JPH1024785A - Space environment automatic adjusting device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a car audio sound field capable of reducing the power consumption and suitable for the crew condition. SOLUTION: A frequency-scanned high-frequency signal is generated from an oscillation section 12, it is fed to a sensor section 11 from a transmission path 14, the reflected wave from the sensor section 11 is detected by a reflected wave sensor 13, and vacancy, a baggage, and a human body are judged by a controller 15 based on the reflected wave level of the output of the reflected wave sensor 13 and the characteristics of the frequency in a human body sensor 1. The human body sensor 1-1 , 1-2 ,..., 1-4 are provided on seats, the human body presence/absence signals of the seats by the human body sensors 1-1 , 1-2 ,..., 1-4 are fed to a car audio 2 having a sound field control function, and the car audio 2 selects speakers 3a, 3b, 3c, 3d in response to the human body presence/absence to provide the proper sound field.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a space environment automatic adjusting apparatus for automatically selecting a sound field of a car audio of an automobile, and automatically opening and closing an air outlet of an air conditioner.

[0002]

2. Description of the Related Art In recent automobiles, car audio is provided on the left and right sides of a front seat and on the left and right sides of a rear seat, and the sound field can be adjusted by selecting which speaker is operated by setting according to the number of passengers. Is increasing. It also has several air conditioner outlets so that the direction of the outlet can be changed manually.

[0003]

In the case of the above-mentioned conventional audio of a car, the number of which can adjust the sound field has been increasing so far. Without it, an ideal sound field could not be created. For example, when an occupant gets in all the seats and a person in the rear seat gets off halfway, the sound field is not changed unless the occupant settings are changed. Since the operation of changing the setting is troublesome, sound field adjustment is not often used. Also, in an air conditioner of a car, when the switch is turned on, air is blown from all outlets, so that, for example, even though no passenger is seated in the passenger seat, air is blown from the outlet in front of the passenger. In such a case, the only solution was to manually change the direction of air flow at the outlet. Ventilation from all outlets leads to lowering the set temperature and increasing the ventilation intensity,
This often results in gasoline consumption.

[0004] The present invention has been made in view of the above-mentioned problems, and has a spatial environment of an automobile capable of automatically adjusting a spatial environment of a car audio system, a car air conditioner, and the like according to the situation of an occupant sitting in a seat. It is intended to provide an automatic adjustment device.

[0005]

According to a first aspect of the present invention, there is provided an automatic adjusting apparatus for a space environment of an automobile.
An oscillating unit including a frequency scanning unit that oscillates a high-frequency signal and automatically changes an oscillation frequency; a sensor unit including a resonance circuit; a transmission unit that transmits a high-frequency signal from the oscillating unit to the sensor unit; A detection unit that outputs a signal according to the external situation of the unit, and a human body sensor that includes a control unit that determines the presence or absence of a human body based on the detection signal and the oscillation frequency. I try to adjust it.

[0006] In this auto-environment adjusting apparatus for a vehicle,
When a high-frequency signal is applied from the oscillation unit of the human body sensor to the sensor unit via the transmission unit while changing the frequency, the detection unit outputs a signal of a different level depending on whether or not a person is sitting on the seat. Then, the control unit determines the presence or absence of a human body from the level of the detection signal and the oscillation frequency, and outputs a human body presence / absence signal. In response to the signal indicating the presence or absence of a human body, for example, a spatial environment of the vehicle such as a sound field of a car audio or a blowing of a car air conditioner is automatically adjusted.

According to a second aspect of the present invention, there is provided an apparatus for automatically adjusting the spatial environment of an automobile, comprising a human body sensor similar to that of the first aspect, and controlling the sound field of car audio by the output of the human body sensor. ing. According to a third aspect of the present invention, there is provided a device for automatically adjusting the spatial environment of a vehicle, which is provided with a human body sensor similar to that of the first aspect, and automatically controls blowing of a car air conditioner based on an output of the human body sensor.

According to a fourth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile according to the first, second or third aspect of the present invention, wherein the coil of the sensor includes a seating surface of all seats of the automobile or It is built into the back, or both. According to a fifth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile according to the first, second, or third aspect, wherein the detecting unit outputs an output for a high-frequency signal transmitted from the transmitting unit. This is to detect a phase shift.

According to a sixth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile according to the first, second or third aspect, wherein the oscillating section generates a high-frequency signal and transmits the high-frequency signal to the high-frequency signal. The signal is supplied to a sensor section including a resonance circuit via a path, a signal reflected from the sensor section to the transmission path is detected according to an external situation, and a human body is detected based on the reflected signal.

According to a seventh aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile according to the first, second or third aspect, wherein the oscillating section generates a high frequency signal and transmits the high frequency signal. The voltage is supplied to a sensor unit including a resonance circuit via a path, and a voltage or current of the sensor unit is detected according to an external situation, and a human body is detected based on the voltage or current.

