WO2020096074A1

WO2020096074A1 - Method and system for controlling switching between multiplexed wires by means of disconnection detection, multiplexing of signal wires

Info

Publication number: WO2020096074A1
Application number: PCT/KR2018/013355
Authority: WO
Inventors: 이정우; 이종득; 이효준; 최영호; 김효곤
Original assignee: 한국로봇융합연구원
Priority date: 2018-11-05
Filing date: 2018-11-06
Publication date: 2020-05-14
Also published as: KR102184669B1; KR20200051871A

Abstract

The present invention relates to a device which can multiplex, into a plurality of wires, analog and digital signal input/output lines used for controlling an electronic device or measuring by a sensor in a typical electronic control device such as a robot and enables wire switching by means of disconnection detection, and a method for controlling same. A method for controlling switching between multiplexed wires according to an aspect of the present invention can comprise: a first step in which a source signal in the form of voltage or current is input to a first device; a second step in which the first device converts the source signal into the form of current by means of a voltage-to-current converter if the source signal is in the form of voltage; a third step in which the first device converts the source signal which has been converted into the form of current or a source signal in the form of current into a signal in a preset current range by means of a second current-to-current converter; and a fourth step in which the first device transmits the source signal which has been converted into the preset current range to a second device.

Description

Control method and system for switching between multiple wires by multiplexing signal wires and detecting disconnection

The present invention relates to a device capable of multiplexing input / output lines of analog and digital signals used for measurement of sensors or controlling electronic devices in a general electronic control device including a robot into a plurality of wires, and to switch wires through disconnection detection, and a control method thereof will be.

Signal wires that are physically wired may be disconnected depending on the environment in which they are installed or the operation of the system including the device.

Therefore, in order for the operation of the system to be stable and continuous, a device or device is included.

Here, the digital signal line can be multiplexed by simply overlapping the wiring, but when the multiple strands of the analog signal line are bundled, the signal strength is changed by current and voltage distribution and abnormal information is transmitted.

Due to these problems, recently, there is an increasing need for hardware for multiplexing a plurality of wires without loss of both digital signals and analog signals, and a control method for automatically detecting a disconnection state and switching wires.

The present invention multiplexes the input and output lines of analog and digital signals used for measurement of sensors or control electronic devices in a general electronic control device including a robot, and a device and a control method and system capable of switching wiring through disconnection detection I would like to suggest.

Specifically, in the present invention, in order to transmit a signal through a long-distance wiring, an apparatus for converting an original signal form into an analog current form and a receiver converting it into an original signal form and a control method thereof are proposed.

In addition, in the present invention, in a case in which a wire for transmitting a signal is disconnected, a circuit for controlling a multiplexing and controlling the transmission / reception unit for a single signal by connecting to multiple wirings is configured.

In addition, in the present invention, a circuit for detecting a disconnection current signal is simultaneously transmitted to all the multiplexed wirings, and a circuit for detecting the disconnection is checked at the same time. I want to reduce the amount of time.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly apparent to those skilled in the art from the following description. Will be understandable.

In one aspect of the present invention for achieving the above technical problem, a control method for switching between multiple wires, comprising: a first step of inputting an original signal in the form of voltage or current to a first device; A second step in which the first device converts the original signal into a current form by using a voltage-to-current converter when the original signal is in a voltage form; A third step of converting the original signal converted into the current form or the original signal in the current form into a signal having a preset current range by using the second current-to-current converter. ; And a fourth step in which the first device transmits the original signal converted to a preset current range to a second device.

In addition, the preset current range may be 4-20 mA.

In addition, after the fourth step, a fifth step of restoring the current range of the original signal based on the preset range by using a second current-current converter in the second device; And a sixth step of re-converting to a form of an original signal input to the first device by selectively using a current-to-voltage converter in the second device.

In addition, between the third step and the fourth step, the step of inputting the original signal converted to the preset current range to a plurality of relays; And through control, only the first relay among the plurality of relays is connected, and the rest of the relays are opened. In the fourth step, through the first relay, the preset current range The original signal converted to can be transmitted to the second device.

