KR19990026762U - Portable track testing machine - Google Patents

Abstract

The present invention is directed to a portable line tester that is suitable for the installation, transfer and troubleshooting of telephones anywhere without relying on the telephone station laboratory.

The object of the present invention is to prevent the hearing loss of the tester when using the portable track tester, and to provide promptness and accuracy of work by voice notification that the core of the track is collated.

The present invention for achieving the above object is to charge a DC power applied to the power jack to the battery, and to charge the battery to the battery power detection and recharge warning unit and the stabilized power supply IC of the megohm supply voltage generation unit Power supply part Secondary part of call transformer by alternately conducting the signal generated by tone signal generator and timer IC which generates square field periodically oscillated by NAND gate, transistor and fill transformer to conduct to transistor and transistor. Headset receiver, microphone, at the output terminal of the ring receiver that activates the buzzer by applying the ring signal from the trunk line jack to the ring IC and the telephone function circuit in the test and control panel. Speaker, microphone operation and headset operation Portable line characterized in that the core control function is composed of voice IC, pulse trans and line jack which are operated by receiving power from constant voltage IC in the main body of tester including call holding part connected to hold switch in test and operation panel. It is a testing machine.

Description

Portable track testing machine

The present invention relates to a portable line tester, and in particular, the present invention is intended to be suitable for the installation, relocation and troubleshooting of the phone anywhere without relying on the telephone station laboratory, and to prevent the hearing loss of the tester and to make it easy to use. .

Conventional portable line tester is operated by rectified and smoothed circuit part and rectified signal for supplying DC voltage without hum or noise of power to telephone line as described in Korean Utility Model Publication No. 1627 (Notification No. 92-5044). Intermittent signal generator for generating an intermittent signal, a bell signal generator for generating a bell signal of the telephone, a measurement signal generation and tone ringer circuit for generating a signal indicating the state of the telephone line, and A test jack for plugging in a receiver and a receiver, a test jack for plugging in a test cord connected to a subscriber's telephone line, and an internal and external test cord for plugging in an extension and an external tester. Code jacks for internal and external tests, dial circuits that provide dial signals to enable communication with internal and external testers, and the internal and external tests described above. An incoming / outgoing switch and a test / call switch that operate when a caller is called, an extension and an external test switch that is activated during a call with the tester and the internal and external testers, and an intermittent signal is generated when the subscriber's telephone and the handset are left unattended. A line transformer and tone transmitting switch for transmitting the interruption signal generated by the subscriber to the subscriber's telephone, a line transformer and a call switch for transmitting the bell signal to the subscriber's telephone by the bell signal generator when the subscriber calls; It consists of a control unit with a response switch for making a call with the subscriber when the subscriber calls.

The conventional portable line tester configured as described above constitutes a circuit that performs a mega-ohm test by boosting a DC voltage, but uses a zener diode to maintain a constant voltage. Therefore, due to the error of the zener diode, a stable constant voltage cannot be obtained. Since the external test switch is used, the test cannot be conducted efficiently due to noise generated during the test, and because the CO line and test terminals are different, it is inconvenient to use the test. It is pointed out that it is difficult to compose the combination as well as cause deafness due to the use of stars.

In addition, since the voltage applied to the test stage is more than 220V when measuring the megohm, the conventional portable line tester may cause a great damage to the telephone caller and the tester, and when the high voltage is applied, the arrester operates to protect the circuit from falling. Problems that cause disconnection and defects that cannot be used in places where power is not available and which are not available in manholes or poles are pointed out.

The present invention was devised to solve the problems of the conventional portable line tester described above, and by using portable AC and DC power at the same time, so that the tester can be used even where there is no power source such as a manhole or a pole lamp, and a speakerphone By adding the function, it is possible to configure the haptic line and use the phone without the headset, as well as to make a four-way call and conference, and add the voice control function of the phone function to prevent the hearing loss by using light headphones. It aims to make it possible to conduct a line test during a line test during a line test during a line test and to easily check the core when a new line is opened.

The present invention for achieving the above object is to charge the DC power applied to the power jack to the battery, and to apply the charged DC power to the battery power detection and recharge warning unit and the stabilized power supply IC of the megohm supply voltage generation unit A battery power supply unit; When the power is supplied from the stabilized power supply IC, oscillation is performed by the resistor and capacitor of the NAND gate input terminal, and the oscillation is performed again by the capacitor of the NAND gate output terminal. A tone signal generator for generating a tone signal on the secondary side of the transformer; When the call switch in the test and operation panel is pressed, the oscillation frequency is generated by the timer IC, and this signal is applied to the transistor so that it alternately conducts, so that the AC voltage generated on the secondary side of the call transformer is transmitted to the call signal through the test jack. A call signal generator; The timer generates an oscillation when the mega-ohm switch is turned on, and this oscillated signal is applied to the fill transformer to generate an AC voltage on the secondary side, and the generated AC voltage is rectified by a smoothing circuit composed of a diode, a capacitor, and an inductor. A megohm voltage generator; A ring receiver for driving a buzzer by applying a ring signal from a trunk line jack to a ring IC; A tone switch and a call switch, a call button switch, a mechanical capacity switch, a leakage current check switch connected to a connector connected to the output signal of the tone signal generator and the call signal generator, a call hold switch, A test and operation panel comprising a trunk line jack to be connected, a call button switch, an incoming / outgoing switch and a test call switch, a rudder wire jack to connect a telephone function circuit unit, a kilo-ohm switch, a bolt switch, and a metawa; A speaker, a microphone operation unit, and a headset operation unit configured to connect a headset receiver, a microphone, and a speaker to each output terminal of the telephone function circuit unit of the test and test panel; A call holding unit for causing the melody to ring by the call holding switch; It consists of a core control function consisting of a voice IC, a pulse transformer, and a line jack, which are operated by receiving power from a constant voltage IC.

The present invention has a battery power supply unit, so that it is easy to perform line tests in a manhole without a power source, and the speaker, microphone operation, and headset operation unit are provided in the telephone function circuit of the test and operation panel to achieve a short circuit configuration without a headset. Of course, it is possible to talk between four parties, and by adding the voice control function of the phone function, it is possible to prevent the hearing loss occupation of the tester that occurs during the test, and by the configuration of the call holding unit can perform a line test even during a call, When the new track is opened by the fresh control function, the core control work can be performed by the melody so that the work can be easily performed.

1 is a schematic diagram of the overall circuit of the present invention

2 is a detailed circuit diagram of a telephone function circuit unit according to the present invention;

* Explanation of symbols for main parts of the drawings

10: battery power supply unit 20: battery power detection and recharge warning unit

30: tone signal generator 40: call signal generator

50: megohm supply voltage generator 60: ring receiver

70: test and control panel 80: speaker, microphone operation and headset operation

90: call holding unit 100: core control function

1 is an overall circuit diagram of the present invention.

10 is a battery power supply unit, and charges the DC power applied to the power jack 11 to the storage battery 12, and the charged DC power is the battery power detection and recharge warning unit 20 and the megohm supply voltage generator ( 50 is applied to the stabilized power supply IC 51.

Receiving the power supplied from the stabilizing power supply IC (51) perform a NAND gate (N, ~ N ₄₎ and the oscillation in accordance with the resistance and the capacitor of the input and output terminals of the NAND gate (N _2), and a NAND gate (N ₄₎ output terminal The oscillation is performed by a condenser of the tones so that a periodically oscillated spherical field is applied to the base of the transistor Q ₁ so as to be conducted, thereby causing a tone signal to be generated on the secondary side of the fill transformer T ₁ . When the signal generator 30 and the call switch SW _{1 in the} test and control panel 70 are pressed, an oscillation frequency is generated by the timer IC 41 and the signals are generated by the transistors Q ₂ -Q ₃ and Q. _4- A ₆ ) is applied to the connection (P ₁ ) (P ₂ ) of the output terminal of each of the call signal generator 40 to generate an AC voltage on the secondary side of the fill transformer (T ₂ ) by alternating conduction. Connected to the test jack 71 connected to the subscriber .

