Coming out of Manager Zhang Hui's office, Jiang Hai clearly felt that his sales skills had increased. Even if he didn't use the mind-reading technique, Jiang Hai felt that something he had predicted was right for Zhang Hui's appetite.

To say that two or three days of sales practice has made you grow into your ability, it is absolutely nonsense. No matter how much it grows and advances by leaps and bounds, it is impossible to have such a genetic mutation.

Well, it must be the help of the system. Isn't it, after completing the 100,000 order last time, the system said that the sales capacity has increased by half a star.

Don't underestimate this half star, perhaps, this half star sales ability is something that some salespeople can't get in their lifetime.

Jiang Hai is also a salesperson, and his sales ability is only one star, which shows how difficult it is to have the ability of this half star on that standard gold line.

At six o'clock tonight, Zhao Yang and Brother Zhao will introduce himself to Ding Jie, the boss of Yongxiang Fire Company.

Jiang Hai went home, dressed up carefully, and hurried out from home.

The suit is straight, and it is very formal Jiang Hai deliberately concealed his own age, saying that he is not confident, Jiang Hai's most important factor is that he is in his twenties, and he has less of that kind of time on his face.

When I got out of the car, I saw a magnificent building in front of me.

The silver glass leads to the sky, which is crowned with a golden dome and a large disc, and at the top is the world's most famous revolving buffet restaurant.

Many young couples in Jiangnan like to go to the revolving restaurant to eat a buffet on weekends and take a look at the scenery of the whole city of Jiangnan.

And during the day and at night, the scenery of Gangnam is different.

During the day, the most beautiful is in the early morning, when the layer of white fog is slowly torn apart, the first rays of sunlight jump out of the sea of fog, like a long-lost reunion of children into your arms, that is the most beautiful touch.

Then the sky bloomed, and the gentle wind stirred the treetops, and the whole city was dragged up by a patch of light; There are few people on the road, and it is all the home of green trees on the side of the road; The old man who jogged in the morning, the elder was a small ant, watching their morning jogging, it looked like an ant moving, extremely cute.

At sunset, patches of glow hung over the city, as if to cast a veil of mystery on it, and then as its face blurred, the city's lighting system was activated, and it entered another realm of beauty; At the beginning of the day, the lights are bright, and the city is swaying like a glass of red wine; Jiangnan is a city with a nightlife, noisy, but full and free.

Jiang Hai, who is accustomed to life in the north, seems to have found this pattern, that is, many activities are arranged in the evening by Jiangnan people. It may be easier to produce some kind of cooperation at night than during the day.

After looking up at the buildings in front of him, Jiang Hai entered the Universal Hotel.

There are still a lot of people who come here to eat, and there is a family of three in front of Jiang Hai. Mom and Dad are in front, playful children are in the back, the automatic sensor door opens at this time, and Jiang Hai also walks in the direction of the door.

In the face of the sensor door, ordinary people will not have much idea when they enter, but for Jiang Hai, a science and engineering man, graduated from electronic information engineering, and now he is also working in an intelligent system, he is somewhat careful.

This kind of door, it has three types: translational moving door, arc door, and revolving door.

When a moving object approaches the door, the door opens and closes automatically, and here's how it works! But can't it be said that as long as a person is close, it will work 100 percent?

Speaking of the induction door system, its working parts are mainly composed of several parts, the main control device, the induction detector, the power motor, and the direction system composed of the door leaf travel track, the door leaf spreader wheel and the lower guidance system, as well as the timing belt.

It is the command center of the automatic door, which is a large-scale integrated block with command programs inside the pass, issuing corresponding instructions and directing the motor to work.

There are two kinds of induction detectors, microwave sensors and infrared sensors, which are responsible for collecting external signals, just like people's eyes, when a moving object enters its working range, it gives a pulse signal to the main controller.

The induction detector collects the pulse signal and transmits it to the main controller, which notifies the motor to run after judgment, and monitors the motor speed at the same time, so as to notify the motor to be afterburner and enter slow operation at a certain time.

After the motor gets a certain running current, it runs in the forward direction, and transmits the power to the synchronous belt, and then the synchronous belt transmits the power to the spreader system to open the door;

After the door is opened, the controller will make a judgment, and if the door needs to be closed, notify the motor to move in the opposite direction and close the door.

The truth is not difficult, in fact, it is not about the induction door system, in the mainstream market of these system working equipment, the principle is actually the same, are all through guò a field device, such as the sensor to feel some factors and parameters in the environment where it is located, such as temperature, humidity, speed, current, voltage, ultrasonic, gas, etc., to collect pulse signals to be transmitted to the host, the host to issue instructions to action other equipment.

However, it is such a system operating principle, which inevitably has a blind spot!

Due to the environmental differences of the construction, the length of the wiring is not necessarily, after the completion of the construction, the line will have an impact on the voltage output of the host, with the extension of the line transmission distance, the voltage of the terminal circuit is bound to be unstable, which will cause the lag of the whole system, slow work, or strict zhòng to temporary shock (crash).

Therefore, even if the manufacturer's equipment quality is completely unproblematic, it may cause system troubles due to the uncertainty of the installation and on-site use environment.

More importantly, due to the sensors and detectors that collect signals, and the ways and methods of collecting signals, the pulse signals searched by themselves are incomplete, ignoring some dead spots and blind spots; This deficiency causes the entire system to have inherent deficiencies and defects even in the most perfect installation and use environment.

For these defects, Jiang Hai clearly needs to work more comprehensively from the sensing source and consider more reference conditions, but due to the asynchronous technology at this stage; The technology can support it, and because the cost is too high, all such induction systems on the market have certain hidden dangers. (It's also a principle that elevator systems can malfunction.) ）

For professional reasons, Jiang Hai is wary of this kind of system similar to the sensor door, calm when approaching, and it is the last word to walk over quickly after it is opened.

Jiang Hai will be behind the family of three, the child's parents first passed through the induction door safely, the child walked forward by himself, the shoelaces were opened at this time because of running, he squatted down and fiddled with the shoelaces, but stopped in the middle of the induction door.

When Jiang Hai was also close and continued to walk forward, a voice sounded steeply.

System scanning, the current working state of the sensor door is abnormal, and there are certain potential safety hazards.

Analysis reasons: caused by technical defects in the system, the induction detector collects signals in a single way, only with infrared induction, infrared induction is exposed, induction is stored in the dead angle, and when the child passes by, the induction source can not be sensed the fastest;

2. The distance sensitivity is not enough, and the induction will partially or completely fail when the temperature and human body temperature are close, resulting in temporary stagnation of the system......

At present, the child is not sensed by the sensor source, the sensor has sent a closing signal, and the sensor door is about to close...

Jiang Hai's current distance is not enough to keep the sensor door open, and the door has to be closed immediately, as long as the door is closed, the child will inevitably be trapped.

But the four or five-year-old child didn't notice it at all, and his parents didn't know what to do in a hurry, and they didn't notice that the child didn't come in.

Drip, drip...

The system reminds that if the induction door system is faulty and the induction source signal is disordered, the induction door will be closed in time and will not be opened, and the closure will no longer consider other factors and implement forced closing.

Forced shut-off, that is, no matter what is clamped, the motor will be started to close at maximum power. Even adults may be cut, let alone a four or five-year-old child, and a tragedy is about to happen

Ask for a collection, please not add to the bookshelf!