In addition, the selection of the first relay may be performed by a demultiplexer method or a direct control method using an embedded controller.

Also, the plurality of relays may be configured as at least one of a mechanical relay element and a solid state relay (SSR) element.

Further, each of the plurality of relays is disposed adjacent to each of the plurality of disconnection detection relays, and is electrically separated, and when the first relay is selected, the first relay among the plurality of disconnection detection relays The adjacent relay for detecting the first disconnection may be open to the original signal converted to the preset current range.

In addition, when the first relay is selected, among the plurality of disconnection detection relays, the remaining disconnection detection relays disposed adjacent to the remaining relays are connected to the original signal converted into the preset current range, and the The original signal converted to the preset current range transmitted through the remaining disconnection detection relay may be transmitted to the input of the control controller, not the second device.

Meanwhile, in a system for switching between multiple wires, which is another aspect of the present invention for achieving the above technical problem, when the original signal in the form of voltage or current is input to the first device, and the original signal is in the form of voltage, the The first device converts the original signal into a current form using a voltage-to-current converter, and converts the original signal converted into the current form or a current signal into a current form into a second current. -Using a current converter (Current-to-Current Converter), it is converted into a signal in a preset current range, and the original signal converted into the preset current range can be transmitted to a second device.

The present invention multiplexes the input and output lines of analog and digital signals used for measurement of sensors or control electronic devices in a general electronic control device including a robot, and a device and a control method and system capable of switching wiring through disconnection detection Can be provided to the user.

Specifically, in the present invention, in order to transmit a signal through a long-distance wiring, a transmitting unit may provide an apparatus for converting an original signal into an analog current, and a receiving unit for converting the original signal into an original signal.

In addition, in the present invention, for a case in which the wiring for transmitting a signal is disconnected, a circuit for multiplexing and controlling the transmission / reception unit for one signal by connecting to multiple wirings can be configured.

In addition, in the present invention, a circuit for detecting a disconnection current signal is simultaneously transmitted to all the multiplexed wirings, and a circuit for detecting the disconnection is checked at the same time. You can reduce the time it takes.

In the end, the system including the electronic control is important for continuous operability, and the signal wiring can be multiplexed through the present invention, so that signals can be continuously transmitted even when the wiring is damaged, such as disconnection.

In addition, since the present invention converts the form of a transmission signal into a current, it is possible to cope with long distance wiring.

In addition, the present invention is capable of quickly responding to the restoration of the wiring because disconnection detection is performed for all the wirings at once without selecting and inspecting various wirings.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. Will be able to.

1 shows an example of a block diagram of a device applied to the present invention.

2 is a diagram for explaining a process of transmitting a signal when the original electrical signal is in the form of a voltage in relation to the present invention.

3 is a diagram for explaining a process of transmitting a signal when the original electricity is in the form of a current in relation to the present invention.

4 is a flowchart illustrating a method of overcoming end-to-end transmission by overcoming attenuation of a signal when the original signal to be transmitted is in the form of a DC voltage in relation to the present invention.

5 illustrates an example of a circuit for selecting a single wire and inspecting disconnection when there are multiple wires for various signals in connection with the present invention.

6 is a flowchart illustrating a method of selecting one wiring and performing a disconnection inspection when there are multiple wirings for various signals in connection with the present invention.

Apparatus applied to the present invention

Prior to the detailed description of the present invention, an example of a block diagram of a device applied to the present invention will be described with reference to FIG. 1.

Referring to FIG. 1, the device 100 includes a wireless communication unit 110, an audio / video (A / V) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, and a memory ( 160), an interface unit 170, a control unit 180, and a power supply unit 190.

However, since the components illustrated in FIG. 1 are not essential, an apparatus having more or fewer components may be implemented.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more modules that enable wireless communication between a device and a wireless communication system or between a device and a network in which the device is located.

