WO2017063375A1 - 信号传输装置、云台和摄像机 - Google Patents

信号传输装置、云台和摄像机 Download PDF

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WO2017063375A1
WO2017063375A1 PCT/CN2016/085441 CN2016085441W WO2017063375A1 WO 2017063375 A1 WO2017063375 A1 WO 2017063375A1 CN 2016085441 W CN2016085441 W CN 2016085441W WO 2017063375 A1 WO2017063375 A1 WO 2017063375A1
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signal
conditioning circuit
transmission
signal conditioning
module
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PCT/CN2016/085441
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English (en)
French (fr)
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刘重斌
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杭州海康威视数字技术股份有限公司
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Publication of WO2017063375A1 publication Critical patent/WO2017063375A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

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  • the present application relates to the field of signal processing, and in particular to a signal transmission device, a pan/tilt head and a video camera.
  • PTZ or PTZ camera devices are often seen in the security field. Due to the unique PT (Pan and Tilt) pan/tilt structure of the PTZ or PTZ camera device, there is inevitably relative motion between the components of the device. At this time, the conductive slip ring emerges. However, due to the more demanding process requirements of the conductive slip ring, the manufacturing cost is always higher, and the cost of the single-channel manufacturing is even higher than that of some integrated circuits (IC) chips, especially in the manufacturing cost. The more demanding today, the savings in the number of conductive slip ring cores has become one of the more effective ways for manufacturers to reduce costs.
  • IC integrated circuits
  • the conductive slip ring transmission is mainly digital signal, and the amount of data is not large, and the real-time performance requirements are not too high, for example, Universal Asynchronous Receiver/Transmitter (UART), integrated circuit Inter-Integrated Circuit (IIC), Serial Peripheral Interface (SPI), Integrated Interface of Sound (IIS), General Purpose Input Output , referred to as GPIO) and other signals.
  • UART Universal Asynchronous Receiver/Transmitter
  • IIC integrated circuit Inter-Integrated Circuit
  • SPI Serial Peripheral Interface
  • IIS Integrated Interface of Sound
  • GPIO General Purpose Input Output
  • the conventional practice of conductive slip rings is to transmit signals that need to be transmitted through separate physical links, that is, UART signal transmission monopolizes two slip rings, IIC signal transmission monopolizes two slip rings, and SPI signal transmission monopolizes.
  • IIS signal transmission monopolizes 2 to 3 slip rings
  • GPIO signals monopolize 1 slip ring
  • the transmission bandwidth of the conductive slip ring is greatly wasted, and the slip ring may be in an idle state for most of the time, which is very disadvantageous for cost saving.
  • the main purpose of the present application is to provide a signal transmission device, a cloud platform, and a camera to solve the problem that the transmission bandwidth of the conductive slip ring in the related art is greatly wasted.
  • a signal transmission apparatus includes: a conductive slip ring; a first signal conditioning circuit connected to the first end of the conductive slip ring; and a second signal conditioning circuit connected to the second end of the conductive slip ring, wherein the first signal conditioning circuit And the second signal conditioning circuit is configured to modulate the multiplexed signal, and the conditioned multi-path transmission signal is transmitted through the transmission channel of the same conductive slip ring.
  • the first signal conditioning circuit includes: a plurality of peripheral interfaces for inputting the multiplexed signal; a clock control module for controlling the transmission timing of the multiplexed signal; and a data transmitting module, the first of the data transmitting module
  • the terminal is connected to the plurality of peripheral interfaces, and the second end of the data sending module is connected to the second signal conditioning circuit via the conductive slip ring, and the data sending module is configured to send the multiplexed signal to the second signal conditioning circuit according to the transmission timing.
  • the second signal conditioning circuit comprises: a data receiving module connected to the data transmitting module for receiving the multiplexed signal; and a plurality of peripheral interfaces for outputting the multiplexed signal.
  • the first signal conditioning circuit further includes: a logic management module, configured to logically divide the transmission channel of the conductive slip ring.
  • the logic management module is a programmable logic device.
  • the first signal conditioning circuit comprises: a plurality of peripheral interfaces for inputting multiplexed signals; an encoding module connected to the plurality of peripheral interfaces for encoding the multiplexed signals; and a data transmitting module, connecting To the encoding module, for transmitting the encoded multiplexed signal.
  • the second signal conditioning circuit comprises: a data receiving module connected to the data transmitting module of the first signal conditioning circuit; and a decoding module connected to the data receiving module for decoding the received multiplexed signal; A peripheral interface for outputting the decoded multiplexed signal.
  • the first signal conditioning circuit includes: a plurality of peripheral interfaces for inputting the multiplexed signal; the frequency modulation module is connected to the plurality of peripheral interfaces for modulating the transmission frequency band of the multiplexed signal; and transmitting the data Module, the first end of the data sending module is connected to the frequency modulation module, data The second end of the transmitting module is connected to the second signal conditioning circuit via the conductive slip ring for transmitting the multiplexed signal to the second signal conditioning circuit according to the transmission frequency band of the multiplexed signal.
  • the second signal conditioning circuit comprises: a data receiving module connected to the data transmitting module for receiving the multiplexed signal according to the transmission frequency band; and a plurality of peripheral interfaces for outputting the multiplexed signal.
  • first signal conditioning circuit or the second signal conditioning circuit is a single chip microcomputer.
  • a cloud platform which includes the above-described signal transmission device.
  • a video camera including the above-described pan/tilt head is provided.
