CN207457407U - Portable simple 2M line test equipments - Google Patents
Portable simple 2M line test equipments Download PDFInfo
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- CN207457407U CN207457407U CN201721606620.5U CN201721606620U CN207457407U CN 207457407 U CN207457407 U CN 207457407U CN 201721606620 U CN201721606620 U CN 201721606620U CN 207457407 U CN207457407 U CN 207457407U
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- led light
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- triode
- buzzer
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Abstract
The utility model is related to a kind of portable simple 2M line test equipments, including local terminal and opposite end；Wherein local terminal includes resistance R1, triode Q1, power supply DC, buzzer A1 and LED light D1, wherein one end of resistance R1 and the cage connection of one end connector of 2M lines, the base stage connection of the other end triode Q1 of resistance R1, the emitter of triode Q1 is connected with the anode of power supply DC, the collector of triode Q1 is connected with the positive input terminal of buzzer A1, the negative input end of buzzer A1 is connected with the cathode of LED light D1, the cathode of power supply DC, and the anode of the LED light D1 is connected with the inner core of one end connector of 2M lines；Opposite end includes LED light D2, resistance R1, and wherein one end of resistance R1 and the cage connection of another end connector of 2M lines, the other end of resistance R1 is connected with the cathode of LED light D2, and the anode of LED light D2 is connected with the inner core of another end connector of 2M lines.
Description
Technical field
The present invention relates to 2M line detection fields, more particularly, to a kind of portable simple 2M line test equipments.
Background technology
The test signal output terminal and reception signal input part of currently used 2M lines test equipment are integrated in a test
On instrument, 2M lines test equipment sends test letter by test signal output terminal to one end of 2M lines specifically used when
Number, the signal then fed back to by the reception signal input part being connected with the 2M line other ends analyze 2M lines there are the problem of.By
It is longer that fixed and length is generally all laid in 2M lines, therefore, it is necessary to using longer wire rod by 2M lines when wiring measures
The test signal output terminal of test equipment and the both ends of reception signal input part and 2M lines connect, and measure the process used not
It is convenient.
The content of the invention
The present invention is awkward technological deficiency existing for the existing 2M lines test equipment of solution, provides a kind of separation
The 2M line test equipments of setting.
For realization more than goal of the invention, the technical solution adopted is that：
Portable simple 2M line test equipments, including local terminal and opposite end；
Wherein local terminal includes one end of resistance R1, triode Q1, power supply DC, buzzer A1 and LED light D1, wherein resistance R1
With the cage connection of one end connector of 2M lines, the base stage of the other end triode Q1 of resistance R1 connects, the emitter of triode Q1 with
The anode connection of power supply DC, the collector of triode Q1 are connected with the positive input terminal of buzzer A1, the negative input end of buzzer A1
It is connected with the cathode of LED light D1, the cathode of power supply DC, the anode of the LED light D1 is connected with the inner core of one end connector of 2M lines；
Opposite end includes LED light D2, resistance R1, wherein one end of resistance R1 and the cage connection of another end connector of 2M lines, electricity
The other end of resistance R1 is connected with the cathode of LED light D2, and the anode of LED light D2 is connected with the inner core of another end connector of 2M lines.
When being tested using device provided by the invention 2M lines, whether 2M lines can be worked normally, short circuit or short-circuit
It is tested, concrete principle is as follows：
（1）When 2M lines work normally, the inner core output high level of 2M lines, shielding line output low level, therefore and 2M
The inner core output high level of two connectors of line inner core both ends connection, and two connectors being connected with 2M line shielding lines both ends is outer
Shell is grounded, and LED light D2 is lighted at this time, and the anode of LED light D1 connects high level, minus earth, so LED light D1 is lighted；And bee
Ring device A1 is since triode Q1 is not turned on, so it is in not triggering state.
（2）When 2M line short circuits, the inner cores of 2M lines output high level, shielding line output high level, thus in 2M lines
The inner core output high level of two connectors of core both ends connection, and the shell for two connectors being connected with 2M line shielding lines both ends is defeated
Go out high level, LED light D2 does not work at this time, and the anode of LED light D1 connects high level, minus earth, so LED light D1 is lighted；And
Buzzer A1 is since triode Q1 is turned on, and in triggering state, and buzzer A1 alarm prompts circuit is in the state of short circuit.
（3）When 2M line open circuits, the inner cores of 2M lines output low level, shielding line output low level, thus in 2M lines
The inner core ground connection of two connectors of core both ends connection, and the earthing of casing for two connectors being connected with 2M line shielding lines both ends, this
When LED light D2 do not work, and the plus earth of LED light D1, minus earth, so LED light D1 does not work；And buzzer A1 is due to three poles
Pipe Q1 is not turned on, so it is in not triggering state.
