Train pipe pressure switch control method and device for locomotive and storage medium

Abstract

The invention discloses a train pipe pressure switch control method and device for a locomotive and a storage medium. The method comprises the following steps that S1, the real-time pressure of a train pipe is obtained; s2, the real-time pressure of the train pipe is compared with a first preset pressure threshold value, and if the real-time pressure of the train pipe is smaller than the first preset pressure threshold value, an alarm instruction is output; s3, after the alarm instruction is received, the real-time speed of the train is obtained; and S4, the real-time speed of the train is compared with a preset speed threshold value, so that the locomotive is controlled to enter a traction blocking state or a loading allowing state. According to the method, whether train traction is blocked or not is jointly determined by train pipe pressure and locomotive speed, the problem of train runaway caused by the fact that the train stops on a large and long ramp for a long time in the braking state and cannot be subjected to traction loading during relieving is solved, and meanwhile mechanical conflicts or potential safety hazards caused by simultaneous action of traction and braking can be prevented; and the running safety of the locomotive is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of braking control for rail transit vehicles, and particularly relates to a control method, device and storage medium for a train pipe pressure switch for a locomotive. Background Art

[0002] In a train system, logic control refers to the automatic management of equipment or systems through preset logic rules (such as conditional judgment, sequential control, interlock protection, etc.) to ensure the coordinated operation of each component and meet the requirements of safety and reliability. The train pressure switch is mainly to meet the need for controlling the maximum pressure reduction of the train pipe, effectively execute braking and relief for the train, and ensure the safety and reliability of train operation;

[0003] Currently, the commonly used logic control of the train pipe pressure switch for a locomotive mainly controls the traction loading and unloading of the locomotive by collecting the train pipe pressure switch signal. For example, when the train pipe pressure is lower than 250 kPa, the train pipe pressure switch action is triggered, and at this time, the locomotive cannot perform traction loading. When the train pipe pressure is greater than or equal to 350 kPa, the locomotive traction is allowed to load;

[0004] The applicant found that when the train is parked for a long time on a long and steep slope in a braking state for loading, due to air leakage in the train pipe system of the vehicle, the train pipe pressure drops, triggering the train pipe pressure switch action, the locomotive microcomputer alarms, and at the same time, the traction is blocked. Since the traction cannot be loaded, it takes a certain time to raise the train pipe pressure above 350 kPa when relieving the train. At this time, the locomotive and the vehicle have started to relieve, and the train on the long and steep slope will run away, affecting the train operation safety. If the train is not relieved, the traction cannot be loaded and the locomotive cannot start. Summary of the Invention

[0005] The purpose of the present invention is to provide a control method, device and storage medium for a train pipe pressure switch for a locomotive, which overcomes the defects of the prior art. The train traction blocking is jointly determined by the train pipe pressure and the locomotive speed, avoiding the problem that the train cannot perform traction loading during relief and runs away when parked for a long time on a long and steep slope in a braking state. At the same time, it can also prevent mechanical conflicts or safety hazards caused by the simultaneous action of traction and braking, and improve the train operation safety of the locomotive.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A control method for a train pipe pressure switch for a locomotive includes the following steps:

[0008] Step S1, obtaining the real-time pressure magnitude of the train pipe;

[0009] Step S2, comparing the real-time pressure of the train pipe with a first preset pressure threshold. If the real-time pressure of the train pipe is less than the first preset pressure threshold, an alarm instruction is output;

[0010] Step S3: after receiving the alarm command, obtain the real-time speed of the train;

[0011] Step S4: compare the real-time speed of the train with the preset speed threshold to control the locomotive to enter a traction blocking state or a loading allowing state.

[0012] In one embodiment, the first preset pressure threshold is 250 KPa.

[0013] In one embodiment, in step S4, controlling the locomotive to enter a traction blocking state or a loading allowing state includes:

[0014] If the real-time speed of the train is not less than the preset speed threshold, a first control instruction is output to control the locomotive to enter a traction blocking state;

[0015] If the real-time speed of the train is less than the preset speed threshold, a second control instruction is output to control the locomotive to enter a loading-permitting state.

[0016] In one embodiment, the preset speed threshold is 5 km / h.

[0017] In one embodiment, in step S2, it also includes:

[0018] The real-time pressure of the train pipe is compared with the second preset pressure threshold. If the real-time pressure of the train pipe is not less than the second preset pressure threshold, the alarm instruction is released and the locomotive enters a state allowing loading.

[0019] In one embodiment, the second preset pressure threshold is 350 KPa.

