Cloud cluster positioning system of toxic and harmful gas infrared telemetering equipment

Abstract

The invention discloses a cloud cluster positioning system of toxic and harmful gas infrared telemetering equipment, which comprises two sets of equipment, and each set of equipment comprises a passive Fourier infrared spectrum module, an infrared lens, an infrared camera, a positioning module, a rotary table, an upper computer, a wireless communication module and a communication line. The positioning module is used for obtaining the longitude, latitude and course angle of the equipment, the rotary table adjusts the detection orientation of the passive Fourier infrared spectrum module in real time, when harmful gas is detected, alarm information and orientation information are transmitted to the upper computer, and the upper computer contains a map and can display the positions of the two sets of equipment and the alarm orientation on the map. The distance between the cloud cluster and the two devices and the center position of the cloud cluster are obtained through calculation, the diffusion trend of the gas cloud cluster is analyzed, and harm of harmful gas cloud clusters to surrounding residents and other places is prevented.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of gas detection, and particularly relates to a cloud cluster positioning system of a toxic and harmful gas infrared remote sensing equipment. BACKGROUND

[0002] At present, China has a large economic scale, and the industrialization level is gradually improved. With the development of China, chemical industry accidents occur frequently, which can cause harmful gas leakage. The harmful gas can cause great loss to human beings and the environment.

[0003] At present, most gas detection equipment is contact type. The main contact type gas detection technologies include electrochemical type, semiconductor type, photoionization type, ion mobility spectrum type, etc.

[0004] The electrochemical sensor is when the measured gas enters the sensor, an electrochemical reaction occurs in the sensor, thereby converting the measured gas content into an electric current (or voltage) signal output. However, the output signal of the sensor is often not zero even in a clean environment. This current signal is usually referred to as the background current. It is a randomly changing signal, and its instability is affected by temperature changes and related to the action time.

[0005] The semiconductor gas sensor is made by using the oxidation-reduction reaction of gas on the surface of the semiconductor to cause the resistance value of the sensitive element to change. When the semiconductor device is heated to a stable state, when the gas contacts the semiconductor surface and is adsorbed, the adsorbed molecules first diffuse freely on the surface of the object, lose kinetic energy, and a part of the molecules are evaporated, and the remaining molecules are adsorbed on the surface of the object. When the work function of the semiconductor is less than the affinity of the adsorbed molecules, the adsorbed molecules will take away electrons from the device and become negative ions adsorbed, and the semiconductor surface presents a charge layer.

[0006] The ion mobility spectrum sample is brought into the ionization reaction zone by the carrier gas. The carrier gas molecules and sample molecules undergo a series of ionization reactions and ion-molecule reactions under the action of the ion source, forming various product ions. Under the drive of the electric field, these ions enter the drift region through the periodically opened ion gate. In the process of constantly colliding with the counter-flow neutral drift gas molecules, different ions are separated and reach the collection electrode for detection due to the different migration rates of these ions in the electric field.

[0007] There is a certain risk in using contact instruments to detect unknown hazardous gas leaks. Non-contact detection instruments can effectively avoid contact with harmful gases and identify gas components without contact, greatly ensuring personnel safety. Passive Fourier infrared spectroscopy technology measures gas clouds against the background of the sky and various ground objects, and uses the infrared radiation or absorption characteristics of harmful gases relative to the surrounding environment to analyze their components. Passive Fourier infrared spectroscopy technology is based on the Fourier transform of the infrared spectrum after interference. By measuring the interference pattern and performing Fourier transform on the interference pattern, a spectrum is obtained, thereby analyzing various forms of substances. The main component is the interferometer. After the infrared radiation enters the interferometer, it is split into two beams of light in mutually perpendicular directions by a beam splitter. One beam of light is reflected and returned by the fixed mirror, and the other beam of light is reflected by the moving mirror and then reflected by the splitter to the detector with the light of the fixed mirror. Therefore, the two light waves with a certain time displacement will interfere with each other on the detector. The detector detects the intensity signal of the interference light, which is then subjected to Fourier transform operation to obtain the spectrum to be measured. After data processing, the spectrum is extracted to analyze the gas composition. Passive Fourier transform infrared spectroscopy can determine gas composition without direct contact with the gas. Since many hazardous gases are colorless, leaks into the wild cannot be detected immediately, nor can the location of leaking gas clouds be determined. Currently, there is no commercially available equipment that can locate gas clouds. Summary of the Invention

