CN217523142U - Signal shielding device and signal shielding grounding system - Google Patents
Signal shielding device and signal shielding grounding system Download PDFInfo
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- CN217523142U CN217523142U CN202221248618.6U CN202221248618U CN217523142U CN 217523142 U CN217523142 U CN 217523142U CN 202221248618 U CN202221248618 U CN 202221248618U CN 217523142 U CN217523142 U CN 217523142U
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Abstract
The utility model relates to a signal shielding device and signal shielding grounding system. The system comprises: an electrical device, one end of which is grounded, for generating a voltage signal; the signal equipment is electrically connected with the electrical equipment and used for generating a semaphore according to the voltage signal; and the signal shielding device is electrically connected with the signal equipment and is used for shielding the external interference. By adopting the system, an external magnetic field, high-frequency radiation and voltage interference can be effectively isolated in the working process of electrical equipment, so that the signal analog quantity is more accurate, large-amplitude jumping cannot occur, and the error rate is reduced.
Description
Technical Field
The utility model relates to a signal shielding technical field especially relates to a signal shielding device and signal shielding grounding system.
Background
When the electrical equipment is mainly a voltage signal, the voltage is relatively low and within 0V-10V, the electrical equipment is easily influenced by the voltage, the current and the high-frequency radiation, so that the signal-to-noise ratio of the signal is reduced, the signal ground can drift, and the measured value of the signal can be inaccurate or wrong.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a signal shielding device and a signal shielding grounding system for shielding various external interferences generated during the operation of electrical equipment.
In order to achieve the above and other objects, an aspect of the present invention provides a signal shielding apparatus for shielding external interference generated when an electrical device is operated, the apparatus comprising:
a signal line;
a tamper resistant metallic apparatus configured to: one end of the signal line is connected with the signal line, and the other end of the signal line is grounded and used for shielding the external interference.
In one embodiment, the tamper resistant metal device comprises a dense metal wire.
In the signal shielding device of the above embodiment, interference of an electromagnetic field and high-frequency radiation generated by current can be effectively isolated by adding the anti-interference metal device on the signal line, and further radiation is effectively blocked by the dense metal wire.
Another aspect of the utility model provides a signal shielding ground system for the external disturbance that the shielding electrical equipment during operation produced, the system include:
an electrical device having one end grounded for generating a voltage signal;
the signal equipment is electrically connected with the electrical equipment and is used for generating a semaphore according to the voltage signal;
and the signal shielding device is electrically connected with the signal equipment and is used for shielding the external interference.
In the signal shielding grounding system of the above embodiment, since the voltage value of the voltage signal generated by the electrical device is low, the external interference is easily received, so that the measured value of the signal is inaccurate or wrong, the signal shielding device can effectively shield the external interference, the signal analog quantity is more accurate, large-amplitude jitter is avoided, and the error rate is reduced.
In one embodiment, the signal equipment comprises a signal generator and a signal conversion device, and the system further comprises:
the signal generator is electrically connected with the electrical equipment and used for generating an analog signal according to the voltage signal;
the signal conversion device is electrically connected with the signal generator and is used for generating a digital signal according to the analog signal;
a first signal shielding device configured to: the first end is electrically connected with the signal generator, the second end is electrically connected with the signal conversion device, and the third end is grounded and used for shielding the external interference.
In one embodiment, the external interference includes at least one of high frequency radiation, current-generated electromagnetic field interference, and high power source-generated voltage interference.
In one embodiment, the signal shielding apparatus includes:
a signal line;
a tamper resistant metallic device configured to: one end of the grounding wire is connected with the signal wire, and the other end of the grounding wire is grounded and is used for shielding the electromagnetic field interference generated by the high-frequency radiation and/or the current.
In one embodiment, the tamper resistant metal device comprises a dense metal wire.
In one embodiment, the system further comprises:
and the high-power supply is electrically connected with the grounding end of the electrical equipment and is used for providing the electric drive required by the electrical equipment.
In one embodiment, a distance between the ground terminal of the high power supply and the ground terminal of the signal shielding device is greater than or equal to a first preset value.
In one embodiment, the first preset value is 1.5 m to 2.5 m.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a signal shielding device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal shielding grounding system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a signal shielding grounding system according to another embodiment of the present invention.
