WO2018214026A1

WO2018214026A1 - Monitoring apparatus

Info

Publication number: WO2018214026A1
Application number: PCT/CN2017/085521
Authority: WO
Inventors: 张奕; 洪晓雄
Original assignee: 深圳富视安智能科技有限公司
Priority date: 2017-05-23
Filing date: 2017-05-23
Publication date: 2018-11-29
Also published as: CN108337924A

Abstract

Disclosed is a monitoring apparatus, comprising: a power supply board (7), a motor driver board (8), a slip ring bushing (9), a bearing (11) and a signal floating transmission rotating device, wherein an outer wall of the slip ring bushing (9) is fixedly connected to an inner wall of the bearing (11), a slip ring (10) is arranged in the slip ring bushing (9), and the slip ring (10) is electrically connected to the power supply board (7); the signal floating transmission rotating device comprises a plug (2) and a socket (1); the plug (2) is arranged in the slip ring bushing (9) and is in clearance fit with the socket (1) so that the plug (2) is capable of rotating relative to a centre axis of the socket (1); the plug (2) is connected to an optical fibre transmission line (3) so that the optical fibre transmission line (3) points to a bottom wall of the socket (1) and transmits a multipath optical communication signal by means of wavelength division multiplexing; and the socket (1) is arranged on the motor driver board (8) and is located on the centre axis of rotation of the monitoring apparatus. By means of optical fibre wavelength division multiplexing, a multipath communication signal can be transmitted, thus realizing high-speed and highly reliable signal transmission, reducing the use of the slip ring (10) and simplifying the structure of the monitoring apparatus. The socket (1) and the plug (2) cooperatively rotate to transmit an optical signal by means of floating connection, thus avoiding the effect of rotary friction on the signal, and thereby improving transmission quality.

Description

Manual Title: A monitoring device

Technical field

[0001] The present invention relates to the field of electronic device technologies, and in particular, to a monitoring device.

Background technique

[0002] High-speed domes, pan-tilt machines, etc. are commonly used monitoring devices. Because they can be rotated up and down and left and right, they are suitable for monitoring large-area and moving targets. They are widely used in intelligent building monitoring, bank security, and urban roads. Monitoring, power department, airport, station monitoring, etc.

[0003] In a high speed dome, a power board and a ball control board are usually provided. Wherein, the power board is fixedly disposed inside the casing of the high speed dome; the ball control board is rotated by the motor, and the imaging device such as the camera fixedly connected thereto is rotated at multiple angles. Thus, the communication signal is transmitted between the ball control board and the power board at a relative rotation or rotation. Currently, the communication connection between the ball control board and the power board is usually achieved by sliding contact with a slip ring mounted at the center of the rotating hole.

[0004] However, the inventors have found through research that during the rotation of the high-speed ball machine, due to the existence of rotational friction, vibration is easily generated at the contact point of the slip ring, resulting in fluctuations and discontinuities of the communication signal, resulting in signal distortion, affecting the signal. Transmission quality.

technical problem

[0005] The present invention mainly provides a monitoring device to solve the technical problem of poor signal transmission quality in the prior art, and improve the transmission rate and reliability.

Problem solution

Technical solution

[0006] In one embodiment, a monitoring device is provided, including a power board, a motor drive board, a slip ring sleeve, and a bearing

And a signal floating transmission rotating device, wherein:

[0007] The outer wall of the slip ring sleeve is fixedly connected to the inner wall of the bearing, and the slip ring sleeve is provided with a slip ring

The slip ring is electrically connected to the power board;

[0008] The signal floating transmission rotating device includes a plug and a socket; the plug is disposed in the slip ring sleeve

And mating with the socket to enable the plug to rotate relative to a central axis of the socket; An optical fiber transmission line is further connected to the plug, so that the optical fiber transmission line is directed to a bottom wall of the socket and transmits a plurality of optical communication signals by wavelength division multiplexing; the socket is disposed on the motor driving board and located at The monitoring device is rotated on a central axis.

