WO2015172750A1 - Electromagnetic radiation detection apparatus for hidden fire danger in mine, and method therefor - Google Patents
Electromagnetic radiation detection apparatus for hidden fire danger in mine, and method therefor Download PDFInfo
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- WO2015172750A1 WO2015172750A1 PCT/CN2015/083026 CN2015083026W WO2015172750A1 WO 2015172750 A1 WO2015172750 A1 WO 2015172750A1 CN 2015083026 W CN2015083026 W CN 2015083026W WO 2015172750 A1 WO2015172750 A1 WO 2015172750A1
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- 230000005670 electromagnetic radiation Effects 0.000 title claims abstract description 63
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 claims abstract 4
- 238000012360 testing method Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 6
- 231100001261 hazardous Toxicity 0.000 claims description 6
- 239000013598 vector Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013500 data storage Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003703 image analysis method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
Definitions
- the invention relates to a fire detecting device and method, in particular to a mine hidden fire danger electromagnetic radiation detecting device and method.
- Mine fires include external fires and internal fires. Internal fires are fires that occur under certain conditions of coal with spontaneous combustion tendency. They are characterized by latent and sudden nature. Mine fires often lead to casualties, equipment losses, mine shutdowns, resource destruction, and even gas, coal dust or sulfide dust explosions, which have an important impact on mine production and personnel safety. Due to the relatively small space under the mine and the special environment under the mine, it is difficult to accurately understand the hidden fire hazard and fire situation. Therefore, the use of fire detection technology for concealed fire detection is an important means for the mine to find fire to understand the fire.
- the current mine fire hazard detection methods mainly include: (1) Temperature method, which is a method for determining the natural fire hazard and area of the coal seam based on the temperature change of the measured area. This method is mainly used for early forecasting and cannot detect the extent of hidden fire or fire hazards.
- (2) Visible light image analysis method uses the visible light image for fire analysis. Since the visible light image has little correlation with the thermal characteristics of the fire, there are defects in which the algorithm is complicated and the accuracy is not high.
- (3) Infrared analysis and detection The infrared temperature is used to obtain the temperature of the object, and it is judged whether the fire threshold is exceeded or not.
- Such detection devices are mostly implemented by near-infrared temperature measuring instruments, which are seriously affected by the distance and cannot accurately detect the fire source.
- Indicator gas analysis method which uses a combination of beam tube monitoring system, manual sampling analysis, mine monitoring system and other means to obtain various types of mass change gas, the concentration and ratio of certain gases generated during the spontaneous combustion of coal. The characteristic parameters such as the rate of occurrence are mathematically analyzed.
- the beam tube is easily damaged by coal and rock, and it is impossible to detect the fire hazard of the deep coal body and the goaf.
- the object of the present invention is to provide a concealed fire hazard detecting device and method with high detection accuracy and being easy to carry.
- the object of the present invention is achieved as follows: the content includes: detecting device and detecting method; mine hidden
- the fire electromagnetic radiation detecting device is composed of a vertically oriented receiving antenna group and a monitoring host; the monitoring host includes a preamplifier, a filter, an A/D converter, a buffer register, a CPU, a data memory, a display, a communication port, a keyboard, and a power supply.
- the mutually perpendicularly oriented receiving antennas are divided into antennas No. 1 and No. 2, and antennas No. 1 and No. 2 are respectively connected in series with the preamplifier and the filter to form two antenna groups, and the two antenna groups connected in series are connected in parallel.
- the A/D converter is connected in series with the A/D converter, and the A/D converter is connected in series with the buffer register and the CPU.
- the data memory, the display, the communication port, and the keyboard are connected in parallel to the CPU, and the power supply supplies power to the monitoring host.
- the monitoring host of the further mine concealed fire electromagnetic radiation detecting device synchronously collects the electromagnetic radiation components E 1 and E 2 received from the antenna No. 1 and the antenna No. 2 , and the vector superimposed values of the components E 1 and E 2 are the effective receiving quadrant regions of the antenna group.
- the data storage of the mine hidden fire danger electromagnetic radiation detecting device is installed in the CPU, the monitoring host is provided with an input keyboard for inputting critical electromagnetic radiation parameters, and the monitoring host is equipped with a fireproof outer casing, which can adjust the device according to different mine conditions. Power size.
- Mine concealed fire hazard electromagnetic radiation detection method at the selected measuring point, the effective receiving direction of antenna 1 and antenna 2 is directed toward the detection area, and the electromagnetic radiation value and its main direction of the area are tested and calculated; the main direction of different measuring points The intersection is a potentially hazardous area.
