CN114604276A - Sanding control system, sanding control method and vehicle - Google Patents
Sanding control system, sanding control method and vehicle Download PDFInfo
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- CN114604276A CN114604276A CN202210208333.8A CN202210208333A CN114604276A CN 114604276 A CN114604276 A CN 114604276A CN 202210208333 A CN202210208333 A CN 202210208333A CN 114604276 A CN114604276 A CN 114604276A
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- sanding
- sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
- B61C15/08—Preventing wheel slippage
- B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
- B61C15/107—Preventing wheel slippage by depositing sand or like friction increasing materials with electrically or electromagnetically controlled sanding equipment
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Abstract
The invention belongs to the technical field of sanding control, and provides a sanding control system, a sanding control method and a vehicle. The sanding control system comprises an information acquisition module, a sanding control module and a sanding control module, wherein the information acquisition module is used for acquiring vehicle running state information; the sanding triggering module is used for immediately triggering sanding action when idle running or sliding signals exist in the vehicle running state information; the sand outlet adjusting module is used for determining the wind pressure of the air port according to the real-time speed in the vehicle running state information when the sanding action is triggered, and further adjusting the sand outlet; the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test; and the information detection module is used for detecting the wind pressure of the air port in real time so as to judge the working state of the sanding control system.
Description
Technical Field
The invention belongs to the technical field of sanding control, and particularly relates to a sanding control system, a sanding control method and a vehicle.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
For subway vehicles and high-speed railway vehicles, the current sanding scheme mainly comprises two schemes, namely a fixed sanding rate scheme and a variable sanding rate scheme. Among them, the fixed sanding rate has the following problems when the vehicle speed changes from high to low: the gravels spread on the rail surface are not uniform; when the vehicle speed is high, the rail surface gravel density is low, and the wheel rail adhesion cannot be effectively improved; when the vehicle speed is low, the rail face grit density is high, which causes grit waste, and too much grit affects signal transmission between the wheel rails. However, for the variable-speed sanding scheme, the working state of the sanding control system is not monitored in time at present, so that the stability of the sanding control system cannot be guaranteed, and the safe operation of a vehicle is influenced.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a sanding control system, a control method and a vehicle, which can save gravels, effectively improve wheel-rail adhesion, monitor the working state of the sanding control system in real time and ensure the safe operation of the vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
a first aspect of the present invention provides a sanding control system comprising:
the information acquisition module is used for acquiring vehicle running state information;
the sanding triggering module is used for immediately triggering sanding action when idle running or sliding signals exist in the vehicle running state information;
the sand outlet adjusting module is used for determining the wind pressure of the air port according to the real-time speed in the vehicle running state information when the sanding action is triggered, and further adjusting the sand outlet; the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test;
and the information detection module is used for detecting the wind pressure of the air port in real time so as to judge the working state of the sanding control system.
A second aspect of the present invention provides a sanding control method, comprising:
acquiring vehicle running state information;
when the vehicle running state information is detected to have idle running or sliding signals, a sanding action is immediately triggered;
when the sanding action is triggered, determining the wind pressure of the air port according to the real-time speed in the vehicle running state information, and further adjusting the sand outlet amount of the sanding port; the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test;
and detecting the wind pressure of the air port in real time to judge the working state of the sanding control system.
A third aspect of the invention provides a vehicle comprising a sanding control system as described above.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a sanding control system and a sanding control system, which judge whether to trigger sanding action or not by detecting that an idling or sliding signal exists in vehicle running state information, realize that sanding speed is controlled according to vehicle speed signal change, so as to adjust the density of gravel on a rail surface, effectively improve wheel rail adhesion when a vehicle is at a high speed, reduce sanding amount and save gravel when the vehicle is at a low speed; and the working state of the sanding control system can be monitored in real time, and early warning is sent to a vehicle network system and a ground control center when the state is abnormal, so that the stability of the sanding control system is guaranteed, and the safe operation efficiency of the vehicle is improved.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of a sanding control system according to an embodiment of the present invention;
FIG. 2 is a schematic view of an outlet structure according to an embodiment of the present invention;
fig. 3 is a schematic view of a connection structure of the sanding control system, the vehicle network system, the brake system, the traction system and the ground data center according to the embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
Referring to fig. 1, the present embodiment provides a sanding control system, which includes an information obtaining module, a sanding triggering module, a sanding amount adjusting module, and an information detecting module.
The specific implementation process of each module is given in detail as follows:
(1) information acquisition module
And the information acquisition module is used for acquiring the vehicle running state information.
