Magnetic induction sensor based on reed switch structure

Abstract

The utility model discloses a magnetic induction sensor based on a reed switch structure, which comprises a base assembly, a first sensing assembly and a second sensing assembly which are arranged in parallel are arranged on the base assembly and comprise a first reed switch and a second reed switch, the working voltage of the first reed switch and the working voltage of the second reed switch comprise AC220V / DC110V / DC220V, and the working voltage of the first reed switch and the working voltage of the second reed switch comprise alternating current (AC) 220V, direct current (DC) 110V and direct current (DC) 220V. The rated voltage of the first reed pipe and the second reed pipe is smaller than or equal to DC1000V or AC850V, and the working current of the first reed pipe and the second reed pipe comprises 0A-1A. According to the valve position sensor based on the reed pipe structure, the automatic detection of the position state of a knife switch device is realized through the cooperative operation of the first sensing assembly and the second sensing assembly, and the automatic detection of the position state of the knife switch device is realized. Moreover, the device is simple in installation structure, can adapt to installation operation in different occasions, is compatible with knife switch structures of different specifications and models, is wide in size and angle adaptation range, and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a magnetic induction sensor based on a reed switch structure. Background Art

[0002] As described in the published patent with publication number CN205981092U, in recent years, magnetic rotation angle sensors have been widely used to detect the rotation position of an object in various applications such as detection of rotation position in mechanical equipment. As a magnetic rotation angle sensor, a sensor that has a rotating magnet and a magnetic sensor that detects the magnetic field of the magnet and detects the rotation angle of the magnet based on the detection output of the magnetic sensor.

[0003] The main components of today's rotary angle sensors are not made of materials that can effectively resist the interference of external magnetic fields on the sensors, and their ability to resist external magnetic field interference is relatively weak; and the induction of magnets and magnetic sensors mostly uses contact induction signals such as point contact and rotational contact, which will reduce the service life of the sensor after long-term use. Finally, most rotary angle sensors have certain limit or restriction structures for the rotation angle of the rotating shaft, but for some switch elements that require no angle limit and direction limit, the application of this structure to sensors has certain limitations and a small scope of use.

[0004] As described in the published patent with publication number CN216869440U, the knife switch is a manually controlled switch for electric equipment, which can form a disconnection point between the maintenance equipment and the live equipment to ensure the personal safety of the maintenance workers of the electric equipment. The neutral point grounding knife switch is widely used in the substation system. In the actual construction process, the construction workers need to accurately judge the "connected" or "disconnected" state of the switch knife to ensure safety. In order to intelligently detect the switching state of the knife switch, a magnetic induction sensor detection device came into being. However, due to the different structural forms of the grounding knife switch, especially the different dimensions of the on-site installation layout, the installation structure of the current detection component is not compatible with multiple devices and the sensing angle range is limited, resulting in problems such as high design, manufacturing, and installation costs and long production cycles.

[0005] To sum up, in the prior art, due to operational requirements, construction personnel must accurately determine the position of the switch knife switch. In order to intelligently detect the switching state of the knife switch, a detection component is generally required. However, the existing detection components have the problem of incompatibility of installation structures and limited scope of use. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A magnetic induction sensor based on a reed switch structure comprises a base assembly, to which a first sensor assembly and a second sensor assembly are connected;

[0009] The base assembly includes a base shell and a PCBA board installed in the base shell;

[0010] The first sensor assembly includes a first housing and a first reed switch disposed in the first housing;

[0011] The second sensor assembly includes a second housing and a second reed switch disposed in the second housing;

[0012] The first shell and the second shell are connected to the side of the base shell;

[0013] The first reed switch and the second reed switch are electrically connected to the PCBA board respectively.

[0014] As a further solution of the utility model: a mounting hole is opened on the side wall of the base shell, a first waterproof connector is threadedly installed in the mounting hole, a connecting wire extends from the first waterproof connector, and the first sensor component and the second sensor component are electrically connected to the first waterproof connector through the connecting wire.

[0015] As a further solution of the utility model: the rear ends of the first shell and the second shell are respectively equipped with second waterproof connectors, and the connecting wires extend into the second waterproof connectors for airtight connection.

[0016] As a further solution of the utility model: the working voltage of the first reed switch and the second reed switch includes AC220V / DC110V / DC220V.

