JP2004173399A - Idle rotation and skid detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus which detects idle rotation and skid ranging from large one to small one slip with reliability. <P>SOLUTION: The idle rotation and skid detector comprises a counter 11 which counts the number of pulses of a multi-axle speed generator; a pulse number frequency doubler counter 12, speed change processing portions 15a and 15b which convert the count value on any counter into sampling speed for a plurality of hours; an acceleration/deceleration computing portion 21<SB>1</SB>which computes acceleration/deceleration with respect to each converted sampling speed; start/end detecting means 31a to 34a and 37a to 40a which detect the start/end of the idle rotation/skid by using the sampling speed for a plurality of hours, each acceleration/deceleration, and linear data stored in advance; and judging means 35, 36, 41 to 43, and 23 are provided judge from these start/end signals whether idle rotation or skid is underway, and to select idle rotation/skid of the short time sampling speed in a large idle rotation/skid, or those of the long sampling time speed in a small idle rotation/skid, and to judge whether it is idle rotation or skid for each axle. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a skid / skid detection device used for a train control device or the like.
[0002]
[Prior art]
In a train control device, since a train arrives at a predetermined station at a predetermined time, it is important to accurately determine train speed and position data.
[0003]
Normally, when detecting the speed and position of a train, an error that occurs constantly can be expected within a margin, but an error that occurs unsteadily needs to be corrected. Since the unsteady error factor is mainly slipping, it is important to detect the slipping with high accuracy.
[0004]
Therefore, the conventional slip / skid detection device includes speed calculation processing units 52a and 52b for calculating the speed from the number of pulses generated from the speed generators 51a and 51b attached to any two axes of the vehicle as shown in FIG. It is composed of an idling slide detection processing unit 53.
[0005]
The speed calculation processing units 52a and 52b include pulse counters 54a and 54b having a required number of bits for counting the number of pulses generated for each predetermined moving distance from the speed generators 51a and 51b attached to each shaft. Pulse sampling processing units 55a and 55b for sampling the count values counted by 54a and 54b at predetermined intervals, and a pulse-speed for converting the sampled pulse values to, for example, a 200 ms sampling speed using a required sampling time Conversion processing units 56a and 56b are provided.
[0006]
On the other hand, as shown in FIG. 6, the slip / skid detection processing unit 53 differentiates the 200 ms sampling speed calculated by the speed calculation processing units 52a and 52b of each axis system, and calculates an acceleration / deceleration calculation unit 61a that calculates a 200 ms acceleration / deceleration. 61b, a slip / skid determination processing unit 62a, 62b, and a slip / skid determination unit 63 which compares both outputs of the slip / skid determination processing units 62a, 62b to detect slipping or / and sliding. .
[0007]
Here, since the slip / skid determination processing units 62a and 62b have the same configuration, only the one-axis slip / skid determination processing unit 62a will be described below, and the description of the other slip / skid determination processing unit 62b will be omitted. I do.
[0008]
The idling / sliding determination processing unit 62a is provided with a system for judging during idling and a system for judging during sliding.
[0009]
The system for judging whether the vehicle is idling is based on the 200 ms sampling speed output from the speed calculation processing section 52a and the linear data registered in advance in the database 70a. The idling detection value calculation processing sections 64aa and 64ab for individually calculating the acceleration and the end detection deceleration / speed are compared with the calculated detection acceleration and the 200 ms sampling acceleration / deceleration, and when the acceleration / deceleration exceeds the detection acceleration. A comparison of the end detection deceleration calculated by the idling detection value calculation processing section 64ab with the 200 ms sampling acceleration / deceleration, and a detection calculated by the idling detection value calculation processing section 64ab. Slip end detection comparison processing that detects the end of slip detection by comparing the speed with the sampling speed of 200 ms And 66a, these idling detection comparing unit 65a, and the idle status judgment section 67a that determines in idling from both the output of the idling end detection comparing unit 66a is provided.
[0010]
On the other hand, the system for determining whether the vehicle is sliding is also provided with two sliding detection value calculation processing units 64ba, 64bb, a sliding detection comparison processing unit 65b, a sliding end detection comparison processing unit 66b, and a sliding determination unit 67b. An idling / sliding changeover judging unit 68a is provided for switching between the output of the idling judging unit 67a and the output of the judging unit 67b for output.
[0011]
Next, a description will be given of an example in which the vehicle actually spins using the above-described slip / skid detection device.
