In modern cities, what means of transportation do people come into contact with most every day? The answer may be unexpected but also reasonable: elevators. Therefore, the safety of elevators cannot be ignored. Recently, the Guangzhou Special Equipment Supervision and Inspection Institute and Guangzhou Yinguang Electronics Industry Co., Ltd. jointly developed the "Elevator Operation Recorder System". Don't underestimate this unimpressive "black box". It is the first of its kind in China and has obtained a national patent. , and passed the Guangzhou City Science and Technology Achievements Appraisal, attracting reports from many domestic media. It can monitor and record the operation of the elevator in real time, thereby greatly improving the safety of the elevator operation. To this end, our reporter went to Guangzhou to interview Xie Chao, the section chief of the Guangzhou Special Equipment Supervision and Inspection Institute, and Mian Zhi, the R&D engineer, to unveil the mystery of the elevator recorder for readers. Safety is the first purpose
Guangzhou Special Equipment Supervision and Inspection Institute (hereinafter referred to as: Special Inspection Institute) is located in Yuexiu District, Guangzhou, adjacent to the historic Liurong Temple. On November 8, the reporter came here and was greeted by Xie Chao, the section chief of the Special Inspection Office, and Mian Zhi, the engineer. They introduced the development process of the elevator operation recorder to the reporter in detail.
According to Section Chief Xie, as early as 2004, the Institute had the idea of ??developing an elevator operation recorder, because the Special Inspection Institute itself is responsible for inspecting all elevators in the administrative region and is responsible for issuing certificates of use. certified unit. In the past, during routine inspections of elevators, the inspectors could only check the current status of the elevator. However, the inspectors had no way of knowing what problems had occurred in the elevator some time ago. Therefore, the inspectors were unable to make correct decisions about the actual status of the elevator. Judgment, especially hidden faults, is likely to slip through the inspection and not be dealt with in time. When they finally occur, they will appear as serious faults and even lead to operational accidents, thus causing great losses. In order to solve this problem, the idea of ??developing an elevator operation recorder was put on the agenda, and the project was initiated in January 2005. It finally passed the achievement appraisal of the Guangzhou Science and Technology Bureau in August 2006.
For the original intention of research and development, Section Chief Xie boiled it down to the word "safety". "The development of this instrument was not a sudden thought because of the increase or decrease in elevator accidents. We mainly want to increase the operation of elevators." It has a safety protection effect on the elevator. Safety is the first priority.”
In the brochure of the elevator operation recorder, the reporter saw that in addition to the Guangzhou Special Equipment Supervision and Inspection Institute, there are also A company called Guangzhou Yinguang Electronics Industry Co., Ltd. In this regard, Section Chief Xie explained, “After many considerations, we finally chose Guangzhou Yinguang Electronics Industrial Co., Ltd. to cooperate, because they themselves are a manufacturer of car driving recorders and have a certain production capacity and technical level. Elevator The patent for the operation recorder is also owned by the Special Inspection Institute and Guangzhou Yinguang Electronics Industry Co., Ltd. At present, we have applied for three patents, and one patent has been authorized for the elevator operation recorder, and two more patents are being accepted. , these two are new functions we have added in the process of continuously improving the elevator operation recorder, one is the text message function, and the other is the network transmission function. ”
The functions are constantly being improved
.Because the function of the elevator operation recorder is similar to the "black box" on airplanes and cars, everyone also calls the elevator operation recorder the "black box" of the elevator. In addition to recording and monitoring functions, this "black box" also has very user-friendly features such as early warning and printing.
Monitoring function: The elevator "black box" can monitor and record the operating status of the elevator in real time. When the elevator has even a slight or short-term fault, the recorder system can automatically determine the type of fault and Record it all in memory. In this way, elevator maintenance personnel can fully understand the actual operating status and fault distribution of the elevator by analyzing the elevator operation record data over a period of time, including the time and duration of the elevator failure, fault type, etc. Through the fault statistics function of the recorder system, maintenance personnel can make a comprehensive and accurate judgment on the condition of the elevator, carry out targeted inspection and repair of problem parts, eliminate faults and accident risks, and effectively reduce elevator faults and operating accidents. probability of occurrence.
Fixed-point alarm: When an elevator fails, the elevator "black box" can immediately notify the maintenance personnel of the fault situation through the built-in GSM/GPRS wireless communication module and mobile phone text messages. Currently, it can simultaneously Sent to 3 managers. Mian Zhi, an engineer who developed the elevator “black box”, said: “At the beginning, the elevator operation recorder did not have a text message function when it was designed. We felt that if it was just a recording function, it seemed that it was not perfect enough to achieve real-time monitoring and timely alarm. purpose. So we added the SMS function after research, so that the accident response speed can be greatly improved. This function is our own. Now the elevator operation recorder can be set up for sending messages through the system. The management software can set which fault information needs to be sent, which is very convenient. ”
Network transmission and printing functions: After adding the fixed-point alarm function, the engineers who developed the elevator “black box” used user feedback. Added network transmission function. After the elevator "black box" monitoring fails, the wireless communication module can not only send mobile phone information, but also send information to a fixed IP address. With this function, the information monitored at that time can be sent to the website. Through the network, you can see the operation of the elevator, and you can share the information through the Internet, truly achieving real-time monitoring. Mian Gong said that this function can be selected by users. For example, in some large communities, which have their own monitoring centers, managers can use this network monitoring function when they need to monitor the operation of elevators in the community. If the monitoring center is on duty 24 hours a day, then the mobile phone information alarm function does not need to be installed.
The elevator operation data recorded by the elevator "black box" can be directly exported by inserting a USB flash drive into the port. If you need to save written data, you can also connect a printer to print out the data. This will be good evidence in the event of an accident or dispute.
