CN1866042A - Testing circuit of multifunctional cable tester - Google Patents
Testing circuit of multifunctional cable tester Download PDFInfo
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- CN1866042A CN1866042A CN 200610052082 CN200610052082A CN1866042A CN 1866042 A CN1866042 A CN 1866042A CN 200610052082 CN200610052082 CN 200610052082 CN 200610052082 A CN200610052082 A CN 200610052082A CN 1866042 A CN1866042 A CN 1866042A
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Abstract
The disclosed testing circuit for a multifunction cable meter comprises: in meter shell, an output/input circuit every with testing port and connected to a MPU, and a power. Wherein, the MPU connects to a frequency output control circuit with 1 KHz and 440 Hz for switch selection, a display circuit and the power, the CPU comprises a 12MHz center oscillator and a main control chip as the heart for whole center; the LED is used to display information. This invention has high stability and accuracy.
Description
Technical field
The present invention relates to test special mechanical equipment, particularly a kind of by little test circuit of handling the multifunctional cable tester of CPU control.It has easy to use, the power saving safety of test, functional characteristics of fine quality, can accurately test the short circuit of the short circuit of multiple cable sub-thread and open circuit and multiply and cut-offs.
Background technology
Complicated along with the variation of cable and interface, cable fine or not uncertain, error in judgement when often making the engineering staff keep in repair and install and make the mistake and change chip and cable, sometimes in long distance communication, allow engineering staff's workload strengthen and increase the difficulty of maintenance, but do not know from that assistant because of cable goes wrong; , will realize if can not promptly and accurately judge these failure problems by adopting the solution of changing parts and changing cable.Cause the unnecessary spending of economic loss and manpower therefrom.
The quality of various professional cables.Cable inferior is a key factor that causes various on-the-spot demonstrations not normal.Utility model patent as application number 93224007 has disclosed " digital tester ", and it is made of a signaling device and a receipts sign indicating number device, a road of signaling device clock source connects preset conuter, another road connects binary counter through frequency divider, a road of this binary counter connects AND circuit through preset conuter, not gate, and another road connects AND circuit through code translator.Trigger and the decade counter of receiving the sign indicating number device join, and this counter one tunnel connects display through decoder driver, and another road connects display through counter; Receive sign indicating number device clock source and connect decade counter, reset clock connects counter, decade counter and trigger respectively.But can't accomplish to be with little processing CPU control, complex structure, it is big to detect error, adjusts anglec of rotation inconvenience, and serviceable life is short.The single pass plastic shell of shell of employed tester on the market has had professional cable tester now, and this problem just has been readily solved.
Summary of the invention
Technical matters to be solved by this invention is the present situation at prior art, and a kind of test circuit that adopts sampling microprocessor CPU control control and treatment center and realize the multifunctional cable tester that various information processings show with the LED charactron is provided.The performance that it has high stable and accuracy reaches the detection display effect of man-machine interface versatile.And have easy to operate, intuitive display, low cost, a good reliability outstanding feature.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the test circuit of multifunctional cable tester, comprise the output port circuit, input port circuit and the power supply that are positioned at Instrument shell, output port circuit and input port circuit have the test port that is used to test tested cable respectively;
The measure of taking comprises: output port circuit and input port circuit have a microprocessor respectively through tie line separately, and microprocessor is connected to frequency output control circuit and display circuit, and is connected with power supply;
The microprocessor CPU control center of microprocessor comprises center part crystal oscillator 12MHZ and microprocessor main control chip, and a heart control action is played in its control to whole center, to the processing of the collection/demonstration of signal;
Display circuit is used for various information processings and shows for to use the LED charactron;
The frequency output control circuit has 1KHZ and 440HZ output pulsation switch is selected.
The measure of taking also comprises: output port circuit and input port circuit include the J﹠amp of 1/8 plug; JACK socket J10, the first netting twine socket J12, the second netting twine socket J13 and loudspeaker socket J25.
Microprocessor is STC89LE52 by the microprocessor main control chip, and TX1 crystal oscillator 12MHZ and pull-up resistor RB1 connect composition.
The frequency output control circuit is connected and is formed by resistance R 23, resistance R 2, the resistance R 12 of the carbon resister of third gear toggle switch S3 and 1/4W.
Power supply by the batteries of 2 joint BT11.5V form, capacitor C6 and triode Q1 connect and form; Triode Q1 is a NPN type triode, its Icm≤250mA; Capacitor C6 is the paster electrochemical capacitor of withstand voltage 16V.
Output port circuit and input port circuit have included socket port J1, J2, J3, J5, J6, J24, J8, J10, J12, J13, J25, RCA1, TT1 and have been respectively external Instrument shell port socket.
The output pulse detection signals that the microprocessor main control chip does not stop from output port by certain hour, pass through tested cable from the input port collection, its inside of data that receives is effectively handled and algorithm, and useful number is converted into video data, be used to detect tested cable.