For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short-range communication module 114, and a location information module 115. .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits broadcast signals and / or broadcast-related information or a server that receives previously generated broadcast signals and / or broadcast-related information and transmits them to a device. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, as well as a TV broadcast signal or a radio broadcast signal combined with a data broadcast signal.

The broadcast-related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms. For example, it may exist in the form of an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or an Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast reception module 111 includes, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast (DVB-H). Digital broadcasting signals can be received using digital broadcasting systems such as -Handheld) and ISDB-T (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be configured to be suitable for other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast-related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives wireless signals to and from at least one of a base station, an external device, and a server on a mobile communication network.

It may include various types of data according to the transmission and reception of text / multimedia messages.

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built in or external to a device. Wireless Internet technology (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) may be used.

The short-range communication module 114 refers to a module for short-range communication. Bluetooth (Bluetooth), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra-Wideband (UWB), ZigBee, Wireless Fidelity (Wi-Fi), etc. This can be used.

The location information module 115 is a module for obtaining a location of a device, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 1, the A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, which may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving pictures obtained by an image sensor in a shooting mode. The processed image frame may be displayed on the display unit 151.

The image frames processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110.

Two or more cameras 121 may be provided according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a recording mode, a voice recognition mode, etc., and processes it as electrical voice data. The processed voice data may be converted and output in a form that can be transmitted to the mobile communication base station through the mobile communication module 112. Various noise reduction algorithms for removing noise generated in the process of receiving an external sound signal may be implemented in the microphone 122.

The user input unit 130 generates input data for a user to control the operation of the device. The user input unit 130 may be configured with a key pad dome switch, a touch pad (static pressure / blackout), a jog wheel, a jog switch, or the like.

The sensing unit 140 detects the current state of the device, such as an open / closed state of the device, a position of the device, presence or absence of user contact, orientation of the device, acceleration / deceleration of the device, and generates a sensing signal for controlling the operation of the device.

The sensing unit 140 may sense whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled with external devices, or the like.

Meanwhile, the sensing unit 140 may include a proximity sensor 141.

In addition, the sensing unit 140 may further include an ultrasonic sensor 142.

The ultrasonic sensor 142 refers to a sensor using characteristics of ultrasonic waves, which are sounds of a high frequency (about 20 KHz or more) that are inaudible to the human ear.

Ultrasonic waves can be used for air, liquids, and solids. Because it has a high frequency and a short wavelength, it has a feature that can measure high resolution.

The output unit 150 is for generating output related to vision, hearing, or tactile sense, which includes a display unit 151, an audio output module 152, an alarm unit 153, a haptic module 154, and a projector module ( 155).

The display unit 151 displays (outputs) information processed by the device.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible) display) and a 3D display.

Some of these displays may be of a transparent type or a light transmissive type so that the outside can be seen through them. This may be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see an object located behind the device body through an area occupied by the display unit 151 of the device body.

Two or more display units 151 may be present depending on the implementation form of the device. For example, a plurality of display units may be spaced apart or integrally disposed on one surface of the device, or may be disposed on different surfaces.

When the display unit 151 and a sensor that senses a touch operation (hereinafter referred to as a “touch sensor”) form a mutual layer structure (hereinafter, referred to as a “touch screen”), the display unit 151 may be used in addition to an output device. It can also be used as an input device. The touch sensor may have a form of, for example, a touch film, a touch sheet, or a touch pad.

The touch sensor may be configured to convert changes in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the touched position and area, but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits corresponding data to the controller 180. Accordingly, the control unit 180 can know which area of the display unit 151 has been touched, and the like.

The proximity sensor 141 may be disposed in an inner region of the device wrapped by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without mechanical contact using electromagnetic force or infrared rays. Proximity sensors have a longer lifespan and higher utilization than contact sensors.

