阅读说明：本技术 天线高度调节系统及车辆 (Antenna height adjusting system and vehicle ) 是由 张晓涛 荣志刚 徐晓波 田宇 于 2020-05-27 设计创作，主要内容包括：本申请公开了一种天线高度调节系统和车辆,其中前者包括天线、升降装置、感测器、调节控制器和主控制器；天线和升降装置固定连接；升降装置和调节控制器信号连接；调节控制器和感测器分别与主控制器信号连接；主控制器获取感测器感测的车辆行驶的轨道信息；根据轨道信息确认车辆前方为第一弯道的情况下,向调节控制器发送上升指令；调节控制器接收到上升指令后,控制升降装置带动天线上升；第一弯道的半径小于设定阈值。本申请提供的天线高度调节系统,根据感测到的轨道信息,确认车辆即将驶入半径较小的弯道的情况下,控制天线上升。从而可以避免车辆在驶入该弯道后,天线和轨道梁发生剐蹭的情况发生；避免天线损坏。(The application discloses an antenna height adjusting system and a vehicle, wherein the antenna height adjusting system comprises an antenna, a lifting device, a sensor, an adjusting controller and a main controller; the antenna is fixedly connected with the lifting device; the lifting device is in signal connection with the adjusting controller; the adjusting controller and the sensor are respectively in signal connection with the main controller; the main controller acquires the track information of the running vehicle sensed by the sensor; sending a rising instruction to an adjusting controller under the condition that the front of the vehicle is confirmed to be a first curve according to the track information; after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend; the radius of the first curve is smaller than a set threshold. According to the antenna height adjusting system, the antenna is controlled to ascend under the condition that the fact that the vehicle is about to drive into the curve with the smaller radius is confirmed according to the sensed track information. Therefore, the situation that the antenna and the track beam are scratched after the vehicle drives into the curve can be avoided; the antenna is prevented from being damaged.)

1. An antenna height adjustment system, comprising: the device comprises an antenna, a lifting device, a sensor, an adjusting controller and a main controller;

the antenna is fixedly connected with the lifting device; the lifting device is in signal connection with the adjusting controller; the adjusting controller and the sensor are respectively in signal connection with the main controller;

the main controller acquires the track information of the running vehicle sensed by the sensor; sending a rising instruction to the adjusting controller under the condition that the front of the vehicle is confirmed to be a first curve according to the track information; after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend; the radius of the first curve is smaller than a set threshold value.

2. The antenna height adjustment system according to claim 1, characterized in that after the case where it is confirmed from the track information that the vehicle is ahead of the first curve and before an up instruction is sent to the adjustment controller, the system further comprises:

confirming that a distance between the vehicle and the first curve is less than a first set value.

3. The antenna height adjustment system according to claim 2, wherein the first setting value has a value range of: the first set value is less than or equal to 1 kilometer and less than or equal to 2 kilometers.

4. The antenna height adjustment system of claim 1, further comprising:

after the antenna rises, sending a descending instruction to the adjusting controller under the condition that the front of the vehicle is confirmed to be a second curve according to the track information; after the adjusting controller receives the descending instruction, the lifting device is controlled to drive the antenna to descend; the radius of the second curve is greater than or equal to a set threshold.

5. The antenna height adjustment system according to claim 4, characterized in that after the case where it is confirmed from the track information that the vehicle is ahead of the second curve and before a descending instruction is sent to the adjustment controller, the system further comprises:

confirming that a distance between the vehicle and the first curve is less than a second set value.

6. The antenna height adjustment system according to claim 5, wherein the second setting value has a value range of: the second set value is less than or equal to 0.5 kilometer and less than or equal to 1 kilometer.

7. The antenna height adjustment system of claim 1, further comprising:

under the condition that the communication between the main controller and the adjusting controller is abnormal, the adjusting controller controls the lifting device to drive the antenna to ascend; under the condition that a signal system fails and the communication between the main controller and the adjusting controller is normal, the main controller sends a rising instruction to the adjusting controller; and after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend.