  • a signal transmission device comprising: a conductive slip ring; a first signal conditioning circuit connected to the first end of the conductive slip ring; and a second signal conditioning circuit connected to the second end of the conductive slip ring,
  • the first signal conditioning circuit and the second signal conditioning circuit are used for conditioning the multiplexed signal, and the conditioned multi-path transmission signal is transmitted through the transmission channel of the same conductive slip ring, thereby solving the related art in the conductive slip ring.
  • the transmission bandwidth has a large waste problem, and the effect of multiplexing the transmission channel of the conductive slip ring is achieved.
  • FIG. 1 is a schematic diagram of a signal transmission apparatus according to a first embodiment of the present application.
  • FIG. 2 is a schematic diagram of a signal transmission apparatus according to a second embodiment of the present application.
  • FIG. 3 is a schematic diagram of logical channel division according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a signal transmission apparatus according to a third embodiment of the present application.
  • FIG. 5 is a schematic diagram of a cloud platform according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a video camera according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a signal transmission apparatus according to a first embodiment of the present application.
  • the signal transmission device includes a conductive slip ring 1011, a first signal conditioning circuit 1012 and a second signal conditioning circuit 1013.
  • the first signal conditioning circuit 1012 is connected to the first end of the conductive slip ring 1011, and the second signal conditioning circuit 1013 is connected to the second end of the conductive slip ring 1011, wherein the first signal conditioning circuit 1012 and the second signal conditioning circuit 1013 is used for conditioning the multiplexed signal, and the conditioned multi-path transmission signal is transmitted through the transmission channel of the same conductive slip ring, wherein the transmission signal is preferably a signal with a small amount of data and a low transmission rate requirement, for example, , UART signal, IIC signal, SPI signal, GPIO signal, etc.
  • the multiplexed signal can be conditioned by the first signal conditioning circuit 1012 and the second signal conditioning circuit 1013, so that the multiplexed signal can pass through the same conductive slip.
  • the transmission channel of the ring is transmitted.
  • the first signal conditioning circuit 1012 and the second signal conditioning circuit 1013 select an appropriate transmission period to place different peripheral signal data packets, that is, data packets of the multiplexed signal, in one transmission period. Transmitting on a specific time stamp; or selecting an appropriate transport address to place different peripheral signal packets in a specific address frame for transmission; or selecting a suitable code segment to pass the peripheral signal packet Placed in a specific code segment for transmission, etc.
  • the embodiment of the present application passes the signal transmission device including the following structure: a conductive slip ring; a first signal conditioning circuit connected to the first end of the conductive slip ring; and a second signal conditioning circuit connected to the second end of the conductive slip ring,
  • the first signal conditioning circuit and the second signal conditioning circuit are used for conditioning the multiplexed signal, and the conditioned multi-path transmission signal is transmitted through the transmission channel of the same conductive slip ring, so that the transmission channel of the same conductive slip ring can be
  • the transmission of the multiplexed signal solves the problem that the transmission bandwidth of the conductive slip ring in the related art is greatly wasted, thereby achieving the effect of multiplexing the transmission channel of the conductive slip ring.
  • the first signal conditioning circuit comprises: a plurality of peripheral interfaces for inputting the multiplexed signal; a clock control module for controlling the transmission timing of the multiplexed signal; and a data transmitting module, the first of the data transmitting module
  • the terminal is connected to the plurality of peripheral interfaces, and the second end of the data sending module is connected to the second signal conditioning circuit via the conductive slip ring, and the data sending module is configured to send the multiplexed signal to the second signal conditioning circuit according to the transmission timing.
  • the multiplexed transmission signal is transmitted through the transmission channel of the same conductive slip ring by means of time division multiplexing.
  • the first signal conditioning circuit is responsible for multiplexing the signal, the possible form of the digital logic signal of various forms, and compressing it to a port for transmission, the corresponding number can be set on the first signal conditioning circuit.
  • a peripheral interface for logic signal access for example, a peripheral interface such as a UART interface, an IIC interface, an SPI interface, and a GPIO interface, that is, the first signal conditioning circuit needs to include a plurality of peripheral interfaces.
  • the first signal conditioning circuit can be set.
  • a certain clock distribution and management function that is, the first signal conditioning circuit includes a clock control module.
  • the clock control module can be a timer.
  • the second signal conditioning circuit comprises: a data receiving module, a data sending module connected to the first signal conditioning circuit, configured to receive the multiplexed signal; and a plurality of peripheral interfaces for outputting the multiplexed signal.
  • the second signal conditioning circuit outputs through a plurality of peripheral interfaces after receiving the multiplexed signal Multiplex signals.
  • the embodiment of the present application receives the multi-channel transmission signal through multiple peripheral interfaces, controls the transmission timing of the multi-channel transmission signal through the clock control module, and transmits the multi-channel transmission signal through the same conductive slip ring according to the transmission timing by the data transmission module. To the second signal conditioning circuit, so that the multiplexed signals are transmitted through the transmission channel of the same conductive slip ring in a time division multiplexing manner.
  • the first signal conditioning circuit further includes: a logic management module, configured to logically divide the transmission channel of the conductive slip ring.
  • the first conditioning circuit since a plurality of peripheral data (ie, multiplexed signals) are compressed and transmitted on one physical transmission channel, logical channel division of the physical transmission channel is inevitably required. Therefore, if the first conditioning circuit has certain logic
  • the management function that is, the first conditioning circuit includes a logic management module
  • the logic management module is a programmable logic device.
