purpose of monitoring.In addition, video technology is affected by light and weather.
Microwave radar
As mentioned above, the difference and video detection, the intersection is usually multi -lane and has the complexity of multi -vehicle and multi -pedestrians.The microwave radar using the Doppler effect alone has great difficulties to detect vehicles illegal vehicles at the intersection. For high -speed roads with a faster speed and a single direction, microwave radar is the best partner at high -speed cameras. High -speed cameras accept it.The high -speed mobile vehicles detected by the microwave radar quickly entered the fast -catching state and cooperated with high -speed shutter for illegal collection.Mainstream products internationally are radar with high -speed cameras to shoot speed.
Ultrasonic detection
Mainly use the principle of ultrasonic ranging.The ultrasonic sensor head has a maximum of a few weeks in the harsh environment at the intersection, so the detection method is not applicable.
Infrared detection and laser detection
Infrared and laser detection are similar. Because the laser is a bit measured, the theoretical is feasible and the detection process is quite high, but comparedThe influence, point measurement efficiency cannot be fully regulated. The most important thing is that the laser beam in laser detection to the human body is mainly the human eye. It is particularly serious.In Europe and the United States and other countries, it also uses laser speed measuring speed measurement instruments. Its performance indicators must not only meet international security standards, but also manually control it in use to avoid damage to multiple peoples eyes.In Japan, it is strictly prohibited from using laser detection equipment, so laser detection is theoretically better, but the safety problems during use have not been resolved.
Camera header and principle
In fact, the camera of the camera at the intersection can be implemented through many technologies. There are no uniform standards and methods in this regard, which depends entirely on the construction unit of the bid.Under normal circumstances, you can trigger photos by radar, induced coils to trigger photos or trigger photos by image recognition.When using a radar trigger camera method, when the red light is on, a radar area is formed in front of the parking line. When there is a car passed, the electronic shutter photo is activated.At this time, the radar speed detector may work. When using the inductive coil to take pictures, when construction on the road, an inductive coil is buried under the road. When there is a car through the red light, the inductive coil car starts the electronic shutter to take pictures.When using image recognition technology, the ground white line is used as the warning area. When there is a vehicle through the red light, the white line of the ground is blocked, and the photo is triggered. Because the technology used is different, no device can predict the red light to take pictures.Unlike the speed measurement, only radar laser technology is used, so radar speed detectors can fully forecast speed detection.
Radar speed measurement
The so -called radar speed measuring is to obtain the movement speed of the measured object based on the calculation of the receiving reflection wave frequency transition.In laymans terms, it is to set up a radar launcher next to the road, launch a radar beam in the direction of the road, and then receive the cars reflection of the car. The car speed is determined by the echo analysis. If the speed exceeds the set value, the instruction camera shoots(Triggered the flash at night).Police radar speed measuring instruments are divided into two types: fixing and flowing. They are fixed on the bridge or crossroads, and the flow is generally installed on a patrol car.
4 The standard for Global Police Speed ??Merimation Channel by Speed ??Channel is formulated by the Federal Telecommunications Commission FCC (FededralcommunicationCommission). There are several types of X, K, KA, and Laser.Domestic speed measurement systems can be divided into American and European regulations and fixed photography systems.The U.S. channels include X, K, Kaband, and Laser. The European regulations have Kuband (0.025GHz different frequency in the U.S. -American K frequency), and the fixed photographic system has X, K, Kuband, and S induction coils (commonly known as PBAND).At present, the speed measurement devices used by domestic traffic police are basically imported equipment, and these two types of standards are mainly adopted.
The shape of this radar is circular, with continuous wave launch. The speed measurement distance is 150-4750 meters, but the XBAND interception radar cannot lock the vehicle in the car array (that is, there is a series of cars), so it is usually the first in the car array.The Taiwan was stopped by the police.This radar is also vulnerable to the interference of wireless launch equipment such as the telecommunications bureaus launch station, high -voltage wires, radio communications and even remote controls, electric doors controllers, etc., so the XBAND radar has almost been eliminated.
The KBAND speed measuring radar can intercept with a police car speed measurement, fixed speed measurement photography, handheld radar gun and flowing tripod speed photo.Its shortest speed distance is 150m.KBAND radar is more advanced than XBAND models, and can also be used with a camera to take photos.At present, most of the country is KBAND fixed photography, and the KBAND mobile speed measurement system and fixed photography system.The weakness of this radar is that it is more vulnerable to rainfall and humidity.
