Wireless combustible gas alarm system and method

Abstract

The invention discloses a wireless combustible gas alarm system and method. The system comprises a main control module, a man-machine interaction module, a feedback execution module, a gas collection module, a multi-dimensional alarm module, a self-protection module and a power supply module. The man-machine interaction module comprises an instruction input unit, a wireless remote control unit and a communication display unit, the instruction input unit receives a control instruction to generate a corresponding instruction code, the wireless remote control unit generates instruction modulation infrared light waves through the instruction code and a remote control frequency, and the communication display unit sends the instruction modulation infrared light waves to the main control module; the main control module is in communication connection with a remote upper computer based on the wireless signal transmission module. According to the wireless combustible gas alarm system provided by the invention, an infrared light wave transmission working instruction is modulated by generating an instruction, and wireless communication connection with a remote upper computer is realized based on the wireless signal transmission module, so that remote control is realized, the cost is relatively low, the flexibility is relatively good, and the detection efficiency of combustible gas is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and in particular to a wireless flammable gas alarm system and method. Background Art

[0002] With the acceleration of industrialization and urbanization, flammable gases (such as natural gas, liquefied petroleum gas, hydrogen, etc.) are widely used in many industrial fields such as energy, chemical industry, metallurgy, petroleum, etc. However, due to the flammable nature of flammable gases and the diffusivity of the gas itself, once a leak occurs, it may cause serious safety accidents such as fire and explosion, posing a huge threat to the safety of people's lives and property. Therefore, the research and development and application of flammable gas alarm systems for flammable gas safety applications have received increasing attention.

[0003] The traditional flammable gas alarm system adopts a single-board design. Each system is an independent unit with no data communication between each other, so it is impossible to achieve remote data monitoring and data transmission sharing. Therefore, when the system is unattended, once a gas leak occurs, it may not be possible to take timely remedial measures. In order to solve the problem of being unable to achieve remote control, the current solution is to introduce wired communication technology, but these technologies are all subject to wired communication methods, requiring the layout of wired communication lines, with limited control distance, high cost, and poor flexibility, and cannot achieve efficient detection and alarm functions for flammable gases. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art. The present invention provides a wireless flammable gas alarm system and method, which transmits work instructions by generating instructions to modulate infrared light waves, and realizes wireless communication connection with a remote host computer based on a wireless signal transmission module, thereby realizing long-distance control, having low cost and good flexibility, and effectively improving the detection efficiency of flammable gas.

[0005] The present invention provides a wireless combustible gas alarm system, the system comprising a main control module, a human-computer interaction module, a feedback execution module, a gas acquisition module, a multi-dimensional alarm module, a self-protection module and a power module, the main control module is respectively connected with the human-computer interaction module, the feedback execution module, the gas acquisition module, the multi-dimensional alarm module, the self-protection module and the power module;

[0006] The human-computer interaction module includes a command input unit, a wireless remote control unit and a communication display unit, wherein the command input unit is connected to the wireless remote control unit, the wireless remote control unit is connected to the communication display unit, the communication display unit is connected to the main control module, the command input unit receives a control command and generates a corresponding command code, the wireless remote control unit generates a command modulated infrared light wave according to the command code and a preset remote control frequency, and the communication display unit sends the command modulated infrared light wave to the main control module;

[0007] The system also includes a wireless signal transmission module, and the main control module is connected to a remote host computer through communication based on the wireless signal transmission module.

[0008] Furthermore, the main control module includes a microprocessor, a gas signal transceiver module, a host computer communication module, a power control module, and an auxiliary circuit module. The microprocessor is respectively connected to the gas signal transceiver module, the host computer communication module, the power control module, and the auxiliary circuit module. The gas signal transceiver module is connected to the gas acquisition module, the host computer communication module is connected to the wireless signal transmission module, the power control module is connected to the power module, and the auxiliary circuit module is used to assist the microprocessor in working.

[0009] Furthermore, the gas collection module includes a gas collection device, a gas sensor device, and an induction signal filter. The gas collection device is connected to the gas sensor device, the gas sensor device is connected to the induction signal filter, and the induction signal filter is connected to the main control module. The gas collection device collects gas, and the gas sensor device has a built-in gas sensing circuit. The gas sensing circuit detects the composition of the collected gas and determines whether it is a combustible gas. After the detection is completed, a detection sensing signal is generated, and the induction signal filter filters the detection sensing signal and transmits it to the main control module.