  • the programmable logic device may be a Programmable Logic Controller (PLC), a Programmable Logic Array (PLA), or the like.
  • PLC Programmable Logic Controller
  • PLA Programmable Logic Array
  • first signal conditioning circuit and the second signal conditioning circuit in the embodiment of the present application may be a circuit that is overlapped by a separate circuit component, or may be an Application Specific Integrated Circuit (ASIC) chip. It can also be a microcontroller (Microcontroller Unit, MCU for short).
  • ASIC Application Specific Integrated Circuit
  • FIG. 2 is a schematic diagram of a signal transmission apparatus according to a second embodiment of the present application.
  • the first signal conditioning circuit and the second signal conditioning circuit of the signal transmission device are STM8 single-chip microcomputers, and the transmission channels of the conductive slip rings are between the two STM8 single-chip microcomputers.
  • the STM8 microcontroller is a low-cost microcontroller with a wealth of peripheral resources.
  • the multiplexed signals of the UART, the IIC, the SPI, and the GPIO can be time-multiplexed to the same physical transmission channel through the STM8 single-chip microcomputer, and transmitted to the other side of the conductive slip ring through the unique physical transmission channel.
  • the STM8 MCU also has logic control and task management functions, the physical transmission channel used for data transmission can be a custom single-line transmission channel, or a transmission channel for data and clock reference transmission between the two wires. It can be idle or idle UART, IIC, SPI transmission channel, etc.
  • FIG. 3 is a schematic diagram of logical channel division according to an embodiment of the present application.
  • the UARTn downlink frame, the IIC downlink frame, and the GPIO downlink frame are transmitted on the n0th, n1, and n2 timestamps respectively;
  • the UARTn uplink frame and the IICn uplink are transmitted on the m0, m1, and m2 timestamps, respectively.
  • the logical channel division includes the following steps:
  • step S1 the communication cycle of the physical transmission channel is set according to the system performance requirement, that is, the physical transmission channel transmits and receives data every TIME.
  • step S2 the communication period TIME of one physical transmission channel is divided into a plurality of fixed or variable length time segments, and each time segment is a logical channel for transmitting one frame of peripheral data, that is, one frame transmission signal.
  • the data volume of a control signal frame with a higher real-time requirement is generally about 80 bits. It can be seen that the amount of data that can be transmitted in Table 1 can fully meet the practical application requirements.
  • the multiplexed signal is conditioned by the single-chip microcomputer, so that the multiplexed signal can be transmitted through a physical transmission channel of a single conductive slip ring in a time-sharing manner, compared with various signals that need to be transmitted in the prior art.
  • the separate physical links are transmitted, the circuit structure is simplified, the transmission signal control is simpler, and the signal transmission efficiency is higher.
  • the signal transmission apparatus of the embodiment of the present application can implement multiplexing of signals.
  • the bidirectional transmission that is, the multiplexed signal may be transmitted from the first signal conditioning circuit to the second signal conditioning circuit via the unique physical transmission channel, or may be transmitted from the second signal conditioning circuit to the first signal conditioning circuit via the unique physical transmission channel .
  • the first signal conditioning circuit comprises: a plurality of peripheral interfaces for inputting the multiplexed signals; an encoding module connected to the plurality of peripheral interfaces for encoding the multiplexed signals; and a data sending module, Connected to the encoding module for transmitting the encoded multiplexed signal.
  • the multiplexed transmission signal is transmitted through the same physical transmission channel by encoding the multiplexed signal.
  • the encoding module may encode the multiplexed signal into the same data frame for transmission, for example, placing the multiplexed signal in a specific address frame for transmission, or placing the multiplexed signal in a specific code. Transfer in the segment.
  • the multiplexed signal includes three kinds of transmission signals: UART, IIC and GPIO.
  • the first signal conditioning circuit encodes the three transmission signals through the coding module, wherein the coded
  • the data frame format is: address, interface type, and data packet.
  • the data frames encoded by the three transmission signals of UART, IIC and GPIO are: 0x000, UART interface, UART data packet, 0x002, IIC interface, IIC data packet, 0x004, GPIO interface, GPIO data packet.
  • the encoded multiplexed signal is transmitted to the second signal conditioning circuit through the data transmission module through a unique physical transmission channel.
  • the second signal conditioning circuit comprises: a data receiving module connected to the data sending module of the first signal conditioning circuit; and a decoding module connected to the data receiving module for decoding the received multiplexed signal; Multiple peripheral interfaces for outputting decoded multiplexed signals.
  • the second signal conditioning circuit After receiving the encoded multiplexed signal, the second signal conditioning circuit decodes the encoded multiplexed signal through the decoding module, realizes restoration of the multiplexed signal, and outputs the decoded through a plurality of peripheral interfaces. Multiplex signals.
  • both the encoding module and the decoding module in the embodiments of the present application may be programmable logic devices.
  • the first signal conditioning circuit comprises: a plurality of peripheral interfaces for inputting the multiplexed signal; and the frequency modulation module is connected to the plurality of peripheral interfaces for performing the transmission frequency band of the multiplexed signal And a data sending module, the first end of the data sending module is connected to the frequency modulation module, and the second end of the data sending module is connected to the second signal conditioning circuit via the conductive slip ring for transmitting according to the transmission frequency band of the multiplexed signal The road transmits a signal to the second signal conditioning circuit.
