CN210893084U - Unilateral axle wheel falls bridge detecting system - Google Patents
Unilateral axle wheel falls bridge detecting system Download PDFInfo
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- CN210893084U CN210893084U CN201922116123.2U CN201922116123U CN210893084U CN 210893084 U CN210893084 U CN 210893084U CN 201922116123 U CN201922116123 U CN 201922116123U CN 210893084 U CN210893084 U CN 210893084U
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Abstract
The utility model is suitable for a motor vehicle driver examination technical field provides a unilateral axle wheel falls bridge detecting system. The system comprises: at least three angular acceleration sensors are respectively arranged on axles connected with wheels of the vehicle and periodically detect the acceleration and the inclination angle of the vehicle; the data acquisition equipment is respectively connected with the at least three angular acceleration sensors and the data processing equipment, and acquires acceleration data and inclination angles detected by the at least three angular acceleration sensors in real time; the vehicle-mounted satellite positioning base station is arranged on the vehicle and connected with the data processing equipment to obtain the real-time position of the vehicle in real time; and the data processing equipment receives the acceleration data, the inclination angle and the real-time position and obtains the detection result of whether the wheel falls off the axle or not so as to obtain the accurate detection result of the falling off of the wheel of the single-side axle.
Description
Technical Field
The utility model belongs to the technical field of motor vehicle driver examination, especially, relate to a unilateral axle wheel falls bridge detecting system.
Background
At present, for the detection of the falling of the vehicle wheels of the unilateral bridge in the motor vehicle driver examination or motor vehicle driver training industry, a contact switch similar to a button protruding out of the bridge floor is designed on the bridge floor of the unilateral bridge, when the vehicle passes through the bridge floor, the times of rolling the switch by the wheels can be collected by rolling the button contact switch, and whether the vehicle wheels run on the bridge floor and whether the vehicle wheels fall off the bridge are judged according to the collected times. Usually, three to four 'button' contact switches are designed on the bridge floor of the unilateral bridge, the interval of the two 'button' contact switches is large, when the current axle steering wheel of the vehicle runs between the two 'button' contact switches, if the unilateral bridge falls down, the bridge floor can be forcibly twisted by turning wheels which will fall the bridge, and at the moment, the wheels roll the 'button' contact switches, so that the wheels cannot be detected to fall the bridge, and misjudgment is caused. Another commonly used method for judging whether a single-side wheel of a bridge falls off from the bridge is to utilize high-precision positioning equipment of a vehicle to judge whether the wheel falls off from the bridge or whether the wheel falls off from the bridge but clings to the edge of the bridge or whether the wheel still runs on the bridge, wherein the error of the high-precision positioning equipment is generally in the range of 1-2 cm.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a unilateral axle wheel falls bridge detecting system to the problem that appears rolling "button" contact switch among the solution prior art and detects that the precision is low and the satellite positioning error causes falls bridge erroneous judgement.
The embodiment of the utility model provides a first aspect provides a unilateral axle wheel falls bridge detecting system, include: the system comprises at least three angular acceleration sensors, data acquisition equipment, a vehicle-mounted satellite positioning base station and data processing equipment;
the at least three angular acceleration sensors are respectively arranged on axles connected with wheels of a vehicle and periodically detect the acceleration and the inclination angle of the vehicle;
the data acquisition equipment is respectively connected with the at least three angular acceleration sensors and the data processing equipment, and acquires acceleration data and inclination angles detected by the at least three angular acceleration sensors in real time;
the vehicle-mounted satellite positioning base station is arranged on the vehicle and connected with the data processing equipment to obtain the real-time position of the vehicle in real time;
and the data processing equipment receives the acceleration data, the inclination angle and the real-time position and obtains a detection result of whether the wheels fall off the axle or not.
In one embodiment, two of the at least three angular acceleration sensors are arranged on a front axle of the vehicle, and the remaining angular acceleration sensors are arranged on a rear axle of the vehicle.