[0017] As a further solution of the utility model: the rated voltage of the first reed switch and the second reed switch is less than or equal to DC1000V or AC850V.

[0018] As a further solution of the utility model: the working current of the first reed switch and the second reed switch includes 0A~1A.

[0019] As a further solution of the utility model: the first reed switch and the second reed switch are respectively sleeved with an insulating protection shell, and the insulating protection shell is respectively fixed in the first shell and the second shell by insulating glue.

[0020] As a further solution of the utility model: a signal interface electrically connected to the PCBA board is also fixedly mounted on the base shell.

[0021] As a further solution of the utility model: a corrugated tube is sleeved on the external circuit structure connected to the base shell.

[0022] As a further solution of the utility model: a mounting clip is mounted on the first shell, a positioning hole is opened on the mounting clip and runs through it from top to bottom. The positioning hole is arranged in an arc shape along the periphery of the mounting clip, and a fixing hole is also opened on the mounting clip and runs through the side wall.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] The utility model is based on a valve position sensor of a reed switch structure, which realizes automatic detection of the position state of a knife gate device through the cooperation of a first sensor component and a second sensor component. The installation structure is simple, and can be adapted to installation operations in different occasions. The utility model is compatible with knife gate structures of different specifications and models, and the device has a wide range of sizes and angles, and a wide range of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural stereogram of the utility model;

[0026] Figure 2 It is a structural stereogram of the base assembly in the utility model;

[0027] Figure 3 yes Figure 2 The cross-sectional view along the AA direction;

[0028] Figure 4 It is a structural exploded diagram of the base assembly in the utility model;

[0029] Figure 5 It is a structural exploded diagram of the first sensor assembly in the utility model;

[0030] Figure 6 It is a structural stereogram of the first sensor assembly in the utility model;

[0031] Figure 7 is a top view of the first sensor assembly in the utility model;

[0032] Figure 8 It is a stereoscopic diagram of the installation structure of the utility model in the application scenario of the fisheye indicator ball structure;

[0033] Fig. 9 This is another stereoscopic diagram of the installation structure of the utility model in the application scenario of the fisheye indicator ball structure;

[0034] Fig.10 It is a three-dimensional diagram of the installation structure of the utility model applied to the exposed pointer structure of the high-voltage switch position indication;

[0035] Fig.11 This is another stereoscopic diagram of the installation structure of the utility model applied to the exposed pointer structure of the high-voltage switch position indication;

[0036] Fig.12 This is a three-dimensional diagram of the installation structure of the utility model applied to a three-station machine for indicating the position of a high-voltage switch;

[0037] Fig.13 This is another stereoscopic diagram of the installation structure of the utility model applied to a three-station machine for indicating the position of a high-voltage switch;

[0038] The reference numerals and names in the figures are as follows:

[0039] Base assembly-100, first sensor assembly-200, second sensor assembly-300, base shell-110, PCBA board-120, first shell-210, first reed switch-220, second shell-310, insulating protection shell-002, signal interface-003, mounting hole-111, first waterproof connector-112, connecting wire-113. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] See also Figure 1-13 , a magnetic induction sensor based on a reed switch structure, comprising a base assembly 100, a first sensor assembly 200 and a second sensor assembly 300 connected to the base assembly 100;

[0042] The base assembly 100 includes a base housing 110 and a PCBA board 120 installed in the base housing 110;

[0043] The first sensor assembly 200 includes a first housing 210 and a first reed switch 220 disposed in the first housing 210;

[0044] The second sensor assembly 300 includes a second housing 310 and a second reed switch disposed in the second housing 310;

[0045] The first shell 210 and the second shell 310 are connected to the side of the base shell 110;

[0046] The first reed switch 220 and the second reed switch are electrically connected to the PCBA board 120 respectively;

[0047] During use, the sensor of the utility model is installed at the target detection part. The sensor of the utility model is generally used in conjunction with a magnet (including but not limited to a permanent magnet and an electromagnet). The magnet is fixedly installed on the knife switch device to be detected, and then the first sensor component 200 and the second sensor component 300 are fixedly deployed at the target detection part. After the first sensor component 200 and the second sensor component 300 are fixedly installed at the target detection part, the first sensor component 200 and the second sensor component 300 are respectively close to the magnet fixed on the knife switch device to be detected;