Then, the timer IC 53 oscillates in response to the ON of the mega-ohm switch 52, and the oscillated signal is applied to the fill transformer T ₃ to generate an AC voltage on the secondary side. The voltage is rectified by a smoothing circuit composed of a diode, a capacitor, and an inductor to configure a megohm supply voltage generator 50.

The ring receiver 60 is configured to apply a ring signal from the trunk line jack 72 to the ring IC 61 to operate the buzzer 62. In the above, the frequency announced through the buzzer 62 is generated by adjusting the frequency most suitable for the audible frequency.

In addition, the test and operation panel 70 is a tone switch (SW) connected to the test jack 71 to the connector (P ₁ ) (P ₂ ) connected to the output terminal of the tone signal generator 30 and the call signal generator 40 ₂ ) and call switch (SW ₁ ), call button switch (SW ₃ ), mechanical capacity switch (SW ₄ ), leakage current check switch (SW ₅ ) and the connector (P ₂ ) and call hold switch (SW ₆ ) Other short-circuit jack (P ₄ ) for connecting the trunk line jack 72, the call button switch (SW ₃ ), the incoming / outgoing switch (SW ₇ ), the test call switch (SW ₈ ), and the telephone function circuit unit 70-1 to be connected to each other. ), P ₅ , kilo-ohm switch (SW ₉ ), bolt switch (SW ₁₀ ), and meta (73). In the above, the output terminal of the telephone function circuit unit 70-1 connects the headset receiver 81, the microphone 82, the speaker 83 is connected to the speaker, the microphone operation and the headset operation unit 80.

In addition, the call hold switch (SW ₆₎ to the call on hold portion 90 that to sound the melody IC (91) by the operation associated with a call on hold switch (SW ₆₎ even if a call after the call on hold line test To be able to perform

In addition, the present invention is a core wire control consisting of a Venus IC (102-105), a fill transformer (T ₄ -T ₈ ), a line jack 106 to operate by receiving power from the constant voltage IC (101) inside the line tester of the present invention The functional unit 100 was installed so that tests such as wiring state and disconnection state of the new line connected to the line jack 106 can be sequentially compared.

In addition, the telephone function circuit unit 70-1 in the test and control panel 70 includes a dial IC 75 in which a button unit 74 is attached to a trunk line jack 72, as shown in FIG. Amplification IC 77 for amplifying the output signal of the 76 is configured to connect to the speaker, the microphone operation and the headset operation unit 80.

In the figure, G is an earth terminal.

The present invention having such a configuration charges the DC power applied to the power jack 11 to the storage battery 12, and the DC power charged to the storage battery 12 passes through a power switch to form a noise filter composed of a capacitor and an inductor. Filtered through, this power supply (12V) is applied to the stabilized power supply IC 51, thereby supplying a stabilized power to each part of the circuit.

In such a state, the subscriber line is connected to the test jack 71, the trunk line is connected to the trunk line jack 72, and if necessary, a new line is connected to the other line jack (P ₄ ) (P ₅ ). Press 52 or the kilo-ohm switch (SW ₉ ), the volt switch (SW ₁₀ ), etc., the DC voltage or loop resistance of the line is displayed on the meta (73) to check whether the subscriber telephone is connected.

When the tone switch SW ₂ is pressed while the test preparation is performed in this way, stable power is supplied from the stabilized power supply IC 51 to the tone signal generator 30 and input to the NAND gate N ₁ (N ₂ ). Therefore, oscillation is performed by a resistor and a capacitor connected to the NAND gate N ₂ (for example, 2.5 HZ), and oscillation is continuously performed (eg, 555 HZ) by a resistor and a capacitor connected to the NAND gate N ₄ . That is, a signal of 555HZ is generated every 2.5HZ and applied to the base of the transistor Q _1. Accordingly, the pulse transformer T ₁ is operated to generate a tone signal on the difference side thereof, which is connected to the connector P _1. )-(P ₂ ) Test jack 71 is to be sent to the subscriber side. Therefore, the subscriber phone is forcibly pressed.

