CN205138414U - Three coil maglev train gap measuring apparatus singly pop one's head in with fault locating function - Google Patents
Three coil maglev train gap measuring apparatus singly pop one's head in with fault locating function Download PDFInfo
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- CN205138414U CN205138414U CN201520870229.0U CN201520870229U CN205138414U CN 205138414 U CN205138414 U CN 205138414U CN 201520870229 U CN201520870229 U CN 201520870229U CN 205138414 U CN205138414 U CN 205138414U
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Abstract
The utility model provides a three coil maglev train gap measuring apparatus singly pop one's head in with fault locating function, measuring device comprises single probe, has 3 detecting coils (L1, L2 and L3) in the probe, 3 the size of individual detecting coil (L1, L2 and L3) and around to the same, and it is coincident completely on the space, the input of three detecting coil (L1, L2 and L3) is associative through three controllable high frequency switch (K1, K2 and K3) and three high frequency signal source (S1, S2 and S3) respectively, the output of three detecting coil (L1, L2 and L3) links to each other with mutually independent signal detection circuit (PS1, PS2 and PS3) respectively, controllable high frequency switch and signal detection circuit still link to each other with time schedule controller (T) simultaneously, three signal detection circuit (PS1, PS2 and PS3) exports three independent air gap detected value, and signal detection circuit output is still continuous with the input of failure diagnosis unit (D).
Description
Technical field
The utility model relates to a kind of gap measuring apparatus with fault location function, especially a kind of magnetic floating train suspending gap non-contact measurement apparatus.
Background technology
Magnetic-levitation train keeps train stable suspersion by the electric current in suspension control system adjustment levitating electromagnet, suspension air gap measurement mechanism can realize the suspension air gap detected in real time non-contactly between train electromagnet and track, gives suspension controller simultaneously and carries out closed-loop control.Therefore the precision of measurement of air gap device and reliability directly affect the performance of suspension control system, when any reason causes measurement of air gap device output abnormality, all the dynamic property of train suspension control system will be affected, reduce the riding comfort of train, even aggravate train rail coupled vibration, cause control system to collapse, jeopardize train operating safety.From the angle improving train operating safety, wish that measurement mechanism can have Redundancy Design, if can position fault when there is simple fault.
Existing magnetic floating train suspending measurement of air gap many employings No-contact Displacement Measurement device (air gap sensors), the normal list that adopts is popped one's head in or dual probe two kinds of modes.Only comprise a magnetic test coil in the probe of single probe air gap sensors, only export a road testing result, sensor self is without diagnostic function.Be generally in another kind of dual probe air gap sensors and realize self-diagnostic function, normal employing twin coil detection method, containing a magnetic test coil in each probe, for avoiding the magnetic Field Coupling between two probe coils, generally two probe coils are arranged on position apart from each other, and two probe coils generally adopt the signal source of different frequency, and when there is a road fault in two Coil Detector passages, which fault cannot be differentiated, can not position fault.
The main deficiency of present technology is exactly only have a testing result when unicoil detects in single probe, sensor self is without diagnostic function, suspension controller cannot judge that whether sensor detection results is correct, will directly cause suspension control system disabler when sensor self breaks down; And be the interference that between reduction by two coil, magnetic coupling is brought during twin coil detection, must maintain a certain distance between two coils, make sensor probe size become large inconvenience installation even cannot install by space constraint, and two magnetic coupling between coil can not eliminate completely, the testing result of two magnetic test coils affects by duty each other.Although two coil electrical quantitys are identical in addition, but be magnetic interference between reduction by two coil, the frequency of signal source can not be identical, cause the parameter of testing circuit different, the complicacy of sensor is increased, useful information cannot be differentiated when there is single channel fault simultaneously, to fault, position can not occur and positioning.
Utility model content
The purpose of this utility model is to provide a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function, this measurement mechanism only has a detection probe, and three tunnels independently suspension air gap value can be exported, simultaneous measuring apparatus has fault location function, accurately can locate when there is single channel fault to fault.
