Wireless density transmitter and system with inner antenna and outer antenna

Abstract

The utility model provides a wireless density transmitter and system with internal and external double antennas, and the wireless density transmitter comprises a housing which comprises an inner cavity for accommodating each electrical element; the gas circuit connecting seat is arranged at one end of the shell and is used for being connected with a gas circuit to be tested; the sensor assembly is arranged in the gas circuit connecting seat; the control assembly is arranged in the inner cavity and is connected with the sensor assembly; the antenna assembly comprises an antenna housing, a built-in antenna and an external antenna, and the control assembly can switch the built-in antenna and the external antenna according to needs to transmit to-be-detected gas path signal data acquired by the sensor assembly; according to the utility model, wireless signal transmission is carried out through the built-in antenna and the external antenna which can be freely switched, so that the problems that the wiring construction workload is large, cable protection is needed, and signal transmission is weak due to the fact that a gas density monitoring device in the prior art is not suitable for field installation environment shielding when the gas density monitoring device is arranged on site are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of density transmitters, in particular to a wireless density transmitter with internal and external double antennas and a system. Background Art

[0002] At present, SF6 (sulfur hexafluoride) electrical equipment has been widely used in power departments and industrial and mining enterprises, promoting the rapid development of the power industry. In recent years, with the rapid economic development, the capacity of my country's power system has expanded dramatically, and the use of SF6 electrical equipment has increased. The role of SF6 gas in high-voltage electrical equipment is arc extinguishing and insulation. The reduction of SF6 gas density in high-voltage electrical equipment will seriously affect the safe operation of SF6 high-voltage electrical equipment: the reduction of SF6 gas density to a certain extent will lead to the loss of insulation and arc extinguishing performance.

[0003] As unmanned substations develop towards networking and digitalization, and the requirements for remote control and telemetry continue to increase, online monitoring of the gas density of SF6 electrical equipment has important practical significance. With the continuous and vigorous development of China's smart grid and ubiquitous power Internet of Things, smart high-voltage electrical equipment, as an important component and key node of smart substations, plays a vital role in the safety of smart grids. Most high-voltage electrical equipment is currently SF6 gas-insulated equipment. If the gas density is reduced (such as caused by leakage, etc.), it will seriously affect the electrical performance of the equipment and cause serious hidden dangers to safe operation. For this reason, gas density relays have been booming.

[0004] Density monitoring instruments in the prior art mostly require wired power supply and wired signal wiring. The on-site wiring construction workload is large, and the cables need to be protected, making wiring difficult and cumbersome. Similarly, wireless density monitoring instruments in the prior art have high requirements for on-site signal strength and cannot be used when the on-site installation environment blocks signal transmission and is weak. Utility Model Content

[0005] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the present invention is to provide a wireless density transmitter and system with internal and external dual antennas, so as to solve the problems in the prior art of gas density monitoring equipment such as large wiring construction workload when set up on site, the need for cable protection, and the inability to adapt to the on-site installation environment resulting in weak signal transmission.

[0006] In order to solve the above technical problems, the utility model provides a wireless density transmitter with internal and external dual antennas, comprising:

[0007] A housing, the housing comprising an inner cavity for accommodating various electrical components;

[0008] An air circuit connection seat, which is arranged at one end of the housing and is used to connect the air circuit to be tested;

[0009] A sensor assembly, the sensor assembly is arranged in the gas circuit connection seat, and is used to obtain the gas circuit signal data to be measured;

[0010] a control component, the control component being disposed in the inner cavity and connected to the sensor component;

[0011] The antenna assembly includes an antenna cover, a built-in antenna and an external antenna. The antenna cover is covered at the other end of the shell, the built-in antenna is arranged in the antenna cover and connected to the control assembly, and the external antenna is detachably connected to the control assembly via a connector arranged on the outside of the antenna cover. The control assembly can switch the built-in antenna and the external antenna as needed to transmit the gas path signal data to be measured obtained by the sensor assembly.

[0012] As a more preferred method, the control component includes a control main board, and the control main board is provided with a radio frequency switch connected to the internal antenna and the external antenna. The wireless density transmitter uses the radio frequency switch to switch the internal antenna and the external antenna, and uses the radio frequency switch to switch the internal antenna and the external antenna. The structure is simple and easy to use.

