KR200450051Y1 - A portable data communication line tester - Google Patents

Abstract

The present invention relates to a portable line tester, and its object is to control a plurality of circuit parts through a single microcomputer (CPU), thereby making it possible to construct a circuit configuration more compact, reduce manufacturing cost, So that the user can be notified when the battery is to be replaced.

For this purpose, according to the portable line tester according to the present invention, A switching-circuit unit 100 connected to the tip line and the ring line of the line via lead lines L1 and L2, respectively, and provided with a hook / monitor switch 110; A subscriber-paging circuit unit 200 connected to the switching-circuit unit 100 and outputting a ring signal by operation of the subscriber paging switch 210 and outputting the ring signal to the subscriber's phone; An insulation resistance measuring circuit unit 300 connected to the switching-circuit unit 100 and measuring the insulation resistance of the line connected through the lead lines L1 and L2 and having a measurement display unit 310 for displaying a measured value to the outside )Wow; An incoming circuit unit 500 disposed on the upstream side of the switching-circuit unit 100 for informing the reception state of the line through a speaker 400; A monitor circuit unit 600 disposed on an upstream side of the switching-circuit unit 100 for monitoring a connection state of the line and outputting voice through the speaker 400; A dial circuit 720 provided on the downstream side of the switching-circuit unit 100 and associated with the tone-pulse switch 721 and the keypad 722, a communication circuit 710 for communication with the subscriber, A communication unit 700 having a hands-free headset 730 associated with a communication circuit 710; A data sensing circuit unit 800 connected to an upstream side of the switching-circuit unit 100 and interrupting a line with the communication unit 700 when the line is connected to a data line, which is an online network; A circuit protection unit 950 having an overcurrent cut-off switch 951 and an overvoltage safety element 952 disposed on the upstream side of the switching-circuit unit 100 for protecting the internal circuit of the portable line tester from the line- )Wow; For selectively connecting the signal output lines of the monitor circuit unit 600 or the incoming circuit unit 500 to the speaker 400 by being connected to the signal output lines of the monitor circuit unit 600 and the incoming circuit unit 500, A connection control circuit unit 900; A battery voltage measuring circuit 920 for measuring the voltage of the battery 921 that supplies power to each of the circuit units in real time; The monitoring circuit unit 600, the data sensing circuit unit 800, the data input / output unit 800, and the switching circuit unit 100 are electrically connected to each other by an electrical signal input from the dial circuit 720 of the communication unit 700 and the switching circuit unit 100, A main control unit 930 for controlling the connection control circuit unit 900 and generating a warning sound through the speaker 400 when the voltage level input from the battery voltage measurement circuit 920 is lower than a set voltage level; .

Portable, track, test, microcomputer, control, circuit, battery, voltage

Description

{PORTABLE DATA COMMUNICATION LINE TESTER}

The present invention relates to a portable line tester, and more particularly, to a portable line tester for easily testing a line condition by an operator so as to quickly and accurately process line installation, maintenance, or troubleshooting.

Generally, the track is connected to the subscribers through the underground channel and the ground through the complex connection process at the telephone exchange. In order to troubleshoot such a line, the line maintenance personnel must carry on or carry out various heavy equipments, test it on site, or take the test to the laboratory personnel of the telephone office, and be notified of the condition of the line and the fault condition. .

As such, line maintenance personnel have a disadvantage in that their operation force is not sufficient for carrying or carrying heavy and bulky equipment and repairing troubles, and also it takes a lot of work time by working through the call connection with the laboratory personnel.

In order to solve such disadvantages, a pocket type line tester (Practical New Design Registration No. 20-0177430, registered on the date of registration 2000 Jan. 24) has been opened.

The pocket type line tester disclosed in Registration Utility Model No. 20-0177430 includes: A hands-free earset (32) capable of making a call without using a hand when an operator works on a pole, and a call receiver (13, 34) for confirming a call reception status; A work clip (10, 11) for connecting to a line to be worked; A hook switch (12) connected to the line; A subscriber calling unit (16, 17, 23) connected to the hook switch (12) for outputting a ring signal to a subscriber's telephone; A core wire control unit connected to the hook switch to make a cable core line check while talking to the other party, an insulation resistance measurement circuit unit for measuring an insulation resistance of the line, A data line recognizing section 33 composed of a data lock circuit so as not to interfere with the quality of the data line; Circuit protectors (18, 19, 20) for protecting internal circuits of the pocket-like line testing machine from abnormal voltages; And a communication unit (27, 28, 29) for making a call with the subscriber.

