Safe combustible gas composite detection device
By designing a safe combustible gas composite detection device including a microcontroller, CO detection module, H2 detection module, CAN safety snatch and power safety snatch, the safety risks, volume and cost problems of existing devices when working in flammable and explosive environments are solved, and higher safety, smaller volume and lower costs are achieved.
Patent Information
- Application Number
- CN202421130568.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-22
AI Technical Summary
When existing H2 and CO composite detection devices work in flammable and explosive environments, they may cause electric sparks and thermal effects, resulting in ignition of combustible gases, which poses a greater safety risk. Moreover, due to the need to use a heavy explosion-proof shell, the device is large in size and high in cost, making it difficult to meet the installation space and cost requirements.
A safe combustible gas composite detection device is designed, using components such as microcontroller, CO detection module, H2 detection module, CAN safety snatch and power safety snatch. Through the connection between the microcontroller and the detection module, CO and H2 concentration values are collected, and alarm information is issued when the predetermined threshold is exceeded. At the same time, the energy released through the CAN safety gate and power safety gate control circuit ensures that the device does not cause flammable and explosive gases in normal and faulty states.
It improves the safety of the device, avoids the risk of fires in flammable and explosive environments, reduces the volume and weight of the device, reduces installation difficulty and production costs, and enhances the comprehensiveness of detection functions and early fire warning capabilities.
Smart Images
Figure CN222562101U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire detection, in particular to a safe combustible gas composite detection device. Background Art
[0002] Combustible gas detection is one of the important means of fire warning. 2 ) and carbon monoxide (CO) are the main combustible gases to be detected. 2 The combined detection devices of H and CO are mostly used in civilian scenes and the use environment is relatively limited. In the environment where flammable and explosive gases may exist, such as petroleum, petrochemical, coal, energy storage power stations, etc. 2 The CO composite detection device may ignite the combustible gas in the working environment due to the electric sparks and thermal effects generated by the product itself, causing immeasurable losses and posing a great safety risk.
[0003] Currently, in order to prevent H 2 The combined detection device of H and CO ignites the combustible gas during operation, which is usually achieved by setting up a flameproof enclosure. However, due to the large size and high cost of the flameproof enclosure, 2 The composite detection device of CO can be used in flammable and explosive places, but it has great restrictions on installation space and cost, and it is difficult to meet the current usage needs. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a safe combustible gas composite detection device, which has the advantages of improved safety, small size and low cost.
[0005] The purpose of the utility model is achieved by the following technical solutions:
[0006] A safe combustible gas composite detection device, comprising:
[0007] Microcontroller;
[0008] A CO detection module, which is connected to the microcontroller and is used to collect the CO concentration in the environment and generate a CO concentration value to feed back to the microcontroller;
[0009] H 2 Detection module, the H 2 The detection module is connected to the microcontroller and is used to collect H 2 concentration and generate H 2 The concentration value is fed back to the microcontroller;
[0010] A CAN safety fence, the CAN safety fence is connected to the microcontroller for communication transmission;
[0011] An alarm module is connected to the microcontroller, and the CO concentration value exceeds a first predetermined threshold or H 2 When the concentration exceeds a second predetermined threshold, the microcontroller controls the alarm module to issue an alarm message;
[0012] A power supply circuit is connected to the microcontroller and is used to provide an operating voltage. The power supply circuit is also connected to a power supply safety fence, and the power supply safety fence is connected to an external host.
[0013] To implement the above technical solution, when in use, the CO detection module and H 2 The detection module collects CO concentration and H 2 concentration, and convert it into CO concentration and H 2 The concentration value is fed back to the microcontroller, which compares the CO concentration value with the first predetermined threshold value and converts the H 2 The concentration value is compared with the second predetermined threshold value. When the CO concentration value exceeds the first predetermined threshold value or H 2 When the concentration value exceeds the second predetermined threshold value, the microcontroller controls the alarm module to send out an alarm message, prompting the supervisor to handle it in time. At the same time, it can be connected to the display device, external host, etc. through the CAN safety barrier to display data or connect to the fire warning system for fire extinguishing. Since the CAN safety barrier and the power safety barrier are set, the energy released by the circuit can be controlled during use, so that the device will not release energy sufficient to ignite flammable and explosive gases in normal working and fault conditions, thereby improving the overall safety of the device without the need to use a heavy explosion-proof casing, so it can maintain a smaller size and lighter weight, and installation is also more convenient, and can greatly reduce the production cost of the product.
[0014] In some exemplary embodiments, the CO detection module includes: a plurality of CO sensors, and a first conditioning circuit connected to the CO sensors, wherein the first conditioning circuit is used to condition the CO concentration value into a digital signal readable by the microcontroller.
[0015] The above technical solution is implemented to realize the detection and collection of CO concentration and the transmission of CO concentration value.