- Mine concealed fire hazard electromagnetic radiation detection device and method detect the risk and scope of mine concealed fire from time and space, and can carry out non-contact continuous detection of concealed fire hazards and areas inside and outside the goaf
- the device is low in cost and easy to produce, and greatly saves the cost and budget of the mine in concealed fire detection;
- the device is simple to operate, is not limited by the small space under the well and the special environment of the underground, and the detection process has no influence on the production;
- the device can synchronize Process and analyze the electromagnetic radiation index values and their dynamic trends during the detection process, analyze and judge the fire hazard in the potentially dangerous area in real time, and quickly and accurately realize the detection and early warning of mine fire hazard;
- the device can pass multiple tests of electromagnetic radiation
- the dynamic trend of indicators reflects mine fire changes and tests the effectiveness of mine fire prevention; the efficient and rapid detection and early warning of the device and method will bring huge social and economic benefits to the mine.
- FIG. 1 is a schematic structural view of a mine concealed fire hazard electromagnetic radiation detecting device of the present invention.
- FIG. 2 is a schematic view showing the arrangement of an electromagnetic radiation detecting device in the goaf of the present invention.
- FIG. 3 is a block diagram of a process for detecting a hidden fire hazard electromagnetic radiation of a mine according to the present invention.
- FIG. 1 is a schematic structural diagram of a mine concealed fire hazard electromagnetic radiation detecting device, which includes: a detecting device and a detecting method; the mine concealed fire electromagnetic radiation detecting device is composed of mutually perpendicularly oriented receiving antenna groups and a monitoring host; the monitoring host includes the front Amplifier, filter, A/D converter, buffer register, CPU, data memory, display, communication port, keyboard and power supply; wherein the vertically oriented receiving antennas are divided into antenna 1 and antenna 2, antenna 1 and 2 The antennas are respectively connected in series with the preamplifier and the filter to form two antenna groups. The two antenna groups connected in series are connected in parallel and then connected in series with the A/D converter. The A/D converter is connected in series with the buffer register and the CPU. The data memory, display, communication port, and keyboard are connected in parallel to the CPU, and the power supply supplies power to the monitoring host.
- FIG. 2 is a schematic view of the arrangement of the electromagnetic radiation detecting device in the goaf.
- the worker carries the mine hidden fire hazard electromagnetic radiation detecting device to the predetermined place for detection, as shown in the position of the monitoring host in the figure.
- the effective receiving direction of antenna 1 and antenna 2 is directed to the monitoring area, and the monitoring host synchronously collects the electromagnetic radiation components E 1 and E 2 received from antennas 1 and 2 , and the components E 1 and E 2 vectors.
- a bracket can be mounted under the antenna to adjust the height of the antenna and the test distance.
- the No. 1 antenna and the No. 2 antenna effectively receive the quadrant area as shown by the dotted line in the figure, and the main direction of the electromagnetic radiation is the solid line position as shown in the figure.
- the data storage of the mine hidden fire danger electromagnetic radiation detecting device is installed in the CPU.
- the monitoring host is provided with an input keyboard for input of critical electromagnetic radiation parameters.
- the monitoring host is equipped with a fireproof outer casing, which can adjust the power of the device according to different mine conditions. . Install the control program in the data memory.
- Mine concealed fire hazard electromagnetic radiation detection method select two measuring points as shown in the figure, place the detecting device at the selected measuring point, and direct the effective receiving direction of antenna 1 and antenna 2 toward the detection area, test and Calculate the electromagnetic radiation value of the area and its main direction; the intersection of the main directions of the two measuring points is a potentially dangerous area, as shown by the circular area in the figure.
- Mine concealed fire hazard electromagnetic radiation detection method based on the average value of electromagnetic radiation indicators in potential hazardous areas and the dynamic trend of multiple tests, using the critical value method and dynamic trend method to determine the average value of electromagnetic radiation indicators in potential hazardous areas and multiple times The dynamic trend of the test; when the electromagnetic radiation index value or the dynamic change trend exceeds the corresponding critical value, it is determined that there is a fire hazard in the area.
- Figure 3 is a block diagram of the process of mine concealed fire hazard electromagnetic radiation detection method. For the following four steps.
- the first step device layout, the antenna No. 1 and No. 2 antenna are fixed on the pre-selected measuring points, and large electrical equipment is avoided in the vicinity of the measuring point to prevent the receiving signal of the antenna from being interfered.
- the distance between the antenna and the measured area depends on the site conditions and the size of the area being measured.
- the detection device is turned on, the built-in software is initialized, and the program starts running. During operation, the system will prompt the operation steps, and the display shows the operation process and the detection result.