In one embodiment, two angular acceleration sensors of the at least three angular acceleration sensors are respectively disposed at both ends of a front axle of the vehicle at a predetermined distance close to an inner side of the wheel.
In one embodiment, when the at least three angular acceleration sensors are three angular acceleration sensors, the first and second angular acceleration sensors are respectively disposed at both ends of a front axle of the vehicle at a predetermined distance near an inner side of the wheel, and the third angular acceleration sensor is disposed at a middle position of a rear axle of the vehicle.
In one embodiment, when the at least three angular acceleration sensors are four angular acceleration sensors, the first angular acceleration sensor and the second angular acceleration sensor are respectively disposed at two ends of a front axle of the vehicle, which are close to the inner side of the wheel, by a preset distance, and the third angular acceleration sensor and the fourth angular acceleration sensor are respectively disposed at two ends of a rear axle of the vehicle, which are close to the inner side of the wheel, by a preset distance.
In one embodiment, the single-side axle wheel axle drop detection system further comprises at least three sensor fixing brackets;
the at least three sensor fixing supports are respectively arranged on axles connected with wheels of a vehicle and used for fixing the at least three angular acceleration sensors; the at least three sensor fixing supports and the at least three angular acceleration sensors are arranged in a one-to-one correspondence mode.
In one embodiment, the at least three sensor fixing brackets are welded to respective axles of the vehicle to which wheels are connected.
In one embodiment, the data processing device is an in-vehicle computer.
Compared with the prior art, the embodiment of the utility model beneficial effect who exists is: the embodiment of the utility model provides a, through set up at least three angle acceleration sensor on the axletree at the wheel connection for acquire the acceleration and the inclination of vehicle, on-vehicle satellite positioning basic station obtains the real-time position of vehicle, thereby data processing equipment can be based on acceleration data inclination with real-time position obtains the wheel and whether falls the testing result of bridge, thereby can accurately detect whether the wheel falls the bridge, can not appear rolling the condition that "button" contact switch detection precision is low and the bridge misjudgement falls that the satellite positioning error caused, and realized the simplification to unilateral bridge pontic mechanical structure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a single-side axle wheel drop axle detection system provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the single-side axle wheel falling axle detection device provided by the embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Example one
The embodiment of the utility model provides a unilateral axle wheel falls bridge detecting system, as shown in fig. 1, include: at least three angular acceleration sensors 101, data acquisition equipment 102, a vehicle-mounted satellite positioning base station 103 and data processing equipment 104;
the at least three angular acceleration sensors 101 are respectively disposed on axles connected to wheels of a vehicle, and periodically detect acceleration and an inclination angle of the vehicle;
the data acquisition device 102 is respectively connected with the at least three angular acceleration sensors 101 and the data processing device 104, and acquires acceleration data and inclination angles detected by the at least three angular acceleration sensors 101 in real time;
the vehicle-mounted satellite positioning base station 103 is arranged on the vehicle and connected with the data processing equipment 104 to obtain the real-time position of the vehicle in real time;
the data processing device 104 receives the acceleration data, the inclination angle and the real-time position, and obtains a detection result of whether the wheels fall off the axle.
Optionally, the data acquisition device 102 may summarize acceleration data and inclination angles of at least three angular acceleration sensors 101 and send the summarized data and the integrated data to the data processing device 104 as a record or a piece of data. The data acquisition device 102 is connected with the data processing device 104 through a serial communication line, so that the number of interfaces of the data processing device 104 can be reduced.
Optionally, two angular acceleration sensors of the at least three angular acceleration sensors 101 are disposed on a front axle of the vehicle, and the remaining angular acceleration sensors are disposed on a rear axle of the vehicle. For example, as shown in fig. 2, the first angular acceleration sensor and the second angular acceleration sensor are provided on a front axle of the vehicle, respectively, and the third angular acceleration sensor is provided on a rear axle of the vehicle.
