GNSS-based gas detection system for path planning

Abstract

The invention discloses a GNSS (Global Navigation Satellite System)-based gas detection system for path planning, which solves the technical problems that the safety of personnel cannot be guaranteed and the evacuation or rescue efficiency is low in a gas leakage place in the process of personnel evacuation or rescue implementation. Comprising a position sharing device and a plurality of advance detectors which are distributed in a gas leakage place and are respectively connected with the position sharing device. According to the invention, the advanced detector detects the type and concentration of gas in a place prior to the action of personnel, then calibrates a dangerous area and sends the position corresponding to the dangerous area to the position sharing device, and the personnel select a suitable path to evacuate or rescue according to the position of the dangerous area displayed on the position sharing device. Therefore, the personnel can avoid the dangerous area in advance, the personnel are prevented from getting close to or entering the dangerous area, the personnel safety is guaranteed, meanwhile, continuous temporary conversion of evacuation or rescue paths is avoided, and the efficiency of personnel evacuation or rescue is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas detection, and in particular relates to a gas detection system for path planning based on GNSS. Background Art

[0002] In places where toxic and harmful or flammable and explosive gases leak, the leaked gas will diffuse and migrate. When personnel evacuate or carry out rescue operations, they need to stay away from areas where toxic and harmful gases diffuse or areas with high concentrations of flammable and explosive gases to ensure personnel safety or ensure the implementation of rescue operations. Gas detection equipment is usually used to detect the type and concentration of leaked gas in the venue to identify dangerous areas with high concentrations of toxic and harmful gases or flammable and explosive gases in the venue. However, some existing gas detection equipment is usually handheld equipment, which requires personnel to personally take risks, that is, personnel simultaneously detect the type or concentration of gas during evacuation or rescue. When it is detected that the gas is highly dangerous and will poison the human body or may explode, the evacuation route or rescue route is changed. On the one hand, personnel personally take risks and are in or close to dangerous areas, and their safety cannot be guaranteed. On the other hand, according to the gas detection results, the evacuation or rescue route is constantly temporarily changed, and the efficiency of rescue or evacuation is low. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a gas detection system for path planning based on GNSS to at least solve some of the above technical problems.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A GNSS-based gas detection system for path planning includes a position sharing device worn on a person's hand, and a plurality of advance detectors distributed in a gas leakage site and respectively connected to the position sharing device; the advance detector includes a mounting seat, a data transmission mechanism arranged on the mounting seat and connected to the position sharing device, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver arranged on the mounting seat and respectively connected to the data transmission mechanism.

[0006] Furthermore, the location sharer includes an installation box, a first single-chip microcomputer arranged on the installation box, and a second satellite signal receiver, a first wireless transceiver, a first rechargeable battery and a liquid crystal touch screen arranged on the installation box and respectively connected to the first single-chip microcomputer.

[0007] Furthermore, a first installation cavity is opened on the installation box, a step is provided on the top of the first installation cavity, the first single-chip microcomputer, the first wireless transceiver, the first rechargeable battery and the second satellite signal receiver are respectively arranged in the first installation cavity, and the LCD touch screen is arranged on the step.

[0008] Furthermore, the mounting seat includes a base and a top seat, and the gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat, a gas sensor mounted on the sensor mounting mechanism, and a pumping mechanism arranged on the top seat.

[0009] Furthermore, the pump suction mechanism includes a second installation cavity opened on the base, a fan arranged in the second installation cavity and connected to the outside, an air cavity opened on the top seat and connected to the second installation cavity, threaded through holes opened circumferentially on the top seat and corresponding to the sensor installation mechanisms one by one and connected to the air cavities respectively, and a through hole opened on the top seat and connected between the air cavity and the second installation cavity; the sensor installation mechanism is threadedly connected in the threaded through hole.

[0010] Furthermore, the sensor mounting mechanism includes a threaded mounting cylinder threadedly connected to the threaded through hole, and a filtering metal membrane arranged on the threaded mounting cylinder and located outside the threaded through hole; a metal grid for supporting the filtering metal membrane is provided on the threaded mounting cylinder, and the gas sensor is arranged in the threaded mounting cylinder.

