CN207662985U - DC suppling equipment line inspection instrument - Google Patents
DC suppling equipment line inspection instrument Download PDFInfo
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- CN207662985U CN207662985U CN201721848346.2U CN201721848346U CN207662985U CN 207662985 U CN207662985 U CN 207662985U CN 201721848346 U CN201721848346 U CN 201721848346U CN 207662985 U CN207662985 U CN 207662985U
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- signal processing
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Abstract
The utility model discloses a kind of DC suppling equipment line inspection instruments, including separately positioned end examination electric equipment and front end signal processing equipment；The end examination electric equipment includes polarity detection circuit and signal generating circuit, the polarity detection circuit and signal generating circuit are electrically connected with the feeder ear of test line, the front end signal processing equipment includes the signal acquisition circuit being sequentially electrically connected, signal processing circuit and display screen, and the signal acquisition circuit is also electrically connected with test line.In the utility model, electric equipment, which is tried, by end couples synchronizing signal to the feeder ear of test line, then it utilizes front end signal processing equipment to detect synchronizing signal in the other positions of test line, to judge at 2 points whether on same circuit, improves the accuracy of cable hunting.
Description
Technical field
The utility model is related to line inspection instrument equipment technical fields, more particularly to a kind of DC suppling equipment line inspection instrument.
Background technology
Currently, the equipment and power circuit of communication base station Zhong Duojia equipment operator mix, in installation for measuring
When the branch measuring equipment of the equipment electricity consumption of each equipment operator, a very important job is exactly to each equipment operator
The supply line of equipment cleared up.In actual installation branch measuring equipment, operating personnel generally feed back in the presence of scene electricity
Source wiring is chaotic, is not easy to recognize, the problems such as harness is uncertain, thus leads to that equipment installation speed is slow, error rate is high.Mesh
The current value of the current value and transmitting equipment end of power output end is tested in preceding equipment harness hunting using clamp on amperemeter, if two
The current value of person is identical, is taken as the same line；But largely there are the identical and close circuits of current value at scene, meanwhile,
The case where measuring current value error 2% or more using clamp on amperemeter, therefore judging by accident is frequent occurrence.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of DC suppling equipment line inspection instrument, lead to
The feeder ear that end examination electric equipment is crossed in test line couples synchronizing signal, and front end signal processing equipment is in other positions of test line
Detection synchronizing signal is set, to realize cable hunting, improves the accuracy rate of hunting.
The purpose of this utility model is achieved through the following technical solutions：DC suppling equipment line inspection instrument, including point
End examination electric equipment from setting and front end signal processing equipment；The end examination electric equipment includes polarity detection circuit and signal
Generation circuit, the polarity detection circuit and signal generating circuit are electrically connected with the feeder ear of test line, the front end letter
Number processing equipment includes the signal acquisition circuit being sequentially electrically connected, signal processing circuit and display screen, the signal acquisition circuit
Also it is electrically connected with test line.
Preferably, the front end signal processing equipment block further includes：Power supply, the power supply are adopted with signal respectively
Collector, signal processing circuit and display screen electrical connection.
Preferably, the signal acquisition circuit includes sensor and analog to digital conversion circuit, the sensor respectively with modulus
Conversion circuit and test line electrical connection, analog-digital conversion circuit as described are also electrically connected with signal processing circuit.
Preferably, the signal acquisition circuit further includes Anti-aliasing Filter Circuits, and the Anti-aliasing Filter Circuits setting exists
Between analog to digital conversion circuit and signal processing circuit, the Anti-aliasing Filter Circuits respectively with analog to digital conversion circuit and signal processing
Circuit is electrically connected.
Preferably, the sensor is voltage sensor or current sensor.
Preferably, the end examination electric equipment further includes reverse-connection preventing circuit, and the input terminal of the reverse-connection preventing circuit passes through electricity
Source interface is electrically connected with the output end of external dc power, the output end of the reverse-connection preventing circuit respectively with polarity detection circuit and
The power end of signal generating circuit is electrically connected.