8. The antenna height adjustment system of claim 1, further comprising: a distance sensor;

the distance sensor is arranged on the antenna and is in signal connection with the main controller;

after the antenna rises and the vehicle enters the first curve, the main controller acquires a distance value monitored by the distance sensor; sending a descending instruction to the adjusting controller under the condition that the distance value is larger than a third set value; after the adjusting controller receives the descending instruction, the lifting device is controlled to drive the antenna to descend; the distance value is a height difference between the antenna and the track beam.

9. The antenna height adjustment system according to any one of claims 1 to 8, wherein the sensor includes any one of an image recognition sensor, an angle sensor, a laser radar, or a millimeter wave radar.

10. A vehicle characterized by comprising the antenna height adjustment system of any one of claims 1 to 9.

Technical Field

The application relates to the field of electrical technology, in particular to an antenna height adjusting system and a vehicle.

Background

Transponder transmission module (BTM) antennas play a very important role in signal systems. The BTM antenna may receive information from the transponder on the ground and transmit the information to a vehicle on-board controller (VOBC), which may use the received information to correct the vehicle position and calibrate range.

Generally, the BTM antenna is fixed on the bottom of the vehicle, and in order to receive the information of the ground transponder, the BTM antenna is not too high from the ground when being installed, so as to avoid that the BTM antenna cannot receive signals. However, when the vehicle travels in a track area with a small turning radius, the vehicle may scratch against the track beam, thereby causing damage to the BTM antenna.

Disclosure of Invention

The application aims to provide an antenna height adjusting system and a vehicle, when the vehicle runs to a track area with a smaller turning radius, the distance of one ascending end of an antenna is adjusted, so that the antenna is far away from a track beam, and the antenna and the track beam are prevented from being scratched.

The present application provides in a first aspect an antenna height adjustment system, comprising: the device comprises an antenna, a lifting device, a sensor, an adjusting controller and a main controller; the antenna is fixedly connected with the lifting device; the lifting device is in signal connection with the adjusting controller; the adjusting controller and the sensor are respectively in signal connection with the main controller; the main controller acquires the track information of the running vehicle sensed by the sensor; sending a rising instruction to the adjusting controller under the condition that the front of the vehicle is confirmed to be a first curve according to the track information; after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend; the radius of the first curve is smaller than a set threshold value.

The antenna height adjustment system as described above, wherein, after the confirmation of the first curve ahead of the vehicle based on the track information and before the transmission of the ascending command to the adjustment controller, the system further includes: confirming that a distance between the vehicle and the first curve is less than a first set value.

As above, the antenna height adjusting system, wherein the value range of the first setting value is: the first set value is less than or equal to 1 kilometer and less than or equal to 2 kilometers.

The antenna height adjustment system as described above, wherein, when it is confirmed that the front of the vehicle is the second curve based on the track information after the antenna is raised, a lowering command is transmitted to the adjustment controller; after the adjusting controller receives the descending instruction, the lifting device is controlled to drive the antenna to descend; the radius of the second curve is greater than or equal to a set threshold.

The antenna height adjustment system as described above, wherein, after the confirmation of the second curve ahead of the vehicle from the track information and before the transmission of the lowering instruction to the adjustment controller, the system further includes: confirming that a distance between the vehicle and the first curve is less than a second set value.

As above, in the antenna height adjusting system, the value range of the second setting value is: the second set value is less than or equal to 0.5 kilometer and less than or equal to 1 kilometer.

The antenna height adjustment system as described above, wherein the system further comprises: under the condition that the communication between the main controller and the adjusting controller is abnormal, the adjusting controller controls the lifting device to drive the antenna to ascend; under the condition that a signal system fails and the communication between the main controller and the adjusting controller is normal, the main controller sends a rising instruction to the adjusting controller; and after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend.

The antenna height adjustment system as described above, wherein the system further comprises: a distance sensor; the distance sensor is arranged on the antenna and is in signal connection with the main controller; after the antenna rises and the vehicle enters the first curve, the main controller acquires a distance value monitored by the distance sensor; sending a descending instruction to the adjusting controller under the condition that the distance value is larger than a third set value; after the adjusting controller receives the descending instruction, the lifting device is controlled to drive the antenna to descend; the distance value is a height difference between the antenna and the track beam.

