JPH04314616A - On-vehicle air cleaner - Google Patents

Abstract

PURPOSE:To provide an air cleaner which quickly detects the fouling of air and speedily starts operation. CONSTITUTION:A on-vehicle air cleaner has a connectable/disconnectable operation part 1 consisting of a fouling sensor 1a for detecting the fouling of air, a fouling sensor processing means 1b for processing the output of the fouling sensor 1a into a transmission signal, and a transmitter means 1c for transmitting the output from the fouling sensor processing means 1b, and a body part 2 consisting of a motor 2d for rotating a fan, a receiver means 2a for receiving the transmission signal from the transmitter means 1c, a received data processing means 2b for processing the signal received by the receiver means 2a, and a control means 2c for receiving the output from the received data processing means 2b and controlling the motor. Since the fouling sensor is provided in the operation part formed connectably and disconnectably to the body part and the output value of the fouling sensor is transmitted to the body part at any time, a on-vehicle air cleaner speedily operable in the case where the air is fouled can be provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle air cleaner for use in a vehicle to purify the air.

0002

[Prior Art] In recent years, interest in indoor dirt has increased,
Air purifiers are gaining attention. Therefore, the mainstream of air cleaners has become highly functional and has an automatic operation function using various sensors. The same can be said for cars, and the need for in-vehicle air purifiers is increasing.

Conventional vehicle-mounted air cleaners generally use gas sensors to detect air pollution. This gas sensor is located in the main body, and according to the output of this gas sensor, a motor is driven to purify the air.

0004

[Problems to be Solved by the Invention] In the conventionally configured car air purifier, the main body is installed in the rear tray (behind the rear seats), so if the driver or passenger seat smokes, the dirt sensor It took time for the dirt to reach the smoker, and there was a time lag between when smoking started and when the main body started operating, which was not realistic.

[0005] The present invention is an attempt to solve the above-mentioned problems, and its primary purpose is to provide an air purifier that can quickly detect air pollution and start operating quickly. Furthermore, in relation to the first purpose, smoking in the rear seat and smoking in the driver's seat or passenger seat are detected at the same time;
A second object of the present invention is to provide an air cleaner in which there is no difference in the time required to start operation depending on the location of dirt. Furthermore, a third object is to provide an air purifier that more reliably achieves the first object and operates in a way that suits the user's experience. Furthermore, the fourth objective is to provide an air cleaner that can more reliably perform operations that meet the user's experience, which is the third objective. Furthermore, our fifth objective is to provide an air purifier that performs smooth control even when the change in the degree of air pollution is steep or subtle, and operates in a way that suits the user's experience. There is.

[0006]

[Means for Solving the Problems] A first means of the present invention for achieving the first object is to provide a dirt sensor that detects dirt in the air, and a dirt sensor that processes the output of the dirt sensor into a transmission signal. a removable operation unit comprising a sensor processing means, a transmitting means for transmitting an output from the dirt sensor processing means; a motor for rotating a fan; a receiving means for receiving a transmission signal from the transmitting means; The vehicle air purifier has a main body comprising a received data processing means for processing a signal received by the means, and a control means for controlling a motor in response to an output from the received data processing means. .

A second means of the present invention for achieving the second object includes: an ultraviolet sensor for detecting ultraviolet rays; an ultraviolet sensor processing means for converting the output of the ultraviolet sensor into a transmission signal; a detachable operation unit consisting of a transmitting means for transmitting the output from the processing means; a motor for rotating the fan; a receiving means for receiving the transmitted signal from the transmitting means; and a receiving means for processing the signal received by the receiving means. received data processing means 2b that transmits the received data to the control means 2c;
A timer that measures time in response to the output from the received data processing means, a dirt sensor that detects dirt in the air, and a control that controls the motor in response to the output of this timer and the dirt sensor. The present invention provides an on-vehicle air cleaner having a main body portion comprising means.

A third means of the present invention for achieving the third object includes a particle sensor for detecting smoke particles, particle sensor processing means for processing the output of the particle sensor, and processed data. a detachable operation unit consisting of a transmitting means for transmitting data, a motor for rotating a fan, a receiving means for receiving a transmitted signal from the transmitting means, and a received data processing means for processing the signal received by the receiving means. a gas sensor for detecting gas components; a gas sensor processing means for processing the output of the gas sensor; and a control means for controlling the motor in response to outputs from the gas sensor processing means and the received data processing means; The present invention provides an air purifier for use in a vehicle, which includes a main body portion including a timer that starts measuring time based on the output from the control means.