Preferably, the reverse-connection preventing circuit includes bridge rectifier, current-limiting circuit and regulator circuit, the bridge rectifier
The first input end of circuit and the power supply positive input terminal of power interface connect, the second input terminal and the electricity of the bridge rectifier
The power supply negative input end of source interface connects, and the negative output terminal ground connection of the bridge rectifier, the bridge rectifier is just
Output end is connect with the power end of current-limiting circuit, signal generating circuit and/or polarity detection circuit respectively, the current-limiting circuit
The input terminal of output end and regulator circuit connects, and the regulator circuit is also electric with signal generating circuit and/or polarity detection circuit
Connection.
The utility model has the beneficial effects that：
（1）The utility model tries electric equipment by end and couples synchronizing signal to the feeder ear of test line, then utilizes
Whether front end signal processing equipment detects synchronizing signal in the other positions of test line, to be connected between judging at 2 points, i.e.,
2 points whether on same circuit, improve the accuracy of cable hunting；
（2）End tries to be equipped with polarity detection circuit in electric equipment, the positive-negative polarity for detecting test line feeder ear, from
And further increase the accuracy of cable hunting；
（3）The second circuit board that electric equipment is tried in end is equipped with reverse-connection preventing circuit, and electric equipment is tried from In situ DC in end
Power supply can avoid harm caused by reversal connection when obtaining electric energy；
（4）Reverse-connection preventing circuit solves the problems, such as reversal connection using bridge rectifier, and whether the examination of reversal connection end is electric in any case
Equipment can work normally.
Description of the drawings
Fig. 1 is the schematic block diagram of the utility model；
Fig. 2 is the circuit block diagram of signal acquisition circuit in the utility model；
Fig. 3 is the circuit block diagram of reverse-connection preventing circuit in the utility model；
Fig. 4 is a kind of circuit diagram of reverse-connection preventing circuit in the utility model.
Specific implementation mode
Below in conjunction with embodiment, the technical solution of the utility model is clearly and completely described, it is clear that retouched
The embodiment stated is only the utility model a part of the embodiment, instead of all the embodiments.Based in the utility model
Embodiment, the every other embodiment that those skilled in the art are obtained under the premise of not making the creative labor, all belongs to
In the range of the utility model protection.
Refering to fig. 1-4, a kind of DC suppling equipment line inspection instrument is present embodiments provided：
As shown in Figure 1, DC suppling equipment line inspection instrument includes separately positioned end examination electric equipment and front end signal processing
Equipment；The end examination electric equipment includes polarity detection circuit and signal generating circuit, and the polarity detection circuit and signal produce
The signal end of raw circuit is electrically connected by signaling interface with the feeder ear of test line, the polarity detection circuit and signal production
The power end of raw circuit is electrically connected with the output end of external dc power, and the front end signal processing equipment includes sequentially being electrically connected
Signal acquisition circuit, signal processing circuit and the display screen connect, the signal acquisition circuit are also electrically connected with test line.
The front end signal processing equipment block further includes power supply, the power supply respectively with signal acquisition circuit,
Signal processing circuit and display screen electrical connection, power supply are used to supply for signal acquisition circuit, signal processing circuit and display screen
Lithium battery etc. may be used in electricity, power supply.
The signal acquisition circuit includes sensor and analog to digital conversion circuit, the sensor respectively with analog to digital conversion circuit
It is electrically connected with test line, analog-digital conversion circuit as described is also electrically connected with signal processing circuit.Sensor is used for from test line
Middle capture synchronizing signal, analog to digital conversion circuit are used to carry out analog-to-digital conversion to synchronizing signal.Preferably, the sensor is voltage
Sensor or current sensor.
Preferably, the signal acquisition circuit further includes Anti-aliasing Filter Circuits, and the Anti-aliasing Filter Circuits setting exists
Between analog to digital conversion circuit and signal processing circuit, the Anti-aliasing Filter Circuits respectively with analog to digital conversion circuit and signal processing
Circuit is electrically connected.Anti-aliasing Filter Circuits filter out interference, can improve the accuracy of subsequent detection.
The course of work is：End examination electric equipment is electrically connected with the feeder ear of test line, passes through polarity detection circuit pair
The positive-negative polarity of feeder ear is detected, and to assist hunting, generates synchronizing signal by signal generating circuit, and the synchronization is believed
It number is coupled in test line；Then, by the other positions of front end signal processing equipment and test line（Test point）Electrical connection,
Signal acquisition circuit captures the synchronizing signal in test line, then carries out the processing such as analog-to-digital conversion, filtering, letter to synchronizing signal
The energy value for the synchronizing signal that the detection of number processing circuit captures, signal display are used for the energy value of display synchronization signal, behaviour
Make personnel and can determine whether that test point and feeder ear whether on same circuit, to realize cable hunting, carry according to the energy value
The high accuracy of hunting.