[0048] When the knife switch device rotates to the first target position, the magnet fixed on the knife switch device to be detected is close to the first sensor assembly 200, and the first reed switch 220 cooperates and responds and performs a corresponding on / off control action, thereby realizing the switching of the working state of the first reed switch 220, so that the knife switch device can achieve the purpose of automatic detection at the first target position;

[0049] When the knife switch device rotates to the second target position, the magnet fixed on the knife switch device to be detected is close to the second sensor component 300, and the second reed switch cooperates to respond and performs the corresponding on / off control action, thereby realizing the switching of the working state of the second reed switch, so that the knife switch device can achieve the purpose of automatic detection at the second target position. By adjusting the relative distance between the first sensor component 200 and the second sensor component 300, it can be adapted to the detection of different target positions. For example, when the first target position and the second target position are larger, the relative distance between the first sensor component 200 and the second sensor component 300 can be increased accordingly for adaptation;

[0050] The first reed switch 220 and the second reed switch are electrically connected to the PCBA board 120 respectively. When the first reed switch 220 or the second reed switch performs a corresponding on / off control action switch, the PCBA board 120 performs a corresponding working state switch according to the on / off control action of the first reed switch 220 or the second reed switch, thereby realizing real-time automatic control operation, making the sensor of the utility model respond faster, the control effect better, and the operation safer and more efficient;

[0051] The valve position sensor based on the reed switch structure of the utility model realizes automatic detection of the position state of the knife gate device through the cooperation of the first sensor component 200 and the second sensor component 300, and the installation structure is simple, which can be adapted to installation operations in different occasions, is compatible with knife gate structures of different specifications and models, and has a wide range of device size and angle adaptation and a wide range of use.

[0052] In one embodiment, a plurality of reed switch components are respectively provided in the first shell 210 and the second shell 310. During use, the plurality of reed switch components are respectively electrically connected to the PCBA board 120. When the knife switch device rotates to the first target position, the magnet fixedly mounted on the knife switch device is close to and cooperates with the first sensor assembly 200. When the magnet on the knife switch device approaches the first shell 210, the plurality of reed switch components in the first shell 210 respectively cooperate with and respond to the magnet on the knife switch device and perform corresponding on / off control actions, thereby realizing multi-channel control actions. When the knife switch device rotates to the second target position, the plurality of reed switches in the second shell 310 respectively cooperate with and respond to the magnet on the knife switch device and perform corresponding on / off control actions, thereby realizing multi-channel control actions, making the application scope of the utility model wider.

[0053] In the embodiment of the utility model, a mounting hole 111 is provided on the side wall of the base housing 110, a first waterproof connector 112 is threadedly installed in the mounting hole, a connecting wire 113 is hermetically extended from the first waterproof connector 112, and the first sensor assembly 200 and the second sensor assembly 300 are electrically connected to the first waterproof connector 112 through the connecting wire 113 respectively;

[0054] like Figure 3 As shown, a mounting hole 111 is opened on the side wall of the base shell 110, and the first waterproof connector is installed in the mounting hole 111 in a screw connection manner. At the same time, the connecting wire 113 extends out from the first waterproof connector 112 in a sealed manner, thereby ensuring the overall waterproof performance of the utility model. After the connecting wire 113 extends into the first sensor component 200 and the second sensor component 300, the connecting wire 113 is also sealed, so that the first reed switch and the second reed switch are connected to the PCBA board 120 in the base shell 110 through the connecting wire 113, so that the overall waterproof and protective performance of the utility model is better, and the overall shell protection performance of the sensor of the utility model can reach IP68 level.

[0055] In the embodiment of the utility model, the first housing 210 and the second housing 310 are respectively provided with a second waterproof connector 116 at the rear end, and the connecting wire 113 is inserted into the second waterproof connector 116 for a sealed connection;

[0056] like Figure 1 As shown, a second waterproof connector 116 is installed at the rear ends of the first shell 210 and the second shell 310. Through the cooperation between the first waterproof connector 112 and the second waterproof connector 116, the overall shell protection performance of the sensor of the utility model is further enhanced, so that the utility model can still work stably under the harsh conditions outdoors in the substation.

