Split type gas detection device

Abstract

The utility model discloses a kind of split type gas detection devices, belong to gas detection technical field, including split setting host case and gas detection key;The gas detection key includes first control unit and with signal connection gas detection unit and first communication unit;The host case includes second control unit and with connection gas conveying unit;The host case is equipped with for the gas detection channel and detection interface of the gas conveying unit and gas detection unit for being connected to the gas detection key;The first control unit is connected with second control unit by first communication unit and establishes communication connection.The utility model improves the utilization of sensor, facilitates later maintenance calibration, simultaneously reduce the quantity of gas sensor that need to be equipped, substantially reduce gas detection cost.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to a split-type gas detection device. Background Technology

[0002] Fumigation is a grain storage method that uses chemical agents to inhibit the life activities of the grain itself and microorganisms, thereby extending storage time. Currently, the grain fumigation industry requires simultaneous monitoring of phosphine, oxygen, and carbon dioxide gas concentrations in warehouses. For large-scale plants, due to the large number of warehouses, a large number of gas detection devices are typically needed to improve detection efficiency, leading to increased production and maintenance costs. The most expensive component in gas detection equipment is the gas sensor. For proper equipment operation, gas sensors must be calibrated every six months, and replaced if problems arise. Furthermore, since gas concentrations in warehouses typically change only after a period of time, gas detection equipment does not require prolonged standby operation. The low detection frequency and long periods of inactivity of the sensors result in redundancy in sensor configuration for gas detection equipment.

[0003] In the prior art, Chinese utility model patent CN219935795U discloses a gas detection alarm device and system. The device includes a main housing and a detection housing that engages with the main housing. A control main board is located inside the main housing, and a gas detection board is located inside the detection housing. The main housing and the detection housing are independent of each other. The gas detection board is connected to the control main board via a pluggable wiring connection. The gas detection board includes at least two types of gas sensor interfaces, each connected to a corresponding type of gas sensor. Each gas sensor is used to detect the concentration information of a target gas in the detection housing, and the control main board determines whether to generate an alarm command based on the concentration information. This patent mainly addresses the issue of sensor replacement; as a small gas detection device, it cannot support multi-channel gas path detection. Utility Model Content

[0004] This invention aims to solve the problem of low sensor utilization and increased production costs in existing gas detection equipment. It proposes a split-type gas detection device and system, which separates the gas detection part as a universal "key" to start gas detection, thereby improving the versatility and utilization of the sensor, facilitating later maintenance, and reducing production costs.

[0005] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows: A split-type gas detection device includes a main unit and a gas detection key, which are separately configured. The gas detection key includes a first control unit and a gas detection unit and a first communication unit connected thereto. The main unit includes a second control unit and a gas delivery unit connected thereto. The main unit and the gas detection key are provided with a gas detection channel and a detection interface for connecting the gas delivery unit and the gas detection unit. The first control unit establishes a communication connection with the second control unit through the first communication unit. Furthermore, the gas delivery unit includes a gas delivery pipeline and a control valve and a gas delivery pump connected to the gas delivery pipeline, wherein the gas delivery pump and the control valve are both electrically connected to the second control unit.

[0006] Furthermore, the main unit is equipped with multiple air inlet connectors corresponding to different gas collection channels, and the gas delivery pipeline includes multiple air inlet pipes, which are connected one-to-one with each gas collection channel. Each air inlet pipe is connected to an independent control valve.

[0007] Furthermore, the gas delivery pipeline also includes a cleaning pipeline, and the main unit is equipped with a cleaning connector that connects to the cleaning pipeline.

[0008] Furthermore, the main unit is also equipped with an LCD touch screen, manual control buttons, and a 4G module, all of which are electrically connected to the second control unit.

[0009] Furthermore, the gas detection unit includes several sensors for detecting different types of gases, and each gas sensor can be detachably connected to the gas detection key.

[0010] Furthermore, the second control unit is also connected to an AC-DC switching power supply, which is connected to the power grid via a circuit breaker switch.

[0011] Furthermore, the gas detection key is also equipped with an indicator light, a buzzer, and a debugging serial port, which are connected to the first control unit via signals.

[0012] Furthermore, the second control unit is also connected to various locks, switches, and audible and visual alarms via signal lines.

[0013] Furthermore, the first communication unit and the second communication unit adopt a power supply communication connector or a wireless transmission module.

