A signal sampling device

Abstract

The present invention relates to the technical field of signal devices, and discloses a signal sampling device, including a chassis, a sampling tube fixedly connected to the top of the chassis, a telescopic column fixedly connected to the bottom of the inner wall of the sampling tube, a sampling disk slidably connected to the surface of the telescopic column, a connecting column fixedly connected to the top of the sampling tube, and an absorption component, including a mounting box fixedly connected to the top slot, an absorption tube fixedly connected to both sides of the inner wall of the mounting box, a slide fixedly connected to the bottom of the inner wall of the mounting box, and a placement block slidably connected to the top of the slide via a slider. By providing the absorption component, when the rolling disk rotates, the contact block at the bottom of the rolling disk will contact the contact arm, thereby eliminating the noise contained in the mounting box, and when the rolling disk contacts the inner wall of the absorption tube, the signal in the absorption tube is absorbed by the rolling disk, so that a layer can be formed between the signal and the noise, thereby avoiding the influence of the noise on the signal.

Description

Technical Field

[0001] The present invention relates to the technical field of signal devices, and in particular to a signal sampling device. Background Art

[0002] Digital signals refer to signals that are discrete and discontinuous in value. Various physical quantities in actual production and life, such as images taken by cameras, pressure, flow rate, speed, humidity, etc. recorded in the workshop control room, are all analog signals. Digital signals are formed through sampling, quantization and encoding on the basis of analog signals.

[0003] The patent application with application number CN202123392165.2 discloses a signal sampling device, including a sampling unit and an isolation unit, wherein the sampling unit samples an I / O input signal through the isolation unit, and the isolation unit includes a first optocoupler and a second optocoupler, wherein the input ends of the first optocoupler and the second optocoupler are connected in series in the same direction, and the output ends of the first optocoupler and the second optocoupler are connected in reverse parallel and then in parallel with the input end of the sampling unit.

[0004] However, this patent also has the following shortcomings, that is, when using a sampling device to sample a signal, it is necessary to consider the impact of the external environment on signal reception. When the staff is in a noisy external environment or a place with noise pollution, the signal sampling device will cause the signal reception frequency to become disordered when receiving the signal. In response to this situation, a signal sampling device is specially proposed. Summary of the invention

[0005] The object of the present invention is to provide a signal sampling device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a signal sampling device, comprising a chassis, a sampling tube is fixedly connected to the top of the chassis, a telescopic column is fixedly connected to the bottom of the inner wall of the sampling tube, a sampling plate is slidably connected to the surface of the telescopic column, and a connecting column is fixedly connected to the top of the sampling tube, and further comprising:

[0007] The stretching mechanism comprises an absorption plate fixedly connected to the top of the connecting column, a limiting mechanism is arranged on the inner wall of the absorption plate, an air pressure tube is fixedly connected in the top slot of the absorption plate, a down-pressure tube is fixedly connected to the top of the air pressure tube, an absorption ring is fixedly connected to the bottom of the inner wall of the down-pressure tube, an absorption assembly is arranged at the top slot of the absorption plate, and the rolling plate can be pulled through the absorption ring on the inner wall of the down-pressure tube by pulling upwards.

[0008] The absorption component includes an installation box fixedly connected to the top slot hole, absorption tubes are fixedly connected to the inner wall of the installation box on both sides, a slide is fixedly connected to the inner wall bottom of the installation box, the top of the slide is slidably connected to a placement block through a slider, the top of the placement block is rotatably connected to a rolling disk through a rotating shaft, the bottom of the rolling disk is fixedly connected to a contact block, and contact arms are fixedly connected to the two sides of the slide, one end of the absorption ring away from the inner wall of the lower pressure tube is fixedly connected to the top of the rolling disk, and the contact block at the bottom of the rolling disk will contact the contact arm when the rolling disk rotates.

