TWI775361B - 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, and more particularly, to a gas sensing device and a sensing method for adjusting a replaceable sensor element carrier of various sensor elements in response to various environments.

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

The current gas sensing device design is generally based on the customized design of the algorithm and the sensing chip for the gas to be detected. The designed device or algorithm can only detect a specific gas. 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. At the same time for the lack of detection of a variety of gases.

Furthermore, in the real environment, the gas does not simply exist alone, but exists in a mixture with other gases. Therefore, if you want to monitor and monitor mixed gases, metal oxide semiconductors and Electrochemical sensor. Because these two sensors not only have great advantages over the above-mentioned specific gas sensing devices in terms of volume, price and use environment constraints, but also have comparative advantages. Low precision and lack of specificity. The above-mentioned specificity refers to whether the gas sensing device only responds to a specific gas, and the poor specificity will make it difficult to confirm which gas is caused by the reaction measured by a single sensing device in practical application.

In view of the shortcomings, the creator of this case tried his best to research and invent, and finally developed a gas sensing device with a 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 kind of gas at a time. At the same time, it also improves the accuracy and specificity of the two gas sensing devices currently used, metal oxide semiconductor and electrochemical sensor.

The purpose of the present invention is to provide a gas sensing device with replaceable sensor element carrier and a sensing method thereof. By connecting the sensor element carriers carrying various different sensor elements on the same circuit substrate, The circuit substrate body can determine the connected sensor elements, so as to achieve the effect of adjusting and connecting various sensor elements according to various environments.

The purpose of the present invention is to provide a gas sensing device with a replaceable sensor element carrier and a sensing method thereof. By avoiding the direct contact of the circuit layout with the gas to be measured, the separation of analog signals and digital signals can be improved. Speed calculation mixes the functions of multiple gas detection and monitoring.

The purpose of the present invention is to provide a gas sensing device with a replaceable sensor element carrier and a sensing method thereof. By adding a gas bearing cavity outside the gas flow channel to be measured, an active air intake form of the closed cavity is formed. , in order to achieve a gas sensing environment that maintains a stable airflow velocity and avoids the effect of being affected by diffusion and turbulence.

In order to achieve the above object, the present invention provides a gas sensing device with replaceable sensor element carriers, which is adjacent to a gas flow channel and includes a plurality of sensor element carriers and a circuit substrate body. Each sensor element carrier has at least one sensor element and an interpretation sheet on one side element, and the other side of the sensor element carrier has a circuit layout, and the sensor element is telecommunicationly connected with the judgment unit by the circuit layout. The gas is sensed with the sensor element by one of several sensor element carriers abutting on the gas flow channel.

The circuit substrate body is separated from the sensor element carrier by a distance, and is connected with one of the sensor element carriers by a plurality of assemblies. The circuit substrate body has a communication unit and a plurality of power supplies and signals A processing unit, a plurality of the power supply and signal processing units are respectively connected with the communication unit by telecommunication. Wherein, the communication unit is coupled to the communication unit, so that the communication unit judges the sensor element used for sensing the gas, and the communication unit operates the corresponding power supply and signal processing unit to interpret the sensed The gas is measured 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-carrying cavity has an intake pipe opening and an exhaust pipe port, the intake pipe port and the exhaust pipe port are separated by a height, and the exhaust pipe port is adjacent to the sensor element carrier; the The gas flow channel enters the gas carrying cavity through the inlet pipe opening. The gas-carrying cavity further has an air-diffusing part, and the air-diffusing part is located at a position corresponding to the air intake pipe opening and is spaced apart from the air intake pipe opening. Wherein, when the gas enters the gas carrying cavity through the air inlet pipe, the gas will be blocked by the gas blocking member, and the gas will be diffused into the gas carrying cavity along the outer edge of the gas blocking member. The air baffle is an arc-shaped surface corresponding to the air inlet pipe opening, and the thickness of the central position of the air baffle is smaller than the thickness of the two sides.

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

In a preferred embodiment of the present invention, the circuit substrate body further has a transmission unit, the transmission unit is telecommunicationly connected with a plurality of the power supply and signal processing units respectively, and 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 arranged on a cloud. 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, comprising the following steps:

Step (a): providing a sensor element carrier, a plurality of sensor elements, a circuit substrate body, a gas-carrying cavity and a storage unit, the sensor element carrier having a circuit layout and an interpretation unit, And the interpretation unit is telecommunicationly connected with the circuit layout, 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 telecommunicationly connected with the communication unit, The transmission unit is telecommunicationly connected with a plurality of the power supply and signal processing units, respectively.