[0020] The present invention also provides a locomotive train pipe pressure switch control device, comprising:

[0021] The pressure acquisition module is used to collect the train pipe pressure in real time;

[0022] Speed ​​collection module, which is used to collect the speed of the locomotive in real time;

[0023] A control module, which is used to control the traction state of the locomotive according to the magnitude of the train pipe pressure and the speed of the locomotive;

[0024] If the train pipe pressure is less than a first preset pressure threshold and the locomotive speed is not less than a preset speed threshold, the locomotive is put into a traction blocking state;

[0025] If the train pipe pressure is less than the first preset pressure threshold and the speed of the locomotive is less than the preset speed threshold, the locomotive is put into a loading permission state.

[0026] In one embodiment, it further comprises:

[0027] If the train pipe pressure is not less than the second preset pressure threshold, the locomotive is put into the allowed loading state.

[0028] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the train pipe pressure switch control method for a locomotive described above is implemented.

[0029] The beneficial effects of the present invention are as follows:

[0030] In the present invention, whether the train traction is blocked is determined jointly by the train pipe pressure and the locomotive speed, avoiding the problem that the train cannot be traction-loaded when releasing the brake after staying on a long and steep slope for a long time in the braking state, improving the locomotive driving safety. That is, when the train pipe system leaks air and the train pipe pressure drops below 250 Kpa, an alarm command is output indicating that the train pipe pressure is low. At this time, if the locomotive speed is less than 5 km / h, it is allowed to load without waiting for the train pipe pressure to rise before loading, avoiding the train from slipping. If the locomotive speed is not less than 5 km / h at this time, the locomotive is put into the traction blocking state to ensure the safe operation of the train. After the train pipe pressure rises above 350 kPa, it indicates that the train pipe pressure of the vehicle returns to normal, the alarm command is cancelled, and at the same time, there is no need to detect the train speed anymore, and it enters the normal traction allowed loading state. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in more detail below based on embodiments with reference to the drawings. Among them:

[0032] Figure 1 shows the schematic diagram of the logic control flow of the present invention;

[0033] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described below with reference to the drawings.

[0035] Embodiment 1

[0036] The present invention provides a train pipe pressure switch control method for a locomotive, as Figure 1 shown

[0037] including the following steps:

[0038] Step S1: Obtain the real-time pressure of the train pipe;

[0039] Step S2: Compare the real-time pressure of the train pipe with the first preset pressure threshold. If the real-time pressure of the train pipe is less than the first preset pressure threshold, an alarm command is output.

[0040] Step S3: After receiving an alarm instruction, obtain the real-time speed of the train;

[0041] Step S4: Compare the real-time speed of the train with a preset speed threshold to control the locomotive to enter the traction lock state or the allowed loading state, including:

[0042] If the real-time speed of the train is not less than the preset speed threshold, output a first control instruction to control the locomotive to enter the traction lock state;

[0043] If the real-time speed of the train is less than the preset speed threshold, output a second control instruction to control the locomotive to enter the allowed loading state;

[0044] Step S2 further includes: Compare the real-time pressure of the train pipe with a second preset pressure threshold. If the real-time pressure of the train pipe is not less than the second preset pressure threshold, cancel the alarm instruction and make the locomotive enter the allowed loading state;

[0045] Wherein, the first preset pressure threshold is 250 KPa, the second preset pressure threshold is 350 KPa, and the preset speed threshold is 5 Km / h;

[0046] It should be noted that, in this embodiment, whether the train traction is locked is jointly determined by the train pipe pressure and the locomotive speed, so as to avoid the train staying on a long and steep slope for a long time in the braking state, and relieve the problem of train runaway caused by inability to traction and load during relief, improving the locomotive running safety. For example, when the train pipe pressure of the vehicle drops below 250 Kpa due to reasons such as pipe leakage of the pipe system, an alarm instruction is output, indicating that the train pipe pressure is low. At this time, if the locomotive speed is less than 5 km / h, it is considered to be in the parked state and allowed to load, without waiting for the train pipe pressure to rise before loading, avoiding train slipping. If the locomotive speed is not less than 5 km / h at this time, it is considered to be in the running state, and the locomotive is made to enter the traction lock state to prevent mechanical conflicts or safety hazards caused by the simultaneous action of traction and braking, ensuring the safe operation of the train. After the train pipe pressure rises above 350 kPa, it indicates that the train pipe pressure of the vehicle has returned to normal, and the alarm instruction is cancelled. At the same time, there is no need to detect the train speed anymore to enter the normal traction allowed loading state. In this embodiment, there is a pressure difference of 100 kPa between the first preset pressure threshold and the second preset pressure threshold, avoiding the system from repeatedly issuing alarm instructions or cancelling alarm instructions;

[0047] Embodiment 2

[0048] The present invention also provides a train pipe pressure switch control device for a locomotive, including:

[0049] A pressure acquisition module, which is used to collect the magnitude of the train pipe pressure in real time;

[0050] A speed acquisition module, which is used to acquire the speed of the locomotive in real time;

[0051] A control module, which is used to control the traction state of the locomotive according to the magnitude of the train pipe pressure and the speed of the locomotive;

[0052] If the train pipe pressure is less than the first preset pressure threshold and the speed of the locomotive is not less than the preset speed threshold, the locomotive is put into the traction lock state;

[0053] If the train pipe pressure is less than the first preset pressure threshold and the speed of the locomotive is less than the preset speed threshold, the locomotive is put into the allowable loading state;

[0054] If the train pipe pressure is not less than the second preset pressure threshold, the locomotive is put into the allowable loading state;

[0055] It should be noted that, in this embodiment, the control device includes a pressure acquisition module that respectively acquires the magnitude of the train pipe pressure in real time and a speed acquisition module that acquires the speed of the locomotive in real time. That is, when the train pipe pressure drops to the first preset pressure threshold due to reasons such as pipe leakage in the vehicle train pipe, the speed of the locomotive is obtained. If its speed is less than the preset speed threshold, the locomotive is put into the allowable loading state to avoid the problem that the train runs away when it cannot be traction-loaded during relief when it stays on a long and steep slope for a long time. If its speed is not less than the preset speed threshold, the locomotive is put into the traction lock state to prevent mechanical conflicts or safety hazards caused by the simultaneous action of traction and braking, ensuring the safe operation of the train. When measures are taken to make the real-time pressure of the train pipe not less than the second preset pressure threshold, the locomotive is put into the normal allowable loading state, and the second preset pressure threshold is greater than the first preset pressure threshold;

[0056] Embodiment 3

[0057] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the method for controlling the train pipe pressure switch for the locomotive in Embodiment 1;

[0058] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0059] Although the present invention has been described herein with reference to particular embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Accordingly, it should be understood that numerous modifications may be made to the exemplary embodiments, and other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with separate embodiments may be used in other described embodiments.

Claims

1. A control method for the train pipe pressure switch of a locomotive, characterized in that, The steps include: Step S1, obtaining the real-time pressure of the train pipe; Step S2, comparing the real-time pressure of the train pipe with the first preset pressure threshold, and outputting an alarm instruction if the real-time pressure of the train pipe is less than the first preset pressure threshold; Step S3: after receiving the alarm command, obtain the real-time speed of the train; Step S4: compare the real-time speed of the train with the preset speed threshold to control the locomotive to enter a traction blocking state or a loading allowing state.

2. The locomotive train pipe pressure switch control method according to claim 1, characterized in that The first preset pressure threshold is 250 KPa.

3. A locomotive train pipe pressure switch control method according to claim 2, characterized in that, In step S4, controlling the locomotive to enter a traction blocking state or a loading allowing state includes: If the real-time speed of the train is not less than the preset speed threshold, a first control instruction is output to control the locomotive to enter a traction blocking state; If the real-time speed of the train is less than the preset speed threshold, a second control instruction is output to control the locomotive to enter a loading-permitting state.

4. A method for controlling the train pipe pressure switch for a locomotive, as described in claim 1, wherein The preset speed threshold is 5 km / h.

5. A method for controlling the train pipe pressure switch of a locomotive, as claimed in claim 1, wherein In step S2, it also includes: The real-time pressure of the train pipe is compared with the second preset pressure threshold. If the real-time pressure of the train pipe is not less than the second preset pressure threshold, the alarm instruction is released and the locomotive enters a state allowing loading.

6. A control method for a train pipe pressure switch for a locomotive, characterized in that, The second preset pressure threshold is 350 KPa.

7. A control device for the train pipe pressure switch of a locomotive, characterized in that, include: The pressure acquisition module is used to collect the train pipe pressure in real time; Speed ​​collection module, which is used to collect the speed of the locomotive in real time; A control module, which is used to control the traction state of the locomotive according to the magnitude of the train pipe pressure and the speed of the locomotive; If the train pipe pressure is less than a first preset pressure threshold and the locomotive speed is not less than a preset speed threshold, the locomotive is put into a traction blocking state; If the train pipe pressure is less than the first preset pressure threshold and the speed of the locomotive is less than the preset speed threshold, the locomotive is put into a loading permission state.

8. The train pipe pressure switch control device for a locomotive according to claim 7, characterized in that, Also includes: If the train pipe pressure is not less than the second preset pressure threshold, the locomotive enters a loading-permitting state.

9. A computer-readable storage medium, having a computer program stored thereon, characterized in that, When the program is executed by a processor, the locomotive train pipe pressure switch control method according to any one of claims 1 to 6 is implemented.

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