- the second step parameter input, input the critical electromagnetic radiation intensity value E L and the critical pulse value N L, the critical electromagnetic radiation intensity growth rate P e , the critical electromagnetic radiation pulse number growth rate P n , the detection time T, the amplification factor through the input keyboard M.
- the third step: detection and data processing, the No. 1 antenna and the No. 2 antenna will amplify the electromagnetic radiation information received on the site through the preamplifier, filter and A/D converter processing, transfer to the buffer register, and the CPU reads the antenna No. 1 And the electromagnetic radiation components E 1 and E 2 received by the antenna No. 2 , calculate the vector superposition values of the components E 1 and E 2 in the time period, thereby obtaining the electromagnetic radiation values in the effective receiving quadrant region of the antenna No. 1 and the antenna No. 2; E.
- the fourth step judging the potential dangerous area, adjusting the measuring point, and based on the electromagnetic radiation information received by the antenna group , the monitoring host calculates and analyzes the average value of the electromagnetic radiation intensity in the potentially dangerous area. Or the average value of the pulse number N and the growth rate ⁇ E, ⁇ N of the dynamic change, the critical value judgment and the dynamic trend determination method are used to determine the fire risk of the potentially dangerous area.
Abstract
An electromagnetic radiation detection apparatus for hidden fire danger in a mine, and a method therefor, said apparatus and method being for fire detection. The detection apparatus comprises a group of mutually-perpendicular receiving antennas and a main monitoring machine. The detection method is: at designated measurement points, orienting the effective receiving direction of the group of mutually-perpendicular receiving antennas toward a detection area, and measuring and calculating the value and the primary direction of electromagnetic radiation, the intersection of primary directions in respect of different measurement points indicating a potential danger area. On the basis of the average value of electromagnetic radiation indicators of a potential danger area and on the basis of a trend shown by multiple dynamic change measurements, a determination is made by means of a critical value and the trend in dynamic change. When an electromagnetic radiation indicator value or the trend in dynamic change exceeds a corresponding critical value, it is determined that the danger of fire is present in said area. The present method can be used to detect, temporally and spatially, hidden fire danger and fire danger areas in a mine. The method is highly effective and convenient.
Description
本发明涉及一种火灾探测装置及方法，特别是一种矿井隐蔽火灾危险电磁辐射探测装置及方法。The invention relates to a fire detecting device and method, in particular to a mine hidden fire danger electromagnetic radiation detecting device and method.
对于煤层和采空区煤炭升温和燃烧的探测及预警，具体涉及一种矿井隐蔽火灾危险电磁辐射探测装置及方法。For the detection and early warning of coal heating and combustion in coal seams and goafs, it relates to a mine hidden fire hazard electromagnetic radiation detecting device and method.
矿井火灾包括外部火灾和内部火灾，内部火灾是有自燃倾向的煤炭在一定条件下发生的火灾，具有潜伏性、突发性等特点。矿井火灾常导致人员伤亡、设备损失、矿井停产、资源破坏、甚至引起瓦斯、煤尘或硫化矿尘爆炸，对矿井生产和人员安全有重要影响。由于矿井井下相对狭小的空间和井下特殊的环境，很难准确了解隐蔽火灾危险性和火势情况，所以运用火灾探测技术进行隐蔽火灾探测是矿井发现火灾了解火灾的重要手段。Mine fires include external fires and internal fires. Internal fires are fires that occur under certain conditions of coal with spontaneous combustion tendency. They are characterized by latent and sudden nature. Mine fires often lead to casualties, equipment losses, mine shutdowns, resource destruction, and even gas, coal dust or sulfide dust explosions, which have an important impact on mine production and personnel safety. Due to the relatively small space under the mine and the special environment under the mine, it is difficult to accurately understand the hidden fire hazard and fire situation. Therefore, the use of fire detection technology for concealed fire detection is an important means for the mine to find fire to understand the fire.