  • the second signal conditioning circuit comprises: a data receiving module, connected to the data sending module in the first signal conditioning circuit, configured to receive the multiplexed signal according to the transmission frequency band; and multiple peripheral interfaces for outputting multiple channels Transmission signal.
  • the second signal conditioning circuit After receiving the multiplexed signal, the second signal conditioning circuit outputs the multiplexed signal through a plurality of peripheral interfaces.
  • the multiplexed signal is transmitted on the same physical transmission channel by modulating the multiplexed signal to different transmission bands for transmission. Specifically, after receiving the multiplexed signal, the first signal conditioning circuit modulates a transmission frequency band of the multiplexed signal through the frequency modulation module, and sends the multiplexed transmission signal according to the transmission frequency band of the multiplexed transmission signal by the data sending module. The same conductive slip ring is transmitted to the second signal conditioning circuit.
  • FIG. 4 is a schematic diagram of a signal transmission apparatus according to a third embodiment of the present application.
  • some of the required signal clusters (for example, UART, IIC, SPI, GPIO, etc., which occupy a lower bandwidth digital signal) are connected to the signal conditioning circuit at one end of the conductive slip ring, and the signal cluster is connected to one end of the conductive slip ring.
  • the signal conditioning circuit After the signal conditioning circuit is conditioned, it is transmitted from one physical channel of the conductive slip ring to the other end of the conductive slip ring, and then outputted from the signal conditioning circuit at the other end of the conductive slip ring, and the characteristics of the entire signal cluster remain substantially unchanged on both sides of the signal transmission device.
  • the signal conditioning circuits at both ends of the conductive slip ring may be the same or different.
  • the embodiment of the present application compresses a digital signal with a small amount of data and occupies a transmission bandwidth of a lower conductive slip ring to a physical channel for transmission, so as to save the material cost of the product.
  • the first signal conditioning circuit and the second signal conditioning circuit in the embodiments of the present application may be the same, for example, in a manner of time division multiplexing to realize multiplexing of signals through the same conductive
  • the first signal conditioning circuit and the second signal conditioning circuit each include a plurality of peripheral interfaces, a data transmitting module, a data receiving module, and a clock control module; and encoding the multiplexed signal by encoding
  • the first signal conditioning circuit and the second signal conditioning circuit each include a plurality of peripheral interfaces, a data transmitting module, a data receiving module, an encoding module, and a decoding module.
  • the first signal conditioning circuit and the second signal conditioning circuit perform conditioning on the multiplexed signal, so that the multiplexed signal can be transmitted through the transmission channel of the same conductive slip ring, thereby saving conduction.
  • the cost of the slip ring material solves the problem that the transmission bandwidth of the conductive slip ring in the related art is greatly wasted, thereby achieving the effect of multiplexing the transmission channel of the conductive slip ring.
  • a cloud platform is further provided, and the cloud platform includes the above signal transmission device.
  • FIG. 5 is a schematic diagram of a pan/tilt head according to an embodiment of the present application.
  • the cloud platform 10 includes any one of the signal transmission devices 110 in the above embodiments. The structure and operation principle of the signal transmission device 110 have been described in detail in the foregoing embodiments, and details are not described herein again.
  • the cloud platform of the embodiment of the present invention can realize the transmission of the multiplexed signal through the physical transmission channel of the same conductive slip ring through the signal transmission device, thereby saving the material cost of the conductive slip ring, further reducing the cost of the cloud platform, and solving the related In the technology, the transmission bandwidth of the conductive slip ring is greatly wasted, and the effect of the transmission channel multiplexing of the conductive slip ring is achieved.
  • FIG. 6 is a schematic diagram of a video camera according to an embodiment of the present application.
  • the camera 1 includes the pan/tilt head 10 in the above embodiment.
  • the camera 1 of the embodiment of the present invention can realize the transmission of the multiplexed signal through the physical transmission channel of the same conductive slip ring through the cloud platform 10 in the above embodiment, thereby saving the material cost of the conductive slip ring and further reducing the cost of the camera.
  • the invention solves the problem that the transmission bandwidth of the conductive slip ring in the related art is greatly wasted, thereby achieving the effect of multiplexing the transmission channel of the conductive slip ring.
  • the disclosed technical contents may be implemented in other manners.
  • the device embodiments described above are only schematic.