[0009] According to the above technical solution, the limiting mechanism includes a fan-shaped plate, which is fixedly connected to the bottom of the inner wall of the absorption disk, and pushing mechanisms are arranged on both sides of the inner wall of the fan-shaped plate. A clamping block is fixedly connected to the surface of the fan-shaped plate, and both sides of the inner wall of the clamping block are rotatably connected to a limiting membrane through a rotating shaft. The bottom of the limiting membrane is fixedly connected to the limiting block, and a reflective component is arranged at the bottom of the limiting membrane, and the pushing ring will squeeze the top of the limiting membrane.

[0010] According to the above technical solution, the pushing mechanism includes a pushing rod, both ends of which are slidably connected to both sides of the inner wall of the fan-shaped plate, one end of the pushing rod penetrates the surface of the fan-shaped plate, and a noise reduction component is provided at the end of the pushing rod away from the inner wall of the fan-shaped plate. A contact tube is fixedly connected to the surface of the pushing rod, an extrusion bag is fixedly connected to the top of the contact tube, a pushing ring is fixedly connected to the top of the contact tube, the extrusion bag is fixedly connected to the surface of the pushing ring, and an end of the pushing ring away from the extrusion bag is fixedly connected to the top of the limiting membrane. When the extrusion bag is squeezed, the internal air pressure will be discharged into the interior of the limiting membrane through the pushing ring.

[0011] According to the above technical solution, the reflective assembly includes a covering film, which is fixedly connected to the bottom of the limiting film, the inner wall of the covering film is rotatably connected to a swing rod through a rotating shaft, the surface of the covering film is fixedly connected to a reflective ring, the bottom of the inner wall of the reflective ring is fixedly connected to a push-pull strip, the end of the push-pull strip away from the inner wall of the reflective ring is fixedly connected to an impact tube, and the impact tube pops out to the outside through the push-pull strip.

[0012] According to the above technical solution, the noise reduction component includes a pad, which is fixedly connected to one end of the push rod, and absorption rods are fixedly connected to both sides of the pad, and a dissipation film is fixedly connected to the surface of the pad, and the inner wall of the dissipation film is slidably connected to a rolling ring through a slider, and the inner wall of the rolling ring is fixedly connected to a radiation tube, and a pulling bar is slidably connected to the surface groove of the pad, and the pulling bar is slidably connected to the surface of the rolling ring, and the rolling ring is driven to rotate through the pulling bar.

[0013] According to the above technical solution, the number of the absorption rods is set to two, and the two absorption rods are symmetrically installed on both sides of the pad with the center line of the pad as the symmetry axis, and the absorption rods absorb external signals from the outside.

[0014] According to the above technical solution, the number of the covering films is set to two, and the two covering films are symmetrically installed at the bottom of the limiting film with the center line of the limiting film as the symmetry axis, and the absorption rod is wrapped by the covering films on both sides of the limiting film.

[0015] Compared with the prior art, the present invention provides a signal sampling device, which has the following beneficial effects:

[0016] 1. The present invention is provided with an absorption component. When the rolling disk rotates, the contact block at the bottom thereof contacts the contact arm, thereby eliminating the noise contained in the installation box. When the rolling disk contacts the inner wall of the absorption tube, the signal in the absorption tube is absorbed by the rolling disk, so that a layer can be formed between the signal and the noise, thereby avoiding the influence of the noise on the signal.

[0017] 2. The present invention provides a limiting mechanism. When the extrusion bag is squeezed, the internal air pressure will be discharged into the interior of the limiting film through the pushing ring. The air pressure will cause the covering film at the bottom to expand and contract outward. The covering film on both sides of the limiting film will wrap the absorption rod, so that the external signal transmission can be protected while isolating noise pollution.

[0018] 3. The present invention is provided with a reflection component. When the impact tube impacts the inner wall of the reflection ring, the noise flowing into the coating film will be absorbed into the interior through the impact tube. When the impact tube impacts the inner wall of the reflection ring, the noise in the impact tube will be reflected outward through the surface slots of the reflection ring, thereby preventing external noise from continuing to interfere with the signal sampling device.

