阅读说明：本技术 车载式气泵控制系统及其控制方法 (Vehicle-mounted air pump control system and control method thereof ) 是由 戴晓强 钱金伟 高宏博 吴飞 陆震 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种车载式气泵控制系统,包括：控制器模块、电池模块、外部交流接口、电源切换模块、气泵、高压空气气瓶、压力传感器；控制器模块分别与车载12V电源、电池模块、电源切换模块、压力传感器连接,控制器模块基于压力传感器的信号通过电源切换模块选择给气泵的供电方式；外部交流接口与电源切换模块连接,用于供外部交流电接入；电源切换模块与气泵连接,用于给气泵供电；气泵与高压空气气瓶连接,用于给高压空气气瓶供气；压力传感器与高压空气气瓶连接,用于采集高压空气气瓶中的压力。本发明通用性好,能在车载12V电源供电不足情况下通过外部电源确保设备正常工作,同时在缺乏外部供电设备的情况下,仍然能够充气。(The invention discloses a vehicle-mounted air pump control system, which comprises: the device comprises a controller module, a battery module, an external alternating current interface, a power supply switching module, an air pump, a high-pressure air bottle and a pressure sensor; the controller module is respectively connected with the vehicle-mounted 12V power supply, the battery module, the power supply switching module and the pressure sensor, and selects a power supply mode for the air pump through the power supply switching module based on a signal of the pressure sensor; the external alternating current interface is connected with the power supply switching module and is used for accessing external alternating current; the power supply switching module is connected with the air pump and used for supplying power to the air pump; the air pump is connected with the high-pressure air cylinder and used for supplying air to the high-pressure air cylinder; the pressure sensor is connected with the high-pressure air cylinder and used for collecting the pressure in the high-pressure air cylinder. The invention has good universality, can ensure the normal work of the equipment through the external power supply under the condition of insufficient power supply of the vehicle-mounted 12V power supply, and can still charge air under the condition of lacking the external power supply equipment.)

1. A vehicle-mounted air pump control system, comprising: the device comprises a controller module, a battery module, an external alternating current interface, a power supply switching module, an air pump, a high-pressure air bottle and a pressure sensor; the controller module is respectively connected with the vehicle-mounted 12V power supply, the battery module, the power supply switching module and the pressure sensor, and selects a power supply mode for the air pump through the power supply switching module based on a signal of the pressure sensor; the external alternating current interface is connected with the power supply switching module and is used for accessing external alternating current; the power supply switching module is connected with the air pump and used for supplying power to the air pump; the air pump is connected with the high-pressure air cylinder and used for supplying air to the high-pressure air cylinder; the pressure sensor is connected with the high-pressure air cylinder and used for collecting the pressure in the high-pressure air cylinder.

2. The vehicle-mounted air pump control system of claim 1, wherein the controller module comprises: the device comprises a charger, a control unit, an electric quantity detection unit and an inverter unit; the charger is respectively connected with a vehicle-mounted 12V power supply, a control unit and a battery module, and the vehicle-mounted 12V power supply supplies power to the control unit and the battery module through the charger; the electric quantity detection unit is respectively connected with the battery module and the control unit and is used for detecting the residual electric quantity of the battery module; the inverter unit is respectively connected with the control unit, the battery module and the power supply switching module, and the inverter unit carries out inversion processing on the power supply output by the battery module based on the control signal of the control unit.

3. The vehicle-mounted air pump control system of claim 1 or 2, wherein the controller module further comprises: a vehicle state acquisition unit; the vehicle state acquisition unit is connected with the control unit and provides a vehicle state for the control unit, and the control unit selects a power supply inflation mode based on the acquired vehicle state.

4. The vehicle-mounted air pump control system of claim 3, wherein the controller module further comprises: an alarm unit; the alarm unit is connected with the control unit and alarms based on the control signal of the control unit.