[0009] Optionally, the power board includes a first positive pole, a first negative pole, a second positive pole, and a second negative pole; the slip ring sleeve is provided with four slip rings, and the four slip rings are respectively The first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode are electrically connected; the outer wiring of the slip ring is distributed in the wall of the socket, and is driven out from the bottom wall of the socket and driven by the motor The board is electrically connected.

[0010] Optionally, the bearing comprises a double row ball bearing.

[0011] Optionally, the socket is a hollow structure with one end open and the other end closed;

[0012] All or part of the plug is disposed inside the socket, and the plug is a hollow structure with an open end at both ends for providing an optical fiber transmission line inside the plug.

[0013] Optionally, the axial distance between the bottom wall of the plug and the bottom wall of the socket is between 0.5 mm and 1 mm.

[0014] Optionally, the radial distance between the outer wall of the plug extending into the interior of the socket and the inner wall of the socket is between 0.2 mm and 0.5 mm.

[0015] Optionally, a fiber optic signal receiver and/or a fiber optic signal transmitter is disposed on a bottom wall of the socket corresponding to the optical fiber transmission line.

[0016] Optionally, the fiber optic signal transmitter comprises an LED signal transmitter.

[0017] Optionally, the signal floating transmission rotating device further comprises a sleeve, and the sleeve is fixedly or detachably connected to the plug, so that the optical fiber transmission line can be disposed through the sleeve.

[0018] Optionally, the sleeve has the same inner diameter as the plug.

Advantageous effects of the invention

Beneficial effect

[0019] The monitoring device according to the above embodiment, the monitoring device includes a power board, a motor driving board, a slip ring sleeve, a bearing, and a signal floating transmission rotating device; wherein an outer wall of the slip ring sleeve and the The inner wall of the bearing is fixedly connected, the slip ring sleeve is provided with a slip ring, the slip ring is electrically connected to the power board; the signal floating transmission rotating device comprises a plug and a socket; the plug is disposed on the sliding a ring fit in the ring sleeve and mating with the socket to enable the plug to rotate relative to a central axis of the socket An optical fiber transmission line is further connected to the plug, so that the optical fiber transmission line is directed to a bottom wall of the socket and transmits a plurality of optical communication signals by wavelength division multiplexing; the socket is disposed on the motor driving board, and Located on the central axis of rotation of the monitoring device. The fiber-optic wavelength division multiplexing can transmit multiple communication signals to realize high-speed and high-reliability transmission of signals; the socket and the plug cooperate with each other to transmit optical communication signals in a floating connection manner, thereby avoiding the influence of rotational friction on communication signals. Therefore, the signal transmission quality is improved; and the optical fiber wavelength division multiplexing is used to transmit the optical signal to reduce the use of the slip ring, thereby simplifying the structure of the monitoring device.

Brief description of the drawing

DRAWINGS

1 is a schematic structural diagram of a monitoring device according to an embodiment of the present invention;

[0021] FIG. 2 is a partially enlarged schematic structural diagram of a monitoring device according to an embodiment of the present invention;

3 is a schematic structural diagram of a signal floating transmission rotating device according to an embodiment of the present invention;

[0023] The symbols of FIGS. 1 to 3 are expressed as:

1-Socket, 2-plug, 3-fiber transmission line, 4-fiber signal receiver, 5-fiber signal transmitter, 6-sleeve, 7-power board, 8-motor driver board, 9-slip ring Casing, 10-slip ring, 11-bearing, 12-outer wiring.

Embodiments of the invention

DETAILED DESCRIPTION

The present invention will be further described in detail below with reference to the accompanying drawings. Similar elements in different embodiments employ associated similar component numbers. In the following embodiments, many detailed descriptions are made to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features may be omitted in different situations, or may be replaced by other components, materials, and methods. In some cases, some of the operations related to the present application are not shown or described in the specification, in order to avoid that the core portion of the present application is overwhelmed by excessive description, and those skilled in the art will describe these in detail. Related operations are not necessary, they can fully understand the relevant operations according to the description in the manual and the general technical knowledge in the field.

