In the office hall of the DMV, behind the counter, the uniformed staff said to Chen Song and Wang Ze after looking at the computer: "Your vehicle is seriously speeding, you will be fined 2,000 yuan, 12 points will be deducted, and your driver's license will be revoked." ”

"Ahh

Chen Song exclaimed.

He didn't expect the punishment for speeding to be so severe, if the driver's license was revoked, how could he drive the delivery.

Wang Ze asked anxiously: "How much is our vehicle speeding?"

The worker looked at the data recorded in the computer and replied: "Your vehicle has reached 190, and the road speed limit is up to 120, which is 50% more than the speed limit, but not 70%. ”

Wang Ze asked, "Are you sure?"

"That's right, it's the two of you in this picture. ”

The staff tilted the computer slightly, and saw Chen Song and Wang Ze sitting in the van, Wang Ze still drooping his head, looking sleepy.

"Is your speedometer inaccurate?"

Wang Ze pointed to the photos on the computer and said, "We are driving a Wuling Hongguang van, how can we run 190." ”

The staff said: "The capture data displayed on the computer is indeed 190, and the speedometer has never heard of any problems, as for why your car is running so fast, I don't know this." ”

For this kind of person who came to the DMV to pay a fine and deduct points, he didn't know how many he had seen in the middle of the year, and none of them who were speeding did not question the accuracy of the high-speed speed meter.

"There must be a mistake, I can't drive that fast, there's definitely something wrong with your speedometer!"

In front of the window of the counter next to him, there was the roar of a middle-aged man.

"This ......"

Wang Ze was embarrassed for a while, but he didn't expect to be able to collide with others.

The staff spread their hands, showed a helpless expression, and said: "You also heard, everyone said that they didn't speed, you better hurry up and pay the fine and driver's license, and then go to study again." ”

"I think it's better for you to find out. ”

Wang Ze was suddenly anxious.

"You don't have to look it up, that's the data. ”

The staff was patient and said, "You better hurry up, there are still many people queuing up behind." ”

"Impossible, it's definitely your speedometer that has a problem, how can any van run 190!"

Wang Ze shouted loudly with an extremely excited expression: "Our van is outside, if anyone can drive it to 190, I will send him directly!"

Everyone in the hall looked at Wang Ze with excitement on his face.

"What van can run 190 so outrageous?"

"I said there was a problem with the speedometer, and the van ran 190, who would buy another car!"

"It's just that it's outrageous, the deviation of this speedometer is so big, it seems that I haven't been speeding at all before. ”

The people in the hall were in an uproar.

"Quiet!"

The worker looked at the chaotic hall, frowned and said loudly: "Isn't it normal for vehicles to be modified to run 190?"

The hall was suddenly silent.

Nowadays vehicle modifications are too common, especially vans, many even have the engine changed, just a van shell.

"You said I was speeding, I admitted, you said I modified and I didn't accept it. ”

Chen Song said angrily: "Our car is parked outside, you can have people inspect it, if you find the slightest trace of modification, the vehicle will be given to you, you can do whatever you want." ”

The staff member snorted: "As long as there is modification, the vehicle itself has to be detained." ”

"What's the noise. ”

A uniformed, older man walked out of the side door.

"Director He, some people have objections to the ticket. ”

The staff member hurriedly got up and looked at Chen Song and Wang Ze very dissatisfied.

In the past, when I encountered objections, I basically complained a few words, how could I be like these two people who were so stubborn, in front of absolute evidence, it was just a useless struggle, and it was a waste of my time.

"The brand-new van that has just landed has a speed of 190 per hour, and no one is convinced. ”

Wang Ze snorted coldly, and said angrily: "If the van can run at this speed, who will buy McLaren!"

"You ......"

The staff member looked annoyed, and just wanted to open his mouth to argue, but was interrupted by the director who stretched out his hand and said, "Okay, don't make any noise!"

He walked to the computer, looked at the data and the photos he captured, and then instructed the staff member: "You ask the data center and let people check if there is any problem with the speedometer and capture system there." ”

"Yes!"

The staff member hurriedly made a phone call and reported the van's speeding location.

It didn't take long for the data center to reply that there was no problem with the radar speedometer on the gantry, but the ground sensing coil of the capture system was a little loose, and the signal transmission to the camera was a little delayed.

"The speedometer is fine, even if the ground sensing coil is loose, it will not affect the data, and the data and imaging are only slower at most."

Director He frowned deeply.