Usually we hear the so -called "mobile tripod" or the camouflage car to install this Kuband speed measuring radar. The KUBAND speed measuring system is generally composed of three major parts, speed measurement radar, interpretation speed computer host, and ROC camera.Among them, the radar can be adjusted into the two modes of "direction" and "coming". The erection method can be landed, a tripod type, and a camouflage car (police car) type.The host, radar, and cameras are set up on the tripod as the most standard configuration method of Gatso13. The speed is 20km-250km/h, and the shortest detection distance is 18m.Therefore, dont listen to the rumors of the so -called "high speed higher than XXXKM/h will not be photographed". Generally, your car will not run 250.Frequency band: KUBAND radar is the mainstream of the domestic mobile photography system.
There are several ways to appear in the Kaband radar. One is a mobile tripod, the other is a handheld radar gun, and the third is a speed measuring radar similar to the XBAND radar.
(laser):
Laser speed measuring system can be divided into speed guns and speed photography systems.Lidargun (LaserInfrareddeTechRectionRanging) is used as a speed measuring light source, and the speed of the vehicle can be measured within a short time (usually 0.3 seconds).The maximum speed measuring value of Laser speed gun and the flow speed measurement system is about 480km/h (it is difficult for you to run F1 on the road), and it is not common in China.
6. Fixed speed measurement photo
The fixed S coil can be measured by the coil induction, the red light is off the line, and the red light is off the line and the speed.It uses weight induction. Through the two inductive pressure bars before and after, a fine can be performed against a red light and an overspeed vehicle.The highest speed measurement range of domestic fixed speed measurement systems (S coils and radar systems) is generally around 270km/h.The KBAND fixed speed measurement system uses KBAND (24.125GHz) radar to take pictures. Traffipaxkband fixed -speed photography system is almost the rear of the car, and the power is extremely weak. Even the orthodox US species sometimes detects less than 100m.As for the XBAND fixed photo system, it is rare in China.The most common radar speed measuring camera in China is usually installed above the high -speed road and ring line, called the cycle lane radar speed measurement system.A radar probe is usually set up above the road you want to detect, and a 5 -meter 1.6 -meter width alert area is formed on the road in front of the radar. In order to reduce the false alarm (usually the systems misunderstanding rate is less than 5%), soThe radars launch power will not be too strong, so as not to generate misunderstandings.Depending on the situation of the vehicle on the pavement, the warning distance of the radar speed detector will also be different.Handheld radar speed test is also the most commonly used equipment for police.According to the different effective speed measurement distances of the transmitting power, between 300-800 meters? However, because the handheld radar uses a fuzzy aiming, according to the different conditions of the road vehicle, the police will not measure at a long distance. On the highway, it is usually on the highway.Speed ??measurement at the range of 150-300 meters, the speed measurement range of intercity roads and national roads is about 100-200 meters.If the police do not start the speed radar and generate a radar signal, the radar speed detector will not call the police.
5 Other devices
Traffic police flow rate radar
From the body type, the light hand -holding radar speed measurement is the most commonly used equipment during traffic police speed measurement. Due to the limitation of the transmitting power (the electromagnetic wave transmitting power is harmful to the human body), considering that all vehicles on the road should be monitored at the same time. Generally speakingThe traffic police will not measure the speed at a distance. On the highway, the speed measurement is usually measured at 150-300 meters, while the speed measurement range of intercity highways and national roads is about 100-200 meters.The heavy fixed radar speed measurement system has a large size and weight. It is mostly supported by a tripod. It is mostly used for external provincial highway, national highway, and highways. It can work around the clock and more comfortable operation.In order to improve the accuracy of the capture, the traffic police will form a warning area about 100 meters in front of the radar to take pictures of overspeed vehicles.Traffic police in domestic cities have been equipped with the most advanced radar speed measurement system- "Veylle."LDRs eye radar is a multifunctional, intelligent patrol speed surveillance monitoring radar, also known as patrol electronics police. It consists of radar speed measurement and camera combination. It has the advantages of capture goals, high camera clarity, accurate speed measurement, etc., can be restrained by still.The patrol work can print out the image and related models, license plate numbers, corresponding vehicle speed, time and other information such as the illegal vehicle, or implement remote transmission through the computer network.Prior to this, the speed measurement equipment of the traffic police could only show real -time vehicle speed, not to provide more information content, and there were some difficulty in the treatment of illegal treatment. If the parties raised objections, it was difficult to persuade strong persuasion.After using the LDR eye radar, the police only need to enter the detection location, the radar can monitor the instantaneous speed of the vehicle, perform image capture in time, and record data such as time, license plate number, instantaneous speed and other data. At the same time, the microcomputer processing of the instrument is processingThe system, printing the images and related information of illegal vehicles, so that the illegal driver who wants to "strive for" has to be taken orally.In addition, the LDR eye radar can not only conduct super -speed illegal monitoring, can also monitor the video of illegal acts such as illegal parking, long -term occupation of lanes, illegal overtaking, and cross -pressure lane driving.
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