[0057] In the embodiment of the utility model, the working voltage of the first reed switch 220 and the second reed switch includes AC220V / DC110V / DC220V;

[0058] The maximum voltage of such sensors with existing technology in the industry is AC180 / DC180. During application, the sensor of the utility model is different from existing sensors in that the existing sensors generally require an external control circuit, which controls strong electricity through weak electricity through relays or other electronic control circuits to achieve induction control. The sensor of the utility model can directly connect and disconnect strong high-voltage signals, directly use strong electricity points to output separation and combination signals, and stably and reliably transmit the sensed switch status to the back-end system. In addition, the sensor does not require an external power supply to work normally, has lower cost, is easier to maintain, and has a simple circuit structure, which is conducive to the detection of safety hazards.

[0059] In the embodiment of the utility model, the rated voltage of the first reed switch 220 and the second reed switch is less than or equal to DC1000V or AC850V.

[0060] When the first reed switch 220 or the second reed switch cooperates and responds with the magnet installed on the knife switch device and performs corresponding on / off control actions, switching of the working state will cause a switching current to appear at the on / off connection part of the reed switch, causing the instantaneous voltage to increase exponentially. Therefore, in order to ensure the stable operation of the reed switch, the rated voltage of the reed switch needs to be increased to multiple times the working voltage.

[0061] In the embodiment of the utility model, the working current of the first reed switch 220 and the second reed switch is within the range of 0A to 1A.

[0062] When the working state of the first reed switch 220 or the second reed switch is switched, a switching current will appear at the on / off connection of the reed switch, causing the instantaneous current to increase exponentially. Therefore, in order to ensure the stable operation of the reed switch, it is necessary to increase the span of the working current of the reed switch and increase the maximum working current to 1A to ensure that the reed switch will not be broken down during the switching process.

[0063] In the embodiment of the utility model, the first reed switch 220 and the second reed switch are respectively provided with an insulating protective housing 002, and the insulating protective housing 002 is respectively fixed in the first housing 210 and the second housing 310 by insulating glue;

[0064] The first reed switch 220 and the second reed switch are insulated and impact-protected by the insulating protective shell 002, and the insulating protective shell 002 is respectively fixed in the first shell 210 and the second shell 310 by insulating glue, so that the insulation, waterproof and impact-proof performance of the first reed switch 220 and the second reed switch are better.

[0065] In the embodiment of the utility model, the base housing 110 is also fixed with a signal interface 003 electrically connected to the PCBA board 120;

[0066] The signal interface 003 is used for electrical connection and control with an external circuit;

[0067] In the embodiment of the utility model, a corrugated tube is sleeved on the external circuit structure connected to the base housing 110;

[0068] The overall waterproof, dustproof and impact-proof effects of the sensor of the utility model are further improved, and the overall service life is extended.

[0069] In the embodiment of the utility model, a mounting fastener 211 is sleeved and installed on the first housing 210, and a positioning hole 212 is opened on the mounting fastener 211 and runs through it from top to bottom. The positioning hole 212 is arranged in an arc shape along the periphery of the mounting fastener 211, and a fixing hole 213 is also opened on the mounting fastener 211 and runs through the side wall;

[0070] like Figure 5 , Figure 6 and Figure 7 As shown, a mounting fastener 211 is sleeved and installed on the first housing 210, and the first housing 210 is conveniently fixed to the target detection position by the mounting fastener 211. The positioning hole is arranged in an arc shape along the periphery of the mounting fastener 211, so that the mounting position of the positioning hole 211 is better approached to the outer wall of the mounting fastener 211, so that the first housing 210 is better approached to the target detection position, and the detection accuracy of the first reed switch 220 is improved;

[0071] The mounting clip 211 is also provided with a fixing hole 213 that passes through the side wall. By embedding a screw in the fixing hole 213, the mounting clip 211 can be quickly fixed to the outer wall of the first shell 210. By loosening the screw, the mounting position of the mounting clip 211 on the outer wall of the first shell 210 can be adjusted, so that the distance between the first shell 210 and the target detection position can be flexibly adjusted, making it more convenient to adjust the distance between the first reed switch 220 and the target detection position, which is conducive to finding a more suitable installation position, improving the detection accuracy, and improving the overall accuracy of the sensor of the utility model.

[0072] like Figures 8 to 11 As shown, in the actual installation process, in order to cooperate with different installation stations, the installation positions of the first sensor component 200 and the second sensor component 300 are adjusted, and external leads are respectively set between the base shell 110 and the first sensor component 200 and the second sensor component 300, so that the first sensor component 200 and the second sensor component 300 can be independently removed from the base shell 100, making the installation of the first sensor component 200 and the second sensor component 300 more flexible and having a wider range of applications.

