KR200453993Y1 - Portable Line Tester - Google Patents

Abstract

The present invention relates to a portable line tester that integrates several functions of multi-functional auxiliary equipment used for new construction of a communication line and maintenance of an existing line. In particular, it has all the functions of testing the condition and quality of a wired communication line. It is possible to measure the light level to identify the connection status during the new construction of the FTTH optical line, and to easily test the connection status of the LAN cable to be assembled and connected in the field, minimizing the work error due to the wrong connection. The present invention relates to a portable line tester that can be manufactured in a small size and is easy to carry, and can reduce costs and improve quality by simply replacing expensive and expensive dedicated instruments.

Portable, FTTH Optical Track, Track Testing Machine

Description

Portable Line Tester

The present invention relates to a portable line tester incorporating various functions of auxiliary equipment used for new construction and maintenance of communication lines. In particular, the present invention has all the functions of testing the condition and quality of wired communication lines, and recently, the FTTH optical line It is possible to measure the light level to identify the connection status during the new construction, and to easily test the connection status of the LAN cable to be assembled and connected in the field, minimizing operation error due to incorrect connection, and miniaturization and light weight. The present invention relates to a portable line tester that is easy to carry and is easy to carry, and can easily reduce expensive and dedicated measuring instruments to reduce costs and improve quality.

Telecommunication lines are connected to subscribers through underground pipelines and ground poles through complex connection processes at telephone exchanges, and thus, various lines such as induced noise, which is a factor degrading line quality from the surrounding environment, and line quality deterioration due to line defects and aging. Obstacles arise. In order to maintain the best quality of the voice communication service or high-speed information communication service of such communication line, not only the communication line should be checked from time to time, but also when the communication line has a failure, the communication line is tested for prompt action to promptly fix the faulty part. You must find it.

As described above, a portable line tester is used for detecting a faulty part of a communication line and for rapid processing.

1A and 1B show an embodiment of a conventional portable line tester, which includes a keypad 1 located at the top of the rear side and having a numeric key from 0 to 9 for inputting a telephone number, and the keypad (1). Redial push switch (2) and hook switch (3) located adjacent to the unit, a dialing instruction lamp (4) that recognizes the dialing by the keypad (1) when the telephone number is input, and informs the outside; Portable ring (5) for fixing to any hook, the receiver is located on the top of the front to hear the voice signal, and the transmitter (7) located on the bottom of the front to send the operator's voice to the other party (7) ), A meter (8) for visually displaying the measured value of the resistance state or the state of the telephone capacity, a measurement switch (9) for selecting to measure the insulation resistance and the telephone capacity of the subscriber, and an electronic or mechanical A tone pulse switch 10 for selecting according to the switchboard method, a monitor switch 11 for selecting an automatic answering service or a loud signal to be heard, and a call for selecting to contrast by calling a subscriber A switch 12, a lamp 13 indicating in time that the call switch 12 is on, and a combined clip 15 of a short and a needle at the end and protruding from the lower surface to check against all the tests And a lead wire 14 for carrying out a call test.

The portable line tester as described above can not only make a line tester in the field and make a call while making a phone call, but also can directly talk with a subscriber, as well as the capacity, ground, short circuit, short circuit and insulation resistance of the phone. The fault condition could be determined by determining the state of.

However, the conventional portable line tester as described above is to check the fault of the communication line providing the signal, and in the present situation where all communication is made digital, only the telephone line to which the telephone is connected can be tested. Not only is it unsuitable for the communication line, but there is a problem that the received signal of the optical cable used for high speed data transmission cannot be checked.

The present invention provides a portable line tester for measuring the optical level of the optical cable and the connection test of the LAN cable, as well as the conventional test functions such as the conventional analog or digital line insulation, earth, short circuit, disconnection, subscriber capacity measurement, etc. For the purpose of

In particular, it is possible to measure the light level to identify the connection status during the new construction of the recent FTTH optical line, and to easily test the connection status of the LAN cable that is assembled and connected in the field. Its other purpose is to minimize work errors.

In addition, it is another object of the present invention to make the tester small and light, which is easy to carry, and to easily replace many expensive dedicated measuring instruments, thereby enabling cost reduction and quality improvement.