[0010] Furthermore, the multi-dimensional alarm module includes an audible and visual alarm module, a voice alarm module, a text message alarm module and a telephone alarm module, and the audible and visual alarm module, the voice alarm module, the text message alarm module and the telephone alarm module are arranged in a distributed parallel manner.

[0011] Furthermore, the feedback execution module includes a fresh air module, an access control module, and a solenoid valve module.

[0012] Furthermore, the self-protection module includes a fault detection module, a calibration module, an anti-reverse connection module, and a lightning protection module. The fault detection module is used to perform a fault self-check operation on the system, and the calibration module is used to perform a zeroing operation on the system.

[0013] Furthermore, the power module includes a primary power module, a secondary power module and a battery, the primary power module is connected to the secondary power module, the battery and the mains interface, the battery is connected to the secondary power module, and the secondary power module is connected to the main control module.

[0014] Furthermore, the communication display unit includes a digital display unit and a signal light display unit.

[0015] Furthermore, the communication display unit also includes a communication antenna, and the communication antenna is a monopole antenna.

[0016] The present invention also provides a wireless flammable gas alarm method, which is used to control the above-mentioned wireless flammable gas alarm system to work, and the method comprises:

[0017] The main control module generates a system initialization instruction and controls the self-protection module to perform a fault self-check operation and a zero adjustment operation;

[0018] The human-computer interaction module generates an instruction to modulate an infrared light wave, and sends the instruction to modulate the infrared light wave to the main control module, and the main control module generates a detection instruction based on the instruction to modulate the infrared light wave;

[0019] The gas collection module collects gas based on the detection instruction, detects the components of the collected gas, and generates a detection sensing signal;

[0020] The main control module generates a detection processing instruction based on the detection sensing signal, and the multi-dimensional alarm module and the feedback execution module perform an alarm and subsequent processing operations based on the detection processing instruction, and generate a detection processing report;

[0021] The main control module sends the detection processing report to a remote host computer based on the wireless signal transmission module.

[0022] The present invention provides a wireless flammable gas alarm system and method. By setting a command input unit, a wireless remote control unit and a communication display unit in a human-computer interaction module, as well as a communication antenna, a command modulated infrared light wave is generated to transmit a work command. At the same time, a wireless connection between a main control module and a remote host computer is realized based on a wireless signal transmission module. The disadvantage that a traditional flammable gas alarm system cannot realize remote data monitoring and data transmission sharing is overcome, the realization form and way of modern multifunctional flammable gas alarm is optimized and enriched, the on-site and remote centralized real-time monitoring is realized, and the requirements of fire safety for system fire and explosion prevention are easily met. The system has the characteristics of networking, intelligence and high efficiency, and realizes a more intelligent and efficient gas monitoring and early warning function. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is an architecture diagram of a wireless flammable gas alarm system in Embodiment 1 of the present invention;

[0025] Figure 2 Schematic diagram of signal transmission of a wireless flammable gas alarm system in Embodiment 1 of the present invention;

[0026] Figure 3 is a schematic diagram of the communication antenna structure in Embodiment 1 of the present invention;

[0027] Figure 4 is a schematic diagram of the top-level structure of the communication antenna in the first embodiment of the present invention;

[0028] Figure 5 is a first frequency band adjustment change diagram in Embodiment 1 of the present invention;

[0029] Figure 6 is a second frequency band adjustment change diagram in Embodiment 1 of the present invention;

[0030] Figure 7 is a schematic diagram of the underlying structure of the communication antenna in the first embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of adjusting the frequency band of the communication antenna in the first embodiment of the present invention;

[0032] Fig. 9 is a schematic diagram of the main control module architecture in the first embodiment of the present invention;

[0033] Fig.10 Schematic diagram of the gas collection module architecture in the first embodiment of the present invention;

[0034] Fig.11 is a schematic diagram of a gas sensing circuit in Embodiment 1 of the present invention;

[0035] Fig.12 is a schematic diagram of the power module architecture in the first embodiment of the present invention;

[0036] Fig.13 This is a flow chart of the wireless flammable gas alarm method in the second embodiment of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the present invention, it should be understood that terms such as "include" or "have" are intended to indicate the existence of features, numbers, steps, behaviors, components, parts or a combination thereof disclosed in the specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, behaviors, components, parts or a combination thereof exist or are added.

