CN2178022Y - Intelligent computer telephone testing table - Google Patents

Abstract

The utility model provides an intelligent computer telephone testing table. The utility model relates to a new telephone testing device which is used for the local telephone exchanges and the telephone private branch exchanges of various system types. The utility model comprises a microcomputer, a receiving conversion circuit, a detection circuit, a digital display circuit, a ringing circuit, a reception circuit, etc. The interface circuit of the microcomputer is connected with the associated circuits, and the work of the program software is utilized; so the line parameters and the operating state of the local telephone and the telephone private branch exchange (including telephone) can be detected, and the detecting results are displayed in digital form. The utility model has the advantages of advanced technology, complete function, high testing precision, obstacle class judgment, signal display, etc.

Description

Intelligent computer telephone testing table

Intelligent computerized telephone test desk described in the utility model is a kind of novel phone measuring instrument that is used for various standard local telephone switching systems and phone Private Branch Exchange PBX.

At present, the prior art of domestic local telephone test desk has two kinds: a kind of electromagnetic type resistance voltage table that is old-fashioned by relay control, its certainty of measurement is low, speed is slow, volume is big and heavy, function is few (double-tone frequently and some parameter lacunas of pulse) and loop resitance can not directly detect, the input resistance line status of phone detects is forbidden.Another kind is the SPC telephone exchange measurement mechanism, and measuring system can only allow to measure a user with less than 500 or greater than 500 expressions, it is inaccurate that line status detects at every turn.For swinging cross, get machine, obstruction etc. and be difficult for difference, phone dialer parameter can not detect, this brings difficulty for the accuracy that the surveyor differentiates obstacle.At existing problem in the above-mentioned prior art, design a kind of intelligent computerized telephone test desk of advanced technology, be very necessary thereby overcome existing problem.

In view of the problem of being deposited in the above-mentioned prior art, but the purpose of this utility model be a kind of rational in infrastructure, advanced technology of design, multiple functional, accuracy of detection is high, speed is fast, disturbance in judgement classification and show the intelligent computerized telephone test desk of various signals also.The utility model adopts the novel all-electronin checkout gear of single-chip microcomputer microcomputer integrated circuit and system program software be combined into.Be portability, can be used as fixed checkout gear again, can detect phone parameter, line parameter circuit value and state, User Status, exchange interface electric parameter and state, output is the result all show with digital form.So the utility model is a kind of Practical Intelligent computer telephone test desk that is suitable for.

Intelligent computerized telephone test desk described in the utility model, its structure by microcomputer DND, double-tone reception of impulse frequently change-over circuit SHM, parameter detecting lattice network CSH, digital display circuit XSD, ring howler circuit ZHL, accept circuit SHL, function key GNJ and formed; Ring howler circuit ZHL is connected with distributing frame PXJ with function key GNJ.Cooperate with each related hardware circuit by the program software that is stored among the microcomputer DND, to local telephone and phone Private Branch Exchange PBX circuit and operating state detection thereof, its testing result shows with digital form.Double-tone described in the utility model reception of impulse frequently change-over circuit SHM is by function key GNJ control, and the interface circuit of function key GNJ is connected with microcomputer CPU.The double-audio signal transducer is connected with the interface that central authorities handle CPU by coupling with the dc pulse signal transducer.The shows signal interface circuit of CPU is connected with display circuit charactron LED by the output interface of two-way conversion follower.Whole device receives double-audio signal and the dc pulse signal that the user sends, and then converts digital signal to and be transported to CPU and handle.Parameter detecting lattice network described in the utility model is made up of analog signal converter, digital signal amplifier, passive network signal distributor, digital display device and buffer.Be connected with microcomputer by cpu bus, different voltages, the resistance parameter of outside line and office line detected, and analog signal conversion is become digital signal, amplify and deliver to CPU and handle.

The utility model provides a kind of advanced person's local telephone checkout gear, and its characteristics have more than 30 kind of measuring ability, detects data and shows that by the LED charactron each measuring ability is as follows:

1. to the wireline inspection function:

(1) loop resistance, swinging cross, broken string, normal, line-to-line insulation resistance, two lines are to ground resistance and status detection thereof.

(2) the input resistance value when program-controlled telephone off-hook, on-hook.

(3) general phone pluck, the input resistance value during on-hook.

(4) by (2), (3) detection, can judge and determine that line status is swinging cross, broken string, off hook state and conducting situation thereof.

(5) by (2), (3) two can detect the loop resitance value.

(6) a, the arbitrary line of b two lines mix mutually with its line, its polarity of voltage and size detection, and whether can judge and the subscribers feeder of conversing swinging cross mutually.

(7) detect swinging cross, to forget on-hook still be that the user gets clogged.

2. the detection of dialogue machine

(1) to the detection of double-audio signal, display performance has dialed digit, symbol " ※ ", " # " and the three-figure low frequency value of corresponding numeral and the high frequency value of four figures.

