CN203872181U - Telephone line hunting device - Google Patents
Telephone line hunting device Download PDFInfo
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- CN203872181U CN203872181U CN201420318439.4U CN201420318439U CN203872181U CN 203872181 U CN203872181 U CN 203872181U CN 201420318439 U CN201420318439 U CN 201420318439U CN 203872181 U CN203872181 U CN 203872181U
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Abstract
The utility model provides a telephone line hunting device comprising an emitter and a receiver; the emitter comprises a signal generating module, a signal modulating module and a first amplification module; the signal generating module generates high frequency and audio frequency signals with different frequencies, wherein the high frequency signal serves as a carrier wave signal; the high frequency signal and the audio frequency signal are modulated by the signal modulating module so as to form a modulation signal amplified by the first amplification module, thus forming an amplified modulation signal; the first amplification module is connected with the telephone line and emits the amplified modulation signal through the telephone line; the receiver comprises a signal reception module, a second amplification module, a modulate/demodulate module, a frequency selection circuit module and an indicator; the signal reception module receives the amplified modulation signal emitted by the emitter, and sends the received modulation signal to the second amplification module; the received modulation signal is amplified, and then is demodulated by the modulate/demodulate module; the demodulated signal enters the frequency selection circuit module for frequency selection identification so as to generate a corresponding audio frequency signal; an output end of the frequency selection circuit module is connected with the indicator.
Description
Technical field
The utility model relates to a kind of telephone wire hunting device.
Background technology
Current known telephone wire line finder has two kinds, and a kind of is contact: with metal probe, directly contact telephone wire core metal part, then judge in conjunction with universal instrument.This mode needs the insulating covering of strip off telephone wire, due to inconvenience, seldom uses.A kind of is contactless: audio-frequency generator and audio receiver, consist of, because do not need the insulating covering of strip off telephone wire to survey, replace gradually contact telephone wire line finder to come into operation.On the port of the audio signal that usually contactless telephone wire line finder sends by clapp oscillator by RJ11 general-purpose interface access target phone line, make target phone line loop around produce one around signal field, utilize the very fast signal field that it sends with end identification in loop of receiver on the way, thereby find this objective telephone wire.
But what the reflector of existing contactless telephone wire line finder adopted is audio signal, signal strength signal intensity is inadequate, and transmitting range is shorter, thereby hunting distance is also shorter; And what the receiving unit of receiver adopted is that metal probe induction receives the audio signal that reflector sends, near tested cable, there is AC220, during the interference sources such as 50HZ, receiver poor anti jamming capability, is very easily interfered, and the signal receiving has multi-frequency, be in a mess, use sound effect is not good enough, and sensitivity is not high and have a lot of noises, thereby has increased the difficulty of detection operations.
Therefore, be necessary to provide a kind of Novel telephone line hunting device to overcome above-mentioned defect.
Utility model content
For above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of telephone wire hunting device, the signal strength signal intensity of the reflector transmitting of this telephone wire hunting device is good, transmitting range is long, hunting distance is also long, the receiver antijamming capability of this telephone wire hunting device is strong, uses sound effect good, highly sensitive and noise is few.
In order to solve the problems of the technologies described above, the utility model provides a kind of telephone wire hunting device, comprise reflector and receiver, described reflector comprises signal generating module, signal modulation module, the first amplification module and frequency division module, described signal generating module produces the signal of high frequency and two kinds of different frequencies of audio frequency, described high-frequency signal forms fractional frequency signal through described frequency division module frequency division, described fractional frequency signal is as carrier signal, described fractional frequency signal and audio signal form after modulation signal through described signal modulation module modulation, through described the first amplification module, amplify to form and amplify modulation signal, described the first amplification module connects telephone wire and launches described amplification modulation signal by described telephone wire, described receiver comprises signal receiving module, the second amplification module, modulation /demodulation module, frequency selection circuit module and indicating device, described signal receiving module receives the amplification modulation signal of described reflector transmitting, and the amplification modulation signal receiving is delivered to described the second amplification module and amplify by described modulation /demodulation module and carry out demodulation, signal after demodulation enters described frequency selection circuit module to carry out frequency-selecting identification and produces corresponding audio signal, and the output of described frequency selection circuit module is connected with indicating device.