[0039] It should also be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] Embodiment 1

[0041] Embodiment 1 of the present invention provides a wireless flammable gas alarm system, which includes a main control module, a human-computer interaction module, a feedback execution module, a gas acquisition module, a multi-dimensional alarm module, a self-protection module and a power supply module, and the main control module is respectively connected to the human-computer interaction module, the feedback execution module, the gas acquisition module, the multi-dimensional alarm module, the self-protection module and the power supply module.

[0042] In an optional implementation of this embodiment, Figure 1 As shown, Figure 1 The wireless flammable gas alarm system architecture diagram in the first embodiment of the present invention is shown. The system includes a main control module, a human-computer interaction module, a feedback execution module, a gas acquisition module, a multi-dimensional alarm module, a self-protection module and a power supply module. The main control module is respectively connected to the human-computer interaction module, the feedback execution module, the gas acquisition module, the multi-dimensional alarm module, the self-protection module and the power supply module.

[0043] In an optional implementation of this embodiment, the system further includes a wireless signal transmission module, and the main control module is communicatively connected with a remote host computer based on the wireless signal transmission module.

[0044] In an optional implementation of this embodiment, Figure 2 As shown, Figure 2A schematic diagram of signal transmission of a wireless flammable gas alarm system in Embodiment 1 of the present invention is shown, wherein a bidirectional data flow signal exists between the main control module and the wireless signal transmission module, the human-computer interaction module, the feedback execution module, the multidimensional alarm module, the self-protection module and the power supply module, a unidirectional data flow input signal exists between the main control module and the gas acquisition module, and a bidirectional data flow signal exists between the wireless signal transmission module and a remote host computer.

[0045] In an optional implementation of this embodiment, the human-computer interaction module includes a command input unit, a wireless remote control unit and a communication display unit, the command input unit is connected to the wireless remote control unit, the wireless remote control unit is connected to the communication display unit, and the communication display unit is connected to the main control module.

[0046] Specifically, the instruction input unit receives the control instruction and generates a corresponding instruction code, the wireless remote control unit generates an instruction modulated infrared light wave through the instruction code and a preset remote control frequency, and the communication display unit sends the instruction modulated infrared light wave to the main control module.

[0047] In an optional implementation of this embodiment, the command input unit has a built-in keyboard unit and a command conversion unit, the keyboard unit includes a plurality of control keys, and the input of different control commands is realized through a specific control key sequence combination. The command conversion unit translates the input control command into a corresponding command code and transmits it to the wireless remote control unit.

[0048] Specifically, the instruction conversion unit searches for the input control instruction through a built-in instruction code library, matches the corresponding translation code, and translates the code into the corresponding instruction code.

[0049] In an optional implementation of this embodiment, the wireless remote control unit includes a transceiver functional unit and an external wireless remote control. The transceiver functional unit generates command-modulated infrared light waves through the command code and a preset remote control frequency, and forwards them to the communication display unit.

[0050] Specifically, the transceiver functional unit fuses the instruction code with a carrier frequency of 38kHz and a duty cycle of 1 / 3 to generate an instruction modulated infrared light wave, and forwards it to the communication display unit.

[0051] In an optional implementation of this embodiment, the communication display unit sends the command modulated infrared light wave to the main control module.

[0052] Specifically, the main control module modulates the command infrared light wave into the comparator through a demodulation circuit and an integration circuit, and restores the control command signal by comparing the high and low levels of the output.

[0053] In an optional implementation of this embodiment, the communication display unit includes a digital display unit and a signal light display unit, and the digital display unit and the signal light display unit are used to display the working status of the communication display unit.

[0054] Specifically, the digital display unit is composed of a plurality of hollow PCB boards, the front side of the PCB board is covered with a PET polyethylene terephthalate film, and the back side is etched with a display circuit structure.