当前的矿井火灾危险探测方法主要有：(1)温度法，即根据所测区域的温度变化情况，确定煤层自然发火危险及区域的方法。这种方法主要用于早期预报，不能探测隐蔽火源或火灾危险的范围。(2)可见光图像分析法利用可见光图像进行火灾分析，由于可见光图像与火灾热特性关联不大，存在算法复杂，准确率不高的缺陷。(3)红外分析探测利用红外探测得到物体温度，判断是否超过火灾阈值，进行火灾预警。此种探测装置多采用近红外测温仪器实现，受距离影响严重，无法准确探测火源。(4)航天遥感技术作为煤矿(田)火区探测技术，由于分辨率低一直处于研究应用阶段，到现在也没有能够作为一种煤火探测新技术而得到推广和有关部门认可。(5)指标气体分析法，即利用束管监测系统、人工采样分析、矿井监控系统等多种手段相结合获取各类质变气体，通过煤自燃发火过程中生成的某些气体的浓度、比值、发生速率等特征参数进行数学分析。但在探测过程中束管易受到煤岩损坏，不能探测深部煤体及采空区的火灾危险性。The current mine fire hazard detection methods mainly include: (1) Temperature method, which is a method for determining the natural fire hazard and area of the coal seam based on the temperature change of the measured area. This method is mainly used for early forecasting and cannot detect the extent of hidden fire or fire hazards. (2) Visible light image analysis method uses the visible light image for fire analysis. Since the visible light image has little correlation with the thermal characteristics of the fire, there are defects in which the algorithm is complicated and the accuracy is not high. (3) Infrared analysis and detection The infrared temperature is used to obtain the temperature of the object, and it is judged whether the fire threshold is exceeded or not. Such detection devices are mostly implemented by near-infrared temperature measuring instruments, which are seriously affected by the distance and cannot accurately detect the fire source. (4) As a coal mine (field) fire detection technology, aerospace remote sensing technology has been in the research and application stage due to its low resolution. Up to now, it has not been promoted as a new coal fire detection technology and recognized by relevant departments. (5) Indicator gas analysis method, which uses a combination of beam tube monitoring system, manual sampling analysis, mine monitoring system and other means to obtain various types of mass change gas, the concentration and ratio of certain gases generated during the spontaneous combustion of coal. The characteristic parameters such as the rate of occurrence are mathematically analyzed. However, during the detection process, the beam tube is easily damaged by coal and rock, and it is impossible to detect the fire hazard of the deep coal body and the goaf.
现有非接触火灾探测技术中，探测装置成本较高；并且由于传感器的布置易受矿井特殊环境的影响，以及探测区域及位置易受时空的限制，探测煤层和采空区隐蔽火灾的难度较大，对于上述问题目前尚未提出有效解决方案。In the existing non-contact fire detection technology, the cost of the detection device is relatively high; and because the arrangement of the sensor is susceptible to the special environment of the mine, and the detection area and location are susceptible to time and space constraints, it is more difficult to detect the hidden fire in the coal seam and the goaf. Big, no effective solution has been proposed for the above problems.
发明内容Summary of the invention
本发明的目的是提供一种探测准确率高、便于携带的隐蔽火灾危险探测装置及方法。The object of the present invention is to provide a concealed fire hazard detecting device and method with high detection accuracy and being easy to carry.
本发明的目的是这样实现的：内容包括：探测装置和探测方法；矿井隐
蔽火灾电磁辐射探测装置由互相垂直定向接收天线组和监控主机组成；监控主机包括前置放大器、滤波器、A/D转换器、缓冲寄存器、CPU、数据存储器、显示器、通讯端口、键盘和电源；其中互相垂直定向接收天线分为1号天线和2号天线，1号天线和2号天线分别与前置放大器和滤波器串联构成二组天线组，串联后的二组天线组并联连接后再与A/D转换器串联连接，A/D转换器与缓冲寄存器、CPU串联连接，数据存储器、显示器、通讯端口、键盘并联连接在CPU上，电源为监控主机供电。The object of the present invention is achieved as follows: the content includes: detecting device and detecting method; mine hidden
The fire electromagnetic radiation detecting device is composed of a vertically oriented receiving antenna group and a monitoring host; the monitoring host includes a preamplifier, a filter, an A/D converter, a buffer register, a CPU, a data memory, a display, a communication port, a keyboard, and a power supply. Wherein the mutually perpendicularly oriented receiving antennas are divided into antennas No. 1 and No. 2, and antennas No. 1 and No. 2 are respectively connected in series with the preamplifier and the filter to form two antenna groups, and the two antenna groups connected in series are connected in parallel. The A/D converter is connected in series with the A/D converter, and the A/D converter is connected in series with the buffer register and the CPU. The data memory, the display, the communication port, and the keyboard are connected in parallel to the CPU, and the power supply supplies power to the monitoring host.