According to an eighth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile according to the first, second or third aspect, wherein the oscillating section oscillates a high-frequency signal and sequentially oscillates the oscillated signal. While changing, it is supplied to the sensor unit including the resonance circuit via the transmission line, measures each reflected power for each oscillated frequency, and detects the presence or absence of a human body from the relationship between each frequency and the reflected power. Things.

According to a ninth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile, which oscillates a high-frequency signal and changes the level of the oscillating signal in accordance with the presence or absence of a nearby human body. A detection unit for receiving and detecting, and a human body sensor including a control unit that receives the oscillation signal of the detection unit, determines the presence or absence of a human body according to the level of the detection signal, and outputs a human body presence / absence signal, The spatial environment of the automobile is automatically adjusted by the output of the human body sensor.

[0013] In this automatic adjusting device for the spatial environment of an automobile,
When the oscillating unit of the human body sensor oscillates a high-frequency signal, the level of the oscillating signal of the oscillating unit changes depending on whether or not a human body is present in the chair. The control unit determines the presence or absence of a human body based on the level of the signal detected by the detection unit, and outputs a human body presence / absence signal. Then, in response to the signal indicating the presence or absence of a human body, for example, the spatial environment of the vehicle, such as the sound field of a car audio or the blowing of a car air conditioner, is automatically adjusted.

According to a tenth aspect of the present invention, there is provided an apparatus for automatically adjusting the spatial environment of an automobile, comprising a human body sensor similar to that of the ninth aspect, and automatically adjusting the sound field of the car audio by the output of the human body sensor. It was made. Also,
According to an eleventh aspect of the present invention, there is provided a device for automatically adjusting a space environment of a vehicle, comprising a human body sensor similar to the one according to the ninth aspect, wherein the output of the human body sensor is used to automatically control the air outlet of the car air conditioner. is there.

Further, the apparatus for automatically adjusting the spatial environment of an automobile according to the twelfth aspect is incorporated in the seat surface of all or some of the seats, the backrest portion, or both. According to a thirteenth aspect of the present invention, there is provided the automatic environment adjusting apparatus for a vehicle according to the ninth, tenth, or eleventh aspect, wherein the human body sensor is configured such that the high-frequency oscillating unit oscillates when there is an empty seat or luggage. In the case of a human body, the high-frequency oscillation unit detects a human body that stops oscillation.

According to a fourteenth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile.
In the device according to 1, when there is nothing or when there is an object other than a human body, the high-frequency signal oscillation unit is oscillated, the oscillation of the oscillation unit is stopped by the presence of the human body, and the high-frequency signal of the oscillation unit is detected by the detection unit. , And when the level of the detection signal of this detection unit is equal to or lower than a predetermined value, it is determined that there is a human body.

According to a fifteenth aspect of the present invention, there is provided an automatic spatial environment adjusting apparatus for an automobile.
The device according to 1, wherein a filter is provided between the detection unit and the control unit of the human body sensor, and a function is provided for amplifying an oscillation signal oscillated at a higher frequency than the human body detection unit and correcting the level of the detection signal. It is. In addition, the automatic space environment adjusting apparatus for a vehicle according to claim 16 is the ninth or the first aspect.
0 or according to claim 11, wherein the human body sensor is provided with a frequency counter, and the signal amplification factor of the detection unit is changed according to the oscillation frequency of the oscillation unit.

The automatic space environment adjusting apparatus for a motor vehicle according to claim 17 is the ninth, tenth or first aspect of the present invention.
According to the first aspect, the human body sensor is provided with a frequency counter so that when the oscillation frequency of the oscillating unit is higher than that of a human body or a vacant seat, the human body is not determined to be a human body. An automatic spatial environment adjusting apparatus for a vehicle according to claim 18, wherein the operation of the human body sensor is canceled according to claim 1, claim 2, claim 3, claim 9, claim 10, or claim 11. It has a function.

According to a nineteenth aspect of the present invention, there is provided the automatic space environment adjusting apparatus for an automobile according to the eighteenth aspect, further comprising an automatic return function that is operated when the engine is started next time after the release function is operated. Things.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a circuit diagram showing a configuration of a car audio automatic sound field adjustment device according to an embodiment of the present invention. This embodiment of a car audio automatic sound field adjustment device includes a human body sensor 1, a car audio 2 with a sound field control function, a front right speaker 3a, a front left speaker 3b, a rear right speaker 3c, and a rear left speaker 3.
d. Incidentally, the same human body sensor 1 is provided for each seat, one for each seat, for example, four for each seat 1 _-1 ,
1 _-2, 1 _-3, 1 _-4 are provided.

The human body sensor 1 has a sensor section 11, an oscillating section 12 for transmitting a high-frequency signal to the sensor section 11 via a transmission line 14, and a high-frequency signal supplied to the sensor section 11 is reflected by the sensor section 11. A reflected wave sensor unit 13 for detecting a reflected signal returning to the oscillation unit 12 side; and a control unit 15 for taking in the detected reflected signal and processing the signal.

