CN206300652U - Contact net hard spot sensor - Google Patents
Contact net hard spot sensor Download PDFInfo
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- CN206300652U CN206300652U CN201621435133.2U CN201621435133U CN206300652U CN 206300652 U CN206300652 U CN 206300652U CN 201621435133 U CN201621435133 U CN 201621435133U CN 206300652 U CN206300652 U CN 206300652U
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- amplifier
- chip microcomputer
- hard spot
- negative input
- resistance
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Abstract
The utility model discloses a kind of contact net hard spot sensor, including the acceleration transducer, amplifying circuit, voltage-frequency converter, photo-coupler and the single-chip microcomputer that are sequentially connected, and GPS locator, power subsystem, memory cell, hard spot signal output interface and the display unit being connected with single-chip microcomputer respectively.The sensor gathers the acceleration signal of bow net support by acceleration transducer, the acceleration signal for collecting is by amplifying, A/D is sent to single-chip microcomputer after changing, the acceleration signal that single-chip microcomputer will be received is compared with predetermined threshold value, judge acceleration signal value whether in preset threshold range, if exceeding threshold range, then record now acceleration signal value and coordinate subsequently to be investigated in respective range in order to staff, to improve detection efficiency and accuracy of detection.
Description
Technical field
The utility model is related to a kind of contact net hard spot sensor.
Background technology
With the continuous improvement of China's train speed per hour, the security of train pantograph seems important all the more.And contact net is hard
Point is then the persistent ailment for influenceing train traction pantograph net current carrying quality all the time.Contact net hard spot is locomotive logical in high-speed cruising
Out-of-date, the place that the contact force of pantograph and contact net changes suddenly by external force is a kind of physical phenomenon for having a threat, it
The normal contact between bow net can be destroyed and flowed, accelerate abnormal wear and the impact infringement of wire and pantograph pan, Chang
Cause spark or arcing, or even damaging contact line and pantograph in these positions.
And the current stage, the mode that train bow net hard spot detection means obtains contact net hard spot is mostly by basis in device
Indoor test acceleration hard spot threshold value and the spring leaf of preset clearance run into it is hard more than or equal to corresponding given threshold
Point when, by external force make its closure with contact point is formed loop trigger hard spot signal, or using single-axis accelerometer carry out single point to
Acceleration rate threshold detection judges hard spot.But both the above bow net hard spot detection mode all has hard spot and detects inaccurate, easy
The shortcomings such as false triggering, equipment detection consistency of performance difference.
Utility model content
The purpose of this utility model is to provide a kind of contact net hard spot sensor, inaccurate to solve existing hard spot detection
Problem.
In order to solve the above technical problems, a kind of contact net hard spot sensor of the utility model offer, including be sequentially connected
Acceleration transducer, amplifying circuit, voltage-frequency converter, photo-coupler and single-chip microcomputer, and the GPS being connected with single-chip microcomputer respectively are fixed
Position device, power subsystem, memory cell, hard spot signal output interface and display unit.
Amplifying circuit includes the first amplifier A1, the second amplifier A2 and the 3rd amplifier A3；First amplifier A1 is just
Input is connected to acceleration transducer by first resistor R1；The negative input end of the first amplifier A1 is connect by second resistance R2
Ground, the negative input end of the first amplifier A1 is connected to the output end of the second amplifier A2 by 3rd resistor R3；Second amplifier
The positive input terminal of A2 is connected with the positive input terminal of the 3rd amplifier A3；The negative input end of the second amplifier A2 passes through the 5th resistance R5
Ground connection, the negative input end of the second amplifier A2 is connected to the output end of the second amplifier A2 by first switch diode D1, the
The negative input end of two amplifier A2 passes through the 4th resistance R4 being sequentially connected and second switch diode D2 is connected to the second amplification
The output end of device A2；The negative input end of the 3rd amplifier A3 is connected to the 4th resistance R4 and the pole of second switch two by the 6th resistance
Between pipe D2, the negative input end of the 3rd amplifier A3 is connected to the output end of the 3rd amplifier A3 by the 7th resistance R7；3rd
The output end of amplifier A3 is connected to voltage-frequency converter.
