CN220063039U - Sensor with non-contact communication function - Google Patents

Abstract

The utility model provides a sensor with a non-contact communication function, which comprises a sensor body and a sensor head, wherein the sensor head is detachably connected to one end part of the sensor body; the sensor body comprises a first shell, a circuit device and a coil assembly, wherein the circuit device is installed in an inner cavity of the first shell, and the coil assembly is electrically connected with the circuit device and is installed at the end part of the first shell; the sensor head includes a second housing and a storage medium mounted in the second housing, with non-contact communication being formed between the sensor head and the sensor body when the sensor head is mounted on the sensor body, technical parameters of the sensor head being read by the sensor body, and/or the sensor body writing test data into the storage medium in the sensor head. The utility model has simple structure, convenient operation, high efficiency and convenient installation and disassembly. This structure has small size requirements, low manufacturing cost, and is commonly used for various types of sensors.

Description

Sensor with non-contact communication function

Technical Field

The utility model relates to the field of sensors, in particular to a sensor with a non-contact communication function.

Background

In the field of sensors, when a replaceable sensing head is mounted on a sensor body, the sensing head needs to be identified, relevant technical parameters are read, and relevant test data need to be recorded in the test process.

In the prior art, the mode of manually inputting related parameters is widely adopted, the efficiency is low, the operation is complicated, and the workload of operators is increased.

In the prior art, there is a structural form of contact communication, but the structure has high requirements on size, limited application space in a small sensor, complicated structure and high manufacturing cost. In view of the above, the present inventors devised a sensor with a contactless communication function, so as to overcome the above-mentioned problems.

Disclosure of Invention

The utility model aims to overcome the defect that a small-sized sensor body cannot automatically identify an induction head in the prior art, and provides a sensor with a non-contact communication function.

The utility model solves the technical problems by the following technical proposal:

the sensor with the non-contact communication function is characterized by comprising a sensor body and a sensor head, wherein the sensor head is detachably connected to one end part of the sensor body;

the sensor body comprises a first shell, a circuit device and a coil assembly, wherein the circuit device is installed in an inner cavity of the first shell, and the coil assembly is electrically connected with the circuit device and is installed at the end part of the first shell;

the sensor head comprises a second shell and a storage medium, wherein the storage medium is arranged in the second shell, when the sensor head is arranged on the sensor body, non-contact communication is formed between the sensor head and the sensor body, the sensor body reads technical parameters of the sensor head, and/or the sensor body writes test data into the storage medium in the sensor head.

According to one embodiment of the utility model, the coil assembly includes a coil and a coil mount, the coil being mounted on the coil mount and the coil mount being mounted within an end of the first housing.

According to one embodiment of the present utility model, the coil assembly includes a coil and a coil mount on which the coil is mounted, the coil mount being connected to an end of the first housing and protruding toward a side toward the second housing.

According to one embodiment of the utility model, the coil is wound on the coil mount in a multi-turn loop and soldered to the circuit device by wire bonding.

According to one embodiment of the utility model, the first housing is made of plastic or metal.

According to one embodiment of the utility model, the storage medium is an electronic tag.

According to one embodiment of the present utility model, the second housing is a hollow cavity, and the shape of the inner wall surface of the second housing matches the shape of the outer wall surface of the end portion of the first housing.

According to one embodiment of the utility model, the second housing is made of plastic, and the storage medium is fixed in the second housing by means of adhesion or mechanical fixing.

According to one embodiment of the utility model, the second housing is made of metal, the storage medium is fixed in the second housing by bonding or mechanical fixing, and an anti-metal paste is arranged between the outer part of the storage medium and the second housing.

According to one embodiment of the utility model, the sensor body and the sensor head communicate with each other at a distance of 0-3mm from the coil assembly; when the distance between the storage medium and the coil assembly is more than 3mm, communication between the sensor body and the sensor head is interrupted.

The utility model has the positive progress effects that:

the sensor with the non-contact communication function has the advantages of simple structure, convenient operation, high efficiency and convenient installation and disassembly.

The sensor can be conveniently assembled, replaced and communicated through the coil assembly and the storage medium, and the sensor body can directly and automatically identify the induction head and read corresponding technical parameters such as serial numbers, calibration data and the like. Meanwhile, compared with a sensor of contact communication, the sensor with the structure does not need to be provided with physical electric shock on the sensor and the sensor head, so that the sensor has small size requirements, can be applied to sensors with small size, has low manufacturing cost and is generally applied to various types of sensors.

