TWI425199B - Automatic control method for inflating air - Google Patents

Description

Automatic control inflation

The invention relates to an automatic control inflation method, in particular to an inflation method which can easily and accurately inflate an inflated body to a pressure set value.

For example, if the tire is inflated, when the tire is under-inflated, the friction between the tire and the ground will increase, which will require more power when the vehicle travels, and will cause great wear and tear on the surface of the tire, reducing its use. life. Therefore, when the tire tire pressure is insufficient, the tire air pressure must be filled by means of an air pump such as a pump or an air compressor, so that the tire does not collapse and facilitate travel.

In general, the air pump is mainly provided with a gas pump, the air pump is connected to one end of the gas pipe, and the other end of the gas pipe is provided with a gas nozzle, and the pressure pipe is connected to the pressure gauge to display the inflation state. When inflating the tire, the gas nozzle of the air pumping device is inserted into the inflation nozzle of the tire, so that the gas pump of the air pumping device pushes the gas of the set pounds into the tire through the air pipe and the air nozzle, when the pressure gauge is connected The pressure sensing element detects that the pressure of the air pump output has reached a predetermined number of pounds, and the air pump stops pumping, avoiding the filling of too much gas and causing a puncture. However, when the air pump stops inflating, the pressure between the tire and the air pump begins to balance. At this time, the pressure sensing element connected to the pressure gauge of the air pumping device detects the balance pressure value, which is often lower than the predetermined pressure pound number, even if the air pumping device is restarted, the instantaneous pressure reaches the pressure. Set value and stop immediately, but not effective Increase the inflation to the pressure setting. Therefore, the current method, after the completion of the pumping work, there will be a certain degree of difference between the tire pressure and the pressure gauge setting.

The reason is that the present inventors have made many of the above-mentioned shortcomings in view of the existing insufflation methods, and by virtue of their years of manufacturing, design experience and knowledge in related fields, and through various ingenuity and experiments, finally developed the automatic control inflation method of the present invention. In order to greatly improve the general air pumping device, the inflation cannot achieve the disadvantage of the pressure setting value.

The invention is an automatic control inflation method, the main purpose of which is to process the data measured by the sensing element in a program in the microprocessor to complete the pumping work simply and accurately.

The automatic control inflation method of the invention mainly causes the air pumping device to start inflating the inflated material to an initial set pressure value, and the air pump of the air pumping device is temporarily stopped until the inflated body and the air pumping device are in overall pressure balance, and then the micro-processing is performed. The difference between the actual pressure value after the balance and the initial set pressure value is calculated, and the difference is added to the initial set pressure value to obtain a new set pressure value actually required for the secondary tire to be pumped.

According to this, when the pipeline pressure reaches the initial set pressure value and stops pumping, the electrical signal measured by the pressure sensing element is digitally converted and used as the information for calculating and evaluating the comparison and judgment of the built-in program. In the shortest time, it is determined that the pressure has reached equilibrium, which not only increases the accuracy of measuring the actual pressure value [p _b ], but also indirectly obtains the difference that needs to be complemented, and can shorten the waiting time of the second pumping.

Since the difference between the actual pressure value [p _b ] and the initial set pressure value [p _set ] can be calculated in a very short time, the compensation value [p _fix ] is obtained, and since the compensation value [pfix] is at the initial pressure It is obtained near the set value, so when this difference is used as the subsequent pressure compensation value, it is possible to obtain extremely high accuracy.

Use the program of the microprocessor to obtain the compensation value [p _fix ], and then reset the new pressure value [p _n ] according to the compensation value [p _fix ] as the preset pressure value for the subsequent pumping, and finally use the program to control the air pump to restart The pumping is started, the process is completely automated, no manual operation is required, and the required pressure difference can be accurately compensated to achieve the target of the initial set pressure value [p _set ].

(1)‧‧‧Air pumping device

(11)‧‧‧Air pipe

(12) ‧‧‧ gas nozzle

(13) ‧‧‧Air pump

(14) ‧ ‧ pressure gauge

(15)‧‧‧Microprocessor

(2) ‧‧‧Inflated objects

(21)‧‧‧Inflatable mouth

First picture: perspective view of the invention

Second figure: flow chart of the present invention

In order to more clearly show the technology of the present invention and the effects that can be achieved, the tires are taken as an example for detailed description. Please refer to the drawings and drawings of the display: first, please refer to the first and second figures, The automatic control inflation method of the present invention comprises the following implementation steps:

A. Start pumping: the air nozzle (12) and the inflated object (2) (the inflated object (2) can be a tire) are assembled at one end of the air pump (11) of the air pumping device (1) (21) Correspondingly, the air pump (13) that activates the air pumping device (1) generates a gas of a predetermined pressure, and the gas is driven into the inflated object (2) through the air nozzle (12) along the air tube (11). Inside. When the pressure sensing element connected to the air pump (11) detects that the pressure output from the air pump (13) has reached the initial set pressure value [pset], the signal is transmitted back to the micro processing. (15), the microprocessor stops the air pump (13) from pumping.

B. Waiting for pressure balance: After a short stop of the air pump, the pressure in the inflated object (2) and the pressure in the air pump (11) of the air pump (1) are balanced, and then the pressure is sensed by the pressure in the pressure gauge (14). The actual pressure value [p _b ] after the balance is measured, and the value is displayed on the pressure gauge (14), and the actual pressure value [p _b ] after the balance is also transmitted to the microprocessor (15).

C. Calculating the compensation value: the microprocessor (15) calculates the compensation value according to the built-in program of the actual pressure value [p _b ] after the balance value [p _fix ] is equal to the initial set pressure value [p _set ]. p _fix 〕, and then add this compensation value [p _fix ] to the initial set pressure value [p _set ] to obtain the new pressure value [p _n ] which is actually set by the inflated object (2), and the formula is as follows : compensation value [p _fix ] = initial set pressure value [p _set ] - actual pressure value after balance [p _b ]; new set pressure value [p _n ] = compensation value [p _fix ] + initial set pressure value [p _set 〕;

D. Complete pumping: The microprocessor (15) drives the air pump (13) to drive the corresponding pressure pounds according to the obtained new set pressure value [p _n ] to complete the work of inflating the inflated material (2).

By using the automatic control pressure airing method of the present invention, the difference between the initial set air pumping pressure and the actual pressure of the inflated object (2) can be obtained after the initial air pumping. When the second breath is added, the difference is added to the initial pumping pressure value, and it can be concluded that the inflated object (2) is actually required to set a new pressure value, and the second inflating is performed to accurately complete the inflated object (2). Inflatable effect. This not only saves the time and cost of pumping, but also shortens the service life of the pumping device (1) due to the reduced number of repeated airing.

As can be seen from the above structures and embodiments, the present invention has the following advantages:

1. When the pipeline pressure reaches the initial set pressure value and stops pumping, the electrical signal measured by the pressure sensing element and the digitally converted value are used as the information for calculating and evaluating the comparison and judgment of the built-in program. In the shortest time, it is determined that the pressure has reached equilibrium, which not only increases the accuracy of measuring the actual pressure value [p _b ], but also indirectly obtains the difference that needs to be complemented, and can shorten the waiting time of the second pumping.

2. Since the difference between the actual pressure value [p _b ] and the initial set pressure value [p _set ] can be calculated in a very short time, and the compensation value [p _fix ] is obtained, and since the compensation value [p _fix ] is It is obtained near the initial pressure set value, so when this difference is used as the subsequent pressure compensation value, extremely high accuracy can be obtained.

3. Use the microprocessor program to obtain the compensation value [p _fix ], and then reset the new pressure value [p _n ] according to the compensation value [p _fix ] as the preset pressure value for the subsequent pumping, and finally use the program control. The air pump restarts pumping, the process is fully automated, no manual operation is required, and the required pressure difference can be accurately compensated to achieve the target of the initial set pressure value [p _set ].

In summary, the embodiments of the present invention can achieve the expected effects, and the specific structures shown therein have not been seen in the same products, nor have they been disclosed before the application, and have fully complied with the provisions of the Patent Law. It is required that if an application for a patent for invention is filed in accordance with the law, and if the application is granted, the patent will be granted.

Claims (2)

An automatic control inflation method is such that the air pumping device starts to inflate the inflated material to an initial set pressure value, and the air pump of the air pumping device is temporarily stopped until the inflated body and the air pumping device are in overall pressure balance, and then the balance is calculated by the microprocessor. The difference between the actual pressure value and the initial set pressure value, and then the difference is added to the initial set pressure value to obtain a new set pressure value that is actually required for the inflated object to be inflated, and the microprocessor is continued. According to the newly set pressure value obtained, the air pump is driven to generate a corresponding pressure pound number to complete the work of pumping the inflated material. An automatic control inflation method comprises the following steps: A. starting air pumping: the air pump device controlled by the pressure gauge of the microprocessor is inflated to the initial set pressure value through the air pipe connected to the inflated body, when the group After the pressure sensing element in the pressure gauge connected to the air pipe detects that the output pressure has reached the initial set pressure value [p _set ], the signal is transmitted back to the microprocessor, and the microprocessor stops the air pump to pump air; B. Waiting for pressure balance: After the air pumping device is temporarily stopped, the pressure in the inflated material is balanced with the pressure in the air pumping device of the air pumping device, and then the actual pressure value [p _b ] is sensed by the pressure sensing element in the pressure gauge. At the same time, the actual pressure value [p _b ] after the balance is transmitted to the microprocessor; C. Calculating the compensation value: the microprocessor is compensated according to the compensation value [p _fix ] equal to the initial set pressure value [p _set ] minus the actual balance The pressure value [p _b ] is programmed to calculate the compensation value [p _fix ], and then the compensation value [p _fix ] is added to the initial set pressure value [p _set ] to obtain the actual need to be inflated. New pressure value . p _n]; cheer complete D: a microprocessor according to the calculated pressure obtained by the new value p _n [play] drives the blower pressure corresponding pounds, to complete the inflatable pump work.