进一步的矿井隐蔽火灾电磁辐射探测装置的监控主机同步采集来自1号天线和2号天线所接收的电磁辐射分量E1和E2，分量E1和E2矢量叠加值为天线组有效接收象限区域内电磁辐射值，电磁辐射主方向与1号天线的夹角为α且α＝arctan(E2/E1)；探测距离可根据现场情况进行调整。The monitoring host of the further mine concealed fire electromagnetic radiation detecting device synchronously collects the electromagnetic radiation components E 1 and E 2 received from the antenna No. 1 and the antenna No. 2 , and the vector superimposed values of the components E 1 and E 2 are the effective receiving quadrant regions of the antenna group. The value of the internal electromagnetic radiation, the angle between the main direction of the electromagnetic radiation and the No. 1 antenna is α and α = arctan (E 2 / E 1 ); the detection distance can be adjusted according to the site conditions.
进一步的矿井隐蔽火灾危险电磁辐射探测装置的数据存储器安装在CPU内，监控主机设有输入键盘，进行临界电磁辐射参数的输入；监控主机外部装有防火外壳，可根据不同的矿井条件调整装置的功率大小。Further, the data storage of the mine hidden fire danger electromagnetic radiation detecting device is installed in the CPU, the monitoring host is provided with an input keyboard for inputting critical electromagnetic radiation parameters, and the monitoring host is equipped with a fireproof outer casing, which can adjust the device according to different mine conditions. Power size.
矿井隐蔽火灾危险电磁辐射探测方法：在选定测点处把1号天线和2号天线的有效接收方向朝向探测区域，测试并计算该区域电磁辐射值及其主方向；不同测点主方向的交叉处即为潜在危险区域。Mine concealed fire hazard electromagnetic radiation detection method: at the selected measuring point, the effective receiving direction of antenna 1 and antenna 2 is directed toward the detection area, and the electromagnetic radiation value and its main direction of the area are tested and calculated; the main direction of different measuring points The intersection is a potentially hazardous area.
进一步的矿井隐蔽火灾危险电磁辐射探测方法，根据潜在危险区域电磁辐射指标的平均值及多次测试的动态变化趋势，采用临界值法和动态变化趋势法判定潜在危险区域电磁辐射指标的平均值及多次测试的动态变化趋势；当电磁辐射指标值或动态变化趋势超过相应的临界值时，判定该区域有火灾危险。Further methods for detecting hidden fire hazard electromagnetic radiation in mines, based on the average value of electromagnetic radiation indicators in potential hazardous areas and the dynamic trend of multiple tests, using the critical value method and dynamic trend method to determine the average value of electromagnetic radiation indicators in potentially dangerous areas and Dynamic change trend of multiple tests; when the electromagnetic radiation index value or dynamic change trend exceeds the corresponding critical value, it is determined that there is a fire hazard in the area.
有益效果：矿井隐蔽火灾危险电磁辐射探测装置及方法从时间和空间上探测矿井隐蔽火灾危险性及范围，能进行非接触式连续的探测采空区内部、深部煤体等隐蔽火灾危险性及区域；该装置成本低，易于生产，大大节省矿井在隐蔽火灾探测的经费及预算；该装置操作简单，不受井下狭小的空间和井下特殊环境的限制，探测过程对生产无影响；该装置能够同步处理并分析探测过程中的电磁辐射指标值及其动态变化趋势，实时分析和判断潜在危险区域的火灾危险性，快速准确的实现矿井火灾危险的探测及预警；该装置能通过多次测试电磁辐射指标的动态变化趋势反映矿井火灾变化，并检验矿井防灭火效果；该装置及方法的高效、快速的探测及预警，必将为矿井带来巨大的社会效益和经济效益。Beneficial effects: Mine concealed fire hazard electromagnetic radiation detection device and method detect the risk and scope of mine concealed fire from time and space, and can carry out non-contact continuous detection of concealed fire hazards and areas inside and outside the goaf The device is low in cost and easy to produce, and greatly saves the cost and budget of the mine in concealed fire detection; the device is simple to operate, is not limited by the small space under the well and the special environment of the underground, and the detection process has no influence on the production; the device can synchronize Process and analyze the electromagnetic radiation index values and their dynamic trends during the detection process, analyze and judge the fire hazard in the potentially dangerous area in real time, and quickly and accurately realize the detection and early warning of mine fire hazard; the device can pass multiple tests of electromagnetic radiation The dynamic trend of indicators reflects mine fire changes and tests the effectiveness of mine fire prevention; the efficient and rapid detection and early warning of the device and method will bring huge social and economic benefits to the mine.
图1是本发明的矿井隐蔽火灾危险电磁辐射探测装置结构示意图。1 is a schematic structural view of a mine concealed fire hazard electromagnetic radiation detecting device of the present invention.
图2是本发明采空区电磁辐射探测装置布置示意图。
2 is a schematic view showing the arrangement of an electromagnetic radiation detecting device in the goaf of the present invention.