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

Step (c): registering a posting message in the interpreting unit, and the posting message is the information of the sensor element connected to the sensor element carrier.

Step (d): the sensor element carrier has one side of the sensor element connected to the gas-carrying cavity, and one side with the circuit layout connected to the circuit substrate body, and the interpretation unit and the communication unit Telecommunications connection.

Step (e): the gas-carrying cavity is positioned on a gas flow channel, so that the gas to be tested enters the gas-carrying cavity.

Step (f): establishing a feature database and storing it in the storage unit.

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

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 firmware

133: Intake port

134: exhaust pipe port

135: Air diffuser

2: Gas flow channel

3: storage unit

h: height

d: distance

s: spacing

t1: Thickness at the center position

t2: Thickness of both sides

91~97: Steps

FIG. 1 is a schematic three-dimensional combined schematic diagram of a preferred embodiment of a gas sensing device with a replaceable sensor element carrier of the present invention.

FIG. 2 is an exploded schematic diagram of the three-dimensional structure of a preferred embodiment of a gas sensing device with a replaceable sensor element carrier according to the present invention.

FIG. 3 is a schematic side sectional structure diagram of a preferred embodiment of the gas bearing cavity of the present invention.

FIG. 4 is a schematic top view sectional structure diagram of a preferred embodiment of the gas bearing cavity of the present invention.

FIG. 5 is a schematic top-view block diagram of a preferred embodiment of the circuit substrate body of the present invention.

FIG. 6 is a schematic top view of the first preferred embodiment of the sensor element carrier of the present invention.

FIG. 7 is a schematic top view of the structure of the sensor element carrier according to the second preferred embodiment of the present invention.

FIG. 8 is a schematic top view of the structure of the sensor element carrier according to the third preferred embodiment of the present invention.

FIG. 9 is a schematic block diagram of a flow chart of a preferred embodiment of the sensing method of the gas sensing device of the present invention.

In order to enable your examiners to have a further understanding and understanding of the features of the present invention and the effects achieved, a preferred embodiment and a detailed description are provided. As shown, it is a schematic diagram of the three-dimensional structure combination and decomposition of a preferred embodiment of a gas sensing device with a replaceable sensor element carrier of the present invention. The gas sensing device 1 for replacing the 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 carriers of the present invention includes a plurality of sensor element carriers 11 , a circuit substrate body 12 and a gas bearing cavity 13 .

Please refer to FIG. 6 to FIG. 8 , which are schematic top-view structural diagrams of several preferred embodiments of the sensor element carrier of the present invention. One side of the sensor element carriers 11, 11a, 11b has at least one sensor element 111, 111a, 111b and a reading unit 112, 112a, 112b, and the other side of the sensor element carriers 11, 11a, 11b There is a circuit layout (not shown in the figure), and the sensor elements 111, 111a, 111b are telecommunicationly connected with the judgment units 112, 112a, 112b by the circuit layout. In short, the interpretation unit 112, 112a, 112b is an ID of the sensor element carrier 11, 11a, 11b, recording the various sensors arranged on the sensor element carrier 11, 11a, 11b Elements 111, 111a, 111b. Since the gases that can be sensed by the various sensor elements 111 , 111 a and 111 b are different, and the data for sensing a gas group (Set) includes a combination of multiple gases, not the information of a single gas. Therefore, in the present invention, one of the corresponding sensor element carriers 11 , 11 a , 11 b is matched with one of the corresponding sensor element carriers 11 , 11 a , 11 b to abut on the gas flow channel 2 by the state of the gas to be measured, so that the sensor element 111 , 111a, 111b sense the gas, and the sensor elements 111, 111a, 111b can sense a combination of various gases. And because the circuit layout (not shown in the figure) is arranged on the other side of the sensor element carriers 11, 11a, 11b, the gas on the gas flow channel 2 will not cause the gas on the gas flow channel 2 to erode or damage the circuit layout, not only increasing the sensing The longevity of the device carriers 11, 11a, 11b, and the separation of analog signals and digital signals improves the efficiency of processing high-speed calculation and mixing of multiple gas detection and monitoring.

Please refer to FIG. 3 to FIG. 4 , which are schematic diagrams of a side cross-sectional structure and a top cross-sectional view of a preferred embodiment of the gas bearing cavity 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 carrier cavity 13 to one side of the sensor element carrier 11, And the gas flow channel 2 is located in it. The gas-carrying cavity 13 further has a side plate 131 , and the side plate 131 extends around the outer edge of the gas-carrying cavity 13 and abuts against the sensor element carrier 11 . The air-carrying cavity 13 further has a plurality of locking members 132 . The locking members 132 are located on the side plate 131 to connect the gas-carrying cavity 13 with the sensor element carrier 11 . The gas bearing cavity 13 of the present invention has an intake pipe port 133 and an exhaust pipe port 134, the intake pipe port 133 and the exhaust pipe port 134 is separated by a height h, and the exhaust pipe port 134 is adjacent to the sensor element carrier 11 ; the gas flow channel 2 enters the gas carrier cavity 13 with the intake pipe port 133 . In a preferred embodiment of the present invention, the gas-carrying cavity 13 further has a dispersing element 135 , and the dispersing element 135 is located at a position corresponding to the air inlet pipe opening 133 and is spaced apart from the air inlet pipe opening 133 . s, the air blocking member 135 is an arc-shaped curved surface corresponding to the air inlet pipe opening 133, and the thickness t1 of the central position of the air blocking member is smaller than the thickness t2 of the two sides. Wherein, when the gas enters the gas carrying cavity 13 through the air inlet pipe port 133 , the gas will be blocked by the gas blocking member 135 , and the gas will be diffused to the gas along the outer edge of the gas blocking member 135 . In the carrier cavity 13 , the gas flow channels 2 can be evenly distributed in the gas carrier cavity 13 , so that the data of the gas group (Set) can be sensed more accurately. Therefore, the gas-carrying cavity 13 is used to form an active air intake form of the closed cavity, so as to achieve a gas sensing environment that maintains a stable airflow velocity and avoids the effects of diffusion and turbulence.

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 with one of the sensor element carriers 11 by a plurality of assembly parts 14, and the assembly part 14 is a bolt. The circuit substrate 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 respectively connected to the communication circuit unit 121 by telecommunication. Wherein, the judging unit 112 is coupled to the communication unit 121, so that the communication unit 121 determines that the sensor element carrier 11 is the sensor element 111 used for sensing the gas, and then uses the connection The interface circuit in the information unit 121 operates the corresponding power supply and signal processing unit 122 to interpret the sensed gas to generate a gas data.

The circuit substrate body further has a transmission unit 123, the transmission unit 123 is telecommunicationly connected with a plurality of the power supply and signal processing units 122 respectively, 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 added gas data. In the preferred embodiment of the present invention, the single sensor element 111 is first used to detect the Whether there is a target object to be detected in the gas composition is first transmitted to the storage unit 3, so that the storage unit 3 establishes a feature database of several target gases; therefore, when sensing the gas to be detected, it will compare all To determine whether the gas composition contains a specific gas characteristic in the database, the accuracy of the sensing and the advantages of better specificity can be increased.

Please refer to FIG. 9 , which is a block schematic diagram of a preferred embodiment of the sensing method of the gas sensing device of the present invention. Step 91: Provide a sensor element carrier, a plurality of sensor elements, a circuit substrate body, a gas-carrying cavity and a storage unit, the sensor element carrier has a circuit layout and an interpretation unit, and the The interpretation unit is telecommunicationly connected with the circuit layout. The circuit substrate body has a communication unit, a transmission unit, and a plurality of power supply and signal processing units. A plurality of the power supply and signal processing units are respectively telecommunicationly connected to the communication unit. The units are respectively telecommunicationly connected with a number of the power supply and signal processing units.

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

Step 93: Register a posting message in the interpreting unit, and the posting message is the information of the sensor element connected to the sensor element carrier.

Step 94 : The sensor element carrier has one side of the sensor element connected to the gas-carrying cavity, and one side with the circuit layout is connected to the circuit substrate, and the interpretation unit is telecommunicationly connected to the communication unit .

Step 95: The gas bearing cavity is located on a gas flow channel, so that the gas to be tested enters the gas bearing cavity.