[0008] In view of this, the present invention provides a cloud positioning system for infrared remote sensing equipment of toxic and harmful gases, which can analyze the diffusion trend of gas clouds and prevent harmful gas clouds from causing harm to surrounding residents and other places.

[0009] The technical solutions for implementing the present invention are as follows:

[0010] A cloud positioning system for infrared remote sensing equipment for toxic and hazardous gases, comprising two sets of equipment, each set of which includes a passive Fourier infrared spectroscopy module, an infrared lens, an infrared camera, a positioning module, a turntable, a host computer, a wireless communication module, and a communication line;

[0011] The infrared signal passes through the infrared lens and enters the passive infrared spectrum module for infrared signal processing. The infrared camera is installed in the passive Fourier infrared spectrum module to obtain images of the passive infrared spectrum module scanning area and can also obtain video images in the absence of light.

[0012] The positioning module is used to acquire the latitude, longitude and heading angle of the equipment, the turntable adjusts the detection direction of the passive Fourier infrared spectrum module in real time, and when harmful gas is detected, alarm information and direction information are transmitted to the upper computer, the upper computer contains a map, and the positions of the two sets of equipment and the alarm direction can be displayed on the map, the distance of the cloud mass from the two equipment and the center position of the cloud mass are obtained by calculation, the diffusion trend of the gas cloud is analyzed, and harm of the harmful gas cloud to surrounding residents and other places is prevented.

[0013] Further, the passive infrared spectrum module, the positioning module and the turntable are connected to the upper computer through a communication line, and the wireless communication module is connected to the upper computer, and the wireless communication module is used for data transmission between the two sets of equipment.

[0014] Further, the two sets of equipment are installed in an open and wide field of view position without shielding, and the distance between the equipment is between 100 meters and 3 kilometers.

[0015] Further, the positioning module direction and the horizontal zero-degree angle position of the turntable are installed in parallel, after the equipment is started, after the self-checking of the positioning module is completed, the positioning information and the heading angle information are started to be output to the upper computer, and the positioning accuracy is less than 10 meters.

[0016] Further, the latitude and longitude coordinates of the two sets of equipment are (lat1, lon1) and (lat2, lon2), the alarm angle of the first set of equipment is a1, the alarm angle range is θ1, the alarm angle of the second set of equipment is a2, and the alarm angle range is θ2.

[0017] When the passive Fourier infrared spectrum module alarms, the alarm data is recorded, if the detection angle a1 alarms, the alarm range [a1-0.25, a1+0.25] is drawn on the map of the upper computer; the 3-kilometer range measured by the equipment is considered as a plane for calculation; the coordinates of the equipment 1 are set as (0, 0), and then the coordinates of the equipment 2 are ((lat2-lat1)*111*cos(lat1)*10 3 , (lon2-lon1)*111*10 3 );

[0018] The straight line functions corresponding to the two boundary lines of the alarm range detected by the equipment 1 are y1=tan(a1)*x1 and y2=tan(a1+θ1)*x2.

[0019] The parameters k1=tan(a1) and k2=tan(a1+θ1) in the straight line obtained by the equipment 1 are y1=k1*x1 and y2=k2*x2.