Therefore, the operator (line maintenance personnel) can directly send a call signal directly to the subscriber through a pocket-type line tester, and can use the insulation resistance measurement circuit portions 22 and 25 and the hands-free earset 32, Thus, safety and efficiency can be improved by allowing the operator to work with both hands while talking on the telephone. In addition, there is an advantage that it is not necessary to use a separate cable core line balancer by performing the core wire collation work through the core wire collation sections 24 and 26 built in the core wire collation section.

However, in the conventional pocket-type line testing machine, the battery is supplied with power and the line test is performed. In addition, in the conventional pocket-type line testing machine, a microcomputer (CPU) for control is separately provided in each of the circuit portions, which not only complicates the circuit configuration but also causes a rise in manufacturing cost.

The present invention addresses this problem. An object of the present invention is to provide a portable line tester which can constitute a circuit configuration more compactly by controlling a plurality of circuit sections through a single microcomputer (CPU) and can reduce manufacturing cost.

Another object of the present invention is to provide a portable line tester capable of maximizing the convenience of use by measuring the battery voltage in real time to inform the user of the battery replacement timing.

The present invention for achieving this object is as follows. 1. A portable line tester for testing the presence or absence of an abnormality of a line by connecting to a tip line and a ring line of a line and transmitting and receiving the line to and from a telephone station or a subscriber,

The portable line tester includes: A switching-circuit unit connected to the tip line and the ring line of the line via lead lines, respectively, and having a hook / monitor switch; A subscriber-call circuit unit connected to the switching-circuit unit and outputting a ring signal by operation of a subscriber call switch and sending the ring signal to a subscriber's telephone; An insulation resistance measuring circuit part connected to the switching circuit part and measuring the insulation resistance of the line connected through the lead line and having a measurement display part for displaying the measurement value to the outside; An incoming circuit unit disposed on an upstream side of the switching-circuit unit for informing a reception state of the line through a speaker; A monitor circuit unit disposed on an upstream side of the switching-circuit unit for monitoring a connection state of the line and outputting voice through the speaker; A communication unit provided on the downstream side of the switching circuit unit and having a communication circuit for communication with a subscriber, a dial circuit connected with a tone-pulse switch and a keypad, and a hands-free headset associated with the communication circuit; A data detection circuit unit connected to an upstream side of the switching-circuit unit and interrupting a line with the communication unit when the line is connected to a data line, which is an online network; A circuit protection unit disposed on an upstream side of the switching-circuit unit and having an overcurrent shut-off switch and an overvoltage safety element for protecting an internal circuit of the portable line tester from the line-side abnormal voltage; A connection control circuit unit connected to the monitor circuit unit and the signal output line of the receiving circuit unit for selectively connecting the signal output lines of the monitor circuit unit or the incoming circuit unit to the speaker side; A battery voltage measuring circuit for measuring a voltage of a battery supplying power to each of the circuit portions in real time; And controls the incoming circuit unit, the monitor circuit unit, the data sensing circuit unit, and the connection control circuit unit based on a dial circuit of the communication unit and an electrical signal inputted from the switching-circuit unit, A main control unit for generating a warning sound through the speaker when the voltage level is lower than the voltage level; .

In addition, the present invention provides a first amplifying circuit between the monitor circuit unit and the connection control circuit unit for amplifying and outputting a monitored signal transmitted from the monitor circuit unit; And a second amplifier circuit is provided between the connection control circuit part and the speaker for amplifying a signal passed through the connection control circuit part and sending it to the speaker side.

According to the portable line tester according to the present invention, It is possible to test whether there is an abnormality in the line by sending a direct call signal to the direct subscriber of the worker, and to easily carry out other tasks with both hands while talking using the handsfree headset.

According to the portable line testing machine according to the present invention, And each of the circuit parts is simultaneously controlled through the main control unit (CPU), so that the circuit configuration can be made more compact and the manufacturing cost can be reduced.

According to the portable line testing machine according to the present invention, The battery voltage measuring circuit measures the battery voltage in real time and notifies the user of the battery replacement time, thereby maximizing the ease of use.

According to the portable line testing machine according to the present invention, The signal transmitted from the receiving circuit unit and the monitor circuit unit is amplified and output through the amplifying circuit, so that the operator can easily hear the signal through the speaker.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings. (Brief Description of the Drawings) FIG. 2 is a block diagram schematically showing a portable line testing machine according to the present invention.