[0027] In addition, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Similarly, each step or action in the method description may also be according to those skilled in the art. The order can be changed or adjusted in a way that is obvious to the staff. Therefore, the various sequences in the specification and the drawings are only for the purpose of describing a particular embodiment and are not intended to

[0028] The serial numbers themselves for the components herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The terms "connection" and "connection" as used in this application include direct and indirect connections (connections) unless otherwise stated.

[0029] In the embodiment of the present invention, the wavelength division multiplexing transmission technology of the optical fiber is used to transmit the multi-channel communication signal through the optical fiber transmission line, and the gap-fitted and floating plug and the socket can realize the contactless and frictionless rotation during use. , use in rotation to avoid the influence of contact fluctuation on signal transmission, improve communication signal transmission quality

[0030] Please refer to FIG. 1, which is a schematic structural diagram of a monitoring device according to an embodiment of the present invention. Referring to FIG. 2, FIG. 2 is a partially enlarged structural diagram of a monitoring device according to an embodiment of the present invention. The monitoring device may be a high speed dome, a pan/tilt machine, etc., as shown in FIG. 1 and FIG. 2, the monitoring device includes a power board 7, a motor driving board 8, a slip ring sleeve 9, a bearing 11, and a signal floating transmission. Rotating device.

[0031] wherein the power board 7 is used to supply power to the monitoring device, and the power board 7 may include electrodes of a plurality of power lines to provide power to the electrical components of the monitoring device. In an exemplary embodiment, the power board 7 may include a first positive electrode, a first negative electrode, a second positive electrode, and a second negative electrode.

[0032] A plurality of slip rings 10 are disposed in the slip ring sleeve 9, and the slip ring 10 is further electrically connected to the power board 7. Specifically, the number of the slip rings 10 may correspond to the number of electrodes of the power board 7, and according to the description of the power board 7, the power board 7 includes a first anode, a first cathode, a second cathode, and a second cathode. Four slip rings 10 may be disposed, and each of the slip rings 10 is electrically connected to the first positive electrode, the first negative electrode, the second positive electrode, and the second negative electrode, respectively. The outer wiring 12 of the slip ring 10 can be distributed in the wall of the socket 1 and is electrically connected from the bottom of the socket 1 to the motor drive board 8. Thus, the motor drive board 8 is rotated relative to the power board 7, and the power board 7 can be electrically connected to the motor drive board 8 via the slip ring 10.

[0033] Of course, it is to be noted that the number of the electrodes of the power supply board 7 and the number of the slip rings 10 may be set to any number, which is not limited in the embodiment of the present invention.

[0034] The bearing 11 is mounted on a central axis of rotation of the monitoring device, the center of the bearing 11 is provided with a slip ring sleeve 9; wherein the central axis of rotation can be understood as the central axis of rotation of the motor drive plate 8 of the monitoring device, or monitoring Assume A rotating member such as a lens is placed around the axis of rotation. In an embodiment, the outer wall of the slip ring sleeve 9 can be directly connected to the inner wall of the bearing 11. Alternatively, the slip ring sleeve 9 can be fixedly connected to the bearing 11 through a sleeve, which is not limited in the embodiment of the invention. In a preferred embodiment, the bearing 11 can be a double row ball bearing such that the bearing 11 is subjected to axial tension on the same axis of rotation about the central axis.

[0035] The motor driving board 8 is used to control the stepping motor to drive the components such as the lens to rotate horizontally. The socket 1 in the signal floating transmission rotating device described in the above embodiment is disposed on the motor driving board 8 and is located at the monitoring device. On the central shaft, the plug 2 in the signal floating transmission rotating device is disposed in the slip ring sleeve 9 and is in clearance with the socket 1, so that the plug 2 can be floated in the socket 1, and the optical fiber transmission line is also connected to the plug 2. 3; wherein, the optical fiber transmission line 3, the plug 2 and the socket 1 are all located on the rotating central axis of the monitoring device; the optical fiber transmission line 3 is disposed in the slip ring sleeve 9 and below the power board 7, above the motor driving board 8, and The optical fiber transmission line 3 and the plug 2 are both fixed and not rotated, and the slip ring 10 is further sleeved on the optical fiber transmission line 3.