Examples of the proximity sensor include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive type proximity sensor, a magnetic type proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, it is configured to detect the proximity of the pointer due to a change in electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of description, an act of causing the pointer to be recognized as being located on the touch screen without being touched by the pointer on the touch screen is referred to as a “proximity touch”, and the touch The act of actually touching the pointer on the screen is referred to as "contact touch". The location on the touch screen that is a proximity touch with a pointer refers to a location where the pointer corresponds vertically to the touch screen when the pointer is touched close.

The proximity sensor detects a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen.

The audio output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a recording mode, a voice recognition mode, a broadcast reception mode, or the like. The sound output module 152 may also output sound signals related to functions performed by the device. The sound output module 152 may include a receiver, a speaker, and a buzzer.

The alarm unit 153 outputs a signal for notifying the occurrence of an event in the device.

The alarm unit 153 may output a signal for notifying the occurrence of an event by vibrating in a form other than a video signal or an audio signal, for example, vibration.

The video signal or audio signal may also be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the tactile effect generated by the haptic module 154 is vibration. The intensity and pattern of vibration generated by the haptic module 154 can be controlled.

For example, different vibrations may be synthesized and output or sequentially output.

In addition to vibration, the haptic module 154 is used for stimulation such as pin arrangement that vertically moves with respect to the contact skin surface, jet or suction power of air through a jet or intake, grazing on the skin surface, contact with an electrode, and electrostatic force. Various tactile effects can be generated, such as an effect and an effect of reproducing a feeling of cold and warm using an element capable of absorbing heat or generating heat.

The haptic module 154 may not only deliver the tactile effect through direct contact, but may also be implemented so that the user can feel the tactile effect through muscle sensations such as fingers or arms. Two or more haptic modules 154 may be provided according to a configuration aspect of the device.

The projector module 155 is a component for performing an image project function using a device, and the same or at least a part of an image displayed on the display unit 151 according to a control signal of the controller 180 Other images can be displayed on an external screen or wall.

Specifically, the projector module 155 generates a light source (not shown) that generates light (for example, laser light) for outputting an image to the outside, and generates an image to be output to the outside using light generated by the light source. It may include an image generating means (not shown), and a lens (not shown) for expanding and outputting the image at a certain focal length to the outside. In addition, the projector module 155 may include a device (not shown) that can adjust the image projection direction by mechanically moving the lens or the entire module.

The projector module 155 may be divided into a cathode ray tube (CRT) module, a liquid crystal display (LCD) module, and a digital light processing (DLP) module depending on the type of device of the display means. In particular, the DLP module may be advantageous for miniaturization of the projector module 151 by expanding and projecting an image generated by reflecting light generated from a light source to a DMD (Digital Micromirror Device) chip.

Preferably, the projector module 155 may be provided in the longitudinal direction on the side, front, or back of the device. Of course, it is natural that the projector module 155 may be provided at any position of the device if necessary.

The memory 160 may store programs for processing and control of the controller 180 and temporarily store input / output data (eg, messages, audio, still images, videos, etc.). You can also do The frequency of use for each of the data may also be stored in the memory unit 160. In addition, the memory unit 160 may store data related to various patterns of vibration and sound output when a touch is input on the touch screen.

The memory 160 is a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory, etc.), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), magnetic memory, magnetic It may include a storage medium of at least one type of disk, optical disk. The device may operate in connection with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a passage with all external devices connected to the device. The interface unit 170 receives data from an external device, receives power, transfers it to each component inside the device, or allows data inside the device to be transmitted to the external device. For example, wired / wireless headset port, external charger port, wired / wireless data port, memory card port, port for connecting devices equipped with an identification module, audio input / output (I / O) port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip that stores various information for authenticating a device's usage rights, and includes a user identification module (UIM), a subscriber identification module (SIM), and a universal subscriber identity module (Universal Subscriber Identity Module). , USIM). The device provided with the identification module (hereinafter referred to as 'identification device') may be manufactured in a smart card format. Therefore, the identification device can be connected to the device through a port.

The interface unit may be a passage through which power from the cradle is supplied to the device when the device is connected to an external cradle, or a passage through which various command signals input from the cradle by a user are transmitted to the mobile device. have. Various command signals or power inputted from the cradle may be operated as signals for recognizing that the mobile device is correctly mounted on the cradle.

