A damper with an opening degree sensing system and an opening degree detection method thereof

Abstract

The present application relates to a kind of wind valve with opening degree sensing system and its opening degree detection method, the opening degree sensing system includes: several RFID chips, the RFID chip is fixedly arranged on the mounting plate, the RFID chip equiangular arc array distribution is on the switch path that the handle sweeps from the closed state to the fully open state;Several connecting lines, the connecting line is fixedly arranged on the upper surface of the mounting plate;An RFID antenna is arranged in the handle;Electric connector, the RFID chip below the handle is electrically connected with the RFID antenna and is connected to form an RFID tag;RFID reader, periodically radiate carrier wave outward, read the information returned by the RFID tag formed by the RFID chip below the handle and the RFID antenna electrically connected.

Description

Technical Field

[0001] This invention relates to the field of air valves, specifically to an air valve with an opening degree sensing system and a method for detecting its opening degree. Background Technology

[0002] Existing dampers control the airflow by rotating the valve core via a handle or other mechanism, which in turn controls the opening of the damper. Currently, the most commonly used dampers in engineering are double-leaf regulating valves or baffle valves (such as...). Figure 1 As shown in the figure, its function is to manually adjust and distribute the air volume of the branch pipes of the duct system. The system air volume distribution requirements can be met by adjustment, and its application is relatively simple.

[0003] Existing air conditioning and heat exchange systems achieve energy savings by controlling the output of cool / hot air based on the opening degree of air valves. To sense the valve opening, current technologies require either an internal wind speed sensor to obtain the gas flow rate or an opening sensor on the valve seat to determine the valve's opening degree. Both of these sensors require communication systems for data transmission and power supplies. However, in some air conditioning applications, the output air may be at extremely high or low temperatures, making it difficult for the power supply system to operate normally under these conditions. Furthermore, the compact structure of the air valves makes it challenging to incorporate wind speed or opening sensors.

[0004] The purpose of this invention is to design a damper with an opening degree sensing system and a method for detecting its opening degree, in order to address the problems existing in the prior art. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides a damper with an opening degree sensing system and an opening degree detection method thereof, which can effectively solve at least one of the problems existing in the prior art.

[0006] The technical solution of this invention is: A damper with an opening sensing system includes a valve seat, a rotatable valve leaf inside the valve seat, a valve body outside the valve seat, and a fixed mounting plate on the valve body. The mounting plate is provided with a fixed shaft connected to the valve leaf, and a handle is sleeved on the fixed shaft. The handle is used to drive the valve leaf to rotate, thereby controlling the opening of the damper. When the handle is rotated, it sweeps horizontally above the mounting plate. The opening sensing system includes: Several RFID chips are fixedly mounted on the mounting plate. The RFID chips are distributed in an arc array with equal angular intervals on the switch path swept by the handle as the valve leaf moves from the closed state to the fully open state. A number of connecting lines, the same number as the number of RFID chips, are fixedly disposed on the upper surface of the mounting plate, and each RFID chip's radio frequency terminal is electrically connected to the connecting line. An RFID antenna is disposed on the handle, and the RFID antenna rotates with the handle; An electrical connector is disposed on the lower end face of the handle. The electrical connector is connected to the RFID antenna and is disposed above the arc where the RFID chip array is distributed. When the handle sweeps over the corresponding RFID chip, the electrical connector can electrically connect the corresponding connection line of the RFID chip below the handle, thereby electrically connecting the RFID chip below the handle with the RFID antenna to form an RFID tag. The RFID reader periodically radiates a carrier wave to read information returned by the RFID tag, which is composed of an RFID chip and an RFID antenna electrically connected below the handle.

[0007] Furthermore, the RFID chip is a passive RFID chip.

[0008] Furthermore, the RFID antenna includes a first RFID antenna and a second RFID antenna, the first RFID antenna and the second RFID antenna having the same shape; The connecting line includes a first connecting line and a second connecting line, which are respectively connected to two radio frequency ports of the RFID chip.

[0009] Furthermore, the first connecting line is disposed on the arc on which the RFID chip array is distributed, and a plurality of the first connecting lines form a discontinuous line corresponding to the arc on which the RFID chip array is distributed. The second connecting line is disposed on the outer or inner circle of the arc of the RFID chip array, and a plurality of the second connecting lines form a discontinuous line corresponding to the outer or inner circle of the arc of the RFID chip array.