(2) DC pulse is detected the number of Presentation Function, pulse, the disconnected ratio that continues, speed, cycle, break time, continuous time.

(3) detection accepted of ringing-current is shown by signal lamp.

(4) qualitative detection give, the receiver conduction status.

3. distributing frame is to the measuring ability of switch side.

(1) to distributing frame to broken string, the swinging cross of exchanger side, be contacted with good state-detection and feed voltage value thereof.

(2) monitor dialing tone, busy tone, beeping sound or tone-off state.

4. the tested user of bell call also converses mutually and urges the extension function.

5. can be by the arbitrary user of inboard dial-up.

6. there is the 1-3 road to accept circuit, an interconnection.

7. can use resistance detection to line status, the voltage available method detects again.

8. line resistance, magnitude of voltage parameter are big or little, and the detection that the dynamic digital parameter of phone is big or little shows and settles at one go, need not manually change.

9. there is self check to check function to R, V and multifrequency pulse performance parameters.

In sum as can be known, the utility model is a kind of advanced person's a local telephone checkout gear, and this equipment adopts microcomputer computer, large scale integrated circuit and LED numeral to show the little test desk of number all-electronin phone.The utlity model has the accuracy of detection height, speed is fast, volume is little, in light weight, characteristics such as function is many, little power consumption, easy to operate, intuitive display, can be adapted to various standard dial exchanges and private branch exchange unit and use.Application of the present utility model will obtain positive social benefit and remarkable economic efficiency.

The utility model has three accompanying drawings wherein:

Accompanying drawing 1 is intelligent computerized telephone test desk structural representation.

Accompanying drawing 2 is intelligent computerized telephone test desk fundamental diagrams.

Accompanying drawing 3 is parameter detecting lattice network structural representations in the accompanying drawing 1.

Among the figure: the XSD-digital display circuit

The DND-microcomputer

The GNJ-function key

SHJ-accepts circuit

CSH-parameter detecting lattice network

SHM-double-tone reception of impulse frequently change-over circuit

ZHL-ring howler circuit

The PXJ-distributing frame

The JHJ-switch

The XL-circuit

The DHJ-telephone set

WYWL-passive detection network

Specific embodiment of the utility model is equipped with 7 circuit boards and transformer as shown in drawings in rectangular casing.On panel, have 10 operation telegraph keys and six rectangle knobs, be connected to the binding post that is connected with the outside in the back on the plate.Circuit distribution situation on each circuit board: circuit board 1 is a computer, and double-tone frequency and pulse parameter receive change-over circuit.Circuit board 2 is the parameter detecting circuit.Circuit board 3 is a digital display circuit.Circuit board 4 is for accepting circuit.Circuit board 5 is ringing-current control howler circuit.Circuit board 6 is surveyor's feed circuit of conversing.Circuit board 7 is system's power supply board circuit.10 bidirectional operation keys and 6 buttons are housed on the plate in front, are coupled to each other according to the difference of function and form.Operation principle of the present utility model is can realize detecting control to difference in functionality by function key GNJ, receives substation signal or line parameter circuit value by them, i.e. double-tone frequency, pulse signal and circuit, the voltage of drop side, resistance parameter.Receive change-over circuit SHM, the CSH reception of line parameter circuit value detection lattice network and convert digital signal to by double-tone frequency, pulse parameter respectively, send CPU element again to, analyze processed, and testing result is delivered on the display, with the form demonstration of numeral.The effect of each element circuit is as follows:

1. the various difference in functionalitys of function key (GNJ)-test desk are separated control detection by each function key.

2. the dynamic parameter of double-tone frequency phone and dc pulse signal is controlled, analyzes, processes, handled to computer unit (DND)-microcomputer under the support of systems soft ware; And line parameter circuit value, and a result who detects is transported to display unit shows.

3. double-tone reception of impulse change-over circuit (SHM)-the reception user sends frequently double-audio signal and dc pulse signal converts digital signal again to and is transported to the CPU processing.

4. parameter detecting lattice network (CSH)-different voltages, the resistance parameter of outside line drop side detected, and become analog signal conversion digital signal to give CPU processed.

5. digital display circuit (the XSD)-result who detects is carried out numeral demonstration by digital display device.

6. accept circuit (SHL)-reception subscriber complaint, and converse with the surveyor.

7. ring howler circuit (ZHL)-bell call user; The user forgets on-hook and send a special sound to urge extension.

The block diagram of accompanying drawing 1 is made up of two parts: a part is made up of teleset line distributing frame (PXJ) and telephone exchange (JHJ).Make user's switch of each subsets (DHJ) and telephone exchange all pass through distributing frame (PXJ) and link one by one.Another part is the computer test desk, its structure is made up of seven parts, comprises accepting circuit (SHL), function key (GNJ), parameter detecting lattice network (CSH), double-frequency pulse reception change-over circuit (SHM), ring howler circuit (ZHL), microcomputer (DND) and digital display circuit (XSD).