[0019] 4. The present invention is provided with a pushing mechanism, which drives the rolling ring to rotate by pulling the bar. When the rolling ring rotates, the radiation tube on its surface will continuously contact and squeeze the surface of the dissipative film, and the noise generated in the outside world will be transmitted to the inside of the dissipative film. When the radiation tube is in continuous contact with the surface of the dissipative film, a large amount of noise absorbed when transmitting the signal will be eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2It is a schematic diagram of the top view of the stretching mechanism of the present invention;

[0023] Figure 3 is a schematic diagram of the internal cross-sectional structure of the absorption assembly of the present invention;

[0024] Figure 4 1 is a schematic diagram of the top view of the limiting mechanism of the present invention;

[0025] Figure 5 is a front view structural schematic diagram of the reflective assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the top view of the driving mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the internal cross-sectional structure of the noise reduction component of the present invention.

[0028] In the figure: 1, chassis; 2, sampling tube; 3, telescopic column; 4, sampling plate; 5, connecting column; 6, stretching mechanism; 601, absorption plate; 602, down-pressure tube; 603, air pressure tube; 604, absorption ring; 605, absorption assembly; 6051, installation box; 6052, absorption tube; 6053, slide; 6054, contact arm; 6055, rolling plate; 6056, contact block; 6057, placement block; 8, limiting mechanism; 801, sector plate; 802, limiting film; 80 3. Limit block; 804. Reflection assembly; 8041. Coating film; 8042. Swing rod; 8043. Reflection ring; 8044. Push-pull strip; 8045. Impact tube; 805. Clamp; 7. Push mechanism; 701. Push rod; 702. Contact tube; 703. Extrusion bag; 704. Push ring; 705. Noise reduction assembly; 7051. Pad; 7052. Absorption rod; 7053. Dissipation film; 7054. Rolling ring; 7055. Pull strip; 7056. Radiation tube. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] For example, see Figure 1-Figure 3 The present invention provides a technical solution: a signal sampling device, comprising a chassis 1, a sampling tube 2 is fixedly connected to the top of the chassis 1, a telescopic column 3 is fixedly connected to the bottom of the inner wall of the sampling tube 2, a sampling plate 4 is slidably connected to the surface of the telescopic column 3, a connecting column 5 is fixedly connected to the top of the sampling tube 2, and further comprising:

[0031] The stretching mechanism 6 comprises an absorption plate 601 fixedly connected to the top of the connecting column 5, a limiting mechanism 8 is arranged on the inner wall of the absorption plate 601, an air pressure tube 603 is fixedly connected in the top slot of the absorption plate 601, the air pressure tube 603 is filled with air pressure, and when subjected to external pressure, the air pressure is discharged into the absorption plate 601, a downward pressure tube 602 is fixedly connected to the top of the air pressure tube 603, an absorption ring 604 is fixedly connected to the bottom of the inner wall of the downward pressure tube 602, and an absorption assembly 605 is arranged at the top slot of the absorption plate 601.

[0032] The absorption component 605 includes an installation box 6051 fixedly connected to the top slot hole, and a discharge groove is provided at the bottom of the inner wall of the installation box 6051. The signal will flow into the installation box 6051 from the inside of the push rod 701 through the discharge groove. Absorption tubes 6052 are fixedly connected to both sides of the inner wall of the installation box 6051. The surface of the absorption tube 6052 is provided with a plug-in groove. When the rolling plate 6055 rotates to the inside of the plug-in groove, the internal signal can be absorbed into the inside. A slide 6053 is fixedly connected to the bottom of the inner wall of the installation box 6051, and a placement block 6057 is slidably connected to the top of the slide 6053 through a slider. The top of the placement block 6057 is rotatably connected to the rolling plate 6055 through a rotating shaft. The bottom of the rolling plate 6055 is fixedly connected to a contact block 6056, and contact arms 6054 are fixedly connected to both sides of the slide 6053. The end of the absorption ring 604 away from the inner wall of the downward pressure tube 602 is fixedly connected to the top of the rolling plate 6055.