In order to achieve the above object, the present invention is a portable line tester for measuring the capacity, sergeant, disconnection, short circuit, insulation resistance of the subscriber side to repair the fault part of the line, the optical signal output from the system to the connector An optical connection unit for inputting a voltage and outputting a voltage corresponding to the input optical signal; And an amplifier for amplifying the signal output from the optical connection unit, converting the signal into a decibel voltage, and outputting the signal, and diagnosing the failure by the resistance, capacitance, and voltage values of the optical line using the signal output from the amplifier. It provides a portable track tester.

The present invention can check the line status and quality of the call, data transmission, etc. using a wired line using a single portable line tester.

In addition, it is possible to measure the level of light to identify the connection status during the new construction of the FTTH optical line, and to easily test the connection status of the LAN cable to be assembled and connected in the field. Work errors can be minimized.

In addition, since the tester is manufactured in a small and light weight, it is easy to carry, and it is possible to reduce the cost and improve the quality by simply replacing various expensive dedicated measuring instruments.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 2 schematically shows the configuration of a portable tester of the present invention, the diagnostic means 100 for measuring the optical decibel level of the short circuit or optical line of the line or LAN cable; A communication means 200 configured as the diagnosis means 100 and for communication with a subscriber or a telephone station during troubleshooting; An MPU (300) for controlling the diagnostic means (100) and the communication means (200) and having an input / output terminal of a signal; A keypad 400 for inputting data or control commands to be measured by the MPU 300; The power supply 500 is connected to the MPU 300 and supplies power.

In more detail, the diagnosis means 100 includes a matching circuit 101 for configuring a circuit according to the distribution circuit used for voltage measurement, the constant voltage circuit for resistance measurement, and the measurement function of the distribution circuit. ; A constant voltage unit (102) for generating a constant voltage for resistance measurement output from the matching unit (101); An optical connection unit 103 for inputting an optical signal output from a telephone station through a connector and outputting a voltage corresponding to the input optical signal; An amplifier (104) for amplifying the signal output from the optical connection unit (103), converting the signal into decibel voltages, and outputting the decibel voltage; A resistor, capacitor and voltage divider 105 for receiving and distributing a constant voltage from the constant voltage unit 102 circuit or a decibel voltage from the amplifier 104; A control signal selector (106) for selecting signals distributed by the resistors, capacitors, and voltage dividers according to respective measurement functions; An analog meta 107 for measuring a voltage, resistance, light level, etc. measured according to a signal selected by the control signal selector; A booster 108 for converting the signal divided by the resistor, the capacitor and the voltage divider 105 into a voltage of 50 V by using a regulator to generate a ring voltage and a constant voltage for measuring insulation resistance; The ring signal generator 109 converts the ring voltage output from the booster 108 into a bipolar signal and outputs a ring signal.

In this case, the matching unit 101 includes a distribution circuit used for voltage measurement, a constant voltage circuit and distribution circuit used for resistance measurement, and an input protection circuit for preventing a malfunction of equipment due to user carelessness.

In addition, the constant voltage generated by the constant voltage unit 102 is a voltage for resistance measurement and applies a voltage to the resistance under measurement and two voltages are used. One is used for measuring general resistance, and the other is to measure insulation resistance. The higher the voltage is used, the greater the insulation resistance can be measured. In addition, the constant voltage is connected in series to the analog meta 107 through a distribution resistor and connected to the test terminal, and the current flowing through the measurement terminal connected to the test terminal is represented by the analog meta 107 and the measured resistance is measured. Connected in parallel with

In addition, the optical connection unit 103 is a connection unit for inputting an optical signal, and has a structure that can be easily attached and detached using a general SC / PC connector, and the optical signal output from the telephone station is connected to the input optical signal through the connector. An InGaAs Pin photodiode is provided which changes the voltage according to a corresponding current.

In addition, the resistance, capacitance, and voltage divider 105 is controlled by the MPU 300 and divides the input voltage for the voltage measurement and leads to the analog meta 107, and boosts for the measurement of the resistance or capacity. The control unit 108 is configured to configure a circuit output to the test terminal.

In addition, the analog meta (107) displays the results of each measurement function and used the F / S 500uA and displays the voltage, resistance, level, and the like as a scale.

