CN111786075B - Antenna device and signal covering method applied to elevator shaft - Google Patents
Antenna device and signal covering method applied to elevator shaft Download PDFInfo
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- CN111786075B CN111786075B CN202010588351.4A CN202010588351A CN111786075B CN 111786075 B CN111786075 B CN 111786075B CN 202010588351 A CN202010588351 A CN 202010588351A CN 111786075 B CN111786075 B CN 111786075B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000008054 signal transmission Effects 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims 3
- 230000003139 buffering effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The application relates to an antenna device and a signal covering method applied to an elevator shaft, and relates to the technical field of signal covering in the elevator shaft. The elevator car pushes the antenna body to enable the elevator car to be in contact with the antenna body, a signal generated by the antenna body and the elevator car are kept close to ensure signal strength, the elevator car and the antenna body can be separated from each other by a certain distance, and the maximum distance between the elevator car and the antenna body is within the signal transmission range of the antenna body.
Description
Technical Field
The application relates to the technical field of signal coverage in an elevator shaft, in particular to an antenna device and a signal coverage method applied to the antenna device in the elevator shaft.
Background
The elevator shaft usually has an electromagnetic effect, and the elevator car forms a faraday cage after the car door and the landing door are closed, and the faraday cage has an electrostatic shielding effect, so that the electromagnetic wave signal in the elevator car is poor, and the signal in the elevator car is poor. Therefore, in existing elevator cars, antenna devices are often installed to increase signal coverage and thereby improve signal transmission within the elevator car. In the traditional signal covering in the elevator shaft, the mode of covering the elevator shaft or the elevator car hall is often adopted. Hoistway coverage refers to mounting antennas and relay stations at the top within the hoistway. The covering of the elevator shaft is to install an omnidirectional antenna in the elevator car hall of each floor and then communicate by means of electromagnetic waves leaked into the elevator car.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the elevator shaft covers the influence of antenna self signal transmission distance, and when the distance between elevator car and antenna is far away, signal intensity that can receive in the elevator car is very weak. The manner in which the hoistway is covered requires a large number of antennas and is therefore expensive to construct.
Disclosure of Invention
In order to improve the signal strength in the elevator car under the condition of using a small number of antennas, the antenna device provided by the application adopts the following technical scheme:
the utility model provides an antenna device, includes balladeur train and antenna mechanism, antenna mechanism includes the antenna body that is promoted by the elevator car and orders about the reset component that the antenna body slided and resets, the antenna body with the balladeur train slides and is connected, the antenna body slides along vertical direction.
Through adopting above-mentioned technical scheme, elevator car promotes the antenna body so that keep in contact between elevator car and the antenna body, keep closely in order to guarantee signal strength between the signal that the antenna body produced this moment and the elevator car, and can break away from certain distance relatively between elevator car and the antenna body, and the maximum distance before elevator car and the antenna body is in the signal transmission within range of antenna body, from this, make this antenna device can increase the coverage of antenna body signal when guaranteeing signal strength, thereby reduce the quantity of antenna body.
Preferably, the reset assembly including receive the slide that elevator car promoted, set up in the switching-over piece of balladeur train with hang and locate the lifting rope of switching-over piece, the fixed counterweight that is provided with of one end of lifting rope, the other end of lifting rope is walked around the switching-over piece with slide fixed connection, the slide with the balladeur train slides and is connected, the antenna body is located on the slide.
Through adopting above-mentioned technical scheme, elevator car promotes the slide and moves towards the direction of being close to or keeping away from the switching-over piece, and the counterweight is corresponding under the effect of gravity and is kept away from or is close to the switching-over piece this moment, and then when breaking away from between elevator car and the slide, the slide slides towards the direction of keeping away from or being close to the switching-over piece under the effect of self gravity and in order to realize reseing.
Preferably, when the sliding seat is positioned above the elevator car, the weight of the sliding seat is greater than that of the counterweight; when the slide is located elevator car below, the weight of slide is less than the weight of counterweight.