[0016] In some exemplary embodiments, the H 2 The detection module includes: several H 2 Sensor, and the H 2 The sensor is connected to a second conditioning circuit, wherein the second conditioning circuit is used to convert H 2 The concentration value is conditioned into a digital signal readable by the microcontroller.
[0017] Implement the above technical solution to achieve H 2 Concentration detection and collection as well as H 2 Transmission of concentration values.
[0018] In some exemplary embodiments, the alarm module includes one or more of a buzzer, an audible and visual alarm, and a speaker.
[0019] In some exemplary embodiments, the microcontroller is further connected to a plurality of temperature sensors, and the temperature sensors are used to collect the ambient temperature and generate temperature values to feed back to the microcontroller.
[0020] By implementing the above technical solution, the ambient temperature value can be collected simultaneously, which further expands the detection function of the device, improves the comprehensiveness of detection, and is conducive to the realization of early fire warning detection.
[0021] In some exemplary embodiments, the microcontroller is further connected to an indicator light, and the indicator light is used to indicate a working status.
[0022] By implementing the above technical solution, the working status of the device is indicated by the indicator light, which facilitates real-time monitoring of the device.
[0023] In summary, compared with the prior art, the utility model has the following beneficial effects:
[0024] The utility model provides a safe combustible gas composite detection device, comprising: a microcontroller; a CO detection module, the CO detection module is connected to the microcontroller, and is used to collect the CO concentration in the environment and generate a CO concentration value to feed back to the microcontroller; 2 Detection module, the H 2 The detection module is connected to the microcontroller and is used to collect H 2 concentration and generate H 2 The concentration value is fed back to the microcontroller; a CAN safety fence, the CAN safety fence is connected to the microcontroller for communication transmission; an alarm module, the alarm module is connected to the microcontroller, and the CO concentration value exceeds a first predetermined threshold or H 2 When the concentration exceeds the second predetermined threshold, the microcontroller controls the alarm module to issue an alarm message; the power circuit is connected to the microcontroller and is used to provide a working voltage. The power circuit is also connected to a power safety fence, and the power safety fence is connected to an external host. When in use, the CO detection module and H 2 The detection module collects CO concentration and H 2 concentration, and convert it into CO concentration and H 2 The concentration value is fed back to the microcontroller, which compares the CO concentration value with the first predetermined threshold value and converts the H2 The concentration value is compared with the second predetermined threshold value. When the CO concentration value exceeds the first predetermined threshold value or H 2 When the concentration value exceeds the second predetermined threshold value, the microcontroller controls the alarm module to send out an alarm message, prompting the supervisor to handle it in time. At the same time, it can be connected to the display device, external host, etc. through the CAN safety barrier to display data or connect to the fire warning system for fire extinguishing. Since the CAN safety barrier and the power safety barrier are set, the energy released by the circuit can be controlled during use, so that the device will not release energy sufficient to ignite flammable and explosive gases in normal working and fault conditions, thereby improving the overall safety of the device without the need to use a heavy explosion-proof casing, so it can maintain a smaller size and lighter weight, and installation is also more convenient, and can greatly reduce the production cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.
[0026] The numbers and letters in the figure represent the corresponding component names:
[0027] 10. CO detection module; 20. H 2 Detection module. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] like Figure 1 As shown, the utility model provides a safe combustible gas composite detection device, including: a microcontroller; a CO detection module 10, the CO detection module 10 is connected to the microcontroller, and is used to collect the CO concentration in the environment and generate a CO concentration value to feed back to the microcontroller; H 2 Detection module 20, H 2 The detection module 20 is connected to the microcontroller and is used to collect H 2 concentration and generate H 2 The concentration value is fed back to the microcontroller; a CAN safety fence, which is connected to the microcontroller for communication transmission; an alarm module, which is connected to the microcontroller, and the CO concentration value exceeds the first predetermined threshold or H 2When the concentration exceeds the second predetermined threshold, the microcontroller controls the alarm module to send out an alarm message; the power circuit is connected to the microcontroller and is used to provide a working voltage. The power circuit is also connected to a power safety fence, which is connected to an external host.
[0030] The microcontroller may specifically include a microcontroller unit (MCU), a central processing unit (CPU), a microprocessor (microprocessor), a digital signal processor (DSP), a programmable controller, a programmable logic device (PLD) or other similar devices or a combination of these devices, and the present invention is not limited thereto. In addition, in some embodiments, each function of the microcontroller may be implemented by one or more circuits. In this embodiment, a high-reliability MCU is preferably used.
[0031] The CO detection module 10 includes: a plurality of CO sensors, and a first conditioning circuit connected to the CO sensors, the first conditioning circuit is used to condition the CO concentration value into a digital signal readable by a microcontroller, the first conditioning circuit can be implemented by, for example, an existing digital-to-analog conversion module, and the number of CO sensors can be set as needed, thereby realizing the detection and collection of CO concentration and the transmission of CO concentration value.
