JPH049113A - Air mat system - Google Patents

Abstract

PURPOSE:To contrive to secure the lowest air pressure necessary in the case of no load, even if the title system is placed in no-load state and the internal pressure of an air tube lowers, by setting a lower limit as a set air pressure, when the air pressure at the point of time stopping an air pressure regulation by a setting operation means is less than the lower limit. CONSTITUTION:In a control means 20, the lower limit of a set air pressure for each air tube is beforehand determined according to the difference between the loads in the shoulder, waist and leg regions of human bodies riding in respective air tubes, and when the air pressure at the point of time stopping an air pressure regulation by a setting operation means 19 is less than said lower limit, the lower limit is set as a set air pressure. As a result, even if the title system is placed in no-load state and the internal pressure of the air tube lowers, it is possible to secure the lowest air pressure necessary in the case of for no load.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air mat system for automatically controlling the air pressure of an air mat that is made elastic by being filled with air.

[Prior Art] Conventional air mats, as seen in Utility Model Application Publication No. 1-1.52558, have simply filled the mat body with pressurized air, but the air pressure that the user desires is automatically set. I couldn't.

Therefore, the present inventors formed the mat body using three air tubes corresponding to the shoulders, waist, and legs, and installed an air pump for pressurization, a solenoid valve for exhaust and depressurization, and an air pressure inside each air tube. The pressure sensor is equipped with a pressure sensor for individually detecting the air pressure of each air tube, and a setting operation means for setting the air pressure of each air tube. We have already proposed an air mat system that automatically controls air pumps and solenoid valves by comparing the detected air pressure with a threshold value based on the set air pressure.

[Problems to be Solved by the Invention] By the way, in the air system, there is no lower limit of the set air pressure, so if a person rides on the air tube and adjusts the air pressure,
When adjusting the hardness of the mat body, the air pressure is adjusted to an extremely low level, and when a person gets off the mat body, the internal pressure of the mat body with no load drops to a pressure close to Q g/cJ, causing no There was a problem that the air pressure would drop below the minimum required level when loaded. Therefore, if the vehicle is equipped with a function to automatically adjust the minimum required air pressure, the pressure will be adjusted every time a person gets on or off the vehicle, causing problems such as noise generation due to driving sound.

Furthermore, when setting the air pressure while the air tube is submerged, the initial stiffness setting is performed without anyone riding on the air tube, so a low air pressure may be used as the set air pressure.

In this case as well, the above-mentioned problem occurs.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a mat body that supports three air tubes, one for the shoulders, one for the waist, and one for the legs. By setting an appropriate lower limit of the set air pressure for each load, it is possible to secure the minimum air pressure required for no load even if the internal pressure of the air tube drops when no load is applied. We provide the best air mattress system.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention includes three air tubes corresponding to the shoulder region, the waist region, and the leg region, respectively, and a pressure force that sends pressurized air into each air tube. a pressure means, a pressure reducing means for exhausting and reducing the pressure of the air in each air tube, a pressure sensor for detecting the air pressure in each air tube, a setting operation means for setting the air pressure in each air tube, and the setting operation means. The air pressure in each air tube is adjusted individually by controlling the pressurizing means or depressurizing means according to the operation, and after the operation is stopped, the air pressure at the time the operation is stopped is stored separately as the set air pressure for each air tube. After this storage, the threshold value based on each set air pressure is compared with the detected air pressure of the corresponding pressure sensor, and the air pressure in the air tube is adjusted individually by controlling the above-mentioned pressurizing means or depressurizing means based on the comparison result. In an air mat system comprising means,
As a control means, the lower limit value of the set air pressure for each air tube is determined in advance according to the difference in the loads of the shoulders, waist, and legs of the human body riding on each air tube, and the point at which the air pressure adjustment by the setting operation means stops is determined. A control means is used to set the lower limit value as the set air pressure when the air pressure is equal to or lower than the lower limit value.

[Function] Therefore, according to the present invention, 1. As a control means, the lower limit value of the set air pressure for each air tube is set in advance based on the difference in the loads on the shoulders, waist, and legs of the human body riding on each air tube. In addition, when the air pressure at the time when air pressure adjustment by the setting operating means stops is below the above lower limit value, a control means is used that sets the above lower limit value as the set air pressure, so when setting the set air pressure, the setting operating means Even if the air pressure inside the air tube is adjusted to a lower air pressure than the lower limit value and the operation is stopped, the lower limit value of the set air pressure set in advance will be used as the set air pressure, so there will be no load and the internal pressure of the air tube will drop. However, it is also possible to secure the minimum air pressure required for no-load conditions.

[Example] The present invention will be explained below with reference to Examples.

Figures 1 and 2 show an embodiment in which the air mat system of the present invention is used as a bed. Built into the stand 3, the mat body 1
is installed on the bed base 3, and the shoulder area of the sleeper,
Three air tubes 4a corresponding to the waist and leg values, respectively.
- 4C are housed and arranged side by side in a chip molded urethane back frame 8 whose upper and lower opening surfaces are covered with urethane plates 5 and 6, and covered with a quilted cover 7. Each air tube 4a is inside 5.
Air flow pipes 14a to 14c connected to 4C are installed.

FIG. 3 shows the fluid circuit of the embodiment, and the air control device 2 includes an air pump 9 and electromagnetic valves 10a to 10c inserted into air flow passages connecting the air pump 9 and each air tube 4a to 4C. , an exhaust solenoid valve 11 , an air filter 12 attached to the air pump 9 , and an exhaust solenoid valve 1
The air tubes 4a to 4C and the solenoid valves 1.0 correspond to the silencer 13 and the solenoid valves 10a to 10c attached to the
pressure sensors 15a to 15c for detecting the pressure in the air flow passages connecting the air flow pipes 4a to 10c and detecting the air pressure in the corresponding air tubes 4a to 4C; Connectors 16a to 1 provided respectively
Connectors 18a to 18c provided at the ends of the air flow pipes 1.7a to 17C from the solenoid valves Oa to 10c are detachably connected to the electromagnetic valves 6c and 6c, respectively.

FIG. 4 shows a basic schematic circuit configuration diagram of the air control bag [2] of the embodiment, and includes a setting operation means for setting the air pressure in each air tube 4a to 4C separately, and a setting operation means for setting each air pressure P0. During the setting operation by the hand-held operating section 19 and the setting operating means of the hand-held operating section 19, the solenoid valves 1.0a to 10c, 11 are provided.
, outputs a control signal to control the air pump 9 to adjust the pressure, and also controls the display on the display means of the hand operation unit 19 so as to correspond to the air pressure PI detected by the pressure sensors 15a to 15c, and stops when the setting operation is stopped. The air pressure P detected by the pressure sensors 15a to 15c at the time is set to the air pressure P. The difference is detected by comparing the threshold value based on the filling set air pressure P0 and the detected air pressure P of the pressure sensors 15a to 15c. Based on the difference, the solenoid valves 10a to 10c, 11 , outputs a control signal for controlling the air pump 9, and changes the display on the display means of the hand operation unit 19 to the above-mentioned set air pressure P.
0, a drive unit 21 that receives control signals from the control unit 20 to drive the solenoid valves 10a to 10c, 11 and the air pump 9, and controls each part based on important signals from the control unit 20. and a power supply section 22 that supplies power to the.

One hand-held operation unit serves as an operation means for each air tube 4a.
Pressure push button 23a for increasing/decreasing the set air pressure P0 corresponding to ~4C, ~23Cz pressure reduction push pin 23
a2 to 23C2 are provided, and as a display means, the settable range of air pressure is divided into five groups and the set air pressure P is displayed.
0 or to which range the detected air pressure P1 belongs, five display elements L+ to L are attached to each air tube 4.
Pressure push buttons 23a to 23 correspond to a to 4b.
c1 and depressurization push buttons 23a2 to 23C2, the operation signals of each push button 22a1, 22a2 to 22C, and 22c2 are sent to the control unit 20, and the display signal from the control unit 20 is sent to the hand operation unit 19 by cable 24. It is designed to be sent through the respective channels.

In addition, the hand operation unit 19 is provided with an operation button 26 for instructing whether the main power supply is important, and a display element L0 for displaying the important state of the power supply.Similarly to the above, the operation signal and the display signal are transmitted through the cable. The information is exchanged between the control units 20 through 24. 25 is a connector for connecting between the hand operation section 19 and the control section 20.

The control unit 20 is actually composed of a one-chip microcomputer, and its functional circuit block is the fifth
As shown in the figure, A/D converters 27a to 27c convert analog electrical signals corresponding to the detected air pressure P1 from each pressure sensor 15a to 15c into digital signals, and the push buttons 23a+ and 23a2 of the hand operation unit 19. ~23c1,
An operation signal input section 28 that receives operation signals from the 23C2 and operation buttons 26, a signal processing section 34, and a control signal output section 3 that sends out control signals created by the signal processing section 34 to the outside.
5, a display signal output unit 36 that sends out the display signal created by the signal processing unit 34 to the outside, and a memory such as a ROM that stores dead width data (described later), calculations of the signal processing unit 34, and control operation programs. 37, and a memory 29 such as a RAM used for reading and writing set air pressure data and the like.

The signal processing section 34 controls the power supply section 22 according to the operation of the operation button 26.
Create a control signal or push button 23a +23az~
An operation control signal generation function 33 that generates control signals for controlling the air pump 9 and the solenoid valves 10a to 10b and 11 according to the operation of the buttons 23C+ and 23C2;
23 &2 to 23c+, at the time when the operation of 23c2 is stopped, the air pressure P1 value of the pressure sensors 15a to 15c at that time is written as the set air pressure P0 to the storage area of the memory 29 corresponding to each air tube 4a to 4c, and the power supply unit 2
Memory control function 3 that writes the important status of 2 to the memory 29
0, a threshold value based on the set air pressure P0 written in the memory 29 after the setting is completed, and the A/D converters 26a to 2.
A control signal generation function 31 that compares the detected air pressure P converted in step 6c and generates a control signal to control the air pump 9 and the solenoid valves 10a to 10b, 11 based on the difference, and a control signal generation function 31 that controls the on/off of the power supply unit 22. It is equipped with a display control function 32 that creates display signals such as display signals corresponding to the set air pressure P0 and detected air pressure P.

Next, the operation of the entire air mattress system of the present invention will be explained.

First, when using it for the first time, connect the power supply part 2 to the power outlet.
In the power down state when plug 2 is not inserted, the RAM
Setting air pressure data is not stored in the memory 29, and when the plug is inserted into the power outlet,
The control unit 20 is energized through the power supply unit 22, and the control unit 2o resets each unit to the initial state.

In this state, the display signal is sent to the hand operation unit 19 from the signal processing unit 3.
Since the display control function unit 32 of No. 4 is not sent out, the display element L0 and each of L1 to L are in an off state.

Here, when the operation button 26 of the hand operation section 19 is operated and =1, the operation signal is transmitted to the operation signal input circuit of the control section 20.
7 takes in the data of the power supply unit and writes it to the memory 29. In this state, the display control function 32 sends a display signal to the hand operation unit 19 to light up the display element L0, and the power supply unit is displayed by lighting up the display element Lo. , enters the standby state. In this state, each of the solenoid valves 10a to 10c and 11 is in a closed state.

Since the pressure inside each air tube 4a to 4c of the air mat 1 is in a non-pressure state, the user presses the push buttons 23a to 2 on the pressure side.
It is necessary to operate 3c1 to give a pressurizing operation signal to the control section 20.

First, when the push button 23a, for example, is operated, the control unit 20 starts operating based on the manual operation routine shown in FIG. The control unit 20 determines whether the air pump is for pressurization or depressurization, and the control unit 20 that determines that it is for pressurization generates a control signal for the air pump 9 and a control signal for opening the solenoid valve 10a, that is, a control signal for opening the solenoid valve 10a, based on the operation control signal generation function 33. A control signal for driving the means is given to the drive unit 21, and at the same time the air pump 9 starts operating through the drive unit 21, the solenoid valve 1 is activated.
Open 0a. Therefore, pressurized air is sent into the air tube 4a, increasing the internal pressure of the air tube 4a.

The internal pressure of the air tube 4a is continuously detected by the pressure sensor 15a, and based on the detected air pressure P, the display control function 32 of the control unit 2o uses a display element provided corresponding to the air tube 4a.

A display signal of ~L is sent to the hand-operated unit 18 to display the range to which the detected air pressure P1 belongs. The user pressurizes the mat body 1 until the desired air pressure is reached based on this display and the feeling when the user places his or her body on the mat main body 1.

Here, in the display of the display elements L1 to L, the display of 5 to
20g/c112, 21g/in the display of L,
c-2~35 Fl/cwa2, 36 g/c+++" = 5067cm2 in L1~L3, L,~L
, 51. is displayed. g/cm2~70g/cJ, L,
~L, respectively indicate 71 g/cm2 to 120 g/cm2, and as described above, based on the air pressure P detected by the pressure sensor 15a, the control unit 2° sequentially displays the display elements, ~
It lights up the L.

The width of this range setting is not evenly allocated, but is set so that it is evenly spaced so that it feels soft to the human eye.

Now, when the desired air pressure is obtained and the push button 23a is released, the operation control signal generation function 33 of the control section 20 is activated to stop outputting the control signal for the air pump 9, and stop the operation of the air pump 9. At the same time, the solenoid valve 10a is stopped and closed to maintain the air pressure in the air tube 4a, and at the same time, the air pressure Pl detected by the pressure sensor 15a is written as the set air pressure P0 in the control section 20 in the corresponding area of the memory 29. Remember.

Furthermore, if you feel that the air pressure is too high and too hard, you can operate the pressure reduction push button 23a2. In this case, the control unit 20 sends a control signal to the solenoid valves 10a and 11 as a pressure reduction means in response to the operation of the push button 23a2. is sent to the drive unit 21 to open the solenoid valves 10a and 11, and this opening exhausts the air in the air tube 4a to reduce the pressure. In response to Manako's pressure reduction, the display elements RI, ~L, are controlled to turn off, and the data of the set air pressure P0 stored in the memory 29 is pressed by pressing button 2.
When the push operation of 3a2 is released, the air pressure is rewritten to the air pressure at that time. In this way, the air pressure of each air tube 4a to 4c is sequentially set to the desired hardness corresponding to the shoulder region, waist region, and shoulder region, and each detected air pressure P is set to the set air pressure P.
Store as 0.

After setting the air pressure of each of the air tubes 4a to 4C in this manner so as to obtain the desired hardness, control shifts to an automatic pressure adjustment routine.

Next, the operation of this automatic pressure adjustment routine will be explained based on the flowchart shown in FIG.

First, the control unit 20 determines the set air pressure P stored in the memory 29. In addition to determining whether the air pressure P1 belongs to the above-mentioned five ranges (level 1 (=1 to n)), the detected air pressure P1 is sampled at fixed time intervals (20 minutes in the embodiment) and stored in the memory 29. Set air pressure P. The pressure difference is determined by comparing the pressure difference with the pressure difference, and it is determined whether the pressure is within the dead width APi, which is a threshold value set in advance and stored in the ROM 30. If the pressure is outside the dead width ΔPi, the pressure is reduced or increased. The pressure is adjusted by controlling the pressure. If not, it is determined whether a new pressure setting has been made by the manual operation routine described above, and if there is no new setting, the above-mentioned comparative determination is successively performed.

Here, the dead width ΔPi is the increase in air pressure due to temperature rise,
In addition to preventing air pressure control from being performed frequently in response to changes in air pressure due to fluctuations in atmospheric pressure, the mat itself
In order to prevent air pressure control in response to changes in air pressure caused by changes in load due to people getting on and off the top, it is set within a range in which the human body does not feel any difference in stiffness in sensory evaluation, and the dead width ΔPi is based on the set air pressure. The above 5 divided variable ranges of Po
The above-mentioned comparison and judgment in the table below is made based on this table, with the + side and - side corresponding to each level i, respectively.
The sampling timing is indicated by a black dot), and the air pressure at that time exceeds the upper limit of the + side dead width ΔPi corresponding to the set air pressure P0 stored in the memory 29, or the − side dead width ΔPi2. The Mm section 20 compares and determines whether the pressure is below the lower limit value as described above, and performs the pressure control described above. Of course each air tube 4a~4
Control is performed separately for each.

When sitting on the bed here, it is on the foot side or center,
Considering that it is unlikely that the waist and shoulders sit for more than 30 consecutive minutes at the same time, and that the pressure inside the air tubes 4a to 4c is likely to be higher when sitting than when lying down, In order to prevent pressure adjustment in such a seated state, the above-mentioned sampling interval is set, and as shown in Fig. 8, the judgment result exceeds the dead width ΔPi three times in a row, and the shoulder region , the pressure P1 in the air tubes 4a and 4b in the waist region are both insensitive width ΔPi.
The system outputs a control signal as described above to perform automatic pressure adjustment only when the pressure is exceeded.

In this case, when the detected air pressure P is outside the dead width ΔPi, 1 is added to the data in a predetermined area in the memory 30, and when it is within the dead width bPi, the data in the predetermined area is returned to 0, thereby increasing the number of detections. Count.

In order to prevent excessive fluctuations, the above-mentioned automatic pressure adjustment may be performed only when the determination result exceeds the dead width ΔPi three times in a row as shown in FIG.

When sitting on the bed here, it is on the foot side or center,
Considering that it is unlikely that the waist and shoulders sit for more than 30 consecutive minutes at the same time, and that the pressure inside the air tubes 4a to 4c is likely to be higher when sitting than when lying down, In order to prevent pressure adjustment in such a seated state, the above-mentioned sampling interval is set, and as shown in Fig. 8, the judgment result exceeds the dead width ΔPi three times in a row, and the shoulder region , waist region air tube 4a, 4. The pressure P1 in b is both insensitive width ΔP
Only when the pressure exceeds 1, a control signal is output as described above to automatically adjust the pressure.

In this case, when the detected air pressure P is outside the dead width ΔPi, 1 is added to the data in a predetermined area in the memory 29, and when it is within the dead width bPi, the data in the predetermined area is returned to 0, thereby counting. .

Now, in the above automatic pressure adjustment, when a control signal for pressure reduction is output, the solenoid valve 11 is opened and the solenoid valve 1 corresponding to the air tubes 4a to 4C to be depressurized is opened.
1. When a~llc is opened and pressure reduction is started, the control unit 20 continuously switches the pressure sensors 15a~15 corresponding to the pressure reduction.
The detected air pressure P of c is taken in, and the corresponding air tube 4 is
The air pressure in a to 4C is below the upper limit value and reaches a constant value (3
g/cII2), the output of the control signal is stopped and the solenoid valve 11 and the corresponding solenoid valves 10a to 10C are closed.

Similarly, in the case of pressurization, the air pump 9 is driven, and the solenoid valves 11a to 11. When c is opened and pressurization is started, the control unit 20 continuously switches the pressure sensors 15a to 15a to 15a corresponding to the pressurization.
5c is taken in, and the air pressure in the corresponding air tubes 4a to 4C exceeds the above lower limit value to a constant value (
3 g/cm2), the output of the control signal is stopped, the operation of the air pump 9 is stopped, and the corresponding solenoid valves 10a to 10c are closed.

In this way, it is determined based on the above conditions whether the upper limit of the dead width ΔPi1 is exceeded or the lower limit of the dead width ΔP is lower than the lower limit, and when the conditions are met, pressure reduction or pressurization control is performed to control the air tube. The air pressure in 4a to 4C is maintained within a dead width ΔPi set around the set air pressure P0. Of course, control may be performed to return to the set air pressure Pa during the pressure adjustment.

Display element L1 during the control operation of this automatic pressure adjustment
The display of L2 maintains the display corresponding to the set air pressure P0, and the actual air pressure inside the air tubes 4a to 4c is the set air pressure P. The display does not change even if the value exceeds or falls below the range to which it belongs.

In other words, the upper air pressure appears to be unchanged, so that the user is not confused by the change in display.

By the way, a lower limit value (5 g/cm2) is set for each of the air pressures of the air tubes 4a to 4b, and when the air pressure drops to this lower limit value, the same control as the above-mentioned pressurization control is performed to lower the air pressure to 5 g/cm2. rise to. In other words, the set air pressure P for level 1-. Even if the range of insensitivity width ΔPi2 for ΔPi2 includes values below the lower limit value, the lower limit value is always maintained when the lower limit value is exceeded.

Furthermore, in the air mat system of the present invention, the set air pressure P
The lower limit value of 0 is determined corresponding to each of the air tubes 4a to 4b. In other words, the air tube 4a in the shoulder area has 1
08/cfi2, waist air tube 15g/am
2, and 8 g/am for the air tube 4C in the leg area.
' are determined respectively, and when the air pressure P1 at the time of stopping the operation is below the respective lower limit value at the time of first use as shown in FIG. 6, the above lower limit value is stored as the set air pressure P0. In addition, when reducing the pressure after pressurizing the set air pressure P0 or higher, when the lower limit of the set air pressure P0 is reached, the pressure reduction control is stopped and the lower limit value is automatically stored as the set air pressure P0. .

The lower limit of this value is set to the size of the load so that when the load on each corresponding part is removed, the internal pressure of each air tube 4a to 4c is approximately close to the lower limit of level 1, 5 g/cm''. It's different depending on.

It should be noted that an upper limit is set for the pressurizing operation in the manual or automatic pressure adjustment, and when the air pressure reaches 120g1cn2, the control section 20 automatically stops outputting the control signal to the air pump 9 and stops the operation.

In addition, the time is counted from the start of the pressurization/depressurization operation, and if the operation time continues for a certain period of time (for example, 30 minutes), the main power is turned off and the operation of the solenoid valves 10a to 10C and the air pump 9 is stopped. The control section 20 is configured to send a flicker display signal to the hand-held operation section 19 to stop the operation of the display device 11 and to blink the display element -0.

Now, after setting the air pressure corresponding to the desired hardness as described above, if the power is cut off, the air tube 4a~
4b is maintained by the closed state of the solenoid valves 10a to 10b, so when the power is turned on again, the control unit 20 controls the air pressure in the air tubes 4a to 4b detected by the pressure sensors 15a to 15c at this time. Set the air pressure P1 of the air pressure P. This is written in the memory 29, and thereafter the control state is entered by the above-mentioned automatic pressure adjustment routine.

[Effects of the Invention] In the air mat system configured as described above, the present invention uses the control means to set the lower limit of the set air pressure for each air tube in advance, and to set the lower limit value of the set air pressure for each air tube by adjusting the shoulder, waist, and leg regions of the human body riding on each air tube. It is determined according to the difference in the load of
Since we used a control means that sets the above lower limit value as the set air pressure when the air pressure at the time when the air pressure adjustment by the setting operation means stops is less than the above lower limit value, when setting the set air pressure, the setting operation means Even if the air pressure is adjusted to a lower air pressure than the lower limit above and the operation is stopped, the lower limit of the set air pressure set in advance will be used as the set air pressure, so there will be no effect even if the internal pressure of the air tube drops due to no load. This has the effect of making it possible to secure the minimum air pressure required for the load.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the mat main body of the same, Fig. 3 is a schematic circuit configuration diagram of the same -E, and Fig. 4 is a fluid flow diagram of the same. The circuit diagram, FIG. 5 is a conceptual circuit configuration diagram of the control section same as above, FIG. 6 is a flowchart showing the manual operation routine of same as above, and FIG. FIG. 8 is a waveform diagram for explaining the sampling operation same as above. 1 is a mat main body, 2 is an air pressure control device, 4a to 4c are air tubes, 9 is an air pump, 10a to 10c are solenoid valves, 11 is an exhaust solenoid valve, 15a to 15c are pressure sensors,
Reference numeral 19 represents a hand-held operation unit, and 20 represents a control unit. Agent: Patent Attorney Ishi 1) Voluntary author of the 7th Procedural Amendment) June 1990, 1990 Patent Application No. 114354 2, Name of the invention Air Mat System 3, Relationship with the person making the amendment Patent applicant address 1048 Kadoma, Kadoma City, Osaka Prefecture Name (58
3) Matsushita Electric Works Co., Ltd. Representative: Toshio Miyoshi 4, Agent postal code: 530 Address: 1-12-17-5 Umeda, Kita-ku, Osaka City, Date of amended order: Self-initiated

Claims (1)

[Claims] (1) Three air tubes corresponding to the shoulder region, waist region, and leg region, a pressurizing means for sending pressurized air into each air tube, and a decompression means for exhausting and decompressing the air in each air tube. , a pressure sensor that detects the air pressure in each air tube, a setting operation means that sets the air pressure in each air tube, and a pressure increase means or depressurization means that is controlled according to the operation by the setting operation means to adjust the air pressure of each air tube. The air pressure in each tube is adjusted individually, and after the operation is stopped, the air pressure at the time the operation is stopped is stored separately as the set air pressure for each air tube. After this storage, the threshold value based on each set air pressure and the corresponding pressure sensor are detected. In the air mat system, the air mat system includes a control means for comparing the air pressure with the air pressure and controlling the above-mentioned pressurizing means or depressurizing means based on the comparison result to adjust the air pressure in each air tube separately. The lower limit value of the set air pressure for each air tube is determined in advance according to the difference in the load on the shoulders, waist, and legs of the human body riding on each air tube, and the air pressure at the time when the air pressure adjustment by the setting operation means is stopped is less than the above lower limit value. An air mattress system characterized by using a control means for setting the lower limit value as a set air pressure at the time of the air mat system.