[0010] Furthermore, the electrical connector includes a first electrical connector and a second electrical connector, which are respectively connected to the first RFID antenna and the second RFID antenna. The first electrical connector and the second electrical connector are at different distances from the fixed shaft. The first electrical connector and the second electrical connector are spaced apart by a first angle. The ends of the first connecting line and the second connecting line are spaced apart by a first angle, so that the first electrical connector and the second electrical connector can simultaneously connect or disconnect the first connecting line and the second connecting line corresponding to the same RFID chip.

[0011] Furthermore, the angle covered by the first connecting line is the same as the angle covered by the second connecting line.

[0012] Furthermore, the electrical connector is an electric brush, and the connecting line protrudes from the upper surface of the mounting plate. The electric brush is used to sweep along with the handle and maintain the corresponding connecting line electrically connected to the RFID antenna.

[0013] Optionally, a method for detecting the opening degree of a damper with an opening degree sensing system, based on the aforementioned damper with an opening degree sensing system, includes the following steps: Each RFID chip has pre-stored identification data. The position of each RFID chip on the mounting plate is tested to correspond to the opening degree of the valve leaf, and the association between different identification data and opening degree is established. When the RFID reader reads the information returned by the RFID tag consisting of the RFID chip and the RFID antenna electrically connected below the handle, it extracts the corresponding identification data from the returned information, matches the corresponding identification data with the opening degree according to the correlation between the identification data and the opening degree, and obtains the opening degree of the air valve.

[0014] Further, the corresponding identification data is extracted from the returned information, and the opening degree corresponding to the identification data is matched according to the correlation between the identification data and the opening degree to obtain the opening degree of the damper, including: If two different identification data are extracted from the returned information, the two openings corresponding to the two identification data are matched according to the association between the two identification data and the opening, and the middle value of the two openings is taken as the opening of the air valve.

[0015] Optionally, a method for detecting the opening degree of a damper with an opening degree sensing system, based on the aforementioned damper with an opening degree sensing system, includes the following steps: Test the opening degree of the valve leaf corresponding to the position of each RFID chip on the mounting plate, and write the corresponding opening degree into the corresponding RFID chip; When the RFID reader reads the information returned by the RFID tag consisting of the RFID chip and the RFID antenna electrically connected below the handle, it extracts the corresponding opening degree from the returned information to obtain the opening degree of the air valve.

[0016] Therefore, the present invention provides the following effects and / or advantages: The electrical connector in this application serves as a connector between the RFID chip and the connecting line. On one hand, the electrical connector rotates with the handle; that is, the position of the electrical connector corresponds to the angle at which the valve leaf opens when the handle is turned. On the other hand, the electrical connector connects the RFID chip below the handle to the connecting line, thereby connecting the RFID antenna and the RFID chip to form an RFID tag. RFID chips outside the handle area are not connected to the RFID antenna and therefore cannot function. At this time, the position of the RFID chip below the handle indicates the valve leaf opening. Using the RFID tag formed by the RFID chip and RFID antenna, a reader can read the information returned by the RFID tag to determine the position of the handle on the mounting panel, thus deducing the valve leaf opening.

[0017] The connecting lines in this application form discontinuous lines corresponding to the arcs. This discontinuous connecting line configuration ensures that the handle can be connected to the RFID chip in each area, and transforms the "continuous" opening of the arcs into "discrete" openings, facilitating sampling and reading.

[0018] This application eliminates the need to add various sensors to existing air valves, and therefore eliminates the need to add corresponding support devices such as data transmission and power supply to various sensors. It only requires an RFID chip and RFID antenna, as well as the connectors provided in this application, to easily sense the opening degree of the air valve by observing the positions of the RFID chip and RFID antenna and the connectors at various locations on the air valve and the connection relationships between them.

[0019] It should be understood that the above summary and the following detailed description of the invention are exemplary and explanatory, and are intended to provide further explanation of the invention as claimed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an existing air valve.

[0021] Figure 2 This is a schematic diagram of an embodiment of the present invention.

[0022] Figure 3 for Figure 1 Side view.

[0023] Figure 4 This is a structural diagram of an RFID antenna and connector.

[0024] Figure 5 This is a schematic diagram of the connecting line structure.

[0025] Figure 6 A schematic diagram showing the arc formed by connecting lines.