[0012]
First, the speed calculation processing units 52a and 52b calculate a 200 ms sampling acceleration / deceleration by differential processing from the sampling speed of the sampling time of 200 ms. In this state, the idling detection value calculation processing unit 64aa uses the 200 ms sampling speed and the linear data registered in the database 70a to detect the acceleration as a reference value. The speed is calculated, and the calculated detected acceleration is sent to the idling detection / comparison processing unit 65a, and the calculated end detection deceleration / speed is sent to the idling end detection / comparison processing unit 66a.
[0013]
The idling detection comparison processing unit 65a compares the calculated detected acceleration with the 200 ms sampling acceleration / deceleration, detects the occurrence of idling when the acceleration / deceleration exceeds the detected acceleration, and sends it to the idling determination unit 67a.
[0014]
On the other hand, the idling end detection comparison processing unit 66a compares the end detection deceleration calculated by the idling detection value calculation processing unit 64ab with the sampling acceleration / deceleration of 200 ms, and compares the detection speed calculated by the idling detection value calculation processing unit 64ab with 200 ms. Completion of the idling detection is detected by comparison with the sampling speed, and is similarly sent to the idling determination section 67a. Accordingly, the idling determination section 67a determines that the idling is currently occurring based on the idling detection signal and the idling detection end signal, and sends it to the idling / sliding switching determination section 68a.
[0015]
For the slip detection, the same process as that of the slip detection described above is executed, and the slip determination unit 67b detects that the ski is running, and similarly sends it to the slip sliding switch determination unit 68a. Here, the slip / skid switch determination unit 68a receives the slip detection signal and the slip detection signal that have been separately processed, and determines on which axis the slip state or the sliding state occurs based on which axis. This prevents, for example, slipping from being detected during the acceleration of the return of the run. Finally, the slip / skid determining unit 63 determines whether the train is idling / sliding only for one axis or all axes / sliding / sliding based on the determination result for each axis. Is sent to the correction processing unit that has not been subjected to the correction.
[0016]
[Problems to be solved by the invention]
However, in the above-mentioned slip / skid detection device, since the pulse is converted into the speed, the sampling error is inevitably increased. Generally, there are a large slippage and a minute slippage in the slippage generated by the running of a train. In the case of a large slippage, for example, a slippage of about ± 10 km / h / s at an acceleration / deceleration occurs. The slippage can be detected and corrected by the slippage detection processing described above.
[0017]
However, it is difficult to detect a minute slippage by a speed position detection method that converts the number of pulses generated from the current speed generator into a speed. As a result, the following problems have been pointed out.
[0018]
{Circle around (1)} When a slight idling occurs, the occurrence state cannot be detected, so that the recognition speed comes higher than the actual speed. On the other hand, when a minute sliding occurs, the state of the minute sliding cannot be detected, so that the recognition speed is lower than the actual speed.
[0019]
{Circle around (2)} When a minute run occurs, there is a problem that the train is recognized as a position behind the actual train position.
[0020]
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a slip / skid detection device capable of reliably detecting from a large slip to a small slip.
[0021]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention relates to a slip / skid detection device that detects slip / skid of each of the axes based on a pulse generated at predetermined intervals from a speed generator mounted on a plurality of axes of a vehicle, Pulse number counting means for counting the number of pulses generated from the machine, speed conversion means for converting the count value of the counting means into a sampling speed for a plurality of different times, and acceleration / deceleration for each sampling speed converted by the speed conversion means And acceleration / deceleration calculating means for calculating the acceleration / deceleration, generation / end detection means for detecting the occurrence / end of idling or / and sliding based on these different sampling times and acceleration / decelerations, and the sampling speed While it is determined that the vehicle is spinning or / and gliding from the slip / slide occurrence / end signals obtained for each When a slip occurs or / and a large gliding occurs, a selection is made during idling or / and a gliding caused by the short sampling speed, and when a small slip occurs or / and a small gliding occurs, it is caused by the long sampling speed. An idle / sliding determining means for determining idle / sliding for each axis while idling or / and sliding is provided.
[0022]
According to the present invention having the above-described configuration, the number of pulses generated from the speed generator is counted by the pulse number counting means, and the counted pulse value is changed by the speed conversion means to a plurality of different pulses in accordance with different sampling times required. The sampling speed is obtained, and the acceleration / deceleration is calculated for each sampling speed by the acceleration / deceleration calculating means.