There are two commonly used speedometers: radar speedometer and laser speedometer, of which the main principle of radar speedometer is Doppler effect, that is, when the target is close to the radar antenna, the reflected signal frequency will be higher than the transmitter frequency, on the contrary, when the target is far away from the antenna, the reflected signal frequency will be lower than the transmitter frequency.

When the object is touched with a displacement movement in the direction or back, there is a frequency difference between the electromagnetic wave emitted by the velocimeter and the reflected electromagnetic wave, and the speed of the object is obtained through this frequency difference, so as to achieve the purpose of velocity measurement.

Most of the highways are radar speedometers, which are fixed on poles, gantries or speedboxes for speed measurement.

As for highway speeding capture, there are mainly front-end intersection capture system, also known as front-end system, network transmission part, and central management system.

The vehicle speed detection system at the front end consists of a dedicated DSP chip, which is independent of other systems. BETWEEN 20KM/H AND 140KM/H, THE ERROR OF MEASURING SPEED AND ACTUAL SPEED IS WITHIN ±3KM.

At present, it is the most reliable ground inductance coil detection mode, when the vehicle passes through the ground induction coil, the vehicle detector detects the signal that the vehicle passes, inputs it to the control host, calculates the vehicle speed, and sends the capture signal to the camera, thereby controlling the camera to capture, and the camera transmits the captured picture to the control host, that is, the industrial computer, and then transmits it to the central server.

In addition, the system automatically captures an image of a passing vehicle in real time, and uses Microview brand Gigabit Ethernet GE series high-definition cameras to capture the vehicle at the front end.

From the host computer to the camera section, only a power cord and a network cable of six types of lines are needed, and the transmission distance is long, so that the system has the characteristics of simple composition, direct system function, rapid system response, etc., so that the image can be clearly distinguished by the naked eye The color of the vehicle, the characteristics, the number of the license plate, the color, the facial features of the driver and the passenger, can clearly identify the characteristics of the license plate and the entire body during the day, and can overcome the headlight glare problem of the head-on shooting of the vehicle at night, and the license plate and the whole body characteristics at night are equally clear.

The highway speeding capture system can be said to include image processing, image storage, image query, license plate recognition, front-end equipment setting, system operation monitoring, system database maintenance, equipment maintenance and other functions.

"Let's go, go see your car. ”

Director He thought about it and felt that if there was a problem with this matter, it should be in the car.

After a comprehensive inspection of the van, the vehicle personnel at the DMV said that the vehicle was indeed a new car that had just landed, and no traces of modification could be found.

"Strange thing!"

Director He was puzzled.

The capture system and the speedometer are fine, and the van is fine, so what's the problem?

Wang Ze nervously asked Director He, who was deep in thought, "Since our car has not been modified, could it be that your system is wrong?"

"There's no way you could go wrong!"

Director He immediately said with some uncertainty: "I'll let people check it again." ”

Immediately, he instructed people to check the speedometer and capture system before and after the van's violation site to see if there was any data.

As a result, the data center quickly replied that only that one location had data, and the rest of the places with speedometers and capture systems did not have any data.

"It's just a van, it can't go that fast, you have just checked, and it can only run at a maximum speed of 155KM. ”

Wang Ze said to Director He with an aggrieved face: "We rely on this van to deliver goods, even if we can drive so fast, we don't dare to drive it." ”

Director He's heart moved, and he asked, "What kind of goods do you usually transport?"

"We are transporting pastries, and once we are transformed, we run away in vain. ”

Wang Ze looked at Director He pitifully.

Director He nodded understandingly.

This kind of pastry can not have a big collision, the speed is too fast, once there is a sudden braking situation, under the action of inertia, it will inevitably be squeezed, easy to deform.

He pondered for a moment and said, "This matter is indeed controversial, so let's keep the ticket first, and you don't have to deal with it first, and after we further verify, we will punish or revoke it at that time." ”

"Thank you, Director!"

Chen Song and Wang Ze were overjoyed.

"It's still the director's fairness!"

Wang Ze patted the horses without leaving a trace, and at the same time squinted at the staff member.

The staff member was so angry when he heard this, but he couldn't refute it, so he turned his head to the other side, as if he hadn't seen or heard.

Chen Song and Wang Ze, who came out of the DMV, secretly breathed a sigh of relief.

This driver's license has finally been saved!

On the way back, Chen Song was extremely careful, for fear that a violation would occur accidentally, but he had just understood the matter of deducting points.

......

The Yimeng dessert shop is very lively at this time.

The small dine-in area was full of people at this time, young and old, people in suits and leather collars, and slippers and shorts, everyone's faces were full of anticipation and excitement, and when talking to others, their eyes kept glued to the door, depending on who was waiting.