<Configuration Explanation>

As shown in FIG. 2, the portable line tester according to the present invention includes a switching-circuit unit 100 connected to a line (TIP) line and a ring line of a line and provided with various switches 110, A subscriber-calling circuit unit 200 for outputting a signal to the subscriber's telephone, an insulation resistance measuring circuit unit 300 for measuring the insulation resistance of the line, A monitor circuit unit 600 for monitoring the connection state of the line, a communication unit 700 for communication with the subscriber, and a communication unit 700 for connection with the data line, A circuit protection unit 950 for protecting the internal circuit of the tester from an abnormal voltage and a signal output line of the monitor circuit unit 600 and the incoming circuit unit 500 to a speaker 400) side A battery voltage measuring circuit 920 for measuring the voltage of the battery 921 in real time and a control circuit 920 for controlling the respective circuit parts according to a preset program, And a main control unit 930 for generating a warning sound through the speaker 400.

Such a portable line tester is connected to a line (TIP) line and a ring line of the line through leads (L1) and (L2) while the operator is carrying it, and tests whether the line is abnormal The detailed configuration and functions of the components constituting the line testing machine are as follows.

First, the switching-circuit unit 100 is connected to the TIP line and the RING line of the line through lead lines L1 and L2, respectively, and a hook / monitor switch 110 and the like are provided thereon. Each of the leads L1 and L2 can be electrically connected to the tip (TIP) line and the ring (RING) line of the line through the clip or directly connected. The operating signal of the hook / monitor switch 110 of the switching-circuit unit 100 is transmitted to the main control unit 930 and the driving of the calling circuit unit 500 or the monitor circuit unit 600 is selectively controlled .

The subscriber-calling circuit unit 200 is for calling a subscriber, and includes a subscriber calling switch 210, a subscriber calling circuit (not shown), and a push switch (not shown). Therefore, when the subscriber paging switch 210 is turned ON, the subscriber paging circuit generates a ring signal (paging signal). When the push switch is turned ON, a ring signal (paging signal) is applied to the line.

The insulation resistance measuring circuit unit 300 is for detecting the insulation resistance of a line connected to the switching-circuit unit 100 and conducted through the lead lines L1 and L2, that is, a short circuit, a disconnection, a jig, . To this end, the insulation resistance measuring circuit unit 300 is provided with an insulation resistance measuring circuit (not shown) for measuring the insulation resistance of the line and a measurement display unit 310 for displaying the measured value externally. The measurement display unit 310 may be implemented by an analog meter or a digital meter.

The call-in circuit unit 500 is disposed on the upstream side of the switching-circuit unit 100 to check an output signal when an incoming signal from the exchange is input. The hook-and-monitor switch 110 of the switching- And a receiving circuit (not shown). Accordingly, when the hook / monitor switch 110 is turned on, the main control unit 930 allows the incoming call signal of the exchange to be heard through the speaker 400.

The monitor circuit unit 600 is disposed on the upstream side of the switching-circuit unit 100 and detects a line status of a specific subscriber among many lines of the terminal board. The monitor circuit unit 600 is connected to the hook / monitor switch 100 of the switching- (110) and a monitor circuit (not shown). The line status monitored by the monitor circuit unit 600 is also configured to be output through the speaker 400 as a voice.

The communication unit 700 is provided on the downstream side of the switching-circuit unit 100 and is for communication with the subscriber and includes a communication circuit 710 and a dial 720 associated with the tone-pulse switch 721 and the keypad 722. [ Circuit 720 and a hands-free headset 730 associated with a call circuit 710 for transmission. Thus, when one of the tones or pulses is selected by the tone-pulse switch 721 for communication with the subscriber, the dial circuit 720 dials the selected tone or pulse and the talk circuit 710 and the hands-free headset 730 And is connected to the subscriber. The application of the hands-free headset 730 to the calling unit 700 is for facilitating other tasks while the operator is on the phone.

The data sensing circuit unit 800 is disposed on the upstream side of the switching-circuit unit 100 and intercepts the line with the communication unit 700 to prevent a deterioration in the quality of the data line when the line is connected to a data line, will be. That is, in the embodiment of the present invention, when the lead wires L1 and L2 are connected to the data line, which is an online network, the data sensing circuit unit 800 cuts off the line between the hook / monitor switch 110 and the communication unit 700 (DATA LOCK) circuit that is connected to the bus.

