CN111413022A - Wind pressure fault judgment system and method and train - Google Patents
Wind pressure fault judgment system and method and train Download PDFInfo
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- CN111413022A CN111413022A CN202010429816.1A CN202010429816A CN111413022A CN 111413022 A CN111413022 A CN 111413022A CN 202010429816 A CN202010429816 A CN 202010429816A CN 111413022 A CN111413022 A CN 111413022A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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Abstract
The embodiment of the application discloses a wind pressure fault judgment system, a method and a train, wherein the system comprises: the alarm relay comprises a power supply, a first pressure detection switch, a delay relay coil, a delay relay contact and an alarm relay coil, wherein the first pressure detection switch is connected with the delay relay coil, the delay relay contact is connected with the alarm relay coil, and when the first pressure detection disconnection time is less than the preset delay time or the first pressure detection switch is not disconnected, the delay relay contact is kept closed, so that the alarm relay coil is electrified; when the turn-off time of the first pressure detection switch is greater than or equal to the preset delay time, the contact of the delay relay is controlled to be turned off, so that the coil of the alarm relay is powered off, and an alarm is triggered. Can realize delaying to the disconnection of first pressure detection switch, prevent that first pressure detection switch from because the instantaneous interruption leads to alarm relay coil to lose electricity and triggers the alarm, improves the accuracy to wind pressure fault judgement.
Description
Technical Field
The application relates to the technical field of vehicle control, in particular to a wind pressure fault judgment system, a wind pressure fault judgment method and a train.
Background
The train is provided with an air supply system which is used for providing compressed air with certain pressure so as to meet the air demand in the running process of the train. In the running process of the train, the total wind pressure of the train needs to be judged, and the normal total wind pressure is ensured. When the total wind pressure can not meet the running requirement of the train, safety measures such as stopping are taken to ensure the safe running of the train.
However, the running environment of the train is complex, and when the total wind pressure of the train is judged, the train is easily affected by interference factors, which may cause erroneous judgment of the total wind pressure and affect normal operation of the train.
Disclosure of Invention
In view of this, embodiments of the present application provide a system and a method for determining a wind pressure fault, and a train, which can improve accuracy of determining a wind pressure fault.
In order to solve the above problem, the technical solution provided by the embodiment of the present application is as follows:
in a first aspect, the present application provides a wind pressure fault determination system, the system includes: the alarm relay comprises a power supply, a first pressure detection switch, a delay relay coil, a delay relay contact and an alarm relay coil;
the first end of the first pressure detection switch is connected with the first stage of the power supply, the second end of the first pressure detection switch is connected with the first end of the time delay relay coil, and the second end of the time delay relay coil is connected with the second stage of the power supply;
the first end of the delay relay contact is connected with the first stage of the power supply, the second end of the delay relay contact is connected with the first end of the alarm relay coil, and the second end of the alarm relay coil is connected with the second stage of the power supply;
the time delay relay coil is used for keeping the contact of the time delay relay closed if the disconnection time of the first pressure detection switch is less than the preset time delay time or the first pressure detection switch is not disconnected; and if the turn-off time of the first pressure detection switch is greater than or equal to the preset delay time, controlling the contact of the delay relay to be turned off, so that the coil of the alarm relay is powered off, and triggering an alarm.
Optionally, the first pressure detection switch is a 590 kpa total wind pressure detection switch; the 590 kilopascal total wind pressure detection switch is used for switching off when the total wind pressure is detected to be less than or equal to 590 kilopascals.
Optionally, the system further includes: the first working condition switch, the second working condition switch and the second pressure detection switch;
the first end of the first working condition switch is connected with the first stage of the power supply, and the second end of the first working condition switch is connected with the first end of the first pressure detection switch;
the first end of the second working condition switch is connected with the first stage of the power supply, the second end of the second working condition switch is connected with the first end of the second pressure detection switch, and the second end of the second pressure detection switch is connected with the first end of the time delay relay coil.
Optionally, when the first operating condition switch is a normal operating condition switch, the first pressure detection switch is a first total wind pressure detection switch; the first total wind pressure detection switch is used for switching off when the total wind pressure is detected to be less than or equal to a first threshold value;
when the second working condition switch is a rescue working condition switch, the second pressure detection switch is a second total wind pressure detection switch; and the second total wind pressure detection switch is used for switching off when the total wind pressure is detected to be less than or equal to a second threshold value.