[0033] Working method of the first embodiment: when the absorption rod 7052 absorbs the external signal, the signal will be transmitted into the installation box 6051 through the push rod 701. After the signal enters the installation box 6051, the signal will flow into the absorption tube 6052, and the noise will generate fluctuations on the inner wall of the installation box 6051. When the pressure tube 602 is pulled upward, the rolling plate 6055 can be pulled through the absorption ring 604 on its inner wall. After the top of the rolling plate 6055 is pulled, it will slide on the top of the slide 6053 through the placement block 6057 at the bottom. During the sliding process, the rolling plate 6055 will move on the installation box through the rotating shaft at the bottom. The inner wall of 6051 rotates, and when the rolling disk 6055 rotates, the contact block 6056 at the bottom thereof will contact with the contact arm 6054, thereby eliminating the noise contained in the installation box 6051. When the rolling disk 6055 contacts with the inner wall of the absorption tube 6052, the signal in the absorption tube 6052 is absorbed by the rolling disk 6055, and the rolling disk 6055 that absorbs the signal will flow into the absorption disk 601 through the absorption ring 604. By pressing the sampling disk 4 downward, the signal in the absorption disk 601 can flow into the sampling tube 2, so that a stratification can be generated between the signal and the noise to avoid the influence of noise on the signal.

[0034] Example 2: Based on Example 1, continue to refer to 4- Figure 5 The limiting mechanism 8 includes a fan-shaped plate 801, which is fixedly connected to the bottom of the inner wall of the absorption disk 601, and a pushing mechanism 7 is arranged on both sides of the inner wall of the fan-shaped plate 801. A clamping block 805 is fixedly connected to the surface of the fan-shaped plate 801, and both sides of the inner wall of the clamping block 805 are rotatably connected to the limiting membrane 802 through a rotating shaft. The bottom of the limiting membrane 802 is fixedly connected to the limiting block 803, and slots are provided at both ends of the limiting block 803. External noise can be introduced into the interior of the dissipation membrane 7053 through the slots. A reflecting component 804 is arranged at the bottom of the limiting membrane 802.

[0035] The reflective component 804 includes a coating film 8041, which is made of a freely retractable soft rubber material and has slots inside. When air pressure is injected into the inside, it will expand and contract outward and isolate the noise. The coating film 8041 is fixedly connected to the bottom of the limiting film 802, and the inner wall of the coating film 8041 is rotatably connected to a swing rod 8042 through a rotating shaft. The surface of the coating film 8041 is fixedly connected to a reflective ring 8043, and the surface of the reflective ring 8043 is installed with slots to reflect the absorbed noise outward. The bottom of the inner wall of the reflective ring 8043 is fixedly connected to a push-pull strip 8044, and the end of the push-pull strip 8044 away from the inner wall of the reflective ring 8043 is fixedly connected to an impact tube 8045.

[0036] The working method of the second embodiment is as follows: when the contact tube 702 slides toward the inner wall of the fan-shaped plate 801, the pushing ring 704 will squeeze the top of the limiting membrane 802, so that the limiting membrane 802 is pulled outward from the surface slot of the fan-shaped plate 801, and the limiting membrane 802 moves to the top of the pad 7051, and the pushing ring 704 is squeezed and expanded inward to squeeze the squeezing bag 703. When the squeezing bag 703 is squeezed, the internal air pressure is discharged into the interior of the limiting membrane 802 through the pushing ring 704. The air pressure will cause the covering film 8041 at its bottom to expand and contract outward, and the absorbing rod 7052 is wrapped by the covering film 8041 on both sides of the limiting membrane 802, so that while protecting the external signal transmission, it can also isolate noise pollution, and remotely start the covering The servo motor at the bottom of the membrane 8041 is a Mitsubishi Electric HG-KR servo motor. The servo motor drives the swing rod 8042 to swing back and forth. While the swing rod 8042 is swinging, its other end will hit the impact tube 8045 and drive the impact tube 8045 to pop out through the push-pull strip 8044. When the impact tube 8045 hits the inner wall of the reflection ring 8043, the noise flowing into the inside of the coating membrane 8041 will be absorbed into the inside through the impact tube 8045. When the impact tube 8045 hits the inner wall of the reflection ring 8043, the noise in the impact tube 8045 will be reflected outward through the surface slots of the reflection ring 8043. By setting this component, external noise can be prevented from continuing to interfere with the signal sampling device.

