CN108761317A - Resistance-capacitance box with direct current track switch indication circuit working state monitoring - Google Patents
Resistance-capacitance box with direct current track switch indication circuit working state monitoring Download PDFInfo
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- CN108761317A CN108761317A CN201810847826.XA CN201810847826A CN108761317A CN 108761317 A CN108761317 A CN 108761317A CN 201810847826 A CN201810847826 A CN 201810847826A CN 108761317 A CN108761317 A CN 108761317A
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- resistance
- current sensor
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- 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
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
-
- 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
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- 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
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2843—In-circuit-testing
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a kind of resistance-capacitance boxes with direct current track switch indication circuit working state monitoring；There are resistance loop and capacitor loop, there are one resistance in resistance loop, one end of resistance is connect across the first current sensor with first terminal, the other end of resistance is connect with Second terminal, there are one capacitances in capacitor loop, one end of capacitance is connect across the second current sensor with third terminal, the other end of capacitance is connect with forth terminal, the signal of first current sensor and second current sensor is respectively delivered to the first signal condition unit and second signal conditioning unit, signal is transferred to microprocessing unit by the first A/D converting units and the 2nd A/D converting units respectively after the first signal condition unit and the conditioning of second signal conditioning unit.It is still a blank that the present invention, which solves the problems, such as that the state of each element for influencing direct current track switch indication circuit work quality is monitored and carries out switch location judgement by signal analysis mode,.
Description
Technical field
The present invention relates to railway signals equipment monitoring technical fields, especially a kind of to work with direct current track switch indication circuit
The resistance-capacitance box of status monitoring.
Background technology
Higher and higher to the requirement of railway security Effec-tive Function with the high speed development of China railways, railway signals equipment exists
Play the part of very important role in entire railway operation, a slight hitch is possible to driving order is made to be disturbed, safety
It cannot be guaranteed.The mode inspected periodically and replaced generally is taken for the maintenance of railway signals equipment at present, and was being run
State in journey is unknown, then due in Machine Room railway signals equipment type, quantity all compare it is more, even if equipment occurs
Failure also more difficult lookup, this allows for substantially reducing the efficiency of troubleshooting.Railway turnout indicating circuit is for reflecting
The open position of trouble by expression relay, transformer, indicates the structures such as diode, resistance, capacitance, goat contact, cable run
At work quality directly affects driving order and traffic safety.At present for the monitoring of indication circuit generally by relay
Device means that circuit is logical when relay is closed, is not closed when relay, means that circuit breaker come what is realized；And for influencing
Such as resistance of indication circuit work quality, capacitance, diode, cable run element status monitoring and pass through signal analysis side
It is still a blank that formula, which carries out switch location judgement,.
Invention content
The object of the present invention is to provide a kind of resistance-capacitance box with direct current track switch indication circuit working state monitoring, it can be with
It solves the status monitoring to influencing such as resistance of indication circuit work quality, capacitance, diode, cable run element and passes through
Signal analysis mode carries out the problem of switch location judgement is still a blank.
To solve the above-mentioned problems, the technical solution adopted by the present invention is：It is this to work with direct current track switch indication circuit
The resistance-capacitance box of status monitoring, there are one resistance loop and a capacitor loop, there are one resistance, the electricity in the resistance loop
One end of resistance is connect across the first current sensor with first terminal, and the other end of resistance is connect with Second terminal, the capacitance
There are one capacitance in circuit, one end of the capacitance is connect across the second current sensor with third terminal, the capacitance it is another
One end is connect with forth terminal, and the signal of first current sensor and second current sensor is respectively delivered to first
Signal condition unit and second signal conditioning unit, the signal is through first signal condition unit and the second signal tune
Microprocessing unit is transferred to by the first A/D converting units and the 2nd A/D converting units respectively after reason unit conditioning.
In above-mentioned technical proposal, more specifically scheme can also be：There are two the resistance loops, is respectively equipped with first
It is connect with the 5th terminal after one end parallel connection of resistance and second resistance, the first resistor and second resistance, the first resistor
It is connect with the 6th terminal after being each passed through the first current sensor and third current sensor parallel connection with the other end of second resistance.
Further：First current sensor and second current sensor and third current sensor are electric current
Mutual inductor or Hall current sensor it is any.
Further：The microprocessing unit is also associated with display unit, communication module and alarm unit.
By adopting the above-described technical solution, compared with prior art, the present invention having an advantageous effect in that：Due to this hair
It is bright to be equipped with current sensor, so the present invention can be monitored the electric current in indication circuit, by the electric current in circuit
It is monitored and the element such as resistance, capacitance for influencing to be easy to happen deterioration in indication circuit is differentiated, to influencing work quality
Element such as resistance, capacitance, diode, cable run etc. status monitoring and pass through signal analysis mode carry out switch location therefore
The judgement of barrier, to realize the positioning of switch indication fault, the normal use of fast and easy handling failure restorer subtracts
Few failure delay.It realizes that switch indication circuit related device is repaiied by failure, periodically wheel is revised as status maintenance, improves the available of equipment
Property, reliability, reduce manpower and materials waste, improve labor productivity, mitigate the safe pressure of maintenance personnel, improve railway fortune
Defeated efficiency ensures traffic safety.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of embodiment 1.
Fig. 2 is the circuit theory schematic diagram of embodiment 2.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples：
Embodiment 1
Resistance-capacitance box shown in FIG. 1 with direct current track switch indication circuit working state monitoring, there are one resistance loop and an electricity
Hold circuit, there are one resistance R in resistance loop, and one end of resistance R passes through first terminal and two poles across the first current sensor
The anode of pipe Z connects, and there are one capacitance C in capacitor loop, and one end of capacitance C passes through third terminal across the second current sensor
It is connect respectively with one end of DB1 grade of relay DBJ and transformer, the other end of capacitance C passes through forth terminal and relay DBJ
Other end connection, the other end of resistance R connect by the other end of DB1 grade of first terminal and transformer, the first electric current biography
The signal of sensor H10 and the second current sensor H20 are respectively delivered to the first signal condition unit S11 and second signal conditioning is single
First S12, signal are converted by the first A/D respectively after the first signal condition unit S11 and the S12 conditionings of second signal conditioning unit
Cell S 13 and the 2nd A/D converting units S14 are transferred to microprocessing unit S15.Microprocessing unit S15 is also associated with display unit
S16, communication module S17 and alarm unit S18.In the present embodiment, the first current sensor H10 and the second current sensor H20
For any of current transformer or Hall current sensor.
The effect of each current sensor unit H10 and the second current sensor H20 are that railway is believed in a manner of isolation
Resistance and capacitance current in number equipment resistance-capacitance box are transformed into voltage signal；First signal condition unit S11 and second signal tune
The effect of reason cell S 12 is put to the signal of the first current sensor unit S10 and the second current sensor H20 outputs
Greatly, filtering, linear compensation, protection etc.；The effect of first A/D converting units S13 and the 2nd A/D converting units S14 are to
One signal condition unit S11 and the signal of second signal conditioning unit S12 outputs carry out A/D conversions；Microprocessor unit S15's
Effect is by judging indication circuit to current sampling data progress digital filtering, the analysis of positive-negative half-cycle signal, spectrum analysis
Working condition, and will judge that result phase is shown in display unit S16, carries out controlling alarm, Yu Tong in alarm unit S18
Believe that module S17 is sent into row information；The effect of display unit S16 is each state of display indication circuit work, which includes
Indication circuit is normal, indication circuit deterioration, indication circuit open circuit, diode or cable short circuit, diode open-circuit, capacitance short-circuit
Or open circuit, track switch four are opened or are converted, track switch positions and track switch antiposition；The effect of communication module S17 is by microprocessor unit S15
The each state of indication circuit work determined is handled to be communicated with external equipment；The effect of alarm unit S18 is that output is set
Standby alarm sound and switching value；The effect of power supply unit S19 is power supply supply and power conversion, provides stable electricity for device
Source.
As shown in Figure 1, the composition of direct current track switch indication circuit is exactly a half-wave rectifying circuit, transformer in fact in figure
DB1 realizes isolation transformation function, and AC220V50Hz is dropped to AC110V50Hz；Resistance R plays current-limiting function；Diode Z is played
Halfwave rectifier function；Capacitance C plays rectification post filtering function；Relay DBJ expressions are loads, play and indicate state output work(
Energy；Since diode Z has one-way conduction characteristic so that the electric current for flowing through resistance R only has positive half cycle, when transformer DB1 is exported
When waveform is positive half cycle, electric current flows successively through resistance R, diode Z, then respectively flows through relay DBJ to supply energy to electricity
Hold C chargings, when transformer DB1 output waveforms are negative half period, since the reversed cut-off of diode Z acts on so that transformer DB1
Electric current can not export, at this moment the energy of relay DBJ is in the form of electric discharge just by capacitance C by being supplied, and ensures in this way
Relay DBJ is reliably attracted.Below by specific theoretical calculation analysis, to direct current track switch indication circuit work each state into
Row judgement：
（1）Switch indication circuit normally with the judgement of deterioration：Transformer DB1 is indication transformer, its input is 220V, output
Resistance value for 110V, resistance R is 750 ohm, the model JPXC-1000 of relay DBJ, and resistance value is 1000 ohm, electricity
The capacitance for holding C is 4uF.According to Ohm's law：Electric current=voltage/resistance, that is, the current formula for flowing through resistance R are：I=U/ (R+ after
Electric appliance resistance and capacitance C)/2, capacitive reactance is first calculated here, according to the capacitance capacitive reactance formula π fC of Rc=1/2, obtains capacitance C capacitor values： 1/
2 796 ohm of fC=1/ π (2 × 3.14 × 50 × 0.000004) ≈, then relay resistance and capacitance C resistance values are calculated, according to resistance
Formula r=r1 × r2/ (r1+r2) in parallel, calculate relay resistance and capacitance C resistance value=1000 × 796/（1000+796）
443 ohm of ≈, the above current formula for calculating gained numerical tape and entering to flow through resistance R, must flow through resistance R electric current=U/ (R+ after
Electric appliance resistance and capacitance C)/2=110/ (750+443)/2 ≈ 0.046A.By the first current sensor unit, H10 flow through electricity
The electric current of resistance R is converted into voltage signal, then be amplified, filter through signal condition unit, linear compensation, the measures such as protection,
It is converted again through A/D converting units A/D, microprocessor unit S15 carries out virtual value calculating to gathered data, calculates and flows through resistance
The current value of R, when measuring current value and being more than or equal to 0.046A × 80%, judgement switch indication circuit is normal, and when measuring, electric current is small
The deterioration of switch indication circuit is judged when 0.046A × 80%.In practical applications, since capacitance is easier to deteriorate, i.e.,
Capacitance becomes smaller, and according to the 1/2 π fC formula of capacitive reactance of capacitance C, when capacitance change is small, capacitive reactance can become larger, to cause
The electric current for flowing through resistance R becomes smaller.
（2）The judgement of switch indication open circuit：According to above-mentioned（1）Description, when the first current sensor unit H10 is surveyed
Go out when electric current is 0A and judges switch indication open circuit.In practical applications, due to track switch, indication circuit is in transfer process
In open-circuit condition, while track switch conversion duration is also not to be exceeded 30 seconds, therefore regulation ought be examined continuously 30 seconds or more herein
It is switch indication open circuit to detect that 0A electric currents just judge.
（3）The judgement of switch indication circuit diode or cable short circuit：When the breakdown short circuits of diode Z or cable short circuit
When, electric current will flow through resistance R with full wave format, and the electric current for flowing through resistance R is converted by the first current sensor unit H10
At voltage signal, be amplified, filter through signal condition unit, linear compensation, protection etc., then carried out through A/D converting units
A/D is converted, and microprocessor unit S15 carries out virtual value calculating to gathered data, according to above-mentioned（1）Description, electric current at this moment
Virtual value is equal to the sum of positive-negative half-cycle electric current, since negative half period is equal with positive half cycle, that is, flows through electric current=0.046A × 2 of resistance R
=0.092A, then spectrum analysis is carried out to gathered data and calculates the signal-to-noise ratio for 50Hz, it is more than or equal to when electric current measures
Judgement switch indication circuit diode or cable short circuit when 0.092A × 80%=0.0736A, signal-to-noise ratio are more than 0dB.
（4）The short circuit of switch indication circuit capacitance or the judgement of open circuit：According to above-mentioned（1）Description, when passing through the first electric current
Sensor unit H10, which is measured, to be flowed through the current value of resistance R and is equal to and is measured by the second current sensor unit H20 and flow through capacitance C
Current value when, judgement capacitance C is short-circuit；When the current value for flowing through the current value of resistance R more than 0A and flowing through capacitance C is
When 0A, capacitance open circuit is judged.
（5）The judgement of switch indication circuit switch location：The location of track switch altogether there are three types of situation, i.e., positioning, antiposition,
Four open, and when track switch changes to antiposition from positioning or changes to positioning from antiposition, the polarity of diode Z is replaced by external node
Conversion.According to above-mentioned（1）Description, microprocessor unit S15 by collected current data carry out polarity judgement, when
When the electric current for flowing through resistance R only has positive half cycle, judgement track switch is positioning, otherwise in antiposition.If electric current was in continuous 30 seconds or more
When 0A, judgement track switch four is opened.
Embodiment 2
Resistance-capacitance box shown in Fig. 2 with direct current track switch indication circuit working state monitoring, there are one resistance loop and an electricity
Hold circuit, there are two resistance is respectively first resistor R1 and second resistance R2 in resistance loop, there are one capacitances in capacitor loop
It is connect with secondary one end of transformer DB1 by the 5th terminal after one end parallel connection of C, first resistor R1 and second resistance R2,
After the other end of first resistor R1 and second resistance R2 are each passed through the first current sensor H10 and third current sensor H11
Parallel connection is connect by the 6th terminal with the anode of diode Z.One end of capacitance C passes through second across the second current sensor H20
Terminal Second terminal is connect with the other end of the DB1 grade in the one end relay DBJ and transformer respectively, and the other end of capacitance C passes through
Forth terminal is connect with the other end of relay DBJ.The signal of first current sensor H10 and the second current sensor H20 point
Be not transported to the first signal condition unit S11 and second signal conditioning unit S12, signal through the first signal condition unit S11 and
It is transferred to respectively by the first A/D converting units S13 and the 2nd A/D converting units S14 after the S12 conditionings of second signal conditioning unit
Microprocessing unit S15.Microprocessing unit S15 is also associated with display unit S16, communication module S17 and alarm unit S18.This reality
It applies in example, the first current sensor H10 and any that the second current sensor H20 is current transformer or Hall current sensor
Kind.Microprocessing unit S15 is also associated with display unit S16, communication module S17 and alarm unit S18.It is described in the present embodiment
First current sensor H10, the second current sensor H20 and third current sensor H11 are current transformer or Hall current
Sensor it is any.
The operation principle of embodiment 2 and the operation principle of embodiment 1 are essentially the same, and two resistances have only been used in embodiment 2
It is worth equal resistance R1, R2 to replace the resistance R in Fig. 1, its purpose is to improve the reliability of equipment, safety.
First resistor R1, second resistance R2 are used in Fig. 2, pass through the first current sensor unit H10, the second electric current respectively
Sensor unit H20 has detected whether electric current to judge whether first resistor R1, second resistance R2 are faulty, when the first electric current passes
Sensor cell H10, which is measured when electric current is 0, shows that first resistor R1 is faulty, when the second current sensor unit H20 measures electric current
Show that second resistance R2 is faulty when being 0.
Claims (4)
1. a kind of resistance-capacitance box with direct current track switch indication circuit working state monitoring, it is characterised in that：There are one resistance loops
With a capacitor loop, there are one resistance in the resistance loop, one end of the resistance passes through the first current sensor and the
One terminal connects, and the other end of resistance is connect with Second terminal, and there are one capacitance, one end of the capacitance in the capacitor loop
It is connect with third terminal across the second current sensor, the other end of the capacitance is connect with forth terminal, first electric current
The signal of sensor and second current sensor is respectively delivered to the first signal condition unit and second signal conditioning unit,
The signal is converted by the first A/D respectively after first signal condition unit and second signal conditioning unit conditioning
Unit and the 2nd A/D converting units are transferred to microprocessing unit.
2. the resistance-capacitance box according to claim 1 with direct current track switch indication circuit working state monitoring, it is characterised in that：
There are two the resistance loops, is respectively equipped with first resistor and second resistance, and one end of the first resistor and second resistance is simultaneously
It is connect with the 5th terminal after connection, the other end of the first resistor and second resistance is each passed through the first current sensor and third
It is connect with the 6th terminal after current sensor parallel connection.
3. the resistance-capacitance box with direct current track switch indication circuit working state monitoring according to claims 1 or 2, feature
It is：First current sensor and second current sensor and third current sensor are current transformer or Hall
Current sensor it is any.
4. the resistance-capacitance box with direct current track switch indication circuit working state monitoring according to claims 1 or 2, feature
It is：The microprocessing unit is also associated with display unit, communication module and alarm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810847826.XA CN108761317A (en) | 2018-07-27 | 2018-07-27 | Resistance-capacitance box with direct current track switch indication circuit working state monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810847826.XA CN108761317A (en) | 2018-07-27 | 2018-07-27 | Resistance-capacitance box with direct current track switch indication circuit working state monitoring |
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| Publication Number | Publication Date |
|---|---|
| CN108761317A true CN108761317A (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810847826.XA Pending CN108761317A (en) | 2018-07-27 | 2018-07-27 | Resistance-capacitance box with direct current track switch indication circuit working state monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531189A (en) * | 2019-08-14 | 2019-12-03 | 交控科技股份有限公司 | Track switch loses the diagnostic method and device for indicating failure |
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| CN102628904A (en) * | 2012-04-22 | 2012-08-08 | 柳州辰天科技有限责任公司 | Capacitance deterioration detection device for resistance-capacitance device of railway signals equipment |
| CN102778621A (en) * | 2012-07-25 | 2012-11-14 | 中铁十局集团电务工程有限公司 | Portable test device for direct-current turnout switch machines |
| CN202870199U (en) * | 2012-09-20 | 2013-04-10 | 中铁电气化局集团有限公司 | Turnout control testing instrument |
| CN208506201U (en) * | 2018-07-27 | 2019-02-15 | 柳州和利时科技有限责任公司 | Resistance-capacitance box with direct current track switch indication circuit working state monitoring |
-
2018
- 2018-07-27 CN CN201810847826.XA patent/CN108761317A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201828637U (en) * | 2010-09-20 | 2011-05-11 | 河南辉煌科技股份有限公司 | Semi-automatic blocking resistance-capacitance box discharge curve monitoring module |
| CN102628904A (en) * | 2012-04-22 | 2012-08-08 | 柳州辰天科技有限责任公司 | Capacitance deterioration detection device for resistance-capacitance device of railway signals equipment |
| CN102778621A (en) * | 2012-07-25 | 2012-11-14 | 中铁十局集团电务工程有限公司 | Portable test device for direct-current turnout switch machines |
| CN202870199U (en) * | 2012-09-20 | 2013-04-10 | 中铁电气化局集团有限公司 | Turnout control testing instrument |
| CN208506201U (en) * | 2018-07-27 | 2019-02-15 | 柳州和利时科技有限责任公司 | Resistance-capacitance box with direct current track switch indication circuit working state monitoring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531189A (en) * | 2019-08-14 | 2019-12-03 | 交控科技股份有限公司 | Track switch loses the diagnostic method and device for indicating failure |
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