JP2019182123A - Vehicle seat control device - Google Patents

Abstract

To provide a vehicle seat control device which enables a change instruction of a support state to be properly performed.SOLUTION: A vehicle seat control device 100 includes: an expansion bag 5 which supports a body of an occupant seated on a seat 4 disposed on a vehicle cabin S of a vehicle 200; a supply/discharge part 3 which supplies/discharges a fluid to/from the expansion bag 5; a pressure detection part 6 which detects pressure in the expansion bag 5; and a control part 1 which determines a target pressure in the expansion bag 5. The control part 1 performs target pressure change process for changing the target pressure when the pressure detection part 6 detects a predetermined pressure fluctuation pattern.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat control apparatus.

  Centrifugal force is generated when the vehicle travels on a curve. For this reason, when the vehicle travels on a curve, the body of the occupant seated on the seat may be tilted outward and the proper seating posture may not be maintained. Therefore, vehicle seats and the like that support the occupant when traveling on a curve are provided so that the occupant can maintain an appropriate sitting posture (for example, Patent Document 1 to Patent Document 3). For example, a member that supports the side of the occupant's body in the seat is referred to as a side support.

  Patent Document 1 discloses a vehicle seat side support variable mechanism that changes the holding force of the side support based on inputs from a vehicle speed sensor, a steering angle sensor, and a lateral G sensor (an acceleration sensor that detects acceleration along the horizontal direction). Is described. However, when changing the holding force of the side support based on the input from the sensor etc., the state of the support is not changed at the time when the occupant begins to be loaded (for example, at the entrance of the curve), and the centrifugal force There is a problem that even if the change of the support state is started after starting to be added, a comfortable support state cannot be provided during the period until the desired support state is reached.

  Patent Document 2 discloses a support member for a seat (an example of a vehicle seat) that supports the right side of the occupant and a seat that supports the left side of the occupant in order to prevent the occupant's body from tilting outward due to centrifugal force. It is described that control (hereinafter referred to as support control) for adjusting the position of each support member is performed. This control is performed, for example, by predicting the centrifugal force applied to the occupant based on the curve information, the vehicle speed, etc., and moving the left and right support members in a direction approaching the occupant in accordance with the predicted centrifugal force. Is called. However, even if the support state is changed by taking into account the predicted centrifugal force without considering the passenger's physique and the passenger's preference for the support force, the passenger may not be sufficiently comfortable.

  As described in Patent Document 1 and Patent Document 2, even if only external factors such as centrifugal force are considered, the passenger cannot obtain sufficient comfort. Therefore, it is conceivable to change the support state based on the passenger's preference or desire.

  Patent Document 3 describes a seat control device (vehicle seat control device) that can perform suitable support control regardless of the occupant's physique. In addition to the control based on the centrifugal force and the like, the seat control device operates the operation member for adjusting the support state of the left and right support members operated by the occupant. An operation amount acquisition means for acquiring the amount is provided. In this way, if the occupant himself / herself adjusts the support state, it is considered that a support state based on the occupant's preference and desire can be realized.

Japanese Utility Model Publication No. 4-76531 JP 2004-042792 A JP 2010-179900 A

  As described above, when an appropriate support state can be adjusted so that an appropriate sitting posture can be maintained, the ride feeling such as passenger comfort is enhanced. Furthermore, if the support state can be adjusted and the instructions and operations for changing the support state can be appropriately performed so that the support state can be adjusted according to the desire of the occupant, the ride feeling of the occupant is further enhanced. However, there is room for improvement in the input interface and the like for appropriately instructing to change the support state during driving. Therefore, it is desired to provide a vehicle seat control device that can appropriately issue a support state change instruction even during driving.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a vehicle seat control device capable of appropriately giving a support state change instruction.

  In order to achieve the above object, the vehicle seat control device according to the present invention has the following features: an inflatable bag that supports the body of an occupant seated in a vehicle seat disposed inside the vehicle, and the inflatable bag. A supply / discharge section for supplying and discharging fluid; a pressure detection section for detecting pressure in the inflatable bag; and a control section for determining a target pressure in the inflatable bag, wherein the control section includes the pressure When the detection unit detects a predetermined pressure fluctuation pattern, the target pressure changing process for changing the target pressure is executed.

  According to the above configuration, when a pressure fluctuation pattern is generated in the inflatable bag, the pressure fluctuation pattern is detected by the pressure detection unit, and the target pressure changing process is executed by the control unit. In other words, if a predetermined pressure fluctuation pattern is input to the inflating and deflating bag, the occupant can cause the control unit to execute the target pressure changing process.

  Moreover, according to the said structure, the expansion / contraction bag is supporting the passenger | crew's body. That is, the inflatable bag is in a state close to the occupant's body. Therefore, the occupant can easily press the inflatable bag using his / her body. Therefore, the occupant can change the pressure inside the inflatable bag by a simple operation of pressing the inflatable bag close to his / her body. Further, since the occupant can operate by pressing the inflating and deflating bag in the state of being close to his / her body, it is possible to perform an intuitive operation.

  Furthermore, according to the said structure, it is also easy for a passenger | crew to press an expansion / contraction bag so that it may become a predetermined pressure fluctuation pattern. This is because the expansion / contraction bag causes a pressure change inside even if any part of the expansion / contraction bag is pressed. For example, the occupant can generate a predetermined pressure fluctuation pattern in the inflatable bag by pressing the body or shaking the body from side to side.

  Thus, unlike the operation of pressing a specific position, such as an operation push button, the operation for generating a predetermined pressure fluctuation pattern in the expansion / contraction bag can be performed by pressing any part of the expansion / contraction bag. Yes. That is, the operation of generating a predetermined pressure fluctuation pattern in the inflatable bag by pressing is extremely simple. Further, the operation can be performed even when the passenger holds the handle. Therefore, for example, it can be easily performed even during operation. Further, it is possible to avoid a decrease in safety during driving.

  That is, according to the above configuration, the vehicle seat control device is provided that allows the occupant to appropriately issue a support state change instruction even when the user cannot concentrate on other operations than driving, such as during driving. Is possible. The occupant can also generate a predetermined pressure fluctuation pattern in the inflatable and deflated bag by pressing the inflatable and inflatable bag with a fist.

  A further characteristic configuration of the vehicle seat control device according to the present invention includes an acceleration detection unit that detects acceleration of the vehicle, and the control unit determines the target pressure according to the acceleration.

  According to the above configuration, the target pressure in the inflating and deflating bag is determined in accordance with acceleration (for example, acceleration in the left-right direction) that occurs when the vehicle turns a curve. As a result, the target pressure in the inflating and deflating bag is adjusted according to the traveling speed of the vehicle and the turning angle of the curve along which the vehicle travels, so that the comfort of the passenger can be improved.

  In a further characteristic configuration of the vehicle seat control device according to the present invention, the target pressure is determined by multiplying an initial holding pressure, which is a constant, by a parameter determined in accordance with the acceleration, A set of interval parameters determined corresponding to each of a plurality of acceleration intervals obtained by dividing the acceleration into predetermined acceleration ranges, and the target pressure changing process is performed when the predetermined pressure fluctuation pattern is detected. Further, it is an operation for changing the section parameter corresponding to the acceleration.

