Parking brake pipeline and air reservoir charging control method

Abstract

The present invention discloses a parking brake pipeline and an air reservoir inflation control method. The parking brake pipeline includes an air compressor, a main vehicle air reservoir, a main vehicle air pressure sensor and a trailer air reservoir, and also includes a vehicle controller, a multi-way switch and a trailer air pressure sensor; the present invention collects the trailer air reservoir air pressure corresponding to the trailer air reservoir through the trailer air pressure sensor, and then collects the main vehicle air reservoir air pressure corresponding to the main vehicle air reservoir through the main vehicle air pressure sensor, and then controls the switch state of the multi-way switch according to the trailer air reservoir air pressure and the main vehicle air reservoir air pressure through the vehicle controller, and inflates the trailer air reservoir through the air compressor according to the switch state. The present invention controls the switch state of the multi-way switch according to the main vehicle air reservoir air pressure and the trailer air reservoir air pressure, and inflates the trailer air reservoir through the air compressor according to the switch state, taking into account the difference between the main vehicle and the trailer, and inflates the trailer air reservoir in time before the trailer is dragged to prevent the trailer from wearing out.

Description

Technical Field

[0001] The present invention relates to the technical field of trailers, and in particular to a parking brake pipeline and an air reservoir inflation control method. Background Art

[0002] Currently, the main vehicle and trailer are almost always manufactured by different manufacturers. Different main vehicles and trailers are used in conjunction with each other. Because the trailer's air pressure is lower than the main vehicle's, and its air tightness is generally worse than the main vehicle's, coupled with the trailer's high air consumption, it is easy for the trailer's air pressure to drop rapidly during the trailer's braking process without enough time to refill it. This can cause intermittent trailer wear, which is difficult for the driver to detect. Over time, the trailer's friction plates and tires will wear out unnoticed, shortening their lifespan. In severe cases, this can lead to overheating of the trailer's wheel hub, resulting in tire fires and explosions. Therefore, how to promptly inflate the trailer's air reservoir before the trailer brakes to prevent trailer wear has become an urgent issue.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a parking brake pipeline and an air reservoir inflation control method, aiming to solve the technical problem of how to inflate the trailer air reservoir in time before the trailer is towed to prevent the trailer from wearing out.

[0005] To achieve the above-mentioned object, the present invention provides a parking brake pipeline, comprising: an air compressor, a main vehicle air reservoir, a main vehicle air pressure sensor and a trailer air reservoir, the parking brake pipeline also comprising: a vehicle controller, a multi-way switch and a trailer air pressure sensor;

[0006] The multi-way switch is respectively connected to the vehicle controller, the main vehicle air tank and the trailer air tank;

[0007] The trailer air pressure sensor is used to collect the trailer air tank air pressure corresponding to the trailer air tank;

[0008] The main vehicle air pressure sensor is used to collect the main vehicle air tank pressure corresponding to the main vehicle air tank;

[0009] The vehicle controller is used to control the switch state of the multi-way switch according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and to inflate the trailer air tank through the air compressor according to the switch state.

[0010] Optionally, the vehicle controller is further configured to determine whether the trailer air tank needs to be inflated based on the air pressure of the trailer air tank and the air pressure of the main vehicle air tank;

[0011] The vehicle controller is also used to control the opening of the channel between the multi-way switch and the trailer air cylinder when the trailer air cylinder needs to be inflated, so as to inflate the trailer air cylinder through the air compressor.

[0012] Optionally, the vehicle controller is further configured to obtain a pressure drop rate of the trailer air tank within a preset time period;

[0013] The vehicle controller is further configured to determine that the trailer air tank needs to be inflated when the air pressure drop speed is greater than a preset speed, the air pressure in the trailer air tank is lower than a preset minimum air pressure, and the air pressure in the main vehicle air tank is greater than a preset maximum air pressure.

[0014] Optionally, the main vehicle air reservoir includes: at least one air reservoir;

[0015] The main vehicle air pressure sensor is further used to collect the main vehicle air tank air pressure set corresponding to the at least one air tank;

[0016] The vehicle controller is further configured to obtain the maximum air pressure in the air reservoir pressure set of the main vehicle;

[0017] The vehicle controller is further configured to determine that the trailer air tank needs to be inflated when the air pressure drop speed is greater than a preset speed, the air pressure of the trailer air tank is lower than a preset minimum air pressure, and the maximum air pressure is greater than a preset maximum air pressure.

[0018] Optionally, the vehicle controller is further configured to determine whether the main vehicle air tank needs to be inflated based on the air pressure of the main vehicle air tank;

[0019] The vehicle controller is also used to control the opening of the channel between the multi-way switch and the main vehicle air cylinder when the main vehicle air cylinder needs to be inflated, so as to inflate the main vehicle air cylinder through the air compressor.