[0026] Explanation of reference numerals in the attached drawings: Valve seat 101, Valve leaf 102, Mounting plate 103, Fixed shaft 104, Handle 105, RFID chip 2, Connecting wire 3, First connecting wire 301, Second connecting wire 302, RFID antenna 4, First RFID antenna 401, Second RFID antenna 402, Electrical connector 5, First electrical connector 501, Second electrical connector 502. Detailed Implementation

[0027] To facilitate understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings: refer to Figure 2-6 A damper with an opening degree sensing system includes a valve seat 101, a rotatable valve leaf 102 disposed inside the valve seat 101, a valve body disposed outside the valve seat, and a fixed mounting plate 103 disposed on the mounting plate 103. A fixed shaft 104 connected to the valve leaf 102 is provided on the fixed shaft 104. A handle 105 is sleeved on the fixed shaft 104. The handle 105 is used to drive the valve leaf 102 to rotate, thereby controlling the opening degree of the damper. When the handle 105 rotates, it sweeps horizontally above the mounting plate 103. In this embodiment, the structure and working principle of the air valve are existing technologies. By rotating the valve leaf 102 with the handle 105, the opening degree of the valve leaf 102 inside the valve seat 101 is controlled. The larger the opening degree, the easier it is for gas to pass through the valve seat 101.

[0028] The opening sensing system includes: Several RFID chips 2 are fixedly mounted on the mounting plate 103. The RFID chips 2 are distributed in an arc array with equal angular intervals on the switch path swept by the handle 105 as the valve leaf 102 moves from the closed state to the fully open state. In this embodiment, the area swept by the handle 105 is a fan-shaped area centered on the fixed axis 104. Therefore, the path swept by the handle 105 is an arc-shaped area centered on the fixed axis 104. This arc is the path swept by the handle 105 as it moves the valve leaf 102 from the closed state to the fully open state. The RFID chip 2 is distributed along this path, which allows for complete detection of the multiple states of the valve leaf 102 from the closed state to the fully open state. Furthermore, the handle 105 must pass through this path during rotation, facilitating the coordination of subsequent structures.

[0029] RFID chip 2 refers to the part of the RFID tag excluding the part connected to the RFID antenna 4. It can also be called an RFID chip, which stores certain data.

[0030] A number of connecting lines 3, the same number as the number of RFID chips 2, are fixedly disposed on the upper surface of the mounting plate 103, and each RFID chip 2 is electrically connected to the connecting line 3 at its radio frequency terminal. In this embodiment, the connecting line 3 leads out the radio frequency terminal of each RFID chip 2.

[0031] An RFID antenna 4 is disposed on the handle 105, and the RFID antenna 4 rotates with the handle; In this embodiment, the structure and working principle of the RFID chip 2 and RFID antenna 4 are existing technologies. The principle is that the RFID antenna 4 couples with a carrier wave emitted by an external card reader, thereby providing power to the RFID chip 2. Driven by this power, the RFID chip 2 emits the data stored within it. This data is transmitted through the RFID antenna 4 and read by the external card reader, thus obtaining the data stored in the RFID chip. In other words, if the radio frequency band of the RFID chip 2 is not electrically connected to the RFID antenna 4, the RFID chip 2 cannot obtain external power and therefore cannot function.

[0032] An electrical connector 5 is disposed on the lower end face of the handle 105. The electrical connector 5 is connected to the RFID antenna 4. The electrical connector 5 is disposed above the arc where the RFID chip 2 array is distributed. When the handle 105 sweeps over the corresponding RFID chip 2, the electrical connector 5 can electrically connect the corresponding connecting line 3 of the RFID chip 2 below the handle 105, thereby electrically connecting the RFID chip 2 below the handle 105 with the RFID antenna 4 to form an RFID tag. In this embodiment, the electrical connector 5 serves as a connector between the RFID chip 2 and the connecting line 3. On one hand, the electrical connector 5 rotates with the handle 105, meaning its position corresponds to the angle at which the handle 105 rotates to open the valve leaf 102. On the other hand, the electrical connector 5 connects the RFID chip 2 below the handle 105 to the connecting line 3, thus connecting the RFID antenna 4 and the RFID chip 2 to form an RFID tag. RFID chips 2 located outside the handle 105 are not connected to the RFID antenna 4 and therefore cannot function. At this time, the position of the RFID chip 2 below the handle 105 indicates the opening degree of the valve leaf 102. Using the RFID tag formed by the RFID chip 2 and the RFID antenna 4, the information returned by the RFID tag can be read by a reader. This information reveals the position of the handle 105 on the mounting plate 103, thus allowing the deduction of the valve leaf 102's opening degree.