[0055] It should be noted that the problem of uneven display of the traditional hollow PCB board can be solved by using two reverse mounted LED lights for reverse welding on each stroke segment of the characters displayed on the hollow PCB board.

[0056] Furthermore, the signal light display unit adopts a three-LED light array structure, which can be used to reflect the working status signal of the system.

[0057] It should be noted that the signal light display unit in this embodiment meets the national standard GB15322.1-2019 for combustible gas detectors for industrial and commercial use.

[0058] In an optional implementation of this embodiment, the communication display unit further includes a communication antenna, and the communication antenna is a dual-band monopole antenna.

[0059] Specifically, Figure 3 As shown, Figure 3 A schematic diagram of the structure of a communication antenna in Embodiment 1 of the present invention is shown, wherein the communication antenna comprises a top layer 1, a dielectric board layer 2, and a bottom layer 3, wherein the top layer 1, the dielectric board layer 2, and the bottom layer 3 are arranged from top to bottom.

[0060] In an optional implementation of this embodiment, Figure 4 As shown, Figure 4 A schematic diagram of the top-layer structure of a communication antenna in Embodiment 1 of the present invention is shown, wherein an antenna head 11, a first antenna body 12, a first antenna loading section 13, a second antenna loading section 14 and a second antenna body 15 are arranged on the top layer 1, the antenna head 11 is connected to the first antenna body 12, the first antenna body 12 is connected to the second antenna body 15, the first antenna loading section 13 and the second antenna loading section 14 are connected at the connection between the first antenna body 12 and the second antenna body 15, wherein the first antenna loading section 13 is located on the left, and the second antenna loading section 14 is located on the right.

[0061] Specifically, the antenna head 11, the first antenna body 12 and the second antenna body 15 constitute an intrinsic monopole antenna structure, the first antenna loading segment 13, the second antenna loading segment 14 and the second antenna body 15 constitute a loaded monopole antenna structure, and the intrinsic monopole antenna structure and the loaded monopole antenna structure respectively operate in different frequency bands to achieve dual-band characteristics.

[0062] Furthermore, the antenna head 11 adopts a regular hexagonal structure, which can increase the radiation area while reducing the required physical length, thereby achieving the purpose of miniaturization.

[0063] In an optional implementation of the present embodiment, the frequency control method of the communication antenna is: the intrinsic monopole antenna structure composed of the antenna head 11, the first antenna body 12 and the second antenna body 15 determines the position of the first frequency band, and the loaded monopole antenna structure composed of the first antenna loading segment 13, the second antenna loading segment 14 and the second antenna body 15 determines the position of the second frequency band.

[0064] Specifically, assuming that the distance from the center to the vertex of the antenna head 11 is R1, the length of the first antenna body 12 is L2, the length of the second antenna body 15 is L1, and the width of the second antenna body 15 is w1, the first frequency band is adjusted by adjusting the length of R1+L2+L1, specifically, the first frequency band is adjusted by adjusting the length of R1, such as Figure 5 As shown, Figure 5 The first frequency band adjustment change diagram in the first embodiment of the present invention is shown. When R1 changes from 5 mm to 6 mm, S in the first frequency band between 2 GHz and 3 GHz 11 The parameter changes are quite obvious.

[0065] Furthermore, assuming that the lengths of the two sections of the first antenna loading section 13 are L3 and L4 respectively, the second frequency band is adjusted by adjusting the length of L3+L4, specifically, the second frequency band is adjusted by adjusting the length of L4, such as Figure 6 As shown, Figure 6 The second frequency band adjustment change diagram in the first embodiment of the present invention is shown. When L4 changes from 3.1 mm to 6.1 mm, S in the second frequency band between 5 GHz and 6 GHz 11 The parameter changes are quite obvious.

[0066] It should be noted that the first antenna loading section 13 and the second antenna loading section 14 are arranged in a mirror image.

[0067] In an optional implementation of the present embodiment, the connection point between the first antenna loading section 13 and the second antenna loading section 14 at the first antenna body 11 and the second antenna body 15 is the center position of the antenna head 11, the first antenna body 11 and the second antenna body 15, that is, L1=L2+2R1. This design can reduce the impact on the first frequency band when adjusting the length of L4.