[0023]
Thereafter, the occurrence / end detection means detects the occurrence and end of slipping / sliding using the linear data to be referred to according to the sampling speed registered in advance, each sampling speed, and each sampling acceleration / deceleration, It is sent to the slip / slide judging means. The idling / sliding determining means judges whether the vehicle is idling or / and skiing from the occurrence / termination signal of the idling / sliding obtained at each sampling speed, and performs sampling for a short time when a large slip occurs and / or when a large slip occurs. Select during slipping or / and gliding due to speed, and at the time of occurrence of micro-slip or / and micro-sliding, use slipping or / and / or gliding due to a long sampling speed, and use the slip during each axis.・ Since the skid is judged, for example, when a slip is caused by a short sampling speed or / and a selection is made during a skid, a large slip or a large skid can be detected at an early stage, and a slip caused by a long sampling speed can be detected. When selecting medium or / and gliding, micro-slip / micro-slip can be easily detected, and it is possible to reliably detect from large-slip to micro-slip. It is.
[0024]
In addition to using a pulse number counter as the pulse number counting means, a pulse number multiplying counter is provided, and if the count pulse value of the pulse number counter and the count pulse value of the pulse number multiplying counter are selectively used, sampling can be performed. Speed accuracy can be increased
Further, a pulse cycle counter for counting the pulse cycle (frequency) of the pulse generated from the speed generator is provided, and this pulse cycle is converted into a cycle counter speed, and the acceleration / deceleration is calculated in the same manner as described above to determine whether the vehicle is idling or sliding. However, it is possible to increase the detection accuracy by selectively using both or during slipping and / or sliding due to each sampling speed.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0026]
FIG. 1 is a configuration diagram showing an embodiment of a slip / skid detection device according to the present invention.
[0027]
This slip / skid detector is a speed generator 1 attached to any arbitrary shaft of a vehicle. ₁ , 1 ₂ , 1 _n Speed calculation processing unit 2 for each axis for calculating a plurality of sampling speeds and cycle counter speeds different from the number of pulses generated from ₁ , 2 ₂ , 2 _n And these speed calculation processing units 2 ₁ , 2 ₂ , 2 _n And a slip / slide detection processing unit 3 which detects slip and / or slip by using the output of.
[0028]
This speed calculation processing unit 2 ₁ Is a speed generator 1 ₁ Pulse counter 11 for counting the number of pulses corresponding to the moving distance generated from the motor and the speed generator 1 ₁ When counting the number of pulses generated from the counter, a pulse number multiplying counter 12 for counting the rise and fall of the pulse, a counter switching signal for automatically generating the pulse values of these counters 11 and 12 from within the own train , A pulse sampling unit 14 provided at the output end of the selection unit 13, and a plurality of pulse-speed conversion processes connected to the output side of the pulse sampling unit 14. , 15i are provided. The counter switching signal indicates whether or not the pulse count value can be easily obtained. ₁ Although it depends on the mounting location of the gear, for example, whether the gear is engaged or not, in general, the pulse number counter 11 is selected in the low speed range, and the pulse number multiplying counter 12 is selected in the high speed range. .
[0029]
The pulse sampling processing section 14 has a function of sampling the count values of the pulse number counters 11 and 12 at predetermined sampling times. The plurality of pulse-speed conversion processing units 15a, 15b,..., 15i have a function of converting a pulse value sampled by the pulse sampling processing unit 14 into a sampling speed of, for example, 200 ms and 1 s in accordance with at least two sampling times.
[0030]
The speed calculation processing unit 1 ₁ Has a pulse cycle counter 16 and a frequency-speed conversion processing unit 17, and calculates a cycle counter speed. The pulse cycle counter 16 has a function of calculating a frequency from the number of pulses in a required cycle. The frequency-speed conversion processing unit 17 reads the frequency calculated by the pulse cycle counter 16 at a required timing to obtain a cycle counter speed. The reason why the pulse cycle counter 16 is used is that it may be more advantageous to detect slipping / sliding from the cycle counter speed rather than the required sampling speed in accordance with the speed zone of the own train. Whether to use the detection of slipping / sliding obtained from the sampling speed and the detection of slipping / sliding obtained from the cycle counter speed, or to use both types of detection is performed by a speed validity / invalidity determination processing unit described later.
