阅读说明：本技术 一种非接触式传输高速信号的电传输装置及其实现方法 (Electric transmission device for non-contact transmission of high-speed signals and implementation method thereof ) 是由 王义坚 周平涛 吕斌 高飞 李道权 王毅 袁捷 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种非接触式传输高速信号的电传输装置及其实现方法，包括定子和转子，定子设在转子中间，在转子（或定子）上均匀设有N个激光信号发射器，在定子（或转子）上设有一个激光信号接收探测器，转子在高速旋转过程中，通过激光与定子之间保持无线双向通信，即：主要实现多路数字信号在旋转机构中的固定工作台（定子）和旋转工作台（转子）之间的数据传输。本发明采用非接触式传输高速信号，能明显提高导电滑环的高速信号的抗干扰能力、传输效率、传输连续性、传输可靠性和使用寿命，同时避免丢帧、误码现象的产生，本发明解决了高速信号在接触式导电滑环的传输弊端，适用于多信号高速传输、高可靠、长寿命导电滑环的生产。(The invention discloses an electric transmission device for transmitting high-speed signals in a non-contact way and a realization method thereof, wherein the electric transmission device comprises a stator and a rotor, the stator is arranged in the middle of the rotor, N laser signal transmitters are uniformly arranged on the rotor (or the stator), a laser signal receiving detector is arranged on the stator (or the rotor), and the rotor keeps wireless two-way communication with the stator through laser in the high-speed rotation process, namely: the data transmission of multi-channel digital signals between a fixed working table (stator) and a rotary working table (rotor) in the rotary mechanism is mainly realized. The invention adopts non-contact transmission high-speed signals, can obviously improve the anti-interference capability, transmission efficiency, transmission continuity, transmission reliability and service life of the high-speed signals of the conductive slip ring, and simultaneously avoids the phenomena of frame loss and error code.)

1. An electric transmission device for transmitting high-speed signals in a non-contact manner, comprising a stator and a rotor, characterized in that: the circular stator is arranged in the middle of the annular rotor, the inner side wall of the rotor is uniformly provided with a plurality of laser signal transmitters, the outer side wall of the stator is provided with a laser signal receiving detector capable of receiving laser signals, and the laser signal transmitters and the laser signal receiving detector are connected with the control circuit through wires respectively.

2. A method for realizing non-contact transmission of high-speed signals is characterized by comprising the following steps: the method comprises the following specific steps:

A. the rotor transmits to the stator: the method is completed by N laser signal transmitters on the inner side wall of a rotor and 1 laser signal receiving detector on the outer side wall of a stator, wherein the laser signal transmitters convert electric signals of a rotor end into optical signals, and the N laser signal transmitters synchronously transmit the laser signal receiving detectors of the stator end; through the light path design, signal interruption caused by uncovered optical signals in the rotation process is avoided; through circuit design, transmission errors at the intersection and switching positions of two adjacent beams of light are avoided;

b. Multiplexing the multi-path service signals: multiplexing of multi-path service data to one path of light is realized by the following two technologies:

(1) and electrical multiplexing: multiplexing multiple paths of digital signals into a path of digital signal by adopting an FPGA (field programmable gate array), and converting the digital signal into an optical signal for transmission; at a receiving end, converting a received optical signal into a path of digital signal, tapping into a plurality of paths of digital signals through an FPGA (field programmable gate array), wherein the multiple tapping mode is bit time-interleaved multiple tapping;

(2) and optical multiplexing: multiplexing multiple optical signals into one optical channel by adopting an optical wavelength division multiplexing technology: converting each path of service data into optical signals with different wavelengths through an electro-optical conversion circuit respectively, and combining the optical signals into one path of light through a wavelength division multiplexer; at the receiving end, the wavelength of different wavelengths is decomposed by a wavelength division multiplexer, and then each path of optical signal is recovered into an electric signal by a photoelectric conversion circuit.

3. An electric transmission device for transmitting high-speed signals in a non-contact manner, comprising a stator and a rotor, characterized in that: the circular stator is arranged in the middle of the annular rotor, the outer side wall of the stator is uniformly provided with a plurality of laser signal transmitters, the inner side wall of the rotor is provided with a laser signal receiving detector capable of receiving laser signals, and the laser signal transmitters and the laser signal receiving detector are connected with the control circuit through wires respectively.