[0033] An RFID reader (not shown) periodically radiates a carrier wave to read information returned by an RFID tag consisting of an RFID chip 2 and an RFID antenna 4 electrically connected below the handle 105.

[0034] The working principle of the RFID reader is based on existing technology. In this embodiment, the RFID reader is installed outside the air valve, such as on an indoor wall. The RFID reader is a long-range reader, with a distance of more than 5 meters from the air valve. During operation, the RFID reader does not need to move with any structure of the air valve, and therefore there is no need to introduce power lines, communication lines, etc. at the air valve for the RFID reader to work.

[0035] Furthermore, the RFID chip 2 is a passive RFID chip.

[0036] In this embodiment, the passive RFID chip does not require an external power supply. It can start working by being driven by the carrier wave emitted by the RFID reader and in conjunction with the RFID antenna 4, thus avoiding the technical problem of the air valve being difficult to install a power supply.

[0037] Further, refer to Figure 4 The RFID antenna 4 includes a first RFID antenna 401 and a second RFID antenna 402, and the first RFID antenna 401 and the second RFID antenna 402 have the same shape. refer to Figure 5 The connecting line 3 includes a first connecting line 301 and a second connecting line 302, which are respectively connected to two radio frequency ports of the RFID chip 2.

[0038] This embodiment uses a symmetrical antenna, which has two antennas.

[0039] Furthermore, the first connecting line 301 is disposed on the arc of the RFID chip 2 array, and a plurality of the first connecting lines 301 form a discontinuous line corresponding to the arc of the RFID chip 2 array. The second connecting line 302 is disposed on the outer or inner circle of the arc of the RFID chip 2 array, and a plurality of the second connecting lines 302 form a discontinuous line corresponding to the outer or inner circle of the arc of the RFID chip 2 array.

[0040] refer to Figure 6The corresponding discontinuous lines form a corresponding arc in the form of dashed lines. The arc, that is, the path swept by the handle 105, can be divided into multiple regions, each region corresponding to one line in the discontinuous lines. The advantages of this method are twofold: firstly, by distinguishing the path swept by the handle 105, only a few RFID chips 2 are needed to achieve reading along the entire path; secondly, this allows connection to the corresponding RFID chip 2 in each region. Without extended connecting lines, due to the very narrow radio frequency end of the RFID chip 2, the handle cannot connect the RFID antenna 4 to the RFID chip 2 in areas where no RFID chip 2 is installed, and the opening cannot be read in those areas. Furthermore, the discontinuous line arrangement, with gaps between adjacent connecting lines 3, prevents the electrical connector 5 from simultaneously connecting to both the current RFID chip 2 and the corresponding RFID chip 2 when the handle 105 sweeps over a certain point, thus preventing data misreading.

[0041] Further, refer to Figure 4 The electrical connector 5 includes a first electrical connector 501 and a second electrical connector 502. The first electrical connector 501 and the second electrical connector 502 are respectively connected to the first RFID antenna 401 and the second RFID antenna 402. The first electrical connector 501 and the second electrical connector 502 are at different distances from the fixed shaft 104. The first electrical connector 501 and the second electrical connector 502 are spaced apart by a first angle. The ends of the first connecting line 301 and the second connecting line 302 are spaced apart by a first angle, so that the first electrical connector 501 and the second electrical connector 502 can be simultaneously connected to or disconnected from the first connecting line 301 and the second connecting line 302 corresponding to the same RFID chip 2.

[0042] In this embodiment, reference Figure 4-5 The ends of the first connecting line 301 and the second connecting line 302 are spaced apart by a first angle B. The first electrical connector 501 and the second electrical connector 502 are spaced apart by a first angle B. By setting the same first angle B, it can be ensured that the two electrical connectors can simultaneously contact or disconnect from the two connecting lines of the current chip, thus ensuring that the RFID chip 2 and the RFID antenna 4 can form an RFID tag.

[0043] Furthermore, the angle covered by the first connecting line 301 is the same as the angle covered by the second connecting line 302.