Optionally, two angular acceleration sensors of the at least three angular acceleration sensors 101 are respectively disposed at two ends of a front axle of the vehicle near the inner side of the wheel by a preset distance. For example, as shown in fig. 2, the first angular acceleration sensor is disposed at a position where both ends of a front axle of the vehicle are close to the left wheel, and the second angular acceleration sensor is disposed at a position where both ends of the front axle of the vehicle are close to the right wheel.
Alternatively, when the at least three angular acceleration sensors 101 are three angular acceleration sensors, the first angular acceleration sensor and the second angular acceleration sensor are respectively disposed at two ends of a front axle of the vehicle near inner sides of wheels by a preset distance, and the third angular acceleration sensor is disposed at a middle position of a rear axle of the vehicle, for example, as shown in fig. 2, that is, the third angular acceleration sensor is disposed at a middle position of the rear axle of the vehicle.
Optionally, when the at least three angular acceleration sensors 101 are four angular acceleration sensors, the first angular acceleration sensor and the second angular acceleration sensor are respectively disposed at two ends of a front axle of the vehicle and close to the wheel inner side preset distance, and the third angular acceleration sensor and the fourth angular acceleration sensor are respectively disposed at two ends of a rear axle of the vehicle and close to the wheel inner side preset distance. Namely, the third angular acceleration sensor and the fourth angular acceleration sensor correspond to the arrangement positions of the first angular acceleration sensor and the second angular acceleration sensor respectively.
Optionally, the axle dropping situation of the wheel can be divided into two types, one is rapid axle dropping, and the other is slow axle dropping. When the wheel rapidly falls off the axle, the acceleration data of the vehicle suddenly increases, and the wheel can be judged to fall off the axle. In addition, because the inclination angle of the vehicle is calculated by the acceleration data, the inclination angle is affected when the acceleration data is not stable, so that the error ratio is large, and because the angle data is filtered by software, the inclination angle error lasts for a certain time, when the condition of rapidly dropping the bridge occurs, if the inclination angle is adopted for judgment, the error occurs, and therefore the acceleration data is firstly adopted for judgment.
Optionally, if the front axle is only provided with one angular acceleration sensor, whether the wheels drop from the axle is judged by the inclination angle, a large misjudgment condition exists, the angular acceleration sensor on the wheel on the other side of the front axle, which is not on the axle, is influenced by the acceleration to a small extent, and the angle data is accurate. Therefore, the acceleration data is used for judging whether the bridge is rapidly dropped or not more reliably and in real time. Whether the bridge falls slowly is judged by the angular acceleration sensor on the other side, so that the condition that whether the bridge falls is judged by a more accurate angle when the acceleration data is not large enough is made up, and misjudgment cannot occur. Therefore, two angular acceleration sensors need to be arranged on the front axle.
Alternatively, the reason why only one angular acceleration sensor may be mounted on the rear axle is that: because the rear axle judges that the wheels fall off the axle by using the acceleration difference or the inclination angle difference, each axle only judges that the axle falls off once, unlike the front axle, the wheels can be driven to go up the axle again after falling off the axle by turning, thereby the condition of falling off the axle for many times is generated. And the rear axle wheel falls off the bridge only when the front axle has passed the bridge or the front axle has not been on the bridge, the front axle can be buckled for 10 minutes in any one of the two states, and the whole project operation is unqualified as long as the deduction is greater than 10 minutes, so that the accumulated deduction is 20 minutes after the rear wheel has once fallen off the bridge, and the rear axle is provided with a sensor to meet the judgment requirement of the project, thereby saving the cost. If want the rear wheel also judge drop bridge many times, only need like the front axletree, respectively install a sensor can in the wheel both sides of rear axletree.
Optionally, as shown in fig. 2, the single-side axle wheel axle drop detection system may further include at least three sensor fixing brackets 105.