[0011] Furthermore, a third installation cavity is provided on the top seat, a fixing plate is provided at the bottom of the third installation cavity, the first satellite signal receiver is arranged on the fixing plate and is located in the third installation cavity, a first clearance hole connected to the third installation cavity is provided at the top of the top seat, and the antenna of the first satellite signal receiver extends out of the top seat through the first clearance hole.

[0012] Furthermore, a fourth installation cavity is opened on the base, and the protective mechanism includes a linear motor arranged in the fourth installation cavity, and a protective cover arranged outside the top seat and connected to the driving shaft of the linear motor; an embedding groove adapted to the protective cover is opened on the top seat.

[0013] Furthermore, the data transmission mechanism includes a second single-chip microcomputer arranged in the fourth installation cavity and connected to the first single-chip microcomputer, as well as a second rechargeable battery and a second wireless transceiver arranged in the fourth installation cavity and respectively connected to the second single-chip microcomputer, and the first satellite signal receiver, gas sensor, fan and linear motor are respectively connected to the second single-chip microcomputer.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The detector of the present invention acts before personnel, detects the type and concentration of gas in the place, calibrates the dangerous area, and sends the corresponding position of the dangerous area to the position sharing device. Personnel select a suitable path for evacuation or rescue through the position of the dangerous area displayed on the position sharing device. The use of the present invention enables personnel to avoid the dangerous area in advance, avoids personnel approaching or entering the dangerous area, ensures personnel safety, and at the same time avoids constant temporary conversion of evacuation or rescue paths, thereby improving the efficiency of personnel evacuation or rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural block diagram of the present invention.

[0017] Figure 2 Schematic diagram of the structure of the advance detector.

[0018] Figure 3 It is a schematic cross-sectional view of the gas sensors distributed circumferentially on the top seat.

[0019] Figure 4 It is a schematic cross-sectional view of threaded through holes distributed circumferentially on the top seat.

[0020] Figure 5 It is a top view of the gas detection mechanism distributed on the top seat.

[0021] Figure 6 Schematic diagram of a gas sensor located on a sensor mounting mechanism.

[0022] Figure 7 A cross-sectional view of the support plate within the threaded mounting.

[0023] Figure 8 This is a schematic diagram of the structure of the location sharer.

[0024] Fig. 9 This is a schematic diagram of the interior of the installation box.

[0025] Fig.10 A cross-sectional view of the installation box.

[0026] Fig.11 The present invention is a structural block diagram showing that the first single-chip microcomputer and the second single-chip microcomputer are wirelessly connected to each other and are respectively connected to other devices.

[0027] The names corresponding to the reference numerals are:

[0028] 1-position sharing device, 2-advance detector, 3-mounting seat, 4-first satellite signal receiver, 5-mounting box, 6-first single chip microcomputer, 7-LCD touch screen, 8-first mounting cavity, 9-step, 10-first rechargeable battery, 11-base, 12-top seat, 14-second mounting cavity, 15-fan, 16-air cavity, 17-threaded through hole, 18-through hole, 19-gas sensor, 20-threaded mounting cylinder, 21-filter metal membrane, 22-metal grid, 23-third mounting cavity, 24-fixed Plate, 25-first clearance through hole, 26-fourth mounting cavity, 27-second single-chip microcomputer, 28-second rechargeable battery, 29-linear motor, 30-protective cover, 31-first wireless transceiver, 32-embedded groove, 33-second wireless transceiver, 34-second clearance through hole, 35-bracelet, 36-mounting plate, 37-third clearance through hole, 38-second satellite signal receiver, 39-mounting frame, 40-bolt, 41-support plate, 42-input pipe, 43-output pipe, 44-threaded mounting tube cavity. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore they cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0034] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The detector of the present invention acts before personnel, detects the type and concentration of gas in the place, calibrates the dangerous area, and sends the corresponding position of the dangerous area to the position sharing device. Personnel select a suitable path for evacuation or rescue through the position of the dangerous area displayed on the position sharing device. The use of the present invention enables personnel to avoid the dangerous area in advance, avoids personnel approaching or entering the dangerous area, ensures personnel safety, and at the same time avoids constant temporary conversion of evacuation or rescue paths, thereby improving the efficiency of personnel evacuation or rescue.