  According to the above configuration, the body support state that reflects the occupant's desire is adjusted for each predetermined acceleration range (acceleration section) while performing body support of the passenger based on the acceleration applied to the passenger seated in the vehicle seat. Can be done. Thereby, a passenger | crew's comfort can be improved.

  According to still another feature of the vehicle seat control device according to the present invention, when the control unit detects the predetermined pressure fluctuation pattern before the pressure in the inflating and deflating bag reaches the target pressure, The target pressure is lowered.

  According to the above configuration, the occupant presses the expansion / contraction bag to generate a predetermined pressure fluctuation pattern in the process in which the supply / discharge portion is supplying air and the expansion / contraction bag is inflated and the pressure is rising. In some cases, the control unit decreases the target pressure. As a result, the user lowers the target pressure of the inflating and deflating bag when the inflating and deflating bag feels that the inflating and deflating bag is excessively inflated, for example, when the support is too tight, in the process where the pressure of the inflating and deflating bag rises The change instruction of the pressure support state can be performed with a simple operation.

  According to still another feature of the vehicle seat control device according to the present invention, when the control unit detects the predetermined pressure fluctuation pattern after the pressure in the inflation / deflation bag reaches the target pressure, The target pressure is increased.

  According to the above configuration, the control unit increases the target pressure when the occupant generates a predetermined pressure variation pattern by pressing the expansion / contraction bag or the like in a state where the expansion / contraction bag has expanded and reached the target pressure. . This allows the user to set the target pressure for the inflatable bag when the pressure rise of the inflatable bag stops and the bulge stops, for example when the support feels loose, such as when the support is loose. An instruction to change the pressure support state to be increased can be performed with a simple operation.

  A further characteristic configuration of the vehicle seat control device according to the present invention includes a storage unit that stores the predetermined pressure fluctuation pattern, and the predetermined pressure fluctuation pattern includes the inflatable bag according to an instruction from the occupant. Corresponding to the pressure fluctuation pattern when it is intentionally pressed, the control unit, when the pressure detection unit detects the predetermined pressure fluctuation pattern stored in the storage unit, based on the predetermined pressure fluctuation pattern Thus, the target pressure changing process is executed.

  According to the above configuration, the predetermined pressure fluctuation pattern is stored in the storage unit as a pressure fluctuation pattern that is generated by intentionally pressing the inflating and deflating bag for the passenger to give an instruction. Thus, the occupant intentionally presses the expansion / contraction bag to cause the inflation / deflation bag to change in pressure according to the instruction, thereby allowing the control unit to execute the target pressure changing process based on the instruction content.

  It is possible to provide a vehicle seat control device capable of appropriately performing a support state change instruction.

Block diagram illustrating the configuration of a vehicle seat control device Schematic configuration diagram of a vehicle equipped with a vehicle seat control device Schematic configuration diagram of a seat equipped with a vehicle seat control device The figure which shows an example of control of the internal pressure of an inflatable bag The figure which shows an example of the predetermined pressure fluctuation pattern applied in the process in which the internal pressure of an expansion / contraction bag increases The figure which shows an example of the predetermined pressure fluctuation pattern applied after the internal pressure of the inflating and deflating bag reaches the predetermined pressure Explanatory drawing of the detection method of a predetermined pressure fluctuation pattern Flow chart of internal processing of vehicle seat control device Flow chart of internal processing to detect occupant operations Example of initial control target value Example of control target value adjustment value

  A vehicle seat control apparatus according to an embodiment of the present invention will be described with reference to FIGS.

〔overall structure〕
The overall configuration of the vehicle seat control apparatus 100 according to the present embodiment will be described. As shown in FIGS. 1 and 2, the vehicle seat control apparatus 100 is used for a vehicle 200 that is a traveling vehicle such as a passenger car.

  The vehicle seat control device 100 includes an inflatable bag 5 that supports the body of an occupant H seated in a seat 4 (an example of a vehicle seat) disposed in a passenger compartment S formed inside a vehicle body 8 of the vehicle 200. The supply / discharge unit 3 for supplying and discharging air (an example of fluid) to the inflatable bag 5, the pressure detector 6 for detecting the pressure in the inflatable bag 5, and the control for determining the target pressure in the inflatable bag 5 Part 1.

  Further, the vehicle seat control device 100 includes a storage unit 9 that stores parameters and the like that the control unit 1 refers to in order to determine a target pressure in the inflatable / deflated bag 5.

  The vehicle 200 includes a vehicle seat control device 100, an ECU 80, a sensor 81 (an example of an acceleration detection unit), a compressor 82, and a navigation unit 7 in a space (not shown) formed inside the vehicle body 8. have.

  The vehicle seat control device 100, ECU 80, navigation unit 7, sensor 81 and other devices and systems, sensors, and the like are, for example, CAN (Control Area Network) and LIN (Local Interconnect Network) in-vehicle communication lines ( Hereinafter, it is connected so as to be capable of two-way communication.

  The expansion / contraction bag 5 expands when a fluid (air in this embodiment) is supplied through the supply / discharge portion 3 and contracts when the fluid is discharged through the supply / discharge portion 3. The supply / discharge unit 3 performs the supply and discharge according to the command of the control unit 1. The control unit 1 issues a supply / discharge command to the supply / discharge unit 3 based on information from the navigation unit 7 and the sensor 81, parameters stored in the storage unit 9, or a command from the occupant H.

[Detailed explanation]
Below, each part of the vehicle seat control apparatus 100 and the vehicle 200 will be described in detail.

  As shown in FIG. 2, the vehicle 200 has a seat 4 in a passenger compartment S formed inside the vehicle body 8. In the present embodiment, four seats 4 are arranged in the order of the seat 4a to the seat 4d counterclockwise from the front right side of the vehicle body in the passenger compartment S. A handle 89 is provided in front of the seat 4a. In the present embodiment, the occupant H seated on the seat 4a is the driver. The vehicle 200 has four doors 85 corresponding to the four seats 4. Similarly to the seat 4, the door 85 is arranged in the order of the door 85 a to the door 85 d counterclockwise from the front right side of the vehicle body. The seat 4a to the seat 4d are different in the relationship with the door 85 and the handle 89, but are the same in the relationship with the vehicle seat control apparatus 100. Therefore, the seat 4a will be described below as an example. In the following description, the seat 4a will be described as the seat 4 except when it is necessary to distinguish between the seat 4a and the other seats 4.

  The front in the present embodiment refers to a direction toward the traveling direction of the vehicle 200. The rear refers to a direction that is opposite to the traveling direction of the vehicle 200. Left or right is defined with respect to the traveling direction of the vehicle 200. In FIG. 2, the side facing the handle 89 as viewed from the seat 4a is the front, and the opposite direction is the rear. Further, the right-hand direction of the occupant H seated on the seat 4a is right, and the left-hand direction is left.