Compared with prior art, the beneficial effects of the invention are as follows：
2M lines test equipment provided by the invention measures 2M lines using separated local terminal and opposite end, with existing skill
The test equipment that art provides is compared, and need not spend the time in connection arrangement, quick using enhanced convenience.
Description of the drawings
Fig. 1 is the structure diagram of instrument.
Specific embodiment
Attached drawing is only for illustration, it is impossible to be interpreted as the limitation to this patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, the present invention provides a kind of portable simple 2M line test equipments, for measuring the connection of Aa and Bb
State, including local terminal and opposite end；
Wherein local terminal includes one end of resistance R1, triode Q1, power supply DC, buzzer A1 and LED light D1, wherein resistance R1
With the cage connection of one end connector of 2M lines, the base stage of the other end triode Q1 of resistance R1 connects, the emitter of triode Q1 with
The anode connection of power supply DC, the collector of triode Q1 are connected with the positive input terminal of buzzer A1, the negative input end of buzzer A1
It is connected with the cathode of LED light D1, the cathode of power supply DC, the anode of the LED light D1 is connected with the inner core of one end connector of 2M lines；
Opposite end includes LED light D2, resistance R1, wherein one end of resistance R1 and the cage connection of another end connector of 2M lines, electricity
The other end of resistance R1 is connected with the cathode of LED light D2, and the anode of LED light D2 is connected with the inner core of another end connector of 2M lines.
When being tested using device provided by the invention 2M lines, whether 2M lines can be worked normally, short circuit or short-circuit
It is tested, concrete principle is as follows：
（1）When 2M lines work normally, the inner core output high level of 2M lines, shielding line output low level, therefore and 2M
The inner core output high level of two connectors of line inner core both ends connection, and two connectors being connected with 2M line shielding lines both ends is outer
Shell is grounded, and LED light D2 is lighted at this time, and the anode of LED light D1 connects high level, minus earth, so LED light D1 is lighted；And bee
Ring device A1 is since triode Q1 is not turned on, so it is in not triggering state.
（2）When 2M line short circuits, the inner cores of 2M lines output high level, shielding line output high level, thus in 2M lines
The inner core output high level of two connectors of core both ends connection, and the shell for two connectors being connected with 2M line shielding lines both ends is defeated
Go out high level, LED light D2 does not work at this time, and the anode of LED light D1 connects high level, minus earth, so LED light D1 is lighted；And
Buzzer A1 is since triode Q1 is turned on, and in triggering state, and buzzer A1 alarm prompts circuit is in the state of short circuit.
（3）When 2M line open circuits, the inner cores of 2M lines output low level, shielding line output low level, thus in 2M lines
The inner core ground connection of two connectors of core both ends connection, and the earthing of casing for two connectors being connected with 2M line shielding lines both ends, this
When LED light D2 do not work, and the plus earth of LED light D1, minus earth, so LED light D1 does not work；And buzzer A1 is due to three poles
Pipe Q1 is not turned on, so it is in not triggering state.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (1)
1. portable simple 2M line test equipments, it is characterised in that：Including local terminal and opposite end；
Wherein local terminal includes resistance R1, triode Q1, power supply DC, buzzer A1 and LED light D1, wherein one end of resistance R1 and 2M
The cage connection of one end connector of line, the base stage connection of the other end triode Q1 of resistance R1, the emitter and power supply of triode Q1
The anode connection of DC, the collector of triode Q1 are connected with the positive input terminal of buzzer A1, the negative input end and LED of buzzer A1
The cathode connection of the cathode, power supply DC of lamp D1, the anode of the LED light D1 are connected with the inner core of one end connector of 2M lines；
Opposite end includes LED light D2, resistance R1, wherein one end of resistance R1 and the cage connection of another end connector of 2M lines, resistance R1
The other end be connected with the cathode of LED light D2, the anode of LED light D2 is connected with the inner core of another end connector of 2M lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606620.5U CN207457407U (en) | 2017-11-27 | 2017-11-27 | Portable simple 2M line test equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721606620.5U CN207457407U (en) | 2017-11-27 | 2017-11-27 | Portable simple 2M line test equipments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207457407U true CN207457407U (en) | 2018-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721606620.5U Active CN207457407U (en) | 2017-11-27 | 2017-11-27 | Portable simple 2M line test equipments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207457407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557964A (en) * | 2020-12-02 | 2021-03-26 | 中国南方电网有限责任公司超高压输电公司梧州局 | Portable 2M line detection device |
-
2017
- 2017-11-27 CN CN201721606620.5U patent/CN207457407U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557964A (en) * | 2020-12-02 | 2021-03-26 | 中国南方电网有限责任公司超高压输电公司梧州局 | Portable 2M line detection device |
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