JP5000907B2 - Combined environmental test equipment - Google Patents

Description

  The present invention relates to a combined environmental test apparatus that evaluates ride comfort in passenger cabins of vehicles such as trains, automobiles, and aircraft.

2. Description of the Related Art Conventionally, as a cabin environment simulation device, a device capable of simulating various cabin environments has been proposed (see Patent Document 1 below).
FIG. 4 is a schematic diagram of the cabin environment simulation device.
In this figure, 101 is a fixed part, 102 is a swinging device body, 103 is a simulated cabin, 104 is an outdoor unit of an air conditioner, 105 is a servo amplifier, 106 is a swing control device, and 107 is a lifting device.

In addition, in order to evaluate the ride comfort of a passenger cabin such as a train, an automobile, and an aircraft, the high frequency range is evaluated as the sensation vibration, and the middle high frequency range is evaluated as the room noise.
JP 2003-295750 A

As for the ride comfort, which is an index of comfort of transportation, an index using a frequency weighting according to the sensitivity of the human body to the vibration frequency as a filter has been used.
FIG. 5 is a diagram showing an isosensory curve based on conventional ISO2633-1, where the horizontal axis represents frequency (Hz) and the vertical axis represents frequency weighting (dB).
As is clear from FIG. 5, the sensitivity to the vibration frequency of the human body is highest at 5 Hz in the vertical direction and around 2 Hz in the left / right / front / rear direction, and the sensitivity decreases as the frequency becomes lower and higher.

  On the other hand, in a high-speed railway vehicle or an aircraft having a lightweight vehicle body, the frequency range of vibration acceleration that affects the ride comfort contains many high-frequency components (20 to 80 Hz) that are hardly found in transportation such as conventional railways. Yes. This frequency band is considered to have a low sensitivity characteristic of the human body in the conventional evaluation method and does not significantly affect the ride comfort, but in fact, it has a great influence on the ride comfort. There was a divergence. This is because this frequency band is a component that is sufficiently perceived on the skin surface as chatter, although the human body sensitivity as a magnitude of vibration is not so high as compared with a component of 10 Hz or less which is weighted by the conventional method. Also, since it overlaps the low frequency audible range as the sound range, it seems to be manifested by being perceived as low frequency noise.

From the above, it is necessary to consider the influence of ultra-low-frequency sound and low-frequency sound in addition to high-frequency vibration in evaluating riding comfort in this high-frequency vibration region. Furthermore, in order to reproduce the noise in the cabin, it is necessary to consider the influence of super high frequency sound in addition to the conventional medium and high sounds.
In view of the above circumstances, an object of the present invention is to provide a composite environment test apparatus that takes into account the effects of ultra-low frequency sound, low-frequency sound, and ultra-high frequency sound in addition to high-frequency vibration in riding comfort evaluation. .

In order to achieve the above object, the present invention provides
[1] A vibration exciter (3) by an actuator arranged between the fixed part (1) and the simulated cabin (2) and capable of generating a vibration of 8 Hz or less, and a vibration of about 0.5 to 80 Hz can be generated. a high-frequency shaker table (4), and ultra-low frequency sound speaker can reproduce low-frequency sound up to about 0.5 to 8 0H z (5), the high frequency speakers in capable of playing a high-frequency in up to about 80Hz~20kHz (6) and a combined environmental test apparatus having the simulated guest room (2) provided with an ultra-high frequency sound speaker (7) capable of reproducing an ultra-high frequency up to about 20 to 100 kHz, It is characterized by simulating the in-vehicle environment when a vehicle such as a train, an automobile, or an aircraft travels by projecting an image linked with vibration and sound by a large screen installed outside.

[ 2 ] In the combined environmental test apparatus described in [1] above, the vibration and sound frequency and magnitude can be controlled separately, so that the combined influence of vibration and sound in human environmental comfort evaluation can be examined. It is characterized by.
[ 3 ] In the combined environmental test apparatus described in [1] above, since the frequency bands of vibration and sound are overlapped, the evaluation based on the human experience with respect to the magnitude of any vibration is affected by the addition of sound. It can be examined.

[ 4 ] In the combined environmental test apparatus described in [1] above, since the frequency band of vibration and sound overlaps, the evaluation by the human sensation for an arbitrary sound volume is affected by the addition of vibration. It can be examined.
[ 5 ] In the combined environmental testing apparatus described in [1] above, by controlling the brightness of the simulated cabin, the interior environment of a vehicle such as a train, automobile, or aircraft can be simulated and its comfort can be evaluated. It is characterized by.

[ 6 ] In the combined environmental test apparatus described in [1] above, by controlling the temperature of the simulated guest room, it is possible to simulate the interior environment of a vehicle such as a train, an automobile, or an aircraft and evaluate its comfort. It is characterized by doing.

  According to the present invention, in addition to the conventional medium to low frequency vibration, high frequency vibration and low frequency sound can be exposed at the same time, and the indoor environment of a railway vehicle or an aircraft can be reproduced under conditions close to reality. This makes it possible to establish a ride evaluation that is closer to the experience.

The composite environmental test apparatus of the present invention includes an exciter (3) by an actuator that can generate vibrations of 8 Hz or less, which is arranged between the fixed part (1) and the simulated cabin (2), and about 0.5 to 80 Hz. a high-frequency shaker table generating oscillatory up (4), and ultra-low frequency sound speaker can reproduce low-frequency sound up to about 0.5 to 8 0H z (5), a high frequency in up to about 80Hz~20kHz A composite environmental test apparatus having the simulated guest room (2) provided with a mid-high frequency speaker (6) capable of reproduction and a super-high frequency sound speaker (7) capable of reproducing super-high frequency up to about 20 to 100 kHz, A large screen installed outside the simulated guest room (2) projects an image linked with vibration and sound, thereby simulating the interior environment of a vehicle such as a train, an automobile, or an aircraft.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view of a composite environmental test apparatus showing an embodiment of the present invention, FIG. 2 is a schematic view showing a high-frequency vibration table and a seat of the composite environmental test apparatus, and FIG. It is a figure which shows a frequency sound speaker.
In these drawings, 1 is a fixed unit, 2 is a simulated cabin, 3 is a vibration exciter that is arranged between the fixed unit 1 and the simulated cabin 2 and can generate vibrations of 8 Hz or less, and 4 is in the simulated cabin 2 , 0 . A high-frequency excitation table that can generate vibrations of about 5 to 80 Hz, 5 is an ultra-low frequency sound speaker that is arranged in the simulation cabin 2 and can reproduce low-frequency sounds of about 0.5 to 80 Hz, and 6 is 80 to 80 A medium and high frequency speaker 7 that can reproduce medium and high frequencies up to about 20 kHz, and a super high frequency sound speaker 7 that can reproduce super high frequency sounds up to about 20 to 100 kHz. More specifically, the simulated guest room 2 is provided with a bottom 8 of the guest room, a seat 9 and a floor 10 of the seat. The high-frequency vibration exciter 4 is simulated with the floor 10 of the seat as shown in FIG. Located between the bottom 8 of the guest room 2 and the vibration of about 8 Hz to 80 Hz, the seat has six degrees of freedom (front and rear x, left and right y, up and down z, roll around x axis, pitch around y axis, around z axis (Yaw) direction. The ultra-low frequency sound speaker 5 shown in FIG. 3 is arranged at the bottom 8 of the simulated cabin 2 as shown in FIG. The ultra-low frequency sound speaker 5 is, for example, SPD-SW2000D manufactured by Sarlogic, and the output is 1 kW + 1 kW, and the reproduction frequency is 10 to 120 Hz (the low-pass filter is variable from 20 to 120 Hz). Further, the middle / high frequency speaker 6 is disposed in the vicinity of the seat 8. In addition, the super-high frequency sound speaker 7 is disposed at a high place in the simulated cabin 2.

As described above, the composite environment test apparatus according to the present invention generates a high-frequency excitation table 4 capable of generating a vibration of about 0.5 to 80 Hz and a low-frequency sound of about 0.5 to 80 Hz in the simulated cabin 2. and ultra-low frequency sound speaker 5 can play, and installation and high frequency speakers 6 in which can play a high frequency in up to about 80～20KHz, ultra high frequency sound speakers 7 can play ultra high frequency sound up to about 20 to 100 kHz, the running By simulating sound (or flight sound) and vibration, it is possible to perform an evaluation test of these complex environments.

According to the present invention, in addition to the conventional medium to low frequency vibration, high frequency vibration and ultra low frequency to ultra high frequency sound can be simultaneously exposed, and the interior environment of a high-speed railway vehicle, aircraft, or the like is close to reality. It can be reproduced and a ride evaluation that is closer to the experience can be established.
Further, according to the present invention, it is possible to perform an evaluation test of an environment where high-frequency vibration occurs.
In addition, this invention is not limited to the said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.

  The composite environment test apparatus of the present invention can be used as a measurement apparatus for comfort in an environment where sound and vibration are combined.

It is a schematic diagram of the composite environment test apparatus which shows the Example of this invention. It is a schematic diagram which shows the high frequency vibration stand and seat of the composite environment test apparatus which show the Example of this invention. It is a figure which shows the very low frequency sound speaker of the composite environment test apparatus which shows the Example of this invention. It is a schematic diagram of the conventional simulator environment simulator. It is a figure which shows the isosensory curve based on the conventional ISO26331-1.

DESCRIPTION OF SYMBOLS 1 Fixed part 2 Simulated guest room 3 Exciter by actuator which can generate vibration of 8 Hz or less 4 High frequency excitation table which can generate vibration of about 0.5 to 80 Hz 5 Reproduce low frequency sound of about 0.5 to 80 Hz Super low frequency sound speaker 6 Medium to high frequency speaker capable of reproducing medium to high frequency up to about 80-20 kHz 7 Ultra high frequency sound speaker capable of reproducing ultra high frequency sound up to about 20-100 kHz 8 Bottom of guest room 9 Seat 10 Seat floor

Claims (6)

A vibrator by the actuator that can generate less vibration 8Hz disposed between the stationary portion and the simulated room, a high-frequency shaker table that can generate vibration of up to about 0.5~80Hz, 0.5~8 0H an ultra-low frequency sound speaker capable of reproducing low-frequency sound up to about z, a mid-high frequency speaker capable of reproducing medium-high frequency up to about 80 Hz to 20 kHz, and an ultra-high frequency sound speaker capable of reproducing ultra-high frequency up to about 20 to 100 kHz A combined environmental test apparatus having the simulated guest room provided with a large screen installed outside the simulated guest room to project an image linked with vibration and sound, thereby driving a vehicle such as a train, an automobile, and an aircraft. A combined environmental testing device that simulates the vehicle interior environment.   The combined environmental test apparatus according to claim 1, wherein the frequency and magnitude of vibration and sound can be controlled separately, whereby the combined influence of vibration and sound in human environmental comfort evaluation can be examined. Combined environmental test equipment.   In the composite environment test apparatus according to claim 1, since the frequency band of vibration and sound overlaps, the evaluation based on the human sensation with respect to the magnitude of arbitrary vibration can examine the influence received by the addition of sound. A combined environmental testing device.   In the composite environmental test apparatus according to claim 1, since the frequency band of vibration and sound overlaps, the evaluation based on the human sensation with respect to an arbitrary sound volume can examine the influence received by the vibration. A combined environmental testing device.   In the combined environmental test apparatus according to claim 1, by further controlling the brightness of the simulated guest room, the interior environment of a vehicle such as a train, an automobile, and an aircraft can be simulated and the comfort evaluation can be performed. A combined environmental testing device.   The combined environmental test apparatus according to claim 1, further comprising controlling the temperature of the simulated cabin to simulate the in-vehicle environment of a vehicle such as a train, an automobile, and an aircraft and to evaluate its comfort. Combined environmental testing equipment.

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