By adopting the technical scheme, when the sliding seat is positioned above the elevator car, the sliding seat needs to slide downwards for resetting, and at the moment, the weight of the sliding seat is greater than that of the counterweight so that one end of the lifting rope, where the sliding seat is positioned, can move downwards; when the slide is located elevator car below, the slide need upwards slide in order to reset, and the weight of slide this moment is less than the weight of counterweight so that the one end at counterweight place on the lifting rope moves down, and the one end at sliding seat place on the lifting rope corresponds upward movement.
Preferably, be provided with the bolster on the slide, the bolster includes the buffering backing plate, the buffering backing plate is located one side that the slide is close to elevator car.
Through adopting above-mentioned technical scheme, the slide is contradicted with the buffering backing plate earlier before conflicting with elevator car to slow down the impact force between slide and the elevator car, in order to reduce the damage between elevator car and the slide.
Preferably, the bolster still including slide set up in the direction slide bar and the cover of slide are located the buffering elastic component of direction slide bar, the one end and the slide of bolster are connected and the other end with the buffering backing plate is connected, the buffering backing plate with fixed connection between the direction slide bar.
Through adopting above-mentioned technical scheme, elevator car is further absorbed by the elastic deformation who cushions the backing plate to the impact force to further reduce the impact damage between elevator car and the slide and protect elevator car and slide.
Preferably, the antenna mechanism further comprises a first feeder and a take-up assembly, the take-up assembly comprises a base, a winding disc and a driving piece, the winding disc is rotatably arranged on the base, the driving piece drives the winding disc to rotate, the driving piece is located on the base, one end of the first feeder is wound on the winding disc, and the other end of the first feeder is in communication connection with the antenna body.
Through adopting above-mentioned technical scheme, first feeder be used for with antenna body between carry out signal transmission, the first feeder of rolling dish rolling is in order to avoid first feeder to take place to interfere between elevator well and elevator car.
Preferably, the winding disc comprises a rotating plate rotatably arranged on the base and frame plates fixedly provided with the rotating plate, the number of the frame plates is at least three, all the frame plates are circumferentially distributed at intervals by taking the axis of the rotating plate as a center, a wire passing gap is formed between every two adjacent frame plates, a conductive sliding ring is arranged on the rotating plate and located between all the frame plates, and one end of the first feeder line wound on the winding disc is in communication connection with a rotor part of the conductive sliding ring.
By adopting the technical scheme, one end of the first feeder wound on the winding disc penetrates through the wire passing gap to be connected with the rotor part of the conductive slip ring, so that the damage of the first feeder caused by self torsion is relieved, and the service life of the first feeder is prolonged.
Preferably, the antenna device further comprises a second feeder line and a signal base station, wherein one end of the second feeder line is in communication connection with the signal base station, and the other end of the second feeder line is in communication connection with the stator part of the conductive slip ring.
By adopting the technical scheme, the second feeder line is in communication connection with the stator part of the conductive slip ring to communicate the signal base station and the antenna body, so that the signal transmission is facilitated, the number of the antenna mechanisms can be multiple, and the multiple antenna mechanisms are connected to one signal base station to reduce the construction cost.
In order to improve the signal strength in the elevator car under the condition of using a small number of antennas, the signal coverage method of the antenna device applied to the elevator shaft adopts the following technical scheme:
a signal covering method of an antenna device applied in an elevator shaft comprises the following steps:
s1, mounting a sliding frame, a signal base station and a winding disc in the elevator shaft, mounting a conductive slip ring on the winding disc, and communicating the signal base station with a stator part of the conductive slip ring through a second feeder line;
s2, installing a sliding seat on the sliding frame, installing an antenna body on the sliding seat, connecting the antenna body with a rotor part of the conductive sliding ring through a first feeder line in a communication manner, and winding a first feeder line by a winding disc;
s3, adjusting the lobe direction of the antenna body so that the lobe direction always faces the elevator car;
and S4, moving the elevator car to push the sliding seat to move, and increasing the signal radiation range of the antenna body.