Optionally, the system further includes:
the working condition switch controller is used for acquiring the current working condition; if the current working condition is a first working condition, controlling the first working condition switch to be closed; and if the current working condition is a second working condition, controlling the switch of the second working condition to be closed. Optionally, the alarm relay coil is an emergency brake relay coil; and the emergency braking relay coil is used for triggering emergency braking when power is lost.
Optionally, the power supply is a 110 v dc power supply.
In a second aspect, the present application provides a wind pressure fault determining method applied to the wind pressure fault determining system, where the method includes:
the time delay relay coil judges whether the off time of the first pressure detection switch is greater than or equal to the preset time delay time;
if the off time of the first pressure detection switch is less than the preset delay time or the first pressure detection switch is not off, keeping a contact of the delay relay closed;
and if the off time of the first pressure detection switch is greater than or equal to the preset delay time, controlling the contact of the delay relay to be switched off, so that the coil of the alarm relay is powered off, and triggering an alarm.
Optionally, the method is further applied to the wind pressure fault determination system, and the method further includes:
the working condition switch controller acquires the current working condition; if the current working condition is a first working condition, controlling a switch of the first working condition to be closed; and if the current working condition is the second working condition, controlling the switch of the second working condition to be closed.
In a third aspect, the present application provides a train, including any one of the above wind pressure failure determination systems.
Therefore, the embodiment of the application has the following beneficial effects:
the wind pressure fault judgment system that this application embodiment provided includes power, first pressure detection switch, delay relay coil, delay relay contact and alarm relay coil among, through being connected first pressure detection switch and delay relay coil, delay relay contact and alarm relay coil can realize the disconnection time delay of first pressure detection switch through delay relay coil. When the first pressure detection disconnection time is less than the preset delay time or the first pressure detection switch is not disconnected, keeping the contact of the delay relay closed, and enabling the coil of the alarm relay to be electrified; when the off time of the first pressure detection switch is greater than or equal to the preset delay time, the contact of the delay relay is controlled to be disconnected, so that the coil of the alarm relay is powered off, and an alarm is triggered. Therefore, the first pressure detection switch can be prevented from triggering alarm due to the fact that the alarm relay coil is powered off due to instantaneous interruption, and accuracy of wind pressure fault judgment is improved.
Drawings
Fig. 1 is a schematic structural diagram of a wind pressure fault determining system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another wind pressure fault determining system according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a wind pressure fault determination method according to an embodiment of the present application.
Detailed Description
In order to facilitate understanding and explaining the technical solutions provided by the embodiments of the present application, the following description will first describe the background art of the present application.
After researching a traditional wind pressure fault judging system in a train, the inventor finds that the existing wind pressure fault judging system only detects wind pressure by means of a pressure detection switch. When the wind pressure can not meet the preset wind pressure, the pressure detection switch is disconnected, and an alarm is triggered. However, in the actual running process of the train, if a special running condition occurs, the pressure detection switch is momentarily broken, so that the wind pressure fault judgment system judges that the wind pressure is in fault, and an alarm is triggered.
Based on this, the embodiment of the present application provides a wind pressure fault determination system, and this system includes: the alarm relay comprises a power supply, a first pressure detection switch, a delay relay coil, a delay relay contact and an alarm relay coil; the first end of the first pressure detection switch is connected with the first stage of the power supply, the second end of the first pressure detection switch is connected with the first end of the time delay relay coil, and the second end of the time delay relay coil is connected with the second stage of the power supply; the first end of the delay relay contact is connected with the first stage of the power supply, the second end of the delay relay contact is connected with the first end of the alarm relay coil, and the second end of the alarm relay coil is connected with the second stage of the power supply; the time delay relay coil is used for keeping the contact of the time delay relay closed if the disconnection time of the first pressure detection switch is less than the preset time delay time or the first pressure detection switch is not disconnected; and if the turn-off time of the first pressure detection switch is greater than or equal to the preset delay time, controlling the contact of the delay relay to be turned off, so that the coil of the alarm relay is powered off, and triggering an alarm.
In order to facilitate understanding of the technical solutions provided in the embodiments of the present application, the following describes an operating principle of a wind pressure fault determination system provided in the embodiments of the present application with reference to the accompanying drawings.