Please refer to FIG. 3 , which is a schematic structural diagram of a signal floating transmission rotating device according to an embodiment of the present invention. As shown in FIG. 3 , the signal floating transmission rotating device includes a socket 1 and a plug 2 .

[0037] wherein the socket 1 is a hollow structure with one end open and the other end closed. In the embodiment of the present invention, the closed end of the socket 1 can serve as the bottom end of the socket 1, and the open end of the socket 1 can serve as the top end of the socket 1, and the plug 2 can protrude from the top end of the socket 1. The inside of the socket 1.

[0038] In a specific implementation, part or all of the plug 2 can be inserted into the inside of the socket 1. Moreover, the plug 2 is mated with the socket 1, so that the plug 2 can be floated in the socket 1 and can be rotated relative to the socket 1 during use. In a preferred embodiment, the plug 2 is disposed on the central axis of the socket 1 such that the plug 2 is rotatable relative to the central axis of the socket 1.

[0039] In order to achieve the clearance fit, in the embodiment of the invention, the bottom wall of the plug 2 has an axial distance D1 from the bottom wall of the socket 1, wherein the axial distance D1 can be understood as the axial direction of the socket 1 or the plug 2 The upper spacing D1 is between 0.5 mm and 1 mm; in a preferred embodiment, the axial spacing D1 can be 1 mm. The outer wall of the plug 2 extending into the interior of the socket 1 has a radial distance D2 from the inner wall of the socket 1, wherein the radial spacing D2 can be understood as the radial direction of the socket 1 or the plug 2, or perpendicular to the axis of the socket 1 and the plug 2 The radial spacing D2 is between 0.2 mm and 0.5 mm; in a preferred embodiment, the radial spacing D2 can be 0.35 mm. [0040] The plug 2 is a hollow structure with open ends, so that the optical fiber transmission line 3 can be inserted and disposed inside the plug 2, and the optical fiber transmission line 3 can be directed to the bottom wall of the socket 1 through the alignment of the plug 2 and the socket 1. . Further, in the optical fiber transmission line 3, a multi-channel communication signal is transmitted by Wavelength Division Multiplexing (WDM) technology; in an exemplary embodiment, a wavelength division multiplexing technique using optical fiber transmission is used every A signal is transmitted at 10 nm wavelength (from 1320 nm to 1550 nm). In the transmission of optical signals, there is a high speed, high bandwidth, with 32 channels, 32x2.5Gb transmission, compared to a single tens of K to tens of M electrical signals, can guarantee high-quality transmission, and even if it exceeds 4K HD images can also be transmitted.

Moreover, in order to realize the reception and transmission of the optical communication signal, the information interaction is completed. In an exemplary embodiment, the optical fiber signal receiver 4 is disposed on the inner bottom wall of the socket 1 corresponding to the optical fiber transmission line 3. And/or a fiber optic signal transmitter 5; the fiber optic signal receiver 4 is capable of receiving a plurality of communication signals transmitted by the optical fiber transmission line 3, and transmitting the multi-channel communication signal to other components for signal conversion or the like; the fiber optic signal transmitter 5 The data information transmitted by the other components can be converted into an optical signal and transmitted to the optical fiber transmission line 3 for transmission to the corresponding components through the optical fiber transmission line 3. Wherein, in the embodiment of the invention, the fiber optic signal transmitter 5 can use an LED signal transmitter. Of course, it should be noted that, in the embodiment of the present invention, the number of the optical fiber signal receiver 4 and the optical fiber signal transmitter 5 and the distribution between them are not limited, and those skilled in the art can set any according to the actual signal transmission needs. a plurality of fiber optic signal receivers 4 or fiber optic signal transmitters 5, and a plurality of fiber optic signal receivers 4, or a plurality of fiber optic signal transmitters 5, and a plurality of fiber optic signal receivers 4 and a plurality of fiber optic signal transmitters 5 may be The bottom wall of the socket 1 is evenly or unevenly distributed.