[0044] refer to Figure 5The angles covered by the two connecting lines are both A. In this case, when the handle 105 is rotated, it can be ensured that the two connecting lines are contacted by the connector 5 for the same amount of time. It can also be ensured that the two connecting lines are contacted or disconnected by the connector 5 at the same time, preventing the first electrical connector 501 from being connected to the current RFID chip 2 while the second connector 502 is connected to another RFID chip 2.

[0045] Furthermore, the electrical connector 5 is an electric brush, and the connecting line 3 protrudes from the upper end surface of the mounting plate 103. The electric brush is used to sweep horizontally with the handle 105 and maintain the corresponding connecting line 3 and the RFID antenna 4 in an electrical connection.

[0046] The brush and the protruding connecting line 3 ensure that the brush can connect to the connecting line 3 below the handle whenever the handle 105 rotates, thus ensuring that the handle 105 can rotate freely.

[0047] A method for detecting the opening degree of a damper with an opening degree sensing system, based on the aforementioned damper with an opening degree sensing system, includes the following steps: Each RFID chip has pre-stored identification data. The position of each RFID chip on the mounting plate is tested to correspond to the opening degree of the valve leaf, and the association between different identification data and opening degree is established. When the RFID reader reads the information returned by the RFID tag consisting of the RFID chip and the RFID antenna electrically connected below the handle, it extracts the corresponding identification data from the returned information, matches the corresponding identification data with the opening degree according to the correlation between the identification data and the opening degree, and obtains the opening degree of the air valve.

[0048] In this embodiment, the RFID chip can be pre-stored with data such as A001, A002, and A003 as identification data, and then the RFID chip is fixedly mounted on the mounting plate. Then, the operator rotates the handle above the RFID chip storing the identification data such as A001, A002, and A003, and reads the corresponding opening degree at this time, such as 10°, 20°, and 30°. Then, the opening degree and the identification data are associated to obtain the association relationship such as A001-10°, A002-20°, and A003-30°.

[0049] Then, during subsequent use, when the handle is turned to a certain position, it is read by an RFID reader. For example, if the data returned by the RFID tag read at the current position contains the A002 identifier data, the data such as 20° can be obtained by matching the correlation relationship. Then 20° is the current opening degree of the air valve.

[0050] Further, the corresponding identification data is extracted from the returned information, and the opening degree corresponding to the identification data is matched according to the correlation between the identification data and the opening degree to obtain the opening degree of the damper, including: If two different identification data are extracted from the returned information, the two openings corresponding to the two identification data are matched according to the association between the two identification data and the opening, and the middle value of the two openings is taken as the opening of the air valve.

[0051] In this step, an electrical connector may be connected to the connection lines of two different RFID chips at the same time. In this case, the midpoint of the opening degree of the two RFID chips can be used. For example, by matching the correlation, data such as 20° and 30° can be obtained. Then, the midpoint of 20° and 30°, 25°, can be used as the opening degree of the air valve.

[0052] Example 2 A method for detecting the opening degree of a damper with an opening degree sensing system, based on the aforementioned damper with an opening degree sensing system, includes the following steps: Test the opening degree of the valve leaf corresponding to the position of each RFID chip on the mounting plate, and write the corresponding opening degree into the corresponding RFID chip; When the RFID reader reads the information returned by the RFID tag consisting of the RFID chip and the RFID antenna electrically connected below the handle, it extracts the corresponding opening degree from the returned information to obtain the opening degree of the air valve.

[0053] The difference between this embodiment and embodiment one is that in this embodiment, the opening degree corresponding to the position of the RFID chip on the mounting plate is written into the chip. For example, the RFID chips at positions with opening degrees of 10°, 20°, and 30° are written with 10°, 20°, and 30° respectively as the opening degree. Then, during subsequent use, when the handle is turned to a certain position, it is read by the RFID reader. For example, if the data returned by the RFID tag at the current position contains the data 10, then 10 is the current opening degree of the air valve.

