CN202124048U - Intelligent vehicle wheel sensor and intelligent vehicle wheel sensor with self-inspection function - Google Patents
Intelligent vehicle wheel sensor and intelligent vehicle wheel sensor with self-inspection function Download PDFInfo
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- CN202124048U CN202124048U CN2011200396157U CN201120039615U CN202124048U CN 202124048 U CN202124048 U CN 202124048U CN 2011200396157 U CN2011200396157 U CN 2011200396157U CN 201120039615 U CN201120039615 U CN 201120039615U CN 202124048 U CN202124048 U CN 202124048U
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Abstract
The utility model relates to an intelligent vehicle wheel sensor and an intelligent vehicle wheel sensor with the self-inspection function. The intelligent vehicle wheel sensor comprises a permanent magnet, a coil, a magnetic-sensing probe and a signal processing device, wherein the permanent magnet is positioned between two steel rails and in the position close to the inner sides of the steel rails; the coil is enwound on the permanent magnet in an unidirectional manner and can generate induced voltage according to variation of the magnetic field; the magnetic-sensing probe is positioned at the middle point of the connecting line of the S pole and the N pole of the permanent magnet and can output variable voltage according to the variation of the magnetic field; and the signal processing device takes the moment that the output of the magnetic-sensing probe is changed from normal voltage into abnormal voltage as the vehicle wheel arriving moment, takes the moment that the output of the magnetic-sensing probe is changed from abnormal voltage into normal voltage as the vehicle wheel leaving moment, and takes the moment which is between the vehicle wheel arrival moment and the vehicle wheel leaving moment and when the induced voltage generated by the coil is changed from positive potential into negative potential as the arrival moment of the physical center of a vehicle wheel. The intelligent vehicle wheel sensor provided by the utility model can be used for detecting the moment that the physical center of the vehicle wheel arrives accurately without omission, namely, the intelligent vehicle wheel sensor is not influenced by low speed of the vehicle wheel.
Description
Technical field
The utility model relates to safety of railway traffic monitoring and fault early warning system field, but particularly relates to the intelligent vehicle wheel sensor of intelligent vehicle wheel sensor self check.The utility model can thoroughly solve because the jogging of train low speed causes the system equipment great hidden of bringing out of control, really realizes the automation and the intellectuality of system equipment.
Background technology
In order to guarantee the railway transportation production safety; Tiedaobu Transportation Bureau constructively proposes the rail vehicle safe in operation and takes precautions against forewarn system (being called for short " 5T " system), comprises infrared journal temperature detection system, TPDS, freight car rolling bearing early fault rail limit acoustics diagnose system, TFDS and passenger vehicle operation safety monitoring system." 5T " system adopts intellectuality, networking and informationization technology; Realization is carried out detection of dynamic, data centralization, remote monitor and control, information sharing to the situation of operating train; And being aggregated into the Ministry of Railways in real time, each relevant departments of railway just can carry out rational despatching work according to system information like this." 5T " system implementation not only helps improving railway transport capacity, but also can reduce railway servant's working strength, and therefore, " 5T " system is with a wide range of applications.
The equipment of " 5T " system must be equipped with " wheel sensor " and could normally move.Wheel sensor is through the moment (this patent is called wheel physical centre due in constantly with this) directly over physical centre's this wheel sensor of arrival that detects wheel; Thereby for system equipment provides accurate wheel physical centre locating information; Like this; The resulting wheel of the several wheel sensores physical centre due in of system equipment diverse location capable of using carries out COMPREHENSIVE CALCULATING; Thereby determine the running velocity of train, data such as the wheelbase between the adjacent wheel, chassis distance, and then judge the information such as vehicle, a number of train.In addition, system equipment can also utilize the resulting wheel of wheel sensor physical centre due in to control the temperature that infrared probe is gathered axle box, thereby guarantees train operating safety.
The used wheel sensor of prior art all adopts passive sensor; It mainly is to utilize electromagnetic induction principle; The permanent magnet that nd-fe-b is processed places between the coil that is twining, and in the time of directly over train wheel passes through permanent magnet, will cause that the magnetic field of permanent magnet changes; Thereby make the coil two ends produce induced electric motive force, have or not to confirm wheel physical centre due in through what detect this induced electric motive force.
The most fatal weakness of this passive sensor that prior art adopts is: when train running speed is relatively lower; For example; Be lower than under the situation of 5km/h, because the caused changes of magnetic field of wheel movement is very little, thereby the induced electric motive force that coil produces is also just very little; This passive sensor can't detect induced electric motive force, also just can't record wheel physical centre due in.And train must be abideed by the state operation of front signal indication; Thereby through actual conditions such as restarting after low speed is walked or drive slowly, stopped appear in regular meeting; Come and go at the frequent low speed in place of erection of wheel sensores such as marshalling station gangway and to shunt; Like this; Wheel sensor of the prior art usually can occur leaking axle (being the omission wheel), leak (being the omission train), an apportion (being that testing result is two row with train erroneous judgement), do not become car faults such as (being that testing result shows not to be train through wheel sensor); Thereby cause the safety monitoring equipment that links to each other with this wheel sensor out of control, can not normally move, this problem is the serious hidden danger that jeopardizes the railway transportation production safety for a long time.
The utility model content
But the utility model provides the intelligent vehicle wheel sensor of intelligent vehicle wheel sensor self check, can accurately not have to detect wheel physical centre due in with omitting.
The technical scheme of the utility model is following: the intelligent vehicle wheel sensor, and this intelligent vehicle wheel sensor comprises: permanent magnet, coil, magnetosensitive probe, signal processor unit; Wherein,
Said permanent magnet between two rails and near the inboard of a rail wherein, has the S utmost point and the N utmost point;
Said coil, folk prescription are used for the variation generation induced voltage according to the magnetic field of said permanent magnet to being wound on the said permanent magnet;
Said magnetosensitive probe is positioned at the S utmost point of said permanent magnet and the mid point of N utmost point line, is used for the variation output variable voltage according to the magnetic field of said permanent magnet;
Said signal processor unit all is connected with said magnetosensitive probe with said coil, is used for, and becoming very by normal voltage the variable voltage of said magnetosensitive probe, the moment of voltage arrives constantly as wheel; The moment that the variable voltage of said magnetosensitive probe is become normal voltage by unusual voltage is as the wheel departure time; The moment that said wheel arrives constantly and wheel between the departure time, said coil produce induced voltage is changeed negative voltage by positive voltage is as wheel physical centre due in.
The beneficial effect of the utility model is: in the utility model; Because permanent magnet is between two rails and near the inboard of a rail wherein; Magnetosensitive probe is positioned on the line mid point of the S utmost point and the N utmost point of permanent magnet; Under the effect of permanent magnet stationary magnetic field, can export constant normal voltage, when train wheel when rail gets into the magnetic field of permanent magnet, magnetic field will be affected and change; This causes the variable voltage of magnetosensitive probe output to become very voltage by normal voltage, and signal processor unit can be with arriving constantly as wheel constantly; When train wheel left the magnetic field of permanent magnet, magnetic field reverted to the stationary magnetic field, and the variable voltage of magnetosensitive probe output becomes normal voltage by unusual voltage again, and signal processor unit can be with should be constantly as the wheel departure time; Arrive constantly and wheel between the departure time at wheel; Wheel is among the magnetic field of permanent magnet always; This magnetic field is exerted an influence, and coil also produces induced voltage because of the variation in magnetic field, and the Changing Pattern of its induced voltage is: when wheel arrives, be carved into wheel physical centre arrive permanent magnet directly over the moment, wheel physical centre due in; Induced voltage rises to high normal potential by zero level and reduces to zero level again, and this zero level that it dropped to can be described as positive zero level; At wheel physical centre due in, induced voltage is positive zero level; To the wheel departure time, induced voltage rises to zero level again by positive zero potential drop to minimum negative potential from wheel physical centre due in, and the zero level that it was raised to is called the negative zero current potential; In the wheel departure time, induced voltage reaches the negative zero current potential; The output of magnetosensitive probe and coil is real-time to the reaction of changes of magnetic field; The signal processor unit comprehensive application magnetosensitive probe in the utility model and the voltage of coil output; Can arrive at the wheel that magnetosensitive probe records constantly and wheel between the departure time, the induced voltage that coil is produced transfers moment of negative potential to by positive potential, and promptly induced voltage is the moment of positive zero level; As wheel physical centre due in; Like this, the utility model is confirmed wheel physical centre due in through three moment that detect wheel and in magnetic field, move, and then can obtain the precise location information of wheel physical centre; Therefore; The utility model is omitted the probability of wheel physical centre due in can think zero, and pops one's head in to the output voltage of changes of magnetic field owing to having made full use of coil and magnetosensitive, thereby the wheel physical centre due in of measuring also is accurately.
On the basis of technique scheme, the utility model increases following function, improves intelligent degree:
Further, said magnetosensitive probe comprises magnetosensitive probe power supply, is used to the power supply of said magnetosensitive probe.
Further, said signal processor unit is further used for, and the induced voltage of said coil output and the variable voltage of said magnetosensitive probe output are carried out filtering, amplification and analogue to digital conversion.
Further, this intelligent vehicle wheel sensor further comprises memory storage; Said memory storage links to each other with said signal processor unit, is used for, and preserves the induced voltage of said coil output; Preserve the variable voltage of said magnetosensitive probe output.
But the utility model has also proposed the intelligent vehicle wheel sensor of self check, and this intelligent vehicle wheel sensor comprises: permanent magnet, coil, magnetosensitive probe, signal processor unit, System self-test device, fault pre-alarming device; Wherein,
Said permanent magnet between two rails and near the inboard of a rail wherein, has the S utmost point and the N utmost point;
Said coil, folk prescription are used for the variation generation induced voltage according to the magnetic field of said permanent magnet to being wound on the said permanent magnet;
Said magnetosensitive probe is positioned at the S utmost point of said permanent magnet and the mid point of N utmost point line, is used for the variation output variable voltage according to the magnetic field of said permanent magnet;
Said signal processor unit all is connected with said magnetosensitive probe with said coil, is used for, and becoming very by normal voltage the variable voltage of said magnetosensitive probe, the moment of voltage arrives constantly as wheel; The moment that the variable voltage of said magnetosensitive probe is become normal voltage by unusual voltage is as the wheel departure time; The moment that said wheel arrives constantly and wheel between the departure time, said coil produce induced voltage is changeed negative voltage by positive voltage is as wheel physical centre due in;
Said System self-test device links to each other with said signal processor unit, is used for, and the said signal processor unit of accumulative total is judged the number of times of inefficacy continuously; Judge continuously that at said signal processor unit the number of times of inefficacy reaches under the situation of alarm times, send alerting signal to said fault pre-alarming device;
Said fault pre-alarming device is used for, according to said alerting signal, and the diagnostic system problem;
Wherein said signal processor unit judges that situation about losing efficacy comprises: do not determine wheel and arrive constantly; Do not determine the wheel departure time; Do not determine wheel physical centre due between departure time in the said wheel arrival moment and wheel; Described system problem comprises: permanent magnet has fault; Coil has fault; The magnetosensitive probe has fault.
Further, said permanent magnet is the U-shaped permanent magnet.
Description of drawings
The constructional drawing of the intelligent vehicle wheel sensor that Fig. 1 provides for the utility model;
But the constructional drawing of the intelligent vehicle wheel sensor of the self check that Fig. 2 provides for the utility model;
Fig. 3 is the constructional drawing of a specific embodiment of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
The constructional drawing of the intelligent vehicle wheel sensor that Fig. 1 provides for the utility model.As shown in Figure 1, this system comprises: permanent magnet 1, coil 2, magnetosensitive probe 3, signal processor unit 4; Wherein,
Here; Permanent magnet 1 and near the inboard of a rail wherein, is the wheel that moves on the rail in order to be positioned as close between two rails 5; This just can make the wheel of train cut its magnetic induction line to greatest extent; Thereby change the magnetic field of permanent magnet to greatest extent, and then make coil produce maximum induced voltage, also make the variable change of voltage amplitude of magnetosensitive probe output also maximum; Help signal processor unit like this and accurately judge the wheel arrival moment, wheel departure time and wheel physical centre due in, and then accurately judge the locating information of wheel physical centre.This is on rail, to move because of wheel; And the magnetic field of permanent magnet 1 is relatively more weak, if the distance of itself and wheel is far away, for example; Permanent magnet 1 is placed the outside of arbitrary rail; Or be placed on the centre of two rails 5, then can be too far away and cause magnetic field not receive the influence of wheel apart from the wheel of operation because of magnetic field, like this; Coil 2 also just can't produce induced voltage and output variable voltage respectively with magnetosensitive probe 3, and the utility model also just can't detect and obtain wheel physical centre due in.
Certainly; If the magnet that applying a magnetic field is stronger can promptly record wheel physical centre due in wheel distances under situation far away, then also can this magnet be placed the position away from arbitrary rail 5 inboards; For example, place the outside of arbitrary rail 5 or place the centre between the two rails 5.
Here, permanent magnet is the magnet that can keep magnetic for a long time, natural magnetite such as magnetite, and artificial magnet steel such as iron nickel cobalt, Nd-Fe-B magnet steel etc. can be as permanent magnets.Permanent magnet is difficult for loss of excitation, also be difficult for being magnetized, and the polarity of the S utmost point of permanent magnet and the N utmost point can not change, and promptly the magnetic field of permanent magnet can be thought constant.
Folk prescription is to the coil that is wound on the permanent magnet, at the magnetic induction line that does not have wheel cutting permanent magnet, promptly under the magnetic field unmodified situation of permanent magnet; Two ends do not have induced voltage to produce, and at the magnetic induction line that wheel cutting permanent magnet is being arranged, thereby when the magnetic field of permanent magnet is changed; Can change at coil two ends generations induced voltage because of the magnetic flow that passes coil; The number of turn of coil is many more, and the variation in magnetic field is big more, and induced voltage is also just big more.The utility model can promptly use the mode of big number of turn coil through the mode of intensive winding several thousand circle coils, improves the amplitude of induced voltage, thereby improves the sensitivity of this sensor-based system.
The magnetosensitive probe is positioned at the S utmost point of permanent magnet and the mid point of N utmost point line; Promptly be arranged in the magnetic field of permanent magnet, like this, do not get at train wheel under the situation in magnetic field of permanent magnet; The constant magnetic field of permanent magnet can make magnetosensitive probe output constant variables voltage; This constant variables voltage is called normal voltage, and like this, signal processor unit can be judged the magnetic field that train wheel does not get into permanent magnet according to magnetosensitive probe output normal voltage; When the wheel of train gets into the magnetic field of permanent magnet, thus the moment of the magnetic induction line of cutting magnetic field, and magnetic field changes; At this moment, the variable voltage of magnetosensitive probe output also becomes different with it very voltage by normal voltage, this very voltage form can for distinguishing another constant potential of normal voltage; For example, normal voltage is a high level, and very voltage then is low level; Perhaps normal voltage is a low level, and very voltage is high level etc.; Certainly; This very voltage also can for the time voltage that becomes, for example, normal voltage is a high level; Very voltage then for the time sinusoidal waveform or the chopping sea that become; Therefore, signal processor unit can become the very moment of voltage by normal voltage with the output voltage of magnetosensitive probe, and the wheel that gets into magnetic field of permanent magnet as wheel arrives constantly; When wheel leaves the magnetic field of permanent magnet; Wheel is cutting magnetic induction line no longer; Like this, the magnetic field of permanent magnet reverts to original stationary magnetic field, thereby the output of magnetosensitive probe also reverts to normal voltage; Signal processor unit can become moment of normal voltage by unusual voltage with the variable voltage of magnetosensitive probe output, leaves the wheel departure time of magnetic field of permanent magnet as wheel.
Arrive constantly and wheel between the departure time at wheel; It is that wheel physical centre is positioned at directly over the permanent magnet just that a moment is arranged; Be directly over its S utmost point and the N utmost point line mid point, just the moment directly over the magnetosensitive probe, this is wheel physical centre due in constantly.Arrive constantly and wheel between the departure time at wheel; Because the variation of magnetic field of permanent magnet causes the variation of passing the coil flux amount; Can produce induced voltage at the coil two ends, this induced voltage changes according to certain rules, and its Changing Pattern is: when wheel arrives, be carved into wheel physical centre arrival permanent magnet directly over the moment, wheel physical centre due in; Induced voltage rises to high normal potential by zero level and reduces to zero level again; This zero level that it dropped to can be described as positive zero level, and at wheel physical centre due in, induced voltage is positive zero level; To the wheel departure time, induced voltage rises to zero level again by positive zero potential drop to minimum negative potential from wheel physical centre due in, and the zero level that it was raised to is called the negative zero current potential, and in the wheel departure time, induced voltage is the negative zero current potential; , no longer change because magnetic field reverts to original stationary magnetic field after the departure time at wheel, induced voltage also keeps the negative zero current potential constant.This shows; Signal processor unit can arrive constantly and wheel between the departure time at wheel; The moment that the induced voltage of coil is transferred to negative potential by positive potential; Be that induced voltage is the moment of positive zero level, or perhaps induced voltage is by the moment of positive zero level to minimum negative potential transformation, as wheel physical centre due in.
The magnetosensitive probe is positioned at the S utmost point of permanent magnet and the mid point of N utmost point line; Mean that arrive the constantly wheel physical centre due in judged with wheel departure time and the induced voltage that utilizes coil of wheel that the variable voltage that utilizes magnetosensitive probe output is judged is to be directed against the judgement that the variation in same magnetic field is carried out; Therefore, the measured wheel physical centre due in of the utility model is believable.
Because coil is very sensitive to the variation of the caused magnetic flow in magnetic field; In changes of magnetic field; The induced voltage of its output promptly changes, and therefore, it is accurately that the signal processor unit in the utility model utilizes coil to obtain wheel physical centre due in.And owing to just confirm to have accomplished this detection under the situation that signal processor unit need arrive wheel constantly, wheel physical centre due in and wheel departure time all detect; No matter the detection in the arbitrary moment in this three moment goes wrong; Can not think that all this detection is successful; And the detection in three moment to occur the possibility of mistake simultaneously be zero basically, therefore, it is again errorless that the utility model detects wheel physical centre due in.
This shows; In the utility model; Because permanent magnet is between two rails and near the inboard of a rail wherein, the magnetosensitive probe is positioned on the line mid point of the S utmost point and the N utmost point of permanent magnet, under the effect of permanent magnet stationary magnetic field, can export constant normal voltage; When train wheel when rail gets into the magnetic field of permanent magnet; Magnetic field will be affected and change, and this causes the variable voltage of magnetosensitive probe output to become very voltage by normal voltage, and signal processor unit can be with arriving constantly as wheel constantly; When train wheel left the magnetic field of permanent magnet, magnetic field reverted to the stationary magnetic field, and the variable voltage of magnetosensitive probe output becomes normal voltage by unusual voltage again, and signal processor unit can be with should be constantly as the wheel departure time; Arrive constantly and wheel between the departure time at wheel; Wheel is among the magnetic field of permanent magnet always; This magnetic field is exerted an influence, and coil also produces induced voltage because of the variation in magnetic field, and the Changing Pattern of its induced voltage is: when wheel arrives, be carved into wheel physical centre arrive permanent magnet directly over the moment, wheel physical centre due in; Induced voltage rises to high normal potential by zero level and reduces to zero level again, and this zero level that it dropped to can be described as positive zero level; At wheel physical centre due in, induced voltage is positive zero level; To the wheel departure time, induced voltage rises to zero level again by positive zero potential drop to minimum negative potential from wheel physical centre due in, and the zero level that it was raised to is called the negative zero current potential; In the wheel departure time, induced voltage reaches the negative zero current potential; The output of magnetosensitive probe and coil is real-time to the reaction of changes of magnetic field; The signal processor unit comprehensive application magnetosensitive probe in the utility model and the voltage of coil output; Can arrive at the wheel that magnetosensitive probe records constantly and wheel between the departure time, the induced voltage that coil is produced transfers moment of negative potential to by positive potential, and promptly induced voltage is the moment of positive zero level; As wheel physical centre due in; Like this, the utility model is confirmed wheel physical centre due in through three moment that detect wheel and in magnetic field, move, and then can obtain the precise location information of wheel physical centre; Therefore; The utility model is omitted the probability of wheel physical centre due in can think zero, and pops one's head in to the output voltage of changes of magnetic field owing to having made full use of coil and magnetosensitive, thereby the wheel physical centre due in of measuring also is accurately.
Because the utility model is to judge that according to the variation of the output voltage of magnetosensitive probe wheel arrives the moment and wheel departure time; And judge wheel physical centre due in according to the variation of the induced voltage of coil on this basis; This just utilizes magnetosensitive probe and the coil dual sensitivity to changes of magnetic field; For the detection exhaustively and accurately of wheel physical centre due in provides double insurance; Therefore; It is the precise location information of the wheel physical centre due in of the train in the 0-350km/h scope that the utility model does not provide the speed of a motor vehicle with accurately having omission, and promptly the utility model is not influenced by wheel low speed to the detection of wheel physical centre due in.
Magnetosensitive probe in the utility model can comprise magnetosensitive probe power supply, and this magnetosensitive probe power supply is used to the power supply of magnetosensitive probe.Like this, the magnetosensitive probe in the utility model is an active sensor just, and its remolding sensitivity passive sensor can be further improved, and can continue the longer time, helps the utility model any interval long-term use in railway line.
Like this; Permanent magnet in the utility model and coil constitute a passive sensor; And permanent magnet has constituted an active sensor with the magnetosensitive probe, thereby active sensor and passive sensor are combined, and makes the two be in same position; Thereby having guaranteed two sensors to wheel physical centre due in and wheel arrives constantly and the detection of wheel departure time is based on the influence of same wheel to magnetic field, is believable, accurately thereby make the detection information of the utility model.
Certainly, if the coil in the utility model or magnetosensitive probe et out of order, one of promptly passive or active sensor et out of order, another sensor still can work on, and this helps improving the safety and the reliability of the utility model.For example; In the time of can't working when the coil et out of order; The magnetosensitive probe still can make output voltage occur in normal voltage according to the variation in magnetic field and change between voltage very much, and signal supervisory instrument still can detect to such an extent that wheel arrives constantly and the wheel departure time, though signal supervisory instrument can't accurately detect wheel physical centre due in again; Can estimate wheel physical centre due in through signal processor unit, and can not omit.In addition; If magnetosensitive is popped one's head in et out of order and can't be worked; And coil still can normal operation; Arrive constantly and the wheel departure time though can't detect wheel, signal supervisory instrument still can with the induced voltage of coil by low moment of height commentaries on classics as wheel physical centre due in, thereby accurately obtain the locating information of wheel physical centre due in.
In the utility model, signal processor unit is further used for, and the induced voltage of coil output and the output voltage of magnetosensitive probe are carried out filtering, amplification and analogue to digital conversion.
Here; Signal processor unit is through carrying out filtering to the induced voltage of coil and the variable voltage of magnetosensitive probe output; Can eliminate by near the electrified high voltage electric field extraneous white noise and the railway, electromagnetic wave etc. disconnected to the signal processor unit that influence caused of magnetic field of permanent magnet to the erroneous judgement of induced voltage, magnetosensitive probe output voltage, thereby further improve the judging nicety rate of the utility model.
Signal processor unit amplifies the variable voltage of induced voltage and the output of magnetosensitive probe, and it is disconnected further to take precautions against erroneous judgement, improves the accuracy rate of self judging.
Signal processor unit carries out analogue to digital conversion to the variable voltage of induced voltage and the output of magnetosensitive probe, helps the digital applications of the utility model, and further improves the anti-noise ability of the utility model, improves the accuracy rate of judging.
In the utility model, further comprise memory storage; Memory storage links to each other with signal processor unit, is used for, and preserves the induced voltage of coil output; Preserve the variable voltage of magnetosensitive probe output.
Here; System further comprises the memory storage of the variable voltage of storage induced voltage and the output of magnetosensitive probe; Make these data can be used as backup and use, also can under the situation of et out of order, these data be analyzed by the related personnel; Find out guilty culprit, this helps the trouble-free operation of clearing of a fault and system.
But the constructional drawing of the intelligent vehicle wheel sensor of the self check that Fig. 2 provides for the utility model.As shown in Figure 2, this intelligent vehicle wheel sensor comprises: permanent magnet 11, coil 12, magnetosensitive probe 13, signal processor unit 14, System self-test device 16, fault pre-alarming device 17; Wherein,
System self-test device 16 links to each other with signal processor unit, is used for, and the accumulated signal processing equipment is judged the number of times of inefficacy continuously; Judge continuously that at signal processor unit the number of times of inefficacy reaches under the situation of alarm times, send alerting signal to the fault pre-alarming device;
Fault pre-alarming device 17 is used for, according to alerting signal, and the diagnostic system problem; The System self-test device here can transmit information through wired mode with the fault pre-alarming device, also can come transmission information through wireless mode;
Wherein signal processor unit judges that situation about losing efficacy comprises: do not determine wheel and arrive constantly; Do not determine the wheel departure time; Do not determine wheel physical centre due between departure time in the wheel arrival moment and wheel; System problem comprises: permanent magnet has fault; Coil has fault; The magnetosensitive probe has fault.
Comparison diagram 1 can be found out with Fig. 2; But the intelligent vehicle wheel sensor that is somebody's turn to do self check is on the basis of intelligent vehicle wheel sensor shown in Figure 1, further to have increased System self-test device and fault pre-alarming device; Therefore; But the intelligent vehicle wheel sensor of self check shown in Figure 2 has all technical characterictics of intelligent vehicle wheel sensor shown in Figure 1; The 26S Proteasome Structure and Function that is the permanent magnet 1 among permanent magnet 11 and the Fig. 1 among Fig. 2 is identical; The 26S Proteasome Structure and Function of the coil 2 among the coil 12 among Fig. 2 and Fig. 1 is identical, and pop one's head in 3 26S Proteasome Structure and Function of the magnetosensitive probe 13 among Fig. 2 and the magnetosensitive among Fig. 1 is identical, and the 26S Proteasome Structure and Function of the signal processor unit 4 among the signal processor unit 14 among Fig. 2 and Fig. 1 is identical; But intelligent vehicle wheel sensor that should self check can further include the memory storage in the intelligent vehicle wheel sensor shown in Figure 1, and the 26S Proteasome Structure and Function of the memory storage in this memory storage and the intelligent vehicle wheel sensor shown in Figure 1 is also identical.
In the utility model, System self-test device 16 can the accumulated signal processing equipment be judged the number of times of inefficacy continuously, and the signal processor unit here judges that situation about losing efficacy comprises: do not determine wheel and arrive constantly; Do not determine the wheel departure time; Do not determine wheel physical centre due between departure time in the wheel arrival moment and wheel.The pairing failure condition of situation that various judgements were lost efficacy is following:
(1) if determining wheel, signal processor unit do not arrive constantly; Explain that the magnetosensitive probe does not make the variable change of voltage of output because of wheel causes changes of magnetic field; After this, if signal processor unit can detect the wheel departure time, explain that then fault has appearred in the magnetosensitive probe when the inspection vehicle wheel arrives constantly; If the magnetosensitive probe can not detect the wheel departure time, explain that then fault has appearred in magnetosensitive probe or permanent magnet.
(2) if signal processor unit is not determined the wheel departure time; The output voltage that magnetosensitive probe then is described not have to make because of the magnetic field recovery variable change of voltage of output; Before this; If signal processor unit can detect wheel and arrive constantly, explain that then the magnetosensitive probe fault occurred in the wheel departure time.
(3) if signal processor unit is not determined wheel physical centre due in the wheel arrival moment and wheel between the departure time; Explain that then coil does not make induced voltage transfer negative level to by positive level at wheel physical centre due in, therefore can confirm that fault has appearred in coil.
Certainly; Signal processor unit judges that situation about losing efficacy can also comprise that other can not detect wheel physical centre due in the wheel arrival moment and wheel between the departure time; Promptly can not measure the wheel arrival moment, wheel physical centre due in and the situation of wheel departure time successively; This failure conditions possibly be and magnetosensitive probe and permanent magnet between the change of relative position caused, promptly this failure conditions possibly be because the magnetosensitive probe from the S utmost point of permanent magnet and the position of the N utmost point line mid point skew has taken place.
The fault pre-alarming device is after the alerting signal of receiving the System self-test device; Be to judge that according to above-mentioned signal processor unit the situation of inefficacy and the corresponding relation of failure condition come the diagnostic system problem; After diagnosing out system problem; The failure message that the fault pre-alarming device can be real-time or non real-time will record system problem through wired or wireless mode sends, so that in time repair fault.
What the System self-test device was added up is the number of times that signal processor unit is judged inefficacy continuously; But not accidental once or several times judge the number of times that lost efficacy, thereby the utility model is provided with the thresholding time numerical value that a signal processor unit is judged inefficacy continuously, is called alarm times; If the signal processor unit that the System self-test device is added up judges that continuously the number of times of inefficacy reaches alarm times; Then send alerting signal to the fault pre-alarming device, otherwise, alerting signal do not sent.If the number of times that the signal processor unit of System self-test device accumulative total is judged inefficacy continuously is when being less than alarm times; Signal processor unit promptly rejudges correctly; Then the System self-test device can be judged the signal processor unit that is added up the number of times zero clearing of inefficacy continuously, so that add up again next time.Certainly, this moment, the System self-test device also can not zero clearing.
The utility model is owing to be provided with System self-test device and fault pre-alarming device; Therefore; Cause when detecting error thereby cause in railway line vibration that position between active sensor and the passive sensor is moved, for example, wheel physical centre due in no longer arrives constantly and wheel between the departure time time at wheel; System self-test device and fault pre-alarming device just can come out this fault detection, change thereby in time report to the police.
But in the intelligent vehicle wheel sensor of intelligent vehicle wheel sensor above-mentioned shown in Figure 1 that the utility model provides and self check shown in Figure 2; All used permanent magnet; A preferred embodiment of this permanent magnet is the U-shaped permanent magnet, and like this, the distance of its S utmost point and the N utmost point is closer; Thereby the magnetic field of permanent magnet is also more intense, and the magnetosensitive probe that is positioned at the S utmost point and N utmost point line mid point is also placed than being easier to.Certainly, the permanent magnet in the utility model also can be other forms of permanent magnet.
Each device in the utility model all utilizes low temperature material to make, and therefore, the utility model can tolerate the harsh natural conditions of railway, can tolerate low temperature.
Fig. 3 is the constructional drawing of a specific embodiment of the utility model.As shown in Figure 3; N sensor between two rails near the inboard diverse location of arbitrary rail; Each sensor includes active sensor partial sum passive sensing part; Passive sensing part wherein is made up of permanent magnet and intensive winding coil on it, and the active sensor part is made up of permanent magnet and magnetosensitive probe, and the magnetosensitive probe is included as the magnetosensitive probe power supply of magnetosensitive probe power supply.Active sensor partial sum passive sensing in the same sensor partly utilizes same permanent magnet, and the magnetosensitive probe in the active sensor part is positioned at the S utmost point of this permanent magnet and the mid point of N utmost point line.
This n signal of sensor is received and is handled by signal regulating device 302, and promptly the induced voltage partly exported of the variable voltage partly exported of active sensor and passive sensing is received and processing by signal regulating device 302.The mode that signal regulating device receives signal can be wired mode, also can be wireless mode.Signal regulating device can comprise filtering, amplification etc. to Signal Processing.
After 302 pairs of signal conditioning of signal regulating device finished, the signal of output was again by 303 receptions of analog-digital commutator.After analog-digital commutator carries out analog-to-digital conversion process to signal, realized that signal is by the conversion of analog signal to digital signal.The digital signal of its output is handled by signal main control unit 304.
Among Fig. 3, signal regulating device and analog-digital commutator are one, in fact, when using the utility model, also can utilize a plurality of signal regulating devices and a plurality of analog-digital commutator.
The processing that 304 pairs of digital signals of signal main control unit are carried out comprises: becoming very by normal voltage the variable voltage of magnetosensitive probe in the active sensor part, the moment of voltage arrives constantly as wheel; The moment that the variable voltage of magnetosensitive probe is become normal voltage by unusual voltage is as the wheel departure time; With wheel arrives constantly and wheel between the departure time, coil produces in the passive sensing part induced voltage change negative voltage by positive voltage moment as wheel physical centre due in.
The signal main control unit is determined wheel physical centre due in; Promptly send notice to signal triggering device 305; Make the signal triggering device produce energizing signal, and energizing signal is sent to railway monitoring equipment 306, like this; The railway monitoring equipment just can be known this wheel physical centre due in, and has confirmed the locating information of wheel physical centre according to this wheel physical centre due in.
This shows that the signal regulating device 302 among Fig. 3, analog-digital commutator 303, signal main control unit 304 and signal triggering device 305 have been formed the signal processor unit among Fig. 1 and Fig. 2 jointly.
Also further comprise memory storage 307 among Fig. 3, be used for preserving the variable voltage of magnetosensitive probe output in induced voltage and the active sensor part of passive sensing part coil output.
Further comprised System self-test device 308 and fault pre-alarming device 309 among Fig. 3, wherein, the System self-test device is used for, and the accumulated signal main control unit is judged the number of times of inefficacy continuously; Judge continuously that at the signal main control unit number of times of inefficacy reaches under the situation of alarm times, send alerting signal to the fault pre-alarming device;
The fault pre-alarming device is used for, according to alerting signal, and the diagnostic system problem; And send the failure message that records system problem to railway monitoring equipment 306; Thereby make the railway monitoring equipment can be according to this failure message, in time failure judgement source and maintenance policy, and then fault repaired.
Wherein, the signal main control unit judges that situation about losing efficacy comprises: do not determine wheel and arrive constantly; Do not determine the wheel departure time; Do not determine wheel physical centre due between departure time in the wheel arrival moment and wheel; The system problem that the fault pre-alarming device is diagnosed out comprises: permanent magnet has fault; Coil has fault; The magnetosensitive probe has fault.
In the utility model; The qualification of signal processor unit, System self-test device, fault pre-alarming device is functional or logicality, those skilled in the art carries out additions and deletions, the function of each device is equal to replacement, reconfigures etc. the quantity of device on this basis, forms new technical scheme; Technical scheme shown in Figure 3 be equal to replacement on Fig. 1 and Fig. 2 basis and reconfigure after a new technical scheme obtaining; Other new technical scheme for example merges signal processor unit and memory storage etc. and function thereof, obtains a new device; Thereby reduce the quantity of device, and reconfigured the function of device; Signal regulating device among Fig. 3 and analog-to-digital conversion module are integrated, obtained pretreatment module etc., and its function is reconfigured, or the like.No matter which kind of the scheme that the utility model is provided carried out and is equal to replacement, reconfigures, as long as resulting new technical scheme can reach the technique effect of the utility model, all within the protection domain of the utility model.
This shows, the utlity model has following advantage:
(1) in the utility model; Because permanent magnet is between two rails and near the inboard of a rail wherein; Magnetosensitive probe is positioned on the line mid point of the S utmost point and the N utmost point of permanent magnet; Under the effect of permanent magnet stationary magnetic field, can export constant normal voltage, when train wheel when rail gets into the magnetic field of permanent magnet, magnetic field will be affected and change; This causes the variable voltage of magnetosensitive probe output to become very voltage by normal voltage, and signal processor unit can be with arriving constantly as wheel constantly; When train wheel left the magnetic field of permanent magnet, magnetic field reverted to the stationary magnetic field, and the variable voltage of magnetosensitive probe output becomes normal voltage by unusual voltage again, and signal processor unit can be with should be constantly as the wheel departure time; Arrive constantly and wheel between the departure time at wheel; Wheel is among the magnetic field of permanent magnet always; This magnetic field is exerted an influence, and coil also produces induced voltage because of the variation in magnetic field, and the Changing Pattern of its induced voltage is: when wheel arrives, be carved into wheel physical centre arrive permanent magnet directly over the moment, wheel physical centre due in; Induced voltage rises to high normal potential by zero level and reduces to zero level again, and this zero level that it dropped to can be described as positive zero level; At wheel physical centre due in, induced voltage is positive zero level; To the wheel departure time, induced voltage rises to zero level again by positive zero potential drop to minimum negative potential from wheel physical centre due in, and the zero level that it was raised to is called the negative zero current potential; In the wheel departure time, induced voltage reaches the negative zero current potential; The output of magnetosensitive probe and coil is real-time to the reaction of changes of magnetic field; The signal processor unit comprehensive application magnetosensitive probe in the utility model and the voltage of coil output; Can arrive at the wheel that magnetosensitive probe records constantly and wheel between the departure time, the induced voltage that coil is produced transfers moment of negative potential to by positive potential, and promptly induced voltage is the moment of positive zero level; As wheel physical centre due in; Like this, the utility model is confirmed wheel physical centre due in through three moment that detect wheel and in magnetic field, move, and then can obtain the precise location information of wheel physical centre; Therefore; The utility model is omitted the probability of wheel physical centre due in can think zero, and pops one's head in to the output voltage of changes of magnetic field owing to having made full use of coil and magnetosensitive, thereby the wheel physical centre due in of measuring also is accurately.
(2) because the utility model is to judge that wheel arrives constantly and the wheel departure time according to the variation of the output voltage of magnetosensitive probe; And judge wheel physical centre due in according to the variation of the induced voltage of coil on this basis; This just utilizes magnetosensitive probe and the coil dual sensitivity to changes of magnetic field; For the detection exhaustively and accurately of wheel physical centre due in provides double insurance; Therefore, it is the precise location information of the wheel physical centre of the train in the 0-350km/h scope that the utility model does not provide the speed of a motor vehicle with accurately having omission, and promptly the utility model is not influenced by wheel low speed to the detection of wheel physical centre due in.
(3) in the utility model; Permanent magnet is positioned between two rails, a side rail inboard; Can make the wheel of train cut its magnetic induction line to greatest extent, thereby change the magnetic field of permanent magnet to greatest extent, and then make coil produce maximum induced voltage; Also make the change of voltage amplitude of magnetosensitive probe output obvious, help the precise location information that signal processor unit is accurately judged the wheel arrival moment, wheel departure time and wheel physical centre due in like this.
(4) the utility model promptly uses the mode of big number of turn coil through the mode of intensive winding around, improves the amplitude of induced voltage, thereby improves the sensitivity of this sensor-based system.
(5) the magnetosensitive probe that uses of the utility model just is active sensor, and its remolding sensitivity passive sensor can be further improved, and can continue the longer time, and any interval can long-term use in the railway scope to help the utility model.
(6) in the utility model; Signal processor unit is through carrying out filtering to the induced voltage of coil and the output voltage of magnetosensitive probe; Can eliminate by near the high voltage electric field extraneous white noise and the electrified railway, electromagnetic wave etc. disconnected to the signal processor unit that influence caused of magnetic field of permanent magnet to the erroneous judgement of induced voltage, magnetosensitive probe output voltage, thereby further improve the judging nicety rate of the utility model.
(7) further comprise memory storage in the utility model; Store the output voltage of induced voltage and magnetosensitive probe; These data can be used as backup and use, and also can under the situation of et out of order, by the related personnel these data be analyzed; Find out guilty culprit, this helps the trouble-free operation of clearing of a fault and system.
(8) if the coil in the utility model or magnetosensitive probe et out of order, one of promptly passive or active sensor et out of order, another sensor still can work on, this helps guaranteeing the safety in utilization and the reliability of the utility model.
(9) the utility model is owing to be provided with System self-test device and fault pre-alarming device; Therefore; Because thereby line vibration causes that position between active sensor and the passive sensor is moved and cause when detecting error, for example, wheel physical centre due in no longer arrives constantly and wheel between the departure time time at wheel; System self-test device and fault pre-alarming device just can come out this fault detection, change thereby in time report to the police.
Be merely the preferred embodiment of the utility model in sum, or not all within the spirit and principle of the utility model in order to restriction the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. the intelligent vehicle wheel sensor is characterized in that, this intelligent vehicle wheel sensor comprises: permanent magnet, coil, magnetosensitive probe, signal processor unit; Wherein,
Said permanent magnet between two rails and near the inboard of a rail wherein, has the S utmost point and the N utmost point;
Said coil, folk prescription are used for the variation generation induced voltage according to the magnetic field of said permanent magnet to being wound on the said permanent magnet;
Said magnetosensitive probe is positioned at the S utmost point of said permanent magnet and the mid point of N utmost point line, is used for the variation output variable voltage according to the magnetic field of said permanent magnet;
Said signal processor unit all is connected with said magnetosensitive probe with said coil, is used for, and becoming very by normal voltage the variable voltage of said magnetosensitive probe, the moment of voltage arrives constantly as wheel; The moment that the variable voltage of said magnetosensitive probe is become normal voltage by unusual voltage is as the wheel departure time; The moment that said wheel arrives constantly and wheel between the departure time, said coil produce induced voltage is changeed negative voltage by positive voltage is as wheel physical centre due in.
2. intelligent vehicle wheel sensor according to claim 1 is characterized in that, said magnetosensitive probe comprises magnetosensitive probe power supply, is used to the power supply of said magnetosensitive probe.
3. intelligent vehicle wheel sensor according to claim 1 is characterized in that said signal processor unit is further used for, and the induced voltage of said coil output and the variable voltage of said magnetosensitive probe are carried out filtering, amplification and analogue to digital conversion.
4. according to claim 1,2 or 3 described intelligent vehicle wheel sensors, it is characterized in that this intelligent vehicle wheel sensor further comprises memory storage; Said memory storage links to each other with said signal processor unit, is used for, and preserves the induced voltage of said coil output; Preserve the variable voltage of said magnetosensitive probe output.
5. but the intelligent vehicle wheel sensor of self check is characterized in that, this intelligent vehicle wheel sensor comprises: permanent magnet, coil, magnetosensitive probe, signal processor unit, System self-test device, fault pre-alarming device; Wherein,
Said permanent magnet between two rails and near the inboard of a rail wherein, has the S utmost point and the N utmost point;
Said coil, folk prescription are used for the variation generation induced voltage according to the magnetic field of said permanent magnet to being wound on the said permanent magnet;
Said magnetosensitive probe is positioned at the S utmost point of said permanent magnet and the mid point of N utmost point line, is used for the variation output variable voltage according to the magnetic field of said permanent magnet;
Said signal processor unit all is connected with said magnetosensitive probe with said coil, is used for, and becoming very by normal voltage the variable voltage of said magnetosensitive probe, the moment of voltage arrives constantly as wheel; The moment that the variable voltage of said magnetosensitive probe is become normal voltage by unusual voltage is as the wheel departure time; The moment that said wheel arrives constantly and wheel between the departure time, said coil produce induced voltage is changeed negative voltage by positive voltage is as wheel physical centre due in;
Said System self-test device links to each other with said signal processor unit, is used for, and the said signal processor unit of accumulative total is judged the number of times of inefficacy continuously; Judge continuously that at said signal processor unit the number of times of inefficacy reaches under the situation of alarm times, send alerting signal to said fault pre-alarming device;
Said fault pre-alarming device is used for, according to said alerting signal, and the diagnostic system problem;
Wherein said signal processor unit judges that situation about losing efficacy comprises: do not determine wheel and arrive constantly; Do not determine the wheel departure time; Do not determine wheel physical centre due between departure time in the said wheel arrival moment and wheel; Described system problem comprises: permanent magnet has fault; Coil has fault; The magnetosensitive probe has fault.
6. according to claim 1,2,3 or 5 described intelligent vehicle wheel sensors, it is characterized in that said permanent magnet is the U-shaped permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200396157U CN202124048U (en) | 2011-02-16 | 2011-02-16 | Intelligent vehicle wheel sensor and intelligent vehicle wheel sensor with self-inspection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200396157U CN202124048U (en) | 2011-02-16 | 2011-02-16 | Intelligent vehicle wheel sensor and intelligent vehicle wheel sensor with self-inspection function |
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| CN202124048U true CN202124048U (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200396157U Expired - Fee Related CN202124048U (en) | 2011-02-16 | 2011-02-16 | Intelligent vehicle wheel sensor and intelligent vehicle wheel sensor with self-inspection function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487071A (en) * | 2013-10-11 | 2014-01-01 | 成都森川铁路车辆技术开发有限公司 | Intelligent sensor for train wheels |
| CN106428111A (en) * | 2016-10-31 | 2017-02-22 | 重庆微标科技股份有限公司 | Train wheel detection method and device |
| CN109188319A (en) * | 2018-10-18 | 2019-01-11 | 国网山东省电力公司潍坊供电公司 | A kind of hand-held alternating current-direct current detection of magnetic field instrument |
| CN110426217A (en) * | 2019-08-09 | 2019-11-08 | 哈尔滨市科佳通用机电股份有限公司 | A kind of fault handling method based on wheel sensor signal processing unit |
| RU2706851C1 (en) * | 2018-12-07 | 2019-11-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Power supply source of railway automation devices |
| RU2758532C1 (en) * | 2021-04-01 | 2021-10-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Electric power supply for training devices of railway automation |
| RU2763039C1 (en) * | 2021-04-28 | 2021-12-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Power supply device for reduced non-training consumers of railways (options) |
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2011
- 2011-02-16 CN CN2011200396157U patent/CN202124048U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487071A (en) * | 2013-10-11 | 2014-01-01 | 成都森川铁路车辆技术开发有限公司 | Intelligent sensor for train wheels |
| CN106428111A (en) * | 2016-10-31 | 2017-02-22 | 重庆微标科技股份有限公司 | Train wheel detection method and device |
| CN109188319A (en) * | 2018-10-18 | 2019-01-11 | 国网山东省电力公司潍坊供电公司 | A kind of hand-held alternating current-direct current detection of magnetic field instrument |
| RU2706851C1 (en) * | 2018-12-07 | 2019-11-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Power supply source of railway automation devices |
| CN110426217A (en) * | 2019-08-09 | 2019-11-08 | 哈尔滨市科佳通用机电股份有限公司 | A kind of fault handling method based on wheel sensor signal processing unit |
| CN110426217B (en) * | 2019-08-09 | 2020-09-11 | 哈尔滨市科佳通用机电股份有限公司 | Fault processing method based on wheel sensor signal processing device |
| RU2758532C1 (en) * | 2021-04-01 | 2021-10-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Electric power supply for training devices of railway automation |
| RU2763039C1 (en) * | 2021-04-28 | 2021-12-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" | Power supply device for reduced non-training consumers of railways (options) |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20140216 |