[0035] The advance detector 2 of the present invention is provided with a mounting plate 36. The advance detector 2 of the present invention is used in conjunction with an external traveling trolley. When in use, the advance detector 2 of the present invention is installed on the external traveling trolley through the mounting plate 36. Through the walking function of the external traveling trolley, multiple areas in the venue are detected.

[0036] Example 2

[0037] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0038] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0039] In the present embodiment 2, the first rechargeable battery 10 is used to supply power to the first single-chip microcomputer 6, the second satellite signal receiver 38, the first wireless transceiver 31 and the liquid crystal touch screen 7. The first single-chip microcomputer 6 exchanges information with the advance detector 2 through the first wireless transceiver 31. The advance detector 2 acts before the personnel, detects the type and concentration of the leaked gas in the place, calibrates the dangerous area, and sends the location of the corresponding dangerous area to the first wireless transceiver 31 in a wireless manner. The first wireless transceiver 31 transmits the received location information to the first single-chip microcomputer 6, and the first single-chip microcomputer 6 transmits the location information of the dangerous area to the liquid crystal touch screen 7 for display. The second satellite signal receiver 38 receives the signal transmitted by the satellite group, and calculates the current location of the second satellite signal receiver 38 based on the received signal. This location can represent the current location of the location sharing device 1, and then the location of the person wearing the location sharing device 1 is obtained. The first single-chip computer 6 transmits the personnel position to the LCD touch screen 7 in real time for display. During the movement of personnel, the LCD touch screen 7 updates and displays the personnel position changes in real time. According to the position of the dangerous area and the real-time position of the personnel displayed on the LCD touch screen 7, a suitable path is selected for evacuation or rescue, which can improve the efficiency of evacuation or rescue and ensure the safety of personnel.

[0040] Example 3

[0041] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0042] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0043] A first installation cavity 8 is opened on the installation box 5 , a step 9 is provided on the top of the first installation cavity 8 , the first single chip microcomputer 6 , the first wireless transceiver 31 , the first rechargeable battery 10 and the second satellite signal receiver 38 are respectively arranged in the first installation cavity 8 , and the LCD touch screen 7 is arranged on the step 9 .

[0044] In this embodiment 3, the installation box 5 is provided with a second clearance hole 34 communicating with the first installation cavity 8, and the antenna of the second satellite signal receiver 38 extends out of the installation box 5 through the second clearance hole 34. The installation box 5 is provided with a wristband 35 for easy wearing.

[0045] Example 4

[0046] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0047] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0048] The mounting seat 3 includes a base 11 and a top seat 12 . The gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat 12 , a gas sensor 19 mounted on the sensor mounting mechanisms, and a pumping mechanism disposed on the top seat 12 .

[0049] In this embodiment 4, there are multiple gas sensors 19, which can detect different types of gases respectively and are suitable for various places. When the present invention is used, the personnel send an operation instruction to the first single-chip microcomputer 6 through the LCD touch screen 7. The first single-chip microcomputer 6 controls the operation of other devices on the position sharing device 1 according to the operation instruction, and wirelessly transmits the operation instruction to the second single-chip microcomputer 27. The second single-chip microcomputer 27 controls the operation of other devices on the advance detector 2 according to the received instruction information. The pumping mechanism is used to pass the external gas into the sensor installation mechanism, so that the gas sensor 19 in the sensor installation mechanism can contact with the gas, thereby detecting the contacted gas.

[0050] Example 5

[0051] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0052] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0053] The mounting seat 3 includes a base 11 and a top seat 12 . The gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat 12 , a gas sensor 19 mounted on the sensor mounting mechanisms, and a pumping mechanism disposed on the top seat 12 .

[0054] The pumping mechanism includes a second mounting cavity 14 opened on the base 11, a fan 15 arranged in the second mounting cavity 14 and connected to the outside, an air cavity 16 opened on the top seat 12 and connected to the second mounting cavity 14, threaded through holes 17 circumferentially opened on the top seat 12 and corresponding to the sensor mounting mechanisms one by one and connected to the air cavity 16 respectively, and a through hole 18 opened on the top seat 12 and connected between the air cavity 16 and the second mounting cavity 14; the sensor mounting mechanism is threadedly connected to the threaded through hole 17.