[0020] Optionally, the vehicle controller is further configured to determine that a target main vehicle air reservoir corresponding to the target main vehicle air reservoir pressure needs to be inflated when the air pressure of the target main vehicle air reservoir in the main vehicle air reservoir pressure set is lower than a preset air pressure;

[0021] The vehicle controller is further configured to control the opening of a channel between the multi-way switch and the target vehicle air tank when the target vehicle air tank needs to be inflated, so as to inflate the target vehicle air tank through the air compressor.

[0022] Optionally, the vehicle controller is further configured to obtain the current air pressure of the main vehicle air tank at the current moment when the main vehicle air tank is inflated by the air compressor;

[0023] The vehicle controller is further configured to control the passage between the multi-way switch and the main vehicle air reservoir to switch from open to closed when the current air pressure of the main vehicle air reservoir is within a preset main vehicle air pressure range;

[0024] Alternatively, the vehicle controller is further configured to obtain the current air pressure of the trailer air tank at the current moment when the trailer air tank is inflated by the air compressor;

[0025] The vehicle controller is further configured to control the passage between the multi-way switch and the trailer air tank to switch from open to closed when the current air pressure of the trailer air tank is within a preset trailer air pressure range.

[0026] In addition, to achieve the above-mentioned object, the present invention further provides an air reservoir charging control method, the air reservoir charging control method being applied to the parking brake line as described above, and the trailer charging control method comprising the following steps:

[0027] The trailer air pressure sensor collects the trailer air tank air pressure corresponding to the trailer air tank;

[0028] The main vehicle air pressure sensor collects the main vehicle air tank air pressure corresponding to the main vehicle air tank;

[0029] The vehicle controller controls the switch state of the multi-way switch according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and inflates the trailer air tank through the air compressor according to the switch state.

[0030] Optionally, the vehicle controller controls the switch state of the multi-way switch according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and inflates the main vehicle air tank or the trailer air tank through the air compressor according to the switch state, specifically comprising:

[0031] The vehicle controller determines whether the trailer air tank needs to be inflated according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank;

[0032] When the trailer air cylinder needs to be inflated, the vehicle controller controls the channel between the multi-way switch and the trailer air cylinder to open, so as to inflate the trailer air cylinder through the air compressor.

[0033] Optionally, the vehicle controller determines whether the trailer air tank needs to be inflated based on the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, specifically comprising:

[0034] The vehicle controller obtains the air pressure drop rate of the trailer air tank within a preset time period;

[0035] The vehicle controller determines that the trailer air tank needs to be inflated when the air pressure drop speed is greater than a preset speed, the air pressure of the trailer air tank is lower than a preset minimum air pressure, and the air pressure of the main vehicle air tank is greater than a preset maximum air pressure.

[0036] In the present invention, the parking brake pipeline includes: an air compressor, a main vehicle air tank, a main vehicle air pressure sensor and a trailer air tank, and also includes: a whole vehicle controller, a multi-way switch and a trailer air pressure sensor; the multi-way switch is respectively connected to the whole vehicle controller, the main vehicle air tank and the trailer air tank; the present invention collects the trailer air tank air pressure corresponding to the trailer air tank through the trailer air pressure sensor, and then collects the main vehicle air tank air pressure corresponding to the main vehicle air tank through the main vehicle air pressure sensor, and then controls the switching state of the multi-way switch according to the trailer air tank pressure and the main vehicle air tank pressure through the whole vehicle controller, and inflates the trailer air tank through the air compressor according to the switching state. Compared with the existing method of alerting the driver by only monitoring the overall air pressure of the main vehicle's air tank, the above method of the present invention can jointly control the switching state of the multi-way switch according to the air pressure of the main vehicle's air tank and the air pressure of the trailer's air tank, and inflate the trailer's air tank through the air compressor according to the switching state. It can take into account the difference between the main vehicle and the trailer, and inflate the trailer's air tank in time before the trailer is braked to prevent the trailer from wearing out. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of a first embodiment of a parking brake pipeline according to the present invention;

[0038] Figure 2 This is a structural schematic diagram of a second embodiment of the parking brake pipeline of the present invention;

[0039] Figure 3 1 is a flow chart of a first embodiment of a method for controlling the inflation of an air reservoir according to the present invention.

[0040] Description of Figure Numbers:

[0041] Label name Label name 10 air compressor 3 rear axle brake 20 Main vehicle air tank 4 Parking valve 30 Main vehicle air pressure sensor 5 Trailer hand valve 40 Trailer air tank 6 Trailer brake valve 50 Vehicle Controller 7 Red spiral tube 60 Multi-way switch 8 Yellow spiral tube 70 Trailer air pressure sensor 9 meter 201～203 Main vehicle air tank 11 Trailer ABS valve module 1 Air handling units 12 Trailer air chamber 2 Rear axle spring chamber 13 Trailer air chamber

[0042] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Reference Figure 1 , Figure 1 This is a structural diagram of the first embodiment of the parking brake pipeline of the present invention.

[0045] In this embodiment, the parking brake pipeline includes: an air compressor 10, a main vehicle air reservoir 20, a main vehicle air pressure sensor 30 and a trailer air reservoir 40, and also includes: a vehicle controller 50, a multi-way switch 60 and a trailer air pressure sensor 70;

[0046] It should be noted that the air compressor 10 is an air compressor that can inflate the main vehicle air reservoir 30 and the trailer air reservoir 50. The main vehicle air pressure sensor 40 and the trailer air pressure sensor 70 are instruments used to measure the absolute pressure of gas. This embodiment does not impose any specific restrictions on the models of the main vehicle air pressure sensor 40 and the trailer air pressure sensor 70. The vehicle control unit (VCU) is responsible for coordinating the power battery, drive motor, and engine, and is the core component of the vehicle control system.

[0047] In a specific implementation, the parking brake pipeline proposed in the present invention can be applied to the main vehicle and trailer during the parking process, and the trailer's air tank can be inflated in time during this process, and the main vehicle's air tank can also be inflated.

[0048] The multi-way switch 60 is connected to the vehicle controller 20, the main vehicle air tank 30 and the trailer air tank 50 respectively;

[0049] It can be understood that the input end of the vehicle controller 50 can be connected to the output end of the main vehicle air pressure sensor 30 and the output end of the trailer air pressure sensor 70, and the output end of the vehicle controller 50 can be connected to the multi-way switch 60, so that the switching state of the multi-way switch 60 is controlled by the vehicle controller 50, and then the air compressor 10 inflates the main vehicle air cylinder 20 and / or the trailer air cylinder 40 through the multi-way switch 60.

[0050] The trailer air pressure sensor 70 is used to collect the air pressure of the trailer air tank corresponding to the trailer air tank 50;

[0051] It should be understood that the trailer air pressure sensor 70 can collect the trailer air cylinder air pressure corresponding to the trailer air cylinder 50. In this embodiment, there may be multiple trailer air cylinders, and there may also be multiple corresponding trailer air cylinder air pressures. The specific number is related to the model of the trailer, and this embodiment does not impose any specific restrictions on this.

[0052] The main vehicle air pressure sensor 40 is used to collect the main vehicle air tank pressure corresponding to the main vehicle air tank 30;

[0053] It is understandable that the main vehicle air pressure sensor 40 can collect the main vehicle air cylinder air pressure corresponding to the main vehicle air cylinder 30. In this embodiment, there may be multiple main vehicle air cylinders, and there may also be multiple corresponding main vehicle air cylinder air pressures. The specific number is related to the model of the main vehicle, and this embodiment does not impose specific restrictions on this.

[0054] The vehicle controller 20 is used to control the switch state of the multi-way switch 60 according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and to inflate the trailer air tank 50 through the air compressor 10 according to the switch state.

[0055] It should be understood that the vehicle controller 50 can receive the main vehicle air tank pressure output by the main vehicle air pressure sensor 30 and the trailer air tank pressure output by the trailer air pressure sensor 70. The vehicle controller 20 can control the switching state of the multi-way switch 60 according to the trailer air tank pressure and the main vehicle air tank pressure. The multi-way switch 60 can include multiple switching channels, for example: the channel between the multi-way switch 60 and the main vehicle air tank 20, and the channel between the multi-way switch 60 and the trailer air tank. When the channel between the multi-way switch 60 and the main vehicle air tank 20 is open, the main vehicle air tank can be inflated through the channel by the air compressor 10; when the channel between the multi-way switch 60 and the trailer air tank 40 is open, the trailer air tank can be inflated through the channel by the air compressor 10; when the channel is closed, the air cannot be inflated through the closed channel by the air compressor 10.

[0056] In this embodiment, the parking brake pipeline includes: an air compressor, a main vehicle air tank, a main vehicle air pressure sensor and a trailer air tank, and also includes: a whole vehicle controller, a multi-way switch and a trailer air pressure sensor; the multi-way switch is respectively connected to the whole vehicle controller, the main vehicle air tank and the trailer air tank; in this embodiment, the trailer air tank air pressure corresponding to the trailer air tank is collected by the trailer air pressure sensor, and then the main vehicle air tank air pressure corresponding to the main vehicle air tank is collected by the main vehicle air pressure sensor, and then the whole vehicle controller controls the switching state of the multi-way switch according to the trailer air tank pressure and the main vehicle air tank pressure, and inflates the trailer air tank through the air compressor according to the switching state. Compared with the existing method of alerting the driver by only monitoring the overall air pressure of the main vehicle's air tank, the above method of this embodiment can jointly control the switching state of the multi-way switch according to the air pressure of the main vehicle's air tank and the air pressure of the trailer's air tank, and inflate the trailer's air tank through the air compressor according to the switching state. It can take into account the difference between the main vehicle and the trailer, and inflate the trailer's air tank in time before the trailer is braked to prevent the trailer from wearing out.

[0057] Based on the above-mentioned first embodiment, a second embodiment of the parking brake pipe of the present invention is proposed.