图3是本发明矿井隐蔽火灾危险电磁辐射探测过程框图。3 is a block diagram of a process for detecting a hidden fire hazard electromagnetic radiation of a mine according to the present invention.
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互结合。下面将参考附图并结合实施例来详细说明本发明。It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
实施例1：图1是矿井隐蔽火灾危险电磁辐射探测装置结构示意图，内容包括：探测装置和探测方法；矿井隐蔽火灾电磁辐射探测装置由互相垂直定向接收天线组和监控主机组成；监控主机包括前置放大器、滤波器、A/D转换器、缓冲寄存器、CPU、数据存储器、显示器、通讯端口、键盘和电源；其中互相垂直定向接收天线分为1号天线和2号天线，1号天线和2号天线分别与前置放大器和滤波器串联构成二组天线组，串联后的二组天线组并联连接后再与A/D转换器串联连接，A/D转换器与缓冲寄存器、CPU串联连接，数据存储器、显示器、通讯端口、键盘并联连接在CPU上，电源为监控主机供电。Embodiment 1 FIG. 1 is a schematic structural diagram of a mine concealed fire hazard electromagnetic radiation detecting device, which includes: a detecting device and a detecting method; the mine concealed fire electromagnetic radiation detecting device is composed of mutually perpendicularly oriented receiving antenna groups and a monitoring host; the monitoring host includes the front Amplifier, filter, A/D converter, buffer register, CPU, data memory, display, communication port, keyboard and power supply; wherein the vertically oriented receiving antennas are divided into antenna 1 and antenna 2, antenna 1 and 2 The antennas are respectively connected in series with the preamplifier and the filter to form two antenna groups. The two antenna groups connected in series are connected in parallel and then connected in series with the A/D converter. The A/D converter is connected in series with the buffer register and the CPU. The data memory, display, communication port, and keyboard are connected in parallel to the CPU, and the power supply supplies power to the monitoring host.
图2是采空区电磁辐射探测装置布置示意图，矿井在生产或检查过程中，工作人员携带矿井隐蔽火灾危险电磁辐射探测装置到达预定地点进行探测，如图中监控主机位置所示。测试过程中将1号天线、2号天线的有效接收方向朝向监测区域，监控主机同步采集来自1号天线和2号天线所接收的电磁辐射分量E1和E2，分量E1和E2矢量叠加值为1号、2号天线有效接收象限区域内电磁辐射最大值，电磁辐射主方向与1号天线的夹角为α且α＝arctan(E2/E1)。天线下方可装有支架，可调整天线的高度和测试距离。1号天线、2号天线有效接收象限区域如图中虚线位置，电磁辐射主方向如图中实线位置。2 is a schematic view of the arrangement of the electromagnetic radiation detecting device in the goaf. During the production or inspection process, the worker carries the mine hidden fire hazard electromagnetic radiation detecting device to the predetermined place for detection, as shown in the position of the monitoring host in the figure. During the test, the effective receiving direction of antenna 1 and antenna 2 is directed to the monitoring area, and the monitoring host synchronously collects the electromagnetic radiation components E 1 and E 2 received from antennas 1 and 2 , and the components E 1 and E 2 vectors. The superimposed values are the maximum electromagnetic radiation in the effective receiving quadrant area of antennas No. 1 and No. 2, and the angle between the main direction of electromagnetic radiation and antenna No. 1 is α and α=arctan(E 2 /E 1 ). A bracket can be mounted under the antenna to adjust the height of the antenna and the test distance. The No. 1 antenna and the No. 2 antenna effectively receive the quadrant area as shown by the dotted line in the figure, and the main direction of the electromagnetic radiation is the solid line position as shown in the figure.
矿井隐蔽火灾危险电磁辐射探测装置的数据存储器安装在CPU内，监控主机设有输入键盘，进行临界电磁辐射参数的输入；监控主机外部装有防火外壳，可根据不同的矿井条件调整装置的功率大小。在数据存储器中安装控制程序。The data storage of the mine hidden fire danger electromagnetic radiation detecting device is installed in the CPU. The monitoring host is provided with an input keyboard for input of critical electromagnetic radiation parameters. The monitoring host is equipped with a fireproof outer casing, which can adjust the power of the device according to different mine conditions. . Install the control program in the data memory.