[0020] The straight line functions corresponding to the two boundary lines of the alarm range detected by the equipment 2 are y3=tan(180-a2)*x3+(lon2-lon1)*111*10 3tan (180 - a2) * (lat2 - lat1) * 111 * cos (lat1) * 10 3 tan (180 - a2 - theta2) * (lat2 - lat1) * 111 * cos (lat1) * 10 3 tan (180 - a2 - theta2) * (lat2 - lat1) * 111 * cos (lat1) * 10 3 ;

[0021] The parameter k3 of the straight line sought by the equipment 2 is tan (180 - a2), and b3 is (lon2 - lon1) * 111 * 10 3 tan (180 - a2) * (lat2 - lat1) * 111 * cos (lat1) * 10 3 k4 = tan (180 - a2 - theta2), and b4 is (lon2 - lon1) * 10 3 tan (180 - a2 - theta2) * (lat2 - lat1) * 111 * cos (lat1) * 10 3 ;

[0022] The vertices of the irregular quadrilateral obtained are

[0023] The distance between the equipment 1 and the gas cloud is The coordinates of the equipment 2 are set as (m, n), wherein m = (lat2 - lat1) * 111 * cos (lat1) * 10 3 n = (lon2 - lon1) * 111 * 10 3 The distance between the equipment 2 and the gas cloud is

[0024] The longitude and latitude coordinates of the center position of the gas cloud are

[0025] Beneficial effects:

[0026] 1. The cloud positioning system of the toxic and harmful gas infrared remote measuring equipment provided by the application is used for obtaining the longitude and latitude and heading angle of the equipment through a positioning module, the positioning module is installed on a rotating table and is parallel to the zero-degree angle of the rotating table; the rotating table is used for adjusting the detection direction of a passive Fourier infrared spectrum module in real time; the passive Fourier infrared spectrum module is installed with an infrared camera; the infrared camera can observe the surrounding environment day and night and has an auxiliary effect on detecting high and low temperature gases.

[0027] 2, The passive Fourier infrared spectrum module of the application can detect a gas cloud group with a distance greater than 3 kilometers, and the gas cloud group and background signals such as the sky and high mountains enter the passive Fourier infrared spectrum module through the infrared lens, and the gas position is obtained after signal collection and analysis, and the communication data is transmitted to the upper computer through the communication line; the upper computer contains a map, and can display the equipment position and alarm position on the map, and the wireless communication module is used to transmit the alarm information of the equipment to another equipment; the transmission distance of the wireless communication module is more than 5 kilometers; the upper computer obtains the distance of the cloud group from the two devices and the center position of the cloud group by receiving the communication data and calculating.

[0028] 3, The center position deviation of the cloud group is less than 10 meters, the harmful gas leakage source can be located, the real-time position of the gas cloud group can be located, the diffusion trend of the gas cloud group can be analyzed, and the harm of the harmful gas cloud group to the surrounding residents and other places can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the equipment schematic diagram of the application.

[0030] Figure 2 It is the system working schematic diagram of the application.

[0031] In the figure: 1: passive Fourier infrared spectrum module; 2: infrared lens; 3: infrared camera; 4: positioning module; 5: turntable; 6: tripod; 7: upper computer; 8: wireless communication module; 9: communication line; 11: equipment 1; 12: equipment 2; 13: gas cloud group. DETAILED DESCRIPTION

[0032] The application will be described in detail below with reference to the drawings and examples.

[0033] As Figure 1 shown, the application provides a cloud group positioning system of toxic and harmful gas infrared telemetry equipment, which contains two sets of equipment, each set of equipment includes a passive Fourier infrared spectrum module, an infrared lens, an infrared camera, a positioning module, a turntable, a tripod, an upper computer, a wireless communication module and a communication line.

[0034] The passive infrared spectrum module is installed above the turntable, the turntable can adjust the detection direction of the passive infrared spectrum module, the infrared lens can transmit the infrared signal into the passive infrared spectrum module for infrared signal processing, and the infrared camera is installed in the passive Fourier infrared spectrum module, which can obtain the image of the scanning area direction of the passive infrared spectrum module, and can also obtain the video image in the absence of light.

[0035] The positioning module is fixed on the side of the turntable, which is used to obtain the current position latitude and longitude coordinates and heading angle of the equipment.

[0036] Passive infrared spectrum module, positioning module and turntable are connected to the host computer through communication line, and the wireless communication module is connected to the host computer, and the wireless communication module is used for data transmission between the two equipments.

[0037] The two sets of equipment are installed in an open and wide field of view position without shielding, and the distance between the equipment is between 100m and 3km.