A fourth means of the present invention for achieving the fourth object includes a particle sensor for detecting smoke particles, particle sensor processing means for processing the output of the particle sensor, and processed data. a detachable operation unit comprising a transmitting means for transmitting data, a motor for rotating the fan, a halving means for determining and controlling the rotation speed of the motor, and a receiving means for receiving the transmitted signal from the transmitting means; a received data processing means for processing a signal received by the receiving means and outputting the signal to the halving means; a gas sensor for detecting a gas component; a gas sensor processing means for processing the output of the gas sensor; The vehicle air cleaner has a main body section comprising a control means for receiving an output from the reception data processing means and outputting the output to the halving means.

A fifth means of the present invention for achieving the fifth object is a motor for rotating a fan, a gas sensor for detecting gas components, and gas sensor processing means for processing the output of the gas sensor. storage means for storing the output from the gas sensor processing means and outputting the previous output value; comparison means for comparing this output with the output from the gas sensor processing means and detecting a difference; and the comparison means determining means for determining the output from the determining means and changing the output destination depending on the result; first timer means and second timer means for measuring a predetermined time based on the output from the determining means; and the first timer means and second timer means. and a control means for controlling the rotation speed of the motor based on the output from the determination means.

[0011]

[Operation] The first means of the present invention is to detect air pollution using a dirt sensor provided in the operating section, and by moving the operating section to the location where dirt occurs, air pollution can be detected quickly and reliably. It is possible. Further, the second means of the present invention is that the operating section is equipped with an ultraviolet sensor that detects ultraviolet rays generated from the flame of a lighter lit for smoking, and the main body is equipped with a dirt sensor that detects dirt. This is used to start and stop the main unit. Therefore, the air purification speed is uniform without any difference depending on location. A third means of the present invention is that the operating section is equipped with a particle sensor that detects particles contained in cigarette smoke, etc., and the main body is equipped with a gas sensor, and the device operates using signals from both of these. . When you start smoking in this way, the operation starts immediately with the detection signal from the particle sensor, and the operation ends when you stop smoking and particles contained in cigarette smoke are no longer detected. The device continues to operate using a gas sensor installed in the main body. This makes it possible to perform actions that match the smoker's feelings. Next, the operation of the fourth means of the present invention will be explained. When the halving means provided in the main body receives an off signal from the particle sensor provided in the operation part, it checks the output of the gas sensor and if this signal remains, it continues to drive the motor without stopping the main body operation. It acts to generate airflow. This airflow agitates the indoor air and purifies the indoor air. In this way, it is possible to create an air purifier that meets the user's needs. Furthermore, the fifth means of the present invention works to slow down the output change when the detection signal of the gas sensor changes sharply, avoiding the sudden change in the operating state of the main body and giving the user a sense of discomfort. It is something to do. In this way, the air purifier can perform operations that suit the user's experience of use.

0012

Embodiment The structure of an embodiment of the first means of the present invention will be described below with reference to FIG. Reference numeral 1 denotes an operating section that is detachable from the main body section 2. The operation unit 1 includes a dirt sensor 1a that detects dirt in the air, and dirt sensor processing means 1 that converts the output of the dirt sensor 1a into a transmission signal.
b. A transmitting means 1c for transmitting the output of the dirt sensor processing means 1b as, for example, an infrared signal is built-in. The dirt sensor may be, for example, a gas sensor that uses a tin oxide semiconductor and outputs a signal according to the amount of gas attached to its surface, or a gas sensor that includes a light emitting element and a light receiving element and detects dirt from the light emitted by the light emitting element. A particle sensor or the like that uses a light-receiving element to detect light reflected by a particle component can be considered. Also, the main body part 2
a receiving means 2a receiving the signal from the transmitting means 1c;
It has received data processing means 2b that decodes and processes the signal received by the receiving means 2a, and control means 2c that receives the output of this received data processing means 2b and controls the motor 2d.

Next, this operation will be explained with reference to FIG. FIG. 2 shows the characteristics of the output signal of the dirt sensor. The output of the dirt sensor 1a increases the detection output for a period of time determined by the degree of dirt, such as cigarette smoke, as shown in period A. The output of this dirt sensor is processed by dirt sensor processing means 1b into a signal indicating a change ratio with respect to the reference level. In the case of Figure 2,
This change ratio is 0.6 at time T0. The output signal of this dirt sensor processing means 1b is transmitted to the transmitting means 1.
It is output to c. The transmitting means 1c transmits this data to the receiving means 2a of the main body 2 using, for example, infrared radiation. The receiving means 2a sends this data to the received data processing means 2b. The received data processing means 2b processes the data and outputs the value outputted by the dirt sensor processing means 1b to the control means 2c. The control means 2c determines whether the data sent from the received data processing means 2b is in the Hi region or the Lo region, and controls the motor 2d strongly if it is in the Hi region and weakly if it is in the Lo region. In this embodiment, the Lo and Hi are determined as 0.58<Lo≦0.90 and Hi≦0.58. For example, the value at time T0 in Figure 2 is 0.60
Since it is in the Lo region, the motor 2d is operated at low power.

As described above, according to this embodiment, the main body 2
This is a device that detects air pollution using a dirt sensor installed in a removable operating section.By moving the operating section to the location where dirt is occurring, air pollution can be detected quickly and reliably. .

Next, an embodiment of the second means of the present invention is shown in FIG.
This will be explained based on FIG. 4. 3a is an ultraviolet sensor that detects ultraviolet rays in the flame when a cigarette is ignited. The output of the ultraviolet sensor 3a is converted into a transmission signal by the ultraviolet sensor processing means 3b, and is transmitted to the main body section 4 as an infrared signal, for example, by the transmission means 3c. The ultraviolet sensor 3a, the ultraviolet sensor processing means 3b, and the transmitting means 3c
is provided in the operating section 3, which is detachable from the main body section 4. Further, the main body portion 4 has the following elements. 4a is a receiving means for receiving a transmission signal from the transmitting means 3c, and this received signal is transmitted to the received data processing means 4.
Processed by b. In other words, the received data processing means 4b
If the received signal is H, it outputs a timing signal to the timer 4c, and at the same time outputs a recognition signal to the control means 4e. Further, 4d is a dirt sensor that constantly detects dirt in the room and outputs this detection signal to the control means 4e. The control means 4e receives signals from the dirt sensor 4d and the received data processing means 4b, and controls the rotation speed of the motor 4f.

The operation of this embodiment will be explained below. Figure 4 shows
It is a time chart of the output of the ultraviolet sensor and dirt sensor when smoking is performed in the driver's seat, passenger seat, or rear seat. The ultraviolet sensor 3a detects ultraviolet rays in the flame of the lighter. This detection signal is transmitted to the ultraviolet sensor processing means 3b. Upon receiving this signal, the ultraviolet sensor processing means 3b outputs an H signal to the transmitting means 3c. Also, while not receiving this signal, it outputs an L signal. In response to this signal, the transmitting means 3c outputs a transmitting signal to the receiving means 4a of the main body 4 using, for example, infrared rays. The receiving means 4a of the main body 4 sends the received data to the received data processing means 4b. The received data processing means 4b recognizes whether the data is H or L, and if it is H, outputs a clock signal and a recognition signal to the timer 4c and control means 4e, respectively. On the other hand, the dirt sensor 4d shows a constant output value until smoking starts, and this output decreases when smoke is attracted by the rotation of the motor 4f. The output of this dirt sensor 4d is recognized by the control means 4e. Control means 4
When e first receives the H signal from the received data processing means 4b, the motor 4f is rotated at a low speed. Next, when the output of the dirt sensor 4d reaches 0.9 times the initial value output,
Rotate the motor 4f at high speed. Further, the control means 4e receives a timing signal from the timer 4c, and can discriminate whether smoking is done in the rear seat or in the driver's seat. In other words, if smoking occurs in the driver's seat, the time Tb from when the ultraviolet sensor detects the generation of ultraviolet rays until the output of the dirt sensor reaches 0.9 times the initial value
is longer than the same time Tc when smoking occurs in the rear seat. In this way, depending on the time measured by the timer 4c, it can be determined whether smoking is in the driver's seat, passenger seat, or in the back seat. By increasing the rotational speed of the motor 4f by, for example, about 20%, it is possible to attract dirt more quickly and achieve the same end time as when smoking in the back seat.

[0017] With this, the operation starts at the same time as smoking,
The interior of the car can be cleaned in the same amount of time no matter where in the car smoking is done.

Next, an embodiment of the third means of the present invention will be explained based on FIGS. 5 and 6. In this embodiment, the operation unit 5 includes a particle sensor 5a for detecting smoke particles, a particle sensor processing means 5b for processing the output of the particle sensor 5a, and a transmitting means 5c for transmitting the processed data. . Further, the main body portion 6 has the following elements. 6a is a receiving means for receiving the transmission signal from the transmitting means 5c. The signal from the receiving means 6a is processed by the received data processing means 6b and transmitted to the control means 6c. Also 6
d is a gas sensor that detects gas components, and its output is converted into a signal by gas sensor processing means 6g. The control means 6c receives the signal from the received data processing means 6b and the signal from the gas sensor processing means, and operates a motor 6e for rotating the fan and a timer 6f.

Next, this operation will be explained. In this embodiment, the operating section 5 is set on the sun visor of the driver's seat, and the main body section 7 is set on the rear tray. When smoking is performed in the driver's seat, the particle sensor 5a of the operating section 5 detects smoking smoke, causing an output change as shown in FIG. 6(a). The particle sensor processing means 5b recognizes this output, and sends an output signal to the transmitting means 5c when the output reaches, for example, 1.2 times the clean state indicated by A. Transmission means 5
c transmits this signal as a motor ON1 signal to the main body 6 using, for example, infrared rays. The receiving means 6a which has received the motor ON1 signal sends the received data to the received data processing means 6b. The received data processing means 6b recognizes the data and outputs it as a motor ON1 signal to the control means 6c. Although the gas sensor 6d constantly detects dirt, it takes time for the smoke generated in the driver's seat to reach the main body installed in the rear tray, and no change in output is observed immediately after smoking starts. FIG. 6(b) shows the output characteristics of this gas sensor. The data recognized by the gas sensor processing means 6g is 1, which is output to the control means 6c. The control means 6b to which this output signal and the motor ON1 signal are input determines that the dirt data is only the output from the particle sensor 5a, and sends a clock signal to the timer 6f that clocks a predetermined time (for example, 3 minutes). and output O to the motor 6e.
Outputs N signal. When the motor 6e is turned on, an air current is generated in the room, dirt components reach the gas sensor 6d, and the gas sensor 6d starts detecting dirt. This gas sensor 6d
When the gas sensor processing means 6g detects that the output of has reached, for example, 0.9 times, 0.8 times, 0.7 times, or 0.6 times of the initial value, the motor ON1, motor ON2, motor ON3, and motor The ON4 signal is output to the control means 6c. Upon receiving the signal, the control means 6c controls the motor 6e at four levels of rotation speed in accordance with this signal. In other words, the motor is ON
1 signal, the motor 6f is activated by the particle sensor 5a.
The motor is driven at the same rotation speed during the 3 minute period in which the motor is being operated by the motor ON signal from the motor ON signal. When the motor 6f is stopped, it is driven at a rotation speed according to the motor ON1 signal. When a signal of motor ON2 or higher is received, the motor 6e is driven at a rotation speed corresponding to the output. In this embodiment, the relationship between the rotation speed of the motor 6e and each signal is [Motor ON1 signal < Motor ON2 signal < Motor ON
3 signal<motor ON4 signal]. Further, the predetermined time of 3 minutes may be set longer than the time Ta required for the output of the gas sensor to reach 0.9 times the initial value. Further, when the smoker stops smoking, the output of the particle sensor 5a of the operating unit 5 set in the sun visor becomes zero. However, the output of the gas sensor 6d is not zero because it detects remaining dirt components. Therefore, the main body is stopped as follows. The control means 6c receives a signal indicating an output of 0 from the particle sensor 5a, and sends a timing signal for, for example, 3 minutes to the timer 6f. Upon receiving this signal, the timer 6f starts counting for 3 minutes, and when the timing is finished, sends a timing completion signal to the control means 6c. The control means 6c receives this signal and stops the motor 6e.

Next, an embodiment of the fourth means of the present invention will be described based on FIGS. 7 and 8. The operation unit 5a includes a particle sensor 5a that detects smoke particles, and a particle sensor 5a that detects smoke particles.
The particle sensor processing means 5b processes the output of the particle sensor, and the transmitting means 5c transmits the processed data. Further, the main body portion 7 includes the following elements. That is, a receiving means 7a receives the transmission signal from the transmitting means 5c, and a control means 7c decodes the data signal received by the receiving means 7a.
and a received data processing means 7 which outputs a signal to the halving means 7f.
b, motor 7e controlled by halving means 7f;

Next, this operation will be explained. In this embodiment, the operating section 5 is set on the sun visor of the driver's seat, and the main body section 7 is set on the rear tray. Here, the operations of the particle sensor 5a, the particle sensor processing means 5b, and the transmitting means 5c of the operation section 5 are the same as those in the embodiment of the third means of the present invention, and the explanation thereof will be omitted. Figure 8 (
a) is an example of the output of the particle sensor 5a, (b) is the gas sensor 7
d is an output example, and (c) is the drive level of the motor 7e.

Receiving means 7a receiving the motor ON1 signal
sends the received data to the received data processing means 7b,
The received data processing means 7b recognizes the data and turns on the motor.
It is output as one signal to the control means 6c and the halving means 7f. Although the gas sensor 7d constantly detects dirt, it takes time for smoke to reach the rear tray after smoking starts in the driver's seat, and no change in output is observed immediately after smoking starts. Therefore, the data recognized by the gas sensor processing means 7g is
The data is 0, and this data is output to the control means 7c. The control means 7b receives this output signal and the motor ON1 signal, determines that the only dirt component is the output from the particle sensor 5a, and outputs a signal to the halving means 7f. The halving means 7f turns on the motor 7e since the output from the control means 7c is 0 and the output from the received data processing means 7b is the motor ON1 signal. When the motor 7e is turned on, an air current is generated inside the vehicle, and dirt is attracted to the gas sensor 7d, so that the gas sensor 7d starts detecting dirt. This gas sensor 7d
For example, the output is 0.9 times, 0.8 times, 0.7 times the initial value.
When the gas sensor processing means 7g detects that the number has reached 0.6 times, the gas sensor processing means 7g outputs motor ON1, motor ON2, motor ON3, and motor ON4 signals to the control means 7c, respectively. The control means 7c outputs this signal to the halving means 7f. Halving means 7 that received the signal
f is a period in which the motor 7e is operated by the motor ON signal from the particle sensor 5a, the motor 7e is operated by the motor O
Since the motor is operated by the N1 signal, the motor is driven at the same rotation speed until the output from the gas sensor processing means 7g becomes the motor ON2 signal. However, when the motor ON2 signal is exceeded, the rotation speed is reduced by half according to the output of the motor 7.
f drives the motor 6e. Also in this embodiment, the relationship between the rotation speed of the motor 6e and each signal is [motor ON1 signal <
Motor ON2 signal<motor ON3 signal<motor ON4 signal]. Also, when the smoker stops smoking, the particle sensor 5 of the operating part 5 set in the sun visor
The output of a becomes 0. However, the output of the gas sensor 7d is not zero because it detects remaining dirt components. Therefore, the main body is stopped as follows. In response to the output 0 signal from the particle sensor 5a, a signal is output from the transmitting means 5c to the main body section 7. In response to the fact that the output signal from the particle sensor 5a is 0, the received data processing means 7b sends a motor OFF signal to the control means 7c and the halving means 7f. The control means 7c compares this signal with the signal sent from the gas sensor processing means 7g at this point, and outputs a signal to the halving means 7f, indicating that there are still many dirt components in the room. Since the signal from the received data processing means 7b is a motor OFF signal, the half reduction means 7f drives the motor 7e with half the output of the signal from the control means 7c. In other words, if the signal from the gas sensor processing means 7g is the motor ON2 signal,
The control means 7c outputs the motor ON2 signal to the halving means 7f. Further, the halving means 7f drives the motor 7e with a motor ON1 signal that is half of the motor ON2 signal.

In other words, according to this embodiment, the operation of the main body section 7 does not stop immediately after the smoker finishes smoking, but only after the entire room has been purified, and the operation corresponding to the dirt is carried out. Therefore, the operation is smooth and corresponds to the user's experience. Furthermore, since the operation is smooth, noise is also reduced.

Next, an embodiment of the fifth means of the present invention will be explained based on FIGS. 9 and 10. Note that the operation unit used in this embodiment is the same as in each of the embodiments described above, and the explanation thereof will be omitted. The main body portion 8 includes the following elements. 8a and 8b are gas sensors that detect gas components, and gas sensor processing means that process the output of the gas sensor 8a at regular time intervals. In this embodiment, this fixed time is set to 2 seconds. 8c is a storage means for storing the output of the gas sensor processing means 8b and outputting the previous output value to the comparison means 8d. The comparison means 8d is the gas sensor processing means 8.
The output of b is compared with the output of storage means 8c, and this information is transmitted to determination means 8e. The determining means 8e is the comparing means 8
The output of d is determined based on a certain standard, and if it is 0, the data from the gas sensor processing means 8b is output to the control means 8h. If it is smaller than the reference value, it outputs a signal to the first timer means 8f to start counting, and at the same time outputs the data in the storage means 8c to the control means 8h. If it is larger than the reference value, a signal to start timing is output to the second timer means 8g, and at the same time, the data in the storage means 8c is output to the control means 8h. The first timer means 8f and the second timer means 8g are
The predetermined times of 16 seconds and 1 minute are measured respectively. Control means 8
h controls the motor 8i in response to information from the determining means 8e.

The operation of this embodiment will be explained below with reference to FIG. The gas sensor 8a constantly detects dirt, but since it takes time for the dirt to reach the gas sensor 8a, no change in output is observed immediately after smoking starts. Therefore, the data recognized by the gas sensor processing means 8b is 0 both last time and this time. In this embodiment, the rotation speed of the motor 8i is controlled in 10 steps, where 0 indicates stop and 10 indicates the maximum rotation speed. This signal from the gas sensor processing means 8b is transmitted to the storage means 8c and the comparison means 8d. The storage means 8c receiving this output signal outputs this current output and the previous output to the comparison means 8d. In response to this, the comparison means 8d receives the output of the storage means 8c and the signal from the gas sensor processing means 8b, and operates as follows. That is, it sets its own reference value to 4, and outputs a signal indicating whether the difference between the current data and the previous data is 0, larger than the reference value, or smaller than the reference value to the determining means 8c. The determining means 8c receives this signal and operates as follows. That is, when the signal from the comparing means 8c is 0,
The current data from the gas sensor processing means 8b is output as is to the control means 8c. Similarly, if the difference is less than the reference value, a timing signal is sent to the first timer means 8f to start timing, and the previous data from the gas sensor processing means 8b is output to the control means 8c. If the difference is greater than or equal to the reference value, a signal is sent to the second timer means 8g to start timing, and the previous data from the gas sensor processing means 8b is output to the control means 8c. The first timer means 8f to which the timing signal has been sent starts counting a predetermined time of 16 seconds. Similarly, the second timer means 8g is set to 1 for a predetermined period of time.
Start counting the minutes.

Now, in the case of this embodiment, the output from the gas sensor processing means 8b is 0 both this time and the previous time, and the determining means 8e only outputs 0 to the control means 8h, and the output from the first timer means 8f and the first timer means 8f is 0. 2. No timing signal is output to the timer means 8g. Therefore, the control means 8h that receives the signal from the determination means 8e does not drive the motor 8i as shown in the period Ta in FIG. Next, the operation during the period Tb in FIG. 10 will be explained. This period shows that the dirt is rapidly disappearing, and while the drive level of the motor 8i is 5 at Tb0, it drops to 0 at Tb1. The data recognized by the gas sensor processing means 8b at the moment of Tb0 and at the moment two seconds before this is 5, and this signal is output to the comparison means 8d and the storage means 8c. The storage means 8c that receives this signal stores the current output 5 and simultaneously outputs the previous output 5 to the comparison means 8d. In response to this, the comparing means 8d compares this output 5 with the output 5 from the gas sensor processing means 8b, and outputs a signal indicating that the difference is 0 to the determining means 8e. Since the signal from the comparing means 8d is 0, the determining means 8e determines that the gas sensor processing means 8
The current data 5 of b is output as is to the control means 8h. The control means 8h drives the motor 8i using the output 5 as the drive level. At the moment of Tb1, the data recognized by the gas sensor processing means 8b was 0, and the data 2 seconds before this was 5. The storage means 8c outputs this previous output 5 to the comparison means 8d. In response to this, the comparison means 8d outputs a signal to the determination means 8e indicating that the difference between the previous output and the current output is 5, which is larger than the reference value. Judgment means 8
Since this difference is 4 or more, e is the second timer means 8g.
A clock signal is sent to the control means 8h, and at the same time, the previous data 5 is output as is to the control means 8h. The control means 8h drives the motor 8i using the output 5 as the drive level. Second
When the timer means 8g finishes counting the predetermined time of one minute, it sends a timing end signal to the determining means 8e. In response to this, the determination means 8e sends an output of 1/2 of the current output to the control means 8h as the drive level of the motor 8i. (In this case, set 3.) The above operation is repeated until the motor drive level reaches 1. When the motor drive level reaches 1, a motor stop signal is output to the control means 8h. In response to this,
The control means 8h stops the motor 8i.

Next, the operation during the period Tc in FIG. 10 will be explained. This period shows that the dirt is slowly fluctuating. At the moment of Tc1, the gas sensor processing means 8b
The data recognized by T is 3, and the data from 2 seconds before this is T
Assume that the data at the moment of c0 is 4. Storage means 8c
outputs 4, which is the previous output, to the comparison means 8d. In response to this, the comparing means 8d sends data indicating that the difference between the current output and the previous output is less than the reference value to the determining means 8.
Output to e. Upon receiving this data, the determining means 8e sends a timing signal to the first timer means 8g, and at the same time outputs the previous data 4 to the control means 8h. The control means 8h drives the motor 8i using the output 4 as the drive level. When the second timer means 8g finishes counting the predetermined time of 16 seconds, it sends a timing end signal to the determining means 8e. In response to this, the determining means 8e sends 3, which is the output from the gas sensor processing means 8b at that time, to the control means 8h as a drive level.

[0028] As described above, smooth motor rotation control can be performed even in response to sudden changes in dirt, and the operation of the main body will not suddenly stop, and the vehicle-mounted motor will operate according to the actual situation. This realizes an air purifier.

[0029]

Effects of the Invention As described above, according to the first means of the present invention, a dirt sensor is provided in the operation part which is configured to be detachable from the main body, and the output value of the dirt sensor is transmitted to the main body at any time. Therefore, it is possible to provide an on-vehicle air cleaner that operates immediately when the air is dirty. According to the second means of the present invention, the operation unit is equipped with an ultraviolet sensor that detects ultraviolet rays generated from the flame of a lighter lit for smoking,
The main body is equipped with a dirt sensor that detects dirt, and both signals are used to activate and stop the main body, so the air purification speed is uniform and does not vary depending on location.

According to a third aspect of the present invention, the operation section is equipped with a particle sensor for detecting particles contained in cigarette smoke, etc., and the main body is equipped with a gas sensor, and both of these signals are used. When you start smoking, the operation starts immediately with the detection signal from the particle sensor, and the operation ends when you stop smoking and particles contained in cigarette smoke are no longer detected. By configuring the smoker to continue its operation using a gas sensor installed in the smoker, it is possible to perform an operation that matches the smoker's actual feelings. According to the fourth means of the present invention, by adding a half-reducing means to the structure of the third means of the present invention, the operation starts at the same time as smoking, and fine-grained control corresponding to the gas components in the vehicle is started. It is possible to provide an in-vehicle air purifier that performs cleaning and operates according to the user's experience.

Furthermore, according to the fifth means of the present invention, a motor for rotating a fan, a gas sensor for detecting gas components, a gas sensor processing means for processing the output of the gas sensor, and an output from the gas sensor processing means are provided. a storage means for storing and outputting the previous output value; a comparison means for comparing this output with the output from the gas sensor processing means and detecting a difference; and a comparison means for determining the output from the comparison means and determining the result. determining means for changing the output destination according to the determination means; and first timer means for timing a predetermined time based on the output from the determining means.
By providing an on-vehicle air cleaner having a second timer means and a control means for controlling the rotation speed of the motor using outputs from the first timer means, the second timer means, and the determination means, By performing detailed cleaning corresponding to gas components and stopping while operating smoothly, it is possible to provide an in-vehicle air cleaner that operates according to the user's experience.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of an in-vehicle air cleaner showing an embodiment of the first means of the present invention.

[Figure 2] Characteristic diagram showing the output of the dirt sensor

FIG. 3 is a circuit block diagram of an in-vehicle air cleaner showing an embodiment of the second means of the present invention.

[Figure 4] Characteristic diagram showing the output of the same ultraviolet sensor and dirt sensor

[Fig. 5] Circuit block diagram of a vehicle air cleaner showing the third means of the present invention

[Figure 6] Characteristic diagram showing the output of the particle sensor and gas sensor

FIG. 7 is a circuit block diagram of a vehicle air cleaner showing an embodiment of the fourth means of the present invention.

[Figure 8] Diagram showing the output of the particle sensor/gas sensor and an example of motor drive

FIG. 9 is a circuit block diagram of a vehicle air cleaner showing an embodiment of the fifth means of the present invention.

[Fig. 10] A diagram showing an example of driving the same motor.

[Explanation of symbols]

1 Operation section 1a Dirt sensor 1b Dirt sensor processing means 1c Transmission means 2 Main body 2a Receiving means 2b Received data processing means 2c Control means 2d motor 3 Operation section 3a UV sensor 3b Ultraviolet sensor processing means 3c Transmission means 4 Main body 4a Receiving means 4b Received data processing means 4c Timer 4d Dirt sensor 4e Control means 4f motor 5　Operation section 5a　Particle sensor 5b Particle sensor processing means 5c Transmission means 6 Main body 6a Receiving means 6b Received data processing means 6c Control means 6d Dirt sensor 6e Motor 6f Timer 7 Operation section 7a Receiving means 7b Received data processing means 7c Control means 7d Gas sensor 7e Motor 7f　Half reduction means 7g Gas sensor processing means 8a Gas sensor 8b Gas sensor processing means 8c Memory means 8d Comparison means 8e Judgment means 8f First timer means 8g Second timer processing means 8h Control means 8i motor

Claims (5)

[Claims] 1. A removable device comprising a dirt sensor that detects dirt in the air, dirt sensor processing means that processes the output of the dirt sensor into a transmission signal, and transmitting means that transmits the output from the dirt sensor processing means. an operating unit, a motor for rotating the fan, a receiving means for receiving the transmission signal from the transmitting means, a received data processing means for processing the signal received by the receiving means, and an output from the received data processing means. A vehicle-mounted air purifier has a main body portion comprising a control means for controlling a motor and a control means for controlling a motor. 2. A detachable operation device comprising an ultraviolet sensor that detects ultraviolet light, ultraviolet sensor processing means that converts the output of the ultraviolet sensor into a transmission signal, and transmitting means that transmits the output from the ultraviolet sensor processing means. a motor for rotating the fan, a receiving means for receiving the transmission signal from the transmitting means, a received data processing means for processing the signal received by the receiving means, and a receiving data processing means for receiving the output from the received data processing means. , a vehicle-mounted device having a main body comprising a timer for measuring time, a dirt sensor for detecting dirt in the air, and a control means for controlling the motor in response to the output of the timer and the dirt sensor. Air cleaner. 3. A removable operation unit comprising a particle sensor for detecting smoke particles, particle sensor processing means for processing the output of the particle sensor, and transmission means for transmitting the processed data, and a fan. a motor for rotating a motor, a receiving means for receiving a transmission signal from the transmitting means, a received data processing means for processing a signal received by the receiving means, a gas sensor for detecting a gas component, and a gas sensor for processing an output of the gas sensor. a gas sensor processing means; a control means for controlling the motor in response to outputs from the gas sensor processing means and the received data processing means; and an output from the control means.
An in-vehicle air purifier having a main body consisting of a timer that starts timing. 4. A removable operation unit comprising a particle sensor for detecting smoke particles, particle sensor processing means for processing the output of the particle sensor, and transmission means for transmitting the processed data, and a fan. a motor that rotates the motor, a halving means that determines and controls the rotational speed of the motor, a receiving means that receives a transmission signal from the transmitting means, and a signal that is processed by the receiving means and outputted to the halving means. a gas sensor for detecting gas components; a gas sensor processing means for processing the output of the gas sensor; An on-vehicle air purifier having a main body comprising a control means for outputting output. 5. A motor for rotating a fan, a gas sensor for detecting gas components, a gas sensor processing means for processing the output of the gas sensor, and a memory for storing the output from the gas sensor processing means, and storing the previous output value. a storage means for outputting the output, a comparison means for comparing the output with the output from the gas sensor processing means and detecting a difference, a determination means for determining the output from the comparison means and changing the output destination depending on the result; a first timer means and a second timer means for timing a predetermined time based on the output from the determination means; and a control means for controlling the rotation speed of the motor using the output from the first timer means, the second timer means and the determination means. An in-vehicle air purifier with