5. A vehicle-mounted air pump control method is characterized by comprising a control method when a vehicle runs and a control method when the vehicle stops;

the control method during the running of the vehicle comprises the following steps:

acquiring the residual electric quantity of the battery module, and acquiring a pressure value in the high-pressure air cylinder;

when the residual electric quantity of the battery module is in a preset low-electric-quantity state, the control unit controls the inverter unit to stop working, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module;

when the pressure value in the high-pressure air cylinder is in a preset low-pressure state, the control unit controls the inverter unit to start to work and controls the power supply switching module to switch the power supply mode to the battery power supply mode;

when the pressure value in the high-pressure air cylinder is in a preset high-pressure state, the control unit controls the inverter unit to stop working, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module;

the control method when the vehicle is stopped includes:

acquiring the pressure value in the high-pressure air cylinder,

when the pressure value in the high-pressure air cylinder is in a preset low-pressure state, acquiring the residual electric quantity of the battery module, and when the residual electric quantity of the battery module is in a preset high-electric-quantity state, controlling the inverter unit to start to work by the control unit and controlling the power supply switching module to switch the power supply mode to the battery power supply mode;

when the residual electric quantity of the battery module is in a preset low-electric-quantity state, the control unit controls the inverter unit to stop working, and controls the power supply switching module to switch the power supply mode to the external power supply mode.

6. The vehicle-mounted air pump control method according to claim 5, wherein the preset low-battery state and the preset full-battery state are set by a method comprising:

dividing the electric quantity of the battery module into a plurality of orders of magnitude from the empty electric quantity to the full electric quantity, wherein the plurality of orders of magnitude from the empty electric quantity are in a preset low electric quantity state, and the rest plurality of orders of magnitude are in a preset full electric quantity state; then, the divided several orders are used as a subset of the membership function to carry out membership function processing; and finally, corresponding the electric quantity value to a preset low electric quantity state and a preset full electric quantity state according to the output result of the membership function.

7. The vehicle-mounted air pump control method according to claim 5 or 6, wherein the preset low pressure state and the preset high pressure state are set by:

dividing the gas volume of a high-pressure gas cylinder into a plurality of magnitude levels from the air volume to the full gas volume, wherein the plurality of magnitude levels from the air volume are in a preset low-pressure value state, and the rest plurality of magnitude levels are in a preset full-pressure value state; then, the divided several orders are used as a subset of the membership function to carry out membership function processing; and finally, corresponding the air quantity value to a preset low-pressure value state and a preset high-pressure value state according to the output result of the membership function.

Technical Field

The invention relates to the technical field of air pump control, in particular to a vehicle-mounted air pump control system and a control method thereof.

Background

Air pumps are used in many occasions on the market at present, but the use of the air pumps on vehicles never appears. In order to make up for the technical gap at present, a vehicle-mounted air pump control system and a control method thereof are provided, and various air bags are inflated through an air pump control system integrated on a trailer, so that the working efficiency of an air pump and a high-pressure air bottle can be improved. Particularly, in the aspect of trailer use, for the trailer using the lifting air bag, the design of a vehicle-mounted air pump control system can be carried out according to the standard of the lifting air bag, and the working efficiency of the trailer can be greatly improved. Meanwhile, the lithium battery pack powered by the air pump can be charged when the vehicle runs through the vehicle-mounted air pump control system, and the pressure of the high-pressure air bottle is dynamically detected, so that the normal working air pressure of the high-pressure air bottle is ensured. By using the air pump control system, the risk of damage to the trailer by the trailer in the operation process of the trailer can be effectively reduced.

Disclosure of Invention

The invention provides a vehicle-mounted air pump control system and a control method thereof, which aim to solve the technical problem that the reasonable control of a trailer-mounted air pump is lacked in the prior art.

The invention provides a vehicle-mounted air pump control system, which comprises: the device comprises a controller module, a battery module, an external alternating current interface, a power supply switching module, an air pump, a high-pressure air bottle and a pressure sensor; the controller module is respectively connected with the vehicle-mounted 12V power supply, the battery module, the power supply switching module and the pressure sensor, and selects a power supply mode for the air pump through the power supply switching module based on a signal of the pressure sensor; the external alternating current interface is connected with the power supply switching module and is used for accessing external alternating current; the power supply switching module is connected with the air pump and used for supplying power to the air pump; the air pump is connected with the high-pressure air cylinder and used for supplying air to the high-pressure air cylinder; the pressure sensor is connected with the high-pressure air cylinder and used for collecting the pressure in the high-pressure air cylinder.