[0031]
Note that the other speed calculation processing unit 2 ₂ , 1 _n About the speed calculation processing unit 2 ₁ Therefore, the description of the configuration is omitted here, and the speed calculation processing unit 2 ₁ The explanation is given.
[0032]
As shown in FIG. 2, the slippage detection processing unit 3 includes each speed calculation processing unit 2. ₁ , 2 ₂ , 2 _n Acceleration / deceleration calculation unit 21 provided corresponding to ₁ , 21 ₂ , ..., 21 _n (21n is not shown), the idling slide determination processing unit 22 ₁ , 22 ₂ , ..., 22 _n (22n is not shown) and an idling-slip determining unit 23.
[0033]
Note that each of these acceleration / deceleration calculation units 21 ₁ , 21 ₂ , ..., 21 _n , Idling slide judgment processing unit 22 ₁ , 22 ₂ , ..., 22 _n Have the same configuration, the acceleration / deceleration calculation unit 21 will be described below for convenience of explanation. ₁ , Idling slide judgment processing unit 22 ₁ The other acceleration / deceleration calculation units 21 ₂ , ..., 21 _n , Idling slide judgment processing unit 22 ₂ , ..., 22 _n About the acceleration / deceleration calculation unit 21 ₁ , Idling slide judgment processing unit 22 ₁ The explanation is given.
[0034]
The acceleration / deceleration calculation unit 21 ₁ Is the speed calculation processing unit 2 ₁ For example, the sampling speed and the cycle counter speed of 200 ms and 1 s calculated by the above are differentiated, respectively, to obtain a sampling acceleration / deceleration and a cycle counter acceleration / deceleration of 200 ms and 1 s.
[0035]
The slipping / skating determination processing unit 22 ₁ Is provided with a system for determining that the vehicle is idling and a system for determining that the vehicle is sliding.
[0036]
The system for judging whether the vehicle is idling includes the idling detection value calculation processing sections 31a, 31b, and 31t corresponding to the 200 ms sampling speed, the 1s sampling speed, and the period counter speed, and the idling detection end value calculation corresponding to each sampling speed and the period counter speed. Processing units 32a, 32b, and 32t are provided, as well as idling detection comparison processing units 33a, 33b, and 33t, idling end detection processing units 34a, 34b, and 34t, speed valid / invalid determination processing unit 35, and idling determination processing unit 36. .
[0037]
The idling detection value calculation processing units 31a, 31b, and 31t include the speed calculation processing unit 2 ₁ From the 200 ms sampling speed, the 1s sampling speed, the cycle counter speed, and the linear data serving as a reference value registered in advance in the database 44, a slip detection condition, that is, a detected acceleration serving as a reference value for detecting a slip is calculated. In addition, the idling detection end value calculation processing units 32a, 32b, and 32t are the same as the idling detection value calculation processing units 31a, 31b, and 31t. ₁ From the respective sampling speeds and cycle counter speeds calculated in step (1) and the linear data registered in the database 44, the idling end detection condition, that is, the end detection speed and deceleration serving as the idling end reference are calculated.
[0038]
The idling detection comparison processing units 33a, 33b, and 33t include the detected acceleration of each speed calculated by the idling detection value calculation processing units 31a, 31b, and 31t, and the acceleration / deceleration calculation unit 21. ₁ Has a function of detecting the occurrence of 200 ms idling, 1 s idling, and periodic idling by comparing the sampling acceleration / deceleration calculated by the above with the cycle counter acceleration / deceleration. The idling end detection processing units 34a, 34b, 34t are provided with an end detection deceleration calculated by the idling detection end value calculation processing units 32a, 32b, 32t and an acceleration / deceleration calculation unit 21. ₁ Are compared with the sampling acceleration / deceleration calculated in the step (c) and the cycle counter acceleration / deceleration, and the end detection speed and the speed calculation processing unit 2 also calculated by the calculation units 32a, 32b, and 32t. ₁ Has a function of comparing the respective sampling speeds and the cycle counter speeds calculated in the above, and detecting the end of idling.
[0039]
The speed validity / invalidity determination processing unit 35 calculates a value obtained from any of the pulse counters 11, 12, and 16 from the outputs of the idle rotation detection comparison units 33a, 33b, and 33t and the outputs of the idle rotation end detection units 34a, 34b, and 34t. Has a function of determining whether to enable or disable, or to enable both by overlapping according to the speed range.