[0058] In this embodiment, the vehicle controller 50 is further configured to determine whether the trailer air reservoir 40 needs to be inflated based on the air pressure of the trailer air reservoir and the air pressure of the main vehicle air reservoir;

[0059] It is understandable that the vehicle controller 50 can determine whether the trailer air tank 40 needs to be inflated based on the air pressure of the trailer air tank and the air pressure of the main vehicle air tank. The specific judgment method can be that when the air pressure of the trailer air tank is low, the air used by the trailer is insufficient and the trailer air tank 40 needs to be inflated. It can also be that when the air pressure of the trailer air tank is lower than the air pressure of the main vehicle air tank, the trailer air tank 40 needs to be inflated.

[0060] The vehicle controller 50 is also used to control the opening of the channel between the multi-way switch 60 and the trailer air cylinder 40 when the trailer air cylinder 40 needs to be inflated, so as to inflate the trailer air cylinder 40 through the air compressor 10.

[0061] It should be understood that when the trailer air reservoir 40 needs to be inflated, the passage between the multi-way switch 60 and the trailer air reservoir 40 can be controlled to open, and the passage between the multi-way switch 60 and the main vehicle air reservoir 20 can be closed. At this time, the trailer air reservoir 40 can be inflated separately through the air compressor 10. Since the main vehicle air reservoir has a higher air pressure, it is not necessary to inflate the main vehicle air reservoir 20 through the air compressor 10.

[0062] In a specific implementation, there may be multiple trailer air cylinders 40. If one of the trailer air cylinders needs to be inflated, all the trailer air cylinders may be inflated.

[0063] Furthermore, in order to timely inflate the main vehicle air reservoir, in this embodiment, the vehicle controller 50 is further configured to determine whether the main vehicle air reservoir 20 needs to be inflated based on the air pressure of the main vehicle air reservoir;

[0064] It is understandable that the vehicle controller 50 can also determine whether the main vehicle air tank 20 needs to be inflated based on the air pressure of the main vehicle air tank. The specific judgment method can be that when the air pressure of the main vehicle air tank is low, the main vehicle does not have enough air at this time and the main vehicle air tank 20 needs to be inflated.

[0065] The vehicle controller 50 is also used to control the opening of the channel between the multi-way switch and the main vehicle air cylinder 20 when the main vehicle air cylinder 20 needs to be inflated, so as to inflate the main vehicle air cylinder 20 through the air compressor 10.

[0066] It should be understood that when the main vehicle air reservoir 20 needs to be inflated, the passage between the multi-way switch 60 and the main vehicle air reservoir 20 can be controlled to open, and the passage between the multi-way switch 60 and the trailer air reservoir 40 can be closed. At this time, the main vehicle air reservoir 20 can be inflated separately via the air compressor 10. Since the air pressure in the main vehicle air reservoir is relatively low, the main vehicle air reservoir 20 can be inflated first via the air compressor 10. After the main vehicle air reservoir 20 is inflated, if the trailer air reservoir 40 meets the conditions for inflating, the trailer air reservoir 40 can be inflated via the air compressor 10.

[0067] In a specific implementation, there may be multiple main vehicle air cylinders 20. If one of the main vehicle air cylinders needs to be inflated, the main vehicle air cylinder can be inflated separately; if multiple main vehicle air cylinders need to be inflated, multiple main vehicle air cylinders can be inflated at the same time.

[0068] Furthermore, in order to accurately determine whether the trailer air tank needs to be inflated, in this embodiment, the vehicle controller 50 is further configured to obtain the air pressure drop rate of the trailer air tank within a preset time period;

[0069] It should be noted that the preset time period can be set to 8 seconds, 10 seconds, 11 seconds, etc., and this embodiment does not impose any specific restrictions on this. The preset time period can be within the time period when the air pressure in the trailer air tank begins to drop.

[0070] It is understandable that the air pressure drop rate can be determined by the total amount of air pressure drop in the trailer air tank within the preset time period and the duration of the preset time period. For example, if the total amount of air pressure drop is 15 bar and the preset time period is 10 seconds, the air pressure drop rate is 15 bar / 10s=1.5 bar / s.

[0071] The vehicle controller 50 is further configured to determine that the trailer air tank 40 needs to be inflated when the air pressure drop speed is greater than a preset speed, the air pressure of the trailer air tank is lower than a preset minimum air pressure, and the air pressure of the main vehicle air tank is greater than a preset maximum air pressure.

[0072] It should be understood that the preset speed, preset minimum air pressure, and preset maximum air pressure are all preset values, which can be set according to actual conditions. This embodiment does not impose any specific restrictions on this.

[0073] It is understandable that the preset speed can be set to 2 bar / s, the preset minimum air pressure can be set to 6 bar, the preset maximum air pressure can be set to 8 bar, and can also be set to other values ​​according to the models of the main vehicle and trailer. This embodiment does not impose any specific restrictions on this.