Further, the controller module includes: the device comprises a charger, a control unit, an electric quantity detection unit and an inverter unit; the charger is respectively connected with a vehicle-mounted 12V power supply, a control unit and a battery module, and the vehicle-mounted 12V power supply supplies power to the control unit and the battery module through the charger; the electric quantity detection unit is respectively connected with the battery module and the control unit and is used for detecting the residual electric quantity of the battery module; the inverter unit is respectively connected with the control unit, the battery module and the power supply switching module, and the inverter unit carries out inversion processing on the power supply output by the battery module based on the control signal of the control unit.

Further, the controller module further comprises: a vehicle state acquisition unit; the vehicle state acquisition unit is connected with the control unit and provides a vehicle state for the control unit, and the control unit selects a power supply inflation mode based on the acquired vehicle state.

Further, the controller module further comprises: an alarm unit; the alarm unit is connected with the control unit and alarms based on the control signal of the control unit.

The invention also provides a vehicle-mounted air pump control method, which comprises a control method when the vehicle runs and a control method when the vehicle stops;

the control method during the running of the vehicle comprises the following steps:

acquiring the residual electric quantity of the battery module, and acquiring a pressure value in the high-pressure air cylinder;

when the residual electric quantity of the battery module is in a preset low-electric-quantity state, the control unit controls the inverter unit to stop working, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module;

when the pressure value in the high-pressure air cylinder is in a preset low-pressure state, the control unit controls the inverter unit to start to work and controls the power supply switching module to switch the power supply mode to the battery power supply mode;

when the pressure value in the high-pressure air cylinder is in a preset high-pressure state, the control unit controls the inverter unit to stop working, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module;

the control method when the vehicle is stopped includes:

acquiring the pressure value in the high-pressure air cylinder,

when the pressure value in the high-pressure air cylinder is in a preset low-pressure state, acquiring the residual electric quantity of the battery module, and when the residual electric quantity of the battery module is in a preset high-electric-quantity state, controlling the inverter unit to start to work by the control unit and controlling the power supply switching module to switch the power supply mode to the battery power supply mode;

when the residual electric quantity of the battery module is in a preset low-electric-quantity state, the control unit controls the inverter unit to stop working, and controls the power supply switching module to switch the power supply mode to the external power supply mode.

Further, when the residual electric quantity of the battery module is in a preset low electric quantity state and the pressure value of the high-pressure gas cylinder is in a preset low-pressure value state, the control unit controls the alarm module to send out an alarm signal, controls the inverter unit to stop working, and starts the charger to enable the vehicle-mounted 12V power supply to charge the battery module until the electric quantity of the battery module reaches a preset high electric quantity state.

Further, the setting method of the preset low power state and the preset full power state is as follows:

dividing the electric quantity of the battery module into a plurality of orders of magnitude from the empty electric quantity to the full electric quantity, wherein the plurality of orders of magnitude from the empty electric quantity are in a preset low electric quantity state, and the rest plurality of orders of magnitude are in a preset full electric quantity state; then, the divided several orders are used as a subset of the membership function to carry out membership function processing; and finally, corresponding the electric quantity value to a preset low electric quantity state and a preset full electric quantity state according to the output result of the membership function.

Further, the setting method of the preset low pressure value state and the preset high pressure value state is as follows:

dividing the gas volume of a high-pressure gas cylinder into a plurality of magnitude levels from the air volume to the full gas volume, wherein the plurality of magnitude levels from the air volume are in a preset low-pressure value state, and the rest plurality of magnitude levels are in a preset full-pressure value state; then, the divided several orders are used as a subset of the membership function to carry out membership function processing; and finally, corresponding the air quantity value to a preset low-pressure value state and a preset high-pressure value state according to the output result of the membership function.

Further, the membership function is a triangular membership function.

The invention has the beneficial effects that:

1. the economy is high, and the cost is low due to the adoption of the equipment such as the electric quantity detection module, the controller module, the inverter module and the pressure sensor.

2. The universality is good, and the normal work of the equipment can be ensured through the external power supply under the condition that the power supply of the vehicle-mounted 12V power supply is insufficient by adopting the external alternating current interface. Meanwhile, the lithium battery pack is adopted for supplying power, so that the preset task can be still completed under the condition of lacking necessary power supply equipment.

3. The portable nature is high, and the controller unit adopts modular structure, and is small, is applicable to the trailer that adopts the jack-up air pocket or other work cars use.

4. The invention reasonably divides the pressure value and the state of the electric quantity value by utilizing the membership function, and can adapt to systems with different electric quantity values and pressure values.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:

FIG. 1 is a schematic diagram of a vehicle mounted air pump control system of the present invention;

FIG. 2 is a diagram illustrating a triangular membership function of battery module power according to an embodiment of the present invention.

FIG. 3 is a graph of a triangular membership function of gas volume of a high pressure gas cylinder in an embodiment of the invention.

FIG. 4 is a fuzzy rule table of the operating status of the inverter under the operating status of the vehicle according to the embodiment of the present invention

FIG. 5 is a fuzzy rule table of the working state of the charger in the operating state of the vehicle according to the embodiment of the present invention

FIG. 6 is a fuzzy rule table of power switching status in the running status of the vehicle according to the embodiment of the present invention

FIG. 7 is a fuzzy rule table of the inverter operation status under the stop status of the vehicle according to the embodiment of the present invention

FIG. 8 is a fuzzy rule table of the working state of the charger in the stopped state of the vehicle according to the embodiment of the present invention

FIG. 9 is a fuzzy rule table of power switching status in a stopped status of an automobile according to an embodiment of the present invention

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a vehicle-mounted air pump control system, including: the system comprises a controller module and a battery module, wherein a lithium battery pack, an external alternating current interface, a power supply switching module, an air pump, a high-pressure air cylinder and a pressure sensor are preferably selected; the controller module includes: the system comprises a charger, a control unit, an electric quantity detection unit, an inverter unit, a vehicle state acquisition unit and an alarm unit; the charger is respectively connected with the vehicle-mounted 12V power supply, the control unit and the battery module, and the vehicle-mounted 12V power supply supplies power to the control unit and the battery module through the charger; the electric quantity detection unit is respectively connected with the battery module and the control unit and is used for detecting the residual electric quantity of the battery module; the inverter unit is respectively connected with the control unit, the battery module and the power supply switching module, and inverts the power supply output by the battery module based on the control signal of the control unit; the vehicle state acquisition unit is connected with the control unit and provides a vehicle state for the control unit, and the control unit selects an inflation mode based on the acquired vehicle state; the alarm unit is connected with the control unit and alarms based on the control signal of the control unit; the external alternating current interface is connected with the power supply switching module and is used for accessing external alternating current; the power supply switching module is connected with the air pump and used for supplying power to the air pump; the air pump is connected with the high-pressure air cylinder and used for supplying air to the high-pressure air cylinder; the pressure sensor is connected with the high-pressure air cylinder and used for collecting the pressure in the high-pressure air cylinder.

The vehicle-mounted air pump control method comprises a control method when a vehicle runs and a control method when the vehicle stops;

the control method during the running of the vehicle comprises the following steps:

acquiring the residual electric quantity of the battery module, and acquiring a pressure value in the high-pressure air cylinder;

when the residual electric quantity of the battery module is in a preset low-electric-quantity state, the control unit controls the inverter unit to stop working, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module;

when the pressure value in the high-pressure air cylinder is in a preset low-pressure state, the control unit controls the inverter unit to start to work and controls the power supply switching module to switch the power supply mode to the battery power supply mode;