[0055] In this embodiment 5, under the action of the fan 15, the external gas flows through the inner cavity 44 of the threaded mounting tube, the air cavity 16, the through hole 18 and the second mounting cavity 14 in sequence, and is finally discharged to the outside through the fan 15. During the gas circulation process, the gas sensor 19 on the sensor mounting mechanism detects the passing gas.

[0056] In the present embodiment 5, the second installation cavity 14 is formed by installing the installation frame 39 in the base 11, and the installation frame 39 is connected to the base 11 by bolts 40. The fan 15 is connected with an input pipe 42 and an output pipe 43, the output pipe 43 is connected to the outside, and the input pipe 42 is connected to the second installation cavity 14.

[0057] Example 6

[0058] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0059] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0060] The mounting seat 3 includes a base 11 and a top seat 12 . The gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat 12 , a gas sensor 19 mounted on the sensor mounting mechanisms, and a pumping mechanism disposed on the top seat 12 .

[0061] The pumping mechanism includes a second mounting cavity 14 opened on the base 11, a fan 15 arranged in the second mounting cavity 14 and connected to the outside, an air cavity 16 opened on the top seat 12 and connected to the second mounting cavity 14, threaded through holes 17 circumferentially opened on the top seat 12 and corresponding to the sensor mounting mechanisms one by one and connected to the air cavity 16 respectively, and a through hole 18 opened on the top seat 12 and connected between the air cavity 16 and the second mounting cavity 14; the sensor mounting mechanism is threadedly connected to the threaded through hole 17.

[0062] The sensor mounting mechanism includes a threaded mounting cylinder 20 threadedly connected to the threaded through hole 17, and a filtering metal membrane 21 arranged on the threaded mounting cylinder 20 and located outside the threaded through hole 17; the threaded mounting cylinder 20 is provided with a metal grid 22 for supporting the filtering metal membrane 21, and the gas sensor 19 is arranged in the threaded mounting cylinder 20.

[0063] In this embodiment 6, under the action of the fan 15, the gas flows through the inner cavity 44 of the threaded mounting tube, the air cavity 16, the through hole 18 and the second mounting cavity 14 in sequence, and is finally discharged to the outside through the fan 15. In this process, the filter metal membrane 21 is used to filter foreign matter carried in the gas, and the metal mesh frame 22 is used to support the filter metal membrane 21 to keep the filter metal membrane 21 in shape and avoid deformation of the filter metal membrane 21 and affect the gas flow rate.

[0064] In the sixth embodiment, a support plate 41 is disposed inside the threaded installation tube 20, and the gas sensor 19 is disposed on the support plate 41. The inner cavity 44 of the threaded installation tube is in communication with the outside and the gas cavity 16.

[0065] Example 7

[0066] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0067] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0068] The mounting seat 3 includes a base 11 and a top seat 12 . The gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat 12 , a gas sensor 19 mounted on the sensor mounting mechanisms, and a pumping mechanism disposed on the top seat 12 .

[0069] The pumping mechanism includes a second mounting cavity 14 opened on the base 11, a fan 15 arranged in the second mounting cavity 14 and connected to the outside, an air cavity 16 opened on the top seat 12 and connected to the second mounting cavity 14, threaded through holes 17 circumferentially opened on the top seat 12 and corresponding to the sensor mounting mechanisms one by one and connected to the air cavity 16 respectively, and a through hole 18 opened on the top seat 12 and connected between the air cavity 16 and the second mounting cavity 14; the sensor mounting mechanism is threadedly connected to the threaded through hole 17.

[0070] A third installation cavity 23 is provided on the top seat 12, a fixing plate 24 is provided at the bottom of the third installation cavity 23, the first satellite signal receiver 4 is arranged on the fixing plate 24 and is located in the third installation cavity 23, and a first clearance hole 25 connected to the third installation cavity 23 is provided at the top of the top seat 12, and the antenna of the first satellite signal receiver 4 extends out of the top seat 12 through the first clearance hole 25.