[0040]
The idling determination processing unit 36 is based on the outputs of the processing units 33a, 33b, and 33t and the outputs of the idling end detection processing units 34a, 34b, and 34t, or outputs the idling output from the speed valid / invalid determination processing unit 35. The status is determined, and it is determined that the vehicle is idling now.
[0041]
The system for judging during the skiing includes a sliding detection value calculation processing section 37a, 37b, 37t corresponding to each sampling speed and cycle counter speed, and a sliding detection end value calculation processing section 38a, 38b corresponding to each sampling speed and cycle counter speed. , 38t, a sliding detection comparison processing section 39a, 39b, 39t, a sliding end detection processing section 40a, 40b, 40t, a speed valid / invalid determination processing section 41, and a sliding determination processing section 42.
[0042]
The sliding detection value calculation processing units 37a, 37b, and 37t include a speed calculation processing unit 2 ₁ From the 200 ms sampling speed, the 1s sampling speed, the cycle counter speed, and the linear data registered in the database 44, respectively, the sliding detection condition, that is, the detection deceleration serving as a reference value for detecting the sliding is calculated. The sliding detection end value calculation processing units 38a, 38b, 38t are the same as the sliding detection value calculation processing units 37a, 37b, 37t. ₁ From the respective sampling speeds, cycle counter speeds, and linear data registered in the database 44, the slide end detection condition, that is, the end detection speed and acceleration serving as the slide end reference are calculated.
[0043]
The sliding detection comparison processing units 39a, 39b, and 39t include a detection deceleration and acceleration / deceleration calculation unit 21 for each speed calculated by the sliding detection value calculation processing units 37a, 37b, and 37t, respectively. ₁ Has the function of comparing the sampling acceleration / deceleration calculated in the above with the cycle counter acceleration / deceleration to detect the occurrence of 200 ms sliding, 1 s sliding, and periodic sliding, respectively. The sliding end detection processing units 40a, 40b, and 40t include end detection accelerations calculated by the sliding detection end value calculation processing units 38a, 38b, and 38t, sampling acceleration / deceleration calculated by the acceleration / deceleration calculation unit 211, and cycle counter acceleration / deceleration. And the end detection speed and the speed calculation processing unit 2 also calculated by the calculation units 38a, 38b, and 38t. ₁ It has a function to detect the end of the run by comparing each sampling speed and the period counter speed calculated in the above.
[0044]
The speed validity / invalidity determination processing unit 41 calculates a value obtained from any of the pulse counters 11, 12, and 16 from the output of the slide detection comparison processing units 39a, 39b, and 39t and the output of the slide end detection processing units 40a, 40b, and 40t. Has the function of determining that is valid and determining whether to output. The in-sliding determination processing unit 42 determines the in-sliding status output from the speed validity / invalidity determination processing unit 41, and determines that the vehicle is currently in a skiing state.
[0045]
Further, a slip / skid switching determination unit 43 is provided on both output sides of the slip / skid determination processing unit 36 and the skid determination process unit 42, and the slip / skid determination unit 23 is connected to the output side of the slip / skid switching determination unit 43. ing. The slipping / sliding switching determination unit 43 determines from which axis system the slipping / sliding state determined by the slipping determination processing unit 36 and the sliding determination processing unit 42 is generated. Therefore, the slip / skid determination unit 23 on the output side of the slip / slide switch determination unit 43 has a function of comprehensively determining which axis is in which state as a vehicle based on the result of each axis.
[0046]
The slip / skid detector is a combination of FIG. 1 and FIG. 2 as described above. Specifically, the pulse number counter 11 and the pulse sampling processor 14 are provided with different pulse-speed conversion processors. In addition to the invention related to the configuration provided with 15a and 15b, an invention in which a configuration related to the pulse period counter 16 and the frequency-speed conversion processing unit 17 is added, an invention in which the pulse number multiplying counter 12 is added, and any other options It goes without saying that an invention combining the above configurations can be considered.
[0047]
Next, the operation of the slip / skid detection device having the above configuration will be described. It should be noted that the slip detection and the skid detection have substantially the same configuration, and therefore, a case where a skid has occurred will be described below as an example.
[0048]
First, a speed generator 1 for each shaft attached to an arbitrary shaft of a vehicle ₁ , 1 ₂ , ..., 1 _n The pulses generated for every predetermined moving distance from are counted by the pulse number counter 11 corresponding to each axis. Here, the pulse sampling processing unit 14 reads the count value of the pulse number counter 11 at predetermined intervals. The count value read into the pulse sampling processing unit 14 is converted into a speed value corresponding to a required sampling time, and an xms sampling speed is calculated. Incidentally, in the present embodiment, the 100 ms sampling rate and the 1 s sampling rate are calculated.