The sensor unit 11 includes a detection coil 21 here.
A resonance capacitor 22 forming a series resonance circuit with the detection coil 21; and a real transformer 23 whose primary side is connected to the input side resonance circuit and whose secondary side is connected to the high frequency input terminal 24 and the ground GND. It is composed of However, a parallel resonance circuit may be used as the resonance circuit. As the detection coil 21, a single-turn circular air-core coil having a diameter of 200 mm is used.
1, the oscillation unit 12, the reflection sensor unit 13, and the control unit 15 are housed in a circuit case body. The detection coil 21 is
200mm diameter coil and 100mm diameter coil
Either one of these two coils may be selected and used depending on the application, or they may be connected in series and used.

Alternatively, the detection coil 21 may be wound around a magnetic core to generate a magnetic field only in one direction perpendicular to the surface of the coil 21. Further, the number of turns and the diameter of the coil may be appropriately changed depending on the detection target. As the conductor of the detection coil 21, Au (gold), Ag (silver), Cu (copper), Al (aluminum), or the like, which is a good conductor of a high-frequency signal, is used. By forming the coil 21 with a good conductor, sensitivity is improved and high-frequency power loss is reduced.

The oscillation section 12 uses an LC resonance type oscillation circuit here, but the oscillation circuit itself may be another circuit as long as it is a known high-frequency oscillation circuit, for example, using a crystal oscillator or a PLL. It may be. The oscillation unit 12
Includes a variable capacitor 41, and automatically changes the capacity of the variable
2, the frequency of the high-frequency signal output from
Scan in the range of HZ to 50 MHZ. The scanning mechanism may be provided in the oscillating unit 12 itself, or may be changed by driving the motor 53 according to a command from the control unit 15.

The reflected wave sensor unit 13 is connected to a transmission line 14
, A resistor 32 connected to one end of the capacitor, and a coil 33 connected in parallel with the resistor and M-coupled to the transmission line 14. The other end of the parallel circuit is connected to a diode 34. Connected to the anode of
The cathode of the diode 34 is connected to the G
The ND connection is made, and an output signal is derived from the cathode. The reflected wave sensor used here uses a CM-coupled sensor as described above.
Other sensors, such as by a coupling method, may be used.

The control unit 15 includes an A / D converter 51, a CPU
52, an analog signal from the reflected wave sensor unit 13 is converted into a digital signal, a logical process is performed based on the reflected wave level and frequency, and a discrimination detection process for vacant seats, luggage, and seating of a human body (adult, child) is performed. . As shown in FIG. 2, the detection coil 21 of the human body sensor 1 according to the embodiment described above is embedded and embedded in the seat of each seat. Human body sensor 1
Is installed in the seat 42, in the vehicle body or in the vicinity of the car audio.

Car audio with sound field control function
2 is each human body sensor 1_-1, 1_-2, 1 _-3, 1_-FourHuman body from
According to the presence / absence signal, each speaker 3a, 3b, 3c, 3d
Has the function of selecting the sound field and selecting the sound field.
You. In the human body sensor 1 of this embodiment device, the oscillation unit 12
To generate a high-frequency signal, and the
1 is supplied. The high frequency signal of the oscillating unit 12 is as described above.
Thus, scanning is performed in the range of 30 MHZ to 50 MHZ.
The high-frequency signal supplied to the sensor unit 11
Is reflected by In the sensor section 11, the vicinity of the detection coil 21
Depending on the object placed nearby, the permeability and displacement current of the object
Because of the difference, the impedance of the sensor 11
No, near the coil 21, ie, due to external conditions
The levels of the reflected waves are different. This reflected wave is
The controller 15 detects the reflected wave level and
Based on the frequency, a distinction between vacant seats, luggage, and a human body is detected.

FIG. 3 is a circuit diagram showing a car audio automatic sound field adjustment device using a human body sensor different from that used in FIG. The human body sensor 1 includes a sensor unit 11
The reflected wave sensor unit 13 is the same as that shown in FIG. The oscillating unit 12 differs from that of FIG. 1 in that a PLL oscillator 49 is used. The oscillating unit 12 includes a control unit 15
The high frequency oscillation frequency is changed according to the instruction from the CPU 52.

In the automatic sound field adjusting apparatus in a vehicle shown in FIGS. 1 and 3, when the oscillating unit 11 is oscillated,
If a child sits, if an adult sits, and luggage,
The characteristic of the reflected wave when the metal plate is placed is shown in FIG.
The characteristics shown by b, c, d, e, and f are obtained. according to this,
When vacant seats a and d are placed and luggage is placed, the reflected wave is very large at a certain frequency, and Q is high. When the human bodies b and c are seated, the reflected wave increases at a certain frequency, but the degree of change is small and Q is small. Such differences in the frequency characteristics of the reflected waves are caused by differences in the magnetic permeability and displacement current of vacant seats (air), luggage, human bodies, and the like. Also,
In the case of metal, the frequency is high as shown by e and f.

Therefore, as shown in FIG. 4, the level of the reflected wave detected by the reflected wave sensor unit 13 is equal to the reference value S _R.
Thus, if the frequency is small over the entire frequency range, the person is seated. Conversely, if there is a frequency of the reflected wave higher than the reference value S _R ,
Indicates that an empty seat or luggage is loaded. The CPU 52 of the control unit 15 performs the above-described human body, vacant seat, and baggage discrimination processing.

In the embodiments shown in FIGS. 1 and 3, the human body is detected from the reflected wave level and the frequency. The reflected wave level is a current, a voltage or an electric power. A human body may be detected from the phase shift. In the embodiment of FIGS. 1 and 3, when the occupant gets on a seat, the human body sensor 1 of the seat detects the occupancy of the person and sends a detection signal to the car audio 2. When car audio 2 receives this signal, depending on which seat a person is on,
The speakers 3a, 3b,
3c and 3d are selected and the volume is adjusted.

FIG. 5 is a circuit diagram showing a car audio automatic sound field adjusting apparatus according to another embodiment of the present invention. This automatic sound field adjustment device uses a human body sensor different from those shown in FIGS. Human body sensor 1 used here
Is an oscillator 70 for oscillating a high-frequency signal,
Detection circuit 80 for detecting a high-frequency signal output from 0
And a control unit 90 that receives the detection signal from the detection circuit 80 and determines whether or not there is a human body.

The oscillating unit 70 includes a detecting coil 71, a capacitor 72 connected in parallel to the detecting coil 71, one end of which is grounded, a resistor 73 connected in parallel to the capacitor 72, It has an FET 74 whose other end is connected to the gate, a series circuit of capacitors 75 and 76 connected between the gate of the FET 74 and the ground, and a resistor 77 connected in parallel with the capacitor 76.
Connection point of the capacitor 75 and 76 is connected to the drain of the FET 74, V _CC power source is connected to the source of the FET 74. The oscillating unit 70 is a Colpitts type LC oscillator, and does not need to be a novel oscillator itself. Thus, other well-known oscillators, such as a Hartley oscillator, may be used.

The oscillation frequency of the oscillation section 70 is desirably a high frequency signal of 10 MHz or more.
When 1 is a single turn, the thickness of the number of cores is 1.2 mm and the diameter is 200 mm. The diameter of the coil 71 can be appropriately selected from about 150 mm to 300 mm. The capacitor 72 is 27 PF, and the resistor 73 is, for example, a variable resistor. The sensitivity can be adjusted by changing from 10 KΩ to 150 KΩ. Capacitors 75, 7
6 are each 47 PF. The resistance 77 is 470Ω. However, these constants are merely examples, and may be appropriately selected according to the frequency to be oscillated.

The detection unit 80 includes a capacitor 8 connected to one end of a drain of an FET 74 which is an output terminal of the oscillation unit 80.
1, a diode 82 having a cathode connected to the other end of the capacitor 81 and an anode grounded, and a diode 8 having an anode connected to the other end of the capacitor 81.
3 and a capacitor 84 connected between the cathode of the diode 83 and the ground, and a detection signal is output from the cathode of the diode 83.

The control unit 90 includes an NPN transistor 91 to which a base receives the output signal of the detection unit 80 via a resistor 92, has an emitter connected to ground, and outputs a signal indicating presence or absence of a human body from a collector. When the oscillating unit 70 is oscillated in a state where the human body sensor 1 is installed in a seat, the oscillation output characteristics when the seat is vacant, when a child is seated, when an adult is seated, and when luggage is placed. Has the same characteristics as those of a, b, c, d, e, and f in FIG. However, the reflected wave in FIG. 4 is a detection output. according to this,
Q when a and b vacant seats and luggage are placed is high,
When the human bodies c and d are seated, Q becomes small. That is, as shown in FIG. 6, A / B when B / C = 0.7.
Is inversely proportional to the Q value. Thus, when the Q value of FIG. 4 is obtained, the Q value decreases in the order of vacant seat>baggage>child> adult. Therefore, ON / OFF in the control unit 90
If the reference value is set between the luggage and the child, it is possible to detect whether or not the human body is seated.

Now, in the apparatus shown in FIG.
Assuming that a package other than a human body is placed, in these cases, the Q of the detection coil 71 is high, and therefore, the oscillation unit 70 oscillates and outputs a high-frequency signal (10 MHZ). This high-frequency signal is detected by the detector 80 and input to the transistor 91 of the controller 90. In this case, the input level to the transistor 91 is high and the transistor 9
1 turns ON. This ON is output as a signal indicating that there is no human body. Next, when a person sits on the seat 42, the Q of the detection coil 71 decreases due to the influence of the magnetic permeability of the human body.
Therefore, the oscillation of the oscillating unit 70 stops or weakens, and accordingly, the level of the high-frequency signal input to the detecting unit 80 becomes 0 or small, and accordingly, the detected signal from the detecting unit 80 is also low. Therefore, the transistor 91 is turned off.
Becomes This OFF is output as a signal having a human body.

When a signal having a human body is received from the human body sensor 1, the car audio 2 with a sound field control function operates in a manner similar to that shown in FIGS. FIG. 7 is a block diagram showing a car audio automatic sound field adjustment device according to still another embodiment of the present invention. The human body sensor 1 of the automatic sound field adjustment device of this embodiment includes an oscillation unit 70 and a detection unit 80.
And a control unit 90 are the same as those in FIG. When the human body sensor 1 shown in FIG. 5 is used to detect a human body and an object, the level of the metal object is closer to the human body level than that of a non-metallic object, and even a metal object may be detected as a human body.

The human body sensor 1 shown in FIG. 7 is designed to prevent a malfunction caused by a metal plate or the like by paying attention to the oscillation frequency caused by a metal object. Therefore, this human body sensor 1
Has a filter circuit 101 and a detector 102 for high frequency. Now, when a human body on the seat is seated, the oscillation output of the oscillator 70 becomes small, it is detected by the detection unit 80, the signal level that is input to the control unit 90, for example, less than a reference value SR _1, therefore the control unit 90 outputs a human body presence signal. In the case of a human body or non-metal, the oscillation unit 70
Is cut off by the high-frequency filter 101 because the oscillation frequency is low. On the other hand, when a metal body is placed on the seat, the oscillation output of the oscillation unit 70 also decreases. However, the oscillation frequency in this case is higher than that of a human body or a nonmetallic object. The output of the oscillator 70, only high frequency components by the high frequency filter 101 is derived, is detected by the detection circuit 102, and although its output signal is input to the control unit 90, the level than, for example, the reference value SR ₁ large Therefore, the control unit 90 does not determine that a human body is present. Therefore, the metal body is not erroneously determined as a human body.

FIG. 8 is a block diagram showing a car audio automatic sound field adjusting apparatus according to still another embodiment of the present invention. This automatic sound field adjustment device is also characterized by a human body sensor provided on a seat. The human body sensor 1 of this embodiment also does not erroneously detect a metal body as a human body. 7 is the same as that of FIG. 7 in that it includes an oscillating unit 70, a detecting unit 80, and a control unit 90. However, the frequency counter 103 that counts the output of the oscillating unit 70 and the amplification factor of the And a gain control unit 104 for controlling the gain.

In the human body sensor 1, when the object is a human body or a non-metallic object, it is identified and detected by the same operation as the human body sensor described above. When the metal body is placed in the vicinity, the oscillation frequency of the oscillating unit 70 increases. The high-frequency oscillation output is counted by the frequency counter 103, and the higher the frequency, the more the amplification factor control unit 104 responds thereto.
Increase the gain of 05. Although the oscillation output of the oscillating unit 70 is lowered due to the presence of the metal body, the amplifier 10
Since the level is raised at 5, a high level input similar to that of a non-metallic object is applied to the control unit 90. Therefore, the metal body does not malfunction with the human body.

FIG. 9 is a block diagram showing a car audio automatic sound field adjusting apparatus according to still another embodiment of the present invention. This automatic sound field adjustment device is also characterized by a human body sensor provided on a seat. Human body sensor 1 of this embodiment
Also, when the metal body is a human body, it does not malfunction. The human body sensor 1 also includes an oscillating unit 70, a detecting unit 80, a control unit 9
0 is provided. The control unit 90 includes a frequency counter 103 that counts the oscillation frequency of the oscillation unit 70.
It comprises an A / D converter 106 for converting the output of the detector 80 into a digital value, and a CPU 107.

In the human body sensor 1, in the case of a human body, the oscillation output of the oscillating unit 70 decreases, and the oscillating output is
0 and is detected by the CPU 1 via the A / D converter 106.
07. If it is a non-metallic material,
The output level of the oscillating unit 70 does not decrease, and the oscillating output is taken into the CPU 107 via the detecting unit 80 and the A / D converter 106. The CPU 107 compares the fetched signal level with a reference value to identify a human body and a nonmetallic object. In the case of a metal body, the oscillation output of the oscillation unit 70 decreases and the oscillation frequency increases. Frequency counter 10
Count value indicating a higher frequency in the CPU 107 by the frequency count of 3 will have taken, CPU 107 lowers the reference value, for example, the SR ₂ where predetermined. Thus, although the signal level is taken through the detection section 80, A / D converter 106 is reduced, the signal level because lowering the reference value to SR ₂ is still greater than the reference value. Therefore, the CPU 107 does not determine that the object is a human body, and does not output a signal indicating a human body. Therefore, the metal body is not erroneously detected as a human body.

FIG. 10 is a block diagram showing a car audio automatic sound field adjusting apparatus according to still another embodiment of the present invention. In the case of a child, an elderly person, a sleeping person, or the like, even when a person is in a car seat, there is no need to control the sound field. Therefore, in this embodiment, the power supply to the human body sensor 1 is provided by the human body sensor. Sensor power off switch 211
To turn off the human body sensor 1 without using the human body detection function.
The speaker is turned off for that seat. In this case, a function stop signal may be sent instead of turning off the power to the human body sensor 1.

FIG. 11 is a block diagram showing a car audio automatic sound field adjusting apparatus according to still another embodiment of the present invention. As shown in FIG. 10, the power off switch 2 of the human body sensor 1
If the user manually operates 11 and leaves it as it is, the subsequent automatic sound field control becomes impossible. Therefore, in this embodiment, a human body sensor power supply return switch 212 is provided in series with the human body sensor power off switch 211. In this embodiment of the massager, the human body sensor power off switch 211 is normally off, and the contacts 214 and 215 of the relay 213 are both connected to the upper terminals. Therefore, the power supply voltage _Vcc is applied to the human body sensor 2. Supplied. Here, the human body sensor power off switch 211
Is turned on, a current flows through the relay 213 and the contact 21
4 and 215 are both input to the lower terminal, and the power supply to the human body sensor 2 is cut off. Next, when the engine is started next time, the human body sensor power return switch 212 is automatically turned off, the contacts 214 and 215 are returned upward, the power supply is restored, and the human body sensor function is automatically restored. In this case, a stop signal may be transmitted instead of the power supply cutoff.

FIG. 12 is a circuit diagram showing a car air conditioner blowing automatic adjustment apparatus according to still another embodiment of the present invention. This embodiment device includes a human body sensor 1 and a car air-conditioner blowing control unit 4. Human body sensor 1
The detection coil 21 is provided in a seat portion or a backrest portion of a seat. When a person is in the vehicle, the detection coil 21 detects this, outputs a human body presence signal, and inputs the signal to the car air conditioner blowing control unit 4. The car air conditioner blowing control unit 4 receives a human body presence signal from the human body sensor in the air conditioner operating state,
The blowing section is controlled so that the wind goes to the seat. The human body sensor 1 used here is the same as that used in FIG.

FIG. 13 is a circuit diagram showing a car air conditioner automatic blowing device according to still another embodiment of the present invention. This embodiment device is the same as that of FIG. 12 in that it is composed of a human body sensor 1 and a car air-conditioner blowing control unit 2. The same human body sensor 1 as in FIG. 3 is used. When the human body sensor 1 outputs a human body presence signal, the car air-conditioner blow-out control unit 4 controls the blow-out unit so that wind flows to the seat.

FIG. 14 is a circuit diagram showing a car air conditioner blowout automatic adjusting device according to still another embodiment of the present invention. This embodiment device is the same as that of FIGS. 12 and 13 except that the human body sensor 1 is the same as that of FIG. 5, and the whole operation is also the same. FIG. 15 is a circuit diagram showing a car air conditioner blowing automatic adjustment device according to still another embodiment of the present invention. The human body sensor 1 has the same basic configuration as that of FIG. 14 including an oscillation unit 70, a detection unit 80, and a control unit 90. However, the control unit 90 includes a comparator 93 that compares the reference voltage and the detection voltage.

FIG. 16 is a circuit diagram showing a car air conditioner blowout automatic adjusting device according to still another embodiment of the present invention. The human body sensor 1 is different from the other embodiment devices. The human body sensor 1 used here includes an oscillation unit 70, a detection unit 8
0 and the basic configuration including the control unit 90 are the same as those in FIG. However, the control unit 90 includes an output relay 94.

FIGS. 17, 18, 19, 20, and 21
FIG. 7 is a block diagram showing a car air conditioner blowout automatic adjustment device according to still another embodiment of the present invention. FIG.
The embodiment of FIG. 7 is used in FIG. 7, the embodiment of FIG. 18 is used in FIG. 8, the embodiment of FIG. 19 is used in FIG. 9, and the embodiment of FIG. 20 is used in FIG. ,
The embodiment apparatus of FIG. 21 uses the human body sensors used in FIG. 11, respectively.

[0051]

According to the invention according to claims 1 to 14 of the present application, the presence or absence of a human body in a seat is detected by a human body sensor, and the sound field of a car audio, Since the space environment such as air-conditioner blowing is automatically adjusted, a proper space environment in the vehicle according to the occupant situation can be obtained, and the electricity bill can be reduced. In addition, since a human body sensor that determines the presence or absence of a human body based on a change in magnetic permeability or displacement current is used, it is possible to discriminate luggage and human body sitting with one sensor. Strong against electromagnetic field immunity. It is small. Not affected by weight. No need to touch human body. The sound field is automatically adjusted according to the occupant condition. Manufacturing cost is low. And so on.

According to the invention of claims 15 to 17, in addition to the above effects, erroneous detection of a human body and a metal can be prevented, and operation can be performed more accurately. According to the eighteenth aspect of the present invention, since the operation cancellation function of the human body sensor is provided, it is possible to select between automatic adjustment and no adjustment of the spatial environment. According to the nineteenth aspect, even when the operation release function of the human body sensor is activated, the human body sensor is set to the operating state at the time of the next engine start. State.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing a car audio sound field automatic adjustment device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating mounting of a human body sensor of the car audio sound field automatic adjustment device to a seat according to the embodiment;

FIG. 3 is a circuit diagram showing a car audio sound field automatic adjustment device according to another embodiment of the present invention.

FIG. 4 is a graph showing a relationship between a frequency and a reflected wave by a signal from an oscillating unit for an empty seat, a seat (child), a seat (adult), luggage, and a metal plate in the human body sensor of the embodiment device shown in FIGS. FIG.

FIG. 5 is a circuit diagram showing a car audio sound field automatic adjustment device according to still another embodiment of the present invention.

FIG. 6 is a diagram for explaining how to obtain Q in a human body sensor of the car audio sound field automatic adjustment device of the embodiment.

FIG. 7 is a block diagram showing a car audio sound field automatic adjustment device according to still another embodiment of the present invention.

FIG. 8 is a block diagram showing a car audio sound field automatic adjustment device according to still another embodiment of the present invention.

FIG. 9 is a block diagram showing a car audio sound field automatic adjustment device according to still another embodiment of the present invention.

FIG. 10 is a block diagram showing a car audio sound field automatic adjusting apparatus according to still another embodiment of the present invention.

FIG. 11 is a block diagram showing a car audio sound field automatic adjustment device according to still another embodiment of the present invention.

FIG. 12 is a circuit diagram showing a car air conditioner blowing automatic adjustment device according to still another embodiment of the present invention.

FIG. 13 is a circuit diagram showing a car air conditioner automatic blowing device according to still another embodiment of the present invention.

FIG. 14 is a circuit diagram showing a car air conditioner blowout automatic adjustment device according to still another embodiment of the present invention.

FIG. 15 is a circuit diagram showing a car air conditioner blowing automatic adjustment device according to still another embodiment of the present invention.

FIG. 16 is a circuit diagram showing a car air conditioner blowing automatic adjustment device according to still another embodiment of the present invention.

FIG. 17 is a block diagram showing a car air conditioner blowing automatic adjustment according to still another embodiment of the present invention.

FIG. 18 is a block diagram showing a car air conditioner blowing automatic adjustment according to still another embodiment of the present invention.

FIG. 19 is a block diagram showing automatic adjustment of a blower of a car air conditioner according to still another embodiment of the present invention.

FIG. 20 is a block diagram showing a car air conditioner blowing automatic adjustment according to still another embodiment of the present invention.

FIG. 21 is a block diagram showing automatic adjustment of a blower of a car air conditioner according to still another embodiment of the present invention.

[Explanation of symbols]

1 _-1 ,..., _1-4 human body sensor 2 Car audio with sound field control function 3a, 3b, 3c, 3d Speaker 11 Sensor unit 12 Oscillator 13 Reflected wave sensor unit 14 Transmission unit 15 Control unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location G10K 15/00 G10K 15/00 M

Claims (19)

[Claims] 1. An oscillation section including a frequency scanning means for oscillating a high-frequency signal and automatically changing an oscillation frequency, a sensor section including a resonance circuit, and transmission of transmitting the high-frequency signal from the oscillation section to the sensor section. Unit, a detection unit that outputs a signal according to the external situation of the sensor unit, and a human body sensor including a control unit that determines the presence or absence of a human body from the detection signal and the oscillation frequency, the output of the human body sensor An automatic space environment adjusting device for a vehicle, wherein the space environment is automatically adjusted. 2. An oscillation section including a frequency scanning means for oscillating a high-frequency signal and automatically changing an oscillation frequency, a sensor section including a resonance circuit, and a transmission for transmitting the high-frequency signal from the oscillation section to the sensor section. Unit, a detection unit that outputs a signal according to the external situation of the sensor unit, and a human body sensor including a control unit that determines the presence or absence of a human body from the detection signal and the oscillation frequency, the output of the human body sensor An automatic space environment adjusting apparatus for a car, wherein a sound field of a car audio is automatically controlled. 3. An oscillation unit including a frequency scanning unit for oscillating a high-frequency signal and automatically changing an oscillation frequency, a sensor unit including a resonance circuit, and transmission of transmitting the high-frequency signal from the oscillation unit to the sensor unit. Unit, a detection unit that outputs a signal according to the external situation of the sensor unit, and a human body sensor including a control unit that determines the presence or absence of a human body from the detection signal and the oscillation frequency, the output of the human body sensor An automatic space environment adjusting device for a car, wherein a vent of a car air conditioner is automatically controlled. 4. The sensor unit includes a coil, and the coil may be provided on all or some of the seats of the vehicle, or
Claim 1, wherein it is incorporated in the backrest, or both.
4. The apparatus for automatically adjusting the spatial environment of an automobile according to claim 2 or claim 3. 5. The automatic spatial environment of an automobile according to claim 1, wherein said detecting section detects a phase shift of an output with respect to a high-frequency signal transmitted from said transmitting section. Adjustment device. 6. The oscillation section generates a high-frequency signal, supplies the high-frequency signal to a sensor section including a resonance circuit via a transmission path, and reflects the high-frequency signal from the sensor section to the transmission path in accordance with an external situation. And detecting a human body based on the reflected signal.
An automatic spatial environment adjusting device for an automobile as described in the above. 7. The oscillation section generates a high-frequency signal, supplies the high-frequency signal to a sensor section including a resonance circuit via a transmission line, and detects a voltage or a current of the sensor section according to an external situation. 4. The apparatus for automatically adjusting the spatial environment of an automobile according to claim 1, wherein a human body is detected using the voltage or the current. 8. A high-frequency signal is oscillated by the oscillating section, and while the oscillating signal is sequentially changed, the oscillating section supplies the oscillating signal to a sensor section including a resonance circuit via a transmission line to measure each reflected power for each oscillated frequency. 4. The automatic space environment adjusting apparatus according to claim 1, wherein the presence or absence of a human body is detected from the relationship between each frequency and the reflected power. 9. An oscillating unit that oscillates a high-frequency signal and changes the level of the oscillating signal according to the presence or absence of a nearby human body, a detecting unit that receives and detects the high-frequency signal of the oscillating unit, and an oscillating signal of the detecting unit. A human body sensor comprising a control unit for determining the presence or absence of a human body according to the level of the detection signal and outputting a human body presence / absence signal, and automatically adjusting the spatial environment by the output of the human body sensor. A spatial environment automatic adjustment device for a vehicle, characterized in that: 10. An oscillating unit that oscillates a high-frequency signal and changes the level of the oscillating signal according to the presence or absence of a nearby human body, a detecting unit that receives and detects the high-frequency signal of the oscillating unit, and an oscillating signal of the detecting unit. And a control unit for determining the presence or absence of a human body according to the level of the detection signal and outputting a human body presence / absence signal.The output of the human body sensor automatically controls the sound field of the car audio. An automatic space environment adjustment device for a vehicle, wherein the adjustment is performed. 11. An oscillating unit that oscillates a high-frequency signal and changes the level of the oscillating signal according to the presence or absence of a nearby human body, a detecting unit that receives and detects the high-frequency signal of the oscillating unit, and an oscillating signal of the detecting unit. And a control unit for determining the presence or absence of a human body according to the level of the detection signal and outputting a human body presence / absence signal.The output of the human body sensor automatically controls the outlet of the car air conditioner. An automatic space environment adjustment device for a vehicle, wherein the adjustment is controlled. 12. The spatial environment according to claim 9, 10 or 11, wherein the oscillating unit includes a coil, and the coil is incorporated in a seat surface or a backrest portion of all or some of the seats. Automatic adjustment device. 13. The human body sensor according to claim 9, wherein the high-frequency oscillator oscillates when the seat is empty or luggage, and the high-frequency oscillator detects oscillation when the human body is stopped.
12. The apparatus for automatically adjusting the spatial environment of an automobile according to claim 10 or claim 11. 14. When there is nothing or when there is an object other than a human body, a high-frequency signal oscillating unit is oscillated,
The oscillation of the oscillating unit is stopped in the presence of a human body, the high-frequency signal of the oscillating unit is detected by the detection unit, and when the level of the detection signal of the detection unit is equal to or less than a predetermined value, it is determined that there is a human body. 12. The apparatus for automatically adjusting the spatial environment of an automobile according to claim 10 or claim 11. 15. The apparatus according to claim 15, further comprising a filter provided between the detection unit and the control unit of the human body sensor to amplify an oscillation signal oscillated at a frequency higher than that of the human body detection unit and to correct the level of the detection signal. 9. The apparatus for automatically adjusting the spatial environment of an automobile according to claim 10 or claim 11. 16. The human body sensor according to claim 9, wherein a frequency counter is provided, and the signal amplification factor of the detection unit is changed according to the oscillation frequency of the oscillation unit. Automatic space environment adjustment device for automobiles. 17. The human body sensor according to claim 9, wherein a frequency counter is provided so that when the oscillation frequency of the oscillating section is higher than that of a human body or a vacant seat, the human body sensor is not determined to be a human body.
Alternatively, the spatial environment automatic adjustment device according to claim 11. 18. The automatic space environment of an automobile according to claim 1, further comprising a function of canceling the operation of said human body sensor. Adjustment device. 19. The apparatus for automatically adjusting the spatial environment of a vehicle according to claim 18, further comprising an automatic return function which is activated when the engine is started next time after the release function is operated.