Further, power subsystem include main battery and reserce cell, main battery respectively with start control unit and monolithic
Machine is connected, and start control unit is respectively connecting to Hall sensor and single-chip microcomputer；Reserce cell by back up electric charhing unit with
Single-chip microcomputer is connected, and the input of reserce cell is connected with the electric charhing unit of backup.
Further, voltage-frequency converter is AD654 chips.
The beneficial effects of the utility model are：The sensor is arranged on detection car when using passes through acceleration transducer
The acceleration signal of bow net support is gathered, the acceleration signal for collecting is by amplifying, A/D is sent to single-chip microcomputer after changing, single
Whether the acceleration signal that piece machine will be received is compared with predetermined threshold value, judge acceleration signal value in preset threshold range
It is interior, if exceed threshold range, it is determined that hard spot position, record now acceleration signal value and corresponding coordinate in order to work
Make personnel subsequently carries out carefully making an inspection tour investigation in respective range, to improve detection efficiency and accuracy of detection.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment；
Fig. 2 is the structural representation of the amplifying circuit of the utility model one embodiment；
Fig. 3 is the structural representation of the power subsystem of the utility model one embodiment.
Specific embodiment
Specific embodiment of the present utility model is described below, is understood in order to those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the scope of specific embodiment, to the common skill of the art
For art personnel, as long as various change is in appended claim restriction and the spirit and scope of the present utility model for determining,
These changes are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
Contact net hard spot sensor as shown in Figure 1, including acceleration transducer, amplifying circuit, the voltage-frequency being sequentially connected
Converter, photo-coupler and single-chip microcomputer, and the GPS locator, power subsystem, memory cell, hard being connected with single-chip microcomputer respectively
Point signal output interface and display unit.
As shown in Fig. 2 amplifying circuit includes the first amplifier A1, the second amplifier A2 and the 3rd amplifier A3；First puts
The positive input terminal of big device A1 is connected to acceleration transducer by first resistor R1；The negative input end of the first amplifier A1 is by the
Two resistance R2 are grounded, and the negative input end of the first amplifier A1 is connected to the output end of the second amplifier A2 by 3rd resistor R3；
The positive input terminal of the second amplifier A2 is connected with the positive input terminal of the 3rd amplifier A3；The negative input end of the second amplifier A2 passes through
5th resistance R5 is grounded, and the negative input end of the second amplifier A2 is connected to the second amplifier A2's by first switch diode D1
Output end, the negative input end of the second amplifier A2 passes through the 4th resistance R4 being sequentially connected and second switch diode D2 is connected to
The output end of the second amplifier A2；The negative input end of the 3rd amplifier A3 is connected to the 4th resistance R4 and second by the 6th resistance
Between switching diode D2, the negative input end of the 3rd amplifier A3 is connected to the output of the 3rd amplifier A3 by the 7th resistance R7
End；The output end of the 3rd amplifier A3 is connected to voltage-frequency converter.Wherein, above-mentioned amplifier uses OP07A chips, and this is put
Big circuit has high accuracy, low drifting and antistatic effect, it is ensured that the accuracy of collection signal.
The sensor gathers the acceleration signal of bow net support by acceleration transducer, the acceleration signal warp for collecting
Single-chip microcomputer is sent to after crossing amplification, A/D conversions, the acceleration signal that single-chip microcomputer will be received is compared with predetermined threshold value, judges
Go out acceleration signal value whether in preset threshold range, if exceeding threshold range, record now acceleration signal value and seat
It is marked with and is easy to staff subsequently to be investigated in respective range, improves detection efficiency and accuracy of detection.Wherein single-chip microcomputer
Specifically compare calculating process for prior art, no longer describe in detail herein.