Compared with prior art, the present invention adopts sampling microprocessor CPU control control and treatment center, has the performance of high stable and accuracy, realizes that with the LED charactron various information processings show the detection display result that reaches the man-machine interface versatile simultaneously; External Instrument shell port socket cooperates with the socket port of corresponding matching of the present invention, and test has outstanding feature easy to operate, intuitive display.
Description of drawings
Fig. 1 is an embodiment of the invention circuit block diagram;
Fig. 2 is the circuit theory diagrams of Fig. 1.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Fig. 1 is to shown in Figure 2, the test circuit of multifunctional cable tester, comprise the output port circuit that is positioned at Instrument shell and No. 2, input port circuit, No. 3, power supply, output port circuit and input port circuit have the test port that is used to test tested cable respectively No. 2; Output port circuit and input port circuit have No. 1, a microprocessor respectively through tie line separately, and microprocessor is connected to No. 4, frequency output control circuit and display circuit for No. 1 No. 5, and are connected for No. 3 with power supply;
The microprocessor CPU control center that No. 1, microprocessor comprises center part crystal oscillator 12MHZ and microprocessor main control chip, and a heart control action is played in its control to whole center, to the processing of the collection/demonstration of signal;
No. 5, display circuit is used for various information processings and shows for to use the LED charactron;
The frequency output control circuit has 1KHZ for No. 4 and 440HZ output pulsation switch is selected.
Output port circuit and input port circuit include J8, JACK socket J10, the first netting twine socket J12, the second netting twine socket J13 and the loudspeaker socket J25 of 1/8 plug for No. 2.
Microprocessor is STC89LE52 by the microprocessor main control chip No. 1, and TX1 crystal oscillator 12MHZ and pull-up resistor RB1 connect composition.
No. 4 resistance R 23 by the carbon resister of third gear toggle switch S3 and 1/4W of frequency output control circuit, resistance R 2, resistance R 12 connect and form.
No. 3, power supply by the batteries of 2 joint BT11.5V form, capacitor C6 and triode Q1 connect and form; Triode Q1 is a NPN type triode, its Icm≤250mA; Capacitor C6 is the paster electrochemical capacitor of withstand voltage 16V.
Output port circuit and input port circuit have included socket port J1, J2, J3, J5, J6, J24, J8, J10, J12, J13, J25, RCA1, TT1 for No. 2 and have been respectively external Instrument shell port socket.
The output pulse detection signals that the microprocessor main control chip does not stop from output port by certain hour, pass through tested cable from the input port collection, its inside of data that receives is effectively handled and algorithm, and useful number is converted into video data, be used to detect tested cable.
Mode of operation I-TEST TONE:
After entering TEST TONE mode of operation, tester will be exported square-wave signal between a pin of OUT end and two pin (with reference to), its frequency is defaulted as 440Hz, its effective value (being Vpp/2) is controlled by the third gear toggle switch S3 on the left side, be respectively-6dB ,-9dB and-28dB (corresponding panel silk-screen).Contact button switches can square wave frequency, 1KHz and two kinds of frequencies of 440Hz altogether.When frequency was 1KHz, pilot lamp was bright, did not then work during 440Hz.Signal frequency allows ± 1% error, intensity permission ± 0.5dB.
Mode of operation II-CABLE:
After entering the CABLE mode of operation, tester will send the sequential scanning signal of a 1-8pin from the OUT end, if do not take over what line, the digital display acquiescence shows 1 also flicker, and pilot lamp does not work.
Normally: if institute's survey line number is N (N＜8), then charactron shows that number is N+1, and flicker, and pilot lamp does not work.As institute's survey line number is 8, and charactron is done circulation (8pin socket) from 1-8, and pilot lamp does not work,
Broken string: broken or do not connected as N bar line, then charactron charactron N and flicker, pilot lamp does not work.
Misconnection: if two mutual wrongs of line have been arranged, as the 1st and the 4th wrong, then charactron is that 1 and 4 flickers show that in turn pilot lamp does not work.
Short circuit: if two line short circuits are arranged, as 1 and 3 short circuits, then charactron is 1 and 3 flickers, and pilot lamp is bright.
The many places short circuit: last group of short circuit of a charactron, as 1 and 7 short circuits, 2 and 8 short circuits then only show 1 and 7 short circuits.
Multi-thread short circuit: be in the same place with 4 short circuits with 2 as 1, then charactron shows E, and pilot lamp is bright.
Many places misconnection: only show last group of misconnection.As 1 and 8 misconnection, 2 and 7 misconnection then only show 1 and 8 misconnection simultaneously.
Multi-thread wrong road: be in the same place with 4 misconnection with 2 as 1, then charactron shows E, and pilot lamp is bright.
Misconnection short circuit simultaneously: as 1 and 3 misconnection, simultaneously again with 4 short circuits, the then digital E that shows, pilot lamp is bright.