[0074] In a specific implementation, when the air pressure drop speed is greater than the preset speed and the air pressure in the trailer air tank is lower than the preset minimum air pressure and the air pressure in the main vehicle air tank is greater than the preset maximum air pressure, the trailer air tank 40 can be inflated by the air compressor 10.

[0075] Furthermore, in order to accurately determine whether the trailer air tank needs to be inflated when there are multiple main vehicle air tanks, in this embodiment, the main vehicle air tank includes: at least one air tank;

[0076] The main vehicle air pressure sensor 30 is further used to collect the main vehicle air tank air pressure set corresponding to the at least one air tank;

[0077] It is understandable that referring to Figure 2 , Figure 2 This is a structural diagram of the second embodiment of the parking brake pipeline of the present invention. Figure 2 As shown, 3 main vehicle air cylinders and 2 trailer air cylinders are used as an example for explanation. 201, 202, and 203 represent the 3 main vehicle air cylinders, 1 is the air handling unit, 2 is the rear axle spring air chamber, 3 is the rear axle brake, 4 is the parking manual valve, 5 is the trailer manual valve, 6 is the trailer brake valve, 7 is the red spiral tube, 8 is the yellow spiral tube, 9 is the instrument, 11 is the trailer ABS valve module, 12 is the trailer air chamber, and 13 is the trailer air chamber.

[0078] It should be understood that the main vehicle air pressure sensor 30 can respectively collect the main vehicle air tank pressures corresponding to the main vehicle air tanks 201, 202, and 2033 to form a main vehicle air tank pressure set. Furthermore, the air pressure of each main vehicle air tank in the main vehicle air tank pressure set can be converted into message data, transmitted to the vehicle controller 50, and displayed on the instrument panel 9.

[0079] The vehicle controller 50 is further configured to obtain the maximum air pressure in the air tank pressure set of the main vehicle;

[0080] It is understandable that after obtaining the main vehicle air tank pressure set, the vehicle controller 50 can determine the maximum air pressure in the main vehicle air tank pressure set and determine the target main vehicle air tank corresponding to the maximum air pressure.

[0081] The vehicle controller 50 is further configured to determine that the trailer air tank 40 needs to be inflated when the air pressure drop speed is greater than a preset speed, the air pressure of the trailer air tank is lower than a preset minimum pressure, and the maximum air pressure is greater than a preset maximum pressure.

[0082] It should be understood that the preset speed, preset minimum pressure, and preset maximum pressure can be set to the same values ​​as above. When the pressure drop rate is greater than the preset speed and the trailer air tank pressure is lower than the preset minimum pressure and the maximum pressure is greater than the preset maximum pressure, the trailer air tank 40 can be inflated separately by the air compressor 10.

[0083] Furthermore, in order to accurately determine the object that needs to be inflated when there are multiple main vehicle air reservoirs, in this embodiment, the vehicle controller 50 is further configured to determine that the target main vehicle air reservoir corresponding to the target main vehicle air reservoir pressure needs to be inflated when the air pressure of the target main vehicle air reservoir in the main vehicle air reservoir pressure set is lower than a preset air pressure;

[0084] It is understandable that the preset air pressure is the preset minimum air pressure at which the main vehicle air tank can work normally, and the specific value is not specifically limited in this embodiment.

[0085] In a specific implementation, when there is a value lower than the preset pressure in the main vehicle air tank pressure set, this value is used as the target main vehicle air tank pressure, and the target main vehicle air tank corresponding to the target main vehicle air tank pressure needs to be inflated, while other main vehicle air tanks do not need to be inflated. For example: Figure 2 The air pressure of the main vehicle air cylinder 201 corresponding to the main vehicle air cylinder is lower than the preset air pressure, and the air pressure of the main vehicle air cylinder 202 and the main vehicle air cylinder 203 corresponding to the main vehicle air cylinder is higher than the preset air pressure. At this time, the main vehicle air cylinder 201 needs to be inflated, and the main vehicle air cylinder 202 and the main vehicle air cylinder 203 do not need to be inflated.

[0086] The vehicle controller 50 is further configured to control the opening of the channel between the multi-way switch 60 and the target vehicle air tank when the target vehicle air tank needs to be inflated, so as to inflate the target vehicle air tank through the air compressor 10 .

[0087] It should be understood that when the target vehicle air tank needs to be inflated, the channel between the multi-way switch 60 and the target vehicle air tank can be controlled to open, and the channel between the multi-way switch 60 and the trailer air tank 40 can be closed, and the channels between the multi-way switch 60 and the remaining vehicle air tanks can also be closed. At this time, the target vehicle air tank can be inflated separately through the air compressor 10. For example: Figure 2 The target main vehicle air tanks are 201 and 202, and when inflation is required, the channel between the multi-way switch 60 and the main vehicle air tanks 201 and 202 can be controlled to open, the channel between the multi-way switch 60 and the main vehicle air tank 203 can be closed, and the channel between the multi-way switch 60 and the trailer air tank 40 can also be closed.

[0088] Furthermore, in this embodiment, the vehicle controller 50 is further configured to obtain the current air pressure of the main vehicle air tank at the current moment when the main vehicle air tank 20 is inflated by the air compressor 10;

[0089] It is understandable that when the main vehicle air tank 20 is inflated by the air compressor 10 , the current main vehicle air tank air pressure corresponding to the main vehicle air tank 20 can be obtained in real time.

[0090] The vehicle controller 50 is further configured to control the passage between the multi-way switch 60 and the main vehicle air reservoir 20 to switch from open to closed when the current main vehicle air reservoir pressure is within a preset main vehicle air pressure range;

[0091] It should be understood that the preset main vehicle air pressure range is the preset air pressure range within which the main vehicle air reservoir can operate normally, which can be specifically determined by the model of the main vehicle, and this embodiment does not impose any specific limitation on this.

[0092] In a specific implementation, when the current main vehicle air reservoir pressure is within a preset main vehicle air pressure range, the passage between the multi-way switch 60 and the main vehicle air reservoir 20 is controlled to switch from open to closed, thereby stopping the air compressor 10 from inflating the main vehicle air reservoir 20. If there are multiple main vehicle air reservoirs and only some of them are inflating, if one of them needs to stop inflating, the passage between the main vehicle air reservoir to be stopped and the multi-way switch 60 can be switched from open to closed, while the passages between the other main vehicle air reservoirs and the trailer air reservoir and the multi-way switch remain unchanged.

[0093] Alternatively, the vehicle controller 50 is further configured to obtain the current air pressure of the trailer air tank at the current moment when the trailer air tank 40 is inflated by the air compressor 10;

[0094] It is understandable that when the trailer air cylinder 40 is inflated by the air compressor 10 , the current trailer air cylinder air pressure corresponding to the trailer air cylinder 40 can be obtained in real time.

[0095] The vehicle controller 50 is further configured to control the passage between the multi-way switch 60 and the trailer air tank 40 to switch from open to closed when the current trailer air tank air pressure is within a preset trailer air pressure range.

[0096] It should be understood that the preset trailer air pressure range is the preset air pressure range within which the trailer air tank can operate normally, which may be specifically determined by the model of the trailer, and this embodiment does not impose any specific limitation on this.

[0097] In a specific implementation, when the current trailer air tank pressure is within the preset main vehicle pressure range, the passage between the multi-way switch 60 and the trailer air tank 40 is controlled to switch from open to closed, so that the air compressor 10 can stop inflating the trailer air tank 40.

[0098] In this embodiment, the vehicle controller determines whether the trailer's air reservoir needs to be inflated based on the air pressure in the trailer's air reservoir and the air pressure in the main vehicle's air reservoir. When the trailer's air reservoir needs to be inflated, the multi-way switch controls the passageway between the trailer's air reservoir and the main vehicle's air reservoir to open, allowing the air compressor to inflate the trailer's air reservoir. This embodiment can control the on / off state of the multi-way switch based on both the main vehicle's and trailer's air reservoir pressures, thereby controlling the on / off state of the passageway between the multi-way switch and the trailer's air reservoir. This allows for the differences between the main vehicle and trailer, and allows for timely inflating of the trailer's air reservoir before the trailer brakes are applied, preventing the trailer from wearing out.

[0099] In addition, the present invention also proposes a gas reservoir charging control method, which is applied to the parking brake pipeline as described above, referring to Figure 3 , Figure 3This is a flow chart of a first embodiment of the air reservoir inflation control method of the present invention. The trailer inflation control method includes the following steps:

[0100] Step S10: The trailer air pressure sensor 70 collects the trailer air tank air pressure corresponding to the trailer air tank 50;

[0101] It should be understood that the trailer air pressure sensor 70 can collect the trailer air cylinder air pressure corresponding to the trailer air cylinder 50. In this embodiment, there may be multiple trailer air cylinders, and there may also be multiple corresponding trailer air cylinder air pressures. The specific number is related to the model of the trailer, and this embodiment does not impose any specific restrictions on this.

[0102] Step S20: the main vehicle air pressure sensor 40 collects the main vehicle air tank air pressure corresponding to the main vehicle air tank 30;

[0103] It is understandable that the main vehicle air pressure sensor 40 can collect the main vehicle air cylinder air pressure corresponding to the main vehicle air cylinder 30. In this embodiment, there may be multiple main vehicle air cylinders, and there may also be multiple corresponding main vehicle air cylinder air pressures. The specific number is related to the model of the main vehicle, and this embodiment does not impose specific restrictions on this.

[0104] Step S30: the vehicle controller 50 controls the switch state of the multi-way switch 60 according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and inflates the trailer air tank 50 through the air compressor 10 according to the switch state.

[0105] It should be understood that the vehicle controller 50 can receive the main vehicle air tank pressure output by the main vehicle air pressure sensor 30 and the trailer air tank pressure output by the trailer air pressure sensor 70. The vehicle controller 20 can control the switching state of the multi-way switch 60 according to the trailer air tank pressure and the main vehicle air tank pressure. The multi-way switch 60 can include multiple switching channels, for example: the channel between the multi-way switch 60 and the main vehicle air tank 20, and the channel between the multi-way switch 60 and the trailer air tank. When the channel between the multi-way switch 60 and the main vehicle air tank 20 is open, the main vehicle air tank can be inflated through the channel by the air compressor 10; when the channel between the multi-way switch 60 and the trailer air tank 40 is open, the trailer air tank can be inflated through the channel by the air compressor 10; when the channel is closed, the air cannot be inflated through the closed channel by the air compressor 10.

[0106] Furthermore, in this embodiment, the step S30 includes: the vehicle controller 50 determines whether the trailer air cylinder 40 needs to be inflated based on the air pressure of the trailer air cylinder and the air pressure of the main vehicle air cylinder; when the trailer air cylinder 40 needs to be inflated, the vehicle controller 50 controls the channel between the multi-way switch 60 and the trailer air cylinder 40 to open, so as to inflate the trailer air cylinder 40 through the air compressor 10.

[0107] It is understandable that the vehicle controller 50 can determine whether the trailer air tank 40 needs to be inflated based on the air pressure of the trailer air tank and the air pressure of the main vehicle air tank. The specific judgment method can be that when the air pressure of the trailer air tank is low, the air used by the trailer is insufficient and the trailer air tank 40 needs to be inflated. It can also be that when the air pressure of the trailer air tank is lower than the air pressure of the main vehicle air tank, the trailer air tank 40 needs to be inflated.

[0108] It should be understood that when the trailer air reservoir 40 needs to be inflated, the passage between the multi-way switch 60 and the trailer air reservoir 40 can be controlled to open, and the passage between the multi-way switch 60 and the main vehicle air reservoir 20 can be closed. At this time, the trailer air reservoir 40 can be inflated separately through the air compressor 10. Since the main vehicle air reservoir has a higher air pressure, it is not necessary to inflate the main vehicle air reservoir 20 through the air compressor 10.

[0109] In a specific implementation, there may be multiple trailer air cylinders 40. If one of the trailer air cylinders needs to be inflated, all the trailer air cylinders may be inflated.

[0110] Furthermore, in this embodiment, the vehicle controller 50 determines whether the trailer air tank 40 needs to be inflated based on the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, specifically including: the vehicle controller 50 obtains the air pressure drop rate of the trailer air tank within a preset time period; the vehicle controller 50 determines that the trailer air tank 40 needs to be inflated when the air pressure drop rate is greater than the preset speed and the air pressure of the trailer air tank is lower than the preset minimum pressure and the air pressure of the main vehicle air tank is greater than the preset maximum pressure.

[0111] It should be noted that the preset time period can be set to 8 seconds, 10 seconds, 11 seconds, etc., and this embodiment does not impose any specific restrictions on this. The preset time period can be within the time period when the air pressure in the trailer air tank begins to drop.

[0112] It is understandable that the air pressure drop rate can be determined by the total amount of air pressure drop in the trailer air tank within the preset time period and the duration of the preset time period. For example, if the total amount of air pressure drop is 15 bar and the preset time period is 10 seconds, the air pressure drop rate is 15 bar / 10s=1.5 bar / s.

[0113] It should be understood that the preset speed, preset minimum air pressure, and preset maximum air pressure are all preset values, which can be set according to actual conditions. This embodiment does not impose any specific restrictions on this.

[0114] It is understandable that the preset speed can be set to 2 bar / s, the preset minimum air pressure can be set to 6 bar, the preset maximum air pressure can be set to 8 bar, and can also be set to other values ​​according to the models of the main vehicle and trailer. This embodiment does not impose any specific restrictions on this.

[0115] In a specific implementation, when the air pressure drop speed is greater than the preset speed and the air pressure in the trailer air tank is lower than the preset minimum air pressure and the air pressure in the main vehicle air tank is greater than the preset maximum air pressure, the trailer air tank 40 can be inflated by the air compressor 10.

[0116] In this embodiment, the trailer air pressure sensor collects the corresponding trailer air pressure. The main vehicle air pressure sensor then collects the corresponding main vehicle air pressure. The vehicle controller then controls the on / off state of a multi-way switch based on the trailer air pressure and the main vehicle air pressure. The air compressor inflates the trailer air tank based on this state. Compared to existing systems that only monitor the overall air pressure of the main vehicle air tank to alert the driver, this embodiment controls the on / off state of the multi-way switch based on both the main vehicle air pressure and the trailer air pressure. The air compressor inflates the trailer air tank based on this state. This allows for the difference between the main vehicle and trailer, and allows the trailer air tank to be inflated promptly before the trailer brakes are applied, preventing the trailer from wearing out.

[0117] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0118] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0119] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0120] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A parking brake pipeline, comprising: An air compressor, a main vehicle air reservoir, a main vehicle air pressure sensor and a trailer air reservoir, wherein the parking brake pipeline further comprises: a vehicle controller, a multi-way switch and a trailer air pressure sensor; The multi-way switch is respectively connected to the vehicle controller, the main vehicle air tank and the trailer air tank; The trailer air pressure sensor is used to collect the trailer air tank air pressure corresponding to the trailer air tank; The main vehicle air pressure sensor is used to collect the main vehicle air tank air pressure corresponding to the main vehicle air tank; The vehicle controller is also used to obtain the air pressure drop rate of the trailer air tank within a preset time period; The vehicle controller is further used to determine that the trailer air tank needs to be inflated when the air pressure drop speed is greater than a preset speed and the air pressure of the trailer air tank is lower than a preset minimum air pressure and the air pressure of the main vehicle air tank is greater than a preset maximum air pressure; The vehicle controller is also used to control the opening of the channel between the multi-way switch and the trailer air cylinder when the trailer air cylinder needs to be inflated, so as to inflate the trailer air cylinder through the air compressor.

2. The parking brake pipeline according to claim 1, characterized in that: The main vehicle air reservoir comprises: at least one air reservoir; The main vehicle air pressure sensor is further used to collect the main vehicle air tank air pressure set corresponding to the at least one air tank; The vehicle controller is further used to obtain the maximum air pressure in the air pressure set of the main vehicle air tank; The vehicle controller is also used to determine that the trailer air tank needs to be inflated when the air pressure drop speed is greater than a preset speed and the air pressure of the trailer air tank is lower than a preset minimum air pressure and the maximum air pressure is greater than a preset maximum air pressure.

3. The parking brake pipeline according to claim 1, characterized in that: The vehicle controller is also used to determine whether the main vehicle air tank needs to be inflated according to the air pressure of the main vehicle air tank; The vehicle controller is also used to control the opening of the channel between the multi-way switch and the main vehicle air cylinder when the main vehicle air cylinder needs to be inflated, so as to inflate the main vehicle air cylinder through the air compressor.

4. The parking brake pipeline according to claim 2, characterized in that: The vehicle controller is further configured to determine that a target main vehicle air reservoir corresponding to the target main vehicle air reservoir pressure needs to be inflated when the air pressure of the target main vehicle air reservoir in the main vehicle air reservoir pressure set is lower than a preset air pressure; The vehicle controller is also used to control the opening of the channel between the multi-way switch and the target vehicle air tank when the target vehicle air tank needs to be inflated, so as to inflate the target vehicle air tank through the air compressor.

5. The parking brake pipeline according to claim 4, characterized in that: The vehicle controller is further used to obtain the current air pressure of the main vehicle air tank at the current moment when the main vehicle air tank is inflated by the air compressor; The vehicle controller is further used to control the passage between the multi-way switch and the main vehicle air tank to switch from open to closed when the current air pressure of the main vehicle air tank is within a preset main vehicle air pressure range; Or, the vehicle controller is further used to obtain the current air pressure of the trailer air tank at the current moment when the trailer air tank is inflated by the air compressor; The vehicle controller is also used to control the passage between the multi-way switch and the trailer air tank to switch from open to closed when the current air pressure of the trailer air tank is within a preset trailer air pressure range.

6. A method for controlling the inflation of an air cylinder, characterized in that: The air reservoir charging control method is applied to the parking brake pipeline according to any one of claims 1 to 5, and the air reservoir charging control method comprises the following steps: The trailer air pressure sensor collects the trailer air tank air pressure corresponding to the trailer air tank; The main vehicle air pressure sensor collects the main vehicle air tank air pressure corresponding to the main vehicle air tank; The vehicle controller controls the switch state of the multi-way switch according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and inflates the trailer air tank through the air compressor according to the switch state.

7. The air cylinder charging control method according to claim 6, characterized in that: The vehicle controller controls the switch state of the multi-way switch according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank, and inflates the trailer air tank through the air compressor according to the switch state, specifically comprising: The vehicle controller determines whether the trailer air tank needs to be inflated according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank; When the trailer air cylinder needs to be inflated, the vehicle controller controls the channel between the multi-way switch and the trailer air cylinder to open, so as to inflate the trailer air cylinder through the air compressor.

8. The air cylinder charging control method according to claim 7, characterized in that: The step of the vehicle controller judging whether the trailer air tank needs to be inflated according to the air pressure of the trailer air tank and the air pressure of the main vehicle air tank specifically includes: The vehicle controller obtains the air pressure drop rate of the trailer air tank within a preset time period; The vehicle controller determines that the trailer air tank needs to be inflated when the air pressure drop speed is greater than a preset speed, the air pressure of the trailer air tank is lower than a preset minimum air pressure, and the air pressure of the main vehicle air tank is greater than a preset maximum air pressure.

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