The antenna height adjustment system as described above, wherein the sensor includes any one of an image recognition sensor, an angle sensor, a laser radar, or a millimeter wave radar.

A second aspect of the present application provides a vehicle comprising the antenna height adjustment system of any one of the first aspects of the present application.

The application provides an antenna height control system, when the vehicle was gone in the less track region of turning radius, control antenna rose to avoid antenna and track roof beam to cut and rub, avoid the antenna to damage.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings used in the embodiments will be briefly described below.

Fig. 1 is a block diagram of an antenna height adjustment system provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a working flow of an antenna height adjusting system provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a working flow of an antenna height adjusting system provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of an antenna installation position of a vehicle according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a vehicle on a first curve according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an antenna height adjustment system provided in a vehicle according to an embodiment of the present application;

fig. 7 is a schematic flowchart of an antenna height adjustment system according to an embodiment of the present application.

Description of reference numerals:

10-antenna, 20-lifting device, 30-sensor, 40-adjusting controller, 50-main controller; 100-vehicle, 110-track, 120-track beam.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

The antenna height adjustment system that this application embodiment provided includes: antenna 10, lifting device 20, sensor 30, adjustment controller 40 and main controller 50. Those skilled in the art will appreciate that the main controller 50 may be a VOBC, and the antenna may be a BTM antenna; the controller may be any one of an Industrial Personal Computer (IPC), a Programmable Logic Controller (PLC), and a Distributed Control System (DCS).

In addition, the antenna height adjusting system provided by the embodiment of the application is used on vehicles, and is particularly suitable for vehicles running on rails, such as rail trains like subways, high-speed rails, light rails and motor cars. Therefore, the embodiment of the present application also provides a vehicle 100 including the antenna height adjusting system provided in any embodiment of the present application. Referring to fig. 4 to 6, fig. 4 shows that the antenna 10 is mounted on the bottom of the vehicle 100 at a height from the ground of the laying track 110, with reference to the information that the antenna 10 can clearly receive ground transponders; the vehicle travels along the rail beam 120. Fig. 5 shows the position of the antenna 10 when the vehicle 100 is traveling in the first curve. Fig. 6 shows that a sensor 30 is arranged at the upper part of the vehicle 100, and the antenna 10 is fixedly connected with the lifting device 20; the lifting device 20 is in signal connection with the adjusting controller 40; the regulating controller 40 and the sensor 30 are in signal connection with the main controller 50.

Referring to fig. 1, it can be seen that the antenna 10 is fixedly connected to the lifting device 20; the lifting device 20 is in signal connection with the adjusting controller 40; the regulating controller 40 and the sensor 30 are in signal connection with the main controller 50. Specifically, the throttle controller 40 and the main controller 50 may be connected by a hard wire or a Controller Area Network (CAN) bus as long as signal transmission is possible. And the device adopts hard wire connection, so that the accuracy is higher and the maintenance is easy. And the CAN bus is adopted for connection, so that the signal transmission speed is high, the occupied space of the wiring harness is saved, and the anti-interference capability is high.

Alternatively, the sensor 30 may be any one of an image recognition sensor, an angle sensor, a laser radar, or a millimeter wave radar; the sensor 30 is installed at the top or bottom of the head compartment of the vehicle at a position where the front rail information can be quickly sensed. The lifting device 20 comprises a lifting mechanical arm which is simple in structure, easy to control and low in cost.

The work flow of the system is as follows: the main controller 50 acquires the track information of the vehicle driving sensed by the sensor 30, confirms that the front of the vehicle is a first curve according to the track information, and sends a rising instruction to the adjusting controller 40; after receiving the ascending instruction, the adjusting controller 40 controls the lifting device 20 to drive the antenna 10 to ascend; the radius of the first curve is smaller than a set threshold value. The set threshold is the critical radius from scratch to scratch of the antenna and the track beam. Of course, it is preferable to set the radius larger than the critical radius. For example, when the radius of the first curve is 50 meters, the bottom end of the antenna slightly contacts with the top end of the track beam to scratch; the set threshold value can be determined to be between 55 meters and 60 meters, and the antenna can be prevented from being scratched by the track beam.

