TW202238100A - Gas sensing device with replaceable sensor element carrier and sensing method thereof - Google Patents

Abstract

The invention provides a gas sensing device with replaceable sensor element carrier, which is adjacent to a gas flow path and includes: several sensor element carriers and a circuit board. Each sensor element carrier has at least one sensor element and a judgment unit on one side, and a circuit layout on the other side, and the sensor element is electrically connected to the judgment unit by the circuit layout; wherein, one of a plurality of sensor element carriers is adjacent to the gas flow path and senses the gas by the sensor element. The circuit board is at a distance from the sensor element carrier, and is connected to one of the sensor element carriers by a plurality of assemblies, and has a signal connection unit and a plurality of power supply and signal processing units, the power supply and signal processing units are respectively connected to the signal connection unit in electrical communication; wherein, the judgment unit is coupled to the signal connection unit, so that the signal connection unit judges the sensor element used for sensing the gas, and activates the corresponding power supply and signal processing unit to judge the sensed gas to generate a gas data.

Description

Gas sensing device with replaceable sensor element carrier and sensing method thereof

The present invention relates to a gas sensing device, in particular to a gas sensing device with replaceable sensor element carrier for adjusting various sensor elements in response to various environments and a sensing method thereof.

The gas sensing device provides a standard judgment standard based on the measured gas, replacing artificial uncertainties, and is widely used in many fields such as energy, industry, agriculture, transportation, science and technology, national defense, and environmental protection. Although the gas sensing devices have many uses, most of the gas sensing devices cannot be popularized due to the high price and the inconvenience of carrying.

The current design of gas sensing devices is generally based on the customized design of the algorithm and sensing chip for the gas to be detected. The designed device or algorithm can only detect specific gases, so the specific gas will be limited. The environmental conditions used by the gas sensing device can only be detected and monitored for the specific gas it is set to. Although this specific gas sensing device has high reliability and accuracy, it is expensive and cannot be widely used. Simultaneous detection of multiple gases.

Furthermore, in the real environment, the gas does not simply exist alone, but exists mixed with other gases. Therefore, if you want to detect and monitor mixed gases, you should use metal oxide semiconductors and Electrochemical sensors. These two sensors not only have great advantages over the above-mentioned specific gas sensing devices in terms of volume, price, and usage environment restrictions, but also suffer from lower accuracy and poor specificity. The above-mentioned specificity refers to whether the gas sensing device only responds to a specific gas, and poor specificity will make it difficult to confirm what kind of gas the reaction measured by a single sensing device is caused by in practical applications.

In view of the deficiency, the creator of this case tried his best to research and invent, and finally developed the gas sensing device with replaceable sensor element carrier of the present invention, which can not only solve the problem that a specific gas sensing device can only sense one gas at a time At the same time, it also improves the shortcomings of the accuracy and specificity of the two gas sensing devices currently used, metal oxide semiconductors and electrochemical sensors.

The object of the present invention is to provide a gas sensing device and a sensing method thereof with replaceable sensor element carriers, by connecting carriers carrying various sensor elements on the same circuit substrate body, the circuit substrate body The connected sensor elements can be judged to achieve the effect of adjusting and connecting various sensor elements in response to various environments.

The object of the present invention is to provide a gas sensing device and a sensing method with replaceable sensor element carrier, by avoiding the circuit layout from being in direct contact with the gas to be measured, so as to separate the analog signal and the digital signal and improve the processing efficiency Speed calculation mixed with the effect of multiple gas detection and monitoring.

The purpose of the present invention is to provide a gas sensing device and its sensing method with replaceable sensor element carrier, by adding a gas carrying cavity outside the gas flow channel to be measured, forming an active air intake form of a closed cavity , in order to achieve the effect of maintaining a gas sensing environment with a stable air flow rate and avoiding the effects of diffusion and turbulence.

In order to achieve the above purpose, the present invention provides a gas sensing device with replaceable sensor element carriers, which is adjacent to a gas flow channel and includes: several sensor element carriers and a circuit substrate. Each sensor element carrier has at least one sensor element and a judgment unit on one side, and the other side of the sensor element carrier has a circuit layout, and the sensor element communicates with the judgment unit through the circuit layout. connect. Wherein, the gas is sensed by the sensor element when one of the sensor element carriers is adjacent to the gas flow channel.

