Forklift Alignment Laser Module
The top laser aligns fork tines with pallet fork slots to prevent damage to goods. The bottom laser aligns forklift with pallet rack beam to avoid damage to the rack.
Forklift Alignment Laser Module,Green Laser Module,Laser Module,Forklift Laser Safety Warning Light Changshu Desheng Optics Electronics Co.,Ltd , https://www.ray-lasertech.com
Applicable enterprises: enterprises preparing for the new system.
Difficulties: Although the integration with wireless systems is not a new issue, it is also very easy to achieve, but the arrival rate is a big problem.
In the field of forklift positioning, the laser helps guide the forklift operator place forklifts more accurately.
Life-threatening gas monitoring informationization guarantees coal mine safety (Part 1)
The continuous rise in coal prices has made many companies profitable. Some people only care about earning money, only focusing on production, and leaving the word "safety" behind them, leading to frequent explosions in coal mines.
The national coal mine promotion digital gas remote monitoring system video and telephone conference held at the end of June set hard rules for coal enterprises: by the end of this year, high gas, coal and gas outburst mines must all establish and improve safety monitoring and monitoring systems; former state-owned key coal mine Enterprises need to realize the internal network connection of the mining bureau (group company); the state-owned local coal mines and township coal mines must realize the network connection within the county (district).
It's like putting a tight spell on the head of a coal enterprise. If coal companies want to continue production, continue to survive, and continue to create profits, they must put gas monitoring first.
However, is the gas monitoring system so good? There are still a lot of hurdles that need to be crossed for the life-threatening gas monitoring!
Information transmission, one meter short is also a disaster
What is the coal mine safety monitoring and control system monitoring? Is the gas depth hundreds of miles or even thousands of miles below the standard, whether there are hidden fires, spontaneous combustion and other safety hazards. However, it is difficult to let the people in the mine monitoring room know these indicators, and even let the upper-level group companies know this. The transmission problem bears the brunt. Even if the information transmission radius is only one meter short, it will cause irreparable disasters. . For example, the data monitored by the gas concentration monitoring head is transferred from the downhole to the uphole, then from the uphole to the monitoring station for monitoring and analysis, and finally the processing opinions are returned to the downhole. What method should be used? Many places do not even have a telephone line. How to deal with it?
Method 1: Lay the cable. The downhole information and the uphole information are communicated through the optical cable, and the digital signal is used to replace the previous analog signal to enhance the accuracy of the information and avoid interference.
Shanxi Shuozhou Coal Mine Gas Monitoring System Optical Cable Project undertaken by Shanxi Post and Telecommunication Construction Engineering Bureau is a typical example. The project covers more than 200 mines in 5 counties and districts, Shuocheng District, Pinglu District, Shanyin, Huairen, Youyu, Shuozhou City, with a total of more than 40 access points, more than 600 kilometers of optical cable, and more than 14 million investment yuan.
Applicable enterprises: Mine is relatively concentrated.
Difficulties: Relatively expensive cable laying and large investment are not realistic for some small mines or relatively liquid coal mines.
Method 2: SMS. The short message here is not the usual short message we usually use, because there are no signals for hundreds of miles downhole. The short message used by the gas monitoring system is the short message communication method of the digital cellular wireless network. That is, the gas concentration detection probe and the wind speed sensor are placed in the proper position of the main return air shaft (alley). When the gas concentration and wind speed exceed the limit value or the main fan opens , Stop or when the operating load changes greatly, the short message sending module sends the corresponding short message to the monitoring center and the personnel on duty at the same time and alarms.
Huainan Mining Group Co., Ltd. has established a gas overrun short message reporting system, analyzes and filters the monitoring information uploaded by each mine monitoring host through a specific program, and then groups and sends according to the overrun limit size and trusted leadership level. The group company and the relevant leaders of the mines can timely grasp the gas overrun situation and promptly coordinate the safety production work.
Applicable enterprises: The wireless short message communication method is convenient to realize, the investment is small, and it is very suitable for small and medium-sized mines.
Difficulties: There are not many products available on the market.
Method 3: Rent public wireless network or digital optical fiber. This actually solves the problem of information transmission from the coal mine to the monitoring center. Many coal mine group company subordinate enterprises are relatively scattered. Most of the subordinate enterprises have installed and used gas monitoring and monitoring systems, which need to be passed to the head office.
Ningxia Autonomous Region coal mines are equipped with gas monitoring devices, which are connected to the electronic gas monitoring system of the Autonomous Region Coal Mine Safety Supervision Bureau through wireless networks to implement all-round safety monitoring.
