CN101158699A - Motorcycle active speed-sensing device signal filtering equipment and signal filtering method - Google Patents
Motorcycle active speed-sensing device signal filtering equipment and signal filtering method Download PDFInfo
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- CN101158699A CN101158699A CNA2006100323836A CN200610032383A CN101158699A CN 101158699 A CN101158699 A CN 101158699A CN A2006100323836 A CNA2006100323836 A CN A2006100323836A CN 200610032383 A CN200610032383 A CN 200610032383A CN 101158699 A CN101158699 A CN 101158699A
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Abstract
The present invention provides a locomotive active speed sensor signal filtering device and a signal filtering method, in particular to a device which is suitable for filtering, shaping and diagnosis of output signals of an active speed sensor used for acquisition of rotational speed of railway traffic main road locomotive wheels. The device comprises a device power supply selection circuit 1, a controlling power supply circuit 2, and a speed signal processing unit 3. A four-way sensor power supply is used by the device power supply selection circuit as a power supply of the controlling power supply circuit. The output signals of the four-way sensor is transmitted to a locomotive wheel idling preventive controlling system after the filtering, shaping and diagnosis of the output signal by the signal processing unit. The present invention also comprises a method for filtering, shaping and diagnosis of the locomotive active speed sensor signal. The present invention can carry out intelligent filtering and shaping of the speed signal entering the idling prevention system so as to eliminate the interferences of the speed signal caused by abnormal phenomena such as dust and vibration etc., and diagnose and eliminate the fault speed sensor which can not be recovered.
Description
Technical field
The present invention relates to a kind of motorcycle active speed-sensing device signal filtering equipment and method for filtering signals; Be applied to of output signal intelligent filter, shaping and the diagnosis of railway traffic main-line locomotive wheel especially to the active speed-sensing of rotating speed collection use.
Background technology
At present railway traffic main-line locomotive wheel active speed-sensing that the rotating speed collection is used is subjected to the influence of the mal-conditions such as dust, vibration of locomotive operation, its output signal distortion, deficient phenomena are serious, have influence on locomotive and prevent that the wheel pair idling control system is to the accuracy of wheel to the real-time collection of rate signal.Cause the probability of the protection misoperation that air defense transfers from one department to another to unite too high so that influence making full use of of locomotive operation rail level clinging power.All these aspects all are necessary to take measures to solve.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective.Design a kind of device and get rid of dust, vibration etc. unusually to the interference of rate signal for entering filtering, the shaping that rate signal that air defense transfers from one department to another to unite carries out intelligence, the fault speed pickup that can't recover is also got rid of in diagnosis.
The invention provides a kind of speed pickup filtration unit comprises: the device power selection circuit, the control power circuit, the rate signal processing unit, the first speed sensor signal input end, second speed sensor signal input end, third speed sensor signal input end, the 4th speed sensor signal input end, the first speed sensor signal output terminal, second speed sensor signal output terminal, third speed sensor signal output terminal, the 4th speed sensor signal output terminal, the first speed pickup positive source, second speed probe power positive pole, third speed probe power positive pole, the 4th speed pickup positive source, speed pickup power supply ground end.
The device power selection circuit by D1, D2, D3, D4 totally 4 diodes form, be an auctioneering circuit.The anode of D1, D2, D3, D4 links to each other with the first speed pickup positive source, second speed probe power positive pole, third speed probe power positive pole, the 4th speed pickup positive source respectively, and the negative electrode parallel connection of D1, D2, D3, D4 links to each other with the positive pole of control power circuit.Speed pickup power supply ground end links to each other with the negative pole of control power circuit.The device power selection circuit also can be just with the positive source of the positive source of the positive source of the positive source of first speed pickup, second speed sensor, third speed sensor, the 4th speed pickup in any 1-3 link to each other.