It should be noted that positive-negative polarity detection, signal generation and signal energy value can be carried out in the prior art by having
The circuit of detection, polarity detection circuit, signal generating circuit and signal processing circuit etc. in the present embodiment may be used existing
Some interlock circuits；On the basis of combining the information such as the effect of composed structure disclosed by the utility model and each section, ability
Field technique can realize parts selection and the wiring etc. of these circuits without involving an inventive effort；Therefore, the present embodiment is not
The concrete structure of polarity detection circuit, signal generating circuit and signal processing circuit etc. is repeated one by one again.
Preferably, the end examination electric equipment further includes reverse-connection preventing circuit, and the input terminal of the reverse-connection preventing circuit passes through electricity
Source interface is electrically connected with the output end of external dc power, the output end of the reverse-connection preventing circuit respectively with polarity detection circuit and
The power end of signal generating circuit is electrically connected.
Preferably, as shown in figure 3, the reverse-connection preventing circuit includes bridge rectifier, current-limiting circuit and regulator circuit, institute
The power supply positive input terminal of the first input end and power interface of stating bridge rectifier connects, and the second of the bridge rectifier
The power supply negative input end of input terminal and power interface connects, the negative output terminal ground connection of the bridge rectifier, and the bridge-type is whole
The positive output end of current circuit is connect with the power end of current-limiting circuit, signal generating circuit and/or polarity detection circuit respectively, described
The input terminal of the output end of current-limiting circuit and regulator circuit connects, the regulator circuit also with signal generating circuit and/or polarity
Detection circuit is electrically connected.
Reversal connection is solved the problems, such as by bridge rectifier in this implementation so that even if electric equipment 20 is tried in end in reversal connection
It remains to work normally；In addition, being unlikely to short when end being avoided to try the failure of 20 internal circuit of electric equipment by the way that current-limiting circuit is arranged
Road has an impact base station.
Preferably, the regulator circuit includes first order regulator circuit and second level regulator circuit, the second level voltage stabilizing
The input terminal of circuit is connected through first order regulator circuit and the output end of current-limiting circuit, and the first order regulator circuit is produced with signal
Raw circuit and/or polarity detection circuit electrical connection, the second level regulator circuit and signal generating circuit and/or Check up polarity electricity
Road is electrically connected.The reverse-connection preventing circuit further includes first state indicating circuit and the second condition indication circuit, the first state
Indicating circuit is connect with current-limiting circuit, second condition indication circuit respectively with the power supply positive input terminal and power supply of power interface
Negative input end connects.
As shown in figure 4, the bridge rectifier includes the first diode D1, the second diode D2, third diode D3
Cathode docking with the 4th diode D4, the cathode and the second diode D2 of the first diode D1 constitutes bridge rectifier
Positive output end, the anode docking of the third diode D3 and the 4th diode D4 constitutes the negative output of bridge rectifier
End, the cathode of the third diode D3 and the anode of the first diode D1 connect and compose the first input of bridge rectifier
End, the cathode of the 4th diode D4 and the anode of the second diode D2 connect and compose the second input of bridge rectifier
End.Preferably, the input power of the end examination electric equipment 20 is 48V DC power supplies.