[0038] The direction of the positioning module and the horizontal zero degree angle position of the turntable are installed in parallel, and after the equipment is started, the positioning information and the heading angle information are output to the host computer after the self-checking of the positioning module is completed, and the positioning accuracy is less than 10m.

[0039] The transmission angle of the turntable is an absolute angle, the turntable has a slip ring and can rotate 360 degrees, the rotation speed is adjustable at 0-20 degrees per second, and the scanning range can be set.

[0040] The communication transmission distance of the wireless communication module is not less than 5km.

[0041] The tripod has a fixed turntable function.

[0042] The passive infrared spectrum module is a point detection type monitoring module with a field of view angle of 0.5 degrees, and the cloud distance can be measured to be not less than 3km, and the detection frequency is 10HZ.

[0043] As shown in Figure 2 The system working schematic diagram is shown, and the fan-shaped area is the harmful gas angle detected by the equipment.

[0044] The two equipments start to work, the turntable performs area scanning, and the rotation angle of the turntable and the gas alarm information measured by the passive Fourier infrared spectrum module are transmitted to the host computer. The continuous alarm information is saved as an angle range θ, and the measured range is drawn on the host computer interface, and the above information is transmitted to the other equipment through the wireless communication module, and the latitude and longitude and the distance of the gas cloud from the two equipments are obtained through calculation and analysis.

[0045] The latitude and longitude coordinates of the two equipments are (lat1, lon1) and (lat2, lon2), the alarm angle of the first equipment is α1, the alarm angle range is θ1, the alarm angle of the second equipment is α2, and the alarm angle range is θ2.

[0046] The passive Fourier infrared spectrum module records the alarm data when it alarms, and if the detection angle α1 alarms, the alarm range is [α1-0.25, α1+0.25] on the host computer map. The coordinates and distance of the gas cloud are calculated according to the intersection of the alarm regions of the two equipments.

[0047] Because the measured distance is much smaller than the radius of the earth, the effect of the earth's spherical shape is ignored, and the 3km range measured by the equipment is calculated as a plane. The latitude and longitude coordinates are different, and the distance represented by each degree of latitude is different, so we convert them to the Cartesian coordinate system in meters for calculation. Set the coordinates of equipment 1 as (0, 0), then the coordinates of equipment 2 are ((lat2-lat1)*111*cos(lat1)*10 3 , (lon2-lon1)*111*10 3 ).

[0048] The straight line functions corresponding to the two boundary lines of the alarm range detected by equipment 1 are y1=tan(α1)*x1 and y2=tan(α1+θ1)*x2.

[0049] The parameters k1=tan(α1) and k2=tan(α1+θ1) in the straight line obtained by equipment 1 are k1=tan(α1) and k2=tan(α1+θ1), so y1=k1*x1 and y2=k2*x2

[0050] The straight line functions corresponding to the two boundary lines of the alarm range detected by equipment 2 are y3=tan(180-α2)*x3+(lon2-lon1)*111*10 3 -tan(180-α2)*(lat2-lat1)*111*cos(lat1)*10 3 , y4=tan(180-α2-θ2)*x4+(lon2-lon1)*111*10 3 -tan(180-α2-θ2)*(lat2-lat1)*111*cos(lat1)*10 3 .

[0051] The parameters k3=tan(180-α2), b3=(lon2-lon1)*111*10 3 -tan(180-α2)*(lat2-lat1)*111*cos(lat1)*10 3 , k4=tan(180-α2-θ2), and b4=(lon2-lon1)*10 3 -tan(180-α2-θ2)*(lat2-lat1)*111*cos(lat1)*10 3 .