A first workflow of the antenna height adjusting system provided by the embodiment of the present application is listed below:

referring to fig. 2, the first workflow includes steps S10 to S50. Specifically, the method comprises the following steps:

step S10: the sensor senses track information on which the vehicle travels. The track information may be image information detected by an image sensor, may also be angle information detected by an angle sensor, and may be topographic information detected by a laser radar or a millimeter wave radar, and the like.

Step S20: the main controller acquires track information. The main controller CAN acquire the track information through the CAN bus.

Step S30: and judging whether the front of the vehicle is a first curve with the radius smaller than a set threshold value or not according to the track information. If so, go to step S40; if not, return is made to step S20. The main controller 50 determines that the track 110 ahead of the vehicle is a curve based on the image information, the angle information, the terrain information, and the like, and then determines the radius of the curve.

Step S40: an up command is sent to the throttle control.

Step S50: and after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend.

Therefore, the antenna height adjusting system provided by the embodiment of the application controls the antenna to ascend under the condition that the vehicle is confirmed to be about to drive into the curve with the smaller radius according to the sensed track information. Therefore, the situation that the antenna and the track beam are scratched after the vehicle drives into the curve can be avoided; the antenna is prevented from being damaged.

Further, after the case where it is confirmed that the vehicle ahead is the first curve according to the track information and before the up command is sent to the adjustment controller 40, the system further includes: confirming that a distance between the vehicle and the first curve is less than a first set value. Since it takes a certain time for the elevating device 20 to raise the antenna 10, it is necessary to raise the antenna 10 before the vehicle enters the first curve. But also not to control the antenna 10 to rise at a particular distance from the first bend in order to avoid that the antenna 10 is unable to receive signals from ground transponders for a long time. Therefore, after the vehicle is away from the first set value of the first curve, the antenna 10 is controlled to rise, so that the antenna 10 can be ensured to rise in time, and the antenna 10 can be prevented from receiving signals of the ground transponder for a long time. The first set value may be selected to ensure that the antenna 10 is raised before the vehicle enters the first curve. The specific value range may be determined according to the traveling speed of the vehicle and the time required for the antenna 10 to ascend.

Alternatively, for example, the speed of the vehicle is 80 kilometers per hour, and the lifting device 20 takes ten seconds to twenty seconds to drive the antenna 10 to ascend. The value range of the first set value can be as follows: the first set value is less than or equal to 1 kilometer and less than or equal to 2 kilometers. The main controller 50 sends an up command to the adjustment controller 40 at a distance of 1 km to 2 km before the vehicle enters the first curve, so that the antenna 10 may have risen before the vehicle enters the first curve. Avoiding a scratch between the antenna 10 and the track beam 120, which may also result from the antenna 10 being in a rising state or a non-rising state when the vehicle has driven into the first curve. In addition, setting the above value range does not cause the antenna 10 to rise too early, so that the antenna 10 cannot receive the signal of the ground transponder for a long time.

Referring to fig. 3, a second operation flow of the antenna height adjusting system according to the embodiment of the present application is described below. The method specifically comprises the following steps:

step S10: the sensor senses track information on which the vehicle travels. The track information may be image information detected by an image sensor, may also be angle information detected by an angle sensor, and may be topographic information detected by a laser radar or a millimeter wave radar, and the like.

Step S20: the main controller acquires track information. The main controller CAN acquire the track information through the CAN bus.

Step S30: and judging whether the front of the vehicle is a first curve with the radius smaller than a set threshold value or not according to the track information. If so, go to step S40; if not, return is made to step S20. The main controller 50 determines that the track ahead of the vehicle is a curve based on the image information, angle information, terrain information, and the like, and then determines the radius of the curve.

Step S40: the distance between the vehicle and the first curve is identified. The main controller 50 calculates a distance between the head of the vehicle and the first curve based on the track information.