As shown in figure 3, power subsystem include main battery and reserce cell, main battery respectively with start control unit and monolithic
Machine is connected, and start control unit is respectively connecting to Hall sensor and single-chip microcomputer；Reserce cell by back up electric charhing unit with
Single-chip microcomputer is connected, and the input of reserce cell is connected with the electric charhing unit of backup.Wherein, main battery is the power supply source of system；When
During main battery power down, then switch reserce cell for single-chip microcomputer is powered.Start control unit is connected with main battery and Hall sensor,
The instruction of main battery and Hall sensor is received, for the start of single-chip microcomputer.In the course of the work, when main battery power down, can
Automatic switchover reserce cell is system power supply, keeps system internal storage data stable storage, prevents loss of data.
Voltage-frequency converter can use AD654 chips, a RC network be only needed to when using, it is possible to produce tall and big 500KHz
Any full scale -30V to 30V full scale input.
Claims (3)
1. a kind of contact net hard spot sensor, it is characterised in that including the acceleration transducer, amplifying circuit, the pressure that are sequentially connected
Frequency converter, photo-coupler and single-chip microcomputer, and GPS locator, power subsystem, the storage list being connected with the single-chip microcomputer respectively
Unit, hard spot signal output interface and display unit；
The amplifying circuit includes the first amplifier A1, the second amplifier A2 and the 3rd amplifier A3；The first amplifier A1
Positive input terminal acceleration transducer is connected to by first resistor R1；The negative input end of the first amplifier A1 passes through second resistance
R2 is grounded, and the negative input end of the first amplifier A1 is connected to the output end of the second amplifier A2 by 3rd resistor R3；Described
The positive input terminal of two amplifier A2 is connected with the positive input terminal of the 3rd amplifier A3；The negative input end of the second amplifier A2 is by the
Five resistance R5 are grounded, and the negative input end of the second amplifier A2 is connected to the defeated of the second amplifier A2 by first switch diode D1
Go out end, the negative input end of the second amplifier A2 passes through the 4th resistance R4 being sequentially connected and second switch diode D2 and is connected to the
The output end of two amplifier A2；The negative input end of the 3rd amplifier A3 is connected to the 4th resistance R4 and by the 6th resistance
Between two switching diode D2, the negative input end of the 3rd amplifier A3 is connected to the defeated of the 3rd amplifier A3 by the 7th resistance R7
Go out end；The output end of the 3rd amplifier A3 is connected to the voltage-frequency converter.
2. contact net hard spot sensor according to claim 1, it is characterised in that the power subsystem include main battery and
Reserce cell, the main battery is connected with start control unit and the single-chip microcomputer respectively, and the start control unit connects respectively
It is connected to Hall sensor and the single-chip microcomputer；The reserce cell is connected by backing up electric charhing unit with single-chip microcomputer, backup electricity
The input in pond is connected with the electric charhing unit of backup.
3. contact net hard spot sensor according to claim 1, it is characterised in that the voltage-frequency converter is AD654 cores
Piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435133.2U CN206300652U (en) | 2016-12-26 | 2016-12-26 | Contact net hard spot sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435133.2U CN206300652U (en) | 2016-12-26 | 2016-12-26 | Contact net hard spot sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206300652U true CN206300652U (en) | 2017-07-04 |
Family
ID=59204111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621435133.2U Active CN206300652U (en) | 2016-12-26 | 2016-12-26 | Contact net hard spot sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206300652U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918173A (en) * | 2018-07-26 | 2018-11-30 | 唐智科技湖南发展有限公司 | A kind of method and system detecting pantograph or cable failure |
| CN109000729A (en) * | 2018-07-31 | 2018-12-14 | 广州科易光电技术有限公司 | Vehicle-mounted contact net condition monitoring system |
-
2016
- 2016-12-26 CN CN201621435133.2U patent/CN206300652U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918173A (en) * | 2018-07-26 | 2018-11-30 | 唐智科技湖南发展有限公司 | A kind of method and system detecting pantograph or cable failure |
| CN109000729A (en) * | 2018-07-31 | 2018-12-14 | 广州科易光电技术有限公司 | Vehicle-mounted contact net condition monitoring system |
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