Non-invasive passive coupling signal enhancer, sensor structure and method of operation thereof

Abstract

The application provides a non-invasive passive coupling signal enhancer, a sensor structure and a working method thereof. The non-invasive passive coupling signal enhancer comprises a passive signal enhancement ring, wherein a coupling radiator is arranged on the passive signal enhancement ring; the passive signal enhancement ring is in a circular ring shape, and the material is a material with a relative dielectric constant of 4.3; the coupling radiator is in the shape of two upper and lower symmetrical circular arcs, the length of each circular arc is 1 / 4 to 1 / 3 of the total length of the passive signal enhancement ring circular ring, the width of the circular arc is 2 mm, and the material is metal. The sensor structure further comprises a passive wireless sensor, an acquisition antenna, a T-shaped sleeve and a sleeve rear cover; the application can effectively transmit the wireless signal to the passive wireless sensor wrapped in the medium through the coupling mode, and radiate the information returned by the passive wireless sensor obtained through the coupling to the antenna, so that the signal is significantly enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless sensing, in particular, to a non-invasive passive coupling signal enhancer, a sensor structure and a working method thereof, in particular to a non-invasive passive coupling signal enhancer for a passive wireless sensor, a sensor structure and a working method thereof. BACKGROUND

[0002] The intelligent sensing element is installed at the key equipment of the smart grid and monitors the key parameters of the operation of each equipment, so that the smart grid can respond in time to the changing environment, the number of energy and the same passive wireless sensor can be online for a long time without battery, wireless operation can realize effective isolation of high and low voltage, and at the same time, the volume is small, which is very suitable for deployment on the high-voltage side of the power equipment, especially the switch equipment.

[0003] But in the actual deployment process, the passive wireless sensor is difficult to transmit signals in some semi-conductive shielding medium, which is due to the attenuation caused by the reflection of electromagnetic wave signals through multiple medium interfaces, especially after the signal enters the air interface, most of the energy has been lost, causing the signal to fail to reach the collection antenna, resulting in reading failure. Therefore, a signal enhancement method is needed, and the method should not use additional power supply. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide a non-invasive passive coupling signal enhancer, a sensor structure and a working method thereof.

[0005] According to the non-invasive passive coupling signal enhancer provided by the present application, the passive signal enhancement ring is provided with a coupling radiator.

[0006] The shape of the passive signal enhancement ring is a circular ring type.

[0007] The shape of the coupling radiator is two upper and lower symmetrical circular arcs, the length of each circular arc is 1 / 4 to 1 / 3 of the total length of the passive signal enhancement ring circular ring, and the material is metal.

[0008] Preferably, the relative dielectric constant of the passive signal enhancement ring is 4.3.

[0009] Preferably, the width of the coupling radiator circular arc is 2mm.

[0010] Preferably, the coupling radiator is attached to the passive signal enhancement ring by PCB process.

[0011] Preferably, the passive signal enhancement ring is made of glass fiber plate.

[0012] Preferably, the material of the coupling radiator is copper.

[0013] A sensor structure provided by the present invention includes a non-invasive passive coupling signal enhancer, a passive wireless sensor, a collection antenna, a T-shaped sleeve, and a sleeve back cover;

[0014] The T-shaped sleeve includes a first pipe portion and a second pipe portion, the first pipe portion and the second pipe portion are arranged perpendicular to each other, and one end of the second pipe portion is integrally connected to the first pipe portion; the sleeve rear cover is covered on one end of the first pipe portion;

[0015] The T-shaped sleeve is a cable connection joint. The first external cable passes through the sleeve back cover and is connected to one end of the first tube part, and the second external cable is connected to the end of the second tube part.

[0016] The passive wireless sensor is inserted into the T-shaped sleeve from the outside of the T-shaped sleeve and contacts the first external cable;

[0017] The non-intrusive passive coupling signal enhancer is sleeved on the outside of the first pipe part, and the non-intrusive passive coupling signal enhancer is coupled to the passive wireless sensor.

[0018] According to a working method of a sensor structure provided by the present invention, the working method of the sensor structure is the working method of the sensor structure according to claim 7, comprising the following steps:

[0019] The collection antenna transmits a wireless transmission signal, which is received by the coupling radiator and coupled to the passive wireless sensor in the T-shaped sleeve through the coupling radiator. After being excited by the wireless transmission signal, the passive wireless sensor transmits a return signal, which is coupled to the coupling radiator and radiated to the collection antenna through the coupling radiator.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can effectively transmit wireless signals to a passive wireless sensor wrapped in a medium by coupling, and radiate the coupled passive wireless sensor return information to the antenna, thereby achieving significant signal enhancement.

[0022] 2. The signal booster of the present invention achieves signal enhancement through the coupling principle, does not require other power supply access, is completely passive, and has significantly improved safety and maintainability compared to signal boosters that require power. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0024] Figure 1Schematic diagram of the structure of the non-invasive passive coupling signal enhancer of the present invention in two views;

[0025] Figure 2 This is a schematic diagram of the working principle of the sensor structure of the present invention;

[0026] Figure 3 Schematic diagram of the two-view structure of the sensor structure of the present invention.

