CN106291317B - A kind of track circuit shunting parameter intelligent tester and its implementation - Google Patents
A kind of track circuit shunting parameter intelligent tester and its implementation Download PDFInfo
- Publication number
- CN106291317B CN106291317B CN201610609221.8A CN201610609221A CN106291317B CN 106291317 B CN106291317 B CN 106291317B CN 201610609221 A CN201610609221 A CN 201610609221A CN 106291317 B CN106291317 B CN 106291317B
- Authority
- CN
- China
- Prior art keywords
- rail
- hand
- copper
- track circuit
- tooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Abstract
The present invention relates to a kind of track circuit shunting parameter intelligent tester and its test methods, including the hand-held tooling coincideing with rail rail level shape, and the test instrumentation connected with the contact copper sheet of hand-held tooling by copper conductor.Hand-held tooling is made of three parts, integrated oversheath with handles, the contact copper sheet for having identical arc with rail rail level, derusting filing board；The contact copper sheet of hand-held tooling draws a copper conductor；Housings of the instrument mounted in customization, two copper posts of shell top position installation, copper post are connect in shell rear surface with copper conductor；After instrument puts into housings, branch electric signal can be effectively obtained by two copper posts, with carrying out operation automatically according to electric signal.Technical solution provided by the invention not only can solve the problem of rail is because of corrosion test equipment poor contact, but also efficiently convenient can test the rail surface voltage between two rail and the branch current after two rail branches.
Description
Technical field
The present invention relates to track circuit testing instrument, and in particular to a kind of track circuit shunting parameter intelligent tester and in fact
Existing method.
Background technique
Track circuit is the circuit collectively formed by track circuit system equipment and steel rail line, track circuit system equipment
A complete circuit is constituted by steel rail line, track-circuit signalling is passed into train by rail, controls train in iron
Route road travels or stops at different rates.
In order to ensure track-circuit signalling can test the track-circuit signalling on steel rail line by train reliable reception
It is necessary.Including mainly two rail between the track-circuit signalling test on steel rail line rail surface voltage test and
The test of branch current after two rail branches.
Carry out testing track circuit parameters at present and be primarily present two problems: 1. since steel rail line exposes in air,
Surface oxidation, corrosion, thus carry out rail level test or when branch testing often therefore reason and lead to test result not
Accurately；2. the branch resistance value between two rail requires to be 0.15 Ω or 0.25 Ω, current branch testing work according to railway standard
Fill simple and crude, resistance error is big, is difficult to meet standard requirements, and inconvenient, working efficiency is low, and measuring accuracy is poor.
Summary of the invention
To solve above-mentioned deficiency of the prior art, the object of the present invention is to provide a kind of track circuit shunting parameter intelligents
Tester and its implementation.
The purpose of the present invention is adopt the following technical solutions realization:
The present invention relates to a kind of track circuit shunting parameter intelligent testers, it is improved in that the tester packet
Include the hand-held tooling coincideing with rail rail level shape, and the tester connected with the contact copper sheet of hand-held tooling by copper conductor
Table；
The hand-held tooling include integrated oversheath with handles, the contact copper sheet for having with rail rail level identical arc and
A pair of derusting filing board；The integrated oversheath with handles is inverted U, and it is with handles outer that the contact copper sheet is fitted in inverted U
The inside of sheath, the pair of derusting filing board are symmetricly set on the upper end of the inside of inverted U oversheath with handles and the filing board that derusts
With the end thereof contacts of contact copper sheet.
Further, in test, the hand-held tooling is mounted on rail from top to bottom, holds tooling toward under rail
When traveling, derusting filing board is used for rail grinding rail level two sides rusty scale, contact copper sheet and two side contacts of rail rail level or rail level.
Further, the test instrumentation includes the instrument of shell and installation inside the shell, is installed in the top of shell
There are two copper posts, two copper posts are connect in shell rear surface with copper conductor；Instrument can effectively be obtained by two copper posts divides
Road electric signal carries out operation according to electric signal automatically.
Further, the instrument includes showing and controlling touch screen, central processor CPU, gate circuit and current sense
Device；The display and control touch screen, gate circuit and current sensor are connect with central processor CPU.
Further, the I/O pin of the central processor CPU is connect with a copper post；The gate circuit includes four
I/O pin, one of I/O pin are connect with another copper post；Other three I/O pins are respectively connected with the electricity of different resistance values
Resistance, the resistor coupled in parallel of the difference resistance value.
Further, the current sensor and central processor CPU are grounded.
Further, the display and control touch screen have the function of screenshotss and can add remark information.
The present invention provides a kind of test method of track circuit shunting parameter intelligent tester, it is improved in that institute
The method of stating includes the following steps:
(1) after installing hand-held tooling, self-checking command is selected, instrument automatically analyzes hand-held tooling and contacts feelings with two rail
Condition calculates short circuit value within 0-0.01 Ω, indicates that contact is good；
(2) calculate open-circuit condition rail rail surface voltage, track circuit carrier frequency and Frequency；
(3) three I/O pins of gate circuit by 1 conductor in parallel three different resistance values resistance, according to test needs,
Instruction is assigned at display and control touch screen, selects one of resistance；
(4) after selecting, the automatic branch current value for carrying out track circuit center carrier frequence is calculated, and is simultaneously displayed under rate
The branch current value of track circuit center carrier frequence.
Further, in the step (2), track circuit center carrier frequence include for 1700Hz, 2000Hz, 2300Hz and
2600Hz；Low frequency has 18 kinds, is 10.3+n*1.1, n=0 to 17, and by the rail surface voltage of track circuit center carrier frequence, low frequency value
It is simultaneously displayed on display and control touch screen, tester is made to obtain the rail surface voltage value and low under track circuit center carrier frequence
Frequency is worth.
In order to which some aspects of the embodiment to disclosure have a basic understanding, simple summary is shown below.It should
Summarized section is not extensive overview, nor to determine key/critical component or describe the protection scope of these embodiments.
Its sole purpose is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
Compared with the immediate prior art, the excellent effect that technical solution provided by the invention has is:
The present invention in view of the deficiencies of the prior art, not only can solve the problem of rail is because of corrosion test equipment poor contact, but also
Efficiently convenient it can test the rail surface voltage between two rail and the branch current after two rail branches.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
Fig. 1 is the overall schematic of hand-held tooling 1 provided by the invention；
Fig. 2 is the schematic diagram of integrated oversheath 11 with handles provided by the invention；
Fig. 3 is the schematic diagram of contact copper sheet 12 provided by the invention；
Fig. 4 is the schematic diagram of derusting filing board 13 provided by the invention；
Fig. 5 is rail interface figure provided by the invention；
Fig. 6 is tester overall schematic provided by the invention；
Fig. 7 is the internal structure chart of instrument 21 provided by the invention.
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual component and function are optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.Herein, these embodiments of the invention can individually or generally be indicated that this is only with term " invention "
For convenience, and if in fact disclosing the invention more than one, the range for being not meant to automatically limit the application is to appoint
What single invention or inventive concept.
It is provided by the invention to solve the problems, such as rail because corroding test equipment poor contact.Test at present is general all with test
Test pencil contacts rail level, and the pen tip area of test pencil is very small, and test pencil bears that pressure is small, and the design is using a kind of special hand
Tooling 1 is held to substitute test test pencil.Hand-held tooling 1 is made of three parts, integrated oversheath 11 with handles and rail rail level
There are contact copper sheet 12, a pair of of the derusting filing board 13 of identical arc, it is as shown in Figs 1-4 respectively: integrated oversheath 11 with handles
For inverted U, the inside that copper sheet 12 is fitted in inverted U oversheath 11 with handles is contacted, a pair of derusting filing board 13 is symmetricly set on down U
The end thereof contacts of the upper end and contact copper sheet 12 of the inside of type oversheath 11 with handles and the filing board 13 that derusts.
Principle: the hand-held tooling 1 is coincide with rail profile, when test, holds handle, by hand-held tooling 1 from upper
It presses down onto rail, as shown in figure 5, hand-held tooling, when advancing down, derusting filing board 13 can effective rail grinding
Rail level two sides rusty scale, contact 12 area of copper sheet is larger, either rail level or rail level two sides, as long as there is a point contact good
Reach good contact effect, and the rail level two sides iron mold that can polish repeatedly, contact of the contact-enhancing copper sheet 12 with rail level
Effect.
The method for solving branch: test instrumentation 2 includes the instrument 21 of shell 22 and installation inside the shell, holds tooling 1
Contact copper sheet draw a copper conductor；A instrument is designed, instrument is mounted in 22 the inside of shell of customization, 22 top position of shell
Two copper posts are installed, copper post is connect at 22 back side of shell with copper conductor；After instrument puts into 22 the inside of shell, two copper can be passed through
Column 23 effectively obtains branch electric signal, with carrying out operation automatically according to electric signal, as shown in Figure 6.
The internal structure chart of instrument 21 as shown in fig. 7, instrument 21 include show and control touch screen, central processor CPU,
Gate circuit and current sensor；The display and control touch screen, gate circuit and current sensor connect with central processor CPU
It connects.The I/O pin of central processor CPU is connect with a copper post；The gate circuit includes four I/O pins, one of I/O
Pin is connect with another copper post；Other three I/O pins are respectively connected with the resistance of different resistance values, the resistance of the difference resistance value
It is in parallel.Current sensor and central processor CPU are grounded.
The present invention provides a kind of test method of track circuit shunting parameter intelligent tester, includes the following steps:
1, after installing branch tooling, self-checking command is selected, instrument automatically analyzes branch tooling and contacts feelings with two rail
Condition calculates short circuit value within 0-0.01 Ω, indicates that contact is good；
Calculate open-circuit condition rail surface voltage, track circuit carrier frequency and Frequency.Track circuit center carrier frequence has 4 kinds, point
It Wei not 1700Hz, 2000Hz, 2300Hz and 2600Hz；Low frequency has 18 kinds, is 10.3+n*1.1 (n=0 to 17), and 4 kinds are carried
The rail surface voltage of frequency, low frequency value are simultaneously displayed on display screen, the rail surface voltage value for being apparent from tester under 4 kinds of carrier frequency
And low frequency value is respectively how many.
Prompt can carry out next step test after the completion of the above operation.
2, as shown in fig. 7,1 conductor in parallel, three resistance, are 0 Ω, 0.15 Ω and 0.25 Ω respectively, according to test need
It wants, assigns instruction at touch screen showing and controlling, select one in 0.15 Ω or 0.25 Ω.
3, after selecting, the automatic branch current value for carrying out 4 kinds of carrier frequency is calculated, and is simultaneously displayed under this 4 kinds of frequencies
Branch current value.
4, it shows and controls touch screen and be equipped with screenshotss preservation function, and remark information can be added.
Intelligent tester structure provided by the invention is simple, has both solved rail asking because of corrosion test equipment poor contact
Topic, and the rail surface voltage between two rail and the branch current after two rail branches efficiently convenient can be tested, testing efficiency is high,
Save time and cost.
It should be understood that the particular order or level of the step of during disclosed are the examples of illustrative methods.Based on setting
Count preference, it should be appreciated that in the process the step of particular order or level can be in the feelings for the protection scope for not departing from the disclosure
It is rearranged under condition.Appended claim to a method is not illustratively sequentially to give the element of various steps, and not
It is to be limited to the particular order or level.
In above-mentioned detailed description, various features are combined together in single embodiment, to simplify the disclosure.No
This published method should be construed to reflect such intention, that is, the embodiment of theme claimed needs clear
The more features of the feature stated in each claim to Chu.On the contrary, that reflected such as appended claims
Sample, the present invention are in the state fewer than whole features of disclosed single embodiment.Therefore, appended claims is special
This is expressly incorporated into detailed description, and wherein each claim is used as alone the individual preferred embodiment of the present invention.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, and those of ordinary skill in the art still can be to this hair
Bright specific embodiment is modified or replaced equivalently, these without departing from spirit and scope of the invention any modification or
Equivalent replacement, within the scope of the claims of the invention pending application.