Drawings

The above and other features, properties and advantages of the present utility model will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which like reference characters designate like features throughout the drawings, and in which:

fig. 1 is a schematic structural diagram of a sensor with a contactless communication function according to the present utility model.

Fig. 2 is a cross-sectional view of the first embodiment of fig. 1 taken along line A-A.

Fig. 3 is an exploded view of a first embodiment of a sensor with contactless communication functionality according to the present utility model.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a cross-sectional view of the second embodiment of fig. 1 taken along line A-A.

Fig. 6 is an exploded view of a second embodiment of a sensor with contactless communication functionality according to the present utility model.

Fig. 7 is an enlarged view of a portion C in fig. 6.

Fig. 8 is a schematic diagram of the operation of the sensor with contactless communication function of the present utility model.

[ reference numerals ]

Sensor body 10

Sensor head 20

First housing 11

Circuit arrangement 12

Coil assembly 13

Second housing 21

Storage medium 22

Coil 131

Coil mounting base 132

Card reader chip 100

Card reader antenna 200

Electronic tag antenna 300

Detailed Description

In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Furthermore, although terms used in the present utility model are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present utility model is understood, not simply by the actual terms used but by the meaning of each term lying within.

Embodiment one:

fig. 1 is a schematic structural diagram of a sensor with a contactless communication function according to the present utility model. Fig. 2 is a cross-sectional view of the first embodiment of fig. 1 taken along line A-A. Fig. 3 is an exploded view of a first embodiment of a sensor with contactless communication functionality according to the present utility model. Fig. 4 is an enlarged view of a portion B in fig. 3.

As shown in fig. 1 to 4, the present utility model discloses a sensor having a non-contact communication function, which includes a sensor body 10 and a sensor head 20, the sensor head 20 being detachably connected to one end of the sensor body 10. For example, an outer wall surface of one end portion of the sensor body 10 is provided with external threads, the sensor head 20 is provided with a cavity structure, and an inner wall surface is provided with internal threads, so that connection between the sensor head 20 and the sensor body 10 is achieved through threads. Of course, other connection modes may implement the technical solution of the present utility model, and this is only exemplary and not limiting.

The sensor body 10 comprises a first housing 11, a circuit arrangement 12 and a coil assembly 13. The circuit device 12 is mounted in the inner cavity of the first housing 11, and the coil assembly 13 is electrically connected to the circuit device 12 and mounted at an end of the first housing 11. The sensor head 20 includes a second housing 21 and a storage medium 22, and the storage medium 22 is mounted in the second housing 21. When the sensor head 20 is mounted on the sensor body 10, a contactless communication is formed between the sensor head 20 and the sensor body 10, technical parameters of the sensor head 20 are read by the sensor body 10, and/or the sensor body 10 writes test data into a storage medium 22 within the sensor head 20.

Preferably, the circuit device 12 in this embodiment may preferably be a printed circuit board, on which components or structures such as a card reader chip, a radio signal conditioning circuit, and a card reader antenna may be disposed.

The coil assembly 13 includes a coil 131 and a coil mount 132, the coil 131 is mounted on the coil mount 132, and the coil mount 132 is mounted in an end of the first housing 11. For example, the coil 131 may be preferably multi-turn looped around the coil mount 132 and soldered to the circuit device 12 by wire bonding. The material of the coil mounting base 132 is not particularly limited, and may be PC, PMMA, glass, or the like.

In addition, the first housing 11 may be preferably made of plastic or metal. When the first housing 11 is made of plastic, the coil 131 is wound around the coil mount 132, and the coil mount 132 is mounted in the end of the first housing 11, the communication effect of this structure is good. When the first housing 11 is made of metal, the coil 131 is wound on the coil mounting seat 132, and the coil mounting seat 132 is mounted in the end of the first housing 11, and this structure requires additional measures such as metal adhesion resistance due to the fact that the coil 131 is built in, which is helpful for improving the communication effect.

The storage medium 22 in this embodiment may preferably be an electronic tag. The electronic tag may be designed to include a multi-turn coil, a chip, and a capacitor.

For the electronic tag, the electronic tag in the utility model refers to a component consisting of an annular flexible circuit board, an on-board inductor, a capacitor and a microchip.