[0068] In an optional implementation of this embodiment, Figure 7 As shown, Figure 7 The schematic diagram of the bottom layer structure of the communication antenna in the first embodiment of the present invention is shown. The bottom layer 3 adopts a semi-open structure and a V-shaped structure, which effectively optimizes the performance of the communication antenna and improves the degree of freedom of design.

[0069] In an optional implementation of this embodiment, Figure 8 As shown, Figure 8 The schematic diagram of adjusting the frequency band of the communication antenna in the first embodiment of the present invention is shown. When L1=13.87mm, L2=5.2mm, L3=5.3mm, L4=6.1mm, R1=6.5mm, L5=3.7mm, L6=2mm and w1=3mm are set, the Figure 8 S 11 The parameter changes are known, and it has dual-band characteristics, the first frequency band is 2.27GHz-2.91GHz, and the second frequency band is 3.6GHz-7.61GHz.

[0070] A dual-band communication antenna is set here to transmit the command information input by the human-computer interaction module to the main control module by wireless means, thereby improving the working efficiency of the system.

[0071] In an optional implementation of this embodiment, Fig. 9 As shown, Fig. 9 A schematic diagram of the main control module architecture in Embodiment 1 of the present invention is shown, wherein the main control module includes a microprocessor, a gas signal transceiver module, a host computer communication module, a power control module, and an auxiliary circuit module. The microprocessor is respectively connected to the gas signal transceiver module, the host computer communication module, the power control module, and the auxiliary circuit module. The gas signal transceiver module is connected to the gas acquisition module, the host computer communication module is connected to the wireless signal transmission module, the power control module is connected to the power module, and the auxiliary circuit module is used to assist the microprocessor in working.

[0072] Specifically, there is a bidirectional data flow signal between the microprocessor and the host computer communication module, there is a unidirectional data flow output signal between the microprocessor and the power control module and the auxiliary circuit module, and there is a unidirectional data flow input signal between the microprocessor and the gas signal transceiver module.

[0073] In an optional implementation of this embodiment, Fig.10 As shown, Fig.10 A schematic diagram of the gas collection module architecture in Embodiment 1 of the present invention is shown, wherein the gas collection module includes a gas collection device, a gas sensor device, and an induction signal filter. The gas collection device is connected to the gas sensor device, which is connected to the induction signal filter, which is connected to the main control module. The gas collection device collects gas, and the gas sensor device has a built-in gas sensing circuit. The gas sensing circuit detects the composition of the collected gas and determines whether it is a combustible gas. After the detection is completed, a detection sensing signal is generated, and the sensing signal filter filters the detection sensing signal and transmits it to the main control module.

[0074] Specifically, Fig.11 As shown, Fig.11 The schematic diagram of the gas sensing circuit in the first embodiment of the present invention is shown, including a resistor R1, a resistor R2, a sliding rheostat R3, and a sensor. After the working voltage is applied, a balanced bridge with a zero voltage at the signal output end is formed. When gas is input, the sensor impedance changes, the bridge becomes unbalanced, and the sensor detects the composition of the collected gas and generates a detection sensing signal.

[0075] In an optional implementation of this embodiment, the multi-dimensional alarm module includes an audible and visual alarm module, a voice alarm module, a text message alarm module and a telephone alarm module, and the audible and visual alarm module, the voice alarm module, the text message alarm module and the telephone alarm module are arranged in a distributed parallel manner.

[0076] Specifically, the sound and light alarm module is used for sound and light alarm, the voice alarm module is used for voice alarm, the SMS alarm module is used for SMS alarm, and the telephone alarm module is used for telephone alarm.

[0077] In an optional implementation of this embodiment, the feedback execution module includes a fresh air module, a door access control module, and a solenoid valve module.

[0078] In an optional implementation of this embodiment, the self-protection module includes a fault detection module, a calibration module, an anti-reverse connection module, and a lightning protection module. The fault detection module is used to perform fault self-check operations on the system, and the calibration module is used to perform zeroing operations on the system.