Four signal input parts of rate signal processing unit are to link to each other with signal output part with described first speed pickup, second speed sensor, third speed sensor, the 4th speed pickup respectively, and signal output part prevents that with described locomotive wheel pair idling system respective signal input end links to each other after the processing of signal processing unit.
A kind of method that the motorcycle active speed-sensing signal is filtered, the rate signal processing unit includes following steps to four speed sensor signals:
A. calculate input pulse signal high level width, low level width and recurrence interval;
B. will the recurrence interval deposit transmitter register in;
C, calculating judge whether dutycycle exceeds the upper and lower bound of normal speed pulse, if the result is not for jumping to step G;
D, if the result of step C is for being that then the recurrence interval with last time deposits transmitter register in;
E, judge whether it is to continue to exceed the pulse duty factor upper and lower bound, if the result is not for jumping to step G;
F, if the result of step e is for being, then judge this road rate signal fault, deposit the arbitrarily normal recurrence interval of other No. 3 speed pickups in transmitter register, the fault judgement result is preserved or the fault judgement result is passed to other device in the mode of communication and show and as the foundation of other judgement in man-machine interface;
G, the recurrence interval of pressing transmitter register in the next one transmission cycle send pulse with 50% dutycycle.
A kind of method that the motorcycle active speed-sensing signal is filtered, the upper and lower bound of described normal speed pulse duty factor are respectively 70% and 30%.
The present invention is subjected to the influence of mal-conditions such as dust, vibration of locomotive operation little to active speed-sensing, its output signal is undistorted, do not lack, and locomotive prevents that the wheel pair idling system is accurate to the real-time collection of rate signal to wheel.This device is got rid of dust, vibration etc. unusually to the interference of rate signal for entering filtering, the shaping that rate signal that air defense transfers from one department to another to unite carries out intelligence, and the fault speed pickup that can't recover is also got rid of in diagnosis.
Description of drawings
Fig. 1 is an expression speed pickup filter apparatus configuration synoptic diagram of the present invention.
Fig. 2 is filtering, shaping and the diagnostic flow chart that expression rate signal of the present invention is handled
Fig. 3 is expression control circuit figure of the present invention
Embodiment
Referring to above-mentioned accompanying drawing: a kind of motorcycle active speed-sensing device signal filtering equipment, it comprises device power selection circuit 1, control power circuit 2, rate signal processing unit 3, described device power selection circuit 1 is by D1, D2, D3, totally 4 diodes of D4 forms, it is an auctioneering circuit, it is characterized in that: D1, D2, D3, the anode of D4 respectively with the positive source 12 of first speed pickup 18, the positive source 13 of second speed sensor 19, the positive source 14 of third speed sensor 20, the positive source 15 of the 4th speed pickup 21 links to each other D1, D2, D3, the negative electrode of D4 is in parallel and link to each other with the positive pole of control power circuit 2.The power-supply system ground end 16 of speed pickup 18,19,20,21 links to each other with the negative pole of control power circuit 2;
Four signal input parts of rate signal processing unit 3 are to link to each other with signal output part with first speed pickup 18, second speed sensor 19, third speed sensor 20, the 4th speed pickup 21 respectively, and signal output part prevents that with described locomotive wheel pair idling system 17 respective signal input ends link to each other after the processing of described signal processing unit 3.
Speed-sensing device signal filtering equipment, any 1-3 that wherein installs in the positive source 15 of positive source 14, the 4th speed pickup 21 of positive source 13, the third speed sensor 20 of positive source 12, the second speed sensor 19 of 1 of power selection circuit and first speed pickup 18 links to each other.
A kind of method that the motorcycle active speed-sensing signal is filtered, this method comprises the following steps:
C. calculate input pulse signal high level width, low level width and recurrence interval;
D. will the recurrence interval deposit transmitter register in;
C, calculating judge whether dutycycle exceeds the upper and lower bound of normal speed pulse, if the result is not for jumping to step G;
D, if the result of step C is for being that then the recurrence interval with last time deposits transmitter register in;
E, judge whether it is to continue to exceed the pulse duty factor upper and lower bound, if the result is not for jumping to step G;
F, if the result of step e is for being, then judge this road rate signal fault, deposit the arbitrarily normal recurrence interval of other No. 3 speed pickups in transmitter register, the fault judgement result is preserved or the fault judgement result is passed to other device in the mode of communication and show and as the foundation of other judgement in man-machine interface;
G, the recurrence interval of pressing transmitter register in the next one transmission cycle send pulse with 50% dutycycle.
A kind of method that the motorcycle active speed-sensing signal is filtered, the upper and lower bound of normal speed pulse duty factor are respectively 70% and 30%.
As shown in Figure 1, device power selection circuit 1 is selected the positive pole 12 of the first speed pickup power supply, the positive source 13 of second speed sensor, the positive source 14 of third speed sensor, the maximal value in the 4th speed pickup positive source 15, as the positive source of control power circuit 2; Guaranteed the reliability of device control circuit power supply.The power cathode of control power circuit 2 links to each other with speed pickup power supply ground end 16.Make speed-sensing device signal filtering equipment and speed pickup and prevent that wheel pair idling control system 17 from holding altogether.
First speed pickup 18, second speed sensor 19, third speed sensor 20, the 4th speed pickup 21 are input to rate signal processing unit 3 with signal input part 4, the signal input part 5 of second speed sensor, the signal input part 6 of third speed sensor, the 4th speed sensor signal input end 7 of rate signal speed pickup respectively as shown in Figure 1.Later on output terminal 8, the signal fan-out 9 of second speed sensor, the signal output part 10 of third speed sensor, the 4th speed sensor signal output terminal 11 of the first speed device sensor signal are sent to locomotive and prevent wheel pair idling system 17 through 3 filtering of rate signal processing unit, shaping, provide elimination dust, vibration etc. unusually the rate signal after the interference of rate signal to be transfered from one department to another system to air defense.That is to say, four signal input parts of rate signal processing unit 3 are to link to each other with signal output part with first speed pickup 18, second speed sensor 19, third speed sensor 20, the 4th speed pickup 21 respectively, and signal output part prevents that with described locomotive wheel pair idling system 17 respective signal input ends link to each other after the processing of described signal processing unit 3.
As shown in Figure 2, be treatment step to any one road speed sensor signal.In flow process 23, pulse signal high level width, low level width and recurrence interval are calculated respectively.In flow process 24, the recurrence interval that flow process 23 is calculated deposits transmitter register in, if the pulse of this time is judged as normally follow-up, will send pulse with the recurrence interval that flow process 23 is calculated in flow process 28.In flow process 25, calculate dutycycle according to high level width, low level width in the flow process 23, and judge whether dutycycle exceeds the normal upper limit 70% and lower limit 30%, judge with this whether pulse this time is effective impulse, if do not go beyond the scope then redirect execution flow process 28.If go beyond the scope then carry out flow process 26, deposit recurrence interval of last time in transmitter register, override the recurrence interval of this calculating, reach the effect of filtering.In flow process 27, judge whether it is to continue to exceed the pulse duty factor upper and lower bound, if accidental unusual, it is too many, still effective that the recurrence interval that then proves last time can not departed from the current true pulse cycle, can jump to flow process 28 and carry out pulse output.If continue unusually then carry out flow process 27, think that the recurrence interval of last time also is insecure, judge this road rate signal fault, deposit the arbitrarily normal recurrence interval of other No. 3 speed pickups in transmitter register.Reach mutually replaceable, the fault judgement result can be preserved simultaneously, or the fault judgement result is passed to other device in the mode of communication show and as the foundation of other judgement in man-machine interface to get rid of the purpose of expendable speed sensor signal.In flow process 28, next sending the cycle, will carry out shaping through confirming the reliable recurrence interval after the diagnosis filtering, send with 50% dutycycle of standard.