  • the division of the unit may be a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, unit or module. It can be in electrical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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Abstract

本申请公开了一种信号传输装置、云台和摄像机。其中，该信号传输装置包括：导电滑环；第一信号调理电路，连接至导电滑环的第一端；以及第二信号调理电路，连接至导电滑环的第二端，其中，第一信号调理电路和第二信号调理电路用于对多路传输信号进行调理，调理后的多路传输信号通过同一导电滑环的传输通道进行传输。本申请解决了相关技术中导电滑环的传输带宽存在较大浪费的技术问题，进而达到了复用导电滑环的传输通道的效果。

Description

信号传输装置、云台和摄像机
本申请要求于2015年10月16日提交中国专利局、申请号为201520803362.4发明名称为“信号传输装置、云台和摄像机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及信号处理领域，具体而言，涉及一种信号传输装置、云台和摄像机。
背景技术
在安防领域里经常可见云台或者云台摄像机装置。由于云台或者云台摄像机装置独特的PT(即Pan and Tilt)云台构造，设备自身组件之间不可避免地存在着相对运动，此时，导电滑环应运而生。但是，由于导电滑环自身较为苛刻的工艺要求，其制作成本一直较高，其单路制作成本价格甚至远高于一些集成电路(Integrated Circuit，简称为IC)芯片，尤其在制造业成本要求越来越苛刻的今天，节省导电滑环芯数也成为制造商们降低成本的比较有效方法之一。
在球形摄像机内部，导电滑环传输主要是数字信号，而且数据量不是很大，实时性能要求也不是太高，例如，通用异步收发传输器(Universal Asynchronous Receiver/Transmitter，简称为UART)，集成电路总线(Inter-Integrated Circuit，简称为IIC)，串行外设接口(Serial Peripheral Interface，简称为SPI)，集成音频接口(Integrate Interface of Sound，简称为IIS)，通用输入/输出(General Purpose Input Output，简称为GPIO)等信号。目前过导电滑环比较常规的做法是对各种需要传输的信号通过各自单独的物理链路进行传输，即UART信号传输独占两根滑环，IIC信号传输独占两根滑环，SPI信号传输独占3～4根滑环，IIS信号传输独占2～3根滑环，GPIO信号独占1根滑环等等。这种方式会导致导电滑环的传输带宽的较大浪费，在大部分的时间里滑环可能都处于空闲状态，对于节省成本是非常不利的。
针对相关技术中导电滑环的传输带宽存在较大浪费的问题，目前尚未提出有效的解决方案。
发明内容
本申请的主要目的在于提供一种信号传输装置、云台和摄像机，以解决相关技术中导电滑环的传输带宽存在较大浪费的问题。
为了实现上述目的，根据本申请的一个方面，提供了一种信号传输装置。该信号传输装置包括：导电滑环；第一信号调理电路，连接至导电滑环的第一端；以及第二信号调理电路，连接至导电滑环的第二端，其中，第一信号调理电路和第二信号调理电路用于对多路传输信号进行调理，调理后的多路传输信号通过同一导电滑环的传输通道进行传输。
进一步地，第一信号调理电路包括：多个外设接口，用于输入多路传输信号；时钟控制模块，用于控制多路传输信号的传输时序；以及数据发送模块，数据发送模块的第一端连接至多个外设接口，数据发送模块的第二端经由导电滑环连接至第二信号调理电路，数据发送模块用于根据传输时序发送多路传输信号至第二信号调理电路。
进一步地，第二信号调理电路包括：数据接收模块，连接至数据发送模块，用于接收多路传输信号；多个外设接口，用于输出多路传输信号。
进一步地，第一信号调理电路还包括：逻辑管理模块，用于对导电滑环的传输通道进行逻辑划分。
进一步地，逻辑管理模块为可编程逻辑器件。
进一步地，第一信号调理电路包括：多个外设接口，用于输入多路传输信号；编码模块，连接至多个外设接口，用于对多路传输信号进行编码；以及数据发送模块，连接至编码模块，用于发送编码后的多路传输信号。
进一步地，第二信号调理电路包括：数据接收模块，连接至第一信号调理电路的数据发送模块；解码模块，连接至数据接收模块，用于对接收到的多路传输信号进行解码；以及多个外设接口，用于输出解码后的多路传输信号。
进一步地，第一信号调理电路包括：多个外设接口，用于输入多路传输信号；调频模块，连接至多个外设接口，用于对多路传输信号的传输频带进行调制；以及数据发送模块，数据发送模块的第一端连接至调频模块，数据 发送模块的第二端经由导电滑环连接至第二信号调理电路，用于根据多路传输信号的传输频带发送多路传输信号至第二信号调理电路。
进一步地，第二信号调理电路包括：数据接收模块，连接至数据发送模块，用于根据传输频带接收多路传输信号；多个外设接口，用于输出多路传输信号。
进一步地，第一信号调理电路或第二信号调理电路为单片机。
为了实现上述目的，根据本申请的另一方面，提供了一种云台，该云台包括上述信号传输装置。
为了实现上述目的，根据本申请的又一方面，提供了一种摄像机，该摄像机包括上述云台。
通过本申请，采用包括如下结构的信号传输装置：导电滑环；第一信号调理电路，连接至导电滑环的第一端；以及第二信号调理电路，连接至导电滑环的第二端，其中，第一信号调理电路和第二信号调理电路用于对多路传输信号进行调理，调理后的多路传输信号通过同一导电滑环的传输通道进行传输，解决了相关技术中导电滑环的传输带宽存在较大浪费的问题，进而达到了复用导电滑环的传输通道的效果。
