• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring a length of a communication cable, comprising: a clock generator for generating a clock signal of a predetermined period by an oscillation circuit by a crystal, and generating data within a required time according to the occurrence of external thought required for data processing; 18 and the real-time generator 16, the microcomputer 14 for comparing and determining the input signal or outputting the corresponding control signal, and a program or reference data necessary for the control of the microcomputer 14 and the peripheral device are incorporated. And a memory unit 20 and a database unit 22 in which reference data values relating to a length of a communication cable and a transmission time are set, and data relating to the real time input from the microcomputer 14 are machine words or time signals. A time signal converter 24 for converting into a digital signal, and first and second shift registers for shifting an input machine word or a digital signal; Buffers 26 and 40, first and second voltage level converters 28 and 38 for converting an input signal into a voltage level of a predetermined magnitude, and converting the converted voltage level into a logic signal to send out a predetermined bit and Transmitter 30 and receiver 36 to receive, transmitting and receiving drivers 32 and 34 which amplify a fixed signal of a predetermined size, and inputted logic signals and time-related data are compared to compare the signals. An OP amplifier 42 for outputting to the microcomputer 14, a display means 10 for visually displaying information about the length of the communication cable 35, and an input means 12 for inputting various data and information. This is to accurately measure the length of the cable connected to the two communication periods.
    公开号:KR19980052621A
    申请号:KR1019960071638
    申请日:1996-12-24
    公开日:1998-09-25
    发明作者:김형태
    申请人:배순훈；대우전자 주식회사；
    IPC主号:
    专利说明:

    Communication cable length measuring device
    The present invention relates to a device for measuring the length of the communication cable, and more particularly to a device for measuring the length of the communication cable for measuring the length of the cable connected to the two communication periods to determine the communication speed and the terminal resistance data .
    Communication is the transmission of information between each other. It is the transmission of data over short or long distances by voice, mail, message, telephone, telegraph, microwave, telegraph, or other means. Such communication includes a communication line, a communication method, a communication device, and the like as a medium for transmitting information. Communication lines include public communication lines, specific communication lines, dedicated lines, data communication service lines, and new data networks. The communication methods include one-way communication, single-duplex communication, and full-duplex communication.
    As described above, in the communication for transmitting and receiving information by wire between two points, the wired communication can calculate the terminal resistance and impedance required for communication or calculate the maximum communication speed only when the length between the communication devices connected with various communication cables is correctly recognized. . In order to measure the length of the communication cable in such a communication period, a measurement tool such as a human eye, a guess, or a tape measure has been conventionally used.
    However, if the length of the communication cable is measured in the same way as the conventional method, there is a problem that the cable remains redundant or short when the communication cable is installed. It was not possible to accurately determine the communication error regarding possible leakage. In addition, the termination resistance and the maximum transmission speed of the communication cable has a cumbersome problem that must be measured after installation of the cable.
    The present invention has been made to solve the above problems, by inputting the real-time to one end of the cable to be installed or installed to determine the time received from the other party to measure the exact length of the communication cable, maintaining the communication cable And to provide a communication cable length measuring device that can accurately determine the repair, impedance, termination resistance and communication speed.
    1 is a block diagram of an apparatus for measuring the length of a communication cable according to the present invention.