The coal mine gas monitoring and monitoring network system of Henan Province is based on the gas monitoring and monitoring systems formed by coal enterprises. It is composed of provinces, coal production cities under the jurisdiction of the province, county-level systems and enterprise information collection systems. It uses leased public wireless networks or digital The combination of optical fibers realizes information communication.
Applicable enterprises: Information needs to be transferred from the mine to the headquarters in a centralized manner.
Difficulties: Not all places have GPRS networks, and the rate is also an issue that must be considered.
Method 4: Use satellite communication technology to transmit the information to the monitoring station and the general control room. This is also a recommended method for some qualified coal mine enterprises. In response to the current situation that Chongqing has a large number of mines, small output, and a low starting point for mine operation, the Chongqing Economic Commission will implement full coverage of safety monitoring through satellite communication technology in 217 high-gas mines in order to keep abreast of coal mine gas changes and fan operation .
Applicable enterprises: coal mine enterprises that are far apart and scattered.
Difficulties: The price is expensive.
Emergency alarm, one second later is life
From the system to the person, a notification method is needed. If the monitored dangerous results are not released in time, no matter how accurate and sensitive the monitoring system is, it is useless. Emergency alarms, even if delayed by one second, have to pay the price of life. Therefore, the alarm method of the gas monitoring system should not only be fast, but also accurate, and never allow errors or delays. Misreporting will cause huge economic losses, but if it is not reported or late, it will cause disaster ... Therefore, the alarm method of the gas monitoring system has also received a lot of attention. What are the current effective and relatively stable alarm methods?
Method 1: Use sound and light alarm. Once a danger occurs, the use of ringtones and light changes to alarm, the biggest advantage is obvious, and the spread is large. The gas detection system of Shahe Coal Industry Bureau adopts the method of sound and light alarm. They remotely digitalized 24 hours of underground mining, gas concentration, carbon monoxide concentration, fan on / off status, equipment feed and power outage, and image monitoring of the main production parts on the ground. As soon as there are major hidden dangers, the audible and visual alarm system will start immediately, lock the image monitoring, timely grasp the development of the disaster situation, issue rectification instructions in the first time, and monitor the processing situation throughout the process. Due to the wide spread of sound and light alarms, the main production parts such as the winch house, wellhead, dispatch room, and monitoring room of all mines can be included in the monitoring range. .
Applicable enterprises: Enterprises that are limited in scale and cannot fully reach interconnection.
Difficulties: Simple alarm, can not quickly determine the cause of harm and treatment.
Method 2: Use GIS system. At the same time when the alarm is sent out, it is accurately known that the location where the danger occurs depends on the GIS system. The alarm point flashes directly on the monitoring screen, and the dangerous location can be accurately displayed on the screen, which is of great significance for emergency rescue. For example, Huainan Mining established a geographic information system for mine safety management as early as 2004, that is, a safety monitoring information network, collecting information from various measurement points (including controlled points) uploaded by each mine monitoring host and transmitting it to the group company server , And even the Provincial Safety Supervision Bureau. The regional power outage alarm function they recently added is to use the GIS system, that is, to establish a measurement point association on the mine. If there is a power outage without power outage, the system will issue a color change alarm message at the relevant location of the mine graphics. , So that the duty personnel can better observe, and the duty personnel can also report the situation of the underground CH4 and other parameters through daily reports, briefings and other forms.
Applicable enterprises: The scope of the mine is relatively large.
Difficulties: GIS requires funds, perseverance, and accurate data.
Method 3: SMS. What if the leader is not in the mine and needs to understand the safety of the mine? Since June, the gas concentration in any production area underground in the Handan mine area has exceeded the limit. The director of the mine in charge of ventilation and safety, the mine leader and the Handan Group Corporation The mobile phones of the leaders of relevant functional departments will receive the alarm short message as soon as possible. This is due to the fact that the Handan Mining Group Company installed the KJ75 type safety information monitoring system in five production mines except the Yang Mining Company last year, and it was the result of full network connection. This system is mainly to facilitate leaders at all levels to find problems in the shortest time, make timely treatment suggestions, and further improve the level of mine safety. This year they upgraded the system control software and added a mobile phone alarm function. When the instantaneous value of gas concentration in a production area reaches 1%, the monitoring system will automatically send an alarm message to the ventilation zone director and the mobile phone of the staff in the dispatch room of the Handan Group Corporation; after 30 minutes, if the gas concentration does not decrease, it will Send a message; when the gas concentration reaches 1.5%, the monitoring system will send an alarm message to the chief engineer, the safety mine director, the mine director, and the Vice Minister of Ventilation of the Production Technology Department of the Handan Group Corporation; if the gas concentration continues to increase, the system A higher level of leadership alarm.