CN205737587U - A kind of axle counting sensing device - Google Patents
A kind of axle counting sensing device Download PDFInfo
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- CN205737587U CN205737587U CN201620572174.XU CN201620572174U CN205737587U CN 205737587 U CN205737587 U CN 205737587U CN 201620572174 U CN201620572174 U CN 201620572174U CN 205737587 U CN205737587 U CN 205737587U
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Abstract
A kind of axle counting sensing device of two axle-counting signals of output, wheel is detected by each axle-counting signal by two the magnetic head formula wheel detectors being arranged on left and right track, only being arranged on two magnetic head formula wheel detectors of left and right track when being detected simultaneously by wheel and export useful signal, the axle-counting signal just making output is effective.Axle-counting signal is eliminated unit by impulse disturbances and filters narrow pulse interference and the shaking interference at signal edge, further increase capacity of resisting disturbance, and the Breadth Maximum of the positive burst pulse that can filter and negative burst pulse can be adjusted by changing charge constant and discharge time constant respectively.Described device can be applied in the occasion that locomotive on track, train carry out wheel detection and meter shaft.
Description
Technical field
This utility model relates to axis-counting device technical field, especially a kind of axle counting sensing device.
Background technology
Track circuit rail level is because the impact of bad conducting objects causes track circuit shunting badness, train or locomotive to take rail
The track relay controlling this track section during road can not be operating normally, and causes interlocking of signals to lose efficacy.Use axle count sensor side
During case, the break-make that mechanical pick-up device relies on spring to control electrode contacts produces the signal that train arrives, and easily produces contact and connects
Touch bad and signal jitter interference；The infrared ray of infrared sensor is easily blocked by dust and foreign material, and is easily done by other illumination
Disturb generation disturbing pulse；Ultrasonic piezoelectric transducer due to must exposed outside, it is impossible to effectively protect, be the most easily subject to simultaneously
To the interference effect of other barriers such as construction worker, produce disturbing pulse；Eddy current coil sensing, magnetic head sensor sensing are easily
Affected by metal sundries, such as, when construction of railways personnel hold spade slip over magnetic head sensor time, easily to magnetic head differentiate make
Become interference, export disturbing pulse.Above-mentioned various sensor is when wheel enters or exit detection interval, owing to vehicle is through making
The reasons such as the sensor vibration, wheel self vibration and sensor self contact chatter that become, will also result in transducing signal edge
Produce Vibrating pulse.
Summary of the invention
In order to solve locomotive on existing track, train carry out wheel detection and problem existing for axle-counting device, this practicality
Novel provide a kind of axle counting sensing device, including the first from left magnetic head formula wheel detector, a right magnetic head formula wheel detector,
The second from left magnetic head formula wheel detector, right two magnetic head formula wheel detectors, first and logical block, second and logical block.
Described the first from left magnetic head formula wheel detector, a right magnetic head formula wheel detector, the second from left magnetic head formula wheel detector, the right side
Two magnetic head formula wheel detectors export respectively the first from left wheel-sensors signal, a right wheel-sensors signal, the second from left wheel-sensors signal,
Right two wheel-sensors signals.
Described the first from left wheel-sensors signal and a right wheel-sensors signal deliver to first and logical block, the second from left wheel-sensors
Signal and right two wheel-sensors signals deliver to second and logical block.
Described first exports the first wheel-sensors signal with logical block, and second exports the second wheel-sensors with logical block
Signal；Described first wheel-sensors signal is the first axle-counting signal, and the second wheel-sensors signal is the second axle-counting signal.
Described the first from left magnetic head formula wheel detector is arranged on outside or inner side, a right magnetic head formula wheel-sensors of left track
Device is arranged on outside or the inner side of right track, and is on same axletree line；Described the second from left magnetic head formula wheel detector is installed
In the outside of left track or inner side, right two magnetic head formula wheel detectors are arranged on outside or the inner side of right track, and are in
On same axletree line.