The at least three sensor fixing brackets 105 are respectively disposed on axles connected to wheels of the vehicle, and are used for fixing the at least three angular acceleration sensors 101; the at least three sensor fixing brackets 105 are arranged in one-to-one correspondence with the at least three angular acceleration sensors 101. It can be understood that, as shown in fig. 2, one sensor fixing bracket is respectively disposed for each of the first angular acceleration sensor, the second angular acceleration sensor, and the third angular acceleration sensor. Or the first angle acceleration sensor, the second angle acceleration sensor, the third angle acceleration sensor and the fourth angle acceleration sensor are respectively and correspondingly provided with a sensor fixing support.
Optionally, the at least three sensor fixing brackets 105 are respectively welded to axles connected to wheels of the vehicle, so as to be firmer, ensure that the data detected by the fixed angular acceleration sensor are less interfered, and the data are more accurate.
Optionally, the data processing device 104 is a vehicle-mounted computer.
According to the unilateral axle wheel bridge falling detection system, at least three angular acceleration sensors are arranged on the axle connected with the wheels and used for acquiring the acceleration and the inclination angle of the vehicle, and the vehicle-mounted satellite positioning base station acquires the real-time position of the vehicle, so that the data processing equipment can acquire the detection result of whether the wheel falls off the bridge or not based on the acceleration data, the inclination angle and the real-time position, and therefore whether the wheel falls off the bridge or not can be accurately detected, the conditions of low detection precision of a rolling button contact switch and bridge falling misjudgment caused by satellite positioning errors can be avoided, and the mechanical structure of a unilateral axle body is simplified.
The embodiment of the utility model provides a unilateral axle wheel falls bridge check out test set still provides, provide including above-mentioned arbitrary embodiment unilateral axle wheel fall bridge check out test system to have and above-mentioned arbitrary embodiment provide unilateral axle wheel fall bridge check out test system the same beneficial effect.
Optionally, an embodiment of the present invention further provides a single-side axle wheel drop axle detection method, where the single-side axle wheel drop axle detection system described in any one of the above embodiments is adopted to perform single-side axle wheel drop axle detection, and the single-side axle wheel drop axle detection method includes the following steps.
(1) And acquiring the real-time position of the vehicle, and periodically acquiring acceleration data detected by at least three angular acceleration sensors and the inclination angle of the vehicle respectively.
Optionally, in order to obtain a detection result of whether the vehicle drops from the axle, first acceleration data and a first inclination angle of the vehicle before the vehicle drives to the single-side axle and without driving to the single-side axle may be respectively obtained, and the first acceleration data and the first inclination angle are used as reference data to be compared with second acceleration data and a second inclination angle, which are periodically detected when the vehicle drives to the single-side axle, so as to jointly judge whether the wheels of the single-side axle drop from the axle.
(2) And processing the obtained acceleration data and the inclination angle according to the real-time position of the vehicle to obtain a detection result of whether the wheels fall off the axle or not.
Optionally, the single-side axle wheel falling detection item is divided into two stages, the first stage is that the vehicle left side wheel includes the vehicle left side front wheel and the left side rear wheel gap bridge, and the second stage is that the vehicle right side wheel includes the vehicle right side front wheel and the right side rear wheel gap bridge. When any wheel is detected to drop the axle, 10 points are deducted, and the whole project operation is unqualified as long as the deduction is more than 10 points.
Optionally, the obtained acceleration data and the obtained inclination angle are processed according to the real-time position of the vehicle, so as to obtain a detection result of whether the wheels drop off the axle, which is specifically as follows.
(11) And respectively calculating the acceleration data difference of the first acceleration data and the plurality of second acceleration data.
The first acceleration data is acceleration data of all angle acceleration sensors when the vehicle runs to the front of the single-side bridge and does not run to the single-side bridge, and the second acceleration data is acceleration data of corresponding angle acceleration sensors when the vehicle runs to the single-side bridge.
Optionally, the data acquisition device periodically acquires acceleration data of each angular acceleration sensor, and then the data processing device calculates the acceleration data in combination with the real-time position of the vehicle acquired by the vehicle-mounted satellite positioning base station. For example, after the first acceleration data is collected when the vehicle runs on the single-side bridge, a difference value is calculated between the first acceleration data and the first acceleration data when the vehicle runs before the single-side bridge and does not run on the single-side bridge, then after the second acceleration data is collected, a difference value is calculated between the second acceleration data and the first acceleration data, and so on. The number of acceleration data used to calculate the difference is from the same angular acceleration sensor.