when the pressure value in the high-pressure air cylinder is in a preset high-pressure state, the control unit controls the inverter unit to stop working, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module;

the control method when the vehicle is stopped includes:

acquiring the pressure value in the high-pressure air cylinder,

when the pressure value in the high-pressure air cylinder is in a preset low-pressure state, acquiring the residual electric quantity of the battery module, and when the residual electric quantity of the battery module is in a preset high-electric-quantity state, controlling the inverter unit to start to work by the control unit and controlling the power supply switching module to switch the power supply mode to the battery power supply mode;

when the residual electric quantity of the battery module is in a preset low-electric-quantity state, the control unit controls the inverter unit to stop working, the alarm module is controlled to send an alarm signal, the power supply switching module is controlled to switch the power supply mode to an external power supply mode, and the charger is started to enable the vehicle-mounted 12V power supply to charge the battery module until the electric quantity of the battery module reaches a preset high-electric-quantity state.

The setting method of the preset low-power state and the preset full-power state comprises the following steps:

dividing the electric quantity of the battery module into a plurality of orders of magnitude from the empty electric quantity to the full electric quantity, wherein the plurality of orders of magnitude from the empty electric quantity are in a preset low electric quantity state, and the rest plurality of orders of magnitude are in a preset full electric quantity state; then, the divided several orders are used as a subset of the membership function to carry out membership function processing; and finally, corresponding the electric quantity value to a preset low electric quantity state and a preset full electric quantity state according to the output result of the membership function.

The setting method of the preset low pressure value state and the preset high pressure value state comprises the following steps:

dividing the gas volume of a high-pressure gas cylinder into a plurality of magnitude levels from the air volume to the full gas volume, wherein the plurality of magnitude levels from the air volume are in a preset low-pressure value state, and the rest plurality of magnitude levels are in a preset full-pressure value state; then, the divided several orders are used as a subset of the membership function to carry out membership function processing; and finally, corresponding the air quantity value to a preset low-pressure value state and a preset high-pressure value state according to the output result of the membership function.

For example, the charge of the battery module is classified into five orders of magnitude from empty to full charge, very low (VS), low (S), medium (M), high (B), and very high (VB), the very low (VS) and low (S) are defined as a preset low charge state, and the medium (M), high (B), and very high (VB) are defined as a preset full charge state.

The air quantity of the high-pressure air bottle is divided into five orders of magnitude from air quantity to full air quantity, namely very low (VS), low (S), medium (M), high (B) and very high (VB), the very low (VS) and the low (S) are specified to be in a preset low-pressure value state, and the medium (M), the high (B) and the very high (VB) are specified to be in a preset high-pressure value state.

And a triangular membership function is adopted, and the function is convenient to calculate. As shown in fig. 2, five charge levels are taken as a subset of the function, and the argument domain of the charge values is set to {0, 100}, which is a triangular membership function diagram of the charge of the battery module, and it can be seen from the diagram that the preset low charge state is obtained when the charge is less than 38%.

As shown in FIG. 3, five pressure magnitudes are taken as a subset of functions, and meanwhile, the discourse domain of the pressure values is set to {0, 100}, namely, the plot is a triangular membership function diagram of the gas quantity of the high-pressure gas cylinder, and it can be seen from the diagram that the preset low-pressure value state is obtained when the gas quantity is less than 38%.

As shown in fig. 4-9, the present invention is a state rule table for the inverter operating state, the charger operating state, the power switching module state, and the alarm module state according to the vehicle state, the gas amount of the high pressure gas cylinder, and the electric quantity of the battery module. Wherein, inverter operating condition: "NS" indicates "inverter off", and "NR" indicates "inverter on"; the working state of the charger is as follows: "CS" indicates "charger off", and "CR" indicates "charger on"; the power supply switching module state: "D" represents "vehicle-mounted 12V power supply", and "a" represents "external ac interface"; the state of the alarm module is as follows: "B" means "alarm module is active". The control unit controls each device based on the triangular membership function of the electric quantity, the triangular membership function of the air quantity and the rule table.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.