In the afternoon.

Lin Fengxian was intently drawing the topographical drawings of the school to facilitate the selection of monitoring positions.

Lu Dongye took advantage of this time and quickly cleaned up a room as the next monitoring room.

Lin Fengxian deserves to be a professional security officer.

Lu Dongye saw that on the drawings, Lin Fengxian chose the location for installation and monitoring, and he chose it very accurately.

The location he chose not only has a small monitoring blind spot, but it is also not easy to be detected, and there are surveillance cameras here.

"I deliberately selected a batch of high-quality surveillance cameras. ”

Lin Fengxian took a surveillance camera and explained to Lu Dongye: "This kind of camera, although the pixels are not too high, the camera position is high, and the image range is large!"

And with night vision function, the picture can be captured clearly at night, and the most important thing is that the infrared rays he emits use of stealth technology, which will not be seen. ”

Speaking of this, Lin Fengxian smiled proudly: "The model of this camera was personally selected by our supervisor before, and it was deliberately installed in an inconspicuous place in order to monitor his own people, whether there is any negative slacking or anything like that." ”

"That's exactly what we need. ”

Lu Dongye was very satisfied with his introduction.

Moreover, he also found that the size of this surveillance camera is very small.

couldn't help laughing: "I didn't intend to serve as a warning, just to prevent troublemakers." ”

Although he doesn't know much about security.

But I also know that surveillance cameras are roughly divided into two categories.

One is to shoot and act as a vigilance, for example, the huge camera at the traffic light at the intersection.

In addition to its high-definition, accurate and intelligent capture, its biggest role is also to warn the driver that there are cameras here, be careful not to violate the rules.

There is another kind, which is Lu Dongye's hand now, this kind of relatively secret camera.

It may not have intelligent and accurate captures, and it may not be able to provide high-definition images.

However, it is very secretive, and it is used as evidence to photograph the violation of the crime.

What Lu Dongye needs is exactly like this!

Immediately after, the two of them took the drawings together and began to install surveillance cameras in all corners of the school.

Most of the positions selected by Lin Fengxian are the only way to enter the school.

The size of the school was already small, and the cameras on the periphery quickly formed a circle.

It can be 360 degrees, and the environment outside the school can be monitored without any dead ends.

The rest is to monitor the cameras in the school.

The positions chosen by Lin Fengxian are also as bright as possible to all corners of the school.

Among them, a camera was also installed outside the toilet where there had been several accidents.

After all this, it was already six o'clock in the afternoon.

Lu Dongye and Lin Fengxian took the line away again, and led them all to the monitoring room.

Here, all the surveillance cameras are finally plugged into the monitoring box and finally connected to that screen.

Subsequently, Lin Fengxian did some accurate debugging.

As a result, Lu Dongye saw that the display area of the entire screen was divided into thirty small grids.

On each grid, a surveillance camera is displayed, and the picture is captured.

Lin Fengxian demonstrated to Lu Dongye, and each grid can be enlarged so that it is easier to see the picture more clearly.

"Camera No. 15 is shooting the front of the school, and from this angle, you can see the playground just in full view, and you can see the situation of the classrooms not far away, and even the children in physical education class. ”

Lin Fengxian said with emotion while introducing: "The number of alarms I bought is limited, and this kind of monitoring on the surface is not installed, but it is ...... like the No. 3 position."

As he spoke, he zoomed in on the image of camera 3.

I saw that what was monitored here happened to be the direct line from the village to the school.

It was also here that Lin Fengxian discovered the small mechanism for the first time.

"If there are any more people who stay here secretly for a long time, the alarm will be triggered, and there will be no movement on the camera, but in my monitoring room, the alarm will sound. ”

Lin Fengxian introduced this, and suddenly said with some regret: "The only bad thing is that I didn't buy an intelligent master control platform, and I could only rely on the alarm to capture it by myself, and I couldn't intelligently distinguish friend from foe." ”

Lu Dongye knew the problem he said.

For example, this No. 3 position, if he Lu Dongye stands there for a long time, I am afraid that the siren will also be triggered.

But if there is an intelligent master control platform, it is different.

It's completely possible to add all familiar faces to the whitelist.

Under the recognition of the camera, the alarm will automatically filter the people in the whitelist and will not trigger the alarm.

Moreover, it will be faster and faster to catch people who are not on the white list!

"No way, that thing is too expensive, and the school can't afford it now!"

Lu Dongye could only sigh: "When the school's finances are abundant in the future, I will definitely configure a general control platform for you as soon as possible, and now, I can only work hard for Captain Lin." ”

There is no master control platform, so it can only be supervised by manpower, and even if the alarm is wrong, it has to be controlled and canceled by manpower.

The most troublesome thing is that it takes a certain amount of time to trigger the siren.

If someone comes to mess with the camera, it is unlikely that the alarm will be triggered for a short time.

This is undoubtedly up to manpower to judge.

However, Lin Fengxian was very optimistic, and immediately smiled: "That thing is expensive! A entry-level one that can be used has to start with hundreds of thousands! Anyway, there is nothing big in the school, I just sit in the monitoring room all day and stare at it, and I am not tired! What is the hard work!"

Saying that, Lin Fengxian still sighed with some emotion: "This time I have spent more than 50,000 yuan on the purchase of this pile of equipment, which is expensive enough, and the rest of the money should be used for school construction as much as possible, anyway, the current security is basically enough." ”

"That's right. ”

Lu Dongye also said: "If Captain Lin thinks of anything that still needs to be improved, tell me when the time comes, I can still come up with some more funds." ”

This time, the monitoring equipment purchased by Lin Fengxian is a batch of better quality.

Because yesterday, the two discussed that this kind of monitoring equipment can usually be used for many years.

I simply bought some good ones at once, and the cost performance of buying a bad one is really not high.

So, just purchasing some cameras and a screen, plus some simple sirens, it cost more than 50,000 yuan!

All of a sudden, all the rewards for assisting the police and arresting the fugitives were spent, and more than 10,000 yuan was added!

If you just sell wild fruits, this month, the net profit is not enough at all!

However, Lu Dongye was not distressed, because the money was worth it!

It's just spent on the edge of the knife!

And...... The cost of more than 50,000 yuan quickly paid off for Lu Dongye!