[0014] The working principle of this utility model is as follows: Connect the key to the detection and communication interfaces of the chassis to connect the gas detection key to the gas detection channel and communication link inside the main chassis. The first control unit opens the control valves on the corresponding gas delivery pipelines in sequence according to the pre-set detection program, so that the gas in the corresponding gas collection channel is delivered to the gas sensor group for detection. The detected gas flows back to the chamber or is discharged to the waste gas treatment device through the exhaust channel. The detection data is sent to the first control unit for storage, or transmitted to the second control unit through the power supply and communication connector between the key and the chassis. The detection results are displayed on the LCD touch screen and uploaded to the management platform for analysis and processing via the 4G module.

[0015] In summary, this utility model has the following advantages: 1. The split-type gas detection device of this utility model separates the gas detection unit from the traditional gas detection equipment, forming a smaller and lighter "gas detection key" that can be used in other identical main unit boxes to realize gas detection, which improves the utilization rate of the sensor, facilitates later maintenance and calibration, and reduces the number of gas sensors required in large parks, thus significantly reducing the cost of gas detection.

[0016] 2. The gas detection key in this utility model is highly integrated, plug-and-play, easy to disassemble, small in size and easy to carry. It can be used in multiple compartments for single use or in a single compartment for long-term use. It can be used efficiently within the validity period, saving costs. 3. In this utility model, the chassis integrates multiple air intake pipes and multiple sets of pneumatic solenoid valves. The number of sets of air pipes to be detected can be set as needed. The extracted gas can be returned to the chamber through the exhaust channel or discharged to the waste gas treatment device. 4. In this utility model, the main unit also provides multiple sets of external control signal interfaces, which can realize linkage such as opening and closing the door and issuing early warnings based on the detection results; 5. In this utility model, a unified standard detection interface is designed between the chassis and the key, which is plug-and-play and easy to disassemble; the chassis and the key are connected through a unified standard communication interface, which powers the key and enables communication, and the two parties perform data transfer according to the protocol. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, wherein: Figure 1 This is a schematic diagram of the split-type gas detection device of this utility model; Figure 2 This is a schematic diagram of the overall structure of the split-type gas detection device of this utility model (connecting lines and connecting pipes are omitted). Figure 3 This is the state of the split-type gas detection device of this utility model. Figure 1 ; Figure 4 This is the state of the split-type gas detection device of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the internal structure of the gas detection key in this utility model.

[0018] In the picture: 1. Main unit chassis; 2. Gas detection key; 101. Inlet pipe; 102. Control valve; 103. Gas delivery pump; 104. LCD touch screen; 105. Manual control button; 106. Inlet connector; 107. Circuit breaker switch; 108. AC-DC switching power supply; 109. Detection interface; 110. IO control board; 111. 4G module; 112. Cleaning connector; 201. Sensor module; 202. Indicator light; 203. Power supply and communication connector; 204. Main control board; 205. Debugging serial port. Detailed Implementation

[0019] To more clearly illustrate this utility model, the following description, in conjunction with preferred embodiments and accompanying drawings, further clarifies the present invention. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this utility model.

[0020] Example 1: like Figures 1 to 5 As shown: A split-type gas detection device includes a main unit housing 1 and a gas detection key 2, which are separately configured. The gas detection key 2 includes a first control unit and a gas detection unit and a first communication unit connected thereto. The main unit housing 1 includes a second control unit and a gas delivery unit connected thereto. The main unit housing 1 and the gas detection key 2 are provided with a gas detection channel and a detection interface 109 for connecting the gas delivery unit and the gas detection unit. The first control unit establishes a communication connection with the second control unit through the first communication unit.

[0021] The gas detection channel includes an intake channel and an exhaust channel.

[0022] In the split-type gas detection device, the main unit 1 is primarily responsible for communication and execution control, while the gas detection key 2 is responsible for detection and data storage. The key is highly integrated, plug-and-play, easy to disassemble, small in size and easy to carry. It can be used for single-use in multiple compartments or for long-term use in a single compartment, and can be used efficiently within its validity period, thereby saving costs.

[0023] The working principle of this utility model is as follows: First, the detection interface 109 on the gas detection key 2 is inserted into the detection interface 109 on the main unit box 1 to connect the gas detection key 2 with the gas detection channel inside the main unit box 1; then, the first control unit starts the gas delivery unit according to the set detection program and delivers the gas to be detected to the gas detection unit for detection; after the detection is completed, the gas detection unit sends the detection data to the first control unit for storage, or sends it to the second control unit for analysis and processing through the first communication unit.