Preferably, the electronic tag in the utility model can adopt the following 5 kinds of electronic tags:

class 1 electronic tag: this type is based on the ISO14443A standard. Such tags have the ability to be read, rewritten, and a user can configure them to be read-only. The storage capacity is 96 bytes, and is used for storing URL (uniform resource locator) or other small amount of data. However, memory may be extended to 2 kbytes. The communication speed of such NFC tags is 106kbit/s. Such tags are compact and therefore cost effective, and are suitable for many NFC applications.

Class 2 electronic tag: such tags are also based on ISO14443A, with readable, re-writable capabilities, which can be configured by a user as read-only. Its basic memory size is 48 bytes, but can be extended to 2 kbytes. The communication speed is also 106kbit/s.

Class 3 electronic tag: such tags are based on the Sony FeliCa system. Currently, the memory capacity is 2 kbytes, and the data communication speed is 212kbit/s. Such tags are therefore more suitable for more complex applications, despite the higher costs.

Class 4 electronic tag: such tags are defined as compatible with the ISO14443A, B standard. Is preset to be readable/rewritable or read-only at the time of manufacture. The memory capacity can reach 32 kbytes, and the communication speed is between 106kbit/s and 424 kbit/s.

Class 5 electronic tag: the RFID protocol to which such tags correspond is an ISO15693 series RFID chip. NFC Forum was introduced into this series of chips in order to meet the growing variety of long-range, miniaturized NFC tags and applications thereof.

The second housing 21 is preferably a hollow cavity, and the shape of the inner wall surface of the second housing 21 matches the shape of the outer wall surface of the end portion of the first housing 11. If the second housing 21 is made of plastic, the storage medium is directly fixed in the second housing 21 by means of adhesion or mechanical fixation. Or, if the second housing 21 is made of metal, the storage medium is fixed in the second housing 21 by adhesion or mechanical fixing, and an anti-metal paste is disposed between the exterior of the storage medium and the second housing 21, so as to improve the communication effect.

Fig. 8 is a schematic diagram of the operation of the sensor with contactless communication function of the present utility model.

As shown in fig. 8, the sensor with the non-contact communication function of the present utility model has a sensor body containing a card reader chip 100, a radio signal modulation circuit and a card reader antenna 200, and an electronic tag (i.e., a storage medium 22) containing an electronic tag antenna 300 and a signal processing chip, and the energy comes from the radio signal itself. The card reader chip 100 controls the output current to generate a varying magnetic field, modulating the request. The tag antenna 300 captures the induced magnetic field signal and demodulates the request.

The sensor works: when the storage medium 22 (i.e., electronic tag) is positioned close to the coil block 13 (i.e., sensor body) and spaced apart from 0-3mm, the signal coupling coefficient between the two is enhanced to such an extent that the two can communicate with each other, and the sensor body 10 and the sensor head 20 communicate with each other. When the storage medium 22 (i.e., electronic tag) is located at a position and distance greater than 3mm away from the coil assembly 13 (i.e., sensor body), the signal coupling coefficient of both decreases, and communication between the sensor body 10 and the sensor head 20 is interrupted.

Embodiment two:

fig. 5 is a cross-sectional view of the second embodiment of fig. 1 taken along line A-A. Fig. 6 is an exploded view of a second embodiment of a sensor with contactless communication functionality according to the present utility model. Fig. 7 is an enlarged view of a portion C in fig. 6.

As shown in fig. 5 to 7, the present embodiment discloses another sensor having a noncontact communication function, which includes a sensor body 10 and a sensor head 20, the sensor head 20 being detachably connected to one end portion of the sensor body 10. For example, an outer wall surface of one end portion of the sensor body 10 is provided with external threads, the sensor head 20 is provided with a cavity structure, and an inner wall surface is provided with internal threads, so that connection between the sensor head 20 and the sensor body 10 is achieved through threads. Of course, other connection modes may implement the technical solution of the present utility model, and this is only exemplary and not limiting.