  The vehicle 200 is provided with a sensor 81 that can acquire information related to the acceleration in the left-right direction of the vehicle 200. The lateral acceleration is an acceleration that acts on the outside of the turn when the vehicle 200 turns. Sensor 81 may be, for example, a sensor that directly measures acceleration, or a combination of a steering sensor that detects the steering angle of vehicle 200 and a speed sensor of vehicle 200. The sensor 81 is an acceleration calculation unit 14 (an example of an acceleration detection unit), which will be described later, either by acquiring information directly from the sensor 81 or by calculating information acquired from the sensor 81, whereby the acceleration in the lateral direction of the vehicle 200 is calculated. Any sensor that can determine a may be used. Information relating to the acceleration acquired by the sensor 81 is acquired by the control unit 1, the navigation unit 7, the ECU 80, or the like as necessary.

  The navigation unit 7 is a car navigation system that performs setting of position information of the vehicle 200 and a travel route. The navigation unit 7 includes a navigation device control unit 71 that is a central control mechanism of the navigation unit 7, a map storage unit 72 that stores map information, and a GPS receiver 79 (global positioning system, Global Positioning System).

  The navigation unit 7 acquires GPS information including latitude and longitude information with the GPS receiver 79, and displays the current position of the vehicle 200, the currently traveling route (the currently traveling road), and the route that is to be traveled from now on. Such information (hereinafter referred to as route information) can be specified. The route information specified by the navigation unit 7 can be acquired by the control unit 1 or the ECU 80 as necessary.

  In the present embodiment, the navigation device control unit 71 acquires GPS information from the GPS receiver 79, the map information stored in the map storage unit 72 is read out by the GPS receiver 79, and the navigation device control unit 71 performs GPS. By comparing the information with the map information, the route information of the vehicle 200 can be specified.

  The seat 4 is a vehicle seat mounted on the vehicle 200. In the present embodiment, as shown in FIG. 3, the seat 4 includes a seat portion 42 on which the occupant H is seated, a backrest portion 41 of the occupant H that extends upward and rearward from the rear end of the seat portion 42, and a backrest portion 41. And a headrest 43 on which an occupant H provided at the upper end of the head rests. An inflatable bag 5 is accommodated inside the seat cover of the seat 4. In addition, the aspect of the seat 4 is not limited to the aspect of FIG. The seat 4 may not have the headrest 43, for example.

  The inflatable bag 5 is a bag-like member that can be held in a state where a fluid is accommodated therein. The inflatable bag 5 is inflated when a fluid such as air is supplied to the inside thereof, and is inflated by discharging the fluid from the inside. In the present embodiment, the inflatable bag 5 is inflated by supplying air therein.

  The expansion / contraction bag 5 functions as a so-called air spring by maintaining a state in which air is enclosed. And as the said air spring, the property as an elastic body which has a predetermined repulsive force can be acquired. The elastic force of the inflatable bag 5 can be adjusted by changing the internal pressure of the inflatable bag 5. The elastic force of the expansion / contraction bag 5 decreases as the internal pressure of the expansion / contraction bag 5 decreases, and increases as the internal pressure increases.

  In FIG. 3, as the inflatable bag 5 in the seat 4, the right first inflatable bag 51 and the left second inflatable bag 52 accommodated inside the seat cover of the backrest portion 41, and the seat cover of the seat portion 42. The right third inflatable bag 53 and the left fourth inflatable bag 54, the right fifth inflatable bag 55 and the left sixth inflatable bag 55 accommodated inside the seat cover of the headrest 43. A bag 56 is shown as an example. Hereinafter, the first inflatable bag 51, the third inflatable bag 53, and the fifth inflatable bag 55 may be collectively referred to as the right inflatable bag 5. Further, the second inflatable bag 52, the fourth inflatable bag 54, and the sixth inflatable bag 56 may be collectively referred to as the left inflatable bag 5.

  The right inflatable bag 5 and the left inflatable bag 5 are configured to support the body of the occupant H seated on the seat 4 from both the left and right sides while being inflated by being supplied with air. Thus, when the inflatable bag 5 supports the occupant H, the inflatable bag 5 supports the occupant H's body with the elastic force as an air spring as described above. The occupant H is supported by an appropriate elastic force of the left and right inflatable bags 5 so that the occupant H can stably and comfortably maintain the posture seated on the seat 4. If the elastic force of these left and right inflatable bags 5 is too small, the support of the body becomes insufficient, and the occupant H may feel uncomfortable, for example, because of fatigue. If the elastic force of the left and right inflatable bags 5 is too great, the body is tightly pressed and the occupant H may feel uncomfortable, for example, by feeling cramped.

  The first inflatable bag 51, the second inflatable bag 52, the third inflatable bag 53, the fourth inflatable bag 54, the fifth inflatable bag 55, and the sixth inflatable bag 56 have different installation positions in the seat 4. However, it is used in the same usage and application in that it supports the body of the occupant H, and has the same effect. Therefore, the first inflatable bag 51, the second inflatable bag 52, the third inflatable bag 53, the fourth inflatable bag 54, the fifth inflatable bag 55, and the sixth inflatable bag 56 can be comprehensively explained. Therefore, in the following description, the first inflatable bag 51, the second inflatable bag 52, the third inflatable bag 53, the fourth inflatable bag 54, and the fifth inflatable bag unless otherwise described. Each of 55 and the sixth inflatable bag 56 will be described simply as the inflatable bag 5.

  Each expansion / contraction bag 5 is connected to a pressure detection unit 6 including a pressure sensor for detecting the pressure of the air inside. For example, a P sensor 61 (an example of a pressure detection unit) that is a pressure sensor of the pressure detection unit 6 is connected to the first inflatable bag 51. Further, for example, a P sensor 62 (an example of a pressure detection unit) that is a pressure sensor of the pressure detection unit 6 is connected to the second expansion / contraction bag 52. The other inflatable bags 5 are the same, although the explanation is omitted.

  As shown in FIGS. 1 and 3, the air supply / exhaust unit 3 supplies and discharges air to and from the inflatable and deflated bag 5 based on commands from the control unit 1. Air supply to the inflatable bag 5 is performed by air supplied from the compressor 82 via the supply / exhaust portion 3. The control unit 1 instructs the supply / exhaust unit 3 to supply air to the expansion / contraction bag 5, exhaust air from the expansion / contraction bag 5, and maintain the pressure of the expansion / contraction bag 5 (never supply or exhaust air).

  The control unit 1 will be described. The control unit 1 is a central control mechanism that controls the overall operation of the vehicle seat control apparatus 100. The control unit 1 can be configured by, for example, a software program for realizing various processes, a CPU that executes the software program, and various hardware controlled by the CPU. In the present embodiment, the control unit 1 is a computer including a CPU and an input / output circuit. In the present embodiment, programs, data, and control parameters necessary for the operation of the control unit 1 are stored in the storage unit 9. These programs and data storage destinations are not particularly limited. These programs and data may be stored in a storage device such as a disk or flash memory provided separately. Further, it may be an external server or a storage unit connected so as to be communicable.

  The storage unit 9 is a storage device that stores information necessary for the operation of the vehicle seat control apparatus 100. The storage unit 9 includes a storage device such as an HDD (Hard Disk Drive) or a nonvolatile RAM (Random Access Memory) such as a flash memory. The storage unit 9 may be physically one storage device or a storage area virtually provided in another storage device. In the present embodiment, the storage unit 9 is a flash memory that is communicably connected to the control unit 1 via the in-vehicle network N.