[0042] In addition, in order to protect the optical fiber transmission line 3 and ensure the reliability of signal transmission, in an exemplary implementation, the signal floating transmission rotating device may further include a sleeve 6. In the first embodiment, the sleeve ₆ can be fixedly connected to the plug 2, for example a combination of the sleeve 6 and the plug 2 in one shot. In the second embodiment, the sleeve 6 can be detachably connected to the plug 2, for example, by means of a screw connection or a snap connection, which is not limited in the embodiment of the invention. The sleeve 6 has a hollow structure, and the inner diameter of the sleeve 6 is the same as the inner diameter of the plug 2, and both the sleeve 6 and the plug 2 are matched to the size of the optical fiber transmission line 3, so that the optical fiber transmission line 3 can be disposed through the sleeve 6.

[0043] It can be seen from the description of the foregoing embodiment that a signal floating transmission rotating device provided by an embodiment of the present invention is Includes socket 1 and plug 2. Wherein, the socket 1 is a hollow structure with one end open and the other end closed; all or part of the plug 2 is disposed inside the socket 1, and the plug 2 is in clearance fit with the socket 1 to enable the plug 2 to rotate relative to the central axis of the socket 1. The plug 2 is a hollow structure with open ends, and is used for arranging the optical fiber transmission line 3 inside the plug 2, so that the optical fiber transmission line 3 is directed to the bottom wall of the socket 1 and transmits multi-channel communication signals by fiber wavelength division multiplexing. The fiber-optic wavelength division multiplexing can transmit multiple communication signals to realize high-speed and high-reliability transmission of signals; the socket 1 and the plug 2 rotate with each other to transmit optical communication signals in a floating connection manner, thereby avoiding rotational friction to the communication signals. The effect of this, thereby improving the quality of signal transmission.

[0044] During the rotation of the monitoring device, the same rotation of the power board 7 and the motor driving board 8 can be electrically connected through the slip ring 10 to ensure power supply; that is, the slip ring 10 is only used for power supply, and is not used for transmission. Communication signal. Through the above-mentioned signal floating transmission rotating device, the communication signal is transmitted by the signal floating transmission rotating device, and the multi-channel communication signal can be transmitted by using the fiber wavelength division multiplexing technology, and the communication connection is not required by the slip ring 10; the optical fiber transmission line 3 and the plug 2 are both fixed and not rotated, and the socket 1 rotates relative to the optical fiber transmission line 3 and the plug 2. Since the plug 2 and the socket 1 are arranged in a floating manner without friction, the monitoring device rotates smoothly, but the optical signal can still be completely transmitted.

[0045] Moreover, the monitoring device of the embodiment of the present invention, since it is not required to use a large number of slip rings 10 to transmit signals, for example, can be simplified from the original 28 slip rings to at most only four, that is, the positive poles of the two power lines. The negative poles of the two power lines greatly simplify the structure of the monitoring equipment and better connect the power supply.

[0046] In addition, by using the optical fiber transmission line 3 for signal transmission, the reliability of signal transmission is greatly improved, and signal fluctuation of the slip ring friction and electromagnetic signal interference are avoided. The monitoring device of the embodiment of the invention also increases the transmission rate; the signal transmission rate in the general monitoring device exceeds 70 M/s, and even if a gold-plated slip ring is used, an interference signal is generated; the wavelength division multiplexing technology adopts the optical fiber transmission , transmitting one signal every 10 nanometer wavelength (from 1320 nm to 1550 nm), which has high speed and high bandwidth in transmitting optical signals, enabling up to 32 channels and 32x2.5Gb transmission, thereby increasing the transmission rate. Even high-definition images of more than 4K can be transmitted.