The circuit protection unit 950 is disposed on the upstream side of the switching-circuit unit 100 and protects the internal circuit of the tester from the line-side abnormal voltage. The circuit protection unit 950 is disposed in the lead line L1 connected to the tip (TIP) An overvoltage safety element 952 (circuit surge surge server or circuit protection varistor) disposed between both ends of the overcurrent cut-off switch 951 (or an electronic fuse) and the lead wires L1 and L2.

The connection control circuit portion 900 is connected to the signal output lines of the monitor circuit portion 600 and the receiving circuit portion 500 to connect the signal output lines of the monitor circuit portion 600 or the receiving circuit portion 500 to the speaker 400 side And is driven and controlled by the main control unit 930. [ A first amplifying circuit 610 is provided between the monitor circuit unit 600 and the connection control circuit 900 to amplify and output the monitored signal transmitted from the monitor circuit unit 600, A second amplifying circuit 910 is provided between the speaker 900 and the speaker 400 to amplify a signal passed through the connection control circuit unit 900 and send the amplified signal to the speaker 400 side. The first and second amplifying circuits 610 and 910 amplify the frequency signal and allow the operator to easily listen to the signal.

The battery voltage measuring circuit 920 is for measuring in real time the voltage level of the battery 921 that supplies power to each of the circuit portions, as described above. In the case of a portable line tester to which the present invention is applied, a disposable battery 921 of 9 volts is used for supplying operating voltage (driving power). When a long time tester is used, the voltage level of the battery 921 gradually decreases Can not be performed smoothly. Therefore, the replacement of the battery 921 must be performed periodically. In this embodiment, the replacement time of the battery 921 can be easily known through the battery voltage measurement circuit 920. That is, the battery voltage measuring circuit unit 920 measures the voltage of the battery 921 in real time and inputs it to the main control unit 930. When the input voltage level of the main control unit 930 is lower than the set voltage level, Thereby generating a warning sound. In the embodiment of the present invention, when the voltage level of the battery 921 drops to 8 volts or less, a warning sound is output through the speaker 400 so that the operator can easily know the replacement time of the battery 921. [ Reference numeral 922 denotes a constant voltage unit disposed in a power supply line connecting the battery 921 and the main control unit 930 to supply power to the respective drive circuit units at a constant voltage.

The main control unit 930 is for electrically controlling the driving elements of the respective circuit units. To the input side of the main control unit 930, the dial circuit 720 of the communication unit 700 and the switching-circuit unit 100 are connected. The receiving circuit unit 500, the monitor circuit unit 600, the data sensing circuit unit 800, the connection control circuit unit 900, and the like are connected to the output unit of the main control unit 930. Therefore, the incoming call circuit unit 500, the monitor circuit unit 600, the data detection circuit unit 800, and the connection control circuit unit (not shown) are electrically connected to the dial circuit 720 of the communication unit 700 and the switching circuit unit 100, 900 are controlled. Also, as described above, the main control unit 930 is programmed to output a warning sound through the speaker 400 when the voltage level input from the battery voltage measurement circuit 920 is lower than the set voltage level.

<Operation and effect explanation>

Next, the operation of the portable line tester according to the present invention constructed as described above, and the operation and effect thereof will be described.

First, the call reception function of the portable line tester will be described. When an operator turns on the hook / monitor switch 110, an incoming signal is received by the hook / monitor switch 110 and the control of the main control unit 930 And is inputted to the receiving circuit unit 500 side by driving. In the call receiving circuit unit 500 receiving the incoming call signal, the incoming call signal is converted to a frequency at which the incoming call signal can be heard by the person and outputted through the speaker 400. That is, the frequency signal outputted from the receiving circuit unit 500 is outputted through the speaker 400 while being amplified through the second amplifying circuit 910 via the connection control circuit unit 900.

The monitor function of the portable line tester is to find out a specific subscriber line among many terminals of the terminal board or the wiring box and to listen to the line status of the subscriber line. The operator connects each end of the lead wires L1 and L2 to the terminals, 110 are turned on, a line connected to the lead wires L1, L2 is connected to the monitor circuit unit 600. [ The talk tones output from the monitor circuit unit 600 are first amplified through the first amplifying circuit 610 and subsequently amplified by the second amplifying circuit 910 through the connection control circuit unit 900 And output through the speaker 400. Therefore, the operator can monitor the line condition without interfering with the subscriber's call.