[0013] As a more preferred embodiment, the sensor component includes a pressure sensor and a temperature sensor, which are respectively used to obtain the pressure data and temperature data of the gas circuit to be tested. The control component can convert the pressure data into a standard pressure value of twenty degrees Celsius through calculation based on the obtained pressure data and temperature data of the gas circuit to be tested, and then transmit it through the antenna component.

[0014] As a more preferred embodiment, the wireless density transmitter also includes a battery, and the battery is arranged in the inner cavity. The battery can satisfy the utility model that the wireless density transmitter can be used independently without a power supply cable, thereby enriching the usage scenarios and reducing the setting of power supply cables, which is simple and convenient.

[0015] As a more preferred embodiment, one end of the shell is provided with an internal thread, one end of the gas path connection seat is provided with an external thread matching the internal thread, and the gas path connection seat is connected to the shell through a threaded connection.

[0016] As a more preferred method, a first sealing ring is further provided between the gas path connecting seat and the shell to prevent rainwater from penetrating into the inner cavity and damaging electrical components, thereby further increasing the waterproof performance of the wireless density transmitter of the utility model, protecting the internal structure and circuit, and improving the service life.

[0017] As a more preferred manner, the other end of the shell and the open end of the antenna cover are provided with mutually matching assembly steps, and the antenna cover and the shell are engaged through the assembly steps. In this way, the assembly and disassembly of the antenna cover and the shell are faster and more convenient for later maintenance.

[0018] As a more preferred embodiment, a second sealing ring is further provided between the antenna cover and the shell to prevent rainwater from penetrating into the inner cavity and damaging electrical components, thereby further increasing the waterproof performance of the wireless density transmitter of the utility model, protecting the internal structure and circuit, and improving the service life.

[0019] As a more preferred embodiment, the inner side wall at the other end of the shell is provided with a limiting protrusion for limiting the control main board, and the shell is also provided with an elastic member abutting against the control main board, and the elastic member applies an elastic force to the control main board toward the other end of the shell so that the control main board abuts against the limiting protrusion; when the wireless density transmitter is hit or falls by external force, the elastic member can play a buffering role and extend the service life.

[0020] As a more preferred method, a display screen connected to the control component is provided at the top of the antenna housing to display the current gas path signal data to be tested in real time, which is more convenient for on-site real-time debugging. In order to solve the above problems, the utility model also provides a wireless density transmission system, including:

[0021] The wireless density transmitter with internal and external dual antennas as mentioned above;

[0022] A signal receiving device is used to receive the gas path signal data to be measured transmitted by the wireless density transmitter with internal and external dual antennas.

[0023] As described above, the wireless density transmitter and system with internal and external dual antennas of the utility model have the following beneficial effects: when the wireless density transmitter with internal and external dual antennas of the utility model is arranged on site, the gas path connection seat is first connected to the gas path to be measured, and then the internal antenna or the external antenna can be adaptively selected according to the actual situation on site. For example, when the installation space on site is unobstructed, only the built-in antenna of the body can be used for signal output. When there are shielding or signal blocking obstacles on site, the external antenna can be connected. The external antenna can be placed in an unobstructed position according to the actual situation on site to facilitate stable signal transmission. The two antennas can be switched freely through the control component, which greatly utilizes various usage environments on site and reduces the requirements for the on-site installation environment. At the same time, the wireless density transmitter of the utility model is compact, light, and low in power consumption, making it more convenient for on-site monitoring of the gas path to be tested; further, when one of the built-in antenna and the external antenna fails, the other antenna can also temporarily play the role of signal transmission, thereby improving safety redundancy; the utility model provides a wireless density transmission system, including the above-mentioned wireless density transmitter, and a signal receiving device that can remotely receive the signal data of the gas path to be tested, which facilitates signal transmission. In summary, the wireless density transmitter and system with internal and external dual antennas of the utility model transmit wireless signals through the built-in antenna and the external antenna that can be switched freely, which solves the problems in the prior art that the gas density monitoring equipment has a large wiring construction workload when set up on site, requires cable protection, and cannot be applied to the on-site installation environment, resulting in weak signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of a wireless density transmitter with internal and external dual antennas of the present invention;

[0025] Figure 2 Display as Figure 1 A partial enlarged view of the middle area B;

[0026] Figure 3 Shown is a schematic diagram of a wireless density transmission system with internal and external dual antennas of the present invention;

[0027] Figure 4 Shown is a schematic diagram of the control mainboard of the wireless density transmitter with internal and external dual antennas of the present invention.