[0049]
In addition, the slip / skid detector includes a pulse number multiplying counter 12 and a pulse cycle counter 16 in addition to the pulse number counter 11. ₁ The rising and falling values of the pulse value generated from are counted. The counter switching signal automatically generated from the inside of the own train according to the speed band of the own train is supplied to the selecting means 13, and at the same time, although not shown, the pulse-speed conversion processing units 15a and 15b similarly perform the same. The arithmetic processing is changed by supplying and multiplying the frequency. Therefore, the pulse sampling processing unit 14 reads the normal pulse count value or the multiplied pulse count value, and calculates the 100 ms sampling speed and the 1 s sampling speed in accordance with, for example, the 100 ms sampling time and the 1 s sampling time.
[0050]
The pulse period counter 16 is a speed generator, for example, 1 ₁ The frequency (period count value) is calculated by measuring the pulse width of the pulse generated from, the period count value is read at a required timing, and the frequency-speed conversion processing unit 17 calculates the period counter speed.
[0051]
On the other hand, the slippage detection processing unit 3 performs the following operation.
[0052]
Speed calculation processing unit 2 ₁ The 200 ms, 1 s sampling speed calculated by ₁ Where the differential processing is performed to calculate the acceleration / deceleration for 200 ms and 1 s sampling, respectively, and sent to the sliding detection value calculation processing units 37a, 37b, 37t and the sliding detection end value calculation processing units 38a, 38b, 38t. I do.
[0053]
Here, the sliding detection value calculation processing units 37a, 37b, 37t each determine a sliding detection level serving as a sliding reference value. This sliding detection level means that a required sliding detection level is searched from the sliding detection levels registered in advance in the database 44 in accordance with the 200 ms, 1 s sampling speed and the period counter speed of the own train, and these speeds and the sliding detection are determined. Based on the level, a detection deceleration, which is a reference value for detecting the occurrence of sliding, is calculated, and sent to the sliding detection comparison processing units 39a, 39b, 39t. In addition, the sliding detection end value calculation processing sections 38a, 38b, 38t also determine the sliding end detection level that serves as the sliding end reference value. That is, a required sliding end detection level is searched from the sliding end detection levels registered in advance in the database 44 in accordance with the 200 ms, 1 s sampling speed and the cycle counter speed of the own train, and these speeds and the sliding end detection level are searched. , The detection end acceleration and the end speed value, which are reference values for detecting the end of the run, are calculated and sent to the run end detection processing units 40a, 40b, and 40t.
[0054]
Here, the sliding detection comparison processing units 39a, 39b, and 39t include the acceleration / deceleration calculation unit 21. ₁ The acceleration / deceleration of each train calculated by the above is compared with the detection deceleration which is the reference value processed by the sliding detection value calculation units 37a, 37b, 37t, and exceeds the detection deceleration which becomes the reference value. If this is the case, it is determined to be a run, and a detection signal for 200 ms run, 1s run, and periodic run is output and sent to the speed valid / invalid determination processing section 41 or the running determination processing section 42.
[0055]
On the other hand, also in the sliding end detection processing units 40a, 40b, and 40t, the speed calculation processing unit 2 ₁ 200 ms, 1 s sampling speed, cycle counter speed, and acceleration / deceleration calculation unit 21 of the own train calculated by ₁ The acceleration / deceleration of the own train calculated by the above is compared with the detection end acceleration and the end speed value which are reference values for detecting the end of the slide calculated by the slide detection end value calculation units 38a, 38b, 38t. Detect the end. As a specific example, after detecting the run, the speed changes to acceleration, and when it is determined that the actual speed of the train has been reached, the run detection is determined to be completed, the 200 ms run detection is completed, the 1s run detection is completed, and the period counter is detected. A signal such as the end is sent to the during-sliding determination processing unit 42 or the speed valid / invalid determination processing unit 41.
[0056]
Here, when the output of the slide detection comparison processing units 39a, 39b, and 39t and the output of the slide end detection processing units 40a, 40b, and 40t are received by the during-sliding determination processing unit 42, the sampling speed and the cycle counter speed are compared. It is determined whether or not the vehicle is sliding based on the acquired sliding detection flag and the sliding end detection flag.