Step S50: it is determined whether a distance between the vehicle and the first curve is less than a first set value. If so, go to step S60; if not, return is made to step S40.

Step S60: an up command is sent to the throttle control.

Step S70: and after receiving the ascending instruction, the adjusting controller controls the lifting device to drive the antenna to ascend.

As can be seen from the above, the antenna height adjusting system provided in the embodiment of the present application, according to the sensed track information, confirms that the vehicle is about to drive into a curve with a smaller radius, and controls the antenna 10 to ascend when the distance from the vehicle to the first curve is a first set distance. Therefore, the antenna 10 can be ensured to be lifted before the vehicle drives into the first curve, the situation that the antenna 10 and the track beam 120 are scratched after the vehicle drives into the curve is avoided, and the antenna 10 is prevented from being damaged.

Further, the system further comprises: after the antenna rises, sending a descending instruction to the adjusting controller 40 under the condition that the front of the vehicle is confirmed to be a second curve according to the track information; after receiving the descending instruction, the adjusting controller 40 controls the lifting device 20 to drive the antenna 10 to descend; the radius of the second curve is greater than or equal to a set threshold. It should be noted that the radius of the second curve is greater than or equal to the set threshold, including the case where the second curve is a curve with a larger diameter and the case where the second curve is a straight line. That is, when it is determined that the vehicle has traveled away from a curve with a small radius and the front of the curve has a large diameter or a straight road according to the sensed track information, the antenna 10 is controlled to descend, so that the antenna 10 can normally receive information of the ground transponder, and the antenna 10 cannot receive information of the ground transponder for a long time.

Optionally, after the case where it is determined that the vehicle ahead is a second curve according to the track information and before a descending instruction is sent to the adjustment controller 40, the system further includes: confirming that a distance between the vehicle and the first curve is less than a second set value.

It is confirmed that the vehicle has traveled off the first curve and has traveled a certain distance away from the first curve, and the antenna 10 is controlled to descend again. On the one hand, enough time is reserved for the confirmation of the track information; on the other hand, it is avoided that on the track 110 section of successive curves, the vehicle has just traveled a first curve, followed by a second first curve within a short distance. Then the following situation occurs: the vehicle is controlled to descend the antenna 10 immediately after exiting one first bend, and then the vehicle enters a second first bend several hundred meters later, and the antenna 10 needs to be controlled to ascend immediately. When it is confirmed that the vehicle has traveled away from the first curve and has traveled away from the first curve by a predetermined distance, the antenna 10 is controlled to descend, and the antenna 10 is prevented from entering the ascending state from the ascending state to the descending state. Particularly, when the vehicle speed is fast, the antenna 10 may not rise in time, and the vehicle has already entered the second first curve, which may cause the antenna 10 and the track beam 120 to be scratched.

The value range of the second set value may be determined according to the average traveling speed of the vehicle and the time required for the antenna 10 to descend. The time required for the antenna 10 to descend is ten seconds to twenty seconds at a speed of the vehicle of 100 kilometers per hour. Optionally, the value range of the second setting value is: the second set value is less than or equal to 0.5 kilometer and less than or equal to 1 kilometer. Setting the value range can make the following contributions for the vehicle with the vehicle speed of 100 kilometers per hour: on the one hand, enough time is reserved for the confirmation of the track information; on the other hand, on the track 110 section of the continuous curve, the vehicle just drives out a first curve, and a second first curve occurs after about 1 kilometer or even hundreds of meters. At this time, the vehicle immediately controls the antenna 10 to descend after driving out of one first curve, and then the vehicle drives into a second first curve several hundred meters later, and the antenna 10 needs to be immediately controlled to ascend. Setting the value range for the second setting value can prevent the antenna 10 from entering the rising state immediately after the rising state is called the falling state. Particularly, when the vehicle speed is fast, the antenna 10 may not rise in time, and the vehicle has already entered the second first curve, which may cause the antenna 10 and the track beam 120 to be scratched.

Referring to fig. 7, a third operation flow of the antenna height adjusting system according to the embodiment of the present application is shown:

the third workflow includes steps S10 to S120, wherein steps S10 to S70 are the same as steps S10 to S70 in the second workflow, and are not described again. Steps S80 to S120 are detailed below.