Description of reference numerals:
10. an electrical device; 20. a signaling device; 21. a signal generator; 22. a signal conversion device; 30. a signal shielding device; 31. a signal line; 32. an anti-interference metal device; 301. a first signal shielding means.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," or "having," and the like, specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
As mentioned in the background, during the operation of the electrical equipment, there are high and low voltages, high and low currents, and high frequency radiation, which all cause interference to the transmission of signals in the equipment, especially analog signals, and when the electrical equipment is mainly voltage signals, the voltage is low, and within 0V-10V, the electrical equipment is easily affected by the voltage, the current, and the high frequency radiation, so that the signal-to-noise ratio of the signals is reduced, the signal ground is shifted, and the measurement values of the signals are inaccurate or wrong. The common method is to connect signal ground, and the signal ground is used to reduce external interference. The existing signal grounding is only to add a ground wire outside a signal wire, the ground wire is not subjected to isolation processing, the ground wire can process the influence of an electromagnetic field generated by most of surrounding current, but cannot shield the interference caused by high-frequency radiation and the voltage interference caused by the ground wire of a high-power supply, an analog quantity signal can jump seriously, and the signal value cannot be accurately judged to be wrong.
In view of the above, referring to fig. 1, in one embodiment of the present application, a signal shielding device 30 is provided for shielding external interference generated during operation of an electrical apparatus 10, the device includes a signal line 31 and an anti-interference metal device 32; a tamper-resistant metallic apparatus 32 configured to: one end of the ground is connected to the signal line 31, and the other end is grounded for shielding the external interference.
In particular, the tamper-resistant metal means 32 comprise a dense metal wire. A magnetic anti-interference metal device 32 is added on the signal wire 31, the device can isolate an external magnetic field and high-frequency radiation, and the device is independently grounded to conduct away current generated by the external magnetic field so as to avoid interference on signals; the high-frequency radiation generated by the electrical equipment 10 is within 1MHz, and the anti-interference metal device 32 is composed of compact metal wires and can effectively cut off the radiation.
Referring to fig. 2, a signal shielding grounding system for shielding external interference generated by an electrical device 10 during operation is provided in an embodiment of the present application, the system includes the electrical device 10, a signal device 20 and a signal shielding device 30; an electrical device 10, one end of which is grounded, for generating a voltage signal; a signal device 20 electrically connected to the electric device 10 for generating a signal amount from a voltage signal; and a signal shielding device 30 electrically connected to the signal device 20 for shielding the external interference.
Specifically, the system further includes a high power source electrically connected to the ground of the electrical device 10 for providing the electrical power driving required by the electrical device 10. The reason for connecting the ground terminal of the high power supply to the ground terminal of the electrical device 10 is to ensure that the ground of the electrical device 10 and the ground of the power supply are equipotential, so that a voltage difference is formed when the potentials are different, and the higher side affects the signal feedback of the lower side. The external interference includes at least one of high frequency radiation, electromagnetic field interference generated by current, and voltage interference generated by a high power supply. The distance between the ground terminal of the high power supply and the ground terminal of the signal shielding device 30 is greater than or equal to a first preset value, and the first preset value is 1.5 m to 2.5 m. For example, in some embodiments, the first preset value may be 1.5 meters, 2 meters, 2.5 meters. The generation of voltage interference can be avoided by separating the ground terminal of the high power supply from the ground terminal of the signal line 31.
Specifically, the signal shielding device 30 includes a signal line 31 and an anti-interference metal device 32; a tamper-resistant metallic apparatus 32 configured to: one end of the ground is connected to the signal line 31, and the other end is grounded, so as to shield the electromagnetic field interference generated by the high-frequency radiation and/or the current. The tamper resistant metal means 32 comprises a dense metal wire. The signal line 31 is connected with the signal equipment 20, an external magnetic field and high-frequency radiation can be isolated by adding the magnetic anti-interference metal device 32 on the signal line 31, and the device is independently grounded to conduct current generated by the external magnetic field, so that interference on signals is avoided; the high-frequency radiation generated by the electrical equipment 10 is within 1MHz, and the anti-interference metal device 32 is composed of compact metal wires and can effectively cut off the radiation.
Referring to fig. 3, in one embodiment, the signal apparatus 20 includes a signal generator 21 and a signal conversion device 22, and the system further includes the signal generator 21, the signal conversion device 22 and a first signal shielding device 301; a signal generator 21 electrically connected to the electrical device 10 for generating an analog signal according to the voltage signal; a signal conversion device 22 electrically connected to the signal generator 21 for generating a digital signal according to the analog signal; a first signal shielding means 301 configured to: the first end is electrically connected with the signal generator 21, the second end is electrically connected with the signal conversion device 22, and the third end is grounded and used for shielding the external interference.