[0032] H 2 The detection module 20 includes: 2 Sensors, and H 2 The sensor is connected to a second conditioning circuit, the second conditioning circuit is used to convert H 2 The concentration value is conditioned into a digital signal that can be read by the microcontroller. The second conditioning circuit can also be implemented using an existing digital-to-analog conversion module. 2 The number of sensors can be set as needed to achieve H 2 Concentration detection and collection as well as H 2 In this embodiment, the CO sensor and H 2 The sensors all use ultra-low power consumption electrochemical type sensors, which can effectively increase the service life of the overall device.
[0033] The alarm module includes one or more of a buzzer, an audible and visual alarm, and a speaker. In this embodiment, the alarm module uses a buzzer, and the alarm information is a buzzer. In actual applications, different alarm faults can also be represented by setting buzzers of different frequencies.
[0034] Both the CAN safety fence and the power safety fence are used to limit the working voltage and current within a certain safety range, so that the energy of the device in the working or fault state is controlled within a safe range that will not ignite flammable and explosive gases. In this embodiment, both the CAN safety fence and the power safety fence can adopt isolated safety fences; and the capacitors in the power supply circuit and other circuit modules in this embodiment all adopt chip ceramic capacitors instead of electrolytic capacitors, so the electrolytic capacitor will not fail due to exhaustion of electrolyte due to time reasons.
[0035] Furthermore, the microcontroller is also connected to a number of temperature sensors, which are used to collect ambient temperature and generate temperature values for feedback to the microcontroller, so that the ambient temperature values can be collected synchronously, further expanding the detection function of the device, improving the comprehensiveness of detection, and facilitating early fire warning detection.
[0036] At the same time, the microcontroller is also connected to an indicator light, which is used to indicate the working status. The indicator light can specifically include a green light, a yellow light and a red light, so as to feedback the different working states of the device such as normal, abnormal and faulty, so as to facilitate real-time monitoring of the device.
[0037] When in use, the CO detection module 10 and H 2 The detection module 20 collects CO concentration and H 2 concentration, and convert it into CO concentration and H 2 The concentration value is fed back to the microcontroller, which compares the CO concentration value with the first predetermined threshold value and converts the H 2 The concentration value is compared with the second predetermined threshold value. When the CO concentration value exceeds the first predetermined threshold value or H 2 When the concentration value exceeds the second predetermined threshold value, the microcontroller controls the alarm module to send out an alarm message, prompting the supervisor to handle it in time. At the same time, it can be connected to the display device, external host, etc. through the CAN safety barrier to display data or connect to the fire warning system for fire extinguishing. Since the CAN safety barrier and the power safety barrier are set, the energy released by the circuit can be controlled during use, so that the device will not release energy sufficient to ignite flammable and explosive gases in normal working and fault conditions, thereby improving the overall safety of the device without the need to use a heavy explosion-proof casing, so it can maintain a smaller size and lighter weight, and installation is also more convenient, and can greatly reduce the production cost of the product.
[0038] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the utility model, and all of them belong to the protection scope of the utility model.
Claims
1. A safe combustible gas composite detection device, characterized in that: include: Microcontroller; A CO detection module, which is connected to the microcontroller and is used to collect the CO concentration in the environment and generate a CO concentration value to feed back to the microcontroller; An H2 detection module, which is connected to the microcontroller and is used to collect the H2 concentration in the environment and generate an H2 concentration value to feed back to the microcontroller; A CAN safety fence, the CAN safety fence is connected to the microcontroller for communication transmission; An alarm module, wherein the alarm module is connected to the microcontroller, and when the CO concentration value exceeds a first predetermined threshold or the H2 concentration exceeds a second predetermined threshold, the microcontroller controls the alarm module to issue an alarm message; A power supply circuit is connected to the microcontroller and is used to provide an operating voltage. The power supply circuit is also connected to a power supply safety fence, and the power supply safety fence is connected to an external host.
2. The safe combustible gas composite detection device according to claim 1 is characterized in that: The CO detection module includes: a plurality of CO sensors and a first conditioning circuit connected to the CO sensors, wherein the first conditioning circuit is used to condition the CO concentration value into a digital signal readable by the microcontroller.
3. The safe combustible gas composite detection device according to claim 1 or 2, characterized in that: The H2 detection module includes: a plurality of H2 sensors and a second conditioning circuit connected to the H2 sensors, wherein the second conditioning circuit is used to condition the H2 concentration value into a digital signal readable by the microcontroller.
4. The safe combustible gas composite detection device according to claim 1 is characterized in that: The alarm module includes one or more of a buzzer, an audible and visual alarm, and a loudspeaker.
5. The safe combustible gas composite detection device according to claim 1 is characterized in that: The microcontroller is also connected to a plurality of temperature sensors, and the temperature sensors are used to collect the ambient temperature and generate temperature values to feed back to the microcontroller.
6. The safe combustible gas composite detection device according to claim 1 is characterized in that: The microcontroller is also connected to an indicator light, which is used to indicate a working state.