[0037] Example 3: Based on Example 2, continue to refer to Figure 6-Figure 7 The pushing mechanism 7 includes a pushing rod 701, both ends of which are slidably connected to both sides of the inner wall of the fan-shaped plate 801, one end of the pushing rod 701 penetrates the surface of the fan-shaped plate 801, and a noise reduction component 705 is provided at the end of the pushing rod 701 away from the inner wall of the fan-shaped plate 801, and a contact tube 702 is fixedly connected to the surface of the pushing rod 701, and an extrusion bag 703 is fixedly connected to the top of the contact tube 702. Air pressure is injected into the extrusion bag 703, and when it is squeezed externally, the air pressure will be discharged outwardly and flow into the pushing ring 704, and the top of the contact tube 702 is fixedly connected to the pushing ring 704, the extrusion bag 703 is fixedly connected to the surface of the pushing ring 704, and the end of the pushing ring 704 away from the extrusion bag 703 is fixedly connected to the top of the limiting membrane 802.

[0038] The noise reduction component 705 includes a pad 7051, which is fixedly connected to one end of the push rod 701, and absorption rods 7052 are fixedly connected to both sides of the pad 7051. A dissipation film 7053 is fixedly connected to the surface of the pad 7051, and a storage hole is provided on the surface of the dissipation film 7053. Noise will flow into the storage hole and vibrate the dissipation film 7053. The inner wall of the dissipation film 7053 is slidably connected to a rolling ring 7054 through a slider. The inner wall of the rolling ring 7054 is fixedly connected to a radiation tube 7056. Absorption grooves are provided at both ends of the radiation tube 7056 to absorb the noise inside the dissipation film 7053 into the interior. A pull bar 7055 is slidably connected to the groove on the surface of the pad 7051, and the pull bar 7055 is slidably connected to the surface of the rolling ring 7054.

[0039] The working method of the third embodiment is as follows: the pressure tube 602 is pressed downward to squeeze the air tube 603, so that the air pressure discharged from the air tube 603 flows into the fan-shaped plate 801, and the air pressure drives the push rod 701 to slide outward on the inner wall of the fan-shaped plate 801. When the push rod 701 slides outward, it drives the pad 7051 to move outward to increase the receiving distance of the signal sampling device. At the same time, when the contact tube 702 slides toward the inner wall of the fan-shaped plate 801, the contact tube 702 and the inner wall of the fan-shaped plate 801 are squeezed, which drives the push ring 704 at the top thereof to expand and contract inward. The squeezing bag 703 is squeezed, and the internal air pressure of the squeezing bag 703 is discharged into the pad 7051 through the push rod 701. The air pressure drives the pulling bar 7055 to rotate on the inner wall of the pad 7051, and drives the rolling ring 7054 to rotate through the pulling bar 7055. When the rolling ring 7054 rotates, the radiation tube 7056 on its surface will continuously contact and squeeze the surface of the dissipative film 7053, and the noise generated in the outside world will be transmitted to the inside of the dissipative film 7053. When the radiation tube 7056 is in continuous contact with the surface of the dissipative film 7053, a large amount of noise absorbed when transmitting signals will be eliminated.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A signal sampling device, comprising a chassis (1), a sampling tube (2) being fixedly connected to the top of the chassis (1), a telescopic column (3) being fixedly connected to the bottom of the inner wall of the sampling tube (2), a sampling plate (4) being slidably connected to the surface of the telescopic column (3), and a connecting column (5) being fixedly connected to the top of the sampling tube (2), characterized in that: Also includes: The stretching mechanism (6) comprises an absorption plate (601) fixedly connected to the top of the connecting column (5), a limiting mechanism (8) being provided on the inner wall of the absorption plate (601), an air pressure tube (603) being fixedly connected in the slot hole at the top of the absorption plate (601), a downward pressure tube (602) being fixedly connected at the top of the air pressure tube (603), an absorption ring (604) being fixedly connected at the bottom of the inner wall of the downward pressure tube (602), and an absorption assembly (605) being provided at the slot hole at the top of the absorption plate (601); The absorption component (605) comprises a mounting box (6051) fixedly connected to a top slot hole, absorption tubes (6052) fixedly connected to both sides of the inner wall of the mounting box (6051), a slide (6053) fixedly connected to the bottom of the inner wall of the mounting box (6051), a placement block (6057) slidably connected to the top of the slide (6053) via a slider, a rolling plate (6055) rotatably connected to the top of the placement block (6057) via a rotating shaft, a contact block (6056) fixedly connected to the bottom of the rolling plate (6055), contact arms (6054) fixedly connected to both sides of the slide (6053), and an end of the absorption ring (604) away from the inner wall of the downward pressure tube (602) fixedly connected to the top of the rolling plate (6055).

2. A signal sampling device according to claim 1, characterized in that: The limiting mechanism (8) comprises a fan-shaped plate (801), the fan-shaped plate (801) being fixedly connected to the bottom of the inner wall of the absorption disk (601), a pushing mechanism (7) being arranged on both sides of the inner wall of the fan-shaped plate (801), a clamping block (805) being fixedly connected to the surface of the fan-shaped plate (801), both sides of the inner wall of the clamping block (805) being rotatably connected to a limiting membrane (802) via a rotating shaft, the bottom of the limiting membrane (802) being fixedly connected to the limiting block (803), and a reflecting component (804) being arranged on the bottom of the limiting membrane (802).

3. A signal sampling device according to claim 2, characterized in that: The pushing mechanism (7) comprises a pushing rod (701), two ends of which are slidably connected to two sides of the inner wall of the fan-shaped plate (801), one end of the pushing rod (701) passes through the surface of the fan-shaped plate (801), and one end of the pushing rod (701) away from the inner wall of the fan-shaped plate (801) is provided with a noise reduction component (705), the surface of the pushing rod (701) is fixedly connected to a contact tube (702), the top of the contact tube (702) is fixedly connected to an extrusion capsule (703), the top of the contact tube (702) is fixedly connected to a pushing ring (704), the extrusion capsule (703) is fixedly connected to the surface of the pushing ring (704), and the end of the pushing ring (704) away from the extrusion capsule (703) is fixedly connected to the top of the limiting membrane (802).

4. A signal sampling device according to claim 2, characterized in that: The reflective assembly (804) comprises a coating film (8041), the coating film (8041) being fixedly connected to the bottom of the limiting film (802), the inner wall of the coating film (8041) being rotatably connected to a swing rod (8042) via a rotating shaft, the surface of the coating film (8041) being fixedly connected to a reflective ring (8043), the bottom of the inner wall of the reflective ring (8043) being fixedly connected to a push-pull strip (8044), and one end of the push-pull strip (8044) away from the inner wall of the reflective ring (8043) being fixedly connected to an impact tube (8045).

5. A signal sampling device according to claim 3, characterized in that: The noise reduction component (705) comprises a pad (7051), wherein the pad (7051) is fixedly connected to one end of the push rod (701), and absorption rods (7052) are fixedly connected to both sides of the pad (7051), and a dissipation film (7053) is fixedly connected to the surface of the pad (7051), and the inner wall of the dissipation film (7053) is slidably connected to a rolling ring (7054) via a slider, and the inner wall of the rolling ring (7054) is fixedly connected to a radiation tube (7056), and a pulling bar (7055) is slidably connected to a groove on the surface of the pad (7051), and the pulling bar (7055) is slidably connected to the surface of the rolling ring (7054).

6. A signal sampling device according to claim 5, characterized in that: The number of the absorption rods (7052) is set to two, and the two absorption rods (7052) are symmetrically installed on both sides of the pad (7051) with the center line of the pad (7051) as the symmetry axis.

7. A signal sampling device according to claim 4, characterized in that: The number of the covering films (8041) is set to two, and the two covering films (8041) are symmetrically installed at the bottom of the limiting film (802) with the center line of the limiting film (802) as the symmetry axis.

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