[0071] In this embodiment 7, the first satellite signal receiver 4 receives the satellite group signal and calculates the current position of the first satellite signal receiver 4 based on the received signal. This position can be used to indicate the current position of the advance detector 2. When the advance detector 2 detects that the type of gas is harmful to the human body or the leaked gas is flammable and explosive, and the concentration is high, and it is prone to combustion and explosion, the advance detector 2 will send the current position to the position sharer 1 through the second wireless transceiver 33, and the area corresponding to this position is the dangerous area.

[0072] Example 8

[0073] like Figure 1-11 As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0074] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0075] The mounting seat 3 includes a base 11 and a top seat 12 . The gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat 12 , a gas sensor 19 mounted on the sensor mounting mechanisms, and a pumping mechanism disposed on the top seat 12 .

[0076] The pumping mechanism includes a second mounting cavity 14 opened on the base 11, a fan 15 arranged in the second mounting cavity 14 and connected to the outside, an air cavity 16 opened on the top seat 12 and connected to the second mounting cavity 14, threaded through holes 17 circumferentially opened on the top seat 12 and corresponding to the sensor mounting mechanisms one by one and connected to the air cavity 16 respectively, and a through hole 18 opened on the top seat 12 and connected between the air cavity 16 and the second mounting cavity 14; the sensor mounting mechanism is threadedly connected to the threaded through hole 17.

[0077] A fourth installation cavity 26 is provided on the base 11 , and the protective mechanism includes a linear motor 29 arranged in the fourth installation cavity 26 , and a protective cover 30 arranged outside the top seat 12 and connected to the driving shaft of the linear motor 29 ; an embedding groove 32 adapted to the protective cover 30 is provided on the top seat 12 .

[0078] In this embodiment 8, when combustion and explosion occur in the outside world, the linear motor 29 is started, and the driving shaft of the linear motor 29 drives the protective cover 30 to move downward until the bottom of the protective cover 30 is embedded in the embedding groove 32. The protective cover protects the gas sensor 19 to prevent the gas sensor 19 from being affected by high temperature, flying objects or flames. The outer walls of the base 11, the top seat 12 and the protective cover 30 of the present invention are coated with explosion-proof paint. A third clearance through hole 37 is provided on the top seat 12, and the driving shaft of the linear motor 29 passes through the third clearance through hole 37 and is connected to the protective cover 30. When performing gas detection, the linear motor 29 is started, and the driving shaft of the linear motor 29 drives the protective cover 30 to move upward until the bottom of the protective cover 30 withdraws from the embedding groove 32 and moves away.

[0079] Example 9

[0080] like Figure 1-11As shown, the present invention provides a GNSS-based gas detection system for path planning, including a position sharer 1 worn on a person's hand, and a plurality of advance detectors 2 distributed in a gas leakage site and respectively connected to the position sharer 1; the advance detector 2 includes a mounting seat 3, a data transmission mechanism disposed on the mounting seat 3 and connected to the position sharer 1, and a gas detection mechanism, a protection mechanism and a first satellite signal receiver 4 disposed on the mounting seat 3 and respectively connected to the data transmission mechanism.

[0081] The location sharer 1 includes an installation box 5, a first single chip microcomputer 6 arranged on the installation box 5, and a second satellite signal receiver 38, a first wireless transceiver 31, a first rechargeable battery 10 and a liquid crystal touch screen 7 arranged on the installation box 5 and connected to the first single chip microcomputer 6 respectively.

[0082] The mounting seat 3 includes a base 11 and a top seat 12 . The gas detection mechanism includes a plurality of sensor mounting mechanisms circumferentially distributed on the top seat 12 , a gas sensor 19 mounted on the sensor mounting mechanisms, and a pumping mechanism disposed on the top seat 12 .

[0083] The pumping mechanism includes a second mounting cavity 14 opened on the base 11, a fan 15 arranged in the second mounting cavity 14 and connected to the outside, an air cavity 16 opened on the top seat 12 and connected to the second mounting cavity 14, threaded through holes 17 circumferentially opened on the top seat 12 and corresponding to the sensor mounting mechanisms one by one and connected to the air cavity 16 respectively, and a through hole 18 opened on the top seat 12 and connected between the air cavity 16 and the second mounting cavity 14; the sensor mounting mechanism is threadedly connected to the threaded through hole 17.