Here, the vehicle running state information includes vehicle traveling direction information, a speed signal, a coasting signal, and an idling signal.
In one or more embodiments, the information acquisition module is coupled to the braking system and the traction system, respectively, via a vehicle network system.
The vehicle driving direction information, the speed signal and the coasting signal are acquired from a braking system; the idle signal is derived from the traction system.
The braking system and the traction system described herein are prior art and will not be described in detail herein.
(2) Sanding trigger module
And the sanding triggering module is used for immediately triggering sanding action when detecting that an idle running or sliding signal exists in the vehicle running state information.
Wherein, the time of a single sanding action is preset, such as t(s).
(3) Sand output adjusting module
The sand outlet adjusting module is used for determining the wind pressure of the air port according to the real-time speed in the vehicle running state information when the sanding action is triggered, and further adjusting the sand outlet; the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test.
In the specific implementation, when the sanding action is triggered, the air pressure P (kPa) of the air outlet needs to be adjusted according to the real-time vehicle speed v (km/h).
Specifically, the relationship between the air pressure P (kPa) and the sand outlet sand output M (g/s) of the sand spreading port is confirmed in the test stage, so that the sand gravel laying amount M (g/M) per meter of track in the running process of the vehicle is ensured, and the design standard requirement of vehicle adaptation is met.
For example: the british standard GMRT2461 requires: the sand spreader can maintain the sanding density not exceeding 7.5 g/m/rail:
when the wind pressure of a certain sanding device is 300kPa, the sand output of each 10s of a single sand outlet is 700g, namely the sand output speed is 70 g/s;
when the vehicle speed is 36km/h (namely 10M/s) and the running time on each meter of track is 0.1s, the sand laying amount M on each meter of track is 7 g/M;
when the vehicle speed is 72km/h (namely 20M/s), the running time on the rail per meter is 0.05s, and in order to ensure that the sand laying amount M on the rail per meter is 7g/M, the proper wind pressure needs to be adjusted, and the sand outlet speed of the sand outlet is controlled at 140 g/s.
(4) Information detection module
And the information detection module is used for detecting the wind pressure of the air port in real time so as to judge the working state of the sanding control system.
In specific implementation, the information detection module includes a first pressure detection element and a second pressure detection element, where the first pressure detection element is configured to detect an operating state of the electrical idle switching valve in the air outlet, and the second pressure detection element is configured to detect an operating state of the relay valve in the air outlet, as shown in fig. 2.
In fig. 2, the first pressure detecting element is a pressure sensor 1, and the second pressure detecting element is a pressure sensor 2.
In other embodiments, the second pressure sensing element may be replaced with a pressure switch.
On the premise of not departing from the concept of the invention, a plurality of changes and improvements can be made, for example, an overflow valve, a pressure reducing valve or a plug valve and the like can be added to the wind source part shown in fig. 2 on the basis of the structure.
In other embodiments, the information detection module is further configured to: and detecting the temperature, humidity and sand level state information in the sand box.
In one or more embodiments, the information detection module communicates with a ground data center via a vehicle network system, as shown in FIG. 3.
When the humidity or temperature signal of the sand box is detected to be abnormal, the vehicle network system sends prompt information such as sand scattering system faults to a vehicle monitoring screen and a ground data center, and the vehicle needs to be overhauled in time. When the sand level of the sand box is detected to be in the low sand level, the vehicle network system sends prompt information such as sand addition requirement to a vehicle monitoring screen and a ground data center, and the vehicle needs to be overhauled in time.
The embodiment combines the idle sliding detection of a braking system and a traction system and the real-time speed of the vehicle to carry out sand spraying action in a targeted manner. The vehicle network system is used as a transmission medium for signal transmission and early warning.
Example two
The embodiment provides a sanding control method, which comprises the following steps:
step 1: and acquiring vehicle running state information.
Here, the vehicle running state information includes vehicle traveling direction information, a speed signal, a coasting signal, and an idling signal.
Step 2: and when the vehicle running state information is detected to have idle running or sliding signals, immediately triggering the sanding action.
And step 3: when the sanding action is triggered, determining the wind pressure of the air port according to the real-time speed in the vehicle running state information, and further adjusting the sand outlet amount of the sanding port; and the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test.
In the specific implementation, when the sanding action is triggered, the air pressure P (kPa) of the air outlet needs to be adjusted according to the real-time vehicle speed v (km/h).
Specifically, the relationship between the air pressure P (kPa) and the sand outlet sand output M (g/s) of the sand spreading port is confirmed in the test stage, so that the sand gravel laying amount M (g/M) per meter of track in the running process of the vehicle is ensured, and the design standard requirement of vehicle adaptation is met.
For example: the british standard GMRT2461 requires: the sand spreader can keep the sand laying density not more than 7.5 g/m/rail:
when the wind pressure of a certain sanding device is 300kPa, the sand output of each 10s of a single sand outlet is 700g, namely the sand output speed is 70 g/s;
when the vehicle speed is 36km/h (namely 10M/s) and the running time on each meter of track is 0.1s, the sand laying amount M on each meter of track is 7 g/M;
when the vehicle speed is 72km/h (namely 20M/s), the running time on the rail per meter is 0.05s, and in order to ensure that the sand laying amount M on the rail per meter is 7g/M, the proper wind pressure needs to be adjusted, and the sand outlet speed of the sand outlet is controlled at 140 g/s.
And 4, step 4: and detecting the wind pressure of the air port in real time to judge the working state of the sanding control system.
In one or more embodiments, the sanding control method further comprises:
and detecting the working state of the electric idle change valve in the air outlet and the working state of the relay valve in the air outlet.
In one or more embodiments, the sanding control method further comprises:
and detecting the temperature, humidity and sand level state information in the sand box.
In one or more embodiments, the sanding control method further comprises:
and sending the judged working state of the sanding control system to a ground data center through a vehicle network system.
When the humidity or temperature signal of the sand box is detected to be abnormal, the vehicle network system sends prompt information such as sand scattering system faults to a vehicle monitoring screen and a ground data center, and the vehicle needs to be overhauled in time. When the sand level of the sand box is detected to be in the low sand level, the vehicle network system sends prompt information such as sand addition requirement to a vehicle monitoring screen and a ground data center, and the vehicle needs to be overhauled in time. When the working state of the sanding control system is judged to have fault information, the fault information can be fed back to the vehicle network system.
EXAMPLE III
The present embodiment provides a vehicle including a sanding control system as described above.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sanding control system, comprising:
the information acquisition module is used for acquiring vehicle running state information;
the sanding triggering module is used for immediately triggering sanding action when idle running or sliding signals exist in the vehicle running state information;
the sand outlet adjusting module is used for determining the wind pressure of the air port according to the real-time speed in the vehicle running state information when the sanding action is triggered, and further adjusting the sand outlet; the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test;
and the information detection module is used for detecting the wind pressure of the air port in real time so as to judge the working state of the sanding control system.
2. A sanding control system as defined in claim 1, wherein the information detection module includes a first pressure detection element for detecting an operating state of the electrically idle switch valve in the outlet and a second pressure detection element for detecting an operating state of the relay valve in the outlet.
3. A sanding control system as defined in claim 1, wherein the information detection module is further to: and detecting the temperature, humidity and sand level state information in the sand box.
4. A sanding control system as defined in claim 1 or 3, wherein the information detection module communicates with a ground data center through a vehicle network system.
5. A sanding control system as defined in claim 1 or 3, wherein the information acquisition module is connected to the brake system and the traction system, respectively, via a vehicle network system.
6. A sanding control method, comprising:
acquiring vehicle running state information;
when the idling or sliding signal exists in the vehicle running state information, a sanding action is immediately triggered;
when the sanding action is triggered, determining the wind pressure of the air port according to the real-time speed in the vehicle running state information, and further adjusting the sand outlet amount of the sanding port; the relation among the real-time vehicle speed, the air pressure of the air outlet and the sand outlet of the sand spreading port is determined according to a test;
and detecting the wind pressure of the air port in real time to judge the working state of the sanding control system.
7. A sanding control method as defined in claim 6, further comprising:
and detecting the working state of the electric idle change valve in the air outlet and the working state of the relay valve in the air outlet.
8. A sanding control method as defined in claim 6 or 7, further comprising:
and detecting the temperature, humidity and sand level state information in the sand box.
9. A sanding control method as defined in claim 6 or 7, further comprising:
and sending the judged working state of the sanding control system to a ground data center through a vehicle network system.
10. A vehicle, characterized in that it comprises a sanding control system according to any one of claims 1-5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210208333.8A CN114604276A (en) | 2022-03-03 | 2022-03-03 | Sanding control system, sanding control method and vehicle |
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| CN202210208333.8A CN114604276A (en) | 2022-03-03 | 2022-03-03 | Sanding control system, sanding control method and vehicle |
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