The controller 180 controls the overall operation of the device.

The controller 180 may also include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the controller 180, or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process capable of recognizing handwriting input or picture drawing input performed on the touch screen as text and images, respectively.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power required for the operation of each component.

The various embodiments described herein can be implemented in a computer- or similar device-readable recording medium using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to a software implementation, embodiments such as procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code can be implemented in a software application written in an appropriate programming language. The software code may be stored in the memory 160 and executed by the controller 180.

Hereinafter, a deep learning learning method and system for dividing time series data for each frequency component and processing multiple learning models in parallel based on the system described with reference to FIG. 2 will be described in detail.

Prior art and problems of the prior art

Device or device is included In order to ensure stable and continuous operation of the system, it is necessary to prepare a plurality of wires to prepare for disconnection. Digital signal lines can be multiplexed by simply overlapping the wiring, but analog signal lines are multiple strands. When the line of is tied, the signal strength is changed by the current and voltage distribution, and abnormal information is transmitted.

The electronic control device is connected to the sensor and the driving device by an electric wire.

How to detect the state of an electric wire (whether disconnected, changes in electrical resistance, etc.) when multiple strands of wires for multiple sensors and drive units are connected or when multiple strands of wires are connected for a single sensor and drive unit Several of these are being presented.

When the entire system including the electronic control device needs to be continuously operated, there is a method of multiplexing / demultiplexing the wiring into multiple strands so that it can be switched and used even when problems such as disconnection of some wiring occur.

(Prior Art 1) In the prior invention, in Application No. 1020110127807 (a defect detection method of a wiring and demultiplexing unit, a panel including a defect detection device and a defect detection device), a display panel is provided with a demultiplexing device for a plurality of wirings. Select each line to check if the DC voltage is supplied and repeat it for all wiring.

In the prior art 1, it is checked whether a transmitter and a receiver are connected by turning on / off a switch at an intersection for a form (matrix) in which the wires of the transmitter and the wires of the receiver are cross-bonded. The wiring of the transmitting unit and the receiving unit therefor becomes a single wiring.

(Prior Art 2) Application No. 1020130079281 ('Inspection apparatus and wiring and ledger inspection method using the same) has a plurality of demultiplexing switches connected to each of a plurality of data lines for wiring inspection, and for detecting wiring defects. It includes a wiring inspection device composed of a control switch that supplies a wiring inspection signal, and checks whether the wiring is defective by applying a voltage through the operation of the switch.

(Prior Art 3) Registration No. 1004170950000 (wiring inspection device and wiring inspection method of a substrate) applies a magnetic field to the wiring in the electromagnetic board to detect the current flowing in the wiring and inspects the wiring state. It should be a single wire forming a closed loop, and a method for inspecting a short wire is proposed, not multiplexing of the wire itself.

(Prior Art 4) Application No. 1019940033017 ('wiring inspection circuit)' is a circuit that performs multi-wiring inspection with a single power source using a ring counter, and checks by checking the high / low digital signal by the ring counter output. do.

The invention disclosed in the prior art 4 replaces the existing demultiplexing / multiplexing device with a ring counter, automatically selects the wiring by a clock signal of a certain period, and the output terminal is configured to show the wiring state with a light-emitting diode (LED). This is to check for disconnection of simple wiring, not for transmission.

As a core technology applied to the above-mentioned prior art, a method of multiplexing / demultiplexer selecting a wiring for a plurality of wirings connecting a signal transmission unit and a reception unit, and a switch connecting the transmission unit wiring and the reception unit wiring There is an on-off method.

Here, the multiplexing / demultiplexing method is used to select multiple wires for multiple signals.

In addition, the switch on-off method is used to check the disconnection of a wire by measuring whether a signal is transmitted while connecting and disconnecting the wiring of the transmitter and the receiver.