[0079] Specifically, the fault self-check operation of the fault detection module includes: detecting whether there is a communication fault between the main control module and the remote host computer by performing a sending and receiving command test between the main control module and the remote host computer, and detecting the corresponding communication fault by detecting the voltage signal of the wired physical interface on the main control module.

[0080] Furthermore, the zeroing operation process of the calibration module is as follows: after detecting the signal voltage output by the gas acquisition module 10 times, an average value is taken, and the signal function is zeroed using the average value as a basic value; in addition, the calibration operation is realized by inputting standard gas into the gas acquisition module.

[0081] It should be noted that, in addition to the automatic zeroing and calibration operations when the system is started, zeroing and calibration operations can also be performed by inputting commands through the human-computer interaction module.

[0082] Furthermore, the anti-reverse connection module connects the power cord, the gas acquisition module signal wiring group and the host computer wiring group through a snap-on connector, and sets a bridge rectifier, a self-recovery fuse and several diodes, and utilizes the unidirectional conduction characteristics of the diode to achieve the anti-reverse connection function.

[0083] Furthermore, in this embodiment, the lightning protection module is implemented in the following forms: 1. All circuits are connected to the metal casing, and the metal casing is connected to the ground through a wire; 2. The physical circuit connection points between the power module and the main control module, as well as the physical circuit connection points between the gas collection module and the main control module are bridged by self-resetting fuses; 3. The physical circuit connection points between each module are bridged by a zero-ohm resistor.

[0084] In an optional implementation of this embodiment, Fig.12 As shown, Fig.12 A schematic diagram of the power module architecture in Embodiment 1 of the present invention is shown, wherein the power module includes a primary power module, a secondary power module and a battery, wherein the primary power module is connected to the secondary power module, the battery and the AC power interface, the battery is connected to the secondary power module, and the secondary power module is connected to the main control module.

[0085] Specifically, one port of the primary power module is connected to 220V AC power, and the other two interfaces are respectively connected to the secondary power module and the battery. The primary power module is used to collect electrical energy on the AC power interface and transmit it to the secondary power module for use, or to charge the battery. The secondary power module converts the electrical energy provided by the primary power module or the battery into a 5V voltage for use by the system.

[0086] In summary, embodiment 1 of the present invention provides a wireless flammable gas alarm system, which generates command-modulated infrared light waves to transmit work instructions by setting a command input unit, a wireless remote control unit and a communication display unit in a human-computer interaction module, and a communication antenna. At the same time, based on the wireless signal transmission module, the wireless connection between the main control module and the remote host computer is realized, which overcomes the disadvantages of traditional flammable gas alarm systems that cannot realize remote data monitoring and data transmission sharing, optimizes and enriches the implementation forms and methods of modern multifunctional flammable gas alarms, realizes on-site and remote centralized real-time monitoring, is easy to meet the fire safety requirements for system fire and explosion protection, has the characteristics of networking, intelligence and high efficiency, and realizes more intelligent and efficient gas monitoring and early warning functions.

[0087] Embodiment 2

[0088] Embodiment 2 of the present invention provides a wireless flammable gas alarm method, which is used to control the wireless flammable gas alarm system described in Embodiment 1 to work, and the method includes: the main control module generates a system initialization instruction, and controls the self-protection module to perform fault self-detection operation and zeroing operation; the human-computer interaction module generates an instruction to modulate an infrared light wave, and sends the instruction to modulate the infrared light wave to the main control module, and the main control module generates a detection instruction based on the instruction to modulate the infrared light wave; the gas collection module collects gas based on the detection instruction, and detects the components of the collected gas to generate a detection sensing signal; the main control module generates a detection processing instruction based on the detection sensing signal, and the multi-dimensional alarm module and the feedback execution module perform an alarm and subsequent processing operations based on the detection processing instruction, and generate a detection processing report; the main control module sends the detection processing report to a remote host computer based on the wireless signal transmission module.

[0089] In an optional implementation of this embodiment, Fig.13 As shown, Fig.13 The flowchart of the wireless combustible gas alarm method in the second embodiment of the present invention is shown, which includes the following steps:

[0090] S101, the main control module generates a system initialization instruction, and controls the self-protection module to perform a fault self-check operation and a zeroing operation;

[0091] In an optional implementation of this embodiment, when the system starts, the main control module generates a system initialization instruction to control the self-protection module to perform a fault self-check operation and a zeroing operation, wherein the fault detection module performs a fault self-check operation, and the calibration module performs a zeroing operation.

[0092] Specifically, the fault detection module detects whether there is a communication fault between the main control module and the remote host computer by performing a sending and receiving command test between the main control module and the remote host computer, and detects the corresponding communication fault by detecting the voltage signal of the wired physical interface on the main control module.

[0093] In an optional implementation of this embodiment, when it is determined that a fault exists, it is further determined whether a gas sensor in the gas collection module is faulty. At the same time, the multi-dimensional alarm module sounds an alarm, the communication display unit displays the fault type, and reports the alarm information to the remote host computer.

[0094] S102, the human-computer interaction module generates an instruction to modulate an infrared light wave, and sends the instruction to modulate the infrared light wave to the main control module, and the main control module generates a detection instruction based on the instruction to modulate the infrared light wave;

[0095] In an optional implementation of this embodiment, the human-computer interaction module receives input control instructions, generates corresponding instruction codes, and generates instruction modulated infrared light waves through the instruction codes and a preset remote control frequency, and sends the instruction modulated infrared light waves to the main control module. The main control module generates detection instructions based on the instruction modulated infrared light waves.

[0096] Furthermore, the main control module determines whether the wireless signal transmission module receives a control instruction from a remote host computer.

[0097] S103, the gas collection module collects gas based on the detection instruction, detects the components of the collected gas, and generates a detection sensing signal;

[0098] In an optional implementation of this embodiment, the gas acquisition module determines the gas composition based on a gas signal detection function, and the gas signal detection function is specifically: y=ax 2 +bx+c, where x is the gas sampling value and y is the gas concentration.

[0099] a, b, and c are constants, and their values ​​are obtained by numerical fitting based on the gas acquisition module and the standard values ​​obtained by the calibration module, that is, the average value obtained after detecting the signal voltage output by the gas acquisition module 10 times.

[0100] Furthermore, the communication display module displays the generated detection sensing signal.

[0101] S104, the main control module generates a detection processing instruction based on the detection sensing signal, and the multi-dimensional alarm module and the feedback execution module perform an alarm and subsequent processing operations based on the detection processing instruction, and generate a detection processing report;

[0102] In an optional implementation of this embodiment, the main control module determines whether an alarm is required based on the detection sensing signal, wherein in the gas signal detection function, whether x is a flammable gas, when it is determined to be a flammable gas, it is determined whether its gas concentration exceeds the alarm threshold. In this embodiment, when y is greater than 20, the system is adjusted to a low alarm state, and when y is greater than 70, the system is adjusted to a high alarm state.

[0103] In an optional implementation of this embodiment, after the multidimensional alarm module performs an alarm operation, the feedback execution module performs subsequent processing operations, including starting the fresh air module to perform air exchange operations, and starting the access control module and the solenoid valve module to perform combustible gas recovery operations.

[0104] S105. The main control module sends the detection processing report to a remote host computer based on the wireless signal transmission module.

[0105] In an optional implementation of this embodiment, the main control module sends the detection processing report to a remote host computer through a wireless connection based on the wireless signal transmission module.

[0106] In summary, the second embodiment of the present invention provides a wireless flammable gas alarm method for controlling the wireless flammable gas alarm system in the first embodiment. By setting the command input unit, the wireless remote control unit and the communication display unit in the human-computer interaction module, and the communication antenna, the command modulated infrared light wave is generated to transmit the work command. At the same time, the wireless connection between the main control module and the remote host computer is realized based on the wireless signal transmission module, which overcomes the disadvantages of the traditional flammable gas alarm system that cannot realize remote data monitoring and data transmission sharing, optimizes and enriches the realization forms and methods of modern multifunctional flammable gas alarm, realizes on-site and remote centralized real-time monitoring, is easy to meet the fire safety requirements for the system fire and explosion protection, has the characteristics of networking, intelligence and high efficiency, and realizes more intelligent and efficient gas monitoring and early warning functions.