附图说明
构成本申请的一部分的附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据本申请第一实施例的信号传输装置的示意图；
图2是根据本申请第二实施例的信号传输装置的示意图；
图3是根据本申请实施例的逻辑通道划分的示意图；
图4是根据本申请第三实施例的信号传输装置的示意图；
图5是根据本申请实施例的云台的示意图；
图6是根据本申请实施例的摄像机的示意图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
根据本申请实施例，提供了一种信号传输装置，图1是根据本申请第一实施例的信号传输装置的示意图。如图1所示，该信号传输装置包括：导电滑环1011，第一信号调理电路1012和第二信号调理电路1013。
第一信号调理电路1012，连接至导电滑环1011的第一端，第二信号调理电路1013，连接至导电滑环1011的第二端，其中，第一信号调理电路1012和第二信号调理电路1013用于对多路传输信号进行调理，调理后的多路传输信号通过同一导电滑环的传输通道进行传输，其中，传输信号优选为数据量不大且对传输速率要求不高的信号，例如，UART信号、IIC信号、SPI信号、GPIO信号等等。
具体地，在保证系统要求实时性能的前提下，本申请实施例可以通过第一信号调理电路1012和第二信号调理电路1013对多路传输信号进行调理，使得多路传输信号可以通过同一导电滑环的传输通道进行传输。例如，通过第一信号调理电路1012和第二信号调理电路1013选择恰当的传输周期，将不同的外设信号数据包，即多路传输信号的数据包，放置于一个传输周期内 特定的时间戳上进行传输；或者选择恰当的传输地址，将不同的外设信号数据包放置于一个特定的地址帧内进行传输；还可以选择合适的编码段，将不通的外设信号数据包放置于特定的编码片段中进行传输等。
本申请实施例通过包括如下结构的信号传输装置：导电滑环；第一信号调理电路，连接至导电滑环的第一端；以及第二信号调理电路，连接至导电滑环的第二端，其中，第一信号调理电路和第二信号调理电路用于对多路传输信号进行调理，调理后的多路传输信号通过同一导电滑环的传输通道进行传输，使得同一导电滑环的传输通道可以传输多路传输信号，解决了相关技术中导电滑环的传输带宽存在较大浪费的问题，进而达到了复用导电滑环的传输通道的效果。
优选地，第一信号调理电路包括：多个外设接口，用于输入多路传输信号；时钟控制模块，用于控制多路传输信号的传输时序；以及数据发送模块，数据发送模块的第一端连接至多个外设接口，数据发送模块的第二端经由导电滑环连接至第二信号调理电路，数据发送模块用于根据传输时序发送多路传输信号至第二信号调理电路。
本申请实施例通过分时复用的方式实现多路传输信号通过同一个导电滑环的传输通道进行传输。具体地，由于第一信号调理电路要负责将多路传输信号，可能的表现形式为多种形态的数字逻辑信号，压缩到一个端口上进行传输，那么可在第一信号调理电路上设置相应数字逻辑信号接入的外设接口，例如，UART接口、IIC接口、SPI接口和GPIO接口等外设接口，即第一信号调理电路需要包括多个外设接口。此外，由于多个外设接口的数据(即多路传输信号)压缩到一个传输通道内传输，且要保证在一定时间内要有响应(即满足实时性)，那么第一信号调理电路可设置一定时钟分配及管理功能，即第一信号调理电路包括时钟控制模块。可选地，时钟控制模块可以是定时器。
可选的，第二信号调理电路包括：数据接收模块，连接至第一信号调理电路的数据发送模块，用于接收多路传输信号；多个外设接口，用于输出多路传输信号。
第二信号调理电路在接收到多路传输信号之后，通过多个外设接口输出 多路传输信号。
本申请实施例通过多个外设接口接收多路传输信号，通过时钟控制模块进行多路传输信号的传输时序的控制，以及通过数据发送模块按照传输时序发送多路传输信号经同一导电滑环传输至第二信号调理电路，从而实现多路传输信号按照时分复用的方式通过同一导电滑环的传输通道进行传输。
优选地，第一信号调理电路还包括：逻辑管理模块，用于对导电滑环的传输通道进行逻辑划分。
具体地，由于多个外设数据(即多路传输信号)压缩在一个物理传输通道上进行传输，不可避免地需要对物理传输通道进行逻辑通道的划分，因此，如果第一调理电路具备一定逻辑管理功能(即第一调理电路包括逻辑管理模块)，那么进行逻辑通道划分时可以更加灵活和更加多样。可选地，逻辑管理模块为可编程逻辑器件。
例如，可编程逻辑器件可以是可编程逻辑控制器(Programmable Logic Controller，简称为PLC)、可编程逻辑阵列(Programmable Logic Array，简称为PLA)等。
需要说明的是，本申请实施例的第一信号调理电路和第二信号调理电路可以是通过分离电路元件搭接的电路，也可以是专用集成电路(Application Specific Integrated Circuit，简称为ASIC)芯片，也可以是单片机(Microcontroller Unit，简称为MCU)等。
图2是根据本申请第二实施例的信号传输装置的示意图。如图2所示，该信号传输装置的第一信号调理电路和第二信号调理电路均为STM8单片机，两个STM8单片机之间为导电滑环的传输通道。
具体地，STM8单片机是一款低成本的单片机，具有丰富的外设资源。本申请实施例通过STM8单片机可实现UART、IIC、SPI、GPIO等多路传输信号分时复用到同一物理传输通道上，并通过该唯一的物理传输通道传输到导电滑环的另一侧。由于STM8单片机还具有逻辑控制及任务管理功能，因此，用来进行数据传输的物理传输通道可以是自定义的单线传输通道，也可以是两根线分别实现数据和时钟参考传输的传输通道，也可以是空闲或者闲置的UART、IIC、SPI传输通道等。