[0057]
Then, the slipping / sliding switching determination unit 43 determines whether the vehicle is finally spinning or sliding based on the slipping detection result obtained from the system that determines whether the vehicle is spinning and the sliding detection result obtained by the skidding determination processing unit 42. And sends it to the slipping / skating determining unit 23. The reason for judging whether the vehicle is spinning or sliding is, for example, a process for preventing the idle rotation from being detected during the return acceleration during the sliding.
[0058]
Therefore, the slip / skid determining unit 23 determines whether the train is slipping / sliding on only one axis or all the axes, based on the determination result of the slip / sliding switching determining unit 43 of each axis system. I do.
[0059]
The speed validity / invalidity determination processing unit 41 receives the outputs of the sliding detection comparison processing units 39a, 39b, and 39t and the outputs of the sliding end detection processing units 40a, 40b, and 40t. It includes a slipping slip detection result obtained from the sampling speed related to the pulse number multiplying counter 12 and a slipping slip detection result obtained from the cycle counter speed related to the pulse cycle counter 16, but depending on the running speed band of the train, A selection process is performed to select whether to use the result of the pulse period counter 16, to use the result of the pulse number counter 11 or the result of the pulse number multiplying counter 12, or to use both results (see FIGS. 3 and 4 described later). ). Therefore, the in-skid determination processing unit 42 determines whether or not the skiing is in progress based on the selected result of the skid detection flag and the skid end detection flag. It is determined whether or not the vehicle is idling based on the detection flag and the idle detection flag, and the result of this determination is sent to the idle / sliding switching determination unit 43, and it is finally determined whether the vehicle is idle or sliding, and the idle / sliding determination unit 23 is determined. Will be sent.
[0060]
Incidentally, an example of sliding detection using a sampling speed as an example will be described with reference to FIGS. Note that FIG. 3 is a diagram illustrating an example of detection of only a large gliding-short-time sampling speed (for example, 200 ms), and FIG. 4 is a diagram illustrating an example of detection of only a small gliding-long-time sampling speed (eg, 1 s).
[0061]
Now, when a gliding occurs, the speed obtained from the speed generator becomes smaller than the actual speed of the train. The reason is that the traveling distance is not measured by the speed generator during the run. As a result, a value of the deceleration that cannot be obtained in the normal running during the sliding is shown.
[0062]
On the other hand, the slide detection level serving as a reference for slide detection differs depending on the sampling speed or sampling time. When the sampling speed is high or the sampling time is short, as shown in FIG. Accordingly, the detection becomes earlier (the delay time of the detection becomes shorter), but the error due to the sampling increases, and the sliding detection level cannot be increased. Conversely, as the sampling speed is slower or the sampling time is longer, the sliding detection is delayed, but the error due to sampling is smaller.
[0063]
As a result, when a large run occurs, as shown in FIG. 3B, the 200 ms sampling acceleration / deceleration is reduced, and immediately exceeds the reference slide detection level.
[0064]
Further, in the case of a minute skid, at a sampling speed of 200 ms, as shown in FIGS. 4A and 4B, the acceleration / deceleration does not change as the skid detection level is approached. That is, it is difficult to detect the gliding. On the other hand, the 1 s sampling acceleration / deceleration at the 1 s sampling speed easily exceeds the slide detection level, so that it is possible to detect even a slide that cannot be detected as a slide in the related art.
[0065]
The present invention is not limited to the above-described embodiment, and can be implemented with various modifications without departing from the scope of the invention. For example, in the slipping / sliding process shown in FIG. 2, the reference axis speed is set from the speed of each axis. A configuration may be employed in which a pulse generated from the speed generator is employed to calculate each sampling speed and cycle counter speed. Although the short-time and long-time sampling rates are used, for example, two or more sampling rates may be used for a short time, and two or more sampling rates may be used for a long time.
[0066]
Furthermore, the embodiments can be implemented in combination as much as possible, and in that case, the effect of the combination is obtained. Furthermore, each of the above embodiments includes various upper and lower stage inventions, and various inventions can be extracted by appropriately combining a plurality of disclosed components. For example, when an invention is extracted because some constituent elements can be omitted from all the constituent elements described in the means for solving the problem, if the extracted invention is implemented, the omitted part is omitted. Is appropriately supplemented by well-known conventional techniques.
[0067]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a slip / slide detection device that can reliably detect not only a large slip but also a minute slip.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a slip / skid detection device according to the present invention.