4. A method for realizing non-contact transmission of high-speed signals is characterized by comprising the following steps: the method comprises the following specific steps:

A. the stator transmits to the rotor: the method is completed by N laser signal transmitters on the outer side wall of the stator and 1 laser signal receiving detector on the inner side wall of the rotor, the laser signal transmitters convert electric signals of a stator end into optical signals, and the optical signals are synchronously transmitted to the laser signal receiving detector of a rotor end from the N laser signal transmitters; through the light path design, signal interruption caused by uncovered optical signals in the rotation process is avoided; through circuit design, transmission errors at the intersection and switching positions of two adjacent beams of light are avoided;

b. Multiplexing the multi-path service signals: multiplexing of multi-path service data to one path of light is realized by the following two technologies:

(1) and electrical multiplexing: multiplexing multiple paths of digital signals into a path of digital signal by adopting an FPGA (field programmable gate array), and converting the digital signal into an optical signal for transmission; at a receiving end, converting a received optical signal into a path of digital signal, tapping into a plurality of paths of digital signals through an FPGA (field programmable gate array), wherein the multiple tapping mode is bit time-interleaved multiple tapping;

(2) and optical multiplexing: multiplexing multiple optical signals into one optical channel by adopting an optical wavelength division multiplexing technology: converting each path of service data into optical signals with different wavelengths through an electro-optical conversion circuit respectively, and combining the optical signals into one path of light through a wavelength division multiplexer; at the receiving end, the wavelength of different wavelengths is decomposed by a wavelength division multiplexer, and then each path of optical signal is recovered into an electric signal by a photoelectric conversion circuit.

Technical Field

The invention relates to a conductive slip ring, in particular to an electric transmission device for transmitting high-speed signals in a non-contact manner and an implementation method thereof.

Background

The electric slip ring is an electric transmission device for transmitting electric power and electric signals, and the working principle of the electric slip ring is that the electric power and the electric signals between a static part and a rotating part of the electric slip ring are accurately transmitted through the relative rotation of the static part and the rotating part, and the electric slip ring is commonly used in equipment such as a rotary table, a gyro platform, artillery control, navigation guidance, radar antennas, theodolite and the like.

At present, the conventional conductive slip ring is in contact type signal transmission and is characterized in that: (1) the service life is limited by the friction life of the friction pair; (2) the signal transmission is that one path transmits one signal, and one path cannot transmit various high-speed signals, so that the transmission efficiency is low; (3) because the high-speed signal has high requirement on impedance matching, in contact type high-speed signal transmission, the continuity of signal transmission is greatly influenced because the impedance is constantly changed.

In order to improve the efficiency and reliability of high-speed signal transmission, it is critical to change the transmission structure of high-speed signals.

Disclosure of Invention

The first object of the present invention is to provide an electric transmission device for transmitting high-speed signals in a non-contact manner, which can improve the transmission efficiency, anti-interference capability, transmission reliability and the service life of a conductive slip ring, and is free from interference problems and abrasion phenomena.

The second purpose of the invention is to provide a method for realizing non-contact transmission of high-speed signals.

The first object of the present invention is achieved by:

an electric transmission device for transmitting high-speed signals in a non-contact manner, which comprises a stator and a rotor, and is characterized in that: the circular stator is arranged in the middle of the annular rotor, the inner side wall of the rotor is uniformly provided with a plurality of laser signal transmitters, the outer side wall of the stator is provided with a laser signal receiving detector capable of receiving laser signals, and the laser signal transmitters and the laser signal receiving detector are connected with the control circuit through wires respectively.

Or, an electric transmission device for transmitting high-speed signal in a non-contact way, comprising a stator and a rotor, characterized in that: the circular stator is arranged in the middle of the annular rotor, the outer side wall of the stator is uniformly provided with a plurality of laser signal transmitters, the inner side wall of the rotor is provided with a laser signal receiving detector capable of receiving laser signals, and the laser signal transmitters and the laser signal receiving detector are connected with the control circuit through wires respectively.

The second object of the invention is achieved by:

a method for realizing non-contact transmission of high-speed signals is characterized in that: the method comprises the following specific steps:

A. the rotor transmits to the stator: the method is completed by N laser signal transmitters on the inner side wall of a rotor and 1 laser signal receiving detector on the outer side wall of a stator, wherein the laser signal transmitters convert electric signals of a rotor end into optical signals, and the N laser signal transmitters synchronously transmit the laser signal receiving detectors of the stator end; through the light path design, signal interruption caused by uncovered optical signals in the rotation process is avoided; through circuit design, transmission errors at the intersection and switching positions of two adjacent beams of light are avoided;

b. Multiplexing the multi-path service signals: multiplexing of multi-path service data to one path of light is realized by the following two technologies:

(1) and electrical multiplexing: multiplexing multiple paths of digital signals into a path of digital signal by adopting an FPGA (field programmable gate array), and converting the digital signal into an optical signal for transmission; at a receiving end, converting a received optical signal into a path of digital signal, tapping into a plurality of paths of digital signals through an FPGA (field programmable gate array), wherein the multiple tapping mode is bit time-interleaved multiple tapping;

(2) and optical multiplexing: multiplexing multiple optical signals into one optical channel by adopting an optical wavelength division multiplexing technology: converting each path of service data into optical signals with different wavelengths through an electro-optical conversion circuit respectively, and combining the optical signals into one path of light through a wavelength division multiplexer; at the receiving end, the wavelength of different wavelengths is decomposed by a wavelength division multiplexer, and then each path of optical signal is recovered into an electric signal by a photoelectric conversion circuit.