[0073] like Figure 8 and 9 The figure shows a state diagram of one of the usage scenarios of the present invention. A permanent magnet is installed on the rotating part of the fisheye indicator ball e (fisheye structure), and a magnetic induction sensor of the present invention is installed at the corresponding position (one sensor for each of the open position and the closed position). When the indicator ball rotates into position, the corresponding magnetic induction sensor outputs a signal of arrival.

[0074] like Fig.10 and 11 The figure shows a state diagram of the utility model applied to an exposed pointer structure for indicating the position of a high-voltage switch. A permanent magnet is installed at the rotating part of the pointer f (the arm pointer structure), and a magnetic induction sensor is installed at the corresponding position (one sensor for each open position and closed position). When the pointer rotates to the position, the corresponding magnetic induction sensor outputs a position signal.

[0075] like Fig.12 and 13 As shown, it is a state diagram of the utility model applied to a three-station machine for indicating the position of a high-voltage switch. The three-station detection operation is realized through the cooperation of the first sensor component 200, the second sensor component 300 and the third-station sensor component 600. The structure of the third-station sensor component 600 is the same as the first sensor component 200 and the second sensor component 300. By analogy, multi-station detection operations can be realized by adding sensor components.

[0076] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A magnetic induction sensor based on a reed switch structure, characterized in that: It comprises a base assembly (100), to which a first sensor assembly (200) and a second sensor assembly (300) are connected; The base assembly (100) comprises a base housing (110) and a PCBA board (120) installed in the base housing (110); The first sensor assembly (200) comprises a first housing (210) and a first reed switch (220) disposed in the first housing (210); The second sensor assembly (300) comprises a second housing (310) and a second reed switch arranged in the second housing (310); The first reed switch (220) and the second reed switch are electrically connected to the PCBA board (120) respectively.

2. A magnetic induction sensor based on a reed switch structure according to claim 1, characterized in that: A mounting hole (111) is provided on the side wall of the base housing (110), a first waterproof connector (112) is threadedly mounted in the mounting hole, a connecting wire (113) is hermetically extended from the first waterproof connector (112), and the first sensor component (200) and the second sensor component (300) are electrically connected to the first waterproof connector (112) via the connecting wire (113), respectively.

3. A magnetic induction sensor based on a reed switch structure according to claim 2, characterized in that: The rear ends of the first shell (210) and the second shell (310) are respectively provided with second waterproof connectors (116), and the connecting wire (113) extends into the second waterproof connector (116) for airtight connection.

4. A magnetic induction sensor based on a reed switch structure according to claim 3, characterized in that: The working voltages of the first reed switch (220) and the second reed switch include AC220V / DC110V / DC220V.

5. A magnetic induction sensor based on a reed switch structure according to claim 4, characterized in that: The rated voltage of the first reed switch (220) and the second reed switch is less than or equal to DC1000V or AC850V.

6. The magnetic induction sensor based on the reed switch structure according to claim 3, characterized in that: The operating current of the first reed switch (220) and the second reed switch ranges from 0A to 1A.

7. The magnetic induction sensor based on the reed switch structure according to claim 1, characterized in that: The first reed switch (220) and the second reed switch are respectively sleeved with an insulating protective shell (002), and the insulating protective shell (002) is respectively fixed in the first shell (210) and the second shell (310) by insulating glue.

8. A magnetic induction sensor based on a reed switch structure according to any one of claims 1 to 7, characterized in that: A signal interface (003) electrically connected to the PCBA board (120) is also mounted and fixed on the base housing (110).

9. The magnetic induction sensor based on the reed switch structure according to claim 1, characterized in that: A corrugated tube is sleeved on the external line structure connected to the base housing (110).

10. The magnetic induction sensor based on the reed switch structure according to claim 1, characterized in that: A mounting clip (211) is sleeved and mounted on the first housing (210), and a positioning hole (212) is provided on the mounting clip (211) and passes through the mounting clip (211) from top to bottom. The positioning hole is arranged in an arc shape along the periphery of the mounting clip (211), and a fixing hole (213) is also provided on the mounting clip (211) and passes through the side wall.

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