摘要:
为进一步发挥煤矿安全监控系统在瓦斯防治中的作用，需对AQ 6201—2006《煤矿安全监控系统通用技术要求》进行修订，拟修订的主要内容包括：增加煤与瓦斯突出报警与断电闭锁功能，增加风向传感器；允许系统使用光缆传输；将传感器防护等级提高到IP65；要求系统主机双机热备并自动切换；不要求井下电源防雷；减小传输处理误差，模拟量输入、模拟量输出、累计量输入传输处理误差均不大于0.5%；缩短系统最大巡检周期，系统最大巡检周期不大于10 s；延长存储记录保存时间，缩短丢失信息时间，甲烷等重要测点的实时监测值存盘记录应保存3个月以上，模拟量统计值等记录应保存2 a以上，当系统发生故障时，丢失上述信息的时间长度应不大于40 s；缩短调出画面响应时间，调出整幅画面85%的响应时间应不大于1 s，其余画面应不大于2 s；降低误码率，误码率应不大于10-9；提高分站至传感器传输距离和本安供电距离，分站至传感器及执行器之间的传输距离和供电距离应不小于2 km、或3 km、或6 km；缩短双机切换时间，从工作主机故障到备用主机投入正常工作时间应不大于40 s；提高备用电源工作时间，在电网停电后，备用电源应能保证系统连续监控时间不小于3 h；降低抗扰度试验严酷等级，静电放电抗扰度试验、射频电磁场辐射抗扰度试验、电快速瞬变脉冲群抗扰度试验、浪涌（冲击）抗扰度试验均为2级；取消可靠性要求；用于煤矿井下的监控设备必须是防爆设备等。
Abstract:
In order to further play role of coal mine safety monitoring system in gas control, AQ 6201-2006 General Technical Requirements of Coal Mine Safety Monitoring System should be amended. The main contents of proposed amendments include: increasing alarm and power-off locking function of coal and gas outburst, increasing wind direction sensor; allowing the use of optical fiber cable transmission in the system; enhancing sensor protection grade to IP65; dual host computer hot-backup and automatic switch are needed and lightning protection of underground power source is not needed; reducing transmission processing error; error rate of analog input, analog output and cumulative input transmission processing is not more than 0.5%; shortening the maximum inspection cycle of the system, which is not more than 10 s; prolonging record storage time and shortening information missing time; real-time monitoring value of methane and other important monitoring points should be kept for more than 3 months, analog value statistics and records should be kept for more than 2 years; when a system failure occurs, time length of losing above information should be not more than 40 s; shortening response time of extracting picture, response time of extracting 85% of the whole picture is less than 1 s, and response time of extracting the other pictures is less than 2 s; reducing bit error rate, which should not be greater than 10-9; increasing transmission distance from substation to sensor and power supply distance from intrinsically safe power source to substation, the transmission distance from substation to sensor and actuator and the power supply distance should be more than 2 km, or 3 km, or 6 km; shortening switch time of two computers, the time from the host fault to the backup host into normal working should be not more than 40 s; increasing working time of backup power source, when grid is blackout, the backup power source should be able to ensure that the system continuous monitoring time is not less than 3 h; reducing immunity test level, the immunity levels of electrostatic discharge, RF electromagnetic field radiation, electrical transient bursts and surge are the second level; canceling requirements of reliability; monitoring equipments used in underground coal mine must be explosion-proof.
百度学术
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