[0027] The figure shows:

[0028] DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0030] Aiming at the problem of signal reading of existing passive wireless sensors in semi-shielded media, the present invention provides a non-intrusive passive coupling signal enhancer, comprising a passive signal enhancement ring 1, on which a coupling radiator 11 is provided; the coupling radiator 11 is attached to the passive signal enhancement ring 1 through a PCB process;

[0031] The passive signal enhancement ring 1 is in the shape of a ring, with an inner diameter greater than 50 mm, an outer diameter 20 mm larger than the inner diameter, and a thickness of 2 mm. The material is a glass fiber board with a relative dielectric constant of 4.3. In a preferred embodiment, the ring is in the shape of a circular ring or a square ring. When the passive signal enhancement ring 1 is in the shape of a circular ring, the coupled radiator 11 is in the shape of two symmetrical arcs, each of which is 1 / 4 to 1 / 3 the total length of the ring. The arc is 2 mm wide and the material is copper. The coupled radiator 11 is 50 μm thick.

[0032] The present invention also provides a sensor structure, including the non-invasive passive coupling signal enhancer, and further including a passive wireless sensor 2, a collection antenna 3, a T-shaped sleeve 4 and a sleeve back cover 5;

[0033] The T-shaped sleeve 4 comprises a first tube portion 41 and a second tube portion 42, arranged perpendicularly to each other. One end of the second tube portion 42 is integrally connected to the first tube portion 41. The sleeve rear cover 5 covers one end of the first tube portion 41. The T-shaped sleeve 4 serves as a cable connector. A first external cable passes through the sleeve rear cover 5 and connects to one end of the first tube portion 41. A second external cable connects to the end of the second tube portion 42. The passive wireless sensor 2 is inserted into the T-shaped sleeve 4 from the outside and contacts the first cable.

[0034] The non-intrusive passive coupling signal enhancer is mounted on the outside of the first tube 41 and is coupled to the passive wireless sensor 2. In a preferred embodiment, the non-intrusive passive coupling signal enhancer is mounted at the junction of the first tube 41 and the second tube 42 near the side of the passive wireless sensor 2.

[0035] In the sensor structure, the installation process of the non-invasive passive coupling signal enhancer is as follows: first remove the sleeve rear cover 5, put the passive signal enhancement ring 1 on the T-shaped sleeve 4, and push the passive signal enhancement ring 1 to the end until it cannot be pushed further, and then reinstall the sleeve rear cover 5.

[0036] The present invention also provides a working method of the sensor structure, which is as follows: the collection antenna 3 transmits a wireless transmission signal, which is received by the coupling radiator 11 and coupled to the passive wireless sensor 2 in the T-shaped sleeve 4 through the coupling radiator 11. After being excited by the wireless transmission signal, the passive wireless sensor 2 transmits a return signal, which is coupled to the coupling radiator 11 and radiated to the collection antenna 3 through the coupling radiator 11.

[0037] In a preferred example, the sensor structure can be used to measure the temperature of the first cable. Specifically, after the passive wireless sensor 2 is excited, since the passive wireless sensor 2 and the first cable are in contact with each other, the wireless sensor 2 can obtain the temperature of the first cable and then radiate its temperature signal to the collection antenna 3 through the coupled radiator 11.

[0038] The present invention solves the problem of existing digital and energy simultaneous transmission passive wireless sensors whose signals decay rapidly in certain media and cannot be radiated into the air, and achieves stable reading of passive wireless sensors installed in insulating and semi-conductive media such as casings. Specifically, the present invention can effectively transmit wireless signals to passive wireless sensors enclosed in the medium through coupling, and radiate the coupled passive wireless sensor return information to the antenna, thereby achieving significant signal enhancement. In addition, the signal enhancer of the present invention achieves signal enhancement through the coupling principle, does not require other power supply access, is completely passive, and has significantly improved safety and maintainability compared to signal enhancers that require power.

[0039] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A sensor structure, characterized in that: The invention comprises a non-intrusive passive coupling signal enhancer, a passive wireless sensor (2), a collection antenna (3), a T-shaped sleeve (4) and a sleeve back cover (5), wherein the non-intrusive passive coupling signal enhancer comprises a passive signal enhancement ring (1); the passive signal enhancement ring (1) is in the shape of a circular ring; The passive signal enhancement ring (1) is provided with a coupled radiator (11); the coupled radiator (11) is shaped as two vertically symmetrical arcs, the length of each arc being 1 / 4 to 1 / 3 of the total length of the passive signal enhancement ring (1), and the material is metal; The relative dielectric constant of the passive signal enhancement ring (1) is 4.3; The width of the arc of the coupled radiator (11) is 2 mm; The coupled radiator (11) is attached to the passive signal enhancement ring (1) through a PCB process; The T-shaped sleeve (4) comprises a first pipe portion (41) and a second pipe portion (42), wherein the first pipe portion (41) and the second pipe portion (42) are arranged perpendicular to each other, and one end of the second pipe portion (42) is integrally connected to the first pipe portion (41); the sleeve rear cover (5) covers one end of the first pipe portion (41); The T-shaped sleeve (4) is a cable connection joint. A first external cable passes through the sleeve rear cover (5) and is connected to one end of the first tube portion (41). A second external cable is connected to the end of the second tube portion (42). The passive wireless sensor (2) is inserted into the T-shaped sleeve (4) from the outside of the T-shaped sleeve (4) and is in contact with the external first cable; The non-invasive passive coupling signal enhancer is sleeved on the outside of the first pipe part (41), and the non-invasive passive coupling signal enhancer is coupled to the passive wireless sensor (2).

2. The sensor structure according to claim 1, characterized in that The passive signal enhancement ring (1) is made of glass fiber board.

3. The sensor structure according to claim 1, characterized in that The material of the coupled radiator (11) is copper.

Images