[0024] In this scheme, the first control unit adopts the main control board 204, and the second control unit adopts the IO control board 110.

[0025] The first and second communication units can use a standardized power supply connector, or they can use a wireless transmission module or other communication methods.

[0026] This invention separates the gas detection unit from traditional gas detection equipment, forming a small and portable "gas detection key 2". This allows it to be used in other identical main unit boxes 1 to perform gas detection, improving the utilization rate of the sensors in the gas detection unit, reducing the number of gas sensors required in large parks, and significantly reducing the cost of gas detection.

[0027] Example 2: Based on Example 1, further, In this embodiment, the gas delivery unit includes a gas delivery pipeline and a control valve 102 and a gas delivery pump 103 connected to the gas delivery pipeline. Both the gas delivery pump 103 and the control valve 102 are electrically connected to the second control unit. Preferably, in this solution, the main unit 1 is provided with multiple air inlet connectors 106 corresponding to different gas collection channels. The gas delivery pipeline includes multiple air inlet pipes 101, each corresponding to a gas collection channel. Each air inlet pipe 101 is connected to an independent control valve 102. The second control unit can control the control valves 102 on different gas delivery pipelines according to a set detection program, setting the number of gas pipes to be detected and the detection sequence as needed. The extracted gas can be returned to the chamber through the exhaust channel or discharged to the waste gas treatment device.

[0028] Example 3: Based on Embodiment 2, the gas delivery pipeline further includes a cleaning pipeline, and the main unit 1 is provided with a cleaning connector 112 connected to the cleaning pipeline. The cleaning pipeline is connected to the outside air through the cleaning connector 112. After each test or a round of tests is completed, the control valve 102 on the cleaning pipeline is opened to allow outside air to clean the residual gas in the sensor detection chamber. This can improve the accuracy of the next test, protect the sensor, and extend its service life.

[0029] Furthermore, the main unit 1 is also equipped with an LCD touch screen 104, manual control buttons 105, and a 4G module 111, all of which are electrically connected to the second control unit. The LCD touch screen 104 allows setting parameters such as the number of gas collection channels, channel exhaust time, collection time, and timed collection time. After collection, the LCD touch screen 104 displays information such as the gas concentration value of each channel, the collection period, and the detection time. The manual control buttons 105 include a collection button, an exit button, and an exhaust button. Pressing the collection button allows for sequential collection of gas concentration data from each gas collection channel in a set order; pressing the exit button exits the current working mode and restores the initial state; pressing the exhaust button, in the initial state, draws in external air to the sensor for exhaust. The 4G module 111 supports data transmission, reporting, and remote control.

[0030] The second control unit is also connected to an AC-DC switching power supply 108; the AC-DC switching power supply 108 is connected to the power grid through a circuit breaker switch 107 to supply power to the entire device.

[0031] Example 4: Based on any of the above embodiments, further, In this embodiment, the gas detection unit includes a sensor module 201, which includes several gas sensors for detecting different gas types, such as oxygen, nitrogen, phosphine, methane, etc., and one or more gas sensors can be configured as needed. Each gas sensor can be detachably connected to the gas detection key 2, for example, the sensors can be designed as plug-in type, and the number of sensors can be increased or decreased, and the sensor type can be changed according to detection requirements.

[0032] like Figure 5 As shown, preferably, the gas detection key 2 is also equipped with an indicator light 202, a buzzer, and a debugging serial port 205. The indicator light 202, buzzer, and debugging serial port 205 are connected to the first control unit via signals. The indicator light 202 is used to indicate the program running status, such as whether the calibration node has been reached; the buzzer is used to sound a reminder when the calibration node is reached; the debugging serial port 205 is used for program OTA upgrades, parameter settings, reading and exporting detection data, sensor calibration, etc.

[0033] Example 5: Based on any of the above embodiments, further, The second control unit is also connected to various locks, switches, and audible and visual alarms via signal lines. The second control unit sends control signals to control the corresponding equipment to perform actions based on the detection results, such as opening the door when the gas concentration meets the standard and sounding and visual alarms when the concentration does not meet the standard.