The circuit substrate body has a distance from the sensor element carrier, and is connected to one of the sensor element carriers with a plurality of assemblies. The circuit substrate body has a signal interface unit and several power supply and signal A processing unit, several of the power supply and signal processing units are respectively connected to the communication unit by telecommunication. Wherein, the interrogating unit is coupled to the interfacing unit, so that the interrogating unit judges the sensor element used for sensing the gas, and the interrogating unit actuates the corresponding power supply and signal processing unit to interpret the sensed gas. The measured gas is used to generate a gas data.

In a preferred embodiment of the present invention, the gas sensing device further includes a gas bearing cavity, the gas bearing cavity is connected to one side of the sensor element carrier, and the gas flow channel is located therein. The gas bearing cavity has an inlet pipe and an exhaust pipe, the air inlet and the exhaust pipe are separated by a height, and the exhaust pipe is adjacent to the sensor element carrier; The gas channel enters the gas bearing cavity through the inlet pipe. The gas bearing cavity further has a gas diffuser, which is located at a position corresponding to the inlet pipe opening and has a distance from the air inlet nozzle. Wherein, when the gas enters the gas bearing chamber through the inlet pipe, the gas will be blocked by the gas diffuser, and the gas will be diffused into the gas bearing cavity along the outer edge of the diffuser. The air diffuser is an arc-shaped curved surface corresponding to the inlet pipe opening, and the thickness at the center of the air diffuser is smaller than the thickness at the two sides.

In a preferred embodiment of the present invention, the gas bearing cavity further has a side plate, and the side plate extends from the periphery of the gas bearing cavity and abuts against the sensor element carrier. The gas bearing cavity further has a plurality of locking pieces, and the locking pieces are located on the side plate to connect the gas bearing cavity with the sensor element carrier.

In a preferred embodiment of the present invention, the circuit board body further has a transmission unit, which is electrically connected to a plurality of the power supply and signal processing units respectively, and transmits the gas data to a storage unit. The transmission unit is a wireless transmission control interface or a wired transmission control interface, and the storage unit is set on a cloud, and the transmission unit further has a secure digital (SD) card.

In order to achieve the above object, the present invention provides a sensing method of a gas sensing device, which includes the following steps:

Step (a): providing a carrier, a plurality of sensor elements, a circuit substrate body, a gas bearing chamber and a storage unit, the carrier has a circuit layout and a judgment unit, and the judgment unit and the circuit layout For telecommunications connection, the circuit substrate body has a communication unit, a transmission unit, and a number of power supply and signal processing units. Supply and signal processing unit telecommunications connection.

Step (b): Selecting at least one sensor element to be connected to the other side of the carrier having the circuit layout, the sensor element being in telecommunication connection with the circuit layout.

Step (c): Registering a registration message in the judgment unit, the registration message being the sensor element information connected to the carrier.

Step (d): The side of the carrier having the sensor element is connected to the gas bearing cavity, and the side having the circuit layout is connected to the circuit substrate body, and the judgment unit is electrically connected to the communication unit.

Step (e): Positioning the gas-carrying cavity on a gas channel, allowing the gas to be measured to enter the gas-carrying cavity.

Step (f): Create a feature database and store it in the storage unit.

Step (g): Simultaneously activate all the sensor elements on the carrier to sense the gas to be tested, and compare whether the composition of the gas to be measured contains a specific gas characteristic in the characteristic database.

In order to enable your review committee members to have a further understanding and understanding of the characteristics of the present invention and the achieved effects, I would like to provide a better embodiment and a detailed description, as follows:

First, please refer to FIG. 1 to FIG. 2 , which are schematic diagrams of three-dimensional structure assembly and disassembly of a preferred embodiment of the gas sensing device with replaceable sensor element carrier of the present invention. The gas sensing device 1 with replaceable sensor element carrier of the present invention is adjacent to a gas flow channel 2 to sense the state of the gas on the gas flow channel 2 . The gas sensing device 1 with replaceable sensor element carrier of the present invention includes: several sensor element carriers 11 , a circuit substrate body 12 and a gas carrying cavity 13 .