  In the storage unit 9, the standard table storage unit 90 that stores basic parameters for the control unit 1 to instruct the supply / exhaust unit 3, and the basic parameters stored in the standard table storage unit 90 according to the preference of the occupant H The personal table storage unit 91 that stores customized parameters and the variation pattern storage unit 92 that stores information for determining the command content of the occupant H from the occupant H operation.

  The control unit 1 instructs the supply / exhaust unit 3 to supply / exhaust by executing the program stored in the storage unit 9 and controls the internal pressure of the inflatable bag 5 and the occupant H operation command. An operation determining unit 12 for determining, a holding amount managing unit 13 for realizing control of the inflatable bag 5 according to the preference of the occupant H, and an acceleration calculating unit 14 for transferring acceleration information to the holding amount managing unit 13 are software. Is realized.

  The acceleration calculation unit 14 acquires information related to the acceleration of the vehicle 200 from the sensor 81 and obtains the acceleration a in the right / left direction. The acceleration calculation unit 14 passes the acceleration a in the left-right direction to the holding amount management unit 13 as acceleration information.

  The acceleration calculation unit 14 can also obtain route information from the navigation unit 7. Based on the route information acquired from the navigation unit 7, the acceleration calculation unit 14 obtains the left-right acceleration a that is predicted to occur in the future travel, and the left-right acceleration a based on the prediction is determined as a holding amount management. It is also possible to pass it to the section 13.

  The pressure control unit 11 is based on the parameters stored in the standard table storage unit 90 and the individual table storage unit 91, the route information of the navigation unit 7, the lateral acceleration a obtained by the acceleration calculation unit 14, and the like. 3 is commanded to supply / discharge.

  In the present embodiment, as will be described later, the pressure control unit 11 expands and contracts the target value A (target value An, where n is an integer of 1 or more, and the same applies hereinafter) that is the target pressure of the internal pressure of the expansion and contraction bag 5. On the basis of the current internal pressure 5, the supply / exhaust unit 3 is supplied with air (that is, a pressurization request) and exhausted (that is, a pressure reduction request). For example, the pressure control unit 11 instructs the supply / discharge unit 3 to perform intake / exhaust based on the difference between the target value A, which is the target pressure of the internal pressure of the inflatable bag 5, and the current internal pressure of the inflatable bag 5.

  In the standard table storage unit 90, for example, as shown in Table 1, a plurality of patterns P (for example, patterns P1 to P5) that define the target value A of the internal pressure of the inflatable bag 5 are set in the form of a relational database. Has been. Although not individually shown in the table, the pattern P includes a first inflatable bag 51, a second inflatable bag 52, a third inflatable bag 53, a fourth inflatable bag 54, a fifth inflatable bag 55, and a sixth inflated bag. Each of the compressed bags 56 is set separately.

  These patterns P are determined corresponding to each predetermined range divided with respect to the acceleration a in the left-right direction. In these patterns P, a target value A that is a control target value of the internal pressure of the corresponding inflatable bag 5 is set. In the case of Table 1, the target value A in each pattern P is an adjustment count α1 in which a different value is set for each pattern P in a common constant C (an example of an initial holding pressure) through each pattern P. To an adjustment count α5 (an example of a section parameter and its set). In the present embodiment, the value of the adjustment count α1 is zero. The pattern P (target value A) is an initial value of a pattern PHn (target value An) described later.

  An example of setting the target value A is shown in FIG. FIG. 10 shows an example in which the acceleration a increases for each section corresponding to each pattern P as the acceleration a increases.

  In the individual table storage unit 91, for example, as shown in Table 2, for each occupant Hn that is an individual occupant H, a plurality of patterns PHn that define a target value An of the internal pressure of the inflatable bag 5 (for example, pattern P1Hn to pattern P5Hn) are set in the form of a relational database. Although not individually shown in the table, the pattern PHn includes a first inflatable bag 51, a second inflatable bag 52, a third inflatable bag 53, a fourth inflatable bag 54, a fifth inflatable bag 55, and a sixth inflated bag. Each of the compressed bags 56 is set separately.

  These patterns PHn are determined in correspondence with a predetermined predetermined range for the acceleration a in the left-right direction. These patterns PHn are each set with a target value An of the internal pressure of the corresponding inflatable bag 5. In the case of Table 2, the target value An in each pattern P is set to a common constant C through each pattern PHn, and a different value is set for each pattern P to an adjustment count α5Hn (interval parameter α5Hn). And an example of the set). In the present embodiment, the value of the adjustment count α1Hn is zero. The constant C in the target value A of the pattern P stored in the standard table storage unit 90 and the constant C in the target value An of the pattern PHn stored in the individual table storage unit 91 are the same. The pattern PHn (target value An) is a value obtained by adjusting the pattern P (target value A).

  An example of setting of the target value An is shown in FIG. FIG. 11 shows an example in which the acceleration a increases for each section corresponding to each pattern P as the acceleration a increases. The target value An is changed so that the value is large in the range where the acceleration a is small and the value is small in the range where the acceleration a is large, compared to the target value A which is the initial value.

  A specific example in which the occupant H is the occupant H1 will be described. In the individual table storage unit 91, as shown in Table 3, for example, a plurality of patterns PH1 (for example, patterns P1H1 to P5H1) that define the target value A1 of the internal pressure of the inflatable bag 5 are related to the occupant H1. It is set in the form of a database. In the present embodiment, the value of the adjustment count α1Hn is zero.

The pattern PHn in the individual table storage unit 91 is obtained by adjusting (changing) the pattern P stored in the standard table storage unit 90 according to the preference of the occupant Hn. This adjustment is performed by the holding amount management unit 13 as will be described later.

  In the present embodiment, as shown in FIG. 4, the pressure control unit 11 has a pattern P (see Table 1) stored in the standard table storage unit 90 or a pattern PHn (stored in the individual table storage unit 91). With reference to Table 2), the target value A or the target value An determined based on the acceleration a is determined as the control target value of the internal pressure of the inflatable bag 5.

  In the present embodiment, the pressure control unit 11 refers to the pattern P (pattern P1 to pattern P5) to pattern PHn (pattern P1Hn to pattern P5Hn) selected by the holding amount management unit 13 based on the acceleration a in the left-right direction. . In the following, the operation in which the pressure control unit 11 selects the pattern P selected by the holding amount management unit 13 based on the lateral acceleration a or the like as a reference destination, or simply the pressure control unit 11 performs the lateral acceleration a or the like. The pattern P (pattern PHn) may be selected based on

  The pressure control unit 11 instructs the supply / discharge unit 3 to supply / discharge so that the internal pressure of the expansion / contraction bag 5 output from the pressure detection unit 6 becomes the control target value.

  In the present embodiment, if it is unknown which occupant H is the occupant H, the pressure control unit 11 determines a control target value based on the pattern P stored in the standard table storage unit 90, and supplies / discharges the unit 3. Command to supply / discharge.

  When the occupant H is specified as the occupant Hn, the pressure control unit 11 determines a control target value based on the pattern PHn stored in the individual table storage unit 91, and supplies / discharges to the supply / discharge unit 3. Is commanded.

  The identification of which occupant H is the occupant Hn is, for example, identification (for example, face authentication) using an in-vehicle camera (not shown), or the occupant H is the control unit 1 to determine which occupant Hn he is. This can be done by a memory sheet (not shown) which is an input panel for setting to the above.

  Even if the occupant H is specified as which occupant Hn, the pressure control unit 11 is standard if the pattern PHn corresponding to the occupant Hn is not stored in the individual table storage unit 91. Based on the pattern P stored in the table storage unit 90, the supply / discharge unit 3 is commanded to supply / discharge. Below, the case where the passenger | crew H is the passenger | crew Hn is illustrated and demonstrated.

  The operation determination unit 12 receives an instruction from the occupant Hn based on a change in internal pressure generated in the inflatable bag 5. In the present embodiment, the operation determination unit 12 acquires the internal pressure of the inflatable bag 5 from the pressure detection unit 6. The occupant Hn intentionally presses the expansion / contraction bag 5 in accordance with an instruction he / she wishes to perform, and changes the internal pressure of the expansion / contraction bag 5 in accordance with a predetermined variation pattern, thereby causing the control unit 1 to It is possible to give instructions.

  When the operation determination unit 12 acquires information on the predetermined pressure fluctuation pattern from the pressure detection unit 6, the operation determination unit 12 receives a target pressure change process corresponding to the predetermined pressure fluctuation pattern as an instruction from the occupant Hn. By the target pressure changing process, the control target value is changed, and the internal pressure of the inflatable bag 5 is increased or decreased. The predetermined pressure fluctuation pattern is stored in the fluctuation pattern storage unit 92. The operation determination unit 12 refers to a predetermined pressure variation pattern stored in the variation pattern storage unit 92 and compares the pressure variation pattern acquired from the pressure detection unit 6 to determine the instruction content from the occupant Hn. . This predetermined pressure fluctuation pattern will be described later.

  Hereinafter, the operation determination unit 12 includes a series of operations for acquiring information on a predetermined pressure fluctuation pattern about the internal pressure of the inflatable bag 5 detected by the pressure detection unit 6 from the pressure detection unit 6, The pressure detector 6 may be described as detecting a predetermined pressure fluctuation pattern.

  When the pressure detection unit 6 detects a predetermined pressure variation pattern, the operation determination unit 12 instructs the retention amount management unit 13 to perform a target pressure change process corresponding to the predetermined pressure variation pattern. By executing the target pressure changing process, the internal pressure of the inflatable bag 5 is adjusted, and the body can be held according to the preference of the occupant Hn. The target pressure changing process is performed based on the instruction content of the occupant H corresponding to the predetermined pressure fluctuation pattern.

  The target pressure changing process in the present embodiment is a process in which the holding amount management unit 13 generates the target value An from the target value A, or generates a new target value An from the current target value An and the current target value. The process includes a process of updating An to the new target value An and a process of storing the changed or updated target value An in the individual table storage unit 91 by the holding amount management unit 13.

  Hereinafter, the target value An will be exemplified and described in a comprehensive manner in the case of the target value A. Similarly, the case of the pattern P will be comprehensively described by exemplifying the pattern PHn. For example, the operation determining unit 12 includes both the process of generating the target value An from the target value A and the process of updating the target value An, and is simply described as updating the target value An. In the following description, when the target value An does not exist, the target value A is used instead of the current target value An.

  The holding amount management unit 13 acquires the lateral acceleration a obtained by the acceleration calculation unit 14. The holding amount management unit 13 determines the target pressure of the inflatable bag 5 based on the acceleration a in the left-right direction. Specifically, the holding amount management unit 13 selects a pattern PHn corresponding to the acceleration a in the left-right direction, and instructs the pressure control unit 11 to refer to the selected pattern PHn.

  The holding amount management unit 13 performs a target pressure changing process based on the operation command of the occupant Hn detected by the operation determination unit 12. In the present embodiment, the holding amount management unit 13 updates the target value An corresponding to the range including the acceleration a when the occupant Hn issues an operation command in the patterns P1Hn to P5Hn. The target value An is updated by updating the adjustment count α5Hn from the adjustment count α1Hn corresponding to the pattern P1Hn to the pattern P5Hn.

  The holding amount management unit 13 changes the adjustment count α5Hn from the adjustment count α1Hn of the pattern PHn corresponding to the acceleration a when the operation determination unit 12 receives an instruction from the occupant Hn. Explaining based on Table 2, for example, when the acceleration a acquired by the acceleration calculation unit 14 is 1.2, the adjustment count α3Hn corresponding to the pattern P3Hn is changed. Hereinafter, the adjustment count α1Hn to the adjustment count α5Hn are collectively referred to as the adjustment count αx. In the following, when the adjustment count αx is described, it means any one of the adjustment count α1Hn to the adjustment count α5Hn of the pattern PHn corresponding to the acceleration a.

  Hereinafter, a predetermined pressure variation pattern and operations of the operation determination unit 12 and the holding amount management unit 13 corresponding to the predetermined pressure variation pattern will be described.

  4 to 6, the pressure control unit 11 instructs the supply / exhaust unit 3 to supply air when the control target value of the internal pressure of the inflatable bag 5 is set to the target value An at a predetermined acceleration a. The change of the internal pressure of the inflatable bag 5 after this is shown, and the case where the internal pressure of the inflatable bag 5 reaches the target value An at time T is illustrated.

  FIG. 5 illustrates a case where the change corresponding to the predetermined pressure fluctuation pattern C1 occurs before the time T when the internal pressure of the inflatable bag 5 reaches the target value An. FIG. 6 illustrates a case in which the change corresponding to the predetermined pressure fluctuation pattern C2 is made after time T when the internal pressure of the inflatable bag 5 reaches the target value An. Information for detecting (specifying) the predetermined pressure fluctuation pattern C1 and the predetermined pressure fluctuation pattern C2 and the instruction content of the occupant Hn corresponding to these patterns are stored in the fluctuation pattern storage unit 92.

  The predetermined pressure fluctuation pattern C1 and the predetermined pressure fluctuation pattern C2 as shown in FIGS. 5 and 6 are operations in which the occupant Hn intentionally presses the inflatable bag 5 from the seat cover of the seat 4. It can be caused by performing.

  As shown in FIG. 5, when the pressure detection unit 6 detects a predetermined pressure fluctuation pattern C <b> 1 before the internal pressure of the inflatable bag 5 reaches the target value An, as shown in FIG. 5, the operation determination unit 12 sets the target value An. A command to change the target pressure to be reduced is commanded to the holding amount management unit 13. In response to this command, the holding amount management unit 13 updates the target value An to a smaller value. When the target value An is updated to a small value, the pressure control unit 11 instructs the supply / discharge unit 3 to supply / discharge (exhaust) with the updated target value An as a new control target value. Thereby, the internal pressure of the inflatable bag 5 decreases.

  The retention amount management unit 13 decreases the adjustment count αx by a predetermined value (for example, 10% as a decrease rate) in order to update the target value An to a small value.

  As shown in FIG. 6, when the pressure detection unit 6 detects a predetermined pressure fluctuation pattern C2 after the pressure in the inflating and deflating bag 5 reaches the target value An as shown in FIG. 6, the operation determination unit 12 sets the target value An. Command the holding amount management unit 13 to increase the target pressure. In response to this command, the holding amount management unit 13 updates the target value An to a large value. When the target value An is updated to a large value, the pressure control unit 11 instructs the supply / exhaust unit 3 to supply / discharge (supply / supply) with the updated target value An as a new control target value. Thereby, the internal pressure of the inflatable bag 5 increases.

  The retention amount management unit 13 increases the adjustment count αx by a predetermined value (for example, 5% as an increase rate) in order to update the target value An to a large value. Note that the rate of change (decrease rate, increase rate) between the case where the adjustment coefficient αx is decreased and the case where the adjustment coefficient αx is increased can be set to the same ratio.

  A predetermined pressure fluctuation pattern will be described. First, a method for detecting the predetermined pressure fluctuation pattern C1 will be described. In the present embodiment, definitions of detection threshold value ΔP 0, detection threshold value ΔP 1, time τ 0, time τ 1, which will be described later, and these values are stored in the fluctuation pattern storage unit 92.

  In FIG. 7, as in FIG. 5, after the pressure control unit 11 instructs the supply / exhaust unit 3 to supply air, a predetermined pressure fluctuation pattern C <b> 1 is obtained before the internal pressure of the inflatable / deflating bag 5 reaches the target value An. The case where the change corresponding to is shown is illustrated. In FIG. 7, the case where the change of the internal pressure of the inflatable bag 5 is acquired for every continuous section of unit time length Δt (for example, 1 second) is illustrated. The approximate curve L approximates a plot of the internal pressure of the inflatable bag 5 obtained continuously.

  In FIG. 7, the n-th and m-th sections (where m is an integer equal to or greater than n + 2) after the pressure control section 11 commands the supply / exhaust section 3 to supply air are shown as sections Δtn and Δtm. In addition, the internal pressures of the inflatable bag 5 corresponding to the start of the section Δtn and the section Δtm are represented by the pressure Pn and the pressure Pm, respectively. In FIG. 7, section Δtn + 1 and section Δtm + 1 are sections following section Δtn and section Δtm, respectively. The pressure Pn + 1 and the pressure Pm + 1 are the internal pressures of the inflating and deflating bag 5 corresponding to the start of the section Δtn + 1 and the section Δtm + 1, respectively.

  In the present embodiment, the operation determination unit 12 starts detecting the operation of the occupant Hn when the difference ΔPn obtained by subtracting the pressure Pn from the pressure Pn + 1 detected by the pressure detection unit 6 is equal to or greater than the detection threshold value ΔP0. Also, measurement of the operation time τ is started. The operation time τ is a time length from when the operation of the occupant Hn is started (operation detection is started) to when the operation is ended (operation detection is ended). Note that the operation time τ is at least twice as long as the unit time length Δt.

  Hereinafter, the state where the detection of the operation of the occupant Hn is started may be described as the operation start being effective. Moreover, starting the detection of the operation of the occupant Hn may be described as enabling the operation start. Further, the state where the operation start is not valid may be described as the operation start is invalid. Further, setting the operation start invalid is sometimes described as invalidating the operation start.

  Furthermore, when the difference ΔPm obtained by subtracting the pressure Pm + 1 from the pressure Pm detected by the pressure detection unit 6 becomes greater than or equal to the detection threshold ΔP1 within the operation time τ within the time τ1, the operation determination unit 12 detects the completion of the operation. That is, the operation determination unit 12 determines that the pressure detection unit 6 has detected a predetermined pressure fluctuation pattern C1. As a result, the operation determination unit 12 instructs the holding amount management unit 13 to perform a target pressure changing process for reducing the target value An. The detection threshold ΔP1 is preferably set to a value smaller than the detection threshold ΔP0.

  The detection threshold value ΔP0 is preferably set to a value larger than the maximum pressure change (for example, pressure change Pmax in FIG. 7) generated by the pressure change when the occupant Hn is not operated. Thereby, it can avoid detecting the pressure change at the time of operation of the passenger | crew Hn accidentally that it is the operation start of the passenger | crew Hn.

  The detection of the operation completion is preferably performed when the operation time τ exceeds the time τ0 (however, the time τ0 is smaller than the time τ1). That is, if the operation time τ, which is the time from the operation start detection to the operation completion detection, exceeds the time τ0 and does not reach the time τ1 (time τ0 <operation time τ <time τ1), the operation of the occupant Hn is It is preferable that the operation determination unit 12 determines that it has been performed. Accordingly, it is possible to avoid erroneously detecting that a short time pressure change of time τ 0 or less due to vibration or the like that occurs when the vehicle 200 travels is the start of the operation of the occupant Hn. Hereinafter, determining that the operation of the occupant Hn has been performed may be referred to as confirming the operation.

  In this embodiment, when the operation is confirmed when time τ0 <operation time τ <time τ1, the operation is confirmed when operation time τ ≦ time τ0 or when time τ1 ≦ operation time τ. The operation determination unit 12 invalidates the operation start detection (the operation determination unit 12 determines that the operation by the occupant Hn has not been performed).

  Next, a method for detecting the predetermined pressure fluctuation pattern C2 will be described. The detection method of the predetermined pressure fluctuation pattern C2 differs from the detection method of the predetermined pressure fluctuation pattern C1 in that the detection threshold value ΔP1 and the detection threshold value ΔP0 are preferably set to approximately the same value. This is the same as the detection method of the predetermined pressure fluctuation pattern C1.

  A process performed by the vehicle seat control apparatus 100 for each section of the unit time length Δt will be described with reference to the flowchart of FIG. The vehicle seat control apparatus 100 executes all the steps shown in the flowchart of FIG. 8 for each section.

  Hereinafter, each step in the flowchart is described as # 123 or the like. The number immediately after the # symbol corresponds to the serial number of each step. For example, when describing as # 123, it indicates the 123rd step (step # 123).

  Hereinafter, a series of processing from # 102 to # 107 is referred to as periodic processing.

  When the vehicle seat control apparatus 100 starts operating, the control unit 1 determines whether or not the periodic process has been executed within the current section, and waits if the periodic process has been executed (# 101, Yes). If the periodic process is not executed (# 101, No), the process proceeds to # 102.

  In # 102, the vehicle seat control apparatus 100 acquires various types of information. Specifically, the pressure detection unit 6 acquires the internal pressure of the expansion / contraction bag 5. Further, the acceleration calculation unit 14 acquires information related to acceleration and route information of the navigation unit 7 from the sensor 81. When # 102 is executed, the process proceeds to # 103.

  In # 103, the acceleration calculation unit 14 obtains the acceleration a in the left-right direction and passes it to the holding amount management unit 13. When # 103 is executed, the process proceeds to # 104.

  In # 104, the operation determination unit 12 detects the operation of the occupant Hn. Details of # 104 will be described later. When # 104 is executed, the process proceeds to # 105.

  In # 105, the holding amount management unit 13 selects a pattern PHn based on the lateral acceleration a and the like, and instructs the pressure control unit 11 to refer to the selected pattern PHn. By this command, the pressure control unit 11 can select the pattern PHn based on the acceleration a in the left-right direction. When # 105 is executed, the process proceeds to # 106.

  In # 106, the holding amount management unit 13 changes the target value An corresponding to the pattern PHn selected by the holding amount management unit 13 based on the acceleration a in the left-right direction or the like based on an instruction from the occupant Hn. When # 106 is executed, the routine proceeds to # 107.

  In # 107, the pressure control unit 11 instructs the supply / discharge unit 3 to supply / discharge based on the current internal pressure of the inflatable bag 5 and the target value An. Executing # 106 returns to # 101.

  Details of # 104 will be described with reference to the flowchart of FIG. Hereinafter, # 104 when detecting the predetermined pressure fluctuation pattern C1 will be described.

  When # 104 is started, the operation determination unit 12 obtains a difference ΔPn (ΔP) in # 201. When # 201 is executed, the process proceeds to # 202.

  In # 202, the operation determination unit 12 determines whether the operation start is valid. If the operation start is valid (# 203, Yes), the process proceeds to # 213. If the operation start is invalid (# 203, No), the process proceeds to # 203.

  In # 203, the operation determination unit 12 determines whether the difference ΔP is larger than the detection threshold value ΔP0. When the difference ΔPn is larger than the detection threshold value ΔP0 (# 204, Yes), the process proceeds to # 204. If the difference ΔP is smaller than the detection threshold value ΔP0 (# 204, No), the process ends.

  In # 204, the operation determination unit 12 validates the operation start. When # 204 is executed, the process proceeds to # 205.

  In # 205, the operation determination unit 12 measures the operation time τ. When # 205 is executed, the process ends.

  In # 213, it is determined whether or not the difference ΔPm is greater than or equal to the detection threshold value ΔP1. If the difference ΔPm is greater than or equal to the detection threshold value ΔP1 (# 213, Yes), the process proceeds to # 224. If the difference ΔPm is less than the detection threshold value ΔP1 (# 213, No), the process proceeds to # 214.

  In # 214, it is determined whether or not the operation time τ is smaller than the time τ1. If the operation time τ is smaller than the time τ1 (# 214, Yes), the process ends. Otherwise (# 214, No), the process proceeds to # 215.

  In # 215, the operation determination unit 12 validates the operation start. When # 215 is executed, the process proceeds to # 216.

  In # 216, the operation determination unit 12 ends the measurement of the operation time τ and clears the operation time τ. Executing # 216 ends.

  In # 224, whether or not the operation time τ exceeds the time τ0 and is smaller than the time τ1 is determined whether or not it is equal to or larger than the detection threshold value ΔP1. If the operation time τ exceeds the time τ0 and is smaller than the time τ1 (# 224, Yes), the process proceeds to # 225. Otherwise (# 224, No), the process proceeds to # 215.

  In # 225, it is determined that the time t when the operation time τ is determined has not reached the time T. If the time t has not reached the time T (# 225, Yes), the process proceeds to # 236. If the time t reaches the time T or exceeds the time T (# 225, No), the process proceeds to # 226.

  A series of steps from # 226 to # 229 is a process in which the holding amount management unit 13 increases the adjustment count αx by a predetermined value in order to update the target value An to a large value. On the other hand, a series of steps from # 236 to # 239 is a process in which the holding amount management unit 13 decreases the adjustment count αx by a predetermined value in order to update the target value An to a small value.

  In the present embodiment, in each of the series of steps from # 226 to # 229 and the series of steps from # 236 to # 239, the number of requests for increasing or decreasing the adjustment count αx is counted (# 226, # 236, respectively). Then, the process proceeds to the next step (# 227, # 237).

  If the count does not exceed the predetermined number (No in # 227, No in # 237), the process proceeds to # 215, and no request for increasing or decreasing the adjustment count αx is made. Note that the count of requests for increasing or decreasing the adjustment coefficient αx is maintained.

  If the count exceeds the predetermined number (Yes in # 227, Yes in # 237), the process proceeds to the next step (# 228, # 238), and the adjustment count αx is increased (# 228) or decreased (# 238). The operation determination unit 12 makes a request to the retention amount management unit 13. When the request is made, the process proceeds to the next step (# 229, # 239), and the count of the request for increasing or decreasing the adjustment count αx is cleared.

  As described above, it is possible to provide a vehicle seat control apparatus capable of appropriately performing a support state change instruction.

[Another embodiment]
(1) In the said embodiment, the case where the pattern PHn for every passenger | crew Hn was memorize | stored in the individual table memory | storage part 91 was illustrated.

  This pattern PHn can be further subdivided and stored in accordance with the state and type of the road on which the vehicle 200 travels. Thereby, it becomes possible to adjust the internal pressure of the inflatable bag 5 according to the state and type of the road on which the vehicle 200 travels, and the comfort of the passenger Hn can be improved.

  Examples of the state and type of the road on which the vehicle 200 travels include a general road (paved road), a highway, a mountain road, a gravel road, and the like. Table 4 shows a case where subdivided patterns PHn corresponding to general roads (paved roads), highways, and mountain roads are stored as patterns T_N_Hn, patterns T_H_Hn, and patterns T_M_Hn for each occupant Hn. ing. Information for specifying the state and type of the road on which the vehicle 200 travels can be acquired from the navigation unit 7 by the holding amount management unit 13, for example.

(2) In the above embodiment, when the constant C, which is an example of the initial holding pressure, is common throughout the patterns PHn, and the holding amount management unit 13 updates the target value An, the adjustment count αx is set to a predetermined value. The case of decreasing or increasing by the value of is described as an example.

  However, a configuration in which the constant C is changed according to the characteristics (for example, weight) of the occupant Hn can be taken. For example, the weight of the large occupant Hn is heavy, and the weight of the small occupant Hn is light. Therefore, when the large occupant Hn is seated on the seat 4, a larger force (centrifugal force) is generated even when the acceleration a is the same in the left-right direction than when the small occupant Hn is seated on the seat 4. Join occupant Hn. Therefore, when supporting a large occupant Hn, it may be preferable to set the internal pressure of the inflatable bag 5 larger than when supporting a small occupant Hn.

  For example, in the case of supporting a large occupant Hn, a constant C in the case of supporting a large occupant Hn is set as the constant C so as to set the internal pressure of the inflatable bag 5 larger than in the case of supporting a small occupant Hn. Ca and a constant Cb for supporting a small passenger Hn can be determined. In this case, the constant Cb is set larger than the constant Ca. The constant Ca and the constant Cb can be stored separately in the individual table storage unit 91 as the pattern PHn of the large occupant Hn and the pattern PHn of the small occupant Hn, or the constant C of the pattern PHn for each occupant Hn. The individual table storage unit 91 can be changed.

  The determination as to whether the occupant Hn is a large occupant Hn or a small occupant Hn is obtained, for example, by acquiring the amount of change in the internal pressure of the inflatable bag 5 when the occupant Hn is seated on the seat 4. 1 can be determined based on the amount of change. When the amount of change in the internal pressure of the inflatable bag 5 when the occupant Hn is seated on the seat 4 is large, the control unit 1 determines that the occupant Hn is a large occupant Hn. It can be determined that this is the passenger Hn. Alternatively, a weight sensor may be provided in the seat 4, and the weight of the occupant Hn may be acquired from the weight sensor, and the control unit 1 may determine that the occupant is a large or small occupant Hn based on the weight.

(3) In the above embodiment, when the constant C, which is an example of the initial holding pressure, is common throughout the patterns PHn, and the holding amount management unit 13 updates the target value An, the adjustment count αx is set to a predetermined value. The case of decreasing or increasing by the value of is described as an example.

  However, the target value An may be updated by adding or subtracting a predetermined value to or from each target value An instead of decreasing or increasing the adjustment coefficient αx by a predetermined value.

(4) In the above embodiment, if time τ0 <operation time τ <time τ1, the operation determination unit 12 determines that the operation of the occupant Hn has been performed, and otherwise, the operation by the occupant Hn is not performed. A case where the operation determination unit 12 determines that the operation has been performed is illustrated.

  However, the operation determination unit 12 may also determine other information to determine whether an operation by the occupant Hn has been performed. For example, when the acceleration calculation unit 14 detects a predetermined acceleration fluctuation pattern caused by vibration associated with travel of the vehicle 200, the operation determination unit 12 can detect the operation of the occupant Hn even when the detection of the occupant Hn operation is started. You may comprise so that it may judge that operation by Hn was not performed.

  Further, when the pressure detection unit 6 detects a predetermined pressure fluctuation pattern caused by vibration associated with the travel of the vehicle 200, the operation determination unit 12 can detect the operation of the occupant Hn even when the operation detection of the occupant Hn is started. You may comprise so that it may judge that operation by Hn was not performed.

  When the vehicle 200 vibrates or turns a curve, the occupant's posture may change, and the pressure variation may occur in the inflatable bag 5. However, as described above, even when the operation determination unit 12 starts detecting the operation of the occupant Hn based on a predetermined acceleration fluctuation pattern or pressure fluctuation pattern caused by the vibration accompanying traveling, the operation by the occupant Hn is performed. By determining that it has not been performed, it is possible to prevent the target pressure changing process from being erroneously executed based on the vibration of the vehicle 200 or the like.

(5) In the above embodiment, the case where the pressure control unit 11 selects the pattern PHn based on the acceleration a in the left-right direction has been described.

  However, the pressure control unit 11 may take a configuration that refers to a control target value of the internal pressure of the inflatable / deflection bag 5 set regardless of the acceleration a. In this case, for example, the holding amount management unit 13 performs a target pressure change process (a process of changing the control target value of the internal pressure of the inflatable bag 5) based only on the operation command of the occupant Hn detected by the operation determination unit 12. I do.

(6) In the above embodiment, the operation determination unit 12 starts detecting the operation of the occupant Hn when the difference ΔPn obtained by subtracting the pressure Pn from the pressure Pn + 1 detected by the pressure detection unit 6 is equal to or greater than the detection threshold ΔP0. explained. Moreover, the case where measurement of the operation time τ is started has been described. Furthermore, when the operation time τ is within the time τ1, and the difference ΔPm obtained by subtracting the pressure Pm + 1 from the pressure Pm detected by the pressure detection unit 6 becomes greater than or equal to the detection threshold ΔP1, the operation determination unit 12 detects the operation completion. did.

  However, the start of detection of the operation of the occupant Hn, the start of measurement of the operation time τ, and the detection of completion of the operation performed by the operation determination unit 12 are not limited to the above modes. For example, a change in the internal pressure of the inflatable bag 5 when the same control as the internal pressure control of the inflatable bag 5 to be performed is performed is stored in advance and used as a reference. Then, the pressure Pn in the specific section Δtn in the current control is compared with the pressure in the reference section (hereinafter referred to as the reference pressure Prn) corresponding to the current section Δtn, and the pressure Prn is calculated from the pressure Pn. When the subtracted difference ΔPrn is equal to or greater than the detection threshold value ΔPr0, detection of the operation of the occupant Hn can be started. In addition, when the detection is started, measurement of the operation time τ can also be started. Similarly, the pressure Pm in the specific section Δtm in the current control is compared with the pressure in the reference section (hereinafter referred to as the reference pressure Prm) corresponding to the current section Δtm, and the pressure Pm to the pressure Prm are compared. When the difference ΔPrm obtained by subtracting is less than the detection threshold value ΔPr1, it is possible to detect the completion of the operation of the occupant Hn.

  Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

  The present invention can be applied to a vehicle seat control device.

DESCRIPTION OF SYMBOLS 1: Control part 3: Supply / exhaust part 4: Seat 4a: Seat 4b: Seat 4c: Seat 4d: Seat 5: Inflatable bag 6: Pressure detection part 11: Pressure control part (control part)
12: Operation determination unit (control unit)
13: Retention amount management unit (control unit)
14: Acceleration calculation unit (acceleration detection unit)
51: First inflatable bag (inflatable bag)
52: Second inflatable bag (inflatable bag)
53: Third inflatable bag (inflatable bag)
54: Fourth inflatable bag (inflatable bag)
55: Fifth inflatable bag (inflatable bag)
56: Sixth inflatable bag (inflatable bag)
61: P sensor (pressure detector)
62: P sensor (pressure detector)
81: Sensor (acceleration detection unit)
100: Vehicle seat control apparatus 200: Vehicle A: Target value (target pressure)
A1: Target value (target pressure)
An: Target value (target pressure)
C: constant C1: pressure fluctuation pattern C2: pressure fluctuation pattern H: occupant H1: occupant Hn: occupant P: pattern PHn: pattern a: acceleration αx: adjustment count (section parameter)

Claims (6)

An inflatable bag that supports the body of an occupant seated in a vehicle seat disposed inside the vehicle;
A supply / discharge portion for supplying and discharging fluid to the inflatable bag;
A pressure detector for detecting the pressure in the inflatable bag;
A control unit for determining a target pressure in the inflatable bag,
The said control part is a vehicle seat control apparatus which performs the target pressure change process which changes the said target pressure, when the said pressure detection part detects a predetermined pressure fluctuation pattern. An acceleration detector for detecting the acceleration of the vehicle;
The vehicle seat control device according to claim 1, wherein the control unit determines the target pressure according to the acceleration. The target pressure is determined by multiplying an initial holding pressure which is a constant by a parameter determined corresponding to the acceleration,
The parameter is a set of section parameters determined corresponding to each section of a plurality of acceleration sections obtained by dividing the acceleration into predetermined acceleration ranges.
The vehicle seat control device according to claim 2, wherein the target pressure changing process is an operation of changing a section parameter corresponding to the acceleration when the predetermined pressure fluctuation pattern is detected.   The said control part reduces the said target pressure, when the said predetermined pressure fluctuation pattern is detected before the pressure in the said expansion / contraction bag reaches | attains the said target pressure. The vehicle seat control device described.   5. The control unit according to claim 1, wherein the control unit increases the target pressure when the predetermined pressure fluctuation pattern is detected after the pressure in the inflation / deflation bag reaches the target pressure. 6. The vehicle seat control device described. A storage unit storing the predetermined pressure fluctuation pattern;
The predetermined pressure fluctuation pattern corresponds to the pressure fluctuation pattern when the inflating and deflating bag is intentionally pressed according to the instruction of the occupant,
The said control part performs the said target pressure change process based on the said predetermined pressure fluctuation pattern, when the said pressure detection part detects the said predetermined pressure fluctuation pattern memorize | stored in the said memory | storage part. The vehicle seat control device according to any one of the above.

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