Second condition indication circuit includes the 8th diode D8, the 9th diode D9, the tenth diode D10, the tenth
One diode D11, twelfth resistor R12 and thirteenth resistor R13, the 8th diode D8 and the tenth diode D10 are
The cathode of light emitting diode, the 8th diode D8 is connected through the power supply positive input terminal of twelfth resistor R12 and power interface,
The power supply negative input end of the anode of the 8th diode D8 and power interface connects, the anode of the 9th diode D9 and the
The power supply positive input terminal of the cathode power interface of eight diode D8 connects, the cathode and the 8th diode of the 9th diode D9
The power supply negative input end of the anode supply interface of D8 connects, and the anode of the tenth diode D10 and the power supply of power interface are just
Input terminal connects, and the cathode of the tenth diode D10 connects through the power supply negative input end of thirteenth resistor R13 and power interface
It connecing, the cathode of the 11st diode D11 is connect with the power supply positive input terminal of the anode supply interface of the tenth diode D10,
The anode of the 11st diode D11 is connect with the power supply negative input end of the cathode power interface of the tenth diode D10.End
When examination electric equipment 20 just connects, the tenth diode D10 shines, and the 8th diode D8 extinguishes；When 20 reversal connection of electric equipment is tried in end, the 8th
Diode D8 shines, and the tenth diode D10 extinguishes；So as to easily understand end examination electric equipment 20 whether reversal connection.
The current-limiting circuit includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the one or three pole
Pipe Q1 and silicon-controlled Q2, the 4th resistance R4 are adjustable resistance, and the emitter of the first triode Q1 is through first resistor R1
It is connect with the positive output end of bridge rectifier, the emitter of the first triode Q1 passes through second resistance R2 and third successively
It is connect with the base stage of the first triode Q after resistance R3, the collector of the first triode Q1 is described through the 4th resistance R4 ground connection
The anode of silicon-controlled Q2 is connect with the common point of second resistance R2 and 3rd resistor R3, the minus earth of the silicon-controlled Q2, institute
The grid for stating silicon-controlled Q2 is connect with the adjustable side of the 4th resistance R4.Preferably, the first triode Q1 is three pole of positive-negative-positive
Pipe.
The first state indicating circuit includes the 7th diode D7 and eleventh resistor R11, the 7th diode D7
Anode for light emitting diode, the 7th diode D7 is connect with the common point of second resistance R2 and 3rd resistor R3, described
The cathode of 7th diode D7 is connect through eleventh resistor R11 with the anode of silicon-controlled Q2.
First regulator circuit include the second triode T1, the 5th resistance R5, the 6th resistance R6, the 5th diode D5,
6th diode D6 and the first capacitance C1, the 6th diode D6 are zener diode, the base stage of the second triode T1
Through the first capacitance C1 ground connection, the emitter of the second triode T1 connects signal generating circuit and/or polarity detection circuit, described
The collector of second triode T1 is connect through the 5th resistance R5 with the base stage of the second triode T1, the 6th resistance R6 and the 5th
Resistance R5 is in parallel, and the collector of the second triode T1 is connect with the common point of second resistance R2 and 3rd resistor R3, and the 5th
The anode of diode D5 is connect with the base stage of the second triode T1, and the cathode of the 5th diode D5 connects with the anode of silicon-controlled Q2
It connects.Preferably, the model BD237 of the second triode T1.
Second regulator circuit includes voltage stabilizing chip U1, the second capacitance C2, third capacitance C3, the 4th capacitance C4, the 5th
Capacitance C5, the 6th capacitance C6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10 and inductance L, described
The anode of two capacitance C2 connects signal generating circuit and/or polarity detection circuit, the cathode ground connection of the second capacitance C2, and described the
Three capacitance C3 are in parallel with the second capacitance C2, the Enable Pin of the voltage stabilizing chip U1 through the 7th resistance R7 connect signal generating circuit and/
Or polarity detection circuit, the compensating end of the voltage stabilizing chip U1 are grounded after the 8th resistance R8 and the 4th capacitance C4 successively, institute
The simulation ground terminal and protection ground terminal for stating voltage stabilizing chip U1 are grounded, and the output end of the voltage stabilizing chip U1 connects signal production through inductance L
Raw circuit and/or polarity detection circuit, the anode of the 5th capacitance C5 connect signal generating circuit and/or polarity detection circuit,
The cathode of the 5th capacitance C5 is grounded, and the 6th capacitance C6 is in parallel with the 5th capacitance C5, one end of the 9th resistance R9
Signal generating circuit and/or polarity detection circuit are connect, the other end of the 9th resistance R9 is described through the tenth resistance R10 ground connection
The feedback end of voltage stabilizing chip U1 is connect with the common point of the 9th resistance R9 and the tenth resistance R10.Preferably, the voltage stabilizing chip U1
Model AOZ1016.