FIG. 2 is a configuration diagram illustrating a specific example of a slippage detection processing unit illustrated in FIG. 1;
FIG. 3 is a characteristic diagram illustrating an example of sampling speed selection during a large run.
FIG. 4 is a characteristic diagram illustrating an example of selecting a sampling speed at the time of a minute skiing.
FIG. 5 is a configuration diagram showing a conventional slip / skid detection device.
FIG. 6 is a specific configuration diagram of a slippage detection processing unit shown in FIG. 5;
[Explanation of symbols]
1 ₁ , 1 ₂ , ..., 1 _n … Speed generator
2 ₁ , 2 ₂ , ..., 2 _n ... Speed calculation processing section
3 ... Slip and slip detection processing unit
11 ... Pulse number counter
12: Pulse number multiplication counter
13. Selection means
14 ... Pulse sampling processing unit
15a, 15b,... Pulse-speed conversion processing unit
16 ... Pulse period counter
17 frequency-speed conversion processing unit
21 ₁ , 21 ₂ … Acceleration / deceleration calculation section
22 ₁ , 22 ₂ … Slip and slip judgment processing unit
23 ... Slip-sliding judgment unit
31a, 31b, 31t ... idling detection value calculation processing unit
32a, 32b, 32t ... idling detection end value calculation processing unit
33a, 33b, 33t ... idling detection comparison processing unit
34a, 34b, 34t ... idling end detection processing section
35: Speed valid / invalid judgment processing unit
36 ... idling determination processing unit
37a, 37b, 37t ... sliding detection value calculation processing unit
38a, 38b, 38t: sliding detection end value calculation processing unit
39a, 39b, 39t ... sliding detection comparison processing unit
40a, 40b, 40t ... sliding end detection processing unit
41: Speed valid / invalid judgment processing unit
42 ... Sliding judgment processing unit
43 ... Slip-and-slide switching switch

Claims (4)

In a slip / skid detection device that detects slip / skid of the shaft by using a pulse generated for each predetermined moving distance from a speed generator attached to a plurality of shafts of the vehicle,
A pulse number counter for counting the number of pulses generated from the speed generator,
Speed conversion means for converting the count value of this counter into a sampling speed for a plurality of different times,
Acceleration / deceleration calculation means for calculating acceleration / deceleration for each sampling speed converted by the speed conversion means,
Generation / end detection means for detecting occurrence / end of idling or / and skiing based on the sampling speeds and acceleration / decelerations of these different times,
While the idling / sliding is determined from the slip / slide occurrence / end signals obtained for each of the sampling speeds by this detection means, at least one of the short time is set when a large slip occurs and / or when a large slip occurs. During slipping and / or gliding caused by the sampling speed of the vehicle, and using at least one of the long slipping and / or gliding caused by the long sampling time when micro-slip occurs and / or micro-slide occurs. A slip / slide detecting device, comprising: a slip / slide determining means for determining slip / slide for each axis. The slip / skid detection device according to claim 1,
Providing a pulse number multiplying counter for counting the rise and fall of the pulse generated from the speed generator,
The slip / run detecting device, wherein the speed conversion means selects one of the count value of the multiplication counter and the count value of the pulse number counter and converts the count value into a sampling speed for a plurality of different times. The slip / skid detection device according to claim 1 or 2,
A pulse period counter that counts a frequency value within a predetermined time from a pulse generated from the speed generator,
Means for converting a frequency value obtained by the pulse period counter into a period counter speed;
Acceleration / deceleration calculating means for calculating a cycle counter acceleration / deceleration from the cycle counter speed obtained by this means,
Means for detecting the occurrence / end of idling or / and gliding based on the cycle counter speed and the cycle counter acceleration / deceleration;
The slip / or / slide on / off signal resulting from the cycle counter speed obtained by this means and the slip / or / slide on / off signal obtained from the different plural-time sampling speeds and the respective acceleration / deceleration rates are obtained as follows: A slip / skid detection device, comprising: validity / invalidity determination means for selecting and outputting one or both of them as valid based on the speed zone of the own train. The slip / skid detection device according to any one of claims 1 to 3,
Compare the rotation speed obtained from the pulse generated from the speed generator attached to the plurality of shafts of the vehicle, select the axis that can be regarded as having the least slip, the pulse generated from the speed generator of the selected shaft An idle skid detection device characterized by using.

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