Please also refer to FIG. 6 to FIG. 8 , which are top structural schematic diagrams of several preferred embodiments of the sensor element carrier of the present invention. One side of the sensor element carrier 11, 11a, 11b has at least one sensor element 111, 111a, 111b and a judgment unit 112, 112a, 112b, and the other side of the sensor element carrier 11, 11a, 11b There is a circuit layout (not shown in the figure), and the sensor elements 111, 111a, 111b are electrically connected with the judgment units 112, 112a, 112b through the circuit layout. To put it simply, the reading unit 112, 112a, 112b is an ID of the sensor element carrier 11, 11a, 11b, and records the various sensors arranged on the sensor element carrier 11, 11a, 11b. Elements 111, 111a, 111b. Since the sensors 111, 111a, 111b can sense different gases, and to sense a gas group (Set), it includes a combination of multiple gases, not a single gas. Therefore, the present invention coordinates one of the corresponding sensor element carriers 11, 11a, 11b to be adjacent to the gas flow channel 2 by the state of the gas to be measured, so that the sensor element 111, 111a, 111b senses the gas, and the sensor elements 111, 111a, 111b can sense combinations of various gases. And because the circuit layout (not shown in the figure) is arranged on the other side of the sensor element carrier 11, 11a, 11b, the gas on the gas channel 2 will not corrode or damage the circuit layout, which not only increases the sensing The service life of device element carriers 11, 11a, 11b is improved, and the analog signal and digital signal are separated to improve the performance of processing high-speed calculation and mixed gas detection and monitoring.

Please also refer to FIG. 3 to FIG. 4 , which are schematic diagrams of a side view sectional structure and a top view sectional structure of a preferred embodiment of the gas bearing chamber of the present invention. In order to enable the sensor elements 111, 111a, 111b to more accurately sense the state of the gas on the gas flow channel 2, the present invention connects the gas carrying cavity 13 to the side of the sensor element carrier 11, And make the gas channel 2 inside it. The gas bearing cavity 13 further has a side plate 131 , and the side plate 131 extends out from the periphery of the gas bearing cavity 13 and abuts against the sensor element carrier 11 . The gas bearing chamber 13 further has a plurality of locking pieces 132 , and the locking pieces 132 are located on the side plate 131 to connect the gas bearing chamber 13 with the sensor element carrier 11 . The gas bearing cavity 13 of the present invention has an inlet pipe mouth 133 and an exhaust pipe mouth 134, the air inlet pipe mouth 133 and the exhaust pipe mouth 134 are separated by a height h, and the exhaust pipe mouth 134 is adjacent Relying on the sensor element carrier 11 ; the gas channel 2 enters the gas carrying cavity 13 through the inlet pipe 133 . In a preferred embodiment of the present invention, the gas carrying cavity 13 further has a diffuser 135, the diffuser 135 is located at a position corresponding to the inlet nozzle 133, and is at a distance from the inlet nozzle 133 s, the diffuser 135 is an arc-shaped curved surface corresponding to the intake nozzle 133 , and the thickness t1 at the center of the diffuser is smaller than the thickness t2 at the two sides. Wherein, when the gas enters the gas-carrying cavity 13 through the inlet nozzle 133, the gas will be blocked by the diffuser 135, and the gas will be diffused to the gas along the outer edge of the diffuser 135. In the carrying cavity 13, the gas flow channels 2 can be evenly distributed in the gas carrying cavity 13, so that the information of the gas group (Set) sensed is more accurate. Therefore, the gas-carrying cavity 13 forms an active air intake form of a closed cavity to achieve a gas sensing environment that maintains a stable gas flow rate and prevents it from being affected by diffusion, turbulence, and the like.

Please also refer to FIG. 5, which is a top view block diagram of a preferred embodiment of the circuit substrate body of the present invention. The circuit substrate body 12 of the present invention is separated from the sensor element carrier 11 by a distance d, and is connected to one of the sensor element carriers 11 by a plurality of assembly parts 14, and the assembly part 14 is a bolt. The circuit board body 12 has a communication unit 121 and a plurality of power supply and signal processing units 122 , and a plurality of the power supply and signal processing units 122 are electrically connected with the communication circuit unit 121 respectively. Wherein, the interfacing unit 121 is coupled with the judging unit 112, so that the interfacing unit 121 can determine that the sensor element carrier 11 is the sensor element 111 used for sensing the gas, and then through the interface The interface circuit in the communication unit 121 activates the corresponding power supply and signal processing unit 122 to interpret the sensed gas to generate a gas data.

The circuit board body further has a transmission unit 123, the transmission unit 123 is respectively connected to a plurality of the power supply and signal processing units 122 by telecommunication, and transmits the gas data to a storage unit 3, the transmission unit 123 is a wireless transmission control interface or a wired transmission control interface, and the storage unit 3 is set on a cloud, and the transmission unit 123 further has a secure digital (SD) card to expand and store the increased gas data. In a preferred embodiment of the present invention, firstly, a single sensor element 111 is used to transmit whether there is a target object to be detected in the gas composition to the storage unit 3, so that the storage unit 3 can establish a number of target gases. Feature database; therefore, when sensing the gas to be measured, it will be compared one by one whether the composition of the gas to be measured contains a specific gas feature in the database, which can increase the accuracy of sensing and the advantages of better specificity .

Please refer to FIG. 9 , which is a flow block diagram of a preferred embodiment of the sensing method of the gas sensing device of the present invention. Step 91: Provide a carrier, several sensor elements, a circuit substrate body, a gas-carrying chamber and a storage unit, the carrier has a circuit layout and a judgment unit, and the judgment unit is connected to the circuit layout by telecommunication , the circuit substrate body has a communication unit, a transmission unit, and a plurality of power supply and signal processing units, and a plurality of the power supply and signal processing units are respectively connected to the communication unit by telecommunication, and the transmission unit is respectively connected to a plurality of the power supply and signal processing units. The signal processing unit is telecommunications connected.

Step 92: Selecting at least one sensor element to be connected to the other side of the carrier having the circuit layout, the sensor element being in telecommunication connection with the circuit layout.

Step 93: Register a registration message in the identification unit, the registration message is the sensor element information connected to the carrier.

Step 94: The side of the carrier having the sensor element is connected to the gas bearing chamber, and the side having the circuit layout is connected to the circuit substrate body, and the judgment unit is electrically connected to the communication unit.

Step 95: Position the gas-carrying cavity on a gas channel, allowing the gas to be measured to enter the gas-carrying cavity.

Step 96: Create a feature database and store it in the storage unit.

Step 97: Simultaneously activate all the sensor elements on the carrier to sense the gas to be tested, and compare whether the composition of the gas to be measured contains a specific gas feature in the feature database.

Through the above detailed description, it can be fully demonstrated that the purpose and efficacy of the present invention are progressive in implementation, have great industrial value, and fully meet the requirements of the invention patent, and the application is filed in accordance with the law. Only the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize Solutions obtained by equivalent replacements and obvious changes shall all be included in the protection scope of the present invention.

1: Gas sensing device with replaceable sensor element carrier 11, 11a, 11b: sensor element carrier 111, 111a, 111b: sensor elements 112, 112a, 112b: interpretation unit 12: Circuit board body 121: Communication unit 122: Power supply and signal processing unit 123: Transmission unit 13: Gas bearing cavity 131: side panel 132: lock piece 133: Intake nozzle 134: Exhaust pipe port 135:Air diffuser 2: Gas channel 3: storage unit h: height d: distance s: spacing t1: Thickness at the central position t2: Thickness of both sides 91~97: Steps

FIG. 1 is a schematic diagram of a three-dimensional structure assembly of a preferred embodiment of a gas sensing device with replaceable sensor element carriers according to the present invention. FIG. 2 is an exploded perspective view of the three-dimensional structure of a preferred embodiment of the gas sensing device with replaceable sensor element carrier of the present invention. Fig. 3 is a side view cross-sectional structural schematic diagram of a preferred embodiment of the gas bearing chamber of the present invention. Fig. 4 is a top view sectional structure diagram of a preferred embodiment of the gas bearing chamber of the present invention. Fig. 5 is a top view block diagram of a preferred embodiment of the circuit substrate body of the present invention. Fig. 6 is a top view structural diagram of the first preferred embodiment of the sensor element carrier of the present invention. Fig. 7 is a top view structural diagram of the second preferred embodiment of the sensor element carrier of the present invention. Fig. 8 is a top view structural diagram of the third preferred embodiment of the sensor element carrier of the present invention. FIG. 9 is a schematic block diagram of a preferred embodiment of the sensing method of the gas sensing device of the present invention.

1: Gas sensing device with replaceable sensor element carrier

11: Sensor element carrier

111: sensor element

112: Reading unit

12: Circuit board body

121: Communication unit

122: Power supply and signal processing unit

123: Transmission unit

13: Gas bearing cavity

131: side panel

132: lock piece

133: Intake nozzle

134: Exhaust pipe port

2: Gas channel

3: storage unit

Claims (11)

A gas sensing device with a replaceable sensor element carrier, which is adjacent to a gas flow channel, includes: Several sensor element carriers, each sensor element carrier has at least one sensor element and a judgment unit on one side, and the other side of the sensor element carrier has a circuit layout, the sensor element is in The circuit layout is telecommunications connected with the interpretation unit; wherein, the sensor element senses the gas by one of the plurality of sensor element carriers adjoining the gas flow channel; A circuit substrate body, which is at a distance from the sensor element carrier, and connected to one of the sensor element carriers with a plurality of assemblies, the circuit substrate body has an interface unit and several power supplies and A signal processing unit, a plurality of the power supply and signal processing units are respectively connected to the communication unit by telecommunication; wherein, the judgment unit is coupled to the communication unit, so that the communication unit can judge the sensing used for sensing the gas device components, and the interface unit actuates the corresponding power supply and signal processing unit to interpret the sensed gas to generate a gas data. The gas sensing device with a replaceable sensor element carrier as described in claim 1, wherein the gas sensing device further includes a gas bearing cavity connected to one side of the sensor element carrier , and the gas channel is located inside it. The gas sensing device with a replaceable sensor element carrier as described in claim 2, wherein the gas bearing cavity has an inlet pipe and an exhaust pipe, and the inlet pipe and the exhaust pipe The ports are separated by a height, and the exhaust pipe port is adjacent to the sensor element carrier; the gas flow channel enters the gas carrying cavity through the air intake pipe port. The gas sensing device with a replaceable sensor element carrier as described in claim 3, wherein the gas bearing cavity further has a gas diffuser, and the gas diffuser is located at a position corresponding to the inlet nozzle, and There is a distance from the inlet nozzle; wherein, when the gas enters the gas-carrying cavity through the inlet nozzle, the gas will be blocked by the diffuser, and the gas will be blocked along the diffuser The outer edge diffuses into the gas bearing cavity. The gas sensing device with a replaceable sensor element carrier as described in claim 4, wherein the diffuser is an arc-shaped curved surface corresponding to the inlet nozzle, and the thickness of the central position of the diffuser is less than The thickness of both sides is small. The gas sensing device with a replaceable sensor element carrier as described in claim 2, wherein the gas bearing cavity further has a side plate, and the side plate extends from the outer edge of the gas bearing cavity and abuts against the sensor Component carrier. The gas sensing device with a replaceable sensor element carrier as described in claim 6, wherein the gas bearing cavity further has a plurality of locking pieces, and the locking pieces are located on the side plate, so that the gas bearing cavity and the The sensor element carrier is connected. The gas sensing device with a replaceable sensor element carrier as claimed in Claim 1, wherein the assembly is a bolt. The gas sensing device with a replaceable sensor element carrier as described in claim 1, wherein the circuit substrate body further has a transmission unit, and the transmission unit is electrically connected to a plurality of the power supply and signal processing units respectively, and the The gas data is transferred to a storage unit. The gas sensing device with a replaceable sensor element carrier as described in claim 9, wherein the transmission unit is a wireless transmission control interface or a wired transmission control interface, and the storage unit is set on a cloud, the transmission The unit further has a Secure Digital (SD) card. A sensing method for a gas sensing device, comprising the following steps: A carrier, a plurality of sensor elements, a circuit substrate body, a gas bearing chamber and a storage unit are provided, the carrier has a circuit layout and a judgment unit, and the judgment unit is connected to the circuit layout by telecommunication, the circuit The substrate body has a signal connection unit, a transmission unit and several power supply and signal processing units, some of the power supply and signal processing units are respectively connected to the signal connection unit by telecommunication, and the transmission unit is respectively connected to some of the power supply and signal processing units telecommunications connection; Selecting at least one sensor element connected to the other side of the carrier having the circuit layout, the sensor element being in telecommunication connection with the circuit layout; Registering a registration message in the interpretation unit, the registration message is the sensor element information connected to the carrier; The carrier has one side of the sensor element connected to the gas bearing cavity, and one side of the circuit layout connected to the circuit substrate body, and the judgment unit is connected to the communication unit by telecommunication; The gas bearing cavity is positioned on a gas channel, so that the gas to be measured enters the gas bearing cavity; Create a feature database and store it in the storage unit; Simultaneously actuate all the sensor elements on the carrier to sense the gas to be tested, and compare whether the composition of the gas to be measured contains a specific gas feature in the feature database.

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