Economical, practical and suitable for promotion
After listening to Section Chief Xie and Mian Gong’s introduction to the functions of the elevator’s “black box”, the reporter asked, “With so many functions in one, what is the use of the elevator?” Are running recorders expensive? Speaking of which, Section Chief Xie introduced another system to reporters: the "predecessor" of the "black box" - the "elevator remote monitoring system."
According to Section Chief Xie, the remote monitoring system for elevators is a system researched by the Special Inspection Institute a few years ago. It has the function of collecting the operating conditions of the elevator and monitoring the internal conditions of the elevator. It can be said that it has both functions. Monitoring equipment and elevator operation recorders and some expanded functions. If this system is installed, there is no need to install an elevator operation recorder.
Why was this monitoring device with such powerful functions not vigorously promoted after it was developed? In this regard, Section Chief Xie explained: "The most important reason is that the cost is too high. Because the system is very large and complex in terms of installation and debugging, and after installation, someone needs to be on duty indoors to monitor the situation in real time. If each community , buildings have installed this set of monitoring, then hiring staff will be a big expense. From an economic and market perspective, it is not practical, so we have not vigorously promoted the operation of the elevator we are studying. The recorder is equivalent to the terminal collector of the elevator remote monitoring system. It is simple and easy to operate and costs only about 3,000 yuan. It not only reduces the cost by 4 to 5 times, but also saves a lot of personnel costs."
Mian Gong added that among the 3,000 yuan cost, the most expensive one is the mobile phone information alarm function. Because of the addition of a wireless transmitter card, this part accounts for about one-third of the cost. The current requirement is that each elevator is equipped with a "black box" and each elevator has an independent transmitting device. After future research, we may continue to improve it, and may only use one transmitting device to send information to several elevators. , so the cost is reduced.
The "black box" is installed on the elevator simulation system, and the data can be displayed on the computer. (The circled area is the elevator "black box")
There are no loopholes in complementing each other
Nowadays, most buildings and residential areas have cameras and other monitoring facilities installed in the elevator cars. Do the monitoring functions of the elevator "black box" and the camera overlap? In this regard, Section Chief Xie and Mian Gong had the same answer, “If only a simple camera monitoring device is installed, there will be no conflict in installing the elevator operation recorder, but it will play a supplementary role.
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Because the elevator operation recorder has no visual function, it can only faithfully record the operation of the elevator, and it is installed in the machine room of the elevator. It cannot see the entry and exit of people in the elevator. The camera in the elevator The monitoring device is installed in the elevator car and can monitor the entry and exit of the elevator in real time, but there is no way to know the operation of the elevator. It can be said that the elevator "black box" is a device that monitors the elevator itself.
Thank you here. The section chief gave an example. A 21-year-old girl was taking an elevator in a hotel. When the elevator stopped and she couldn't get through her cell phone, she forcibly opened the elevator door. As a result, she fell into an elevator shaft more than 10 meters deep and died on the spot. The camera in the elevator captured the last 8 minutes of her life. If there was someone in the duty room at this time, the camera could detect someone trapped in the elevator and avoid the tragedy. Otherwise, the camera will not be of much use. If an elevator "black box" is installed, it can automatically alarm when a fault is detected, and the trapped person will not have no way to ask for help, and the maintenance personnel can arrive in time, and the danger will be greatly reduced. The functions of the monitoring equipment installed in the elevator and the elevator "black box" do not overlap.
Publicity and Promotion
According to Section Chief Xie, the current promotion and use of elevator operation recorders is by The special inspection office and Guangzhou Yinguang Electronics Industry Co., Ltd. jointly implemented the promotion mainly for the safety role played by the elevator "black box". The special inspection office has applied to the relevant departments in Guangzhou and hopes to apply it throughout Guangzhou. If the effect is good, it can be promoted nationwide. At the same time, he also mentioned that not long ago, the director of the Technical Supervision Bureau of Chaoyang District in Beijing came to Guangzhou to learn from the experience. After the document is released, relevant units in Guangzhou will install 100 units free of charge. The funds will be provided by the Guangzhou Municipal Quality Supervision Bureau. After these 100 units are installed and used, they will be slowly promoted. There are already several elevator manufacturers interested in recording this record. The instrument is being used in the elevator products produced and is currently under negotiation.
However, if it is to be promoted to Guangzhou or even the whole country, there will be a system compatibility issue. In this regard, Mian Gong said that it is still under development. During the process, product compatibility was taken into consideration. During the installation and debugging process, they were installed and tried on mainstream brands of elevators. Judging from the current installation situation, there are currently more than 20 elevators in use in Guangzhou. , basically meeting the operation requirements, accidents and faults can be well detected, and information can be sent out in time. The understanding of the current use of the elevator "black box" is mainly reported by users, and the special inspection office will also do so. Take the initiative to understand the use of elevators, and go to users from time to time to extract data recorded by elevator recorders.
When it comes to shortcomings, Mian Gong replied that it may be in terms of power supply. If the building or community has a power outage, The recorder cannot be used, “but we are now preparing to add a self-contained power supply. The first batch of finished products are being promoted, and the second batch will be continuously improved. "
Civil air defense + technical defense has the strongest effect
In the safe use of elevators, how do you view the relationship between civil air defense and technical defense? Section Chief Xie gave an incisive answer, " The equipment is all important, but the management of personnel is the most important, including the improvement of the elevator usage system and the civilized riding of passengers, which all play a very important role. Elevator accidents are mostly caused by human factors. Technical equipment cannot reduce accidents, it can only detect accidents in time, prevent and reduce the occurrence of accidents.