[0107] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0108] In addition, the embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A wireless flammable gas alarm system, characterized in that: The system comprises a main control module, a human-computer interaction module, a feedback execution module, a gas acquisition module, a multi-dimensional alarm module, a self-protection module and a power supply module, wherein the main control module is connected to the human-computer interaction module, the feedback execution module, the gas acquisition module, the multi-dimensional alarm module, the self-protection module and the power supply module respectively; The human-computer interaction module includes a command input unit, a wireless remote control unit and a communication display unit, wherein the command input unit is connected to the wireless remote control unit, the wireless remote control unit is connected to the communication display unit, the communication display unit is connected to the main control module, the command input unit receives a control command and generates a corresponding command code, the wireless remote control unit generates a command modulated infrared light wave according to the command code and a preset remote control frequency, and the communication display unit sends the command modulated infrared light wave to the main control module; The system also includes a wireless signal transmission module, and the main control module is connected to a remote host computer through communication based on the wireless signal transmission module.

2. The wireless flammable gas alarm system according to claim 1, characterized in that: The main control module includes a microprocessor, a gas signal transceiver module, a host computer communication module, a power control module, and an auxiliary circuit module. The microprocessor is respectively connected to the gas signal transceiver module, the host computer communication module, the power control module, and the auxiliary circuit module. The gas signal transceiver module is connected to the gas acquisition module, the host computer communication module is connected to the wireless signal transmission module, the power control module is connected to the power module, and the auxiliary circuit module is used to assist the microprocessor in working.

3. The wireless flammable gas alarm system according to claim 1, characterized in that: The gas collection module includes a gas collection device, a gas sensor device, and an induction signal filter. The gas collection device is connected to the gas sensor device, the gas sensor device is connected to the induction signal filter, and the induction signal filter is connected to the main control module. The gas collection device collects gas, and the gas sensor device has a built-in gas sensing circuit. The gas sensing circuit detects the composition of the collected gas and determines whether it is a combustible gas. After the detection is completed, a detection sensing signal is generated. The induction signal filter filters the detection sensing signal and transmits it to the main control module.

4. The wireless flammable gas alarm system according to claim 1, characterized in that: The multi-dimensional alarm module comprises an audible and visual alarm module, a voice alarm module, a short message alarm module and a telephone alarm module, and the audible and visual alarm module, the voice alarm module, the short message alarm module and the telephone alarm module are arranged in a distributed and parallel manner.

5. The wireless flammable gas alarm system according to claim 1, characterized in that: The feedback execution module includes a fresh air module, an access control module, and a solenoid valve module.

6. The wireless flammable gas alarm system according to claim 1, characterized in that: The self-protection module includes a fault detection module, a calibration module, an anti-reverse connection module, and a lightning protection module. The fault detection module is used to perform a fault self-check operation on the system, and the calibration module is used to perform a zero adjustment operation on the system.

7. The wireless flammable gas alarm system according to claim 1, characterized in that: The power module comprises a primary power module, a secondary power module and a battery, the primary power module is connected to the secondary power module, the battery and a mains interface, the battery is connected to the secondary power module, and the secondary power module is connected to the main control module.

8. The wireless flammable gas alarm system according to claim 1, characterized in that: The communication display unit includes a digital display unit and a signal light display unit.

9. The wireless flammable gas alarm system according to claim 1, characterized in that: The communication display unit further comprises a communication antenna, which is a monopole antenna.

10. A wireless flammable gas alarm method, characterized in that: The method is used to control the wireless flammable gas alarm system according to any one of claims 1 to 9 to operate, and the method comprises: The main control module generates a system initialization instruction and controls the self-protection module to perform a fault self-check operation and a zero adjustment operation; The human-computer interaction module generates an instruction to modulate an infrared light wave, and sends the instruction to modulate the infrared light wave to the main control module, and the main control module generates a detection instruction based on the instruction to modulate the infrared light wave; The gas collection module collects gas based on the detection instruction, detects the components of the collected gas, and generates a detection sensing signal; The main control module generates a detection processing instruction based on the detection sensing signal, and the multi-dimensional alarm module and the feedback execution module perform an alarm and subsequent processing operations based on the detection processing instruction, and generate a detection processing report; The main control module sends the detection processing report to a remote host computer based on the wireless signal transmission module.

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