Described axle counting sensing device also includes that the first impulse disturbances eliminates unit and the second impulse disturbances eliminates unit.
Described first wheel-sensors signal is delivered to the first impulse disturbances and is eliminated the pulse input end of unit, the second wheel-sensors
Signal is delivered to the second impulse disturbances and is eliminated the pulse input end of unit；Described first impulse disturbances eliminates the output pulse ends of unit
Exporting the first axle-counting signal, the second impulse disturbances eliminates the output pulse ends of unit and exports the second axle-counting signal.
Described first impulse disturbances eliminates unit and the second impulse disturbances elimination unit is that the pulse that structural parameters are identical is done
Disturb elimination unit.Described impulse disturbances eliminates unit and includes controllable discharge circuit, controlled charging circuit, electric capacity, Schmidt circuit.
The input of described controllable discharge circuit is input pulse, and output is connected to Schmidt circuit input；Described controllable aerating
Electricity circuit input is input pulse, and output is connected to Schmidt circuit input；One end of described electric capacity is connected to Schmidt's electricity
Road input, other end be connected to impulse disturbances eliminate unit publicly or power supply；Described Schmidt circuit
Outfan for output pulse ends.
Described controllable discharge circuit includes repid discharge diode, charging resistor, repid discharge triple gate；Described quickly put
Electric diode negative electrode is connected to repid discharge triple gate outfan, and anode is controllable discharge circuit outfan；Described charging resistor
With repid discharge diodes in parallel；Described controlled charging circuit includes quick charge diode, discharge resistance, quick charge tri-state
Door；Described quick charge diode anode is connected to quick charge triple gate outfan, and negative electrode is controlled charging circuit output end；
Described discharge resistance and quick charge diodes in parallel.
Described repid discharge triple gate input is controllable discharge circuit input；Described quick charge triple gate input
For controlled charging circuit input end；The enable of described repid discharge triple gate controls end and is connected to export pulse；Described quickly fill
The enable of electricity triple gate controls end and is connected to export pulse.
The beneficial effects of the utility model are: described axle counting sensing device relies on left and right two sensors to examine simultaneously
Surveying wheel on same axletree, the most left and right two sensors detect effectively simultaneously, just export effective transducing signal or meter shaft
Signal, it is possible to effectively eliminate the various interference signals of single-sensor output；Effectively transducing signal is eliminated single by impulse disturbances
Unit filters narrow pulse interference and the shaking interference at signal edge, further increases the capacity of resisting disturbance of device, and impulse disturbances
The burst pulse Breadth Maximum eliminating unit filtration can be adjusted with discharge time constant by changing charge constant.
Accompanying drawing explanation
Fig. 1 is wheel detector installation site embodiment in axle counting sensing device；
Fig. 2 is axle counting sensing device embodiment 1 structured flowchart；
Fig. 3 is axle counting sensing device embodiment 2 structured flowchart；
Fig. 4 is that impulse disturbances eliminates unit embodiment；
Fig. 5 is input pulse and the output pulse waveform that impulse disturbances eliminates unit embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
It is illustrated in figure 1 wheel detector installation site embodiment in axle counting sensing device.The first from left magnetic head formula wheel
Sensor 201, a right magnetic head formula wheel detector 202 are separately mounted to left track 101, the inner side of right track 102, and are in same
On one axletree line B1.Locomotive, train traveling in, when wheel shaft traveler car axis B1 position, the first from left magnetic head formula wheel
Sensor 201 and a right magnetic head formula wheel detector 202 are respectively induced left and right wheel and export useful signal simultaneously.The first from left
Magnetic head formula wheel detector 201 and a right magnetic head formula wheel detector 202 need to be separately mounted to outside left and right track or interior
Side, can simultaneously or be separately mounted to outside track or inner side, but necessarily be on same axletree line, i.e. the first from left magnetic head formula
Wheel detector 201 and a right magnetic head formula wheel detector 202 need to feel the left and right wheel on same axletree simultaneously
Should.
The second from left magnetic head formula wheel detector 203, right two magnetic head formula wheel detectors 204 are separately mounted to left track 101, the right side
The inner side of track 102, and be on same axletree line B2.Locomotive, train traveling in, as wheel shaft traveler car axis B2
During position, the second from left magnetic head formula wheel detector 203 and right two magnetic head formula wheel detectors 204 are respectively induced left and right wheel also
Export useful signal simultaneously.The second from left magnetic head formula wheel detector 203 and right two magnetic head formula wheel detectors 204 need to be respectively mounted
Outside left and right track or inner side, can simultaneously or be separately mounted on track, outside or inner side, but necessarily be in
On same axletree line, i.e. the second from left magnetic head formula wheel detector 203 and right two magnetic head formula wheel detectors 204 need simultaneously to same
Left and right wheel on axletree senses.
Fig. 2 show axle counting sensing device embodiment 1 structured flowchart.The first from left magnetic head formula wheel detector 201, the right side one
Magnetic head formula wheel detector 202, the second from left magnetic head formula wheel detector 203, right two magnetic head formula wheel detectors 204 export a left side respectively
One wheel-sensors signal Z1, a right wheel-sensors signal Y1, the second from left wheel-sensors signal Z2, right two wheel-sensors signal Y2, Z1,
Y1 delivers to the input of first and logical block 301, and Z2, Y2 deliver to the input of second and logical block 302.
In Fig. 2 shown device embodiment 1, first is structure function phase with logical block 301, second with logical block 302
With and logical block, there is 2 inputs I1, I2,1 outfan O1.With the function of logical block it is: only when 2 defeated
Enter signal all effectively time, output is just effectively.If it is effective that input signal is high level, when i.e. wheel having been detected, wheel-sensors
Device is output as high level, then be AND circuit with logical block；If input signal is Low level effective, wheel detected
Time, wheel detector is output as low level, then be OR circuit with logical block.If input is to 2 cars with logical block
Wheel sensor signal one is that high level is effective, and another one is Low level effective, it is only necessary to a wheel detector wherein
Outfan increase phase inverter and just can make 2 wheel sensor signal effectively for high level simultaneously, or be low simultaneously
Level is effective.First with logical block and second with the function of logical block can also use CPLD, FPGA, PLA, PAL, GAL,
The devices such as ROM realize.
When having the axletree of locomotive or train through the first from left magnetic head formula wheel detector 201 and a right magnetic head formula wheel-sensors
When the axletree line at place installed by device 202, the first from left magnetic head formula wheel detector 201 and a right magnetic head formula wheel detector 202 are simultaneously
The wheel of this axletree detected and make Z1, Y1 signal effective, the first the first wheel-sensors signal M1 exported with logical block 301
Effectively, the first axle-counting signal is effective；When there is no the axletree of locomotive or train through the first from left magnetic head formula wheel detector 201 and the right side
When one magnetic head formula wheel detector 202 installs the axletree line at place, the first from left magnetic head formula wheel detector 201 and a right magnetic head formula car
Wheel sensor 202 is not detected by wheel, Z1, Y1 invalidating signal of output, the first the first wheel biography exported with logical block 301
Signal M1 is invalid in sense, and the first axle-counting signal is invalid；When there is no the axletree of locomotive or train through the first from left magnetic head formula wheel-sensors
When device 201 and a right magnetic head formula wheel detector 202 install the axletree line at place, the first from left magnetic head formula wheel detector 201 or
A right magnetic head formula wheel detector 202, in the case of not having wheel, because reasons such as interference, makes in Z1, Y1 signal
Being output as effectively, first is the most invalid with the first wheel-sensors signal M1 that logical block 301 exports, the i.e. first axle-counting signal without
Effect.
The second from left magnetic head formula wheel detector 203, right two magnetic head formula wheel detectors 204, second and the work of logical block 302
Make principle and the first from left magnetic head formula wheel detector 201, a right magnetic head formula wheel detector 202, first and logical block 301 phase
With, only there iing the axletree of locomotive or train through the second from left magnetic head formula wheel detector 203 and right two magnetic head formula wheel-sensors
When the axletree line at place installed by device 204, the second from left magnetic head formula wheel detector 203 and right two magnetic head formula wheel detectors 204 are simultaneously
The wheel of this axletree detected and make Z2, Y2 signal effective, the second the second wheel-sensors signal M2 exported with logical block 302
Effectively, the second axle-counting signal is effective；There is no the axletree of locomotive or train through the second from left magnetic head formula wheel detector 203 and the right side
When two magnetic head formula wheel detectors 204 install the axletree line at place, though the second from left magnetic head formula wheel detector 203, right two magnetic heads
In formula wheel detector 204 one, because the reason such as interference, makes in Z2, Y2 signal one to be output as effectively, second with patrol
The the first wheel-sensors signal M2 collecting unit 302 output is the most invalid, and the i.e. second axle-counting signal is invalid.The second from left magnetic head formula wheel passes
Sensor 203, right two magnetic head formula wheel detectors 204 install the axletree line at place on the first from left magnetic head formula wheel detector 201, the right side one
Magnetic head formula wheel detector 202 installs the front of the axletree line at place, axle counting sensing device export the first axle-counting signal and
Second axle-counting signal two axle-counting signal is the direct of travel for determining locomotive or train.
Fig. 3 show axle counting sensing device embodiment 2 structured flowchart.Fig. 3 shown device embodiment 2 is shown in Fig. 2
Add the first impulse disturbances on the basis of device embodiment 1 and eliminate unit 401 and the second impulse disturbances elimination unit 402.The
One wheel-sensors signal M1 delivers to the first impulse disturbances and eliminates the pulse input end P1 of unit 401, narrow through eliminate in signal M1
After impulse disturbances and edge trembling interference, the first impulse disturbances eliminate unit 401 outfan P2 and export the first axle-counting signal N1.
Similarly, the second wheel-sensors signal M2 delivers to the second impulse disturbances and eliminates the pulse input end P1 of unit 402, through eliminating signal
After narrow pulse interference in M2 and edge trembling interference, the second impulse disturbances eliminate outfan output second meter of unit 402
Axis signal N2.
First impulse disturbances eliminates unit 401 and eliminates, with the second impulse disturbances, the pulse that unit 402 is structure, function is identical
Interference cancellation unit.Impulse disturbances eliminates the composition of unit and includes controllable discharge circuit, controlled charging circuit, electric capacity, Schmidt
Circuit.Impulse disturbances eliminates my input pulse P1 of input signal of unit, and output signal is output pulse P2.
It is illustrated in figure 4 impulse disturbances and eliminates unit embodiment.In embodiment, repid discharge diode, charging resistor, fast
Speed electric discharge triple gate is respectively diode D11, resistance R11, triple gate T11, constitutes controllable discharge circuit；Quick charge two pole
Pipe, discharge resistance, quick charge triple gate are respectively diode D12, resistance R12, triple gate T12, constitute controlled charged electrical
Road；Electric capacity is electric capacity C11.Schmidt circuit F11 is homophase Schmidt circuit, therefore, exports pulse P2 and input in embodiment
Pulse P1 homophase.The input of the one termination Schmidt circuit of electric capacity C11, i.e. the input A3 of F11, other end is connected to public affairs
Altogether.
In Fig. 4 embodiment, Schmidt circuit F11 is homophase Schmidt circuit, and output pulse P2 (A4 point in Fig. 4) directly connects
Be connected to triple gate T11, the enable of triple gate T12 controls end, and triple gate T11, triple gate T12 respectively low level, high level make
Can be effective.The high and low level of output pulse P2 control respectively triple gate T12 be duty, for illegal state, export pulse P2
High and low level control respectively triple gate T11 be illegal state, for duty.Controlled by output pulse P2, triple gate
In T11 and triple gate T12 always one be in as duty state, another one is in as illegal state state.Work as tri-state
Door T11, triple gate T12 use low level to enable effectively or time high level enables effective device simultaneously, one of them
Controlled by the inversion signal of output pulse P2.
Fig. 5 is input pulse and the output pulse waveform that impulse disturbances eliminates unit embodiment.In Fig. 5, P1 is input arteries and veins
Punching, P2 is output pulse, when P1 low level is normal negative broad pulse, A3 point current potential and A1 point low level current potential one in Fig. 4
Causing, P2 is low level, and triple gate T11 is duty, and the A1 level point of its output is consistent with A0 point；T12 is illegal state, defeated
Go out for high-impedance state.Electric capacity C11 is charged by the high level of positive burst pulse 11 by charging resistor R11, makes A3 point current potential increase；Due to
The width of burst pulse 11 is still below the upper limit door of Schmidt circuit F11 less than time T1, A3 point current potential at the end of burst pulse 11
Sill voltage, therefore, P2 is maintained low level, and triple gate T11 is maintained duty；At the end of burst pulse 11, A1 point becomes again
Make electric capacity C11 repid discharge for low level and by repid discharge diode D11, make A3 point current potential and A1 point low level current potential one
Causing, recover the state before arriving to burst pulse 11, its capacity of resisting disturbance is recovered rapidly, when the narrowest followed by there being continuous print
During pulse interference signal, can filter out equally.Positive burst pulse 12, the width of positive burst pulse 13 are respectively less than time T1, therefore, when
At the end of each in burst pulse 12, burst pulse 13, P2 is maintained low level, and A1 point becomes low level and again by quickly
Discharge diode D11 makes electric capacity C11 repid discharge, makes A3 point current potential consistent with A1 point low level current potential.
Pulse 14 is normal positive broad pulse, and when P1 maintains high level time to reach T1 after rising edge 20, A1 point is high
Being charged electric capacity C11 by charging resistor R11 of level, makes A3 point current potential rise the upper limit threshold reaching Schmidt circuit F11
Voltage, Schmidt circuit F11 output P2 at rising edge 25, become high level from low level, make triple gate T11 be illegal state,
T12 is duty, and the A2 level point of its output is consistent with A0 point；The high level of A2 point is made by quick charge diode D12
Electric capacity C11 quick charge, makes A3 point current potential consistent with A2 point high level current potential, and P2 is maintained high level.
Electric capacity C11 is discharged by the low level of negative burst pulse 15 by discharge resistance R12, makes A3 point current potential decline；Due to narrow
The width of pulse 15 remains above the lower limit threshold of Schmidt circuit F11 less than time T2, A3 point current potential at the end of burst pulse 15
Voltage, therefore, P2 is maintained high level, and triple gate T12 is maintained duty；At the end of burst pulse 15, A2 point becomes again
High level and make electric capacity C11 quick charge by quick charge diode D12, makes A3 point current potential and A2 point high level current potential one
Causing, recover the state before arriving to burst pulse 15, its capacity of resisting disturbance is recovered rapidly, when narrow followed by there being continuous print to bear
During pulse interference signal, can filter out equally.When negative burst pulse 16, negative burst pulse 17, the width of negative burst pulse 18 are respectively less than
Between T2, therefore, at the end of each in burst pulse 16, burst pulse 17, burst pulse 18, P2 is maintained high level, A2 point weight
Newly become high level and make electric capacity C11 quick charge by quick charge diode D12, making A3 point current potential and A2 point high level electricity
Position is consistent.
When P1 maintains low level time to reach T2 after trailing edge 21, represent that P1 has a broad pulse the most negative, A2
Electric capacity C11 is discharged by the low level of point by discharge resistance R12, makes A3 point current potential decline the lower limit reaching Schmidt circuit F11
Threshold voltage, the output P2 of Schmidt circuit F11 becomes low level from high level at trailing edge 26, and making triple gate T11 is work
Make state, T12 is illegal state；The low level of A1 point makes electric capacity C11 repid discharge by repid discharge diode D11, makes A3
Point current potential is consistent with A1 point low level current potential, and P2 is maintained low level.Negative broad pulse 19 width of P1 is more than T2, in negative broad pulse
When maintaining high level time to reach T1 after the rising edge 22 of 19, P2 becomes high level from low level at rising edge 27.
Impulse disturbances eliminates unit by the burst pulse 11 in P1 signal, burst pulse 12, burst pulse 13, burst pulse 15, narrow arteries and veins
Punching 16, burst pulse 17, burst pulse 18 all filter out, and positive broad pulse 14, negative broad pulse 19 can be passed through, and make appearance in P2 signal
Corresponding positive broad pulse 23 and negative broad pulse 24.Output pulse P2 and input pulse P1 homophase, and the broad pulse 14 exported rises
Along broad pulse 14 rising edge T1 lag time, trailing edge T2 lag time than input.
Burst pulse 11, burst pulse 12, burst pulse 13 are positive burst pulse, and wherein burst pulse 11 is disturbing pulse, burst pulse 12,
Burst pulse 13 is continuous print switch contact Vibrating pulse.Time T1 is the narrowest arteries and veins of maximum that impulse disturbances eliminates that unit can filter
Rush width.High level current potential, low level current potential and the Schmidt circuit F11 that T1 is exported by charge constant, triple gate T11
Upper limit threshold voltage joint effect.Under normal circumstances, high level current potential and the low level current potential of triple gate T11 output is fixed
Value, therefore, the value adjusting T1 can be carried out by changing the upper limit threshold voltage of charge constant or Schmidt circuit.
In Fig. 4, charge constant is the product of charging resistor R11 and electric capacity C11.Described impulse disturbances eliminates unit and allows width big
Positive pulse signal in T1 passes through.
Burst pulse 15, burst pulse 16, burst pulse 17, burst pulse 18 are negative burst pulse, and wherein burst pulse 15 is disturbing pulse,
Burst pulse 16, burst pulse 17, burst pulse 18 are continuous print switch contact Vibrating pulse.Time T2 is that impulse disturbances eliminates unit energy
Enough maximums filtered bear narrow pulse width.High level current potential that T2 is exported by discharge time constant, triple gate T12, low level
The lower limit threshold voltage joint effect of current potential and Schmidt circuit F11.Under normal circumstances, the high level electricity of triple gate T12 output
Position and low level current potential are definite value, and therefore, the value adjusting T2 can be by changing discharge time constant or Schmidt circuit
Lower limit threshold voltage is carried out.In Fig. 4, discharge time constant is the product of discharge resistance R12 and electric capacity C11.Described pulse is done
Disturbing elimination unit allows width to pass through more than the undersuing more than T2.
In Fig. 4, electric capacity C11 connect one end publicly can also reconfiguration impulse disturbances eliminate unit power supply end.
In Fig. 4, Schmidt circuit F11 can also select anti-phase Schmidt circuit, and now the high level of output pulse P2 should
This control repid discharge triple gate be duty, quick charge triple gate be illegal state, the low level control of output pulse
Repid discharge triple gate be illegal state, quick charge triple gate be duty.Such as, when Schmidt circuit F11 choosing in Fig. 4
Select anti-phase Schmidt circuit, when will export the enable control end that pulse P2 is connected directly to triple gate T11, triple gate T12, three
State door T11 should correspondingly change high level into and enable effectively, and triple gate T12 correspondingly changes low level into and enables effectively.Select anti-
During phase Schmidt circuit, the operation principle of circuit is identical with Fig. 4, and the most now output pulse is anti-phase with input pulse.
Repid discharge triple gate and quick charge triple gate can also select the inverting tri-state door with inverter functionality simultaneously.
When repid discharge triple gate selects inverting tri-state door with quick charge triple gate simultaneously, be equivalent to increase by one at input pulse end
Individual phase inverter, the most first carries out anti-narrow pulse interference after anti-phase for input pulse again, and operation principle is identical with Fig. 4.
The input signal of described Schmidt circuit is the voltage on electric capacity, it is therefore desirable to Schmidt circuit has high input
Impedance operator.Schmidt circuit can select to have high input impedance charcteristic cmos schmitt phase inverter CD40106,
74HC14, or select that there is the devices such as cmos schmitt NAND gate CD4093 of high input impedance charcteristic, 74HC24.CMOS
The upper limit threshold voltage of schmitt inverter or cmos schmitt NAND gate, lower limit threshold voltage are consolidate relevant to device
Definite value, therefore, the positive narrow pulse width of the input that adjustment can be filtered, negative narrow pulse width need by changing the charging interval normal
Number, discharge time constant are carried out.Constitute homophase Schmidt circuit by schmitt inverter or Schmidt's NAND gate, need
One-level phase inverter is increased after schmitt inverter or Schmidt's NAND gate.
Schmidt circuit can also select to use operational amplifier to constitute, and uses operational amplifier to constitute Schmidt's electricity
Road can change upper limit threshold voltage, lower limit threshold voltage neatly.Similarly, operational amplifier is used to constitute Schmidt's electricity
Lu Shi, needs to use structure and the circuit with high input impedance charcteristic.
Claims (5)
1. an axle counting sensing device, it is characterised in that:
Including the first from left magnetic head formula wheel detector, a right magnetic head formula wheel detector, the second from left magnetic head formula wheel detector, right two magnetic
Hair style wheel detector, first and logical block, second and logical block；
Described the first from left magnetic head formula wheel detector, a right magnetic head formula wheel detector, the second from left magnetic head formula wheel detector, right two magnetic
Hair style wheel detector exports the first from left wheel-sensors signal, a right wheel-sensors signal, the second from left wheel-sensors signal, the right side two respectively
Wheel-sensors signal；
Described the first from left wheel-sensors signal and a right wheel-sensors signal deliver to first and logical block, the second from left wheel-sensors signal
Second and logical block is delivered to right two wheel-sensors signals；
Described first exports the first wheel-sensors signal with logical block, and second exports the second wheel-sensors letter with logical block
Number；
Described first wheel-sensors signal is the first axle-counting signal, and the second wheel-sensors signal is the second axle-counting signal.
Axle counting sensing device the most according to claim 1, it is characterised in that: described the first from left magnetic head formula wheel detector
Be arranged on the outside of left track or inner side, a right magnetic head formula wheel detector is arranged on outside or the inner side of right track, and
It is on same axletree line；Described the second from left magnetic head formula wheel detector is arranged on outside or inner side, right two magnetic heads of left track
Formula wheel detector is arranged on outside or the inner side of right track, and is on same axletree line.
3. according to the axle counting sensing device described in claims 1 or 2, it is characterised in that: also include the first impulse disturbances
Eliminate unit and the second impulse disturbances eliminates unit；
Described first wheel-sensors signal is delivered to the first impulse disturbances and is eliminated the pulse input end of unit, the second wheel-sensors signal
Deliver to the second impulse disturbances and eliminate the pulse input end of unit；Described first impulse disturbances eliminates the output pulse ends output of unit
First axle-counting signal, the second impulse disturbances eliminates the output pulse ends of unit and exports the second axle-counting signal.
Axle counting sensing device the most according to claim 3, it is characterised in that: described first impulse disturbances eliminates unit
Eliminating unit with the second impulse disturbances is that the impulse disturbances that structural parameters are identical eliminates unit；
Described impulse disturbances eliminates unit and includes controllable discharge circuit, controlled charging circuit, electric capacity, Schmidt circuit；
The input of described controllable discharge circuit is input pulse, and output is connected to Schmidt circuit input；Described controlled charged electrical
Road input is input pulse, and output is connected to Schmidt circuit input；
One end of described electric capacity is connected to Schmidt circuit input, and other end is connected to impulse disturbances and eliminates the public of unit
Ground or power supply；
The outfan of described Schmidt circuit is output pulse ends.
Axle counting sensing device the most according to claim 4, it is characterised in that: described controllable discharge circuit includes quickly
Discharge diode, charging resistor, repid discharge triple gate；Described repid discharge diode cathode is connected to repid discharge triple gate
Outfan, anode is controllable discharge circuit outfan；Described charging resistor and repid discharge diodes in parallel；Described controlled charging
Circuit includes quick charge diode, discharge resistance, quick charge triple gate；Described quick charge diode anode is connected to soon
Speed charging triple gate outfan, negative electrode is controlled charging circuit output end；Described discharge resistance and quick charge diodes in parallel；
Described repid discharge triple gate input is controllable discharge circuit input；Described quick charge triple gate input is can
Control charging circuit input；The enable of described repid discharge triple gate controls end and is connected to export pulse；Described quick charge three
The enable of state door controls end and is connected to export pulse.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572174.XU CN205737587U (en) | 2016-06-15 | 2016-06-15 | A kind of axle counting sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572174.XU CN205737587U (en) | 2016-06-15 | 2016-06-15 | A kind of axle counting sensing device |
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| CN205737587U true CN205737587U (en) | 2016-11-30 |
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| CN110304108A (en) * | 2019-06-17 | 2019-10-08 | 深圳科安达电子科技股份有限公司 | It can prevent from losing the axle counting system and axis-counting device of axis |
| CN111845850A (en) * | 2020-07-28 | 2020-10-30 | 尹永云 | Subway track monitoring circuit |
| WO2020253673A1 (en) * | 2019-06-17 | 2020-12-24 | 深圳科安达电子科技股份有限公司 | Axle counting apparatus, and axle counting system |
| WO2020253672A1 (en) * | 2019-06-17 | 2020-12-24 | 深圳科安达电子科技股份有限公司 | Axle counting method capable of preventing axle miscounting, axle counting system, and axle counting apparatus |
| CN114123931A (en) * | 2021-11-30 | 2022-03-01 | 中国兵器工业集团第二一四研究所苏州研发中心 | Pulse width monitoring protection circuit |
| CN114123931B (en) * | 2021-11-30 | 2024-10-29 | 中国兵器工业集团第二一四研究所苏州研发中心 | Pulse width monitoring protection circuit |
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2016
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| CN110293997A (en) * | 2019-06-17 | 2019-10-01 | 深圳科安达电子科技股份有限公司 | The jamproof whistle control system of tramcar and axis-counting device |
| CN110304108A (en) * | 2019-06-17 | 2019-10-08 | 深圳科安达电子科技股份有限公司 | It can prevent from losing the axle counting system and axis-counting device of axis |
| WO2020253673A1 (en) * | 2019-06-17 | 2020-12-24 | 深圳科安达电子科技股份有限公司 | Axle counting apparatus, and axle counting system |
| WO2020253672A1 (en) * | 2019-06-17 | 2020-12-24 | 深圳科安达电子科技股份有限公司 | Axle counting method capable of preventing axle miscounting, axle counting system, and axle counting apparatus |
| CN110304108B (en) * | 2019-06-17 | 2021-07-02 | 深圳科安达电子科技股份有限公司 | Axle counting system capable of preventing axle from being lost and axle counting equipment |
| CN111845850A (en) * | 2020-07-28 | 2020-10-30 | 尹永云 | Subway track monitoring circuit |
| CN111845850B (en) * | 2020-07-28 | 2022-03-29 | 山西世恒铁路技术有限公司 | Subway track monitoring circuit |
| CN114123931A (en) * | 2021-11-30 | 2022-03-01 | 中国兵器工业集团第二一四研究所苏州研发中心 | Pulse width monitoring protection circuit |
| CN114123931B (en) * | 2021-11-30 | 2024-10-29 | 中国兵器工业集团第二一四研究所苏州研发中心 | Pulse width monitoring protection circuit |
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