矿井隐蔽火灾危险电磁辐射探测方法：选定如图所示的2个测点，将探测装置放置在选定测点处，把1号天线和2号天线的有效接收方向朝向探测区域，测试并计算该区域电磁辐射值及其主方向；2个测点主方向的交叉处即为潜在危险区域，如图中圆形区域所示。Mine concealed fire hazard electromagnetic radiation detection method: select two measuring points as shown in the figure, place the detecting device at the selected measuring point, and direct the effective receiving direction of antenna 1 and antenna 2 toward the detection area, test and Calculate the electromagnetic radiation value of the area and its main direction; the intersection of the main directions of the two measuring points is a potentially dangerous area, as shown by the circular area in the figure.
矿井隐蔽火灾危险电磁辐射探测方法，根据潜在危险区域电磁辐射指标的平均值及多次测试的动态变化趋势，采用临界值法和动态变化趋势法判定潜在危险区域电磁辐射指标的平均值及多次测试的动态变化趋势；当电磁辐射指标值或动态变化趋势超过相应的临界值时，判定该区域有火灾危险。Mine concealed fire hazard electromagnetic radiation detection method, based on the average value of electromagnetic radiation indicators in potential hazardous areas and the dynamic trend of multiple tests, using the critical value method and dynamic trend method to determine the average value of electromagnetic radiation indicators in potential hazardous areas and multiple times The dynamic trend of the test; when the electromagnetic radiation index value or the dynamic change trend exceeds the corresponding critical value, it is determined that there is a fire hazard in the area.
图3是矿井隐蔽火灾危险电磁辐射探测方法过程框图，探测过程具体分
为以下四步。Figure 3 is a block diagram of the process of mine concealed fire hazard electromagnetic radiation detection method.
For the following four steps.
第一步：装置布置，将1号天线、2号天线固定在预先选定的测点上，测点附近避免出现大型电气设备，以防天线的接收信号受到干扰。天线与被测区域的距离根据现场情况及被测区域的大小而定。开启探测装置，内置软件初始化，程序开始运行。操作时，系统将会提示操作步骤，显示器显示操作过程及探测结果。The first step: device layout, the antenna No. 1 and No. 2 antenna are fixed on the pre-selected measuring points, and large electrical equipment is avoided in the vicinity of the measuring point to prevent the receiving signal of the antenna from being interfered. The distance between the antenna and the measured area depends on the site conditions and the size of the area being measured. The detection device is turned on, the built-in software is initialized, and the program starts running. During operation, the system will prompt the operation steps, and the display shows the operation process and the detection result.
第二步：参数输入，通过输入键盘输入临界电磁辐射强度值EL和临界脉冲值NL、临界电磁辐射强度增长率Pe、临界电磁辐射脉冲数增长率Pn、探测时间T、放大倍数M。The second step: parameter input, input the critical electromagnetic radiation intensity value E L and the critical pulse value N L, the critical electromagnetic radiation intensity growth rate P e , the critical electromagnetic radiation pulse number growth rate P n , the detection time T, the amplification factor through the input keyboard M.
第三步：探测及数据处理，1号天线、2号天线将现场接收的电磁辐射信息经前置放大器放大，滤波器和A/D转换器处理，传输至缓冲寄存器，CPU读取1号天线和2号天线所接收的电磁辐射分量E1和E2，计算该时间段内分量E1和E2的矢量叠加值，从而求得1号天线、2号天线有效接收象限区域内电磁辐射值E，电磁辐射主方向与1号天线的夹角α＝arctan(E2/E1)，2个主方向交叉处为潜在危险区域。The third step: detection and data processing, the No. 1 antenna and the No. 2 antenna will amplify the electromagnetic radiation information received on the site through the preamplifier, filter and A/D converter processing, transfer to the buffer register, and the CPU reads the antenna No. 1 And the electromagnetic radiation components E 1 and E 2 received by the antenna No. 2 , calculate the vector superposition values of the components E 1 and E 2 in the time period, thereby obtaining the electromagnetic radiation values in the effective receiving quadrant region of the antenna No. 1 and the antenna No. 2; E. The angle between the main direction of electromagnetic radiation and antenna No. 1 is α=arctan(E 2 /E 1 ), and the intersection of the two main directions is a potentially dangerous area.
第四步：潜在危险区域判定，调整测点，根据天线组接收到的电磁辐射信息，监控主机计算分析潜在危险区域电磁辐射强度的平均值
或脉冲数平均值N及其动态变化的增长率△E、△N，采用临界值判断和动态趋势判定方式，判定潜在危险区域的火灾危险性。The fourth step: judging the potential dangerous area, adjusting the measuring point, and based on the electromagnetic radiation information received by the antenna group , the monitoring host calculates and analyzes the average value of the electromagnetic radiation intensity in the potentially dangerous area. Or the average value of the pulse number N and the growth rate ΔE, ΔN of the dynamic change, the critical value judgment and the dynamic trend determination method are used to determine the fire risk of the potentially dangerous area.