[0028] Component number description

[0029] 1 Housing

[0030] 11 Assembly steps

[0031] 12 Limiting protrusion

[0032] 13 First sealing ring

[0033] 14 Second sealing ring

[0034] 2 Gas connection socket

[0035] 3. Pressure sensor

[0036] 4 Temperature Sensor

[0037] 5. Batteries

[0038] 6 Control motherboard

[0039] 7 Motherboard bracket

[0040] 8 Antenna assembly

[0041] 81 Internal antenna

[0042] 82 External Antenna

[0043] 821 External antenna body

[0044] 822 signal cable

[0045] 823 SMA male connector

[0046] 83 Radome

[0047] 831 Display

[0048] 832 SMA female

[0049] 833 Third sealing ring

[0050] 9 Elastic parts

[0051] 10 Signal receiving equipment

[0052] 101 Receiving Antenna

[0053] 102 Data processing equipment DETAILED DESCRIPTION

[0054] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0055] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "hold" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0058] like Figures 1 to 4 As shown, the utility model provides a wireless density transmitter with internal and external dual antennas, comprising:

[0059] A housing 1, wherein the housing 1 includes an inner cavity for accommodating various electrical components;

[0060] An air circuit connection seat 2, the air circuit connection seat 2 is arranged at one end of the housing 1, and is used to connect the air circuit to be tested;

[0061] A sensor assembly, the sensor assembly is arranged in the gas circuit connection seat 2, and is used to obtain the gas circuit signal data to be measured;

[0062] a control component, the control component being disposed in the inner cavity and connected to the sensor component;

[0063] The antenna assembly 8 includes an antenna cover 83, a built-in antenna 81 and an external antenna 82. The antenna cover 83 is covered at the other end of the shell 1, the built-in antenna 81 is arranged in the antenna cover 83 and connected to the control assembly, and the external antenna 82 is detachably connected to the control assembly via a connector arranged on the outside of the antenna cover 83. The control assembly can switch the built-in antenna 81 and the external antenna 82 as needed to transmit the gas path signal data to be measured obtained by the sensor assembly.

[0064] In order to better introduce the wireless density transmitter with internal and external dual antennas of the present invention, the following is explained in combination with specific applications: when the wireless density transmitter with internal and external dual antennas of the present invention is arranged on site, first connect the gas path connection seat 2 to the gas path to be measured, and then you can adaptively choose to use the built-in antenna 81 or the external antenna 82 according to the actual situation on site. For example, when there is no obstruction in the on-site installation space, only the built-in antenna 81 of the main body can be used for signal output. When there are shielding or signal blocking obstacles on site, the external antenna 82 can be connected. The external antenna 82 can be placed in an unobstructed position according to the actual situation on site to facilitate stable signal transmission. The two antennas can be freely switched through the control component, which greatly utilizes various usage environments on site and reduces the requirements for the on-site installation environment. At the same time, the wireless density transmitter of the present invention is small in size, light in weight, and low in power consumption, which is more convenient for on-site monitoring of the gas path to be measured; further, when one of the built-in antenna 81 and the external antenna 82 fails, the other antenna can also temporarily play the role of signal transmission, thereby improving safety redundancy.

[0065] In this embodiment, if Figure 1 to Figure 2As shown, the connector arranged on the outside of the antenna cover 83 adopts an SMA female connector 832, and the external antenna 82 includes a signal connecting line 822, one end of the signal connecting line 822 is connected to the external antenna body 821, and the other end is provided with an SMA male connector 823 adapted to the SMA female connector 832, and the SMA male connector 823 is connected to the SMA female connector 832 to connect the external antenna 82 to the control component; further, in this embodiment, a third sealing ring 833 is provided between the SMA female connector 832 and the antenna cover 83, which improves the waterproof performance of the wireless density transmitter of the utility model, protects the internal structure and circuit, and increases the service life.

[0066] In this embodiment, if Figure 1 to Figure 2 As shown, the control component includes a control main board 6, on which a radio frequency switch connected to the internal antenna 81 and the external antenna 82 is provided. The wireless density transmitter uses the radio frequency switch to switch the internal antenna 81 and the external antenna 82, and uses the radio frequency switch to switch the internal antenna 81 and the external antenna 82. The structure is simple and easy to use.

[0067] In this embodiment, if Figure 1 to Figure 2 As shown, the sensor component includes a pressure sensor 3 and a temperature sensor 4, which are respectively used to obtain the pressure data and temperature data of the gas circuit to be tested. The control component can convert the pressure data into a standard pressure value of twenty degrees Celsius through calculation based on the obtained pressure data and temperature data of the gas circuit to be tested, and then transmit it through the antenna component 8.

[0068] In this embodiment, if Figure 1 to Figure 2 As shown, the wireless density transmitter also includes a battery 5, and the battery 5 is arranged in the inner cavity. The battery 5 can meet the requirement that the wireless density transmitter of the utility model can be used independently without a power supply cable, thereby enriching the use scenarios and reducing the setting of power supply cables, which is simple and convenient.

[0069] In this embodiment, if Figure 1 to Figure 2 As shown, one end of the shell 1 is provided with an internal thread, and one end of the gas circuit connecting seat 2 is provided with an external thread adapted to the internal thread, and the gas circuit connecting seat 2 is connected to the shell 1 through a threaded connection; further, in this embodiment, the other end of the gas circuit connecting seat 2 is also provided with an external thread for connecting to the gas circuit to be tested.

[0070] In this embodiment, if Figure 1 As shown, a first sealing ring 13 is further provided between the gas path connection base 2 and the housing 1, which further increases the waterproof performance of the wireless density transmitter of the utility model, protects the internal structure and circuit, and improves the service life.

[0071] In this embodiment, if Figure 1 to Figure 2 As shown, the other end of the shell 1 and the open end of the antenna cover 83 are provided with mutually adapted assembly steps 11, and the antenna cover 83 and the shell 1 are engaged through the assembly steps 11, so that the assembly and disassembly of the antenna cover 83 and the shell 1 are faster and more convenient for later maintenance.

[0072] In this embodiment, if Figure 1 As shown, a second sealing ring 14 is further provided between the antenna cover 83 and the housing 1, which further increases the waterproof performance of the wireless density transmitter of the utility model, protects the internal structure and circuit, and increases the service life.

[0073] In this embodiment, if Figure 1 As shown, the inner wall of the other end of the shell 1 is provided with a limiting protrusion 12 for limiting the control main board 6, and the shell 1 is also provided with an elastic member 9 abutting against the control main board 6, and the elastic member 9 applies an elastic force toward the other end of the shell 1 to the control main board 6 so that the control main board 6 abuts against the limiting protrusion 12; when the wireless density transmitter is hit or falls by external force, the elastic member 9 can play a buffering role and extend the service life; further, in this embodiment, a main board bracket 7 is also provided in the shell 1, and the control main board 6 is arranged on the main board bracket 7, one end of the elastic member 9 is connected to the main board bracket 7, and the other end abuts against the battery 5; further, in this embodiment, the elastic member 9 adopts a spring, and the spring material is simple and easy to obtain, which can reduce the cost and facilitate installation.

[0074] In this embodiment, if Figure 1 As shown, a display screen 831 connected to the control assembly is provided at the top of the antenna cover 83 to display the current gas path signal data to be tested in real time, which is more convenient for on-site real-time debugging.

[0075] In order to solve the above problems, Figure 3 As shown, the utility model also provides a wireless density transmission system, comprising:

[0076] The wireless density transmitter with internal and external dual antennas as mentioned above;

[0077] The signal receiving device 10 is used to receive the gas path signal data to be measured transmitted by the wireless density transmitter with internal and external dual antennas.

[0078] The utility model provides a wireless density transmitter system, which comprises the wireless density transmitter and a signal receiving device 10 capable of remotely receiving the signal data of the gas path to be measured, thus facilitating signal transmission.

[0079] Furthermore, in this embodiment, the signal receiving device 10 includes a receiving antenna 101 and a data processing device 102 connected to the receiving antenna 101. The data processing device 102 can be a computer, and the computer processes and displays the received gas path signal data in real time.