In the prior art, using the above core technology, the original signal to be transmitted or the signal for inspection is used as it is, and this signal mainly applies the form of a digital square wave (low-high level signal) of DC voltage.

In addition, 2) the transmitting and receiving unit for one signal is connected by a single wire, and there may be a switch in the middle, and when there are multiple wiring for multiple signals, a single wire can be selected to perform disconnection inspection. Have a circuit.

However, the following three problems exist in the above-described conventional technique.

(Problem 1) When a signal is to be transmitted through a long-distance wiring, if the original signal to be transmitted is in the form of a DC voltage, signal attenuation occurs and it is difficult to transfer from end to end.

(Problem 2) One signal is transmitted through one wire, but it is not multiplexed in case this wire is disconnected.

(Problem 3) In multiple wires, multiple wires / demultiplexers are used to check each wire, and if the current wire is disconnected and needs to be switched to another wire, select each wire after the wire is disconnected. Since it inspects and finds the normal wiring, there is a problem of time delay during which no signal is transmitted during this process.

Therefore, in order to solve the above problems, the present invention multiplexes input / output lines of analog and digital signals used for measurement of sensors or control electronic devices in a general electronic control device including a robot, and can switch wiring through disconnection detection. We would like to propose a device and its control method and system.

When the original signal is in the form of DC voltage, the method of signal transmission between ends

As a solution to the problem 1, when the original signal is in the form of a direct current voltage, a method for transmitting signals between end points proposed by the present invention will be described.

2 is a diagram illustrating a process of transmitting a signal when the original electrical signal is in the form of a voltage in connection with the present invention. It is a diagram explaining the process.

In addition, FIG. 4 is a flowchart illustrating a method of overcoming end-to-end transmission by overcoming the attenuation of a signal when the original signal to be transmitted is in the form of a DC voltage in relation to the present invention.

The method according to FIG. 4 will be described based on FIGS. 2 and 3.

First, referring to FIGS. 2 and 3, the communication unit according to the present invention includes a transmission unit for transmitting information and a reception unit for receiving information, and a plurality of devices 100 according to the present invention may exist.

It is assumed that a plurality of devices 100 exist, and it is assumed that the first device transmits information to the second device.

Referring to FIG. 4, first, a step (S11) in which the original signal in the form of a voltage is input to the transmitter of the first device is performed.

Subsequently, a step (S12) of converting the original signal into a current form by using a “Voltage-to-Current Converter” in the transmitter is performed.

That is, in the present invention, in order to transmit a signal through a long-distance wiring, a process of converting the form of the original signal into an analog current form in the transmitter and converting it into the form of the original signal is applied in the receiver.

After step S12, the step of re-converting to a preset current range (electrical transmission standard 4 to 20 milliamperes) based on the 'Current-to-Current Converter' 210 is performed by the transmitter (S13). .

In step S13, the range of the current to be converted may be a range of '4 to 20 milliamperes' (4 to 20 mA) used as an analog electrical transmission standard in industrial measurement and communication.

As shown in FIG. 4, if the converted signal or the original signal is in the form of a current, it may be converted to a current range of 4 to 20 milliamperes by a 'Current-to-Current Converter' (210). .

In addition, the converters of FIGS. 3 and 4 can be combined into one and applied to the system according to the present invention.

Subsequently, a step (S14) of transmitting the original signal in the form of an analog current to the receiver is performed by the transmitter of the first device.

Thereafter, a preset current range (electrical transmission standard 4 to 20 milliamperes) is applied based on the 'Current-to-Current Converter' at the receiver of the second device to form the current of the original signal. By performing the step (S16) of re-converting to the original signal in the form of a voltage using the step of converting (S15) and the 'Current-to-Voltage Converter' (230), information is completely received. Can be.

Multiplexing in case the wiring is disconnected

As a solution to the problem 2, a description will be given of a multiplexing device in case the wiring is disconnected.

In the present invention, when a wire for transmitting a signal is disconnected, a circuit for multiplexing and controlling the transmission / reception unit for a single signal by connecting to multiple wirings is configured.

If the signal in the form of current is directly connected and connected with multiple wires, current distribution occurs according to the impedance of the wire, and the receiver cannot receive a normal signal.

Therefore, a single wiring for transmission of an actual signal must be selected from among various wirings.

To this end, in the present invention, a circuit using a mechanical relay or a semiconductor relay (SSR) is constructed.

Referring to FIG. 5, there is a relay (relay control signal 250 applied) at the input of each wire, and one original signal is connected to the inputs of relays of various wires.

The relays of the various wires shown in FIG. 5 are connected only one at a time through control, and the rest of the relays are disconnected.

Since the relay is in physical or electrical contact, the phenomenon in which the original signal 230 is distributed over several wires does not occur.

Further, in order to select only one of the multiple relays, a demultiplexer method that is a background technology may be used, or it may be directly controlled by an embedded controller (180).

Various There are multiple wires to the signal When to perform a disconnection inspection by selecting one wiring

As a solution to the problem 3, a description will be given of a method of selecting one wiring and performing a disconnection inspection when there are multiple wirings for multiple signals.

As the circuit for solving the problem 3, the circuit described in FIG. 5 may be applied.

In the method of selecting and inspecting one wire at a time for disconnection inspection for multiple wires, a time delay occurs while inspecting the disconnection status of all multiplexed wires (time and current sensor required for wiring selection are current Time is included).

In order to shorten or eliminate this time delay, in the present invention, a circuit is configured to simultaneously transmit and detect a disconnection detection current signal to all multiplexed wires.

It detects disconnection detection for all wires at once, which reduces the time required to select and search existing wires sequentially.

To the wiring selection relay circuit for signal transmission constructed in the circuit shown in FIG. 5, a relay and a current measurement sensor for controlling current signal transmission for disconnection detection are added.

The range of the current signal 240 for disconnection detection may select any value within 4 to 20 milliamperes.

The relay for transmitting the original signal 230 uses the A contact type (NO: Normal Open), and the relay for the current signal transmission for disconnection detection uses the B contact type (NC: Normal Close).

In addition, the outputs of the two relays are physically connected, and at the same time, control is made so that the two relays are not in contact and connected.

In addition, when one of the multiplexed wires is selected, the relay for transmitting the original signal is closed (contacted), and the relay for transmitting the current signal for disconnection detection is opened to transmit only the original signal.

In the other wires, the relay for transmitting the original signal is opened and the relay for detecting the disconnection is closed, so that the current for detecting the disconnection flows simultaneously.

Therefore, current flows through all the wires, and the current measurement sensor can measure the current state of all the wires in one moment.

The outputs of the current measurement sensors mounted on all wires are simultaneously received and processed as inputs of the built-in control controller.

In addition, the receiving unit receives the original signal through the opposite process.

The algorithm of the wiring selection control through disconnection detection in the multiplexed wiring will be described with reference to FIG. 6.

FIG. 6 illustrates a method of selecting a single wire and performing a disconnection test when there are multiple wires for various signals.

Referring to FIG. 6, first, a step (S21) of opening a relay for transmitting the original signal 230 of all wires and closing (contacting) the relay for transmitting the signal 240 for detecting a disconnection is performed.

Thereafter, a step (S22) in which a current for detecting a disconnection flows through all the wirings proceeds.

In addition, the built-in controller 180 reads the current sensors mounted on all the wires, continuously monitors whether the wires are disconnected, and executes a step S23 in which an iterative loop is executed to record a list of normal wires.

Thereafter, the built-in controller 180 sequentially or randomly selects one wire from the list of normal wires (S24), and transmits a relay control signal of the wire, thereby opening a relay for signal transmission for disconnection detection and displaying the original signal ( 230) Step S25 of closing the relay for transmission is performed.

After step S25, the built-in controller 180 checks whether the currently connected wiring is disconnected (S26), and if it is determined that it is disconnected, relays are controlled by sequentially or randomly selecting one wiring from the list of normal wirings. Step S27 is performed by sending a signal to open the relay of the disconnected wiring and closing the relay of the selected normal wiring.