The sensor body 10 comprises a first housing 11, a circuit arrangement 12 and a coil assembly 13. The circuit device 12 is mounted in the inner cavity of the first housing 11, and the coil assembly 13 is electrically connected to the circuit device 12 and mounted at an end of the first housing 11. The sensor head 20 includes a second housing 21 and a storage medium 22, and the storage medium 22 is mounted in the second housing 21. When the sensor head 20 is mounted on the sensor body 10, a contactless communication is formed between the sensor head 20 and the sensor body 10, technical parameters of the sensor head 20 are read by the sensor body 10, and/or the sensor body 10 writes test data into a storage medium 22 within the sensor head 20. Preferably, the circuit device 12 in this embodiment may preferably employ a printed circuit board on which components or structures such as a card reader chip, a radio signal conditioning circuit, and a card reader antenna may be disposed.

The coil assembly 13 includes a coil 131 and a coil mount 132, the coil 131 is mounted on the coil mount 132, and the coil mount 132 is connected with an end of the first housing 11 and protrudes toward one side of the second housing 21. For example, the coil 131 may be preferably multi-turn looped around the coil mount 132 and soldered to the circuit device 12 by wire bonding. The material of the coil mounting base 132 is not particularly limited, and may be PC, PMMA, glass, or the like.

The first housing 11 may preferably be made of plastic or metal. When the first housing 11 is made of plastic, the coil 131 is wound around the coil mount 132, and the coil mount 132 is connected to the end of the first housing 11 and protrudes toward one side of the second housing 21, so that the communication effect of this structure is good.

When the first housing 11 is made of metal, the coil 131 is wound on the coil mounting seat 132, and the coil mounting seat 132 is connected with the end of the first housing 11 and protrudes towards one side of the second housing 21, so that the structure has better communication effect because the coil 131 is external and no additional measures such as metal adhesion resistance are needed.

The storage medium 22 in this embodiment may preferably be an electronic tag. The electronic tag may be designed to include a multi-turn coil, a chip, and a capacitor.

For the electronic tag, the electronic tag in the utility model refers to a component consisting of an annular flexible circuit board, an on-board inductor, a capacitor and a microchip.

Preferably, the electronic tag in the utility model can adopt the following 5 kinds of electronic tags:

class 1 electronic tag: this type is based on the ISO14443A standard. Such tags have the ability to be read, rewritten, and a user can configure them to be read-only. The storage capacity is 96 bytes, and is used for storing URL (uniform resource locator) or other small amount of data. However, memory may be extended to 2 kbytes. The communication speed of such NFC tags is 106kbit/s. Such tags are compact and therefore cost effective, and are suitable for many NFC applications.

Class 2 electronic tag: such tags are also based on ISO14443A, with readable, re-writable capabilities, which can be configured by a user as read-only. Its basic memory size is 48 bytes, but can be extended to 2 kbytes. The communication speed is also 106kbit/s.

Class 3 electronic tag: such tags are based on the Sony FeliCa system. Currently, the memory capacity is 2 kbytes, and the data communication speed is 212kbit/s. Such tags are therefore more suitable for more complex applications, despite the higher costs.

Class 4 electronic tag: such tags are defined as compatible with the ISO14443A, B standard. Is preset to be readable/rewritable or read-only at the time of manufacture. The memory capacity can reach 32 kbytes, and the communication speed is between 106kbit/s and 424 kbit/s.

Class 5 electronic tag: the RFID protocol to which such tags correspond is an ISO15693 series RFID chip. NFC Forum was introduced into this series of chips in order to meet the growing variety of long-range, miniaturized NFC tags and applications thereof.

The second housing 21 is preferably a hollow cavity, and the shape of the inner wall surface of the second housing 21 matches the shape of the outer wall surface of the end portion of the first housing 11.

If the second housing 21 is made of plastic, the storage medium is directly fixed in the second housing 21 (i.e. the sensor head) by means of adhesive bonding, or mechanical fixing. Or, if the second housing 21 is made of metal, the storage medium is fixed in the second housing 21 by adhesion or mechanical fixing, and an anti-metal paste is disposed between the exterior of the storage medium and the second housing 21, so as to improve the communication effect.

Fig. 8 is a schematic diagram of the operation of the sensor with contactless communication function of the present utility model.

As shown in fig. 8, the sensor with the non-contact communication function of the present utility model has a sensor body containing a card reader chip 100, a radio signal modulation circuit and a card reader antenna 200, and an electronic tag (i.e., a storage medium 22) containing an electronic tag antenna 300 and a signal processing chip, and the energy comes from the radio signal itself. The card reader chip 100 controls the output current to generate a varying magnetic field, modulating the request. The tag antenna 300 captures the induced magnetic field signal and demodulates the request.