The calling function of the portable line tester directly calls the subscriber. When the operator presses the subscriber paging switch 210, the subscriber-paging circuit unit 200 generates a ring signal for calling the subscriber. Therefore, when the operator connects the lead line L1 (L2) to a specific subscriber line and turns on the subscriber paging switch 210, the communication circuit 710 operates. At this time, when the operator turns on a call switch (not shown, a push switch) of the switching-circuit unit 100, the ring signal is applied to the ring circuit of the subscriber-side telephone through the leads L1 (L2) And the operator can make a direct call with the subscriber through the handsfree headset 730.

In addition, the insulation resistance measurement function of the portable line tester is for detecting an abnormal state of the line, that is, a short-circuit, a disconnection, a paper jam, etc. The magnitude of the insulation resistance according to the state of the line is measured through the insulation resistance measurement circuit unit 300 , And the measurement value is displayed through the measurement display unit 310 and can be visually confirmed.

The battery voltage measuring circuit 920 measures the voltage of the battery 921 in real time and inputs the measured voltage to the main controller 930. The battery voltage measuring circuit 920 measures the voltage of the battery 921 in real time. When the voltage of the battery 921 is lower than the set voltage level (8 volts), the main control unit 930 outputs a warning sound through the speaker 400 so that the operator can easily know the battery replacement timing.

1 is a block diagram schematically showing an electrical configuration of a conventional pocket-type line testing machine.

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

Description of the Related Art [0002]

L1, L2 .. Lead wire 100 .. Switching-

200 .. Subscriber calling circuit section 300 .. Insulation resistance measuring circuit section

400 .. Speaker 500 .. Incoming circuit

600 .. Monitor circuit section 700 .. Call section

800. Data sensing circuit unit 900. Connection control circuit unit

920 .. Battery voltage measuring circuit 930. Main control unit

950 .. Circuit Protection

Claims (2)

1. A portable line tester for connecting a line (TIP) line and a line (RING) line of a line to test whether there is an abnormality in the line while transmitting and receiving to and from a telephone station or a subscriber; The portable line tester includes: A switching-circuit unit 100 connected to the tip line and the ring line of the line via lead lines L1 and L2, respectively, and having a hook / monitor switch 110; A subscriber-paging circuit unit 200 connected to the switching-circuit unit 100 and outputting a ring signal by operation of the subscriber paging switch 210 to the telephone of the subscriber; An insulation resistance measuring circuit unit 300 connected to the switching-circuit unit 100 and measuring the insulation resistance of the line connected through the lead lines L1 and L2 and having a measurement display unit 310 for displaying a measured value to the outside )Wow; An incoming circuit unit 500 disposed on the upstream side of the switching-circuit unit 100 for informing the reception state of the line through a speaker 400; A monitor circuit unit 600 disposed on an upstream side of the switching-circuit unit 100 for monitoring a connection state of the line and outputting voice through the speaker 400; A dial circuit 720 provided on the downstream side of the switching-circuit unit 100 and associated with the tone-pulse switch 721 and the keypad 722, a communication circuit 710 for communication with the subscriber, A communication unit 700 having a hands-free headset 730 associated with a communication circuit 710; A data sensing circuit unit 800 connected to an upstream side of the switching-circuit unit 100 and interrupting a line with the communication unit 700 when the line is connected to a data line, which is an online network; A circuit protection unit 950 having an overcurrent cut-off switch 951 and an overvoltage safety element 952 disposed on the upstream side of the switching-circuit unit 100 for protecting the internal circuit of the portable line tester from the line- )Wow; For selectively connecting the signal output lines of the monitor circuit unit 600 or the incoming circuit unit 500 to the speaker 400 by being connected to the signal output lines of the monitor circuit unit 600 and the incoming circuit unit 500, A connection control circuit unit 900; A battery voltage measuring circuit 920 for measuring the voltage of the battery 921 that supplies power to each of the circuit units in real time; The monitoring circuit unit 600, the data sensing circuit unit 800, the data input / output unit 800, and the switching circuit unit 100 are electrically connected to each other by an electrical signal input from the dial circuit 720 of the communication unit 700 and the switching circuit unit 100, A main control unit 930 for controlling the connection control circuit unit 900 and generating a warning sound through the speaker 400 when the voltage level input from the battery voltage measurement circuit 920 is lower than a set voltage level; Wherein the first and second tangential lines are parallel to each other. The method according to claim 1, A first amplification circuit 610 is provided between the monitor circuit unit 600 and the connection control circuit unit 900 to amplify and output the monitored signal transmitted from the monitor circuit unit 600; A second amplifier circuit 910 is provided between the connection control circuit unit 900 and the speaker 400 to amplify a signal passed through the connection control circuit unit 900 and send the signal to the speaker 400 side. Portable line tester.

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