Claims (4)
1. motorcycle active speed-sensing device signal filtering equipment, it comprises device power selection circuit (1), control power circuit (2), rate signal processing unit (3), described device power selection circuit (1) is by D1, D2, D3, totally 4 diodes of D4 forms, it is an auctioneering circuit, it is characterized in that: D1, D2, D3, the anode of D4 respectively with the positive source (12) of first speed pickup (18), the positive source (13) of second speed sensor (19), the positive source (14) of third speed sensor (20), the positive source (15) of the 4th speed pickup (21) links to each other, D1, D2, D3, the negative electrode of D4 is in parallel and link to each other with the positive pole of control power circuit (2).The power-supply system ground end (16) of speed pickup (18), (19), (20), (21) links to each other with the negative pole of control power circuit (2);
Four signal input parts of described rate signal processing unit (3) are to link to each other with signal output part with described first speed pickup (18), second speed sensor (19), third speed sensor (20), the 4th speed pickup (21) respectively, and signal output part prevents that with described locomotive wheel pair idling system (17) respective signal input end links to each other after the processing of described signal processing unit (3).
2. as claim 1 described speed-sensing device signal filtering equipment, wherein said device power selection circuit (1) only with the positive source (15) of the positive source (14) of the positive source (13) of the positive source (12) of first speed pickup (18), second speed sensor (19), third speed sensor (20), the 4th speed pickup (21) in any 1-3 link to each other.
3. method that the motorcycle active speed-sensing signal is filtered, this method comprises the following steps:
A. calculate input pulse signal high level width, low level width and recurrence interval;
B. will the recurrence interval deposit transmitter register in;
C, calculating judge whether dutycycle exceeds the upper and lower bound of normal speed pulse, if the result is not for jumping to step G;
D, if the result of step C is for being that then the recurrence interval with last time deposits transmitter register in;
E, judge whether it is to continue to exceed the pulse duty factor upper and lower bound, if the result is not for jumping to step G;
F, if the result of step e is for being, then judge this road rate signal fault, deposit the arbitrarily normal recurrence interval of other No. 3 speed pickups in transmitter register, the fault judgement result is preserved or the fault judgement result is passed to other device in the mode of communication and show and as the foundation of other judgement in man-machine interface;
G, the recurrence interval of pressing transmitter register in the next one transmission cycle send pulse with 50% dutycycle.
4. as claim 3 described a kind of methods that the motorcycle active speed-sensing signal is filtered, the upper and lower bound that it is characterized in that described normal speed pulse duty factor is respectively 70% and 30%.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100323836A CN101158699A (en) | 2006-10-02 | 2006-10-02 | Motorcycle active speed-sensing device signal filtering equipment and signal filtering method |
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| CNA2006100323836A CN101158699A (en) | 2006-10-02 | 2006-10-02 | Motorcycle active speed-sensing device signal filtering equipment and signal filtering method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104040151A (en) * | 2011-11-14 | 2014-09-10 | 法国大陆汽车公司 | Method for diagnosing a variable reluctance magnetic detection head, and detection circuit |
| CN105807078A (en) * | 2016-03-15 | 2016-07-27 | 株洲南车时代电气股份有限公司 | Speed sensor wiring method |
-
2006
- 2006-10-02 CN CNA2006100323836A patent/CN101158699A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104040151A (en) * | 2011-11-14 | 2014-09-10 | 法国大陆汽车公司 | Method for diagnosing a variable reluctance magnetic detection head, and detection circuit |
| CN104040151B (en) * | 2011-11-14 | 2017-07-18 | 法国大陆汽车公司 | The diagnostic method and detection circuit of VR magnetic spy gauge head |
| CN105807078A (en) * | 2016-03-15 | 2016-07-27 | 株洲南车时代电气股份有限公司 | Speed sensor wiring method |
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Application publication date: 20080409 |