    ♣ Explanation of symbols for the main parts of the drawing ♣
    10: display means 12: input means
    14: Micom 16: Real-time generator
    18: clock generator 20: memory section
    22: database unit 24: time signal converter
    26, 40: shift register buffer 28, 38: voltage level converter
    30: transmitter 32: driver for transmission
    34: Driver for reception 36: Receiver
    42: OP amplifier
    In order to achieve the above object, the present invention provides a communication device for transmitting and receiving information by a wired cable between two points, comprising: a clock generator for generating a clock signal of a predetermined period by an oscillation circuit by a crystal; A real-time generator for generating and inputting data within a time required according to the occurrence of external thought required for data processing; a microcomputer for comparing and determining an input signal and outputting a corresponding control signal; A memory unit in which a program or reference data necessary for controlling a peripheral device is embedded; a database unit in which reference data values relating to a length and a time of a communication cable are transmitted to the micom; and a data relating to real time input from the micom When converting into a mechanical or digital signal related to the signal The inter-signal converter, a first shift register buffer for shifting a parallel gear or digital signal input from the time signal converter into a serial state, and converting a signal input from the first shift register buffer to a predetermined voltage level. A first voltage level converter to convert the voltage level converted by the first voltage level converter into a logic signal, and transmits the signal by a predetermined bit, and sends or receives the voltage level transmitted from the transmitter to a communication cable to measure the voltage level. A transmission driver and a reception driver for amplifying the signal to a fixed signal, a second voltage level converter for converting a voltage level of a predetermined magnitude received from the reception driver into a logic signal, and a conversion in the second voltage level converter. A second shift register buffer for converting the voltage level of the series state into a parallel state; OP amplifier which compares the logic signal input from the 2 shift register buffer with the data about time by a certain bit input from the time signal converter, and outputs the compared signal to the microcomputer, and the length of the communication cable output from the microcomputer. And display means for visually displaying information, and input means for inputting various data and information to the microcomputer.
    Hereinafter, a length measuring apparatus of a communication cable according to the present invention will be described based on the accompanying drawings.
    1 is a block diagram of an apparatus for measuring the length of a communication cable according to the present invention.
    The clock generator 18 generates a clock signal of a predetermined period in the oscillation circuit by the crystal. The clock generator 18 generates a clock signal for using a controller, a memory device, an input / output device, or the like, and the clock signal is a logic signal such as high or low.
    The real-time generator 16 generates and inputs data in a time required for the clock signal generated from the clock generator 18 in accordance with the occurrence of external thought required for data processing.
    The microcomputer 14 compares and judges the input signals and outputs the corresponding control signals. The microcomputer 14 calculates or determines the data regarding the real time as the data regarding the length. The memory unit 20 includes a program or reference data necessary for controlling the microcomputer 14 and the peripheral device, and the database unit 22 provides a reference regarding the length of the communication cable or the time transmitted to the microcomputer 14. The data value is set.
    The time signal converter 24 converts the data related to the real time input from the microcomputer 14 into a mechanical signal or a digital signal related to the time signal, and the first shift register buffer 26 is provided from the time signal converter 24. The first parallel voltage level converter 28 converts an input parallel machine signal or digital signal into a serial state. The first voltage level converter 28 converts a signal input from the first shift register buffer 26 into a voltage level of a predetermined size. 30 converts the voltage level converted by the first voltage level converter 28 into a logic signal and sends out a predetermined bit.
    The driver 32 for transmission and the driver 34 for receiving have a function of amplifying the voltage level transmitted from the transmitter 30 into a shaped signal for transmitting or receiving the communication cable 35 to be measured.
    The second voltage level converter 38 converts a voltage level of a predetermined magnitude received from the reception driver 34 into a logic signal, and the second shift register buffer 40 converts the second voltage level converter 38 into a logic signal. ) Converts the voltage level of the converted series into a parallel state.
    The OP amplifier 42 compares the logic signal inputted from the second shift register buffer 40 with the data related to time by a predetermined bit input from the time signal converter 24, and compares the compared signal to the microcomputer 14. Output it.
    The display means 10 visually displays information about the length of the communication cable 35 output from the microcomputer 14, and the input means 12 inputs various data and information into the microcomputer 14. will be.
    The operation of the present invention configured as described above will be described in detail.
    The clock signal generated by the clock generator 18 is input to the microcomputer 14 in a very precise time state as the time required by the real time generator 16. This generates a time divided by at least 1/1000 second. In other words, the time up to 00: 00: 00.00 seconds is input to the microcomputer 14. The microcomputer 14 outputs the input signal related to the real time to the time signal converter 24, and the time signal converter 24 converts the fixed time into a machine word or a digital value to be transmitted.
    The digital signal converted by the time signal converter 24 has a parallel present time value, is input to the first shift register buffer 26, waits at a current present time value in series, and then the first voltage level converter 28 is turned on. Logical voltage levels are converted into voltage levels of a predetermined magnitude to be output to the communication cable 35 by one bit.
    The predetermined level voltage level converted by the first voltage level converter 28 is input to the driver 32 for transmission via the transmitter 30 and connected to a predetermined length or received through a communication cable 35 to be connected ( 34). The voltage level received by the driver 32 for transmission, the communication cable 35 to be measured, and the driver 34 for reception are amplified by a shaped signal and then input to the receiver 36. The high voltage signal received at the receiver 36 is converted back to a logical voltage level through the second voltage level converter 38, and the converted voltage level is passed through the second shift register buffer 40 in parallel. Is shifted to a time value of and applied to the input terminal of the OP amplifier 42 one by one.
    The input terminal of the OP amplifier 42 compares the information about the time signal inputted from the time signal converter 24 and the second shift register buffer 40 by one bit and inputs it to the microcomputer 14.
    Therefore, the microcomputer 14 compares the data regarding the input time information with reference data set in the database unit 22 with digital delay information according to time and calculates the delay time, thereby calculating the length of the communication cable 35. Can be converted. At this time, micom (R T + D T = T (total time) + α (delay coefficient) = L (communication cable length), which is a formula between Real Time (R T ) and Delay Time (D T )). 14 can convert the length of the communication cable 35.
    The length of the communication cable 35 calculated by the microcomputer 14 is visually displayed through the display means 10. Accordingly, by recognizing the length of the communication cable 35 to be measured through the display means 10, an impedance, a termination resistance or a maximum communication speed corresponding to the length of the communication cable 35 can be calculated. The length and installation of 35) and additional calculations can be obtained.
    As described above, the communication cable length measuring apparatus of the present invention measures the time difference derived from the comparison with the time delayed after communicating real time with the communication cable, and converts it into the length of the communication cable, Since the length can be measured, the maintenance and repair of the already installed communication cable and the determination and recording of the impedance and the specific resistance can be carried out, thereby improving the operation and communication efficiency of the communication cable.
    权利要求:
    Claims (1)
    [1" claim-type="Currently amended] In the communication device for transmitting and receiving information by wire cable between two points,
    A clock generator 18 for generating a clock signal of a predetermined period by an oscillation circuit by a crystal,
    A real-time generator 16 for generating and inputting data in a time required according to generation of external thought required for data processing by the clock signal generated from the clock generator 18;
    A microcomputer 14 for comparing and determining an input signal and outputting a corresponding control signal;
    A memory unit 20 in which a program or reference data necessary for controlling the microcomputer 14 and the peripheral device are embedded;
    A database unit 22 in which reference data values relating to a length of a communication cable and a time transmitted to the microcomputer 14 are set;
    A time signal converter 24 for converting data related to the real time input from the microcomputer 14 into a machine language or a digital signal relating to a time signal;
    A first shift register buffer 26 for shifting the machine signal or digital signal in a parallel state input from the time signal converter 24 into a serial state;
    A first voltage level converter 28 for converting a signal input from the first shift register buffer 26 into a voltage level of a predetermined magnitude;
    A transmitter 30 for converting the voltage level converted by the first voltage level converter 28 into a logic signal and sending out a predetermined bit;
    A transmission driver 32 and a reception driver 34 for amplifying a voltage level transmitted from the transmitter 30 to a shaped signal for transmission or reception by a communication cable 35 to be measured;
    A second voltage level converter 38 for converting a voltage level of a predetermined magnitude received from the reception driver 34 back into a logic signal;
    A second shift register buffer 40 for converting the voltage level of the series state converted by the second voltage level converter 38 into a parallel state;
    OP amplifier 42 for comparing the logic signal input from the second shift register buffer 40 with the data related to time by a predetermined bit input from the time signal converter 24 and outputting the compared signal to the microcomputer 14. )Wow,
    Display means (10) for visually displaying information on the length of the communication cable (35) output from the microcomputer (14);
    Length measuring device of a communication cable, characterized in that it comprises an input means for inputting a variety of data and information to the microcomputer (14).
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    同族专利:
    公开号 | 公开日
    KR100211869B1|1999-08-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1996-12-24|Application filed by 배순훈, 대우전자 주식회사
    1996-12-24|Priority to KR1019960071638A
    1998-09-25|Publication of KR19980052621A
    1999-08-02|Application granted
    1999-08-02|Publication of KR100211869B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019960071638A|KR100211869B1|1996-12-24|1996-12-24|Apparatus for measuring length of communication cable|
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