(12) And respectively calculating the inclination angle difference values of the first inclination angle and the plurality of second inclination angles.
The first inclination angle is inclination angle data of all the angular acceleration sensors when the vehicle runs to the front of the single-side bridge and does not run on the single-side bridge, and the second inclination angle is inclination angle data of the angular acceleration sensors corresponding to the vehicle when the vehicle runs to the single-side bridge.
Optionally, the data acquisition device periodically acquires the inclination angle of each angular acceleration sensor, and then the data processing device calculates the inclination angle by combining the real-time position of the vehicle acquired by the vehicle-mounted satellite positioning base station. For example, after the vehicle travels to the single-side bridge, a difference is calculated between the first inclination angle when the vehicle travels to the front of the single-side bridge and does not travel to the single-side bridge, and then after the second inclination angle is acquired, a difference is calculated between the first inclination angle and the second inclination angle, and so on. The required number is that the inclination angle used for calculating the difference is from the same angular acceleration sensor.
(13) And when the acceleration data difference value exceeds a first preset range, determining that the wheel falls off the axle.
Optionally, the axle dropping situation of the wheel can be divided into two types, one is rapid axle dropping, and the other is slow axle dropping. When the wheel rapidly falls off the axle, the acceleration data of the vehicle suddenly increases, and the wheel can be judged to fall off the axle. In addition, because the inclination angle of the vehicle is calculated by the acceleration data, the inclination angle is affected when the acceleration data is not stable, so that the error ratio is large, and because the angle data is filtered by software, the inclination angle error lasts for a certain time, when the condition of rapidly dropping the bridge occurs, if the inclination angle is adopted for judgment, the error occurs, and therefore the acceleration data is firstly adopted for judgment.
Optionally, if the front axle is only provided with one angular acceleration sensor, whether the wheels drop from the axle is judged by the inclination angle, a large misjudgment condition exists, the angular acceleration sensor on the wheel on the other side of the front axle, which is not on the axle, is influenced by the acceleration to a small extent, and the angle data is accurate. Therefore, the acceleration data is used for judging whether the bridge is rapidly dropped or not more reliably and in real time. Whether the bridge falls slowly is judged by the angular acceleration sensor on the other side, so that the condition that whether the bridge falls is judged by a more accurate angle when the acceleration data is not large enough is made up, and misjudgment cannot occur. Therefore, two angular acceleration sensors need to be arranged on the front axle.
Alternatively, the reason why only one angular acceleration sensor may be mounted on the rear axle is that: because the rear axle judges that the wheels fall off the axle by using the acceleration difference or the inclination angle difference, each axle only judges that the axle falls off once, unlike the front axle, the wheels can be driven to go up the axle again after falling off the axle by turning, thereby the condition of falling off the axle for many times is generated. And the rear axle wheel falls off the bridge only when the front axle has passed the bridge or the front axle has not been on the bridge, the front axle can be buckled for 10 minutes in any one of the two states, and the whole project operation is unqualified as long as the deduction is greater than 10 minutes, so that the accumulated deduction is 20 minutes after the rear wheel has once fallen off the bridge, and the rear axle is provided with a sensor to meet the judgment requirement of the project, thereby saving the cost. If want the rear wheel also judge drop bridge many times, only need like the front axletree, respectively install a sensor can in the wheel both sides of rear axletree.
(14) And when the difference value of the acceleration data is in a first preset range, detecting whether the difference value of the inclination angle of the current wheel is beyond a second preset range.
Optionally, the first preset range and the second preset range may be set according to the height of the single-side bridge in the actual field, and the first preset range and the second preset range are not limited in the present application.