[0084] A fourth installation cavity 26 is provided on the base 11 , and the protective mechanism includes a linear motor 29 arranged in the fourth installation cavity 26 , and a protective cover 30 arranged outside the top seat 12 and connected to the driving shaft of the linear motor 29 ; an embedding groove 32 adapted to the protective cover 30 is provided on the top seat 12 .

[0085] The data transmission mechanism includes a second single-chip computer 27 disposed in the fourth installation cavity 26 and connected to the first single-chip computer 6, and a second rechargeable battery 28 and a second wireless transceiver 33 disposed in the fourth installation cavity 26 and respectively connected to the second single-chip computer 27. The first satellite signal receiver 4, the gas sensor 19, the fan 15 and the linear motor 29 are respectively connected to the second single-chip computer 27.

[0086] In this embodiment 9, the second single-chip microcomputer 27 and the first single-chip microcomputer 6 are wirelessly connected through the second wireless transceiver 33 and the first wireless transceiver 31. The second rechargeable battery 28 is used to supply power to the second single-chip microcomputer 27, the second wireless transceiver 33, the first satellite signal receiver 4, the gas sensor 19, the fan 15 and the linear motor 29. The first satellite signal receiver 4 receives the satellite group signal, and calculates the current position of the first satellite signal receiver 4 according to the received signal, and transmits the position information to the second single-chip microcomputer 27, and the position can be used to indicate the current position of the advance detector 2. The gas sensor 19 detects the type and concentration of the gas, and transmits the detected information to the second single-chip microcomputer 27. When the gas sensor 19 detects that the gas type is harmful to the human body or the leaked gas is flammable and explosive gas, and the concentration is high, and it is easy to burn and explode, the second single-chip microcomputer 27 sends the position information transmitted by the first satellite signal receiver 4 at this time to the position sharer 1, and the area corresponding to the position is the dangerous area. When the first satellite signal receiver 4 transmits the location information to the second single-chip microcomputer 27 in real time, the second single-chip microcomputer 27 distinguishes the location information corresponding to the ordinary area from the location information corresponding to the dangerous area, and only transmits the location information corresponding to the dangerous area to the location sharer 1. In this way, it is convenient for personnel to identify the position corresponding to the dangerous area displayed on the location sharer 1.

[0087] The model of the first single-chip microcomputer 6 of the present invention is a STM32F103xC single-chip microcomputer. The model of the second single-chip microcomputer 27 is a STM32F103xC single-chip microcomputer.

[0088] The first satellite signal receiver 4, the second satellite signal receiver 38, the first single chip microcomputer 6, the liquid crystal touch screen 7, the first rechargeable battery 10, the fan 15, the gas sensor 19, the second single chip microcomputer 27, the second rechargeable battery 28, the linear motor 29, the first wireless transceiver 31 and the second wireless transceiver 33 used in the present invention are all existing known electrical equipment and can be directly purchased and used on the market. The structures, circuits, and control principles of the first satellite signal receiver 4, the second satellite signal receiver, the first single-chip microcomputer 6, the LCD touch screen 7, the first rechargeable battery 10, the fan 15, the gas sensor 19, the second single-chip microcomputer 27, the second rechargeable battery 28, the linear motor 29, the first wireless transceiver 31 and the second wireless transceiver 33 are all existing known technologies. Therefore, the structures, circuits, and control principles of the first satellite signal receiver 4, the second satellite signal receiver, the first single-chip microcomputer 6, the LCD touch screen 7, the first rechargeable battery 10, the fan 15, the gas sensor 19, the second single-chip microcomputer 27, the second rechargeable battery 28, the linear motor 29, the first wireless transceiver 31 and the second wireless transceiver 33 are not described in detail here.

[0089] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or modifications made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A gas detection system for path planning based on GNSS, characterized in that: The invention comprises a position sharing device (1) worn on a person's hand, and a plurality of advance detectors (2) distributed in a gas leakage site and respectively connected to the position sharing device (1); the advance detector (2) comprises a mounting seat (3), a data transmission mechanism arranged on the mounting seat (3) and connected to the position sharing device (1), and a gas detection mechanism, a protection mechanism and a first satellite signal receiver (4) arranged on the mounting seat (3) and respectively connected to the data transmission mechanism.

2. A gas detection system for path planning based on GNSS according to claim 1, characterized in that: The location sharer (1) comprises an installation box (5), a first single-chip microcomputer (6) arranged on the installation box (5), and a second satellite signal receiver (38), a first wireless transceiver (31), a first rechargeable battery (10) and a liquid crystal touch screen (7) arranged on the installation box (5) and respectively connected to the first single-chip microcomputer (6).

3. A gas detection system for path planning based on GNSS according to claim 2, characterized in that: A first installation cavity (8) is provided on the installation box (5), a step (9) is provided on the top of the first installation cavity (8), a first single-chip computer (6), a first wireless transceiver (31), a first rechargeable battery (10) and a second satellite signal receiver (38) are respectively arranged in the first installation cavity (8), and a liquid crystal touch screen (7) is arranged on the step (9).

4. A gas detection system for path planning based on GNSS according to claim 2, characterized in that: The mounting seat (3) comprises a base (11) and a top seat (12); the gas detection mechanism comprises a plurality of sensor mounting mechanisms circumferentially distributed on the top seat (12), a gas sensor (19) mounted on the sensor mounting mechanisms, and a pumping mechanism arranged on the base (11) and the top seat (12).

5. A GNSS-based path planning gas detection system according to claim 4, characterized in that: The pumping mechanism comprises a second mounting cavity (14) provided on the base (11), a fan (15) provided in the second mounting cavity (14) and connected to the outside, an air cavity (16) provided on the top seat (12) and connected to the second mounting cavity (14), threaded through holes (17) provided circumferentially on the top seat (12) and corresponding to the sensor mounting mechanisms one by one and connected to the air cavity (16), and a through hole (18) provided on the top seat (12) and connected between the air cavity (16) and the second mounting cavity (14); the sensor mounting mechanism is threadedly connected to the threaded through hole (17).

6. A GNSS-based path planning gas detection system according to claim 5, characterized in that: The sensor installation mechanism comprises a threaded installation cylinder (20) threadedly connected to a threaded through hole (17), and a filtering metal membrane (21) arranged on the threaded installation cylinder (20) and located outside the threaded through hole (17); a metal grid frame (22) for supporting the filtering metal membrane (21) is arranged on the threaded installation cylinder (20), and a gas sensor (19) is arranged in the threaded installation cylinder (20).

7. A gas detection system for path planning based on GNSS according to claim 5, characterized in that: A third installation cavity (23) is provided on the top seat (12), a fixing plate (24) is provided at the bottom of the third installation cavity (23), a first satellite signal receiver (4) is arranged on the fixing plate (24) and is located in the third installation cavity (23), a first clearance through hole (25) connected to the third installation cavity (23) is provided at the top of the top seat (12), and an antenna of the first satellite signal receiver (4) extends out of the top seat (12) through the first clearance through hole (25).

8. The gas detection system for path planning based on GNSS according to claim 5, characterized in that: A fourth installation cavity (26) is provided on the base (11); the protection mechanism comprises a linear motor (29) disposed in the fourth installation cavity (26), and a protection cover (30) disposed outside the top base (12) and connected to a driving shaft of the linear motor (29); and an embedding groove (32) adapted to the protection cover (30) is provided on the top base (12).

9. A GNSS-based path planning gas detection system according to claim 8, characterized in that: The data transmission mechanism comprises a second single-chip computer (27) disposed in a fourth installation cavity (26) and connected to the first single-chip computer (6), and a second rechargeable battery (28) and a second wireless transceiver (33) disposed in the fourth installation cavity (26) and respectively connected to the second single-chip computer (27); the first satellite signal receiver (4), the gas sensor (19), the fan (15) and the linear motor (29) are respectively connected to the second single-chip computer (27).

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