[0052] The vertices of the irregular quadrilateral obtained are

[0053] The distance between equipment 1 and the gas cloud can be obtained as Set the coordinates of device 2 to (m,n), where m = (lat2-lat1)*111*cos(lat1)*10 3 , n=(lon2-lon1)*111*10 3 , the distance between equipment 2 and the gas cloud is

[0054] The longitude and latitude coordinates of the center of the gas cloud are

[0055] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cloud positioning system for infrared remote sensing equipment of toxic and harmful gases, characterized in that: It includes two sets of equipment, each set of equipment includes a passive Fourier infrared spectroscopy module, infrared lens, infrared camera, positioning module, turntable, host computer, wireless communication module and communication line; The infrared signal passes through the infrared lens and enters the passive infrared spectrum module for infrared signal processing. The infrared camera is installed in the passive Fourier infrared spectrum module to obtain images of the passive infrared spectrum module scanning area and can also obtain video images in the absence of light. The positioning module is used to obtain the latitude, longitude and heading angle of the equipment. The turntable adjusts the detection direction of the passive Fourier infrared spectroscopy module in real time. When harmful gas is detected, the alarm information and direction information are transmitted to the host computer. The host computer contains a map and can display the positions of the two sets of equipment and the alarm position on the map. By calculating the distance between the cloud and the two devices and the center position of the cloud, the diffusion trend of the gas cloud is analyzed to prevent the harmful gas cloud from causing harm to surrounding residents and other places.

2. The cloud positioning system according to claim 1, wherein: The passive infrared spectrum module, the positioning module and the turntable are connected to the host computer through a communication line. The wireless communication module is connected to the host computer. The wireless communication module is used for data transmission between the two devices.

3. The cloud positioning system according to claim 2, wherein: The two sets of equipment are installed in unobstructed and open-view locations, with the distance between the equipment ranging from 100 meters to 3 kilometers.

4. The cloud positioning system according to claim 3, wherein: The positioning module is installed parallel to the horizontal zero-degree angle position of the turntable. After the equipment is turned on, the positioning module will start to output positioning information and heading angle information to the upper computer after the self-test is completed. The positioning accuracy is less than 10 meters.

5. The cloud positioning system according to claim 3 or 4, characterized in that: The longitude and latitude coordinates of the two devices are (lat1, lon1) and (lat2, lon2). The first device has an alarm angle of α1 and an alarm angle range of θ1. The second device has an alarm angle of α2 and an alarm angle range of θ2. The passive Fourier infrared spectroscopy module records the alarm data when it alarms. If the detection angle is α1 during the alarm, the alarm range drawn on the host computer map is [α1-0.25, α1+0.25]. The 3-kilometer range measured by the equipment is considered to be a plane for calculation. The coordinates of equipment 1 are set to (0,0), then the coordinates of equipment 2 are ((lat2-lat1)*111*cos(lat1)*10 3 , (lon2-lon1)*111*10 3 ); The linear functions corresponding to the two boundary lines of the alarm range detected by equipment 1 are y1 = tan(α1)*x1, y2 = tan(α1+θ1)*x2; The parameters of the straight line found by equipment 1 are k1 = tan(α1), k2 = tan(α1 + θ1), so y1 = k1 * x1, y2 = k2 * x2; The linear function corresponding to the two boundary lines of the alarm range detected by equipment 2 is y3=tan(180-α2)*x3+(lon2-lon1)*111*10 3 -tan(180-α2)*(lat2-lat1)*111*cos(lat1)*10 3 , y4=tan(180-α2-θ2)*x4+(lon2-lon1)*111*10 3 -tan(180-α2-θ2)*(lat2-lat1)*111*cos(lat1)*10 3 ; The parameters of the straight line obtained by equipment 2 are k3=tan(180-α2), b3=(lon2-lon1)*111*10 3 -tan(180-α2)*(lat2-lat1)*111*cos(lat1)*10 3 , k4=tan(180-α2-θ2), b4=(lon2-lon1)*10 3 -tan(180-α2-θ2)*(lat2-lat1)*111*cos(lat1)*10 3 ; The vertices of the obtained irregular quadrilateral are Then the distance between equipment 1 and the gas cloud is Set the coordinates of device 2 to (m,n), where m = (lat2-lat1)*111*cos(lat1)*10 3 , n=(lon2-lon1)*111*10 3 , the distance between equipment 2 and the gas cloud is The longitude and latitude coordinates of the center of the gas cloud are

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