Further improvement of the utility model is that described signal generating module comprises that the first vibration produces circuit, the first shaping circuit, the second vibration generation circuit and the second shaping circuit; Described the first vibration produces circuit generation high-frequency signal and exports after described the first shaping circuit as carrier signal, and described the second vibration generation circuit produces audio signal and exports after described the second shaping circuit.
Further improvement of the utility model is that described signal modulation module comprises signal modulating unit and signal indicating circuit; The described high frequency that described signal generating module produces and the signal of two kinds of different frequencies of audio frequency are modulated at described signal modulating unit, and described signal indicating circuit is electrically connected to described signal modulating unit, is used to indicate the running status of described reflector.
Further improvement of the utility model is that described the first amplification module comprises the first amplifying circuit and second amplifying circuit in parallel with described the first amplifying circuit; Described modulation signal amplifies and forms amplification modulation signal through described the first amplifying circuit, and described the first amplifying circuit connects telephone wire and also by described telephone wire, launches described amplification modulation signal; Described the second amplifying circuit is electrically connected to zero line.
Further improvement of the utility model is that described signal receiving module adopts LC antiresonant circuit.
Further improvement of the utility model is, described the second amplification module comprises one-level amplifying circuit and second amplifying circuit, described modulation signal through one-level amplifying circuit amplify by described second amplifying circuit again, amplify after output.
Further improvement of the utility model is, described receiver also comprises audio frequency amplification module, and the audio signal that the frequency-selecting of described frequency selection circuit module identifies is indicated by described indicating device after described audio frequency amplification module amplifies again.
Further improvement of the utility model is that described indicating device is liquid crystal indicator, light-emitting diode, loud speaker or earphone.
Further improvement of the utility model is that described signal modulating unit is signal FM circuit or modulation signal circuit.
Further improvement of the utility model is that described one-level amplifying circuit comprises an adjustable potentiometer.
Adopt technique scheme, the signal generating module of described reflector produces the signal (high-frequency signal and audio signal) of two kinds of different frequencies, high-frequency signal forms fractional frequency signal through frequency division module, and amplifies and launch by telephone wire by the first amplification module through the modulation of signal modulation module; The signal receiving module of described receiver adopts LC antiresonant circuit, described LC antiresonant circuit can only receive the signal of a certain frequency, removed the interference of other frequency signal, then through the second amplification module, amplify modulation signal, the demodulation of modulation /demodulation module, through the frequency-selecting of frequency selection circuit module, identify corresponding audio signal again, through audio frequency amplification module, amplify, finally by indicating device, indicate.The working site existing at a large amount of telephone wires, the signal receiver of described telephone wire hunting device is pointed to tested telephone wire, if the signal receiver of described telephone wire hunting device sends the indication of buzzerphone, liquid crystal indicator, light-emitting diode is lighted or earphone is sounded signal, tested telephone wire is target phone line.
Compared with prior art, the utility model has the advantage of, the signal strength signal intensity of the reflector transmitting of this telephone wire hunting device is good, transmitting range is long, hunting distance is also long, and the receiver antijamming capability of this telephone wire hunting device is strong, uses sound effect good, highly sensitive and noise is few, the audio signal of output is clear.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of telephone wire hunting device of the present utility model;
Fig. 2 is the theory diagram of the reflector of telephone wire hunting device of the present utility model;
Fig. 3 is the theory diagram of the receiver of telephone wire hunting device of the present utility model.
In figure, each component names is as follows:
100-reflector;
110-signal generating module;
The 1101-the first vibration produces circuit;
The 1102-the first shaping circuit;
The 1103-the second vibration produces circuit;
The 1104-the second shaping circuit;
120-signal modulation module;
1201-signal modulating unit;
1202-signal indicating circuit;
The 130-the first amplification module;
The 1301-the first amplifying circuit;
The 1302-the second amplifying circuit;
140-telephone wire;
150-zero line;
160-frequency division module;
200-receiver;
210-signal receiving module;
2101-LC antiresonant circuit;
The 220-the second amplification module;
2201-one-level amplifying circuit;
22011-adjustable potentiometer;
2202-second amplifying circuit;
230-modulation /demodulation module;
240-frequency selection circuit module;
250-audio frequency amplification module;
260-indicating device.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the utility model is further illustrated, in accompanying drawing, similarly element numbers represents similar element.
As shown in Figure 1, telephone wire hunting device of the present utility model comprises reflector 100 and receiver 200.On the port of described reflector 100 by general-purpose interface RJ11 access target phone line 140, make target phone line 140 loops around produce one around signal field, described receiver 200 utilizes its probe in loop, to identify with end the signal field of described reflector 100 transmittings on the way, thereby finds the telephone wire 140 of this entry.
As shown in Figure 2, the reflector 100 of this telephone wire hunting device comprises signal generating module 110, signal modulation module 120, the first amplification module 130 and frequency division module 160; Described signal generating module 110 produces the signal of high frequency and two kinds of different frequencies of audio frequency, described high-frequency signal forms fractional frequency signal through described frequency division module 160 frequency divisions, described fractional frequency signal is as carrier signal, described fractional frequency signal and audio signal form after modulation signal through described signal modulation module 120 modulation, through described the first amplification module 130, amplify to form and amplify modulation signal, described the first amplification module 130 connects telephone wire 140 also by the described amplification modulation signal of described telephone wire 140 transmitting.Described frequency division module 160 is common frequency dividing circuit.Described signal generating module 110 comprises that the first vibration produces circuit 1101, the first shaping circuit 1102, the second vibration generation circuit 1103 and the second shaping circuit 1104; Described the first vibration produces circuit 1101 generation high-frequency signals and exports after described the first shaping circuit 1102, and described the second vibration generation circuit 103 produces audio signal and exports after described the second shaping circuit 1104.Described signal modulation module 120 comprises signal modulating unit 1201 and signal indicating circuit 1202; The signal of described fractional frequency signal and two kinds of different frequencies of audio signal is modulated at described signal modulating unit 1201, described signal indicating circuit 1202 is electrically connected to described signal modulating unit 1201, be used to indicate the running status of described reflector 100, described signal indicating circuit 1202 adopts resistance and light-emitting diode series circuit.Described signal modulating unit 1201 adopt signal FM circuit or modulation signal circuit all can, implementation result of the present utility model is not affected.Described the first amplification module 130 comprises the first amplifying circuit 1301 and second amplifying circuit 1302 in parallel with described the first amplifying circuit 1301; Described the first amplifying circuit 1301 is electrically connected to described telephone wire 140, and described the second amplifying circuit 1302 is electrically connected to zero line 150.The first vibration of described signal generating module 110 produce circuit 1101 produce high-frequency signals after the first shaping circuit 1102 of signal generating module 110 carries out rectification as carrier signal; The second vibration of described signal generating module 110 produces circuit 1103 generation audio signals and through described signal modulating unit 1201 modulation, form modulation signals with described carrier signal after the second shaping circuit 1104 of signal generating module 110 carries out rectification; Described modulation signal amplifies formation amplification modulation signal through the first amplifying circuit 1301 of described amplification module 130, and described the first amplifying circuit 1301 connects telephone wires 140 and launches described amplification modulation signal by telephone wire 140.Described the first amplifying circuit 1301 and the second amplifying circuit 1302 are all analog amplify circuit, and the circuit structure of described the second amplifying circuit 1302 is similar to described the first amplifying circuit 1301, for preventing that this sender unit is burned.
As shown in Figure 3, the receiver 200 of this telephone wire hunting device comprises signal receiving module 210, the second amplification module 220, modulation /demodulation module 230, frequency selection circuit module 240, audio frequency amplification module 250 and indicating device 260.Described signal receiving module 210 adopts LC antiresonant circuit 2101, described LC antiresonant circuit 2101 resonance receive the amplification modulation signal of described reflector 100 transmittings, and the amplification modulation signal receiving are delivered to described the second amplification module 220 and amplify.Described the second amplification module 220 comprises one-level amplifying circuit 2201 and second amplifying circuit 2202, described amplification modulation signal is output after described second amplifying circuit 2202 amplifies again again after one-level amplifying circuit 2201 amplifies, and described one-level amplifying circuit 2201 and second amplifying circuit 2202 are all operational amplification circuit.The amplification modulation signal carrying out after secondary amplification through described the second amplification module 220 carries out demodulation through described modulation /demodulation module 230, amplification modulation signal after demodulation enters described frequency selection circuit module 240 to carry out frequency-selecting identification and produces corresponding audio signal, and the audio signal that described frequency selection circuit module 240 frequency-selectings identify is indicated by described indicating device 260 after described audio frequency amplification module 250 amplifies again.Described LC antiresonant circuit 2101 comprises a resonant inductance, and described resonant inductance is outstanding to be installed on outside the casing of this telephone wire hunting device, is similar to probe.
The one-level amplifying circuit 2201 of described the second amplification module 220 comprises an adjustable potentiometer 22011, described adjustable potentiometer 22011 is for when finding target phone line, according to the distance of this resonant inductance and target phone line, adjust gradually the sensitivity of this signal receiver, thereby effectively find target phone line.Described modulation /demodulation module 230 is corresponding with the signal modulation module of described reflector 100, can effectively demodulate the modulation signal of signal modulation module 120 generations of described reflector 100.Described indicating device 260 is liquid crystal indicator, light-emitting diode, loud speaker or earphone.
Adopt technique scheme, the signal generating module of described reflector produces the signal (high-frequency signal and audio signal) of two kinds of different frequencies, high-frequency signal forms fractional frequency signal through frequency division module, and amplifies and launch by telephone wire by the first amplification module through the modulation of signal modulation module; The signal receiving module of described receiver adopts LC antiresonant circuit, described LC antiresonant circuit can only receive the signal of a certain frequency, removed the interference of other frequency signal, then through the second amplification module, amplify modulation signal, the demodulation of modulation /demodulation module, through the frequency-selecting of frequency selection circuit module, identify corresponding audio signal again, through audio frequency amplification module, amplify, finally by indicating device, indicate.The working site existing at a large amount of telephone wires, the signal receiver of described telephone wire hunting device is pointed to tested telephone wire, if the signal receiver of described telephone wire hunting device sends the indication of buzzerphone, liquid crystal indicator, light-emitting diode is lighted or earphone is sounded signal, tested telephone wire is target phone line.
The utility model has the advantage of, the signal strength signal intensity of the reflector transmitting of this telephone wire hunting device is good, and transmitting range is long, hunting distance is also long, and the receiver antijamming capability of this telephone wire hunting device is strong, uses sound effect good, highly sensitive and noise is few, the audio signal of output is clear.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (10)
1. a telephone wire hunting device, comprise reflector (100) and receiver (200), it is characterized in that: described reflector (100) comprises signal generating module (110), signal modulation module (120), the first amplification module (130) and frequency division module (160), described signal generating module (110) produces the signal of high frequency and two kinds of different frequencies of audio frequency, described high-frequency signal forms fractional frequency signal through described frequency division module (160) frequency division, described fractional frequency signal is as carrier signal, described fractional frequency signal and audio signal form after modulation signal through described signal modulation module (120) modulation, through described the first amplification module (130), amplify to form and amplify modulation signal, described the first amplification module (130) connects telephone wire (140) and launches described amplification modulation signal by described telephone wire (140), described receiver (200) comprises signal receiving module (210), the second amplification module (220), modulation /demodulation module (230), frequency selection circuit module (240) and indicating device (260), described signal receiving module (210) receives the amplification modulation signal of described reflector (100) transmitting, and the amplification modulation signal receiving is delivered to described the second amplification module (220) and amplify by described modulation /demodulation module (230) and carry out demodulation, signal after demodulation enters described frequency selection circuit module (240) to carry out frequency-selecting identification and produces corresponding audio signal, the output of described frequency selection circuit module (240) is connected with indicating device (260).
2. telephone wire hunting device as claimed in claim 1, is characterized in that: described signal generating module (110) comprises that the first vibration produces circuit (1101), the first shaping circuit (1102), the second vibration generation circuit (1103) and the second shaping circuit (1104); Described the first vibration produces circuit (1101) generation high-frequency signal and exports after described the first shaping circuit (1102) as carrier signal, and described the second vibration generation circuit (1103) produces audio signal and exports after described the second shaping circuit (1104).