Optionally, when the acceleration data difference is within a first preset range, it may be stated that the occurring bridge dropping condition is a slow bridge dropping, and therefore, the judgment may be performed by using the inclination angle difference.
(15) And when the difference value of the inclination angles exceeds a second preset range, determining that the wheels fall off the axle.
(16) And when the difference value of the inclination angles is within a second preset range, determining that the wheels do not drop off the axle.
According to the method for detecting the falling of the single-side axle wheel, the real-time position of the vehicle is obtained, and the acceleration data detected by at least three angular acceleration sensors and the inclination angle of the vehicle are respectively and periodically obtained; and processing the obtained acceleration data and the inclination angle according to the real-time position of the vehicle to obtain a detection result whether the wheel falls off the bridge or not, so that an accurate single-side bridge wheel falling detection result can be obtained, the problem of misjudgment of falling off the bridge caused by low detection precision of a contact switch of a rolling button and satellite positioning error is solved, and the mechanical structure of a single-side bridge body is simplified.
The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A unilateral axle wheel falls axle detecting system which characterized in that includes: the system comprises at least three angular acceleration sensors, data acquisition equipment, a vehicle-mounted satellite positioning base station and data processing equipment;
the at least three angular acceleration sensors are respectively arranged on axles connected with wheels of a vehicle and periodically detect the acceleration and the inclination angle of the vehicle;
the data acquisition equipment is respectively connected with the at least three angular acceleration sensors and the data processing equipment, and acquires acceleration data and inclination angles detected by the at least three angular acceleration sensors in real time;
the vehicle-mounted satellite positioning base station is arranged on the vehicle and connected with the data processing equipment to obtain the real-time position of the vehicle in real time;
and the data processing equipment receives the acceleration data, the inclination angle and the real-time position and obtains a detection result of whether the wheels fall off the axle or not.
2. The single-side axle wheel drop-off detection system of claim 1, wherein two of the at least three angular acceleration sensors are disposed on a front axle of a vehicle and the remaining angular acceleration sensors are disposed on a rear axle of the vehicle.
3. The single-side axle wheel axle drop detection system of claim 2, wherein two of the at least three angular acceleration sensors are respectively disposed at both ends of a front axle of the vehicle at a predetermined distance near an inner side of the wheel.
4. The single-side axle wheel drop detection system of claim 3, wherein when the at least three angular acceleration sensors are three angular acceleration sensors, the first and second angular acceleration sensors are respectively disposed at both ends of a front axle of the vehicle at a predetermined distance near an inner side of the wheel, and the third angular acceleration sensor is disposed at an intermediate position of a rear axle of the vehicle.
5. The single-side axle wheel drop detection system of claim 3, wherein when the at least three angular acceleration sensors are four angular acceleration sensors, the first and second angular acceleration sensors are respectively disposed at both ends of a front axle of the vehicle at a predetermined distance near an inner side of the wheel, and the third and fourth angular acceleration sensors are respectively disposed at both ends of a rear axle of the vehicle at a predetermined distance near an inner side of the wheel.
6. The single-sided axle wheel drop axle detection system of any one of claims 1 to 5, further comprising at least three sensor fixing brackets;
the at least three sensor fixing supports are respectively arranged on axles connected with wheels of a vehicle and used for fixing the at least three angular acceleration sensors; the at least three sensor fixing supports and the at least three angular acceleration sensors are arranged in a one-to-one correspondence mode.
7. The single-side axle wheel axle drop detection system of claim 6, wherein the at least three sensor mounting brackets are welded to respective axles of the vehicle to which the wheels are attached.
8. The single-side axle wheel axle drop detection system of claim 1, wherein the data processing device is an onboard computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922116123.2U CN210893084U (en) | 2019-11-29 | 2019-11-29 | Unilateral axle wheel falls bridge detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116123.2U CN210893084U (en) | 2019-11-29 | 2019-11-29 | Unilateral axle wheel falls bridge detecting system |
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| CN210893084U true CN210893084U (en) | 2020-06-30 |
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