本申请实施例在将调理后的多路传输信号通过同一个物理传输通道进行传输时，需要预先进行逻辑通道划分，从而使得不同的传输信号在不同的逻辑通道上进行传输。具体地，逻辑通道划分的方法有多种，图3是根据本申请实施例的逻辑通道划分的示意图。如图3所示，分别在第n0、n1和n2个时间戳上传输UARTn下行帧、IIC下行帧和GPIO下行帧；分别在第m0、m1和m2个时间戳上传输UARTn上行帧、IICn上行帧和GPIO上行帧。其中，逻辑通道划分包括如下步骤：
步骤S1，根据系统性能要求设定物理传输通道的通信周期TIME，即物理传输通道每隔TIME时间都会收发一次数据。
步骤S2，将一个物理传输通道的通信周期TIME划分为多个固定或者可变长度的时间片段，每一个时间片段为一个逻辑通道，用于发送一帧外设数据即一帧传输信号。
以安防设备为例，通常要求安防设备的物理传输通道的通信周期为200ms，即TIME＝200ms，假设把物理传输通道等分20个逻辑通道，则每个逻辑通道时间为10ms。在完成逻辑通道划分后，可以按照表1所示参数进行多路数据传输即进行多路信号传输：
表1
接口类型 传输速率 传输效率(％) 数据量/通道
UART 38400bps 80 384bit
IIC 400kbps 80 3200bit
SPI 200kbps 80 1600bit
GPIO 20kbps 20 40bit
按照现有的一些常用安防协议指令帧计算，一般实时要求较高的控制信号帧一帧数据量一般80bit左右，由此可以看出表1中可传输数据量完全可以满足实际应用需求。
本申请实施例通过单片机对多路传输信号进行调理，使得多路传输信号可以分时通过单一的导电滑环的物理传输通道进行传输，相比于现有技术中对各种需要传输的信号通过各自单独的物理链路进行传输，实现的电路结构更为简化，传输信号控制也更为简单且信号传输效率更高。
需要说明的是，本申请实施例的信号传输装置可以实现多路传输信号的 双向传输，即多路传输信号可以从第一信号调理电路经由唯一的物理传输通道传输至第二信号调理电路，也可以从第二信号调理电路经由唯一的物理传输通道传输至第一信号调理电路。
可选地，第一信号调理电路包括：多个外设接口，用于输入多路传输信号；编码模块，连接至多个外设接口，用于对多路传输信号进行编码；以及数据发送模块，连接至编码模块，用于发送编码后的多路传输信号。
本申请实施例通过对多路传输信号进行编码的方式实现多路传输信号通过同一物理传输通道传输。可选地，编码模块可以将多路传输信号编码至同一数据帧中进行传输，例如，将多路传输信号放置于特定的地址帧内进行传输，或是将多路传输信号放置于特定的编码段中进行传输。以下以将多路传输信号放置于特定的地址帧内进行传输为例对本申请实施例进行说明：
多路传输信号包括UART、IIC和GPIO三种传输信号，第一信号调理电路接收到UART、IIC和GPIO三种传输信号之后，通过编码模块对这三种传输信号进行编码，其中，编码后的数据帧格式为：地址，接口类型，数据包。UART、IIC和GPIO三种传输信号编码后的数据帧为：0x000，UART接口，UART数据包，0x002，IIC接口，IIC数据包，0x004，GPIO接口，GPIO数据包。
本申请实施例在编码模块对多路传输信号进行编码后，通过数据发送模块将编码后的多路传输信号通过唯一的物理传输通道传输至第二信号调理电路。可选地，第二信号调理电路包括：数据接收模块，连接至第一信号调理电路的数据发送模块；解码模块，连接至数据接收模块，用于对接收到的多路传输信号进行解码；以及多个外设接口，用于输出解码后的多路传输信号。
第二信号调理电路在接收到编码后的多路传输信号之后，通过解码模块对编码后的多路传输信号进行解码，实现多路传输信号的还原，并通过多个外设接口输出解码后的多路传输信号。
需要说明的是，本申请实施例的编码模块和解码模块均可以是可编程逻辑器件。
可选地，第一信号调理电路包括：多个外设接口，用于输入多路传输信号；调频模块，连接至多个外设接口，用于对多路传输信号的传输频带进行 调制；以及数据发送模块，数据发送模块的第一端连接至调频模块，数据发送模块的第二端经由导电滑环连接至第二信号调理电路，用于根据多路传输信号的传输频带发送多路传输信号至第二信号调理电路。
可选地，第二信号调理电路包括：数据接收模块，连接至第一信号调理电路中的数据发送模块，用于根据传输频带接收多路传输信号；多个外设接口，用于输出多路传输信号。
第二信号调理电路在接收到多路传输信号之后，通过多个外设接口输出多路传输信号。
本申请实施例通过将多路传输信号调制至不同的传输频带上进行传输的方式，实现多路传输信号在同一物理传输通道上传输。具体地，第一信号调理电路在接收到多路传输信号之后，通过调频模块对多路传输信号的传输频带进行调制，并通过数据发送模块根据多路传输信号的传输频带发送多路传输信号经同一导电滑环传输至第二信号调理电路。
图4是根据本申请第三实施例的信号传输装置的示意图。如图4所示，一些符合要求的信号簇(例如，UART、IIC、SPI、GPIO等占用带宽较低的数字信号)与导电滑环一端的信号调理电路相连接，信号簇经由导电滑环一端的信号调理电路调理后，由导电滑环的一条物理通道传输至导电滑环另外一端，然后从导电滑环另外一端的信号调理电路输出，整个信号簇在信号传输装置两边特性基本保持不变，其中，导电滑环两端的信号调理电路可以相同，也可以不同。本申请实施例通过将多路数据量不大、占用较低导电滑环传输带宽的数字信号，压缩到一个物理通道上进行传输，以达到节约产品物料成本的目的。
需要说明的是，为实现数据的双向传输，本申请实施例的第一信号调理电路和第二信号调理电路可以相同，例如，在通过分时复用的方式实现多路传输信号通过同一个导电滑环的传输通道进行传输时，第一信号调理电路和第二信号调理电路均包括多个外设接口、数据发送模块和数据接收模块和时钟控制模块；在通过对多路传输信号进行编码的方式实现多路传输信号通过同一物理传输通道传输时，第一信号调理电路和第二信号调理电路均包括多个外设接口、数据发送模块和数据接收模块、编码模块和解码模块。