3. telephone wire hunting device as claimed in claim 1, is characterized in that: described signal modulation module (120) comprises signal modulating unit (1201) and signal indicating circuit (1202); The described high frequency that described signal generating module (110) produces and the signal of two kinds of different frequencies of audio frequency are modulated at described signal modulating unit (1201), described signal indicating circuit (1202) is electrically connected to described signal modulating unit (1201), is used to indicate the running status of described reflector (100).
4. telephone wire hunting device as claimed in claim 1, is characterized in that: described the first amplification module (130) comprises the first amplifying circuit (1301) and second amplifying circuit (1302) in parallel with described the first amplifying circuit (1301); Described modulation signal amplifies and forms amplification modulation signal through described the first amplifying circuit (1301), and described the first amplifying circuit (1301) connects telephone wire (140) and launches described amplification modulation signal by described telephone wire (140); Described the second amplifying circuit (1302) is electrically connected to zero line (150).
5. telephone wire hunting device as claimed in claim 1, is characterized in that: described signal receiving module (210) adopts LC antiresonant circuit (2101).
6. telephone wire hunting device as claimed in claim 1, it is characterized in that: described the second amplification module (220) comprises one-level amplifying circuit (2201) and second amplifying circuit (2202), described modulation signal amplifies by exporting after described second amplifying circuit (2202) amplification through one-level amplifying circuit (2201) again.
7. telephone wire hunting device as claimed in claim 1, it is characterized in that: described receiver (200) also comprises audio frequency amplification module (250), the audio signal that described frequency selection circuit module (240) frequency-selecting identifies is indicated by described indicating device (260) after described audio frequency amplification module (250) amplifies again.
8. the telephone wire hunting device as described in claim 1 to 7 any one, is characterized in that: described indicating device (260) is liquid crystal indicator, light-emitting diode, loud speaker or earphone.
9. telephone wire hunting device as claimed in claim 3, is characterized in that: described signal modulating unit (1201) is signal FM circuit or modulation signal circuit.
10. the signal receiving device of novel line finder as claimed in claim 6, is characterized in that: described one-level amplifying circuit (2201) comprises an adjustable potentiometer (22011).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420318439.4U CN203872181U (en) | 2014-06-16 | 2014-06-16 | Telephone line hunting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420318439.4U CN203872181U (en) | 2014-06-16 | 2014-06-16 | Telephone line hunting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203872181U true CN203872181U (en) | 2014-10-08 |
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ID=51653100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420318439.4U Expired - Lifetime CN203872181U (en) | 2014-06-16 | 2014-06-16 | Telephone line hunting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203872181U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998227A (en) * | 2017-02-10 | 2017-08-01 | 北京邮电大学世纪学院 | A kind of contactless optical cable identifier and optical cable recognition methods |
| CN107395253A (en) * | 2017-08-21 | 2017-11-24 | 优利德科技(中国)有限公司 | It is a kind of to adapt in quick and high speed switch new network hunting device |
| CN114754977A (en) * | 2022-03-21 | 2022-07-15 | 河南华创通信设备有限公司 | An optical cable identification instrument capable of accurately identifying optical cables |
-
2014
- 2014-06-16 CN CN201420318439.4U patent/CN203872181U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998227A (en) * | 2017-02-10 | 2017-08-01 | 北京邮电大学世纪学院 | A kind of contactless optical cable identifier and optical cable recognition methods |
| CN106998227B (en) * | 2017-02-10 | 2023-12-22 | 北京邮电大学世纪学院 | Non-contact optical cable identification instrument and optical cable identification method |
| CN107395253A (en) * | 2017-08-21 | 2017-11-24 | 优利德科技(中国)有限公司 | It is a kind of to adapt in quick and high speed switch new network hunting device |
| CN107395253B (en) * | 2017-08-21 | 2023-04-18 | 优利德科技(中国)股份有限公司 | Novel network hunting device capable of adapting to fast and high-speed switch |
| CN114754977A (en) * | 2022-03-21 | 2022-07-15 | 河南华创通信设备有限公司 | An optical cable identification instrument capable of accurately identifying optical cables |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |