Dynamic Control System for Airtightness of Dual-flow Vehicles

[0022] Example 1

[0023] Dynamic control of dual-flow vehicle air tightness, such as figure 1 Shown: It includes a positioning module, a control module, a controlled damper module, a timing module and an early warning module. The positioning module locates the real-time position of the vehicle, and the positioning module can perform real-time position positioning by sensing the signal of the beacon on the track; the control module obtains Real-time position and send the opening adjustment signal to all controlled damper modules on the vehicle according to the real-time position. The adjustment signal includes the closed signal of the controlled damper module, the opening signal or the opening signal of the preset opening. In Germany, the control module can use the advanced SOC The chip, the controlled air door module includes a fresh air controlled unit and a waste and exhaust air controlled unit. The fresh air controlled unit is installed on the fresh air inlet of the air conditioning unit, and the waste and exhaust air controlled unit is installed on the exhaust air outlet of the air conditioning unit. , the fresh air controlled unit and the waste exhaust controlled unit can use the existing pressure wave valve; when the control module sends the opening adjustment signal, it sends a timing signal to the timing module, the timing module starts the timing according to the timing signal, and the timing module can use the existing timing The chip or timing program performs timing, and the control module obtains the timing duration of the timing module, and judges whether the adjustment of the controlled air door module on each carriage has reached the preset opening according to the timing duration, such as the duration of the fresh air controlled unit from fully open to fully closed. 4s, the exhaust air controlled unit takes 7s from fully open to fully closed. When the controlled damper module does not reach the preset opening, the control module determines whether the actual opening is less than the preset opening. When the actual opening is less than the preset opening When opening, the control module sends a reciprocating adjustment signal to the controlled air door module, and the reciprocating adjustment is to make the controlled air door module rotate back and forth.

[0024] The control module controls the fresh air controlled unit and the waste and exhaust air controlled unit to be at the same initial opening degree, for example, controls the fresh air controlled unit and the waste and exhaust air controlled unit to be fully opened at the same time.

[0025] The control module obtains the voltage feedback signal of the controlled damper module, for example, the fresh air controlled unit feeds back 8.5V voltage when it is fully opened, 6V voltage when it is 2/3 opening, 3V voltage when it is 1/3 opening, and feedback when it is fully closed 0V voltage, the exhaust ventilation controlled unit feedbacks 6V voltage when fully open, 4V voltage when 2/3 opening, 2V voltage when 1/3 opening, and 0V voltage when fully closed, the control module feedbacks the signal according to the voltage and the initial opening to judge whether the opening state of the controlled damper module is accurate. For example, the voltage feedback signal of the fresh air controlled unit is 8.5V, and the timing time indicating the opening state is less than 4s, then the opening state is inaccurate. When the status is inaccurate, the control module sends an early warning signal to the early warning module for early warning prompts. The early warning module can give early warning prompts through voice. The opening of the controlled damper module can be set according to actual needs. settings to adjust.

[0026] The specific implementation process is as follows:

[0027] During the driving process of the dual-flow vehicle, the real-time position of the vehicle is obtained through the positioning module, and the control module sends the opening adjustment signal to all the controlled damper modules on the vehicle according to the real-time position. For example, the real-time position indicates that the vehicle is driving on a normal road. The adjustment signal is to open the fresh air controlled unit and the waste and exhaust air controlled unit, that is, to control the fresh air controlled unit and the waste and exhaust air controlled unit to open at the same opening degree, for example, let the fresh air controlled unit and the waste and exhaust air controlled unit fully open. Open; when the control module sends an opening adjustment signal and a timing signal is sent to the timing module to let the timing module start timing, and the timing time is used to determine whether the adjustment of the controlled damper module on each compartment has reached the preset opening; when adjusting the controlled damper During the module process, the control module obtains the voltage feedback signal of the controlled damper module, and judges whether the opening state is accurate according to the voltage feedback signal and the initial opening. If the voltage is less than 8.5v or 6v, the preset opening is fully open. If it is not accurate, the control module controls the early warning module to give an early warning prompt.

[0028] The airtightness in the present invention refers to maintaining a predetermined air pressure intensity in the vehicle cabin.

[0029] In the first embodiment, the adjustment result of the controlled air door module can be found in time, and the air pressure in the compartment can be adjusted automatically and dynamically through the controlled air door module, so as to reduce the variation of air pressure when the vehicle is running in two different environments, and prevent the air pressure in the compartment The change in air pressure is too great to cause discomfort to the passengers.

[0030] Embodiment 2

[0031]The difference from Embodiment 1 is that the control module matches the real-time position with the preset position. When the real-time position is the same as the preset position, the control module sends an opening adjustment signal to all the controlled damper modules on the vehicle. When the preset positions are not the same, the control module obtains the real-time vehicle speed and compares it with the preset vehicle speed. The real-time vehicle speed can be obtained directly from the vehicle's control system. When the real-time vehicle speed is greater than the preset vehicle speed, the control module will report to all the controlled damper modules on the vehicle. Send the opening adjustment signal; when the real-time vehicle speed is greater than the preset vehicle speed, the control module obtains the timing duration of the timing module for judgment, and when the timing duration is greater than the threshold, the control module stores the real-time position where the real-time vehicle speed is greater than the preset vehicle speed as the supplementary adjustment position, When the timing duration is less than the threshold, the control module stores the real-time position where the real-time vehicle speed is less than the preset vehicle speed as the stop adjustment position, that is, it judges the driving time when the real-time vehicle speed is greater than the preset vehicle speed and records the position where the driving time is longer; the control module When the real-time vehicle speed is greater than the preset vehicle speed, the real-time position is obtained and matched with the supplementary adjustment position and the stop adjustment position, and the control module sends an opening adjustment signal to all the controlled damper modules on the vehicle when the real-time position is the supplementary adjustment position.

[0032] Since the air flow outside the vehicle changes rapidly and the amount of change is large when the vehicle speed is high, if the real-time speed of the road section is not recorded, it is easy to cause abnormal air pressure in the vehicle. The second embodiment judges the duration of the real-time vehicle speed greater than the preset vehicle speed, records the supplementary adjustment position when the duration is longer, records the stop adjustment position when the duration is shorter, and directly performs matching when the real-time vehicle speed is detected to be greater than the preset vehicle speed, When the real-time position does not need to send the opening adjustment signal, such as in places other than the tunnel, the real-time vehicle speed is judged, and the opening adjustment signal is also sent when the real-time vehicle speed is high to ensure the comfort of the air pressure in the car and let the controlled air door module. The adjustment is more accurate, and it also avoids the adjustment on a shorter path causing too frequent adjustment.

[0033] Embodiment 3

[0034] The difference from the second embodiment is that the control module calculates the spacing value between the real-time position and the supplementary adjustment position, the real-time position and the supplementary adjustment position can be represented by coordinate values, and the calculation of the spacing value can be performed according to the coordinate value, and the control module judges the spacing. Whether the value is smaller than the preset distance, when the distance value is smaller than the preset distance, the control module calculates the acceleration value according to the real-time vehicle speed obtained successively, and subtracts the real-time speed obtained earlier from the real-time vehicle speed obtained later to obtain the acceleration value. The acceleration value sends the opening adjustment signal to the controlled air door module on the vehicle in the direction from the front to the rear of the vehicle. For example, the control module sends the corresponding opening adjustment signal according to the position where the acceleration value is within the preset acceleration range.

[0035] Since the acceleration process of the vehicle is carried out gradually and requires a certain period of time, in the present application, before the vehicle is about to reach the acceleration position, the controlled air door modules on the vehicle are controlled in advance according to the acceleration process to adjust in sequence, and the adjustment process is more gentle, It will not generate large noise, and will not allow passengers to sense the corresponding adjustment operations, improving the passenger experience.