[0054] It should be noted that any reference signs placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0055] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A damper with an opening degree sensing system, characterized in that: The air valve includes a valve seat, a rotatable valve leaf is provided inside the valve seat, a valve body is provided outside the valve seat, the valve body includes a fixed mounting plate, the mounting plate is provided with a fixed shaft connected to the valve leaf, the fixed shaft is sleeved with a handle, the handle is used to drive the valve leaf to rotate thereby controlling the opening of the air valve, and the handle sweeps horizontally above the mounting plate when it rotates. The opening sensing system includes: Several RFID chips are fixedly mounted on the mounting plate. The RFID chips are distributed in an arc array with equal angular intervals on the switch path swept by the handle as the valve leaf moves from the closed state to the fully open state. A number of connecting lines, the same number as the number of RFID chips, are fixedly disposed on the upper surface of the mounting plate, and each RFID chip's radio frequency terminal is electrically connected to the connecting line. An RFID antenna is disposed on the handle, and the RFID antenna rotates with the handle; An electrical connector is disposed on the lower end face of the handle. The electrical connector is connected to the RFID antenna and is disposed above the arc where the RFID chip array is distributed. When the handle sweeps over the corresponding RFID chip, the electrical connector can electrically connect the corresponding connection line of the RFID chip below the handle, thereby electrically connecting the RFID chip below the handle with the RFID antenna to form an RFID tag. An RFID reader periodically radiates a carrier wave to read information returned by an RFID tag consisting of an RFID chip and an RFID antenna electrically connected below the handle. The RFID antenna includes a first RFID antenna and a second RFID antenna, and the first RFID antenna and the second RFID antenna have the same shape. The connecting line includes a first connecting line and a second connecting line, and the first connecting line and the second connecting line are respectively connected to two radio frequency ports of the RFID chip; The first connecting line is disposed on the arc on which the RFID chip array is distributed, and a plurality of the first connecting lines form a discontinuous line corresponding to the arc on which the RFID chip array is distributed. The second connecting line is disposed on the outer or inner circle of the arc of the RFID chip array distribution, and a plurality of the second connecting lines form a discontinuous line corresponding to the outer or inner circle of the arc of the RFID chip array distribution. The electrical connector includes a first electrical connector and a second electrical connector. The first electrical connector and the second electrical connector are respectively connected to the first RFID antenna and the second RFID antenna. The first electrical connector and the second electrical connector are at different distances from the fixed shaft. The first electrical connector and the second electrical connector are spaced apart by a first angle. The ends of the first connecting line and the second connecting line are spaced apart by a first angle, so that the first electrical connector and the second electrical connector can simultaneously connect or disconnect the first connecting line and the second connecting line corresponding to the same RFID chip.

2. The damper with an opening degree sensing system according to claim 1, characterized in that: The RFID chip is a passive RFID chip.

3. A damper with an opening degree sensing system according to claim 1, characterized in that: The angle covered by the first connecting line is the same as the angle covered by the second connecting line.

4. A damper with an opening degree sensing system according to claim 1, characterized in that: The electrical connector is a brush, and the connecting line protrudes from the upper surface of the mounting plate. The brush is used to sweep along with the handle and maintain the corresponding connecting line electrically connected to the RFID antenna.

5. A method for detecting the opening degree of a damper with an opening degree sensing system, based on the damper with an opening degree sensing system as described in claim 1, characterized in that: Package the following steps: Each RFID chip has pre-stored identification data. The position of each RFID chip on the mounting plate is tested to correspond to the opening degree of the valve leaf, and the association between different identification data and opening degree is established. When the RFID reader reads the information returned by the RFID tag consisting of the RFID chip and the RFID antenna electrically connected below the handle, it extracts the corresponding identification data from the returned information, matches the corresponding identification data with the opening degree according to the correlation between the identification data and the opening degree, and obtains the opening degree of the air valve.

6. The method for detecting the opening degree of a damper with an opening degree sensing system according to claim 5, characterized in that: Extract the corresponding identification data from the returned information, and match the corresponding identification data with the opening degree based on the correlation between the identification data and the opening degree to obtain the opening degree of the damper, including: If two different identification data are extracted from the returned information, the two openings corresponding to the two identification data are matched according to the association between the two identification data and the opening, and the middle value of the two openings is taken as the opening of the air valve.

7. A method for detecting the opening degree of a damper with an opening degree sensing system, based on the damper with an opening degree sensing system as described in claim 1, characterized in that: Package the following steps: Test the opening degree of the valve leaf corresponding to the position of each RFID chip on the mounting plate, and write the corresponding opening degree into the corresponding RFID chip; When the RFID reader reads the information returned by the RFID tag consisting of the RFID chip and the RFID antenna electrically connected below the handle, it extracts the corresponding opening degree from the returned information to obtain the opening degree of the air valve.

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