In addition, the boosting unit 108 includes a high voltage regulator, and the high voltage regulator can be used as a voltage for generating a ring signal by boosting the voltage of 5V to 50V, and the boosted voltage is insulated. It is used as a constant voltage for resistance measurement and can reduce power consumption to operate only in ring or resistance measurement.

Next, the communication means (200) is controlled by the MPU (300), using a circuit having a large alternating current impedance (Hook) circuit unit (Hook) circuit having a flash (Flash) and a call function; A DTMF generation unit 202 controlled by the MPU and generating a DTM code using a dedicated IC; An earphone microphone 203 having a handset function used in a general telephone and used by an operator to wear it on the ear; A ring receiver 204 for detecting a ring signal; A monitor for checking whether the subscriber has left the receiver for a long time due to a signal of a connected line or if the subscriber is in a busy state for a long time due to a short circuit of the line, and a speakerphone that can listen to the sound without using the earphone microphone 203. Configured monitor / speakerphone 205.

Next, the call means 200 is controlled by the MPU 300, hook circuit unit 201 having a flash (Flash) and a call function using a circuit having a large alternating current impedance; A dual-tone multifrequency (DTMF) generation unit 202 controlled by the MPU and generating a dual-tone multi (DTM) code using a dedicated IC; An earphone microphone 203 having a handset function used in a general telephone and used by an operator to wear it on the ear; A ring receiver 204 for detecting a ring signal; A monitor for checking whether the subscriber has left the receiver for a long time due to a signal of a connected line or if the subscriber is in a busy state for a long time due to a short circuit of the line, and a speakerphone that can listen to the sound without using the earphone microphone 203. It consists of a configured monitor / speakerphone 205.

The DTMF generator 202 uses a dedicated IC for generating a DTMF code and is controlled by the MPU to output 0 to 9, *, and # codes, and the ring receiver detects the reception of the ring in the incoming function of the subscriber telephone. As a circuit for removing a DC voltage supplied from a telephone station, a nonpolar capacitor is used in series to detect only an AC component of a ring voltage, and a photo coupler for converting a signal input from the MPU 300 to a TTL level is used. It can protect the equipment from high voltage.

Next, the MPU (Micro Processor Unit) 300 functions to control all inputs and outputs, and is controlled by a program and operated at low power because it is portable using a battery. The flash memory 302 stores the program; An SRAM 303 for storing various data measured by the diagnostic means; An input / output terminal 305 for connecting a telephone line, an optical cable, and a LAN cable; A / D converter, D / A converter, a processor including a timer (304) for measuring the time required for each measurement, by controlling the port of the measurement function corresponding to the signal input to the keypad 400 It performs a function to express the result in the analog meta (107).

Next, the keypad 400 is composed of a key for selecting an LED display function and a number and symbol key of a dial pad. The keypad 400 is a means for a user inputting a key to select a corresponding function to obtain a result, as shown in FIG. 3. A power LED indicating whether power is supplied to the portable line tester; Low batt LED, which lights when the battery of the portable line tester is almost exhausted; Hook LED that is turned on when the hook is off; A data signal indicating whether or not data is overlapped; a green signal when displaying a PSTN measurement value, a yellow signal when displaying a data value, and a red LED when the PSTN measurement value and a data value are simultaneously displayed; LEDs, such as LAN LEDs, are available to indicate LAN cable test results. In addition, the lower portion of the LED power button for turning on or off the power; A capacitive button capable of measuring capacitance; Insulation button for measuring the insulation resistance; A voltage button capable of measuring a DC voltage; Resistance button that can know whether the short circuit by measuring the resistance of the line; An optical level button capable of measuring the optical level; A LAN button for testing the LAN cable connection; A DATA button for measuring data overlap; CALL button for the call test to the subscriber side; A FLASH button capable of redialing to a subscriber side; TALK / MON button to select call or monitor; And input buttons such as numbers 0 to 9 or buttons marked with * and # symbols.

Next, the power supply unit 500 is designed as a low-power circuit for controlling only the constant voltage circuit required for the internal circuit and the minimum circuit required for each function by using a 9V common battery.

In addition, the portable line tester may further comprise an EEP-ROM (600) to use a memory that can be electrically read and write as a measurement data calibration data memory.

As described above, the portable line tester according to the present invention can check whether there is a failure by measuring the decibel level information of the optical line hypothesized for data communication such as the Internet as well as the conventional general telephone line.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only for explaining the invention, and those skilled in the art to which the present invention belongs will various modifications or equivalents from the detailed description of the invention. It will be appreciated that one embodiment is possible. Therefore, the true scope of the present invention should be determined by the technical spirit of the claims.

1A and 1B show an embodiment of a conventional portable line tester.

Figure 2 is a block diagram schematically showing the configuration of a portable line tester according to the present invention.

Figure 3 is a view showing the configuration of the front keypad of a portable line tester according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: diagnostic means 101: matching part

102: constant voltage unit 103: optical connection unit

104: amplifier 105: resistor, capacitance, voltage divider

106: control signal selector 107: analog meta

200: communication means 201: hook circuit

200: call means 201: hook circuit

202: DTMF generator 203: earphone microphone

204: ring receiver 205: monitor / speaker phone

300: MPU 301: 12bit ADC

302 flash memory 303 SRAM

304: timer 305: input / output terminal

400: keypad 500: power supply

600: EEP-ROM

Claims (6)

Diagnostic means 100 for measuring the communication line short circuit, LAN cable connection and the optical decibel level of the optical path, the communication means 200 is connected to the diagnostic means 100 for communication with the subscriber or telephone station during troubleshooting, The MPU 300 which controls the diagnostic means 100 and the communication means 200 and has an input / output terminal of a signal, a keypad 400 for inputting data or a control command to be measured by the MPU 300, and the MPU. In the portable line tester having a power supply 500 connected to the 300 to supply power, The diagnostic means 100, A matching unit 101 including a distribution circuit used for voltage measurement and a constant voltage circuit for resistance measurement; A constant voltage unit (102) for generating a constant voltage for resistance measurement output from the matching unit (101); An optical connection unit 103 for inputting an optical signal output from a telephone station through a connector and outputting a voltage corresponding to the input optical signal; An amplifier (104) for amplifying the voltage output from the optical connection unit (103) and converting it into a decibel voltage; A resistor, capacitor and voltage divider 105 for receiving and distributing a constant voltage from the constant voltage unit 102 circuit or a decibel voltage from the amplifier 104; A control signal selector 106 for selecting a signal controlled by the resistance, capacitance, and voltage divider according to each measurement function; An analog meta 107 for displaying a voltage, resistance, light level, etc. measured according to the signal selected by the control signal selecting unit 106; A booster 108 generating a constant voltage for measuring ring voltage and insulation resistance by boosting the signal divided by the resistor, the capacitor and the voltage divider 105 using a regulator; And a ring signal generator (109) for converting the ring voltage output from the boosting unit (108) into a bipolar signal and outputting a ring signal. delete The method of claim 1, The optical connection unit 103 An SC / PC connector for receiving an optical signal; And an InGaAs Pin photodiode connected with the connector to change the voltage according to the current corresponding to the input optical signal. The method of claim 1, The communication means 200, A hook circuit unit 201 controlled by the MPU 300 and having a flash and a call function using a circuit having a large AC impedance; A DTMF generation unit 202 controlled by the MPU and generating a DTM code using a dedicated IC; An earphone microphone 203 having a handset function used in a general telephone and used by an operator to wear it on the ear; A ring receiver 204 for detecting a ring signal; With a monitor to confirm that the subscriber has left the receiver for a long time due to the signal of the connected line or is in a busy state for a long time due to a short circuit of the line, and a speakerphone to listen to the sound without using the earphone microphone 203. Portable line tester, characterized in that consisting of a monitor / speaker phone (205). The method of claim 1, The MPU 300, Flash memory 302 for storing the program for controlling all input and output of the diagnostic means, An SRAM 303 for storing measured data, A timer 304 for measuring each time required for the measurement, A portable line tester comprising an input / output terminal 305 for connecting a telephone preference, an optical cable, or a LAN cable. The method of claim 1, The portable line tester further comprises an EEP-ROM (600) for storing measured data calibration data.

Images