[0047] It can be seen from the description of the foregoing embodiment that the monitoring device includes a power board 7, a motor driving board 8, a slip ring sleeve 9, a bearing 11, and a signal floating transmission rotation. The outer wall of the slip ring sleeve 9 is fixedly connected to the inner wall of the bearing 11. The slip ring sleeve 9 is provided with a slip ring 10, and the slip ring 10 is electrically connected to the power board 7 The signal floating transmission rotating device The plug 2 and the socket 1 are disposed; the plug 2 is disposed in the slip ring sleeve 9 and is in clearance with the socket 1 to enable the plug 2 to rotate relative to the central axis of the socket 1; An optical fiber transmission line 3 is further connected to the plug 2 such that the optical fiber transmission line 3 is directed to the bottom wall of the socket 1 and transmits a plurality of optical communication signals by wavelength division multiplexing; the socket 1 is disposed at the motor drive The plate 8 is located on the central axis of rotation of the monitoring device. The fiber-optic wavelength division multiplexing can transmit multiple communication signals to realize high-speed and high-reliability transmission of signals; the socket 1 and the plug 2 rotate with each other to transmit optical communication signals in a floating connection manner, thereby avoiding rotational friction to the communication signals. The effect of the signal transmission quality is improved, and the optical fiber wavelength division multiplexing is used to transmit the optical signal to reduce the use of the slip ring, thereby simplifying the structure of the monitoring device and reducing the complexity.

The present invention has been described with reference to the specific examples, which are intended to be illustrative of the invention and are not intended to limit the invention. Variations to the above specific embodiments may be made by those skilled in the art in light of the teachings of the present invention.

Claims

Claim

[Claim 1] A monitoring apparatus, comprising: a power board, a motor driving board, a slip ring sleeve, a bearing, and a signal floating transmission rotating device, wherein:

The outer wall of the slip ring sleeve is fixedly connected to the inner wall of the bearing, the slip ring sleeve is provided with a slip ring, and the slip ring is electrically connected to the power board;

The signal floating transmission rotating device includes a plug and a socket; the plug is disposed in the slip ring sleeve and is cooperatively engaged with the socket to enable the plug to rotate relative to a central axis of the socket; An optical fiber transmission line is further connected to the plug, so that the optical fiber transmission line is directed to the bottom wall of the socket and transmits a plurality of optical communication signals by wavelength division multiplexing; the socket is disposed on the motor driving board and located at the The monitoring device of claim 1 , wherein the power board comprises a first positive electrode, a first negative electrode, a second positive electrode, and a second negative electrode; There are four slip rings, and the four slip rings are electrically connected to the first positive electrode, the first negative electrode, the second positive electrode and the second negative electrode respectively; the outer wires of the slip ring are distributed in the wall of the socket. And electrically connected from the bottom wall of the socket to the motor driving board.

The monitoring apparatus according to claim 1, wherein said bearing comprises a double row ball bearing.

A monitoring device according to claim 1, wherein

The socket is a hollow structure with one end open and the other end closed; all or part of the plug is disposed inside the socket, and the plug is a hollow structure with open ends, and is used for setting inside the plug Optical fiber transmission line.

The monitoring apparatus according to claim 1, wherein an axial distance between a bottom wall of said plug and a bottom wall of said socket is between 0.5 mm and 1 mm.

The monitoring apparatus according to claim 1, wherein a radial distance between an outer wall of the plug extending into the interior of the socket and an inner wall of the socket is between 0.2 mm and 0.5 mm. The monitoring device according to claim 1, wherein a fiber optic signal receiver and/or an optical fiber signal is disposed on a bottom wall of the socket corresponding to the optical fiber transmission line. Projector.

[Claim 8] The monitoring device according to claim 7, wherein the fiber optic signal transmitter comprises an LED signal transmitter.

[Claim 9] The monitoring apparatus according to claim 1, wherein the signal floating transmission rotating device further includes a sleeve, and the sleeve is fixedly or detachably coupled to the plug to enable the A fiber optic transmission line can be disposed through the sleeve.

[Claim 10] The monitoring apparatus according to claim 9, wherein the sleeve has the same inner diameter as the plug.