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (7)
1, the test circuit of multifunctional cable tester comprises the output port circuit, input port circuit and the power supply that are positioned at Instrument shell, and output port circuit and input port circuit have the test port that is used to test tested cable respectively;
It is characterized in that: described output port circuit and input port circuit have a microprocessor respectively through tie line separately, and microprocessor is connected to frequency output control circuit and display circuit, and are connected with described power supply;
The microprocessor CPU control center of described microprocessor comprises center part crystal oscillator 12MHZ and microprocessor main control chip, and a heart control action is played in its control to whole center, to the processing of the collection/demonstration of signal;
Described display circuit is used for various information processings and shows for to use the LED charactron;
Described frequency output control circuit has 1KHZ and 440HZ output pulsation switch is selected.
2, the test circuit of multifunctional cable tester according to claim 1 is characterized in that: described output port circuit and input port circuit include J8, JACK socket J10, the first netting twine socket J12, the second netting twine socket J13 and the loudspeaker socket J25 of 1/8 plug.
3, the test circuit of multifunctional cable tester according to claim 1 is characterized in that: described microprocessor is STC89LE52 by the microprocessor main control chip, and TX1 crystal oscillator 12MHZ and pull-up resistor RB1 connect composition.
4, the test circuit of multifunctional cable tester according to claim 1 is characterized in that: described frequency output control circuit is connected and is formed by resistance R 23, resistance R 2, the resistance R 12 of the carbon resister of third gear toggle switch S3 and 1/4W.
5, the test circuit of multifunctional cable tester according to claim 1 is characterized in that: described power supply by the batteries of 2 joint BT11.5V form, capacitor C6 and triode Q1 connect and form; Triode Q1 is a NPN type triode, its Icm≤250mA; Capacitor C6 is the paster electrochemical capacitor of withstand voltage 16V.
6, the test circuit of multifunctional cable tester according to claim 1 is characterized in that: described output port circuit and input port circuit have included socket port J1, J2, J3, J5, J6, J24, J8, J10, J12, J13, J25, RCA1, TT1 and have been respectively external described Instrument shell port socket.
7, according to the test circuit of the described multifunctional cable tester of the arbitrary claim of claim 1 to 6, it is characterized in that: the output pulse detection signals that described microprocessor main control chip does not stop from output port by certain hour, pass through tested cable from the input port collection, its inside of data that receives is effectively handled and algorithm, and useful number is converted into video data, be used to detect tested cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610052082XA CN100409017C (en) | 2006-06-22 | 2006-06-22 | Testing circuit of multifunctional cable tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610052082XA CN100409017C (en) | 2006-06-22 | 2006-06-22 | Testing circuit of multifunctional cable tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1866042A true CN1866042A (en) | 2006-11-22 |
| CN100409017C CN100409017C (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610052082XA Expired - Fee Related CN100409017C (en) | 2006-06-22 | 2006-06-22 | Testing circuit of multifunctional cable tester |
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| Country | Link |
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| CN (1) | CN100409017C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955096A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Cable testing mechanism |
| CN102963395A (en) * | 2012-12-11 | 2013-03-13 | 南京泰通科技有限公司 | Railway semi-automatic block information system capable of monitoring in real time and working method thereof |
| CN103245867A (en) * | 2012-02-10 | 2013-08-14 | 南京普爱射线影像设备有限公司 | Detection method of gigabit network cable |
| CN102097717B (en) * | 2009-12-11 | 2014-04-30 | 上海卫星工程研究所 | Automatic detection switchover system for cable |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128744Y (en) * | 1992-06-25 | 1993-03-24 | 梁正奎 | Test instrument for multicore cable |
| CN1673763A (en) * | 2004-03-24 | 2005-09-28 | 联想(北京)有限公司 | Multifunction tester for electric cable |
| CN2758784Y (en) * | 2004-12-27 | 2006-02-15 | 沈科学 | Cable tester |
-
2006
- 2006-06-22 CN CNB200610052082XA patent/CN100409017C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097717B (en) * | 2009-12-11 | 2014-04-30 | 上海卫星工程研究所 | Automatic detection switchover system for cable |
| CN103245867A (en) * | 2012-02-10 | 2013-08-14 | 南京普爱射线影像设备有限公司 | Detection method of gigabit network cable |
| CN102955096A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Cable testing mechanism |
| CN102963395A (en) * | 2012-12-11 | 2013-03-13 | 南京泰通科技有限公司 | Railway semi-automatic block information system capable of monitoring in real time and working method thereof |
| CN102963395B (en) * | 2012-12-11 | 2015-03-04 | 南京泰通科技有限公司 | Railway semi-automatic block information system capable of monitoring in real time and working method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100409017C (en) | 2008-08-06 |
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| C14 | Grant of patent or utility model | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Soundking Electronic Technology Co., Ltd. Assignor: Wang Xianggui Contract fulfillment period: 2008.10.6 to 2026.6.22 contract change Contract record no.: 2008310000187 Denomination of invention: Testing circuit of multifunctional cable tester Granted publication date: 20080806 License type: Exclusive license Record date: 20081020 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.6 TO 2026.6.22; CHANGE OF CONTRACT Name of requester: SHANGHAI YINWANG ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20081020 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 |