由上述描述可知，本申请实施例通过第一信号调理电路和第二信号调理电路对多路传输信号进行调理，从而使得多路传输信号可以通过同一导电滑环的传输通道进行传输，节省了导电滑环物料成本，解决了相关技术中导电滑环的传输带宽存在较大浪费的问题，进而达到了导电滑环的传输通道复用的效果。
根据本申请实施例，还提供了一种云台，该云台包括上述信号传输装置。图5是根据本申请实施例的云台的示意图。如图5所示，该云台10包括上述实施例中任意一个信号传输装置110，其中，信号传输装置110的结构和工作原理在上述实施例中已进行了详细说明，在此不再赘述。本申请实施例的云台通过信号传输装置可以实现多路传输信号通过同一个导电滑环的物理传输通道进行传输，节省了导电滑环的物料成本，进一步减少了云台的成本，解决了相关技术中导电滑环的传输带宽存在较大浪费的问题，进而达到了导电滑环的传输通道复用的效果。
根据本申请实施例，还提供了一种摄像机，该摄像机包括上述云台。图6是根据本申请实施例的摄像机的示意图。如图6所示，该摄像机1包括上述实施例中的云台10。本申请实施例的摄像机1可以通过上述实施例中的云台10实现多路传输信号通过同一个导电滑环的物理传输通道进行传输，节省了导电滑环的物料成本，进一步减少了摄像机的成本，解决了相关技术中导电滑环的传输带宽存在较大浪费的问题，进而达到了导电滑环的传输通道复用的效果。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
在本申请的上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的技术内容，可通过其它的方式实现。其中，以上所描述的装置实施例仅仅是示意性的，例如所述单元的划分，可以为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，单元或模块的间接耦合或通信连接， 可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
以上所述仅是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (12)

  1. 一种信号传输装置，其特征在于，包括：
    导电滑环；
    第一信号调理电路，连接至所述导电滑环的第一端；以及
    第二信号调理电路，连接至所述导电滑环的第二端，其中，所述第一信号调理电路和所述第二信号调理电路用于对多路传输信号进行调理，调理后的多路传输信号通过同一导电滑环的传输通道进行传输。
  2. 根据权利要求1所述的信号传输装置，其特征在于，所述第一信号调理电路包括：
    多个外设接口，用于输入所述多路传输信号；
    时钟控制模块，用于控制所述多路传输信号的传输时序；以及
    数据发送模块，所述数据发送模块的第一端连接至所述多个外设接口，所述数据发送模块的第二端经由所述导电滑环连接至所述第二信号调理电路，所述数据发送模块用于根据所述传输时序发送所述多路传输信号至所述第二信号调理电路。
  3. 根据权利要求2所述的信号传输装置，其特征在于，所述第二信号调理电路包括：
    数据接收模块，连接至所述数据发送模块，用于接收所述多路传输信号；
    多个外设接口，用于输出所述多路传输信号。
  4. 根据权利要求2所述的信号传输装置，其特征在于，所述第一信号调理电路还包括：逻辑管理模块，用于对所述导电滑环的传输通道进行逻辑划分。
  5. 根据权利要求4所述的信号传输装置，其特征在于，所述逻辑管理模块为可编程逻辑器件。
  6. 根据权利要求1所述的信号传输装置，其特征在于，所述第一信号调理电路包括：
    多个外设接口，用于输入所述多路传输信号；
    编码模块，连接至所述多个外设接口，用于对所述多路传输信号进行编码；以及数据发送模块，连接至所述编码模块，用于发送编码后的多路传输 信号。
  7. 根据权利要求6所述的信号传输装置，其特征在于，所述第二信号调理电路包括：
    数据接收模块，连接至所述第一信号调理电路的数据发送模块；
    解码模块，连接至所述数据接收模块，用于对接收到的多路传输信号进行解码；以及多个外设接口，用于输出解码后的多路传输信号。
  8. 根据权利要求1所述的信号传输装置，其特征在于，所述第一信号调理电路包括：
    多个外设接口，用于输入所述多路传输信号；
    调频模块，连接至所述多个外设接口，用于对所述多路传输信号的传输频带进行调制；以及
    数据发送模块，所述数据发送模块的第一端连接至所述调频模块，所述数据发送模块的第二端经由所述导电滑环连接至所述第二信号调理电路，用于根据所述多路传输信号的传输频带发送所述多路传输信号至所述第二信号调理电路。
  9. 根据权利要求8所述的信号传输装置，其特征在于，所述第二信号调理电路包括：
    数据接收模块，连接至所述数据发送模块，用于根据传输频带接收所述多路传输信号；
    多个外设接口，用于输出所述多路传输信号。
  10. 根据权利要求1所述的信号传输装置，其特征在于，所述第一信号调理电路或所述第二信号调理电路为单片机。
  11. 一种云台，其特征在于，包括权利要求1至10中任一项所述的信号传输装置。
  12. 一种摄像机，其特征在于，包括权利要求11所述的云台。
PCT/CN2016/085441 2015-10-16 2016-06-12 信号传输装置、云台和摄像机 WO2017063375A1 (zh)

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CN205029788U (zh) * 2015-10-16 2016-02-10 杭州海康威视数字技术股份有限公司 信号传输装置、云台和摄像机
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