Claims (5)
1. a kind of track circuit shunting parameter intelligent tester, which is characterized in that the tester includes and rail rail level shape
Identical hand-held tooling, and the test instrumentation connected with the contact copper sheet of hand-held tooling by copper conductor；
The hand-held tooling includes integrated oversheath with handles, the contact copper sheet and a pair for having with rail rail level identical arc
Derust filing board；The integrated oversheath with handles is inverted U, and the contact copper sheet is fitted in inverted U oversheath with handles
Inside, it is the pair of derusting filing board be symmetricly set on inverted U oversheath with handles inside and derust filing board upper end with connect
Touch the end thereof contacts of copper sheet；
The test instrumentation includes the instrument of shell and installation inside the shell, and two copper posts, institute are equipped with above shell
Two copper posts are stated to connect in shell rear surface with copper conductor；Instrument can effectively obtain branch electric signal by two copper posts, according to
Electric signal carries out operation automatically；
The instrument includes showing and controlling touch screen, central processor CPU, gate circuit and current sensor；It is described display and
Control touch screen, gate circuit and current sensor are connect with central processor CPU；The display and control touch screen, which have, to be cut
Shield function and remark information can be added；
The I/O pin of the central processor CPU is connect with a copper post；The gate circuit includes four I/O pins, wherein one
A I/O pin is connect with another copper post；Other three I/O pins are respectively connected with the resistance of different resistance values, the difference resistance value
Resistor coupled in parallel；
After installing hand-held tooling, self-checking command is selected, the instrument can automatically analyze hand-held tooling and contact with two rail
Situation calculates short circuit value within 0-0.01 Ω, indicates that contact is good；And calculate open-circuit condition rail rail surface voltage, track electricity
Road-load frequency and Frequency；And the automatic branch current value for carrying out track circuit center carrier frequence calculates, while showing track electricity
Branch current value under Lu Zhizheng carrier frequency.
2. track circuit shunting parameter intelligent tester as described in claim 1, which is characterized in that in test, the hand
It holds tooling to be mounted on rail from top to bottom, for hand-held tooling when toward advancing under rail, derusting filing board is for rail grinding
Rail level two sides rusty scale, contact copper sheet and two side contacts of rail rail level or rail level.
3. track circuit shunting parameter intelligent tester as described in claim 1, which is characterized in that the current sensor and
Central processor CPU is grounded.
4. a kind of test method of track circuit shunting parameter intelligent tester as claimed in any one of claims 1-3,
It is characterized in that, the method includes the following steps:
(1) after installing hand-held tooling, self-checking command is selected, instrument automatically analyzes hand-held tooling and contacts situation with two rail,
Short circuit value is calculated within 0-0.01 Ω, indicates that contact is good；
(2) calculate open-circuit condition rail rail surface voltage, track circuit carrier frequency and Frequency；
(3) three I/O pins of gate circuit are being shown by the resistance of 1 conductor in parallel three different resistance value according to test needs
And instruction is assigned at control touch screen, select one of resistance；
(4) after selecting, the automatic branch current value for carrying out track circuit center carrier frequence is calculated, while showing in track circuit
Branch current value under heart carrier frequency.
5. test method as claimed in claim 4, which is characterized in that in the step (2), track circuit center carrier frequence includes
For 1700Hz, 2000Hz, 2300Hz and 2600Hz；Low frequency has 18 kinds, is 10.3+n*1.1, n=0 to 17, and by track circuit
The rail surface voltage of center carrier frequence, low frequency value are simultaneously displayed on display and control touch screen, and tester is made to obtain track circuit
Rail surface voltage value and low frequency value under center carrier frequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610609221.8A CN106291317B (en) | 2016-07-28 | 2016-07-28 | A kind of track circuit shunting parameter intelligent tester and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610609221.8A CN106291317B (en) | 2016-07-28 | 2016-07-28 | A kind of track circuit shunting parameter intelligent tester and its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106291317A CN106291317A (en) | 2017-01-04 |
| CN106291317B true CN106291317B (en) | 2019-06-04 |
Family
ID=57663119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610609221.8A Expired - Fee Related CN106291317B (en) | 2016-07-28 | 2016-07-28 | A kind of track circuit shunting parameter intelligent tester and its implementation |
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| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2463263Y (en) * | 2001-02-13 | 2001-12-05 | 李荣贵 | Magnetic attractive track circuit residual compression testiong standard line-separating device |
| CN2573340Y (en) * | 2002-10-23 | 2003-09-17 | 佟元江 | Magnetic adsorption rail circuit testing device |
| CN201224415Y (en) * | 2008-05-21 | 2009-04-22 | 西安铁路局西安电务器材厂 | Constant-pressure tester for track circuit shunting residual pressure |
| CN201808580U (en) * | 2010-10-11 | 2011-04-27 | 南昌铁路局南昌通信信号厂 | Rapid turning type emergent unload steel rail clamp |
| CN202853812U (en) * | 2012-10-19 | 2013-04-03 | 陕西正信铁路器材有限公司 | Simulation type track circuit shunt residual voltage tester |
| CN203148982U (en) * | 2013-04-03 | 2013-08-21 | 国家电网公司 | Test fixture for loop resistance of circuit breaker |
| CN203832512U (en) * | 2014-05-23 | 2014-09-17 | 王国瑛 | Field axle-counting short-circuit steel rail type track circuit shunting system |
| CN105015562A (en) * | 2015-07-21 | 2015-11-04 | 南车青岛四方机车车辆股份有限公司 | Control method for grounding resistor of rail vehicle and grounding plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6664778B2 (en) * | 2001-05-22 | 2003-12-16 | Agilent Technologies, Inc. | Circuit board coupon tester |
| CN102095896B (en) * | 2010-11-20 | 2013-05-08 | 太原理工大学 | Portable intelligent speedometer tester and using method thereof |
| CN103577309A (en) * | 2012-07-25 | 2014-02-12 | 腾讯科技（深圳）有限公司 | Automatic test method and device |
| CN102866311A (en) * | 2012-08-21 | 2013-01-09 | 深圳市科威电子测试有限公司 | Method and device for testing lightning protection component |
| CN103167080A (en) * | 2013-02-04 | 2013-06-19 | 北京大友迅捷科技有限公司 | System and method of testing functions of main board of mobile phone |
-
2016
- 2016-07-28 CN CN201610609221.8A patent/CN106291317B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2463263Y (en) * | 2001-02-13 | 2001-12-05 | 李荣贵 | Magnetic attractive track circuit residual compression testiong standard line-separating device |
| CN2573340Y (en) * | 2002-10-23 | 2003-09-17 | 佟元江 | Magnetic adsorption rail circuit testing device |
| CN201224415Y (en) * | 2008-05-21 | 2009-04-22 | 西安铁路局西安电务器材厂 | Constant-pressure tester for track circuit shunting residual pressure |
| CN201808580U (en) * | 2010-10-11 | 2011-04-27 | 南昌铁路局南昌通信信号厂 | Rapid turning type emergent unload steel rail clamp |
| CN202853812U (en) * | 2012-10-19 | 2013-04-03 | 陕西正信铁路器材有限公司 | Simulation type track circuit shunt residual voltage tester |
| CN203148982U (en) * | 2013-04-03 | 2013-08-21 | 国家电网公司 | Test fixture for loop resistance of circuit breaker |
| CN203832512U (en) * | 2014-05-23 | 2014-09-17 | 王国瑛 | Field axle-counting short-circuit steel rail type track circuit shunting system |
| CN105015562A (en) * | 2015-07-21 | 2015-11-04 | 南车青岛四方机车车辆股份有限公司 | Control method for grounding resistor of rail vehicle and grounding plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106291317A (en) | 2017-01-04 |
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Granted publication date: 20190604 Termination date: 20200728 |