The utility model is for realizing its invention order, and the technical scheme adopted is:
A kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function, comprise the controlled HF switch be connected with high-frequency signal source on car body, the probe coil be connected with controlled HF switch, the signal deteching circuit be connected with probe coil, the self-diagnosis unit switches be connected with signal deteching circuit; It is characterized in that, measurement mechanism is made up of single probe, has 3 magnetic test coils (L1, L2 and L3) in probe; The size of 3 magnetic test coils (L1, L2 and L3) with around to identical, and spatially to overlap completely; The input end of three magnetic test coils (L1, L2 and L3) is connected respectively by three controlled HF switch (K1, K2 and K3) and three high-frequency signal sources (S1, S2 and S3); The output terminal of three magnetic test coils (L1, L2 and L3) is connected with separate signal deteching circuit (PS1, PS2 and PS3) respectively; Controlled HF switch and signal deteching circuit are also connected with time schedule controller (T) simultaneously; Three signal deteching circuits (PS1, PS2 and PS3) export three independently gap measurement values, signal deteching circuit exports and is also connected with the input end of failure diagnosis unit (D), when there is single channel detection failure, failure diagnosis unit exports localization of fault information, indicates the sense channel position of breaking down.
Each high-frequency signal source is connected with corresponding magnetic test coil through corresponding controlled HF switch, and three high-frequency signal sources (S1, S2 and S3) are separate, and its frequency can be the same or different.Magnetic test coil arrangement concrete structure is: three magnetic test coil sizes are identical, around to identical, two coil space overlaps, have identical electrical quantity.Three gate-controlled switches (K1, K2 and K3) are controlled by time schedule controller (T) simultaneously, and only have a switch to close in random time section, namely only have a magnetic test coil in running order, another two magnetic test coils are in off state.Three signal deteching circuits (PS1, PS2 and PS3) are controlled by time schedule controller (T) simultaneously, only when respective switch closes, signal deteching circuit just detects the signal of corresponding magnetic test coil, and three magnetic test coils and three signal deteching circuit timesharing detect three independently gap widths.In single probe, any one magnetic test coil testing result does not affect by another two coil working situations, independent mutually between the output of three signal deteching circuits (PS1, PS2 and PS3).The output of three signal deteching circuits (PS1, PS2 and PS3) is connected with the input end of failure diagnosis unit (D), failure diagnosis unit (D) exports the diagnostic signal characterizing measurement mechanism duty, when there is single channel fault, can point out to there is the channel position that fault occurs fault location function.Effective true gap width still can be provided when single channel occurring and losing efficacy, there is redundancy feature.
Like this, the duty of three magnetic test coils is subject to the control of three controlled HF switch, the logic level sent by time schedule controller can make three coil time-sharing works, when time schedule controller (T) sends effective logic level, gate-controlled switch K1 is made to close the t time, and at this moment between when K2 and K3 disconnects in section, magnetic test coil L1 is by the excitation of high-frequency signal source S1, be in normal operating conditions, effective logic level that its signal deteching circuit is also subject to time schedule controller controls normal work, thus this road signal exports current detection value.And now due to K switch 2 and K3 not closed, therefore magnetic test coil L2 and L3 opens a way, working coil L1 cannot produce induction current in L2 and the L3 coil of open circuit, therefore L2 and L3 coil can not affect the space distribution in L1 coil working magnetic field, L2 and L3 coil also can not produce magnetic interference to the external space when opening a way and not working simultaneously.Now passage 2 and passage 3 exported the detected value in a upper cycle.In like manner, when K2 closes K1 and K3 disconnect, K3 close and K1 and K2 disconnect time three coils duty similarly.Therefore three magnetic test coils and three signal deteching circuit timesharing detect three air gap signals, export glitch-free three tunnel independence air gap values mutually.
Because the frequency of operation of eddy current sensor can be arranged on more than 2MHz, and the frequency of operation of suspension controller is no more than 20KHz, the frequency of operation of driving source is more than 100 times of final required effective clearance signal as can be seen here, therefore the turn-on cycle of HF switch is suitably set, two-way testing result can be made all to meet the Signal Regulation requirement of suspension controller.
Compared with prior art, the beneficial effects of the utility model are:
One, by three magnetic test coils, spatially arranged superposed is in single probe, and compare triple coil and be independently arranged in the probe size greatly reducing sensor in three probes, convenient installation also can reduce costs;
Two, have three independently magnetic test coil and three signal deteching circuits in sensor, by timesharing detection control, three independently between gap measurement coil without magnetic Field Coupling, sensor can export three independently gap measurement values;
Three, failure diagnosis unit is passed through, sensor can carry out comprehensive evaluation according to three road gap measurement results to sensor self, when when there is single channel fault, other two-way is normal, failure diagnosis unit can judge the channel position broken down, export localization of fault signal, suspension controller selects correct gap width according to sensor fault positioning signal, failure code is reported On-Board Diagnostics (OBD) network to carry out sensor fault diagnosis report simultaneously.Effective true gap width still can be provided when single channel occurring and losing efficacy, there is redundancy feature.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the arrangement of three magnetic test coils of the utility model embodiment and the schematic diagram of electric principle thereof.
Fig. 2 is the electrical principle structural representation of the utility model embodiment.
Fig. 3 is the steering logic schematic diagram that the time schedule controller of the utility model embodiment exports.
Embodiment
Fig. 1 and Fig. 2 illustrates, a kind of embodiment of the present utility model is: comprise the controlled HF switch be connected with high-frequency signal source on car body, the probe coil be connected with controlled HF switch, the signal deteching circuit be connected with probe coil, the self-diagnosis unit switches be connected with signal deteching circuit; It is characterized in that, measurement mechanism is made up of single probe, has 3 magnetic test coils (L1, L2 and L3) in probe; The size of 3 magnetic test coils (L1, L2 and L3) with around to identical, and spatially to overlap completely; The input end of three magnetic test coils (L1, L2 and L3) is connected respectively by three controlled HF switch (K1, K2 and K3) and three high-frequency signal sources (S1, S2 and S3); The output terminal of three magnetic test coils (L1, L2 and L3) is connected with separate signal deteching circuit (PS1, PS2 and PS3) respectively; Controlled HF switch and signal deteching circuit are also connected with time schedule controller (T) simultaneously; Three signal deteching circuits (PS1, PS2 and PS3) export three independently gap measurement values, signal deteching circuit exports and is also connected with the input end of failure diagnosis unit (D), when there is single channel detection failure, failure diagnosis unit exports localization of fault information, indicates the sense channel position of breaking down.
Fig. 3 illustrates, time schedule controller of the present utility model controls three controlled HF switch (K1, K2 and K3) simultaneously, three switches are alternately closed, phase 120 degree, only a switch is closed in the same time period, namely only have a magnetic test coil in running order in the same time period, the control signal that time schedule controller sends gives corresponding detecting signal unit simultaneously, only have the corresponding testing circuit when coil is in running order just to carry out signal extraction detection, thus three coils and three signal deteching circuit timesharing detect output three independently gap width.
Each high-frequency signal source is connected with corresponding magnetic test coil through corresponding controlled HF switch, and three high-frequency signal sources (S1, S2 and S3) are separate, and its frequency can be the same or different.Magnetic test coil arrangement concrete structure is: three magnetic test coil sizes are identical, around to identical, two coil space overlaps, have identical electrical quantity.Three gate-controlled switches (K1, K2 and K3) are controlled by time schedule controller (T) simultaneously, and only have a switch to close in random time section, namely only have a magnetic test coil in running order, another two magnetic test coils are in off state.Three signal deteching circuits (PS1, PS2 and PS3) are controlled by time schedule controller (T) simultaneously, only when respective switch closes, signal deteching circuit just detects the signal of corresponding magnetic test coil, and three magnetic test coils and three signal deteching circuit timesharing detect three independently gap widths.In single probe, any one magnetic test coil testing result does not affect by another two coil working situations, independent mutually between the output of three signal deteching circuits (PS1, PS2 and PS3).The output of three signal deteching circuits (PS1, PS2 and PS3) is connected with the input end of failure diagnosis unit (D), failure diagnosis unit (D) exports the diagnostic signal characterizing measurement mechanism duty, when there is single channel fault, can point out to there is the channel position that fault occurs fault location function.Effective true gap width still can be provided when single channel occurring and losing efficacy, there is redundancy feature.
Claims (7)
1. one kind has the list probe triple coil magnetic-levitation train gap measuring apparatus of fault location function, comprise the controlled HF switch be connected with high-frequency signal source on car body, the probe coil be connected with controlled HF switch, the signal deteching circuit be connected with probe coil, the self-diagnosis unit switches be connected with signal deteching circuit; It is characterized in that, measurement mechanism is made up of single probe, has 3 magnetic test coils (L1, L2 and L3) in probe; The size of 3 magnetic test coils (L1, L2 and L3) with around to identical, and spatially to overlap completely; The input end of three magnetic test coils (L1, L2 and L3) is connected respectively by three controlled HF switch (K1, K2 and K3) and three high-frequency signal sources (S1, S2 and S3); The output terminal of three magnetic test coils (L1, L2 and L3) is connected with separate signal deteching circuit (PS1, PS2 and PS3) respectively; Controlled HF switch and signal deteching circuit are also connected with time schedule controller (T) simultaneously; Three signal deteching circuits (PS1, PS2 and PS3) export three independently gap measurement values, signal deteching circuit exports and is also connected with the input end of failure diagnosis unit (D), when there is single channel detection failure, failure diagnosis unit exports localization of fault information, indicates the sense channel position of breaking down.
2. a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function according to claim 1, it is characterized in that: the concrete structure that described controlled HF switch is connected with high-frequency signal source and magnetic test coil is: each high-frequency signal source is connected with corresponding magnetic test coil through corresponding controlled HF switch, three high-frequency signal sources (S1, S2 and S3) are separate, and its frequency can be the same or different.
3. a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function according to claim 1, it is characterized in that: described magnetic test coil arrangement concrete structure is: three magnetic test coil sizes are identical, around to identical, two coil space overlaps, have identical electrical quantity.
4. a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function according to claim 1, it is characterized in that: described three gate-controlled switches (K1, K2 and K3) are controlled by time schedule controller (T) simultaneously, a switch is only had to close in random time section, namely only have a magnetic test coil in running order, another two magnetic test coils are in off state.
5. a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function according to claim 1, it is characterized in that: described three signal deteching circuits (PS1, PS2 and PS3) are controlled by time schedule controller (T) simultaneously, only when respective switch closes, signal deteching circuit just detects the signal of corresponding magnetic test coil, and three magnetic test coils and three signal deteching circuit timesharing detect three independently gap widths.
6. a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function according to claim 1, it is characterized in that: in described single probe, any one magnetic test coil testing result does not affect by another two coil working situations, independent mutually between the output of three signal deteching circuits (PS1, PS2 and PS3).
7. a kind of list probe triple coil magnetic-levitation train gap measuring apparatus with fault location function according to claim 1, it is characterized in that: the output of described three signal deteching circuits (PS1, PS2 and PS3) is connected with the input end of failure diagnosis unit (D), failure diagnosis unit (D) exports the diagnostic signal characterizing measurement mechanism duty, when there is single channel fault, can point out to there is the channel position that fault occurs fault location function; Effective true gap width still can be provided when single channel occurring and losing efficacy, there is redundancy feature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520870229.0U CN205138414U (en) | 2015-11-03 | 2015-11-03 | Three coil maglev train gap measuring apparatus singly pop one's head in with fault locating function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520870229.0U CN205138414U (en) | 2015-11-03 | 2015-11-03 | Three coil maglev train gap measuring apparatus singly pop one's head in with fault locating function |
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| CN205138414U true CN205138414U (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333810A (en) * | 2015-11-03 | 2016-02-17 | 西南交通大学 | Low-speed magnetic suspension train gap sensor in three-probe time sharing detection |
| CN105352424A (en) * | 2015-11-03 | 2016-02-24 | 西南交通大学 | Single-probe three-coil maglev train gap sensor with fault location function |
-
2015
- 2015-11-03 CN CN201520870229.0U patent/CN205138414U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333810A (en) * | 2015-11-03 | 2016-02-17 | 西南交通大学 | Low-speed magnetic suspension train gap sensor in three-probe time sharing detection |
| CN105352424A (en) * | 2015-11-03 | 2016-02-24 | 西南交通大学 | Single-probe three-coil maglev train gap sensor with fault location function |
| CN105333810B (en) * | 2015-11-03 | 2018-01-05 | 西南交通大学 | The probe timesharing detection medium-and low-speed maglev train gap sensor of one kind three |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20181103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |