JP2018052385A - Vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control device capable of suppressing damage to a vibration generating part while transmitting as strong vibration as possible to a seated person.SOLUTION: An appropriate upper limit value can be set by setting a first upper limit value LIM1 for an input signal to a vibration generating part 2, according to a load G applied to the vibration generating part 2 when a person is seated. When the load G is relatively heavy, the first upper limit value LIM1 is decreased to suppress damage due to excessive vibration, while when the load G is relatively light, the first upper limit value LIM1 is increased to allow intensity of vibration to be secured more easily. Thus, setting the appropriate first upper limit LIM1 according to the load G can suppress damage of the vibrating part 2 while transmitting as strong vibration as possible to the seated person.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vibration control device.

  2. Description of the Related Art Conventionally, there has been proposed a vehicle seat including vibration generating means provided on a seat (seat) and vibration control means for controlling the vibration generating means (see, for example, Patent Document 1). In the conventional vehicle seat described in Patent Document 1, the vibration generating means is vibrated when there is a risk of collision with another vehicle. Furthermore, this vehicle seat detects the pressure applied to the seat when the passenger is seated, and increases the vibration intensity when the pressure is low, and decreases the vibration intensity when the pressure is high. It is configured so that vibration of appropriate strength is transmitted to the passenger.

JP 2007-137387 A

  By the way, it is conceivable that a warning is generated by generating vibration not only when an approach to another vehicle or a departure from the lane of the own vehicle is detected, but also when a sleeper of a seated person is detected. As described above, when an alarm by vibration is generated for the carelessness of the passenger, it is preferable to increase the amplitude as the degree of carelessness is higher.

  However, when the amplitude is increased according to the degree of carelessness, a device such as a vibrator constituting the vibration generating means may be damaged by excessive vibration. Furthermore, the amplitude of the excessive vibration that damages the vibration generating means varies depending on which seated person is seated, that is, the ease of damage (degree of damage induction) varies depending on the seated person. Therefore, if the upper limit of the amplitude of the vibration generating means is set high, the vibration generating means may be damaged by excessive vibration when a seated person with a high degree of damage induction sits down. On the other hand, if the upper limit of the amplitude of the vibration generating means is set low, the amplitude must be reduced even when a seated person with a low degree of damage induction sits down, and the intensity of vibration transmitted to the seated person is more than necessary. There is a possibility of being weakened.

  Therefore, an object of the present invention is to provide a vibration control device that can transmit vibration as strong as possible to a seated person and suppress damage to the vibration generating unit.

  In order to solve the above-described problems and achieve the object, a vibration control device according to the present invention includes a vibration generating unit provided in a seat and a carelessness detection unit that detects a carelessness of a seated person. And a control unit that controls the magnitude of an input signal to the vibration generating unit, and the control unit is a degree of damage induction that is a degree of damage to the vibration generating unit caused by the seated person sitting And an upper limit value of the input signal is set according to the degree of damage induction, and the magnitude of the input signal is determined according to the degree of carelessness to be equal to or lower than the upper limit value. It is characterized by that.

It is a block diagram which shows the outline of the vibration control apparatus which concerns on the Example of this invention. It is a perspective view which shows the seat in which the vibration generation part of the said vibration control apparatus was provided. It is a perspective view which shows the said vibration generation part. It is sectional drawing which shows the said vibration generation part. It is a graph for the control part of the said vibration control apparatus to set the upper limit of the magnitude | size of the input signal to the said vibration generation part. It is a graph for the said control part to determine the magnitude | size of the input signal to the said vibration generation part. It is a flowchart which shows an example of the amplitude determination process which the said control part performs.

  Embodiments of the present invention will be described below. A vibration control device according to an embodiment of the present invention controls a vibration generation unit provided in a seat, a carelessness detection unit that detects a carelessness level of a seated person, and a magnitude of an input signal to the vibration generation unit. A control unit. The control unit obtains a damage induction degree that is easy to damage the vibration generating part due to the seated person sitting, sets an upper limit value of the input signal according to the damage induction degree, and is below the upper limit value The magnitude of the input signal is determined according to the degree of carelessness.

  An appropriate upper limit value can be set by setting the upper limit value of the magnitude of the input signal to the vibration generating unit according to the degree of damage induction. That is, when a seated person with a high degree of damage induction sits down, it is easy to suppress damage due to excessive vibration by lowering the upper limit value. Further, when a seated person with a low degree of damage induction sits down, it is easy to ensure the strength of vibration by increasing the upper limit value. In this way, by setting an appropriate upper limit value for the magnitude of the input signal to the vibration generating unit based on the degree of damage induction, it is possible to transmit the strongest vibration to the seated person as much as possible and suppress damage to the vibration generating unit. can do.

  The degree of damage induction preferably includes a load applied to the vibration generating portion when the seated person is seated. Thereby, the upper limit value of the magnitude of the input signal to the vibration generating unit can be set to a more appropriate value. That is, as the load applied to the vibration generating portion increases, damage due to excessive vibration is likely to occur. Therefore, an appropriate value can be obtained by setting the upper limit value according to the load. At this time, the control unit may set the upper limit value lower as the load increases.

  An input unit for inputting the degree of damage induction may be further provided, or a measurement unit for measuring the degree of damage induction may be further provided. Thereby, the degree of damage induction can be acquired as appropriate.

  The carelessness detection unit preferably detects the sleepiness of the seated person as the carelessness. Thereby, when drowsiness is detected, the drowsiness can be easily eliminated by transmitting vibration to the seated person.

  The carelessness detection unit provided in the mobile body may detect a shift from the normal travel state of the mobile body as the carelessness degree. Thereby, attention can be alerted about the deviation | shift from the normal running state of a moving body by transmitting a vibration to a seated person. Note that the normal running state means, for example, running at a normal speed, no meandering or the like (in the case of a vehicle, no deviation from the lane), and a sufficient distance from other moving objects or installations on the road. It means a secured state. If at least one of these conditions is not satisfied, a shift in the normal running state may be detected.

  A vibration control device according to another embodiment of the present invention includes a vibration generation unit provided in a seat of a moving body, and a control unit that controls the magnitude of an input signal to the vibration generation unit. The magnitude of the input signal is determined according to the volume of the acoustic device provided in the moving body, and an upper limit value of the magnitude of the input signal is set when the volume is equal to or higher than a predetermined value. That is, the vibration generating unit generates vibration in conjunction with the acoustic device in order to make the seated person feel the beat of music. At this time, normally, the magnitude of the input signal is determined according to the volume to transmit the strongest vibration possible to the seated person, and the upper limit of the magnitude of the input signal when the volume of the sound device becomes too high. By setting, damage to the vibration generating part can be suppressed.

  It is preferable that at least one vibration generating portion is provided in each of the seating portion and the backrest portion of the seat. At this time, if an upper limit value of the magnitude of the input signal is set according to the position where the vibration generating unit is provided, a more appropriate upper limit value can be obtained.

  A vibration control method according to an embodiment of the present invention includes a carelessness detection step of detecting a carelessness level of a seated person on a seat, and a control step of controlling the magnitude of an input signal to a vibration generation unit. . In the control process, the degree of damage induction, which is easy to damage the vibration generating part due to the seated person sitting, is acquired, and the upper limit value of the input signal is set according to the degree of damage induction, and below the upper limit value. The magnitude of the input signal is determined according to the degree of carelessness. According to such a method, as strong vibration as possible can be transmitted to the seated person as described above, and damage to the vibration generating portion can be suppressed.

  Such a vibration control method may be executed by a computer.

  Examples of the present invention will be specifically described below. As schematically shown in FIG. 1, the vibration control device 1 according to the present embodiment includes a vibration generating unit 2, an inattention level detecting unit 3, an input unit 4, a prediction information acquiring unit 5, and a control unit 6. And provided in a vehicle as a moving body.

  The vibration generator 2 is provided in a vehicle seat (driver's seat) S as shown in FIG. The vibration generating unit 2 includes a first seating portion vibrator 21 embedded on one side (right side) of the seating portion SH1 of the seat SH and a second seating embedded on the other side (left side) of the seating portion SH1. A first backrest vibrator 23 embedded in one side of the seat SH in the vehicle width direction of the backrest section SH2 of the seat SH, a second backrest vibrator 24 embedded in the other side of the backrest section SH2, Have

  The seating part vibrators 21 and 22 are provided so as to vibrate so as to be substantially orthogonal to the upper surface of the seating part SH1 (that is, the direction along the vertical direction is the vibration direction). The backrest vibrators 23 and 24 are provided so as to vibrate so as to be substantially orthogonal to the front surface of the backrest SH2 (that is, the direction along the traveling direction of the vehicle is a vibration direction).

  Here, the detail of the vibration units 21-24 is demonstrated based on FIG. 4 is a cross-sectional view showing a cross section taken along the line V1-V1 in FIG.

  The vibration units 21 to 24 are those in which a magnetic circuit 220 is accommodated in a case 210. In the case 210, the opening on one end side of the short cylindrical frame 211 is closed by a circular first plate wall 213 in which a plurality of through holes 212 are provided in the center, and the opening on the other end side is a circular second. It is blocked by the plate wall 214. FIG. 3A shows the vibration units 21 to 24 viewed from the first plate wall 213 side where the through-hole 212 is provided, and FIG. 3B shows the vibration units 21 to 21 viewed from the opposite side. 24 is shown.

  A cylindrical bobbin 215 is erected from the approximate center of the first plate wall 213 toward the second plate wall 214 so as to surround the plurality of through holes 212, and a voice coil 216 is provided on the outer periphery of the bobbin 215. ing. As described above, the voice coil 216 is fixed to the first plate wall 213 via the bobbin 215. The plurality of through holes 212 are provided in a region 213 a corresponding to the inside of the voice coil 216 in a plan view when viewed from a direction intersecting the first plate wall 213.

  Each of the magnetic circuits 220 includes a ring-shaped plate 221 and a magnet 222 and a disk-shaped yoke 223. The plate 221 and the magnet 222 are arranged coaxially with a gap with respect to the voice coil 216. The plate 221, that is, the magnetic circuit 220 is supported on the inner wall surface of the cylindrical frame 211 via the damper 230 so as to vibrate in the contact / separation direction D <b> 1 with respect to the first plate wall 213.

  When an AC signal is applied to the voice coil 216, the magnetic circuit 220 vibrates in the contact / separation direction D1 with respect to the first plate wall 213. Further, the case 210 also vibrates due to the reaction through the vibration damper 230. As described above, in the vibration units 21 to 24, relative vibration is generated between the case 210 and the magnetic circuit 220 by energizing the voice coil 216. Due to this relative vibration, the vibration units 21 to 24 vibrate together with the case 210. Further, in the case 210, the first plate wall 213 to which the voice coil 216 that receives the reaction from the magnetic circuit 220 is fixed vibrates locally. Sound is generated by the vibration of the first plate wall 213. As described above, the vibration units 21 to 24 vibrate and emit the entire case 210 by the relative vibration caused by energization of the voice coil 216 between the case 210 and the magnetic circuit 220.

  When such vibrators 21 to 24 vibrate in a state where a load along the vibration direction is applied, the vibrators 21 to 24 are easily damaged by excessive vibration. In addition, as the load increases, damage is more likely to occur even at a small amplitude. That is, the load applied to the vibration generating unit 2 when the seated person is seated becomes the degree of damage induction.

  The carelessness detection unit 3 detects the intensity of sleepiness of the seated person as the carelessness of the seated person of the seat SH. The carelessness detection unit 3 may be provided, for example, on a steering wheel and may measure the heart rate and body temperature of a seated person, or may measure the frequency of blinks by imaging the eyes of the seated person. May be. The occupant's heart rate, body temperature, and blink frequency can be used to estimate the occupant's drowsiness intensity, and any of these measurements may be detected as inattention or It may be detected as a degree of carelessness based on a composite determination of the measured values.

  The input unit 4 is, for example, a touch panel arranged on an instrument panel of a vehicle, and may be a display screen of a car navigation system. The input unit 4 displays an image for inputting the weight of the seated person and obtains information on the weight of the seated person. Note that information including the weight of the seated person may be registered in advance, and a screen for selecting the seated person may be displayed on the input unit 4 so that the weight information can be acquired by selecting the seated person.

  As the weight of the seated person increases, the load applied to the vibrators 21 to 24 provided on the seat increases, and the vibration generating unit 2 is easily damaged. That is, the input unit 4 acquires the degree of damage induction. The load applied to the vibrators 21 to 24 depends not only on the weight of the seated person but also on the arrangement of the vibrators 21 to 24 and the reclining angle of the backrest. The load applied to the backrest vibrators 23 and 24 is small with respect to the load applied to the seating section vibrators 21 and 22, and the lower the backrest part, the smaller the load applied to the seating section vibrators 21 and 22 and the backrest vibrator 23. , 24 is increased in load. Therefore, by multiplying the seated person's weight by a predetermined coefficient corresponding to the arrangement of the vibrators 21 to 24 and the reclining angle, the load applied to each vibrator 21 to 24 is calculated, and this load is used as the degree of damage induction. Also good.

  The prediction information acquisition unit 5 acquires prediction information for predicting acceleration after a predetermined time of the vehicle. For example, the prediction information acquisition unit 5 includes a plurality of cameras provided to image the surroundings of the vehicle, It is configured by a radar or the like that measures the distance from an object (another vehicle, a pedestrian, an installation on the road surface, etc.) The prediction information acquisition part 5 acquires the approach condition of the own vehicle and a peripheral thing as prediction information.

  The above-mentioned “predetermined time” is longer than the time necessary for controlling the vibration of the vibration generating unit 2 to be equal to or less than the second upper limit value LIM2 set as described later after the acceleration is predicted. It only has to be long. At this time, it is preferable that the “predetermined time” is as short as possible within a range longer than the above required time because an accurate predicted value can be obtained if the acceleration is predicted based on the immediately preceding information as much as possible. The required time depends on the processing speed of the control unit 6, the reaction speed of other devices, the signal transmission speed between devices, etc., so it is not unambiguous and should be an appropriate value according to various conditions. Find it experimentally.

  The control unit 6 controls the magnitude of the input signal to the vibration generating unit 2 and may be an appropriate CPU (central processing unit) provided in the vehicle, for example. A device having other functions such as a meter ECU or a CPU of a car navigation system may be used as the control unit 6 of the vibration control device 1 or a CPU dedicated to the vibration control device 1 may be used as the control unit 6.

  The control unit 6 acquires the damage induction degree (load) from the input unit 4, and sets the first upper limit value LIM1 of the magnitude of the input signal according to the damage induction degree. That is, the relationship between the first upper limit value LIM1 as shown in FIG. 5 and the load G applied to the vibration generating unit 2 is stored in advance in an appropriate storage unit, and the first upper limit value is based on the acquired load G. LIM1 is determined. In the present embodiment, it is assumed that the first upper limit value LIM1 and the load G have a primary relationship.

  The control unit 6 determines the magnitude of the input signal to the vibration generating unit 2 according to the inattention level by acquiring the inattention level from the inattention level detection unit 3. Note that, as described above, the measurement unit that measures heart rate, body temperature, blink frequency, etc. may calculate the inattention level (that is, the measurement unit alone functions as the inattention level detection unit). The measurement result may be transmitted to the control unit 6, and the control unit 6 may calculate the inattention level (that is, the measurement unit and the control unit 6 function as an inattention level detection unit).

  In the present embodiment, the magnitude of the input signal means a voltage applied to the vibrators 21 to 24. At this time, the control unit 6 increases the amplitude of the vibration generating unit 2 in order to make it easier to eliminate drowsiness as the degree of carelessness is higher (stronger drowsiness). That is, the relationship between the carelessness CL and the input signal magnitude SG as shown in FIG. 6 is stored in advance in an appropriate storage unit, and the input signal magnitude SG is determined based on the acquired carelessness CL. decide.

  At this time, in the range where the magnitude SG of the input signal is smaller than the first upper limit value LIM1, the carelessness CL and the magnitude SG of the input signal are substantially proportional, and the magnitude SG of the input signal is the first upper limit value. It is assumed that the magnitude SG of the input signal is substantially constant even when the carelessness CL is larger than the value LIM1.

  The control unit 6 acquires prediction information from the prediction information acquisition unit 5 and predicts the acceleration of the vehicle based on the prediction information. For example, when the vehicle is approaching suddenly in front of the surrounding object, the acceleration due to sudden braking is predicted, and when the other vehicle is approaching from behind, the acceleration due to sudden acceleration is predicted. When the host vehicle is suddenly approaching a peripheral object on one side and in the front in the vehicle width direction, the acceleration due to the sudden turning is predicted.

  When the predicted acceleration is equal to or greater than a predetermined reference value, the control unit 6 sets a second upper limit value LIM2 of the magnitude of the input signal. In the present embodiment, the second upper limit value LIM2 is set to zero. When the second upper limit value LIM2 is set, when the magnitude SG of the input signal is determined based on the inattention degree CL as described above, the magnitude SG of the input signal becomes equal to or less than the second upper limit value LIM2. Like that. That is, in the present embodiment, when the second upper limit value LIM2 is set, the vibration generating unit 2 is not vibrated regardless of the carelessness CL.

  Here, an example of the amplitude determination process executed by the control unit 6 will be described based on the flowchart of FIG. When the ignition switch of the vehicle is turned on, the control unit 6 starts the amplitude determination process, and first determines the first upper limit value LIM1 based on the acquired load G (step S1). Next, the control unit 6 acquires the carelessness CL (step S2; carelessness detection step), and determines whether or not the carelessness CL is equal to or greater than the reference value CL0 (step S3). When the carelessness CL is equal to or greater than the reference value CL0 (Y in step S3), the prediction information is acquired and the acceleration of the vehicle is predicted (step S4; prediction information acquisition step), and the predicted acceleration is equal to or higher than a predetermined reference value. It is determined whether or not (step S5). If the prediction information is not acquired, the acceleration may be predicted as 0. On the other hand, when the carelessness CL is less than the reference value CL0 (N in step S3), the control unit 6 stops transmitting the signal to the vibration generating unit 2 (step S6), and returns to step S2.

  When the predicted acceleration is equal to or greater than the predetermined reference value (Y in Step S5), the control unit 6 sets the second upper limit value LIM2 and sets the magnitude SG of the input signal SG to 0 (Step S7). On the other hand, when the predicted acceleration is less than the predetermined reference value (N in step S5), the control unit 6 determines the magnitude of the temporary input signal from the proportional relationship between the inattention degree CL and the magnitude SG of the input signal. SGx is calculated (step S8).

  Following step S8, the control unit 6 determines whether the magnitude SGx of the temporary input signal is equal to or less than the first upper limit value LIM1 (step S9). When the temporary input signal size SGx is equal to or smaller than the first upper limit value LIM1 (Y in step S9), the input signal size SG is set equal to the temporary input signal size SGx (step S10). ). On the other hand, when the magnitude SGx of the temporary input signal is larger than the first upper limit value LIM1 (N in step S9), the magnitude SG of the input signal is made equal to the first upper limit value LIM1 (step S11). ). Following step S7, step S10, or step S11, the control unit 6 transmits an input signal having the determined magnitude to the vibration generating unit 2 (step S12). Steps S7, S10, and S11 described above correspond to the control process.

  After step S12, the control unit 6 returns to step S2 again, and repeats the above steps until the ignition switch of the vehicle is turned off. In addition, when a seated person changes in the state where the ignition switch of the vehicle is on, the process may return to step S1.

  The amplitude determination process as described above will be described with a more specific example. First, it is assumed that the load applied to the vibration generating unit 2 is G1, the degree of carelessness detected is CL1 (> CL0), and the predicted acceleration is less than a predetermined reference value. At this time, in step S1, the first upper limit value LIM1-1 is determined based on the load G1, as shown in FIG. Further, in step S8, the magnitude SGx of the temporary input signal is determined based on the inattention level CL1 as shown in FIG. At this time, since the magnitude SGx of the temporary input signal is equal to or less than the first upper limit value LIM1-1, the result is Y in step S9, and the magnitude SG of the input signal is the magnitude SGx of the temporary input signal in step S10. Is equal to

  On the other hand, the case where the load is changed to G2 (> G1) from the above example will be described. In step S1, the first upper limit value LIM1-2 is determined based on the load G2 as shown in FIG. As described above, the provisional input signal magnitude SGx is determined. Since this value is larger than the first upper limit value LIM1-2, N is obtained in step S9, and the input signal magnitude SG is designated in step S11. It becomes equal to the first upper limit value LIM1-2. As described above, even when the equivalent carelessness CL is detected, the first upper limit value LIM1 varies depending on the load G, and as a result, the magnitude SG of the input signal may vary.

  Further, if the inattention level CL does not decrease even when the predetermined inattention level CL is detected and the vibration generating unit 2 vibrates, the vibration is continued by repeating the steps of the amplitude determination process. At this time, for example, when sudden braking is predicted and the predicted acceleration is equal to or greater than the reference value, Y is obtained in step S5, and the magnitude SG of the input signal is 0 in step S7. That is, when the acceleration is predicted, the vibration of the vibration generating unit 2 is stopped.

  Furthermore, the amplitude determination process may be executed individually for each of the vibrators 21 to 24. At this time, depending on the arrangement of the vibrators 21 to 24, in steps S4 and S5, an acceleration in a predetermined direction may be predicted and whether or not the reference value or more may be determined.

  For example, since the seating portion vibrators 21 and 22 are easily damaged by excessive vibration due to a load on the lower side or the front side, the acceleration due to sudden braking is predicted and whether or not the reference value or more is exceeded. You may judge. Further, since the backrest vibrators 23 and 24 are easily damaged due to excessive vibration due to a load applied to the rear side, the acceleration due to sudden acceleration is predicted and whether or not the reference value is exceeded is determined. Also good. In addition, when a vehicle turns suddenly, a load is easily applied to a vibrator located in a direction opposite to the turning direction. It may be determined whether or not there is. Further, it is measured in advance what kind of load is applied to the seat SH when the vehicle is suddenly started, suddenly braked, or suddenly turned, and the acceleration in each direction is set as a reference in each vibrator 21 to 24 according to the measurement result. You may determine whether it is more than a value.

  By setting the first upper limit value LIM1 for the magnitude of the input signal to the vibration generating unit 2 according to the load G applied to the vibration generating unit 2 when the seated person is seated by the above configuration, an appropriate value can be obtained. It can be an upper limit. That is, when the load G is large, damage due to excessive vibration is suppressed by decreasing the first upper limit value LIM1, and when the load G is small, the strength of vibration is increased by increasing the first upper limit value LIM1. Make it easier to secure. Thus, by setting an appropriate first upper limit value LIM1 based on the load G with respect to the magnitude of the input signal to the vibration generating unit 2, it is possible to transmit as much vibration as possible to the seated person and the vibration generating unit. 2 damage can be suppressed.

  The first upper limit value LIM1 can be set to a more appropriate value by setting the load G applied to the vibration generating unit 2 as a damage induction degree when the seated person is seated. That is, as the load G applied to the vibration generating unit 2 increases, damage due to excessive vibration is likely to occur. Therefore, by setting the first upper limit value LIM1 according to the load G, an appropriate value can be obtained.

  By detecting the intensity of sleepiness of the seated person as the carelessness level CL by the carelessness level detection unit 3, the sleepiness can be eliminated by transmitting vibration to the seated person.

  In addition, this invention is not limited to the said Example, The other deformation | transformation etc. which can achieve the objective of this invention are included in this invention.

  For example, in the above-described embodiment, the load applied to the vibration generating unit 2 when the seated person is seated is defined as the degree of damage induction. However, the degree of damage induction may include information other than such a load. For example, if the inertial force generated at the time of starting, braking, or turning of the vehicle increases, the vibration generating part is likely to be damaged by excessive vibration, so that the seated person's driving habits and habits (sudden start, sudden braking, sudden turn) Frequency, etc.), seating posture, seating position, etc. may be stored, and the degree of damage induction including driving habits and habits may be used.

  Moreover, in the said Example, although the damage induction degree was acquired with the input part 4, you may measure and acquire a damage induction degree with a measurement part. The measurement part should just be a pressure sensor provided, for example in the seat.

  Moreover, in the said Example, although the carelessness detection part 3 shall detect the intensity | strength of a seated person's sleepiness as a carelessness degree, you may detect other information as a carelessness degree. For example, when the time when the seated person's line of sight deviates from the traveling direction is long, the degree of casual driving (low concentration of driving) may be detected as the carelessness. Moreover, you may detect the shift | offset | difference from the normal driving | running | working state of a vehicle as a carelessness degree. For example, a state of inadvertentity detection provided on a vehicle that travels at a normal speed, does not deviate from the lane, and has a sufficient distance from other vehicles or installations on the road. The deviation from the normal running state may be detected by an imaging unit, a radar, or the like. According to such a configuration, it is possible to alert the deviation of the vehicle from the normal running state by transmitting vibration to the seated person.

  Moreover, in the said Example, although the vibration generation part 2 shall vibrate in order to alert a seated person when a carelessness degree is high, a vibration generation part interlock | cooperates with the audio equipment provided in the vehicle, Vibration may be generated in order for the seated person to feel the beat of music. At this time, it is preferable that the control unit sets an upper limit value of the magnitude of the input signal to the vibration generating unit when the sound volume of the acoustic device becomes a predetermined value or more. When the input signal is determined according to the volume during normal times (ie, the higher the volume, the stronger the vibration) and the strongest possible vibration is transmitted to the seated person, and the volume of the sound device is too high. By setting the upper limit of the magnitude of the input signal, it is possible to suppress damage to the vibration generating unit.

  Moreover, although the vibration control apparatus 1 of the said Example shall be provided in the seat SH of the vehicle as a mobile body, you may provide a vibration control apparatus in the seat of mobile bodies (for example, an aircraft and a ship) other than a vehicle. . In addition, the seat provided with the vibration control device may not be a seat of a moving body, and the vibration control device may cause vibration due to carelessness with respect to the work while the seated person is performing some work on the seat. Any alarm can be used.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the present invention has been illustrated and described primarily with respect to particular embodiments, but is not limited to the embodiments described above without departing from the scope and spirit of the present invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

DESCRIPTION OF SYMBOLS 1 Vibration control apparatus 2 Vibration generating part 3 Inattention degree detection part 4 Input part 6 Control part S Seat

Claims (10)

A vibration generating portion provided in the seat;
A carelessness detection unit for detecting the carelessness of a seated person,
A control unit for controlling the magnitude of an input signal to the vibration generating unit,
The control unit obtains a degree of damage induction that is easily damaged by the vibration generation unit caused by the seated person sitting, and sets an upper limit value of the magnitude of the input signal according to the degree of damage induction In addition, the magnitude of the input signal is determined according to the degree of carelessness so as to be equal to or less than the upper limit value.   The vibration control apparatus according to claim 1, wherein the degree of damage induction includes a load applied to the vibration generation unit when the seated person is seated.   The vibration control device according to claim 2, wherein the control unit sets the upper limit value lower as the load increases.   4. The apparatus according to claim 1, further comprising at least one of an input unit for inputting the degree of damage induction and a measurement unit for measuring the degree of damage induction. 5. Vibration control device.   The vibration control apparatus according to claim 1, wherein the carelessness detection unit detects the drowsiness of the seated person as the carelessness degree. Provided in the moving body,
The vibration control apparatus according to claim 1, wherein the carelessness detection unit detects a shift of the moving body from a normal running state as the carelessness degree. A vibration generating unit provided in a seat of the moving body;
A control unit for controlling the magnitude of an input signal to the vibration generating unit,
The control unit determines the magnitude of the input signal according to the volume of the acoustic device provided in the moving body, and when the volume exceeds a predetermined value, the upper limit value of the input signal A vibration control device characterized by setting.   The vibration control device according to claim 1, wherein at least one of the vibration generation units is provided in each of a seating portion and a backrest portion of the seat. A carelessness detection process for detecting the carelessness of the seated person,
A control step of controlling the magnitude of the input signal to the vibration generating unit,
In the control step, the degree of damage induction, which is the ease with which the vibration generating part is damaged when the seated person is seated, is acquired, and the upper limit value of the input signal is set according to the degree of damage induction And a magnitude of the input signal is determined according to the degree of carelessness so as to be less than or equal to the upper limit value.   A vibration control program that causes a computer to execute the vibration control method according to claim 9.

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