Through adopting above-mentioned technical scheme, the biggest distance before elevator car and the antenna body is in the signal transmission within range of antenna body to only need not to install a large amount of antenna bodies and can make elevator car obtain better signal strength in the elevator well in making the elevator well.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the elevator car pushes the antenna body to enable the elevator car to be in contact with the antenna body, a signal generated by the antenna body and the elevator car are kept close to ensure signal strength, the elevator car and the antenna body can be separated from each other by a certain distance, and the maximum distance between the elevator car and the antenna body is within the signal transmission range of the antenna body. (ii) a
2. The elevator car pushes the sliding seat to move towards the direction close to or far away from the reversing piece, the counterweight piece correspondingly moves away from or close to the reversing piece under the action of gravity at the moment, and when the elevator car is separated from the sliding seat, the sliding seat slides towards the direction far away from or close to the reversing piece under the action of self gravity to realize resetting;
3. the maximum distance between the elevator car and the antenna body is within the signal transmission range of the antenna body, so that the elevator car can obtain better signal strength in the elevator shaft only without installing a large number of antenna bodies in the elevator shaft.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of an antenna mechanism according to an embodiment of the present application;
fig. 3 is a schematic cross-sectional structure view of a wire rewinding assembly in an embodiment of the present application.
In the figure, a, an elevator shaft; b. an elevator car; 1. a carriage; 2. an antenna mechanism; 21. an antenna body; 22. a reset assembly; 221. a slide base; 222. a reversing member; 223. a lifting rope; 224. a counterweight; 225. a buffer member; 2251. a cushion plate; 2252. a guide slide bar; 2253. a buffer elastic member; 23. a first feed line; 24. a wire take-up assembly; 241. a base; 242. a winding disc; 2421. rotating the plate; 2422. a frame plate; 2423. a wire passing gap; 243. a drive member; 244. a conductive slip ring; 3. a second feed line; 4. and a signal base station.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses an antenna device, install in elevator well a in order to be used for to elevator car b radiation signal.
Referring to fig. 1, the antenna device includes a carriage 1 and an antenna mechanism 2. The length direction of the carriage 1 is set in the vertical direction. The number of the carriages 1 is two, and the antenna mechanism 2 is located between the two carriages 1. In the present embodiment, the number of the antenna mechanisms 2 is two, two antenna mechanisms 2 are distributed in the vertical direction, and the elevator car b is located between the two antenna mechanisms 2.
Referring to fig. 1 and 2, the antenna mechanism 2 includes an antenna body 21 pushed by the elevator car b, and a reset assembly 22 for driving the antenna body 21 to slide and reset. Specifically, the reset assembly 22 includes a slide seat 221 pushed by the elevator car b, a direction change member 222 provided to the slide seat 1, and a lifting rope 223 hung from the direction change member 222. The antenna body 21 is located on one side of the sliding seat 221, which is far away from the elevator car b, and the sliding seat 221 is connected with the sliding frame 1 in a sliding manner so as to drive the antenna body 21 and the sliding frame 1 to slide relatively in the vertical direction. The sliding base 221 can collide with or separate from the elevator car b, and the maximum distance between the elevator car b and the antenna body 21 is within the signal transmission range of the antenna body 21. The diverter 222 may be a fixed pulley or an eye. In this embodiment, the reversing member 222 is a fixed pulley rotatably connected to the carriage 1. Two ends of the lifting rope 223 are respectively a fixed end and a counterweight end, the fixed end of the lifting rope 223 is fixedly connected with the upper surface of the sliding seat 221, the counterweight end of the lifting rope 223 bypasses the upper end of the reversing piece 222 to fixedly arrange a counterweight 224, and the counterweight 224 is a heavy hammer. In the antenna mechanism 2 located above the elevator car b, the sliding base 221 is located above the elevator car b, and the weight of the sliding base 221 is greater than the weight of the counterweight 224. In the antenna mechanism 2 located below, the sliding base 221 is located below the elevator car b, and the weight of the sliding base 221 is smaller than the weight of the weight 224.
In order to reduce impact damage between the carriage 221 and the elevator car b, a buffer 225 is provided on the carriage 221. Specifically, the buffer 225 includes a buffer pad 2251 for abutting against the elevator car b, a guide slide bar 2252 slidably disposed on the slide base 221, and a buffer elastic member 2253 sleeved on the guide slide bar 2252. The cushion 2251 is located on the side of the slide 221 near the elevator car b. The axes of the guide slide bars 2252 are arranged in the vertical direction, the number of guide slide bars 2252 is two, and two guide slide bars 2252 are located on the side of the cushion 2251 facing away from the elevator car b and are fixedly connected to the cushion 2251. The buffering elastic member 2253 is a spring, and the buffering elastic member 2253 provides an elastic force to the buffering plate 2251 toward a direction approaching the elevator car b. The cushion 225 further includes a cushion 225 having one end fixedly connected to the slide carriage 221 and the other end fixedly connected to the cushion 2251, and the cushion 2251 is fixedly connected to the guide slide 2252.
With continuing reference to fig. 1 and 2, in order to implement signal transmission, the antenna device further includes a second feeder 3 and a signal base station 4, the antenna mechanism 2 further includes a first feeder 23 and a wire take-up assembly 24, one end of the first feeder 23 is communicatively connected to the antenna body 21, the other end of the first feeder 23 is communicatively connected to one end of the second feeder 3, and the other end of the second feeder 3 is communicatively connected to the signal base station 4. The take-up assembly 24 is used to take up the first feed line 23 to avoid interference of the first feed line 23 with the elevator car b within the elevator hoistway a.
Referring to fig. 3, the wire takeup assembly 24 includes a base 241 fixedly connected to the elevator shaft a, a takeup reel 242 rotatably disposed on the base 241, and a driving member 243 for driving the takeup reel 242 to rotate. The driving member 243 is located on the base 241, the driving member 243 is a driving motor, and an output shaft of the driving member 243 is coaxially and fixedly arranged with the winding disc 242 or is driven by a chain wheel and a chain.
One end of the first feeder 23 is wound around the take-up reel 242. Specifically, the take-up reel 242 includes a turn plate 2421 rotatably provided to the base 241 and a shelf plate 2422 fixedly provided with the turn plate 2421. The number of the rotating plates 2421 is two, the shelf plate 2422 is located between the two rotating plates 2421, one end of the shelf plate 2422 is fixedly connected with one of the rotating plates 2421, and the other end of the shelf plate 2422 is fixedly connected with the other rotating plate 2421. The number of the grill plates 2422 is at least three, and all the grill plates 2422 are circumferentially spaced apart centering on the axis of the turn plate 2421. A wire passing gap 2423 is formed between two adjacent shelf boards 2422, and one end of the first feeder 23 wound on the take-up reel 242 passes through the wire passing gap 2423 to extend into between all the shelf boards 2422.
It is worth mentioning that one of the turning plates 2421 is provided with the conductive slip ring 244, and the conductive slip ring 244 is located between all the shelf plates 2422. One end of the first feeder 23 wound on the winding disc 242 is communicatively connected with the rotor portion of the conductive slip ring 244, and the other end of the second feeder 3 is communicatively connected with the stator portion of the conductive slip ring 244, so that the communicative connection between the first feeder 23 and the second feeder 3 is realized, and the antenna body 21 and the signal base station 4 are communicated for communication signal transmission.
The implementation principle of the antenna device in the embodiment of the application is as follows: when the elevator car b collides with the sliding seat 221, the elevator car b pushes the sliding seat 221 to move so as to drive the antenna body 21 to move, and at the moment, the elevator car b keeps contact with the antenna body 21, so that the signal intensity in the elevator car b is improved; when the elevator car b is separated from the sliding seat 221, the counterweight 224 drives the sliding seat 221 to move and reset under the action of gravity, and the elevator car b is always located in the range of the antenna body 21 to ensure signal transmission, so that the moving range of the elevator car b when the signal strength is ensured is increased.
The application also provides a signal covering method of the antenna device applied to the elevator shaft a.
Referring to fig. 1 and 2, a signal covering method of an antenna device applied in an elevator shaft a includes the following steps:
s1, installing the sliding frame 1, the signal base station 4 and two winding disks 242 in the elevator hoistway a, wherein the two winding disks 242 are respectively located at the upper end and the lower end of the elevator hoistway a, a conductive slip ring 244 is installed on each winding disk 242, and the signal base station 4 is simultaneously communicated with the stator parts of the conductive slip rings 244 on the two winding disks 242 through a second feeder 3.
S2, mounting the sliding base 221 on the sliding frame 1, and mounting the antenna body 21 on a side of the sliding base 221 away from the elevator car b, wherein the antenna body 21 is in communication connection with a rotor part of the conductive slip ring 244 through the first feeder 23, and the winding disc 242 winds the first feeder 23.
And S3, adjusting the lobe direction of the antenna body 21 so that the lobe direction always faces the elevator car b.
S4, when the elevator car b moves to push the sliding seat 221 to move, and the elevator car b moves reversely to disengage from the sliding seat 221, the counterweight 224 drives the sliding seat 221 to move and reset under the action of gravity, thereby increasing the signal radiation range of the antenna body 21.
The implementation principle of the signal coverage method of the antenna device applied to the elevator shaft a in the embodiment of the application is as follows: when the elevator car b collides with the sliding seat 221, the elevator car b pushes the sliding seat 221 to move so as to drive the antenna body 21 to move, and at the moment, the elevator car b keeps contact with the antenna body 21, so that the signal intensity in the elevator car b is improved; when the elevator car b is separated from the sliding seat 221, the counterweight 224 drives the sliding seat 221 to move and reset under the action of gravity, and the elevator car b is always located in the range of the antenna body 21 to ensure signal transmission, so that the moving range of the elevator car b when the signal strength is ensured is increased.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An antenna device is characterized by comprising a carriage (1) and antenna mechanisms (2), wherein each antenna mechanism (2) comprises an antenna body (21) pushed by an elevator car (b) and a reset assembly (22) for driving the antenna body (21) to slide and reset, the antenna body (21) is connected with the carriage (1) in a sliding mode, the antenna body (21) slides in the vertical direction, and the elevator car (b) is located between the two antenna mechanisms (2);
the reset assembly (22) comprises a sliding seat (221) pushed by an elevator car (b), a reversing piece (222) arranged on the sliding seat (1) and a lifting rope (223) hung on the reversing piece (222), one end of the lifting rope (223) is fixedly provided with a counterweight piece (224), the other end of the lifting rope (223) bypasses the reversing piece (222) to be fixedly connected with the sliding seat (221), the sliding seat (221) is connected with the sliding seat (1) in a sliding mode, the antenna body (21) is located on the sliding seat (221), and the sliding seat (221) and the elevator car (b) can be abutted or separated;
when the elevator car (b) is abutted against the sliding seat (221), the elevator car (b) pushes the sliding seat (221) to move so as to drive the antenna body (21) to move, and at the moment, the elevator car (b) is kept in contact with the antenna body (21), so that the signal intensity in the elevator car (b) is improved; when the elevator car (b) is separated from the sliding seat (221), the counterweight (224) drives the sliding seat (221) to move and reset under the action of gravity, and the elevator car (b) is always located in the range of the antenna body (21) to ensure signal transmission, so that the moving range of the elevator car (b) is enlarged when the signal strength is ensured.
2. An antenna arrangement according to claim 1, characterized in that the weight of the slide (221) is greater than the weight of the counterweight (224) when the slide (221) is above the elevator car (b); when the sliding base (221) is located below the elevator car (b), the weight of the sliding base (221) is less than the weight of the counterweight (224).
3. An antenna arrangement according to claim 1, characterized in that a buffer (225) is arranged on the slide (221), said buffer (225) comprising a buffer pad (2251), said buffer pad (2251) being located on the side of the slide (221) near the elevator car (b).
4. The antenna device as claimed in claim 3, wherein the damper (225) further comprises a guide sliding rod (2252) slidably disposed on the sliding base (221) and a damping elastic member (2253) sleeved on the guide sliding rod (2252), one end of the damper (225) is connected to the sliding base (221) and the other end is connected to the damping pad (2251), and the damping pad (2251) is fixedly connected to the guide sliding rod (2252).
5. The antenna device according to claim 1, wherein the antenna mechanism (2) further comprises a first feeder (23) and a take-up assembly (24), the take-up assembly (24) comprises a base (241), a take-up reel (242) rotatably disposed on the base (241), and a driving member (243) for driving the take-up reel (242) to rotate, the driving member (243) is located on the base (241), one end of the first feeder (23) is wound on the take-up reel (242), and the other end of the first feeder (23) is communicatively connected with the antenna body (21).
6. An antenna device according to claim 5, wherein the take-up reel (242) comprises a rotating plate (2421) rotatably disposed on the base (241) and a frame plate (2422) fixedly disposed on the rotating plate (2421), the number of the frame plates (2422) is at least three, all the frame plates (2422) are circumferentially distributed at intervals by taking the axis of the rotating plate (2421) as a center, a wire passing gap (2423) is formed between every two adjacent frame plates (2422), a conductive slip ring (244) is mounted on the rotating plate (2421), the conductive slip ring (244) is located between all the frame plates (2422), and one end of the first feeder (23) wound on the take-up reel (242) is in communication connection with a rotor part of the conductive slip ring (244).
7. An antenna arrangement according to claim 6, characterized in that the antenna arrangement further comprises a second feeder (3) and a signal base station (4), one end of said second feeder (3) being communicatively connected to said signal base station (4) and the other end of said second feeder (3) being communicatively connected to a stator part of said conductive slip ring (244).
8. A signal covering method of an antenna device applied in an elevator shaft (a) is characterized by comprising the following steps:
s1, mounting a sliding frame (1), a signal base station (4) and a winding disc (242) in an elevator hoistway (a), mounting a conductive slip ring (244) on the winding disc (242), and enabling the signal base station (4) and a stator part of the conductive slip ring (244) to be communicated through a second feeder (3);
s2, a sliding seat (221) is installed on the sliding frame (1), an antenna body (21) is installed on the sliding seat (221), the antenna body (21) is in communication connection with a rotor part of a conductive slip ring (244) through a first feeder (23), a winding disc (242) winds the first feeder (23), an elevator car (b) is located between two antenna mechanisms (2), and the sliding seat (221) and the elevator car (b) can be abutted or separated;
s3, adjusting the lobe direction of the antenna body (21) so that the lobe direction always faces the elevator car (b);
s4, the elevator car (b) moves to push the sliding seat (221) to move, and the signal radiation range of the antenna body (21) is increased: when the elevator car (b) is abutted against the sliding seat (221), the elevator car (b) pushes the sliding seat (221) to move so as to drive the antenna body (21) to move, and at the moment, the elevator car (b) is kept in contact with the antenna body (21), so that the signal intensity in the elevator car (b) is improved; when the elevator car (b) is separated from the sliding seat (221), the counterweight (224) drives the sliding seat (221) to move and reset under the action of gravity, and the elevator car (b) is always located in the range of the antenna body (21) to ensure signal transmission, so that the moving range of the elevator car (b) is enlarged when the signal strength is ensured.
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| CN202010588351.4A CN111786075B (en) | 2020-06-24 | 2020-06-24 | Antenna device and signal covering method applied to elevator shaft |
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| CN202010588351.4A CN111786075B (en) | 2020-06-24 | 2020-06-24 | Antenna device and signal covering method applied to elevator shaft |
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