Accompanying drawing 2 is made up of three parts in the accompanying drawing 1, i.e. function key (GNJ), microcomputer (DND) and digital display circuit (XSD).When the dynamic parameter of two audio digital signals that will detect subsets (DHJ) or pulse digital signal, double-contact plug AX and BX are inserted in the distributing frame consent.When the key group J3 in the function key (GNJ) and J4 remove downward side direction, if when the subscriber dialing double-tone, signal is that double-tone frequency reception of impulse change-over circuit (SHM) is delivered in the integrated circuit block 8870 by optocoupler reception, change-over circuit, double-audio signal is translated into the tetrad sign indicating number, and transfers and give microcomputer (DND) promptly on 8031 the P0 mouth.If during pulse digital signal, deliver to by the double-tone effect of reception of impulse change-over circuit (SHM) frequently on 8031 the P1.0 mouth, analysis, processed through 8031 central processor CPUs, the result is given on the charactron LED1-7 of digital display circuit (XSD) by data/address bus, a signal on the 74LS273 is added on the anode of display led; Then whenever press the primary parameter conversion key, charactron just shows a kind of parameter value.Program storage 2764 in the accompanying drawing 2 can be deposited program and form, and 74LS373 is an address latch, receives the double-tones double-audio signal of phones frequently by integrated circuit block 8870, and converts digital signal to and give CPU.And conversion is transported to the CPU processing.Under the support of software, central processing unit 8031 commander control detection system works, and to the signal that detects analyze, processed.The program software of system is stored in the integrated circuit block in 2764.Form one 7 led display unit by two integrated circuit block 74LS273 and charactron LED1-7.Function key (GNJ) is made up of 10 buttons, can finish the hard wired logic function control of various functions.

Accompanying drawing 3 is independent parameter detecting circuit, in consent on the coil holder of interface double-contact plug AX, BX insertion switch (JHJ), again J3 in the function key (GNJ) and J4 key is removed upwards side direction.Power supply is delivered on the substation through distributing frame by passive detection network (WYWL), can detect two line signal code sizes, can judge, show the different parameters value of the resistance obstacle of swinging cross, broken string, wire insulation resistance or loop resistance, off-hook and on-hook.Analog electrical signal on passive resistance network sends MC14433 to and carries out the analog and digital signal conversion.By 74LS04 and optocoupler LED1-11, deliver on the data/address bus of computer 8031 on the P0.0-P0.7 mouth through 74LS245 again, through CPU processing calculation process, its result shows on display led 1-7.When the result who detects was greater than or less than setting, the feedback signal that CPU sends into changed different parameters through CD4052 automatically.In like manner also the size of voltage available parameter is represented the quality of circuit and phone.Accompanying drawing 3 is each device effect and operation principle of parameter detecting lattice network: passive detection network (WYWL) can distribute outside line AX line, the actual measurement voltage of BX line, resistance value by passive network.Become the analog signal conversion of circuit digital signal promptly to realize the A/D conversion by integrated circuit block MC14433.By integrated circuit block 74LS04, LED1-8,74LS245 effect, the digital signal of MC14433 output through amplifying, isolating, is transferred to CPU by 74LS245 again and handles.Constitute the automatic detection loop of closed loop by another digital amplifier 74LS04 and LED1-8.

Claims (3)

1, a kind of intelligent computerized telephone test desk is characterized in that by microcomputer DND, double-tone reception of impulse frequently change-over circuit SHM, parameter detecting lattice network CSH, digital display circuit XSD, ring howler circuit ZHL, accepts circuit SHL, function key GNJ and formed; Ring howler circuit ZHL is connected with distributing frame PXJ with function key GNJ; Cooperate with each related hardware circuit by the program software that is stored among the microcomputer DND, to local telephone and phone Private Branch Exchange PBX line parameter circuit value and operating state detection thereof, its testing result shows with digital form.

2, intelligent computerized telephone test desk according to claim 1 is characterized in that double-tone reception of impulse frequently change-over circuit SHM by function key GNJ control, and the interface circuit of function key GNJ is connected with microcomputer CPU; The double-audio signal transducer is connected with the interface of central processor CPU by coupling with the dc pulse signal transducer; The shows signal interface circuit of CPU is connected with display circuit charactron LED by the output interface of two-way conversion follower; Whole device receives double-audio signal and the dc pulse signal that the user sends, and then converts digital signal to and be transported to CPU and handle.

3, intelligent computerized telephone test desk according to claim 1 is characterized in that the parameter detecting lattice network is made up of analog converter, digital amplifier, passive network signal distributor, digital display device and buffer; Be connected with microcomputer by cpu bus; Different voltages, the resistance parameter of outside line and office line are detected, and analog signal conversion is become digital signal, amplify and deliver to the CPU processing.

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