Referring to fig. 1, the diagram is a schematic structural diagram of a wind pressure fault determining system according to an embodiment of the present application.
As shown in fig. 1, the system is composed of a power source VCC, a first pressure detecting switch K1, a delay relay coil J1, a delay relay contact K2, and an alarm relay coil J2.
A first end of a first pressure detection switch K1 is connected with a first stage of the power supply VCC, a second end of the first pressure detection switch K1 is connected with a first end of the time delay relay coil J1, and a second end of the time delay relay coil J1 is connected with a second stage of the power supply VCC;
the first end of time delay relay contact K2 is connected the first level of power VCC, the second end of time delay relay contact K2 is connected the first end of alarm relay coil J2, the second end of alarm relay coil J2 is connected the second level of power VCC.
The delay relay coil J1 can control the open and close state of the delay relay contact K2, and the kind of the delay relay contact K2 can be determined according to the working principle of the alarm relay coil J2. In the present embodiment, the alarm relay coil J2 may trigger an alarm when it is de-energized. The corresponding delay relay contact K2 can be selected from a normally closed delay relay contact K2, namely when a delay relay coil J1 is electrified, the delay relay contact K2 keeps a closed state; when the delay relay coil J1 is de-energized and the preset delay time is met, the delay relay contact K2 is switched to the off state.
By connecting the first pressure detecting switch K1 with the delay relay coil J1, the off time of the first pressure detecting switch K1 can be delayed by the delay relay coil J1. Specifically, if the first pressure detection switch K1 is not turned off, the delay relay coil J1 is kept in an energized state, and the corresponding delay relay contact K2 is kept in a closed state; if the first pressure detection switch K1 is turned off, the time delay relay coil J1 is de-energized. Further, if the first pressure detection switch K1 has a short off time which is less than a preset delay time, the delay relay coil J1 controls the delay relay contact K2 to keep a closed state; if the first pressure detection switch K1 off-time is longer, equal to or greater than the preset delay time, the delay relay coil J1 controls the delay relay contact K2 to be switched off, so that the alarm relay coil connected with the delay relay coil J1 is powered off, and an alarm is triggered. Wherein, the preset delay time may be 0.5 second.
Under a possible condition, the lowest threshold value of the wind pressure when the train operates is 590 kilopascals, and when the wind pressure when the train operates is less than 590 kilopascals, the normal operation of the train cannot be met, and the wind pressure fault needs to be eliminated. Correspondingly, the first pressure detection switch K1 may be a 590 kpa total wind pressure detection switch for detecting the total wind pressure of the train. And if the total wind pressure is detected to be less than or equal to 590 kPa, the relay is switched off, so that a delay relay coil J1 connected with the 590 kPa total wind pressure detection switch is powered off, and after the preset delay time is reached, a delay relay contact K2 is switched off, and an alarm is triggered.
It should be noted that the alarm relay coil J2 in the embodiment of the present application can adjust the alarm level according to the pressure threshold corresponding to the first pressure detection switch K1. For example, when the pressure threshold value corresponding to the first pressure detection switch K1 is the pressure threshold value corresponding to the emergency braking of the train, the alarm relay coil J2 is an emergency braking relay coil for triggering the emergency braking when the power is lost.
In the embodiment of the application, the power supply can be a 110-volt direct-current power supply, and the power supply system in the train can provide electric energy.
By last, through being connected first pressure detection switch and delay relay coil, be connected alarm relay coil and delay relay contact, can detect first pressure detection switch's state through delay relay coil, and then control delay relay contact and carry out corresponding closure and disconnection, trigger alarm relay coil work, realize the judgement to the wind pressure trouble. Through setting up the time delay relay, can guarantee that wind pressure fault judgement system can comparatively work steadily, avoid because disturb or under comparatively special running state, carry out wrong judgement to the wind pressure trouble, influence the normal operating of train.
Furthermore, the train operation may have multiple working conditions, and the lowest wind pressure threshold value required to be met is different corresponding to different working conditions. Based on this, this application embodiment still provides a wind pressure fault judgement system, can confirm different wind pressures according to the operating mode of difference, realizes the wind pressure fault judgement under the multiplex condition.
Referring to fig. 2, the diagram is a schematic structural diagram of another wind pressure fault determination system provided in the embodiment of the present application.
As shown in fig. 2, the system is composed of a power source VCC, a first pressure detection switch K1, a second pressure detection switch K3, a first operating switch Ka, a second operating switch Kb, a delay relay contact K2, a delay relay coil J1, and an alarm relay coil J2.
A first end of a first working condition switch Ka is connected with a first stage of the power supply VCC, a second end of the first working condition switch Ka is connected with a first end of a first pressure detection switch K1, a second end of a first pressure detection switch K1 is connected with a first end of a delay relay coil J1, and a second end of a delay relay coil J1 is connected with a second stage of the power supply VCC;
a first end of a second working condition switch Kb is connected with a first stage of the power supply VCC, a second end of the second working condition switch KbKb is connected with a first end of a second pressure detection switch K3, a second end of the second pressure detection switch K3 is connected with a first end of a delay relay coil J1, and a second end of a delay relay coil J1 is connected with a second stage of the power supply VCC;
the first end of time delay relay contact K2 is connected the first level of power VCC, the second end of time delay relay contact K2 is connected the first end of alarm relay coil J2, the second end of alarm relay coil J2 is connected the second level of power VCC.
It should be noted that the first operating mode switch Ka and the second operating mode switch Kb correspond to different operating modes of the train. In one possible implementation, the first operating condition switch Ka may be a normal operation operating condition switch, and the second operating condition switch Kb may be a rescue operating condition switch. Correspondingly, the first pressure detection switch K1 corresponding to the first operating condition switch Ka may be a first total wind pressure detection switch, and the pressure threshold value at the time of disconnection corresponding to the first total wind pressure detection switch is a first threshold value. The second pressure detection switch K3 corresponding to the second operating condition switch Kb may be a second total wind pressure detection switch, and the pressure threshold value when the second total wind pressure detection switch is turned off is a second threshold value. Wherein, first threshold value and second threshold value can be according to the required wind pressure of train operation and set up. For example, the first threshold corresponding to the first total wind pressure detection switch may be 590 kpa; the second threshold corresponding to the second total wind pressure detection switch may be 340 kpa.
For different working conditions, the first working condition switch Ka and the second working condition switch Kb can be controlled by setting the working condition switch controller. Specifically, the operating condition switch controller may be configured to obtain a current operating condition of the train during operation. If the current working condition is a first working condition, controlling the first working condition switch Ka to be closed; and if the current working condition is a second working condition, controlling the second working condition switch Kb to be closed. It should be noted that, in order to avoid the wind pressure detection confusion caused by multiple operating modes, only one of the first operating mode switch Ka and the second operating mode switch Kb may be in the closed state at the same time.
It should be noted that the embodiments of the present application do not limit the method for controlling the first operating condition switch Ka and the second operating condition switch Kb by the operating condition switch controller. In a possible implementation manner, the operating condition switch controller may be a relay, and the first operating condition switch Ka or the second operating condition switch Kb is controlled to be closed by controlling the power-on state or the power-off state of the operating condition switch controller.
In this application embodiment, through setting up first operating mode switch, second operating mode switch and second pressure detection switch, can realize detecting the wind pressure to the multiplex condition. And first pressure detection switch and second pressure detection switch all are connected with time delay relay coil, can realize the accurate detection to the multiplex condition wind pressure trouble, can prevent to disturb the inaccurate problem of wind pressure fault detection that causes, have improved the security that the train travel.
Based on the wind pressure fault determination system provided by the above embodiment, the embodiment of the present application further provides a wind pressure fault determination method, which is specifically described below with reference to the accompanying drawings.
Referring to fig. 3, the figure is a flowchart of a wind pressure fault determination method provided in the embodiment of the present application.
The method comprises the following steps:
s301: and the time delay relay coil judges whether the off time of the first pressure detection switch is greater than or equal to the preset time delay time.
S302: and if the off time of the first pressure detection switch is less than the preset delay time or the first pressure detection switch is not switched off, keeping the contact of the delay relay closed.
S303: and if the off time of the first pressure detection switch is greater than or equal to the preset delay time, controlling the contact of the delay relay to be switched off, so that the coil of the alarm relay is powered off, and triggering an alarm.
Optionally, the method is further applied to a wind pressure fault determination system with a duty switch controller, and the method further includes:
the working condition switch controller acquires the current working condition; if the current working condition is a first working condition, controlling a switch of the first working condition to be closed; and if the current working condition is the second working condition, controlling the switch of the second working condition to be closed.
In addition, based on the wind pressure fault judging system that above-mentioned embodiment provided, this application embodiment still provides a train, dispose above-mentioned wind pressure fault judging system on the train.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the system or the device disclosed by the embodiment, the description is simple because the system or the device corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A wind pressure failure judgment system, comprising: the alarm relay comprises a power supply, a first pressure detection switch, a delay relay coil, a delay relay contact and an alarm relay coil;
the first end of the first pressure detection switch is connected with the first stage of the power supply, the second end of the first pressure detection switch is connected with the first end of the time delay relay coil, and the second end of the time delay relay coil is connected with the second stage of the power supply;
the first end of the delay relay contact is connected with the first stage of the power supply, the second end of the delay relay contact is connected with the first end of the alarm relay coil, and the second end of the alarm relay coil is connected with the second stage of the power supply;
the time delay relay coil is used for keeping the contact of the time delay relay closed if the disconnection time of the first pressure detection switch is less than the preset time delay time or the first pressure detection switch is not disconnected; and if the turn-off time of the first pressure detection switch is greater than or equal to the preset delay time, controlling the contact of the delay relay to be turned off, so that the coil of the alarm relay is powered off, and triggering an alarm.
2. The system of claim 1, wherein the first pressure detection switch is a 590 kpa total wind pressure detection switch; the 590 kilopascal total wind pressure detection switch is used for switching off when the total wind pressure is detected to be less than or equal to 590 kilopascals.
3. The system of claim 1, further comprising: the first working condition switch, the second working condition switch and the second pressure detection switch;
the first end of the first working condition switch is connected with the first stage of the power supply, and the second end of the first working condition switch is connected with the first end of the first pressure detection switch;
the first end of the second working condition switch is connected with the first stage of the power supply, the second end of the second working condition switch is connected with the first end of the second pressure detection switch, and the second end of the second pressure detection switch is connected with the first end of the time delay relay coil.
4. The system of claim 3, wherein when the first operating condition switch is a normal operation condition switch, the first pressure detection switch is a first total wind pressure detection switch; the first total wind pressure detection switch is used for switching off when the total wind pressure is detected to be less than or equal to a first threshold value;
when the second working condition switch is a rescue working condition switch, the second pressure detection switch is a second total wind pressure detection switch; and the second total wind pressure detection switch is used for switching off when the total wind pressure is detected to be less than or equal to a second threshold value.
5. The system of claim 3, further comprising:
the working condition switch controller is used for acquiring the current working condition; if the current working condition is a first working condition, controlling the first working condition switch to be closed; and if the current working condition is a second working condition, controlling the switch of the second working condition to be closed.
6. The system of claim 1, wherein the alarm relay coil is an emergency brake relay coil; and the emergency braking relay coil is used for triggering emergency braking when power is lost.
7. The system of claim 1, wherein the power source is a 110 volt dc power source.
8. A wind pressure failure determination method applied to the wind pressure failure determination system of claim 1, the method comprising:
the time delay relay coil judges whether the off time of the first pressure detection switch is greater than or equal to the preset time delay time;
if the off time of the first pressure detection switch is less than the preset delay time or the first pressure detection switch is not off, keeping a contact of a delay relay closed;
and if the off time of the first pressure detection switch is greater than or equal to the preset delay time, controlling the contact of the delay relay to be switched off, so that the coil of the alarm relay is powered off, and triggering an alarm.
9. The method according to claim 8, wherein the method is further applied to the wind pressure failure determination system of claim 5, the method further comprising:
the working condition switch controller acquires the current working condition; if the current working condition is a first working condition, controlling a switch of the first working condition to be closed; and if the current working condition is the second working condition, controlling the switch of the second working condition to be closed.
10. A train, characterized by comprising the wind pressure failure judgment system according to any one of claims 1 to 7.
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| CN202010429816.1A CN111413022B (en) | 2020-05-20 | 2020-05-20 | Wind pressure fault judgment system and method and train |
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| CN202010429816.1A CN111413022B (en) | 2020-05-20 | 2020-05-20 | Wind pressure fault judgment system and method and train |
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