Step S80: and judging whether the front of the vehicle is a second curve with the radius larger than or equal to a set threshold value or not according to the track information. If so, go to step S90; if not, return is made to step S20.

Step S90: the distance between the vehicle and the first curve is identified. The main controller calculates the distance between the tail of the vehicle and the first curve according to the track information. That is, the distance from the first curve when the vehicle continues to travel forward after leaving the first curve.

Step S100: and judging whether the distance between the vehicle and the first curve is larger than a second set value or not. If yes, go to step S110; if not, return is made to step S90.

Step S110: a down command is sent to the throttle control.

Step S120: and after receiving the descending instruction, the adjusting controller controls the lifting device to drive the antenna to descend.

Further, in order to avoid a signal system failure, the main controller 50 sends an error command or fails to send a command to the adjusting controller 40, resulting in an abnormal rise or fall of the antenna 10. In the case that the communication between the main controller 50 and the adjustment controller 40 is abnormal, the adjustment controller 40 controls the elevating device 20 to lift the antenna 10. In the case of a signal system failure and the normal communication between the main controller 50 and the regulation controller 40, the main controller 50 sends an up command to the regulation controller 40; after receiving the ascending command, the adjusting controller 40 controls the lifting device 20 to drive the antenna 10 to ascend. The signal failure includes: the signal system fails, such as an Automatic Train Operation (ATO) failure or an Automatic Train Protection (ATP) failure, but the master controller may also communicate with the regulating controller, and the master controller is set to default to send a rising instruction to the regulating controller.

That is, the antenna 10 is controlled to ascend whenever the signal system fails regardless of whether the main controller 50 and the adjusting controller 40 can normally communicate. In the event of a signal system failure, the vehicle is prevented from driving into the first bend while the antenna 10 is still in the non-raised state, thereby causing the antenna 10 and the track beam 120 to be scratched.

Still further, the antenna height adjustment system further includes a distance sensor. The distance sensor is arranged on the antenna 10, and the distance sensor is in signal connection with the main controller 50.

After the antenna 10 ascends and the vehicle enters the first curve, the main controller 50 acquires a distance value monitored by the distance sensor; the distance value is the distance between the antenna 10 and the track beam 120; sending a descending instruction to the adjusting controller 40 when the distance value is confirmed to be larger than a third set value; after receiving the descending command, the adjusting controller 40 controls the lifting device 20 to drive the antenna 10 to descend. The third setting value may be, for example, 30 cm, and the distance between the antenna 10 and the track beam 120 is relatively long, so that the antenna does not collide with the track beam even after descending, and thus the descending of the antenna can be controlled. The height of the drop may be, for example, between 20 cm and 25 cm.

That is, when it is detected that the height interval between the antenna 10 and the track beam 120 is relatively large and there is a space for the antenna 10 to descend after the antenna 10 ascends and the vehicle enters the first curve, the antenna 10 is controlled to descend. Due to terrain or different track models, some track beams 120 may be relatively low, while some track beams 120 may be relatively high. Thus uniformly controlling the antenna 10 to ascend before entering the first turn.

After entering the first bend, the distance between the top of the track beam 120 and the antenna 10 is determined to be relatively large by the distance sensor, that is, the track beam 120 is of a relatively low model, and at this time, the antenna 10 can be controlled to descend, so that the antenna 10 can normally receive signals of ground transponders. Especially for the case that the first bend is relatively long, the antenna 10 receives the signal of the ground transponder, which is beneficial to correcting the vehicle position and calibrating mileage.

It is emphasized that the specific height of the antenna to be raised and lowered is determined by the distance between the top end of the actual track beam and the bottom end of the antenna, and the distances between the antennas of different vehicles and track beams of different models are different, so long as it is ensured that the bottom end of the antenna is higher than the top end of the track beam after entering the first bend. And ensuring that the vehicle drives away from the first bend, and after the antenna is descended, receiving a ground transponder signal.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only provided to help understand the method and the core concept of the present application.