[0080] Furthermore, in this embodiment, if Figure 4 As shown, the control mainboard 11 includes a control circuit, a detection circuit and a radio frequency switch. The control mainboard 1 is connected to the battery 5, and the battery provides power for the control mainboard 1; the detection circuit is respectively connected to the temperature sensor 4 and the pressure sensor 3 to obtain the temperature data information and the pressure data information of the gas circuit to be tested; the radio frequency switch is respectively connected to the built-in antenna 81 and the external antenna 82. The control mainboard 1 converts the pressure data into a standard pressure value of twenty degrees Celsius through calculation according to the obtained pressure data and temperature data of the gas circuit to be tested, and then switches the built-in antenna 81 and the external antenna 82 as needed to transmit the pressure data to the signal receiving device 10. The signal receiving device 10 processes and displays the received gas circuit signal data in real time.

[0081] In summary, the wireless density transmitter and system with internal and external dual antennas of the utility model transmits wireless signals through the internal antenna 81 and the external antenna 82 that can be freely switched, which solves the problems in the prior art that the gas density monitoring equipment has a large wiring construction workload when it is set up on site, requires cable protection, and is not suitable for on-site installation, resulting in weak signal transmission due to environmental shielding. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0082] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A wireless density transmitter with internal and external dual antennas, characterized in that: include: A housing (1), the housing (1) comprising an inner cavity for accommodating various electrical components; An air circuit connection seat (2), the air circuit connection seat (2) being arranged at one end of the housing (1) and being used for connecting to the air circuit to be tested; A sensor component, the sensor component is arranged in the gas path connecting seat (2) and is used to obtain gas path signal data to be measured; a control component, the control component being disposed in the inner cavity and connected to the sensor component; The antenna assembly (8) comprises an antenna cover (83), an internal antenna (81) and an external antenna (82), wherein the antenna cover (83) is covered at the other end of the housing (1), the internal antenna (81) is arranged inside and in the antenna cover (83) and is connected to the control assembly, and the external antenna (82) is detachably connected to the control assembly via a connector arranged outside the antenna cover (83), and the control assembly can switch between the internal antenna (81) and the external antenna (82) as needed to transmit the gas path signal data to be measured acquired by the sensor assembly.

2. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: The control component comprises a control mainboard (6), on which a radio frequency switch connected to the built-in antenna (81) and the external antenna (82) is arranged, and the wireless density transmitter uses the radio frequency switch to switch between the built-in antenna (81) and the external antenna (82).

3. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: The sensor assembly comprises a pressure sensor (3) and a temperature sensor (4), which are used to obtain pressure data and temperature data of the gas path to be measured respectively.

4. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: The wireless density transmitter also includes a battery (5), and the battery (5) is arranged in the inner cavity.

5. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: One end of the shell (1) is provided with an internal thread, and one end of the gas path connection seat (2) is provided with an external thread matching the internal thread. The gas path connection seat (2) is connected to the shell (1) via a threaded connection.

6. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: A first sealing ring (13) is also provided between the gas path connection seat (2) and the housing (1) to prevent rainwater from penetrating into the inner cavity and damaging the electrical components.

7. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: The other end of the shell (1) and the open end of the antenna cover (83) are both provided with mutually matching assembly steps (11), and the antenna cover (83) and the shell (1) are engaged via the assembly steps (11).

8. The wireless density transmitter with internal and external dual antennas according to claim 1 is characterized in that: A second sealing ring (14) is also provided between the antenna cover (83) and the housing (1) to prevent rainwater from penetrating into the inner cavity and damaging electrical components.

9. The wireless density transmitter with internal and external dual antennas according to claim 2 is characterized in that: The inner side wall of the other end of the shell (1) is provided with a limiting protrusion (12) for limiting the control main board (6), and the shell (1) is also provided with an elastic member (9) abutting against the control main board (6), and the elastic member (9) applies an elastic force to the control main board (6) towards the other end of the shell (1), so that the control main board (6) abuts against the limiting protrusion (12).

10. The wireless density transmitter with internal and external dual antennas according to claim 1, characterized in that: A display screen (831) connected to the control component is provided at the top of the antenna housing (83) for displaying the current gas path signal data to be tested in real time.

11. A wireless density transmission system, characterized in that: include: The wireless density transmitter with internal and external dual antennas as described in any one of claims 1 to 10; A signal receiving device (10) is used to receive the gas path signal data to be measured transmitted by the wireless density transmitter with internal and external dual antennas.

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