Thereafter, the built-in controller 180 communicates with the outside to transmit the disconnection detection state of all the wires (S28).

Effect according to the invention

The above-described embodiments of the present invention can be implemented through various means. For example, embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof.

For implementation by hardware, the method according to embodiments of the present invention includes one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs) , Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like.

In the case of implementation by firmware or software, the method according to embodiments of the present invention may be implemented in the form of a module, procedure, or function that performs the functions or operations described above. The software code can be stored in a memory unit and driven by a processor. The memory unit is located inside or outside the processor, and can exchange data with the processor by various known means.

The detailed description of preferred embodiments of the present invention disclosed as described above has been provided to enable those skilled in the art to implement and practice the present invention. Although described above with reference to preferred embodiments of the present invention, those skilled in the art will appreciate that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can use each of the configurations described in the above-described embodiments in a manner of combining with each other. Accordingly, the present invention is not intended to be limited to the embodiments presented herein, but to give the broadest scope consistent with the principles and novel features disclosed herein.

The invention may be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the above detailed description should not be construed as limiting in all respects, but should be considered illustrative. The scope of the invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention. The invention is not intended to be limited to the embodiments presented herein, but rather to give the broadest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims can be combined to form an embodiment or included as a new claim by correction after filing.

Claims

In the switching control method between multiple wires,

A first step in which an original signal in the form of voltage or current is input to the first device;

A second step in which the first device converts the original signal into a current form by using a voltage-to-current converter when the original signal is in a voltage form;

A third step of converting the original signal converted into the current form or the original signal in the current form into a signal having a preset current range by using the second current-to-current converter. ; And

And a fourth step in which the first device transmits the original signal converted into a preset current range to a second device.
According to claim 1,

The preset current range is 4 ~ 20 mA switching control method between multiple wires, characterized in that.
According to claim 1,

After the fourth step,

A fifth step of restoring a current range of the original signal based on the preset range using a second current-current converter in the second device; And

And a second step of re-converting to a form of an original signal input to the first device by selectively using a current-to-voltage converter in the second device. Control method for switching between multiple wires.
According to claim 1,

Between the third and fourth steps,

Inputting the original signal converted to the preset current range into a plurality of relays; And

Through control, only the first relay among the plurality of relays is connected, and the remaining relays are opened.

In the fourth step, the control method for switching between multiple wires, characterized in that through the first relay, the original signal converted to the preset current range is transmitted to the second device.
The method of claim 4,

The selection of the first relay is performed by a demultiplexer method or a direct control method using an embedded controller.
The method of claim 4,

The plurality of relays, a mechanical relay element and a semiconductor relay (SSR: Solid State Relay) element is composed of at least one of the switching control method between multiple wires.
The method of claim 4,

Each of the plurality of relays is disposed adjacent to each of the plurality of disconnection detection relays, and is electrically separated,

When the first relay is selected,

The first disconnection detection relay disposed adjacent to the first relay among the plurality of disconnection detection relays is switched between multiple wires, characterized in that it is open to the original signal converted to the preset current range. Control method.
The method of claim 7,

When the first relay is selected,

Of the plurality of disconnection detection relays, the remaining disconnection detection relays disposed adjacent to the remaining relays are connected to the original signal converted into the preset current range,

A method of controlling switching between multiple wires, characterized in that the original signal converted into the preset current range transmitted through the remaining disconnection detection relay is transmitted to an input of a control controller rather than the second device.
In a system for switching between multiple wires,

When the original signal in the form of voltage or current is input to the first device, and the original signal is in the form of voltage,

The first device,

Using the voltage-to-current converter (Voltage-to-Current Converter), the original signal is converted into a form of current,

The original signal converted into the current form or the original signal in the current form is converted into a signal in a preset current range by using a second current-to-current converter,

A system for switching between multiple wires, characterized in that the original signal converted to the preset current range is transmitted to a second device.