具体判定条件：Specific judgment conditions:
(1) 
(1)
(2) 
(2)
(3)ΔE≥Pe
(3) ΔE≥P e
(4)ΔN≥Pn
(4) ΔN ≥ P n
具体判定结果：当4个判定条件任意满足1个及以上时则判定该区域为火灾危险区域。
Specific determination result: When four or more determination conditions satisfy one or more arbitrarily, it is determined that the area is a fire danger area.
Claims (3)
- 一种矿井隐蔽火灾危险电磁辐射探测装置，其特征是：矿井隐蔽火灾电磁辐射探测装置由互相垂直定向接收天线组和监控主机组成；监控主机包括前置放大器、滤波器、A/D转换器、缓冲寄存器、CPU、数据存储器、显示器、通讯端口、键盘和电源；其中互相垂直定向接收天线分为1号天线和2号天线，1号天线和2号天线分别与前置放大器和滤波器串联构成二组天线组，串联后的二组天线组并联连接后再与A/D转换器串联连接，A/D转换器与缓冲寄存器、CPU串联连接，数据存储器、显示器、通讯端口、键盘并联连接在CPU上，电源为监控主机供电。The utility model relates to a mine concealed fire hazard electromagnetic radiation detecting device, characterized in that: the mine concealed fire electromagnetic radiation detecting device is composed of mutually perpendicularly oriented receiving antenna groups and a monitoring host; the monitoring host comprises a preamplifier, a filter, an A/D converter, Buffer register, CPU, data memory, display, communication port, keyboard and power supply; wherein the mutually perpendicularly oriented receiving antennas are divided into antenna No. 1 and antenna No. 2, and antennas No. 1 and No. 2 are respectively connected in series with the preamplifier and the filter. Two sets of antenna groups, two sets of antenna groups connected in series are connected in parallel and then connected in series with the A/D converter. The A/D converter is connected in series with the buffer register and the CPU, and the data memory, the display, the communication port and the keyboard are connected in parallel. On the CPU, the power supply supplies power to the monitoring host.
- 根据权利要求1所述的一种矿井隐蔽火灾危险电磁辐射探测装置，其特征在于：所述的监控主机同步采集来自1号天线和2号天线所接收的电磁辐射分量E1和E2，分量E1和E2矢量叠加值为天线组有效接收象限区域内电磁辐射值，电磁辐射主方向与1号天线的夹角为α且α＝arctan(E2/E1)；探测距离可根据现场情况进行调整。The mine concealed fire hazard electromagnetic radiation detecting device according to claim 1, wherein the monitoring host synchronously collects electromagnetic radiation components E 1 and E 2 received from antennas 1 and 2 , and components. The E 1 and E 2 vector superposition values are electromagnetic radiation values in the effective receiving quadrant region of the antenna group, and the angle between the main direction of the electromagnetic radiation and the No. 1 antenna is α and α=arctan(E 2 /E 1 ); the detection distance can be based on the scene. The situation is adjusted.
- 一种根据权利要求1所述矿井隐蔽火灾危险电磁辐射探测装置的方法，其特征在于：矿井隐蔽火灾危险电磁辐射探测方法：在选定测点处把1号天线和2号天线的有效接收方向朝向探测区域，测试并计算该区域电磁辐射值及其主方向；不同测点主方向的交叉处即为潜在危险区域；A method for mine concealed fire hazard electromagnetic radiation detecting device according to claim 1, characterized in that: the mine concealed fire hazard electromagnetic radiation detecting method: the effective receiving direction of the No. 1 antenna and the No. 2 antenna at the selected measuring point To the detection area, test and calculate the electromagnetic radiation value of the area and its main direction; the intersection of the main directions of different measurement points is a potentially dangerous area;根据潜在危险区域电磁辐射指标的平均值及多次测试的动态变化趋势，采用临界值法和动态变化趋势法判定潜在危险区域电磁辐射指标的平均值及多次测试的动态变化趋势；当电磁辐射指标值或动态变化趋势超过相应的临界值时，判定该区域有火灾危险。 According to the average value of electromagnetic radiation indicators in potential hazardous areas and the dynamic trend of multiple tests, the critical value method and dynamic trend method are used to determine the average value of electromagnetic radiation indicators in potential hazardous areas and the dynamic trend of multiple tests; When the indicator value or the dynamic change trend exceeds the corresponding critical value, it is determined that there is a fire hazard in the area.
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