The sensor works: when the storage medium 22 (i.e., electronic tag) is positioned close to the coil block 13 (i.e., sensor body) and spaced apart from 0-3mm, the signal coupling coefficient between the two is enhanced to such an extent that the two can communicate with each other, and the sensor body 10 and the sensor head 20 communicate with each other. When the storage medium 22 (i.e., electronic tag) is located at a position and distance greater than 3mm away from the coil assembly 13 (i.e., sensor body), the signal coupling coefficient of both decreases, and communication between the sensor body 10 and the sensor head 20 is interrupted.

According to the structure description, the sensor with the non-contact communication function comprises a near field communication structure, and comprises a chip, a coil and an electronic tag, wherein the coil is in a multi-loop form and is used as a main radiator to generate a magnetic field required by communication. The electronic tag is fixed in the replaceable sensor head for distinguishing between different sensor heads. The coil is fixed in the sensor body, and the electronic tag is fixed inside the sensor head. When the sensor head is mounted to the sensor body, the sensor body can read relevant technical parameters of the sensor head and can write test data into an electronic tag chip in the sensor head.

In summary, the sensor with the non-contact communication function of the present utility model can be applied to a pH electrode, an ion electrode, a dissolved oxygen electrode, a turbidity sensor, and the like. The sensor is simple in structure, convenient to operate, high in efficiency and convenient to install and detach.

The sensor can be conveniently assembled, replaced and communicated through the coil assembly and the storage medium, and the sensor body can directly and automatically identify the induction head and read corresponding technical parameters such as serial numbers, calibration data and the like. Meanwhile, compared with a sensor of contact communication, the sensor with the structure does not need to be provided with physical electric shock on the sensor and the sensor head, so that the sensor has small size requirements, can be applied to sensors with small size, has low manufacturing cost and is generally applied to various types of sensors.

The utility model uses specific words to describe embodiments of the utility model. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the utility model. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the utility model may be combined as suitable.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. A sensor with a non-contact communication function, characterized in that the sensor comprises a sensor body and a sensor head, wherein the sensor head is detachably connected to one end part of the sensor body;

the sensor body comprises a first shell, a circuit device and a coil assembly, wherein the circuit device is installed in an inner cavity of the first shell, and the coil assembly is electrically connected with the circuit device and is installed at the end part of the first shell;

the sensor head comprises a second shell and a storage medium, wherein the storage medium is arranged in the second shell, when the sensor head is arranged on the sensor body, non-contact communication is formed between the sensor head and the sensor body, the sensor body reads technical parameters of the sensor head, and/or the sensor body writes test data into the storage medium in the sensor head.

2. The sensor with contactless communication function of claim 1, wherein the coil assembly comprises a coil and a coil mount, the coil being mounted on the coil mount and the coil mount being mounted within an end of the first housing.

3. The sensor with a noncontact communication function as claimed in claim 1, wherein the coil assembly includes a coil and a coil mount on which the coil is mounted, the coil mount being connected to an end of the first housing and protruding toward one side of the second housing.

4. A sensor with a contactless communication function according to claim 2 or 3, wherein the coil is wound on the coil mount in a multi-turn loop and soldered to the circuit device by a wire.

5. The sensor with contactless communication function according to claim 4, wherein the first housing is made of plastic or metal.

6. The sensor with a contactless communication function according to claim 1, wherein the storage medium is an electronic tag.

7. The sensor with a noncontact communication function as claimed in claim 1, wherein the second housing is a hollow cavity, and an inner wall surface shape of the second housing and an end outer wall surface shape of the first housing are matched with each other.

8. The sensor with a contactless communication function according to claim 7, wherein the second housing is made of plastic, and the storage medium is fixed in the second housing by bonding or mechanical fixing.

9. The sensor with a contactless communication function according to claim 7, wherein the second housing is made of metal, the storage medium is fixed in the second housing by bonding or mechanical fixing, and a metal-resistant paste is provided between the outside of the storage medium and the second housing.

10. The sensor with a noncontact communication function as claimed in claim 1, wherein said sensor body and said sensor head communicate with each other at a distance of 0-3mm from said coil assembly; when the distance between the storage medium and the coil assembly is more than 3mm, communication between the sensor body and the sensor head is interrupted.