Or, a method for realizing non-contact transmission high-speed signal, characterized in that: the method comprises the following specific steps:

A. the stator transmits to the rotor: the method is completed by N laser signal transmitters on the outer side wall of the stator and 1 laser signal receiving detector on the inner side wall of the rotor, the laser signal transmitters convert electric signals of a stator end into optical signals, and the optical signals are synchronously transmitted to the laser signal receiving detector of a rotor end from the N laser signal transmitters; through the light path design, signal interruption caused by uncovered optical signals in the rotation process is avoided; through circuit design, transmission errors at the intersection and switching positions of two adjacent beams of light are avoided;

b. Multiplexing the multi-path service signals: multiplexing of multi-path service data to one path of light is realized by the following two technologies:

(1) and electrical multiplexing: multiplexing multiple paths of digital signals into a path of digital signal by adopting an FPGA (field programmable gate array), and converting the digital signal into an optical signal for transmission; at a receiving end, converting a received optical signal into a path of digital signal, tapping into a plurality of paths of digital signals through an FPGA (field programmable gate array), wherein the multiple tapping mode is bit time-interleaved multiple tapping;

(2) and optical multiplexing: multiplexing multiple optical signals into one optical channel by adopting an optical wavelength division multiplexing technology: converting each path of service data into optical signals with different wavelengths through an electro-optical conversion circuit respectively, and combining the optical signals into one path of light through a wavelength division multiplexer; at the receiving end, the wavelength of different wavelengths is decomposed by a wavelength division multiplexer, and then each path of optical signal is recovered into an electric signal by a photoelectric conversion circuit.

The working principle is as follows:

A. in the process of high-speed rotation of the rotor, the rotor is in wireless two-way communication with the stator through laser, and reliable communication is realized through the design of a conventional optical system and a communication processing unit;

B) the laser signal receiving detector is covered by the laser signals of the rotor and the stator in the relative rotation process by adopting a multi-path optical signal simultaneous transmitting technology, and the signal synchronization and consistency among the multi-path transmitted laser signals are ensured by adopting an electric signal processing technology.

The invention comprises a stator and a rotor, wherein the stator is arranged in the middle of the rotor, N laser signal transmitters are uniformly arranged on the rotor (or the stator), the number of the N laser signal transmitters needs to be calculated according to the transmission data quantity and the detailed size and the spacing of the rotor/stator, a laser signal receiving detector capable of receiving laser signals is arranged on the stator (or the rotor), and the rotor keeps wireless two-way communication with the stator through laser in the high-speed rotation process, namely: the data transmission of multi-channel digital signals between a fixed working table (stator) and a rotary working table (rotor) in the rotary mechanism is mainly realized. Compared with the optical fiber slip ring, the low-speed, short-distance and closed non-contact signal transmission system has the following advantages:

1. the service life of the conductive slip ring is prolonged, and the phenomenon of abrasion is avoided as the conductive slip ring is changed from a contact type to a non-contact type;

2. the synchronous transmission of various high-speed signals can be realized, the transmission efficiency and the transmission continuity of the high-speed signals are greatly improved, and the phenomena of frame loss and error codes are avoided;

3. the transmission reliability and the anti-interference capability of high-speed signals can be effectively improved, and the problem of no interference exists;

4. the conductive slip ring can be effectively subjected to miniaturization design;

5. the transmission reliability and the service life of the conductive slip ring can be obviously improved;

6. the electrical parameters of the conductive slip ring are easier to ensure;

7. the cost performance is high, the installation requirement is low, and the environmental suitability is strong.

The invention adopts non-contact type to transmit high-speed signals, solves the problem of impedance mismatching of the high-speed signals transmitted by the conventional contact type conductive slip ring and other transmission defects of the high-speed signals, and is suitable for the production of the conductive slip ring with multi-signal high-speed transmission, large capacity, high reliability and long service life.

Drawings

FIG. 1 is a schematic structural view of a stator and a rotor in embodiment 1;

fig. 2 is a schematic structural view of a stator and a rotor in embodiment 2.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following examples and drawings.