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

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

Through the above detailed description, it can be fully demonstrated that the purpose and effect of the present invention are progressive in implementation, have great industrial utilization value, and fully meet the requirements of an invention patent. Only the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the embodiments and protection scope of the present invention. Those skilled in the art should be able to realize that any modifications made by using the descriptions and illustrations of the present invention Solutions obtained from equivalent substitutions 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: Sensor element carrier

111: Sensor element

112: 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 firmware

133: Intake port

134: exhaust pipe port

2: Gas flow channel

3: storage unit

Claims (11)

A gas sensing device with replaceable sensor element carriers, which is adjacent to a gas flow channel, comprises: a plurality of sensor element carriers, each sensor element carrier has at least one sensor element on one side; an interpretation unit, and the other side of the sensor element carrier has a circuit layout, the sensor element is telecommunicationly connected with the interpretation unit by the circuit layout; wherein, one of the several sensor element carriers is adjacent to each other Relying on the gas flow channel, the sensor element is used to sense the gas; a circuit substrate body is separated from the sensor element carrier by a distance, and a plurality of assemblies are used with one of the sensor elements. The carrier is connected, the circuit substrate body has a communication 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 with the communication unit in telecommunication; wherein, the interpretation unit is used to couple the communication The communication unit determines the sensor element used for sensing the gas, and the communication unit activates 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 claimed in claim 1, wherein the gas sensing device further comprises a gas bearing cavity connected to one side of the sensor element carrier , and the gas flow channel is located in it. The gas sensing device with a replaceable sensor element carrier as claimed in claim 2, wherein the gas-carrying cavity has an inlet pipe port and an exhaust pipe port, the inlet pipe port 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 bearing cavity with the intake pipe port. The gas sensing device with a replaceable sensor element carrier according to claim 3, wherein the gas bearing cavity further has a gas diffuser, and the gas diffuser is located at a position corresponding to the air inlet pipe opening, and There is a distance from the air inlet pipe opening; wherein, when the gas enters the gas support through the air inlet pipe mouth When carrying the cavity, the gas is blocked by the gas blocking member, and the gas is diffused into the gas carrying cavity along the outer edge of the gas blocking member. The gas sensing device with a replaceable sensor element carrier according to claim 4, wherein the air diffusing member is an arc-shaped curved surface corresponding to the intake pipe opening, and the thickness ratio of the central position of the air diffusing member is higher than that of the air diffusing member. The thickness of the two sides is small. The gas sensing device with a replaceable sensor element carrier as claimed in claim 2, wherein the gas bearing cavity further has a side plate, the side plate extends out around the outer edge of the gas bearing cavity and abuts against the sensing device element carrier. The gas sensing device for replacing the sensor element carrier as claimed in claim 6, wherein the gas bearing cavity further has a plurality of locking members, the locking members are located on the side plate, so that the gas bearing cavity and the The sensor element carriers are 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 claimed in claim 1, wherein the circuit substrate body further has a transmission unit, the transmission unit is telecommunicationly connected to a plurality of the power supply and signal processing units respectively, and connects the The gas data is transferred to a storage unit. The gas sensing device with replaceable sensor element carrier according to 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, and the transmission unit is The unit also has a Secure Digital (SD) card. A sensing method of a gas sensing device, comprising the following steps: providing a sensor element carrier, a plurality of sensor elements, a circuit substrate body, a gas bearing cavity and a storage unit, the sensor element The carrier has a circuit layout and an interpreting unit, and the interpreting unit is telecommunicationly connected to the circuit layout. The circuit substrate body has a communication unit, a transmission unit, and a plurality of power supply and signal processing units. The signal processing unit is respectively connected with the communication unit, the transmission unit is connected with a plurality of the power supply and the signal processing unit respectively; at least one sensor element is selected to be connected to the other sensor element carrier having the circuit layout On the side, the sensor element is telecommunicationly connected to the circuit layout; a posting message is registered in the interpretation unit, and the posting message is the sensor element information to which the sensor element carrier is connected; the sensor element carrier A side with the sensor element is connected to the gas-bearing cavity, and a side with the circuit layout is connected to the circuit substrate, and the interpretation unit is telecommunicationly connected to the communication unit; the gas-bearing cavity is located in a On the gas flow channel, the gas to be tested enters the gas bearing cavity; a feature database is established and stored in the storage unit; at the same time, all the sensor elements on the sensor element carrier are activated to sense the gas to be tested, Compare whether the gas composition to be measured contains a specific gas characteristic in the characteristic database.

Images