When the call switch SW ₁ is pressed to call a subscriber, a stabilized power source generates a random frequency 20HZ by the timer I 41 of the call signal generator 40 and a capacitor and a resistor connected thereto. Since the signal is alternately applied to transistors Q ₂ and Q ₃ and Q ₄ and Q ₅ to operate the call transformer T ₂ , the AC voltage induced on the secondary side of the call transformer T ₂ is reduced. The test jack 71 is transmitted to the subscriber phone as a call signal.

On the other hand, the ring signal coming from the trunk line jack 72 is supplied to the ring IC 61 and the capacitor and resistor connected thereto operate the buzzer 62 by adjusting the frequency most suitable for the audible frequency.

However, the present invention can be used to select the electronic / mechanical function by the Phils / tone switch connected to the telephone line through the trunk line jack 72 and connected to the dial IC 75 of the telephone function circuit unit 70-1. When the dial signal is input from the dial IC 75 to the voice IC 76, the dial signal is controlled by the input signal of the condenser microphone and the external voice signal, and the output signal is amplified by the amplification IC 77. Then, the speaker, microphone operation, and the headset receiver 81, the microphone 82, and the speaker 83 of the headset operation unit 80 are selected and supplied. Therefore, the present invention can perform a line test using a microphone (82) or a speaker (83) instead of using a conventional heavy carbon micro presta, it is possible to test without a headset, it is possible to prevent hearing loss occupation In addition, the speakerphone feature will enable four-way calls and conferences.

In addition, during the test, that is, pressing the hold switch (SW ₆ ) during the call with the outside in the CO line jack 72, the melody is sent to the external caller through the CO line jack 72 to prepare for noise and noise generated during the test. It is possible to improve service to large customers.

Particularly, the present invention has a line management function 100 that informs the core line of the dormant line by voice in order to identify a new line. When the line is connected to the line jack 106 to check a new line state, The voice number corresponding to the line is generated and transmitted by the voice ICs 102-105 and the fill transformers T ₄ -T ₈ . Therefore, it is possible to accurately match the track condition so that the track is not inverted due to the damage or inundation, so that it is possible to prevent the restocking and to quickly and smoothly open the new track.

As described above, the present invention is portable and can be used for both AC and DC, and can be used in places such as a manhole without power by using an internal battery. Also has the possible convenience.

In addition, the present invention has a built-in phone function, which allows the user to send out the last used phone number again and performs voice control of the phone function so that light headphones can be used to prevent hearing loss. The line test can be performed during a call, and it is designed to provide promptness and convenience of work by directly telling the distinction of the line by voice.

Claims (2)

The DC power applied to the power jack 11 is charged in the storage battery 12, and the charged DC power is supplied to the stabilized power supply IC of the battery power detection and recharge warning unit 20 and the megohm supply voltage generation unit 50 ( 51) an applied battery power supply unit 10; A tone signal generator 30 for generating a spherical field periodically oscillated by the NAND gates N ₁ to N ₄ , the transistor Q ₁ , and the fill transformer T ₁ ; By applying the signals generated by the timer IC 41 to the transistors Q ₂ -Q ₃ and Q ₄ -Q ₅ , they alternately conduct the call alternating current voltage to the secondary side of the call transformer T ₂ . A call signal generator 40 to be generated; A ring receiver 60 applied to the ring signal ring IC 61 coming from the trunk line jack 72 to operate the buzzer 62; A speaker, a microphone operation, and a headset operation unit 80 configured by connecting a headset receiver 81, a microphone 82, a speaker 83 to an output terminal of the telephone function circuit unit 70-1 in the test and operation panel 70; A voice holding unit 90 connected to the holding switch SW _{6 in} the test and control panel 70; and a voice IC 102-105 operated by receiving power from the constant voltage IC 101 in the tester main body including the call holding unit 90; And a pulse transformer (T ₄ -T ₈ ) and a line jack control unit (100) composed of a line jack (106). The method of claim 1, The telephone function circuit unit 70-1 includes a dial IC 75 having a button 74 attached to a trunk line jack 72, and an amplification IC 77 for amplifying the output signal of the voice IC 76. Portable line tester, characterized in that configured to connect to the speaker, the microphone operation and the headset operation unit (80).