Specifically, the first signal shielding device 301 includes a signal line 31 and an anti-interference metal device 32; a tamper-resistant metallic apparatus 32 configured to: one end of the ground is connected to the signal line 31, and the other end is grounded, so as to shield the electromagnetic field interference generated by the high frequency radiation and/or the current. The tamper resistant metal means 32 comprises a dense metal wire. The signal line 31 is connected between the signal generator 21 and the signal conversion device 22, the external magnetic field and high-frequency radiation can be isolated by adding the magnetic anti-interference metal device 32 on the signal line 31, and the device is independently grounded to conduct away the current generated by the external magnetic field and avoid the interference on the signal; the high-frequency radiation generated by the electrical equipment 10 is within 1MHz, and the anti-interference metal device 32 is composed of compact metal wires and can effectively cut off the radiation.
In the signal shielding device and the signal shielding grounding system, the influence of an electromagnetic field generated by most of surrounding current is removed by grounding the signal wire, an external magnetic field and high-frequency radiation are removed by connecting an anti-interference metal device outside the signal wire, and finally, the voltage interference caused by the high-power supply can be avoided by keeping the grounding end of the high-power supply away from the grounding end of the signal.
In the description herein, references to "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A signal shielding device for shielding external interference generated during operation of an electrical apparatus, the device comprising:
a signal line;
a tamper resistant metallic device configured to: one end of the signal line is connected with the signal line, and the other end of the signal line is grounded and used for shielding the external interference.
2. The signal shielding device of claim 1, wherein the tamper resistant metal device comprises a dense metal wire.
3. A signal shielding grounding system for shielding external interference generated during operation of electrical equipment, said system comprising:
an electrical device, one end of which is grounded, for generating a voltage signal;
the signal equipment is electrically connected with the electrical equipment and used for generating a semaphore according to the voltage signal;
and the signal shielding device is electrically connected with the signal equipment and is used for shielding the external interference.
4. The signal-shielded grounding system of claim 3, wherein the signal device includes a signal generator and a signal conversion device, the system further comprising:
the signal generator is electrically connected with the electrical equipment and used for generating an analog signal according to the voltage signal;
the signal conversion device is electrically connected with the signal generator and is used for generating a digital signal according to the analog signal;
a first signal shielding device configured to: the first end is electrically connected with the signal generator, the second end is electrically connected with the signal conversion device, and the third end is grounded and used for shielding the external interference.
5. The signal-shielded grounding system of claim 3, wherein the external interference includes at least one of high-frequency radiation, current-generated electromagnetic field interference, and high-power-generated voltage interference.
6. The signal-shielded grounding system of claim 5, wherein the signal shielding device comprises:
a signal line;
a tamper resistant metallic device configured to: one end of the grounding wire is connected with the signal wire, and the other end of the grounding wire is grounded and used for shielding the electromagnetic field interference generated by the high-frequency radiation and/or the current.
7. The signal-shielded grounding system of claim 6, wherein the tamper-resistant metal device comprises a dense metal wire.
8. The signal-shield grounding system of any one of claims 3-7, wherein the system further comprises:
and the high-power supply is electrically connected with the grounding end of the electrical equipment and is used for providing the electric drive required by the electrical equipment.
9. The signal-shielded grounding system of claim 8, wherein a distance between the ground terminal of the high-power supply and the ground terminal of the signal shielding device is greater than or equal to a first preset value.
10. The signal-shielded grounding system of claim 9, wherein the first predetermined value is 1.5-2.5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221248618.6U CN217523142U (en) | 2022-05-20 | 2022-05-20 | Signal shielding device and signal shielding grounding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221248618.6U CN217523142U (en) | 2022-05-20 | 2022-05-20 | Signal shielding device and signal shielding grounding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217523142U true CN217523142U (en) | 2022-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221248618.6U Active CN217523142U (en) | 2022-05-20 | 2022-05-20 | Signal shielding device and signal shielding grounding system |
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| Country | Link |
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| CN (1) | CN217523142U (en) |
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- 2022-05-20 CN CN202221248618.6U patent/CN217523142U/en active Active
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Address after: 523835 Room 401 and 501, building 5, No.2 mashanmiao Road, baihuadong, Dalingshan Town, Dongguan City, Guangdong Province Patentee after: Guangdong Huasheng Nanotechnology Co.,Ltd. Address before: 523835 Room 401 and 501, building 5, No.2 mashanmiao Road, baihuadong, Dalingshan Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN HUASHENG VACUUM PLATED FILM TECHNOLOGY CO.,LTD. |
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