[0034] The workflow of this utility model is as follows: Insert the key's detection interface 109 and power supply / communication interface into the chassis slot to connect the gas detection channel and power supply / communication channel between the main chassis 1 and the gas detection key 2, and it can be used immediately. After connecting the key and the main unit 1, the main control board 204 on the key communicates with the IO control board 110 of the main unit 1, the IO control circuit of the main unit 1 is activated and starts to work, and the key sensor module 201 begins to preheat and wait for detection. Pressing the acquisition button on the main unit 1 causes the IO control board 110 to control solenoid valve A to disconnect the cleaning connector 112, connect the air inlet connector 106, and sequentially open solenoid valves 1 to 6. Simultaneously, the IO control board 110 controls the gas delivery pump 103 to draw air, which is then transmitted to the sensor module 201 of the key via the connection management system. The sensor module 201 starts gas detection after a certain delay (ensuring that the detected gas is the gas inside the chamber, not the gas in the pipeline). The key main control board 204 reads the detection value of the sensor module 201 at a certain frequency, performs comprehensive processing on the data according to the detection algorithm to obtain the final detection value of the pipeline, and then sequentially detects the remaining pipelines. After the data is detected, the main control board 204 sends a control signal to the I / O control board 110 of the host chassis 1 based on the final detection results and control logic. The I / O control board 110 controls various locks, switches, and warning lights to perform corresponding actions. At the same time, the I / O control board 110 can report the detection data to the server through the 4G module 111 as needed.

[0035] Furthermore, after completing a round of testing, the key main control board 204 can write the corresponding chassis, testing time, testing value, and control information into memory for backup. When needed, it can read historical testing data by connecting to a computer via a serial port and the key. After each test or a round of testing is completed, the key main control board 204 communicates with the chassis IO control board 110 to perform pipeline cleaning. The IO control board 110 controls the solenoid valve-A to open the cleaning interface, disconnects the air inlet connector 106, and controls the gas delivery pump 103 to draw in clean outside air to clean the internal pipelines and sensor pipelines of the main chassis 1.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A split-type gas detection device, characterized in that, The system includes a separate main unit (1) and a gas detection key (2); the gas detection key (2) includes a first control unit and a gas detection unit and a first communication unit connected thereto; the main unit (1) includes a second control unit and a gas delivery unit connected thereto; both the main unit (1) and the gas detection key (2) are provided with a gas detection channel and a detection interface (109) for connecting the gas delivery unit and the gas detection unit; the first control unit establishes a communication connection with the second control unit through the first communication unit.

2. The split-type gas detection device as described in claim 1, characterized in that, The gas delivery unit includes a gas delivery pipeline and a control valve (102) and a gas delivery pump (103) connected to the gas delivery pipeline. The gas delivery pump (103) and the control valve (102) are both electrically connected to the second control unit.

3. The split-type gas detection device as described in claim 2, characterized in that, The main unit (1) is provided with multiple air inlet connectors (106) corresponding to different gas collection channels. The gas delivery pipeline includes multiple air inlet pipes (101). The multiple air inlet pipes (101) are connected to each gas collection channel in a one-to-one correspondence. Each air inlet pipe (101) is connected to an independent control valve (102).

4. A split-type gas detection device as described in claim 3, characterized in that, The gas delivery pipeline also includes a cleaning pipeline, and the main unit (1) is provided with a cleaning connector (112) connected to the cleaning pipeline.

5. A split-type gas detection device as described in claim 1, characterized in that, The main unit (1) is also equipped with an LCD touch screen (104), a manual control button (105) and a 4G module (111), all of which are electrically connected to the second control unit.

6. A split-type gas detection device as described in claim 1, characterized in that, The gas detection unit includes a sensor module (201), which includes several gas sensors for detecting different types of gas. Each gas sensor can be detachably connected to the gas detection key (2).

7. A split-type gas detection device as described in claim 1, characterized in that, The second control unit is also connected to an AC-DC switching power supply (108), which is connected to the power grid through a circuit breaker switch (107).

8. A split-type gas detection device as described in claim 1 or 6, characterized in that, The gas detection key (2) is also equipped with an indicator light (202), a buzzer and a debugging serial port (205), which are connected to the first control unit.

9. A split-type gas detection device as described in claim 1, characterized in that, The second control unit is also connected to various locks, switches, and audible and visual alarms via signal lines.

10. A split-type gas detection device as described in claim 1, characterized in that, The first communication unit and the second communication unit adopt a power supply communication connector (203) or a wireless transmission module.

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