The operation principle of the present embodiment is：When initial, the first triode Q1 and silicon-controlled Q2 are turned off, at first resistor R1
When voltage increases, the first triode Q1 conductings, then so that silicon-controlled Q2 is connected, to play the role of current-limiting protection.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form is not to be taken as excluding other embodiments, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all rights appended by the utility model
It is required that protection domain in.
Claims (7)
1. DC suppling equipment line inspection instrument, which is characterized in that including separately positioned end examination electric equipment and front end signal processing
Equipment；The end examination electric equipment includes polarity detection circuit and signal generating circuit, and the polarity detection circuit and signal produce
Raw circuit is electrically connected with the feeder ear of test line, and the front end signal processing equipment includes the signal acquisition being sequentially electrically connected
Circuit, signal processing circuit and display screen, the signal acquisition circuit are also electrically connected with test line.
2. DC suppling equipment line inspection instrument according to claim 1, which is characterized in that the front end signal processing equipment block
Further include：Power supply, the power supply are electrically connected with signal acquisition circuit, signal processing circuit and display screen respectively.
3. DC suppling equipment line inspection instrument according to claim 1, which is characterized in that the signal acquisition circuit includes passing
Sensor and analog to digital conversion circuit, the sensor are electrically connected with analog to digital conversion circuit and test line respectively, the analog-to-digital conversion
Circuit is also electrically connected with signal processing circuit.
4. DC suppling equipment line inspection instrument according to claim 3, which is characterized in that the signal acquisition circuit further includes
Anti-aliasing Filter Circuits, the Anti-aliasing Filter Circuits are arranged between analog to digital conversion circuit and signal processing circuit, described anti-
Aliasing filter circuit is electrically connected with analog to digital conversion circuit and signal processing circuit respectively.
5. DC suppling equipment line inspection instrument according to claim 3, which is characterized in that the sensor is voltage sensor
Or current sensor.
6. DC suppling equipment line inspection instrument according to claim 1, which is characterized in that try electric equipment and further include in the end
The input terminal of reverse-connection preventing circuit, the reverse-connection preventing circuit is electrically connected by power interface with the output end of external dc power, institute
The output end for stating reverse-connection preventing circuit is electrically connected with the power end of polarity detection circuit and signal generating circuit respectively.
7. DC suppling equipment line inspection instrument according to claim 6, which is characterized in that the reverse-connection preventing circuit includes bridge-type
Rectification circuit, current-limiting circuit and regulator circuit, the first input end of the bridge rectifier and the power supply of power interface are just defeated
Enter end connection, the second input terminal of the bridge rectifier and the power supply negative input end of power interface connect, and the bridge-type is whole
The negative output terminal of current circuit is grounded, the positive output end of the bridge rectifier respectively with current-limiting circuit, signal generating circuit and/
Or the power end connection of polarity detection circuit, the output end of the current-limiting circuit and the input terminal of regulator circuit connect, it is described steady
Volt circuit is also electrically connected with signal generating circuit and/or polarity detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721848346.2U CN207662985U (en) | 2017-12-26 | 2017-12-26 | DC suppling equipment line inspection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721848346.2U CN207662985U (en) | 2017-12-26 | 2017-12-26 | DC suppling equipment line inspection instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207662985U true CN207662985U (en) | 2018-07-27 |
Family
ID=62943167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721848346.2U Expired - Fee Related CN207662985U (en) | 2017-12-26 | 2017-12-26 | DC suppling equipment line inspection instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207662985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976599A (en) * | 2017-12-26 | 2018-05-01 | 四川永胜航空电源有限公司 | DC suppling equipment line inspection instrument |
-
2017
- 2017-12-26 CN CN201721848346.2U patent/CN207662985U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976599A (en) * | 2017-12-26 | 2018-05-01 | 四川永胜航空电源有限公司 | DC suppling equipment line inspection instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200305 Address after: 526000 Decheng industrial intensive base, Deqing County, Zhaoqing City, Guangdong Province Patentee after: Guangdong Deqing Electric Meter Manufacturing Co.,Ltd. Address before: 610000 Sichuan Chengdu Pixian Chengdu modern industrial port north area Hong Kong Tong North 3 Road No. 523 Patentee before: SICHUAN YONGSHENG AVIATION POWER SUPPLY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180727 Termination date: 20211226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |