JP2005140571A - Noncontact temperature sensor for vehicle, and air conditioner for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance precision of temperature detection by a noncontact temperature sensor. <P>SOLUTION: This noncontact temperature sensor for a vehicle is constituted to bring shapes of detecting elements (infrared ray reception part) 71a, 71b, 72a, 72b for receiving an infrared ray emitted from a surface of a temperature detecting object in a cabin into shapes in response to a shape of the temperature detecting object. Temperature detection ranges of the detecting elements 71a, 71b, 72a, 72b in the noncontact temperature sensor 70 are thereby limited within a range in response to the shape of the temperature detecting object to preclude a temperature of an excessive portion other than the temperature detecting object from being detected, and to detect a temperature within the shape range in the whole temperature detecting object, and the precision of the temperature detection by the noncontact temperature sensor 70 is effectively enhanced in combination therewith. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention performs a vehicle non-contact temperature sensor for detecting the temperature of a temperature detection target object in the vehicle interior in a non-contact manner, and air conditioning control in the vehicle interior based on the temperature of the temperature detection target object detected by the non-contact temperature sensor. The present invention relates to a vehicle air conditioner.

  Conventionally, various vehicle air conditioners that perform air conditioning control in a vehicle interior based on the temperature of a temperature detection object detected by a non-contact temperature sensor are known (see, for example, Patent Document 1). Here, the non-contact temperature sensor is specifically an infrared temperature sensor that detects the surface temperature of the temperature detection object based on infrared rays emitted from the surface of the temperature detection object.

Patent Document 1 proposes a vehicle air conditioner that detects a window glass temperature of a vehicle with a non-contact temperature sensor and controls the air conditioning of the passenger compartment based on the detected temperature.
Japanese Patent Laid-Open No. 2001-191779

  However, in Patent Document 1, since only a part of the temperature of the window glass is detected, the detected temperature changes greatly due to the influence of the air blowing direction of the air conditioner, or by the passenger's hand, etc. There is a case where the window glass is hidden and the window glass temperature cannot be accurately detected.

  The present invention has been made in view of the above points, and an object thereof is to improve the accuracy of temperature detection by a non-contact temperature sensor.

  In order to achieve the above object, according to the first aspect of the present invention, the shape of the infrared light receiving portion (71a, 71b, 72a, 72b) that receives infrared rays emitted from the surface of the temperature detection target in the passenger compartment is the temperature detection target. It is characterized by having a shape corresponding to the shape of the.

  According to this, the temperature detection range of the infrared light receiving portions (71a, 71b, 72a, 72b) of the non-contact temperature sensor can be limited to a range according to the shape of the temperature detection object. Therefore, the temperature of an extra part other than the temperature detection object is not detected. In addition, the temperature of the entire shape of the temperature detection object can be detected. Together, these can effectively improve the accuracy of temperature detection by the non-contact temperature sensor.

In a second aspect of the present invention, the vehicle non-contact temperature sensor according to the first aspect is disposed at a front portion of the vehicle interior, and includes at least a passenger in the front seat (2, 3) of the vehicle interior as a temperature detection object. And
As the infrared light receiving part, an infrared light receiving part (71a, 72a) formed in a shape corresponding to the upper body of the front seat occupant is provided. Thereby, the surface temperature of the upper body of the front seat occupant can be detected with high accuracy.

According to a third aspect of the present invention, in the vehicle non-contact temperature sensor according to the second aspect, the left and right side window glasses (91, 92) of the front seat (2, 3) are included as a temperature detection object.
As the infrared light receiving part, the infrared light receiving part (71b, 72b) formed in a shape corresponding to the left and right side window glasses (91, 92) of the front seat (2, 3) is provided. Thereby, the side window glass temperature of the left and right front seats can be detected with high accuracy.

  In the invention according to claim 4, the shape of the infrared light receiving part (71c, 71d, 72c, 72d) that receives infrared rays emitted from the surface of the temperature measurement object in the passenger compartment is seen from the sensor position. It is characterized by having a shape corresponding to the shape of the field of view.

  As a result, even when an obstacle, for example, a seat back portion, is located between the sensor position and the temperature measurement target in the vehicle compartment, the range in which the obstacle is removed, i.e., within the range of the view shape of the temperature detection target. Temperature can be detected. Therefore, the actual temperature of the temperature detection object can be accurately detected without detecting the temperature of the obstacle.

In invention of Claim 5, the non-contact temperature sensor of Claim 4 is arrange | positioned at the vehicle interior front side site | part,
The temperature detection object includes at least a passenger in the rear seat (4) in the vehicle interior, and the infrared light receiving unit includes an infrared light receiving unit (71c, 72c) formed in a shape corresponding to the upper body of the rear seat passenger. And Thereby, the surface temperature of the upper body of the rear seat occupant can be accurately detected.

In the invention according to claim 6, in the non-contact temperature sensor according to claim 5, the left and right side window glass (93, 95) of the rear seat (4) is included as a temperature detection object,
As the infrared light receiving part, the infrared light receiving part (71d, 72d) formed in a shape corresponding to the left and right side window glasses (93, 95) of the rear seat (4) is provided. Thereby, the side window glass temperature on the left and right of the rear seat can be accurately detected.

In the invention according to claim 7, in the non-contact temperature sensor according to claim 1 or 4, the temperature detection object is a plurality of temperature detection objects located at a predetermined part in the passenger compartment.
A plurality of infrared light receiving sections (71a to 71d, 72a to 72d) are provided corresponding to a plurality of temperature detection objects.

  In this way, by providing a plurality of infrared light receiving parts having shapes corresponding to the respective shapes (field-of-view shapes) of the plurality of temperature detection objects, the number of infrared light receiving parts can be reduced and the cost of the non-contact temperature sensor can be reduced. Can be planned.

  The infrared light receiving units (71a to 71d, 72a to 72d) specifically include an infrared absorbing film that absorbs infrared rays and converts the infrared rays into heat, and a thermal response element that outputs an electrical signal corresponding to the heat of the infrared absorbing film. May be configured.

In invention of Claim 8, the non-contact temperature sensor (70) for vehicles as described in any one of Claim 1 thru | or 7,
The vehicle air conditioner includes air conditioning control means (8) for performing air conditioning control in the passenger compartment based on a detection signal of the vehicle non-contact temperature sensor (70).

  Thereby, the air conditioning control in the passenger compartment can be accurately performed based on the detection signal of the vehicle non-contact temperature sensor (70).

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view showing an air outlet arrangement state of an indoor air conditioning unit of the vehicle air conditioner according to this embodiment, and FIG. 2 is an overall configuration diagram including the indoor air conditioning unit and an electric control block.

  In the present embodiment, the air conditioning control is independently performed on a total of four air conditioning zones 1a, 1b, 1c, and 1d in the front, rear, left, and right sides of the vehicle interior 1. FIGS. 1 and 2 show the case of a right-hand drive vehicle. The air conditioning zone 1a is an air conditioning zone on the right side of the front seat, that is, on the driver's seat 2, and the air conditioning zone 1b is air conditioning on the left side of the front seat, that is, on the passenger seat 3 side. It is a zone.

  The air conditioning zone 1c is an air conditioning zone on the right side of the rear seat, and the air conditioning zone 1d is an air conditioning zone on the left side of the rear seat. 1 and 2 indicate the front, rear, left and right directions when the vehicle is mounted.

  The indoor air conditioning unit of the vehicle air conditioner includes a front seat air conditioning unit 5 and a rear seat air conditioning unit 6. The front seat air conditioning unit 5 is for independently adjusting the air conditioning state (for example, air temperature) of the left and right air conditioning zones 1a and 1b of the front seat. This is for independently adjusting the air conditioning states of the left and right air conditioning zones 1c, 1d.

  The front seat air conditioning unit 5 is disposed inside the front instrument panel 7 of the vehicle interior 1, and the rear seat air conditioning unit 6 is disposed at the rearmost of the vehicle interior 1.

  As shown in FIG. 2, the front seat air conditioning unit 5 includes a duct 50 for blowing air to the front seat side of the vehicle interior 1. In the most upstream portion of the duct 50, an inside air introduction port 50a for introducing inside air from the front seat side of the vehicle interior 1 and an outside air introduction port 50b for introducing outside air from the outside of the vehicle interior are provided.

  Further, the duct 50 is provided with an inside / outside air switching door 51 that selectively opens and closes the outside air introduction port 50b and the inside air introduction port 50a. The inside / outside air switching door 51 is provided with a servo motor 51a as a driving means. It is connected.

  A blower 52 that blows air toward the front seat side of the passenger compartment 1 is provided in the duct 50 on the air downstream side of the outside air introduction port 50b and the inside air introduction port 50a. The blower 52 includes a centrifugal impeller and a blower motor 52a that rotates the impeller.

  Further, an evaporator 53 as a front seat side air cooling means for cooling the air is provided in the duct 50 on the air downstream side of the blower 52. Further, a heater core 54 as a front seat side air heating means for heating the air is provided on the air downstream side of the evaporator 53.

  A partition plate 57 is provided in the duct 50 on the air downstream side of the evaporator 53, and the partition plate 57 allows the air passage in the duct 50 to pass through two passages on the left and right sides of the vehicle, that is, the driver's seat side passage 50c. And the passenger seat side passage 50d.

  A bypass passage 50e is formed on the side of the heater core 54 in the driver seat side passage 50c, and a bypass passage 50f is formed on the side of the heater core 54 in the passenger seat side passage 50d. These bypass passages 50 e and 50 f bypass the cool air cooled by the evaporator 53 with respect to the heater core 54.

  In the driver seat side passage 50c and the passenger seat side passage 50d, air mix doors 55a and 55b are provided on the air upstream side of the heater core 54 so as to be independently operable. The driver seat side air mix door 55a adjusts the ratio of the amount of cool air flowing through the driver seat side passage 50c passing through the heater core 54 (warm air amount) and the amount passing through the bypass passage 50e (cold air amount) depending on the opening degree. Then, the temperature of the air blown to the front driver's seat side is adjusted.

  Further, the passenger seat side air mix door 55b has a ratio between the amount of cold air flowing through the passenger seat side passage 50d passing through the heater core 54 (warm air amount) and the amount passing through the bypass passage 50f (cold air amount) depending on the opening degree. To adjust the temperature of air blown to the front passenger seat.

  The left and right air mix doors 55a and 55b are connected to servo motors 550a and 550b as driving means, and the opening degrees of the air mix doors 55a and 55b are independently adjusted by the servo motors 550a and 550b. Is done.

  The evaporator 53 is a low-pressure side cooling heat exchanger that constitutes a well-known refrigeration cycle together with a compressor, a condenser, a receiver, and a decompressor (not shown). The evaporator 53 cools the air in the duct 50 as the low-pressure refrigerant absorbs the latent heat of vaporization and evaporates from the air flowing in the duct 50. The compressor of the refrigeration cycle is connected to the vehicle engine via an electromagnetic clutch (not shown), and is controlled to stop driving by intermittently controlling the electromagnetic clutch.

  The heater core 54 is a heating heat exchanger that heats the air that has passed through the evaporator 53 using hot water (engine cooling water) from the vehicle engine as a heat source.

  Further, a driver seat side face outlet 56a and a passenger seat side face outlet 56b are provided on the air downstream side (most downstream portion) of the heater core 54 in the driver seat side passage 50c and the passenger seat side passage 50d.

  The driver-seat-side face outlet 56a blows air toward the upper body of the driver who sits on the driver's seat 2 from the driver-seat-side passage 50c. Further, the passenger-seat-side face outlet 56b blows air from the passenger-seat-side passage 50d toward the upper body of the passenger seat occupant seated on the passenger seat 3.

  Furthermore, the driver's seat side face outlet 56a is opened and closed at the upstream side of each of the driver's seat side face outlet 56a and the passenger's side face outlet 56b in the driver seat side passage 50c and the passenger seat side passage 50d. A passenger seat side air outlet switching door 56d that opens and closes the driver seat side air outlet switching door 56c and the passenger seat side face air outlet 56b is provided. The air outlet switching doors 56c and 56d are opened and closed by a driver seat side servo motor 56e and a passenger seat side servo motor 56f as driving means, respectively.

  The driver's seat-side face outlet 56a and the passenger's seat-side face outlet 56b are specifically a center face outlet and a center face outlet located at a position near the center of the instrument panel 7, as shown in FIG. It is divided into side face outlets located near both ends of the instrument panel 7 in the left-right direction.

  Although not shown in FIGS. 1 and 2, in addition to the driver-seat-side face outlet 56a, the driver-seat-side foot outlet and the driver-seat-side defroster are provided at the most downstream portion of the driver-seat-side passage 50c. There is an air outlet. The driver-seat-side foot outlet blows air from the driver-seat-side passage 50c to the lower body of the driver. The driver-seat-side defroster outlet blows air from the driver-seat-side passage 50c to the driver-seat-side region on the inner surface of the windshield.

  In the most downstream part of the passenger seat side passage 50d, in addition to the passenger seat face outlet 56b, a passenger seat foot outlet and a passenger seat defroster outlet are provided. The passenger-side foot outlet blows air from the passenger-seat-side passage 50d to the lower half of the passenger seat occupant. The passenger seat side defroster outlet blows air from the passenger seat side passage 50d to the passenger seat side region of the inner surface of the windshield.

  In the driver seat side passage 50c, air outlet switching doors (not shown) for opening and closing the respective air outlets are provided in the air upstream portions of the driver seat side foot outlet and the driver seat side defroster outlet. The air outlet switching doors on the driver's seat side are driven to open and close in conjunction with the above-described servo motor 56e on the driver's seat side.

  Further, in the passenger seat side passage 50d, air outlet switching doors (not shown) for opening / closing the respective air outlets are provided in the air upstream portions of the passenger seat side foot outlet and the passenger seat side defroster outlet. The air outlet switching doors on the passenger seat side are driven to open and close in conjunction with the above-described servo motor 56f on the passenger seat side.

  The rear seat air conditioning unit 6 includes a duct 60 for blowing air to the rear seat side of the vehicle interior 1. Connected to the most upstream part in the duct 60 is an inside air introduction duct 60b that introduces only the inside air from the rear seat side of the vehicle interior 1 through the inside air introduction port 60a.

  A blower 62 that blows air toward the rear seat side of the vehicle interior 1 is provided on the air downstream side of the inside air introduction duct 60b. The blower 62 includes a centrifugal impeller and a blower motor 62a that rotates the impeller.

  In FIG. 2, for simplification of illustration, an axial flow type impeller is illustrated as an impeller of the front seat side blower 52 and the rear seat side blower 62 instead of a centrifugal impeller. Of course, a centrifugal impeller is actually used as the impeller of the blowers 52 and 62.

  Further, an evaporator 63 as a rear seat side air cooling means for cooling the air is provided in the duct 60 on the air downstream side of the blower 62. A heater core 64 as a rear seat side air heating means for heating air is provided on the air downstream side of the evaporator 63.

  A partition plate 67 is provided in the duct 60 at a downstream portion of the evaporator 63, and the partition plate 67 allows the air passage in the duct 60 to be divided into two passages on the left and right sides of the vehicle, that is, the rear right passage (rear seat). It is partitioned into a seat driver side passage 60c and a rear left seat passage (rear passenger seat side passage) 60d.

  A bypass passage 60e is formed on the side of the heater core 64 in the rear seat right passage 60c, and a bypass passage 60f is formed on the side of the heater core 64 in the rear seat left passage 60d. The bypass passages 60e and 60f bypass the cool air cooled by the evaporator 63 with respect to the heater core 64, respectively.

  In the rear seat right passage 60c and the rear seat left passage 60d, air mix doors 65a and 65b are provided on the air upstream side of the heater core 64 so as to be independently operable. The ratio of the amount of air passing through the heater core 64 (warm air amount) and the amount passing through the bypass passage 60e (cold air amount) of the cold air flowing through the rear seat right passage 60c, depending on the opening degree of the air mix door 65a on the right rear seat. To adjust the temperature of the air blown to the right side of the rear seat.

  Further, the air mix door 65b on the left side of the rear seat has, depending on the opening degree, an amount passing through the heater core 64 (warm air amount) and an amount passing through the bypass passage 60f (cold air amount) among the cold air passing through the rear seat left passage 60d. To adjust the temperature of the air blown to the left side of the rear seat.

  Servo motors 650a and 650b as driving means are connected to the right and left air mix doors 65a and 65b, respectively. The opening degree of the left and right air mix doors 65a and 65b is determined by the servo motor 650a, By 650b, each is adjusted independently.

  The evaporator 63 is a cooling heat exchanger that is pipe-coupled in parallel to the front seat side evaporator 53 in the well-known refrigeration cycle described above.

  The heater core 64 is a heating heat exchanger that heats air after passing through the evaporator 63 using hot water (engine cooling water) from the vehicle engine as a heat source. The heater core 64 is connected in parallel with the heater core 54 on the front seat side in the hot water circuit.

  A rear seat right face outlet 66a is provided on the air downstream side (the most downstream portion) of the heater core 64 in the rear seat right passage 60c in the duct 60. The rear seat right face outlet 66a blows air from the rear seat right passage 60c toward the upper body of an occupant seated on the right side of the rear seat (that is, the rear seat driver's seat side) (hereinafter referred to as the rear seat right occupant).

  In addition, a rear seat left face outlet 66b is provided on the downstream side (the most downstream portion) of the heater core 64 in the rear seat left passage 60d in the duct 60. The rear seat left face outlet 66b blows air from the rear seat left passage 60d toward the upper body of the passenger seated on the left side of the rear seat (that is, the rear passenger seat side) (hereinafter referred to as the rear seat left passenger).

  Here, face doors 66c and 66d are respectively provided in the air upstream portions of the left and right rear face outlets 66a and 66b to open and close the left and right rear face outlets 66a and 66b. . The rear door left and right face doors 66c and 66d are opened and closed by servomotors 660c and 660d as driving means.

  Although not shown in FIGS. 1 and 2, a rear seat right foot outlet is provided in the most downstream portion of the rear seat right passage 60c in addition to the rear seat right face outlet 66a. This rear seat right foot outlet blows air from the rear seat right passage 60c toward the lower half of the rear seat right passenger.

  Similarly, a rear seat left foot outlet is provided in the most downstream portion of the rear seat left passage 60d in addition to the rear seat left face outlet 66b. The rear seat left foot outlet blows air from the rear seat left passage 60d toward the lower half of the rear left passenger.

  Foot doors (not shown) are respectively provided in the air upstream portions of the left and right foot outlets of the rear seats. The left and right foot doors of the rear seats are face doors 66c and 66d by the servo motors 660c and 660d. It is driven to open and close in conjunction with.

  The air conditioner ECU 8 constitutes an air conditioner control device (air conditioner control means). The input side of the air conditioner ECU 8 includes an outside air temperature sensor 81, a vehicle engine coolant temperature sensor 82, a solar radiation sensor 83, a front seat side, and a rear seat. The seat side inside air temperature sensors 84, 85 and the front seat side and rear seat side evaporator temperature sensors 86, 87 are connected.

  The outside air temperature sensor 81 detects the outside air temperature outside the passenger compartment, and inputs an outside air temperature signal Tam corresponding to the detected temperature to the air conditioner ECU 8. The cooling water temperature sensor 82 detects the temperature of the cooling water (that is, hot water) of the vehicle engine, and inputs a cooling water temperature signal Tw corresponding to the detected temperature to the air conditioner ECU 8.

  As shown in FIG. 1, the solar radiation sensor 83 is disposed at a substantially central portion in the left-right direction of the vehicle on the upper surface of the instrument panel 7 (inner side of the vehicle front window), and detects the amount of solar radiation incident on the vehicle interior. The solar radiation amount signal Ts corresponding to the detected solar radiation amount is input to the air conditioner ECU 8.

  The front seat side inside air temperature sensor 84 detects the air temperature in the air conditioning zones 1a and 1b (front seat side air conditioning regions) on the front seat side of the vehicle interior, and inputs an inside air temperature signal TrFr corresponding to the detected temperature to the air conditioner ECU 8.

  The rear seat side inside air temperature sensor 85 detects the air temperature in the air conditioning zones 1c and 1d (rear seat side air conditioning regions) on the rear seat side of the vehicle interior, and inputs an inside air temperature signal TrRr corresponding to the detected temperature to the air conditioner ECU 8.

  The front seat evaporator temperature sensor 86 detects the temperature of air blown from the front seat evaporator 53 and inputs an evaporator blow temperature signal TeFr corresponding to the detected temperature to the air conditioner ECU 8. The temperature sensor 87 detects the blown air temperature of the rear seat side evaporator 63 and inputs an evaporator blown temperature signal TeRr corresponding to the detected temperature to the air conditioner ECU 8.

  Further, four temperature setting switches 9, 10, 11, 12 that can be operated by a passenger are connected to the input side of the air conditioner ECU 8. The set temperature signals TsetFrDr, TsetFrPa, TsetRrDr, and TsetRrPa set by the occupant corresponding to each of the four air conditioning zones 1a, 1b, 1c, and 1d in the passenger compartment from these four temperature setting switches 9 to 12 are sent to the air conditioner ECU8. Entered. In the vicinity of each of the temperature setting switches 9 to 12, there are provided displays 9a, 10a, 11a, and 12a as setting temperature display means for displaying setting contents such as a setting temperature.

  Further, an infrared temperature (IR) sensor 70 as a non-contact temperature is connected to the input side of the air conditioner ECU 8. In the present embodiment, the infrared temperature sensor 70 is disposed in the vicinity of the center in the vehicle left-right direction (the upper portion of the solar radiation sensor 83) at the front portion of the vehicle interior ceiling.

  The air conditioner ECU 8 is a well-known one having an analog / digital converter, a microcomputer, etc., and includes a solar radiation sensor 83, temperature sensors 81, 82, 84, 85, 86, 87, an infrared temperature sensor. 70 and the temperature setting switches 9, 10, 11, and 12 are configured so that output signals output from the temperature setting switches 9, 10, 11, and 12 are analog / digital converted by an analog / digital converter and input to the microcomputer.

  The microcomputer is a well-known computer composed of a memory such as a ROM and a RAM, a CPU (Central Processing Unit), and the like, and is supplied with power from a battery (not shown) when an ignition switch is turned on.

  The infrared temperature sensor 70 is configured using a thermopile detection element (hereinafter, abbreviated as “detection element”) in which the electromotive force increases or decreases in response to an increase or decrease in the amount of infrared rays incident from the temperature detection object. That is, the infrared temperature sensor 70 electrically detects the temperature change of the temperature detection object as the electromotive force change of the detection element.

  FIG. 3 illustrates a specific configuration of the infrared temperature sensor 70, and includes a driver seat side detection unit 71 and a passenger seat side detection unit 72. Each of the detection units 71 and 72 includes a plurality of the detection elements, and the plurality of detection elements are arranged in a predetermined shape.

  Infrared rays emitted from the temperature detection objects in the air conditioning zones 1a and 1c before and after the driver's seat side (the vehicle right side) are collected by the driver's seat side detection unit 71 and incident. In addition, infrared rays emitted from the temperature detection objects in the front and rear air conditioning zones 1b and 1d on the passenger seat side are collected by the passenger seat side lens 74 and incident on the passenger seat side detection unit 72.

  Here, as described above, the infrared temperature sensor 70 is disposed near the center in the vehicle left-right direction of the ceiling portion on the front side of the vehicle interior, so that the driver seat side detection unit 71, the driver seat side lens 73, and the passenger seat side The detection unit 72 and the passenger seat side lens 74 are respectively disposed so as to be inclined obliquely outward and to the left and right by a predetermined angle θ1 with respect to the line A in the vehicle front-rear direction at the vehicle center.

  Accordingly, in the illustrated example of FIG. 3, the infrared rays from the rear of the vehicle with respect to the driver seat side detection unit 71 and the passenger seat side detection unit 72 are at a predetermined angle θ2 (θ2 = 2 × θ1), for example, about 85 °. It is incident over a range.

  Each of the lenses 73 and 74 is a single lens made of a material having a high infrared transmittance.

  Each of the predetermined number of detection elements constituting the driver seat side detection unit 71 and the passenger seat side detection unit 72 absorbs infrared rays incident through the lenses 73 and 74 and converts them into heat as is well known, and And a thermocouple portion that forms a thermal response element that generates an electromotive force according to the amount of heat generated by the infrared absorption film.

  In FIG. 3, an electronic circuit 75 is a circuit unit to which the electromotive force of each detection element of the driver seat side detection unit 71 and the passenger seat side detection unit 72 is input, and is connected to the input side of the air conditioner ECU 8 by a connector 76.

  Next, the specific arrangement form of the detection elements of both detection units 71 and 72 in the infrared temperature sensor 70, in other words, the specific shape of the infrared light reception unit of both detection units 71 and 72 is based on FIG. 4 and FIG. I will explain. In FIGS. 4 and 5, in order to clearly show the shape of the infrared light receiving portion, a fine dot is given to the region of the infrared light receiving portion.

  FIG. 4 is a view of the rear of the vehicle interior as seen from the front window glass side of the vehicle. In the infrared temperature sensor 70, the specific example of the shape of the infrared light receiving portion on the front seat side of the two detecting portions 71 and 72 is shown enlarged. Yes. 71a and 71b are detection elements in the driver seat side detection unit 71 of the infrared temperature sensor 70, and the detection element 71a has a shape corresponding to the shape of the upper body of the driver seated in the driver seat 2 of the front seat. .

  That is, the temperature detection object of the detection element 71a is the upper body of the driver. Therefore, the three detection elements 71a are stacked in the vertical direction in two rows, and further, the operation is performed at the upper center portion of the two-layer stacking arrangement. It has a shape in which one detection element 71a corresponding to the person's face is laminated. With the combined shape of the seven detection elements 71a in total, the shape of the infrared light receiving part is formed in a shape corresponding to the shape of the temperature detection object (the upper body of the driver).

  Here, the infrared light receiving portion is a generic term for the thermocouple portion of the detection element 71a and the infrared absorption film disposed on the thermocouple portion. The same applies to detection elements other than the reference numeral “71a” described below.

  Further, the temperature detection object of the detection element 71b is the side window glass 91 on the side of the driver's seat 2, and therefore the detection element 71b has a shape corresponding to the shape of the side window glass 91 on the side of the driver's seat 2 on the front seat. ing. Here, since the temperature distribution in the side window glass 91 is small, the detection element 71 b is configured by one detection element having a shape corresponding to the overall shape of the side window glass 91. Therefore, the infrared absorption film disposed on the detection element 71b also has a shape corresponding to the overall shape of the side window glass 91.

  Next, 72a and 72b are detection elements in the passenger seat side detection unit 72 of the infrared temperature sensor 70, and the detection element 72a has a shape corresponding to the shape of the upper half of the passenger seat passenger seated in the front passenger seat 3. It has become.

  That is, the temperature detection object of the detection element 72a is the upper body of the passenger on the passenger seat, and therefore, three detection elements 72a are stacked in two rows in the vertical direction, and further, in the center of the upper end of the two-layer stacking arrangement. It has a shape in which one detection element 72a corresponding to the face of the passenger on the passenger seat is stacked. With the combined shape of the seven detection elements 72a in total, the shape of the infrared light receiving portion is formed according to the shape of the temperature detection object (the upper body of the passenger on the passenger seat).

  Further, the temperature detection object of the detection element 72b is the side window glass 92 on the side of the passenger seat 3, and therefore the detection element 72b has a shape corresponding to the shape of the side window glass 92 on the side of the front passenger seat 3. ing. Here, since the temperature distribution of the side window glass 92 is also small, the detection element 72 b is configured by one detection element having a shape corresponding to the overall shape of the side window glass 92. Therefore, the infrared absorption film disposed on the detection element 72b also has a shape corresponding to the overall shape of the side window glass 92.

  FIG. 5 is a view of the rear side of the vehicle interior as seen from the front windshield side of the vehicle, as in FIG. The enlarged view is shown. Reference numerals 71 c, 71 d, and 71 e are detection elements of the rear seat right side (rear seat driver seat side) detection section of the driver seat side detection section 71 of the infrared temperature sensor 70, and 72 c, 72 d, and 72 e are the infrared temperature sensor 70. It is a detection element of the rear seat left side (rear seat front passenger seat side) detection unit in the passenger seat side detection unit 72.

  The detection elements 71c, 71d, 71e that detect the temperature of the temperature detection object on the right side of the rear seat and the detection elements 72c, 72d, 72e that detect the temperature of the temperature detection object on the left side of the rear seat both have a sensor position (front of the vehicle interior). The shape is in accordance with the shape of the field of view when the temperature measurement object is viewed from the side center of the side ceiling).

  More specifically, the temperature detection object of the detection element 71c is the upper half of the right rear passenger, and the upper part of the rear right passenger is blocked by the backrest of the driver seat 2 in the vicinity of the abdomen. . Therefore, the field of view when the rear seat right occupant is viewed from the sensor position is limited to the upper part of the upper half of the rear seat right occupant from the abdomen.

  Therefore, two detection elements 71c are stacked in two rows in the vertical direction, and one detection element 71c corresponding to the face portion of the right rear passenger is stacked in the center of the upper end of the two-row stacking arrangement. It has a shape. With the combined shape of the five detection elements 71c in total, the shape of the infrared light receiving portion is formed in the shape of the field of view of the temperature detection object (the upper half of the rear right passenger) from the sensor position.

  Next, the temperature detection object of the detection element 71d is the side window glass 93 on the right side of the rear seat, and the shape of the field of view when the side window glass 93 is viewed from the sensor position is the lower part of the window glass due to the backrest portion of the driver seat 2. Since it is intercepted, it becomes a substantially rectangular shape in which the longitudinal direction of the vehicle is the long side direction. Therefore, the detection element 71d is formed in a substantially rectangular shape corresponding to the view shape of the side window glass 93 on the right side of the rear seat.

  Further, the temperature detection object of the detection element 71e is the right side portion of the vehicle rear window glass 94, and the view shape when the right side portion of the vehicle rear window glass 94 is viewed from the sensor position is the central portion side in the vehicle left-right direction. It has a substantially rectangular shape with a high height and a low height on the right end side in the vehicle left-right direction.

  Therefore, the detection element 71e is also formed in a substantially rectangular shape corresponding to the substantially rectangular view shape of the right side portion of the vehicle rear window glass 94. Each of the detection elements 71d and 71e is composed of one detection element.

  On the other hand, of the detection elements 72c, 72d, 72e for detecting the temperature of the temperature detection object on the left side of the rear seat, the temperature detection object of the detection element 72c is the upper body of the left rear passenger, and the detection element 72c includes the detection element 71c. It has a symmetrical shape. Further, the temperature detection object of the detection element 72d is a side window glass 95 on the left side of the rear seat, and the detection element 72d has a shape symmetrical to the detection element 71d. Further, the temperature detection target of the detection element 72e is the left side portion of the vehicle rear window glass 94, and the detection element 72e has a symmetrical shape with the detection element 71e.

  Next, the operation of the present embodiment in the above configuration will be described with reference to FIGS.

  When the vehicle ignition switch is turned on and power is supplied, the air conditioner ECU 8 starts a control program (computer program) stored in the memory, and executes air conditioning control processing according to the flowchart shown in FIG. FIG. 6 is a diagram showing an overview of the entire air conditioning control process. Hereinafter, the air conditioning control process will be described by dividing it into a front seat air conditioning control process and a rear seat air conditioning control process with reference to FIG.

  First, the front seat air conditioning control process will be described. First, in step S121, the driver seat side set temperature signal TsetFrDr and the passenger seat side set temperature signal TsetFrPa are read from the temperature setting switches 9 and 10 on the left and right of the front seat.

  Next, various sensor detection signals are read in step S122. That is, the outside air temperature signal Tam, the solar radiation amount signal Ts, and the front seat side inside air temperature signal TrFr are read from the outside air temperature sensor 81, the solar radiation sensor 83, and the front seat side inside air temperature sensor 84, respectively. Further, detection signals (details will be described later) of the driver seat side detection unit 71 and the passenger seat side detection unit 72 of the infrared temperature sensor 70 are read.

  Next, in step S123, the target blowing temperature TAOFrDr of the front seat driver seat side air conditioning zone 1a and the target blowing temperature TAOFrPa of the front seat passenger seat side air conditioning zone 1b are calculated. Here, the target blowing temperatures TAOFrDr and TAOFrPa are necessary for maintaining the temperatures of the air-conditioning zones 1a and 1b at the set temperatures TsetFrDr and TsetFrPa, respectively, regardless of changes in the vehicle environmental conditions (air-conditioning heat load conditions). The target temperature.

  FIG. 7 shows a specific control process for calculating the target blowing temperatures TAOFrDr and TAOFrPa on the front seat side. First, in step S1231, the driver side solar radiation correction coefficient fFrDr and the passenger side solar radiation correction coefficient fFrPa are calculated. Calculation is based on the temperature difference between the left and right side window glasses on the front seat side.

  Here, the side window glass temperature on the front seat driver seat side (right side) is a temperature detected by the detection element 71b (FIG. 4) in the driver seat side detector 71 of the infrared temperature sensor 70, and the front seat. The side window glass temperature on the passenger seat side (left side) is a temperature detected by the detection element 72 b (FIG. 4) in the passenger seat side detection unit 72 of the infrared temperature sensor 70.

  The control characteristic in step S1231 in FIG. 7 determines the relationship between the temperature difference between the left and right side window glasses on the front seat side and both coefficients fFrDr and fFrPa, and is preset and stored in the memory of the microcomputer. Therefore, by calculating the temperature difference between the left and right side window glasses on the front seat side, both coefficients fFrDr and fFrPa can be determined based on this temperature difference.

  Specifically, the driver side solar radiation correction coefficient fFrDr indicated by the solid line is determined so as to increase as the temperature difference increases. Further, the passenger seat side solar radiation correction coefficient fFrPa is determined to decrease conversely as the temperature difference increases.

  As can be seen from the control characteristics of step S1231 in FIG. 7, the solar radiation direction is detected based on whether the left and right side window glass temperature difference values are positive or negative, and by calculating these coefficients fFrDr, fFrPa, The partial solar radiation correction can be performed for each of the front seats 2 and 3.

  Next, in step S1232, the driver seat side solar radiation amount TsFrDr and the passenger seat side solar radiation amount TsFrPa are calculated. More specifically, the driver's seat side solar radiation amount TsFrDr is calculated by multiplying the solar radiation amount Ts detected by the solar radiation sensor 83 into the driver's seat side solar radiation correction coefficient fFrDr, and the passenger's seat is added to the solar radiation amount Ts. By multiplying the side solar radiation correction coefficient fFrPa, the passenger side solar radiation amount TsFrPa is calculated.

  Next, in step S1233, the front driver's seat side target blowing temperature TAOFrDr is calculated based on the following formula (1) stored in advance in the memory.

TAOFrDr = KsetFrDr × TsetFrDr
-Kir * FrDrTir-KrFr * TrFr
−KsFr × TsFrDr−Kam × Tam + CFrDr (Formula 1)
In Formula 1, TsetFrDr is a driver seat side set temperature set by the driver seat side temperature setting switch 10.

  FrDrTir is the surface temperature of the driver on the right side of the front seat, and this FrDrTir is the temperature detected by the detection element 71 a in the driver seat side detection unit 71 of the infrared temperature sensor 70. Specifically, the average value {FrDrTir = (Ta1 + Ta2... + Ta7) / 7} of the detection temperatures Ta1 to Ta7 of the seven detection elements 71a.

  Next, TrFr is the front seat side inside air temperature detected by the front seat side inside air temperature sensor 84. Further, TsFrDr is the amount of solar radiation to the front seat driver seat area calculated in step S1232. Tam is the outside temperature detected by the outside temperature sensor 81.

  In Equation 1, KsetFrDr, Kir, KrFr, KsFr, and Kam are control gains (coefficients), and CFrDr is a constant.

  In step S1233, the front passenger's seat side target blowing temperature TAOFrPa is calculated based on the following mathematical formula (2).

TAOFrPa = KsetFrPa × TsetFrPa
−Kir × FrPaTir−KrFr × TrFr
−KsFr × TsFrPa−Kam × Tam + CFrPa (Formula 2)
In Equation 2, TsetFrPa is the passenger seat side set temperature set by the passenger seat side temperature setting switch 9.

  FrPaTir is the surface temperature of the passenger on the left side of the front seat, and FrPaTir is the temperature detected by the detection element 72 a in the passenger seat side detection unit 72 of the infrared temperature sensor 70. Specifically, it is an average value {FrPaTir = (Tb1 + Tb2... + Tb7) / 7} of the detection temperatures Tb1 to Tb7 of the seven detection elements 72a.

  Next, TrFr is the same air temperature at the front seat as in Equation 1. TsFrPa is the amount of solar radiation to the front passenger seat area calculated in step S1232. Tam is the same outside air temperature as Formula 1.

  In Equation 2, KsetFrPa, Kir, KrFr, KsFr, and Kam are control gains (coefficients), and CFrPa is a constant.

  Next, in step S124 of FIG. 6, the inside / outside air mode is determined based on the average value of TAOFrPa and TAOFrDr (hereinafter referred to as the front seat target blowing temperature average value). Specifically, when the front-seat target blowout temperature average value is in a predetermined low-temperature region, the inside / outside air mode is set to a 100% inside-air circulation mode, and the front-seat target blowout temperature average value is a predetermined high-temperature region. When it is, the inside / outside air mode is set to the outside air introduction mode with 100% outside air. When the average target blowing temperature for the front seat is in the intermediate temperature region between the low temperature side region and the high temperature side region, the inside / outside air mode is set to the inside / outside air mixing mode in which both the inside air and the outside air are introduced simultaneously. .

  Next, in step S125, the blowing mode on the front seat driver seat side is determined based on TAOFrDr, and the blowing mode on the front seat passenger seat side is determined based on TAOFrPa. Specifically, as TAOFrDr rises from the low temperature side, the blowing mode of the air-conditioning zone 1a on the front seat driver's seat side is automatically automatically performed in the order of face (FACE) mode → bilevel (B / L) mode → foot (FOOT) mode. Switch.

  Similarly, as TAOFrPa rises from the low temperature side, the blowing mode of the air-conditioning zone 1b on the front passenger's seat is automatically sequentially changed from the face (FACE) mode to the bi-level (B / L) mode to the foot (FOOT) mode. Switch.

  Next, the blower voltage applied to the front seat side blower motor 52a is determined based on the above-mentioned average value for the front seat target blowing temperature in step S126. The rotational speed of the blower motor 52a is changed by this blower voltage, whereby the air volume of the front seat side blower 52 can be controlled. When the average target blowout temperature for the front seats is in the specified low temperature region and high temperature region, the blower voltage is increased to increase the air volume, and the front target blowout temperature average value is When the temperature is in the intermediate temperature range between the side regions, the blower voltage is determined so as to lower the blower voltage.

  Next, in step S127, the target opening degree SWFrDr of the air mixing door 55a on the front seat driver's seat side is calculated by the following equation 3, and the target opening degree SWFrPa of the air mixing door 55b on the front passenger seat side is calculated as follows. Calculated using Equation 4.

SWFrDr = {(TAOFrDr−TeFr) / (Tw−TeFr)} × 100 (%) (Formula 3)
SWFrPa = {(TAOFrPa−TeFr) / (Tw−TeFr)} × 100 (%) (Formula 4)
In Formulas 3 and 4, TeFr is the front-seat evaporator outlet temperature detected by the front-seat evaporator temperature sensor 86, and Tw is the cooling water (hot water) temperature detected by the cooling water temperature sensor 82. SWFrDr and SWFrPa = 0% are maximum cooling positions, and the entire amount of air (cold air) after passing through the evaporator 53 flows through the bypass passages 50e and 50f in the driver seat side passage 50c and the passenger seat side passage 50d. SWFrDr and SWFrPa = 100% are maximum heating positions, and the entire amount of air (cold air) after passing through the evaporator 53 flows into the heater core 54 and is heated in the driver seat side passage 50c and the passenger seat side passage 50d.

  In step S128, the control signals indicating the inside / outside air switching mode, the blowing mode, the blower voltage, the target opening degree SWFrDr and the SWFrPa determined as described above are supplied to the servo motors 51a, 550a, 550b, 56e, 56f, and the blower motor 52a. The operation of the blower 52, the inside / outside air switching door 51, the outlet switching doors 56c and 56d, the air mixing doors 55a and 55b, and the like are controlled.

  Thereafter, in step S128, when a certain time τ has elapsed, the process returns to step S121, and the above-described air conditioning control process (steps S121 to S129) is repeated. By repeating such calculation and processing, air conditioning in the front seat air conditioning zones 1a and 1b is automatically controlled.

  Next, the rear seat air conditioning control process will be described. In the air conditioning control process on the rear seat side, the description of the common part with the front seat side is simplified. First, in step 121, set temperature signals TsetRrDr and TsetRrPa are read from the temperature setting switches 11 and 12 on the left and right sides of the rear seat.

  Next, in step S122, various sensor signals are read as in the case of the front seat side. Next, in step S123, the target blowing temperature TAORrDr of the rear right seat (driver's seat) air conditioning zone 1c and the target blowing temperature TAORrPa of the rear seat left (passenger seat) air conditioning zone 1d are calculated. Here, the target blowing temperatures TAORrDr and TAORrPa are necessary for maintaining the temperatures of the air-conditioning zones 1c and 1d at the set temperatures TsetRrDr and TsetRrPa, respectively, regardless of changes in the vehicle environmental conditions (air-conditioning heat load conditions). The target temperature.

  FIG. 8 is a specific control process for calculating the target air temperature TAORrDr and TAORrPa on the rear seat side. First, in step S1234, the rear seat right solar radiation correction coefficient fRrDr and the rear seat left solar radiation correction coefficient fRrPa are calculated. Calculated based on the temperature difference between the left and right rear window glass.

  Here, the rear window right side (driver's seat side) window glass temperature is detected from the rear seat right side window glass temperature detected by the detection element 71d (FIG. 5) in the driver seat side detection unit 71 of the infrared temperature sensor 70. It is an average value with the vehicle rear window glass right side temperature detected by the element 71e (FIG. 5). Further, the window glass temperature on the left side of the rear seat (passenger seat side) is detected by the detection element 72d (FIG. 5) of the passenger seat side detection unit 72 of the infrared temperature sensor 70 and the detection element. It is an average value with the vehicle rear window glass left side temperature detected by 72e (FIG. 5).

  Accordingly, the difference between the left and right window glass temperatures in step S1234 is the difference between the average value of the two window glass temperatures on the right side of the rear seat and the average value of the two window glass temperatures on the left side of the rear seat. is there. It should be noted that the temperature detection of the right and left sides of the rear window glass of the vehicle is stopped, and the solar radiation correction coefficient fRrDr on the left and right sides of the rear seat is based only on the temperature difference between the side window glass temperatures on the left and right of the rear seat, as in the processing on the front seat side. , FRrPa may be calculated.

  The control characteristic of step S1234 in FIG. 8 determines the relationship between the left and right window glass temperature difference on the rear seat side and both coefficients fRrDr, fRrPa, and is preset and stored in the memory of the microcomputer. Therefore, by obtaining the difference between the left and right window glass temperatures on the rear seat side, both coefficients fRrDr and fRrPa can be determined based on this temperature difference.

  Specifically, the rear seat right solar radiation correction coefficient fRrDr indicated by the solid line is determined to increase as the temperature difference increases. Further, the rear seat left side solar radiation correction coefficient fRrPa is determined so as to decrease conversely as the temperature difference increases.

  As can be seen from the control characteristics of FIG. 8, the solar radiation direction is detected depending on whether the temperature difference between the left and right side window glass is positive or negative. By calculating both coefficients fRrDr and fRrPa, the rear seat 4 The solar radiation correction for each of the left and right air conditioning zones 1c and 1d can be performed.

  In step S1235, the rear seat right solar radiation amount TsRrDr and the rear seat left solar radiation amount TsRrPa are calculated. Specifically, the rear seat right solar radiation correction coefficient fRrDr is calculated by multiplying the solar radiation amount Ts detected by the solar sensor 83 into the vehicle interior, and the rear seat right solar radiation amount TsRrDr is calculated. The left-side solar radiation amount TsRrPa is calculated by multiplying the left-side solar radiation correction coefficient fRrPa.

  Next, in step S1236, the rear seat right target blowing temperature TAORrDr is calculated based on the following formula (5) stored in advance in the memory.

TAORrDr = KsetRrDr × TsetRrDr
−Kir × RrDrTir−KrRr × TrRr
−KsRr × TsRrDr−Kam × Tam + CRrDr (Formula 5)
In Formula 5, TsetRrDr is the rear seat right side set temperature set by the rear seat right side temperature setting switch 11.

  RrDrTir is the surface temperature of the rear right passenger, and this RrDrTir is the temperature detected by the detection element 71c (FIG. 5) in the driver seat side detection unit 71 of the infrared temperature sensor 70. Specifically, the average value {RrDrTir = (Tc1 + Tc2... + Tc5) / 5} of the detection temperatures Tc1 to Tc5 of the five detection elements 71c.

  Next, TrRr is the rear seat side air temperature detected by the rear seat side air temperature sensor 85. TsRrDr is the amount of solar radiation to the right rear seat area calculated in step S1235. Tam is the outside temperature detected by the outside temperature sensor 81.

  In Equation 5, KsetRrDr, Kir, KrRr, KsRr, and Kam are control gains (coefficients), and CRrDr is a constant.

  In step S1236, the rear seat left target blowing temperature TAORrPa is calculated based on the following equation (6).

TAORrPa = KsetRrPa × TsetRrPa
−Kir × RrPaTir−KrRr × TrRr
−KsRr × TsRrPa−Kam × Tam + CRrPa (Formula 6)
In Equation 6, TsetRrPa is the rear seat left side set temperature set by the rear seat left side temperature setting switch 12.

  RrPaTir is a surface temperature of the rear left passenger, and this RrPaTir is a temperature detected by the detection element 72c (FIG. 5) in the passenger seat side detection unit 72 of the infrared temperature sensor 70. Specifically, the average value {RrPaTir = (Td1 + Td2... + Td5) / 5} of the detection temperatures Td1 to Td5 of the five detection elements 72c.

  Next, TrRr is the same air temperature at the rear seat side as in Equation 5. TsRrPa is the amount of solar radiation to the left rear seat area calculated in step S1235. Tam is the same outside air temperature as Formula 5.

  In Equation 6, KsetRrPa, Kir, KrRr, KsRr, and Kam are control gains (coefficients), and CRrPa is a constant.

  Next, the process proceeds to step S125 in FIG. 6, and the right and left blowing modes for the rear seat are determined based on the rear seat right target blowing temperature TAORrDr and the rear seat left target blowing temperature TAORrPa. The rear seat blowing mode determination may be performed in the same manner as the front seat blowing mode determination. Note that the determination of the inside / outside air mode in step S124 in FIG. 6 is a control process only on the front seat side, and thus is not performed in the control process on the rear seat side.

  Next, in step S126, the blower voltage to be applied to the rear seat side fan motor 62a is determined based on the average value of the target air outlet temperatures TAORrDr and TAORrPa on the left and right sides of the rear seat, that is, the target air outlet temperature average value for the rear seat. To do. The determination of the rear seat side blower voltage may be performed in the same manner as the determination of the front seat side blower voltage.

  Next, in step S127, the target opening degree SWRrDr of the right air mixing door 65a on the right rear seat is calculated by the following formula 7, and the target opening degree SWRrPa of the left air mixing door 65b is calculated by the following formula 8. To do.

SWRrDr = {(TAORrDr−TeRr) / (Tw−TeRr)} × 100 (%) (Formula 7)
SWRrPa = {(TAORrPa−TeRr) / (Tw−TeRr)} × 100 (%) (Equation 8)
In Equations 7 and 8, TeRr is the rear-seat evaporator outlet temperature detected by the rear-seat evaporator temperature sensor 87, and Tw is the cooling water (hot water) temperature detected by the cooling water temperature sensor 82.

  SWRrDr and SWRrPa = 0% are the maximum cooling positions, and the entire amount of air (cold air) after passing through the rear seat side evaporator 63 flows through the bypass passages 60e and 60f in the rear seat right passage 60c and the rear seat left passage 60d. Further, SWRrDr and SWRrPa = 100% are maximum heating positions, and the entire amount of air (cold air) after passing through the rear seat side evaporator 53 flows into the heater core 64 in the rear seat right passage 60c and the rear seat left passage 60d and is heated. Is done.

  In step S128, the servo motors 650a, 650b, 660c, the control signals indicating the rear seat side blowing mode, the rear seat side blower voltage, and the rear seat side air mix door target opening SWRrDr and SWRrPa determined as described above are set. 660d and the blower motor 62a are output to control the operations of the rear seat side blower 62, the rear seat side outlet switching doors 66c and 66d, the rear seat side air mix doors 65a and 65b, and the like.

  Thereafter, in step S128, when a certain time τ has elapsed, the process returns to step S121, and the above-described air conditioning control process (steps S121 to S129) is repeated. By repeating such calculation and processing, the air conditioning of the rear seat air conditioning zones 1c and 1d is automatically controlled.

  When performing the air conditioning control process as described above, in the infrared temperature sensor 70 according to the present embodiment, the detection elements 71a, 71b, 72a, 72b on the front seat side are respectively formed in the shape of the temperature detection object on the front seat side as shown in FIG. According to the shape. Specifically, since the detection elements 71a and 72a have shapes corresponding to the upper body of the passengers (drivers and passengers) in the front seats 2 and 3 in the vehicle interior, the temperature detection ranges of the detection elements 71a and 72a are set in front. It can be limited to the upper body of the seat occupant.

  Therefore, the detection elements 71a and 72a do not detect the temperature of an extra part other than the upper body of the front seat occupant. In addition, the temperature of the shape of the entire upper body of the front seat occupant can be detected. Together, these can detect the upper body temperature of the front seat occupant with high accuracy by the detection elements 71a and 72a.

  Moreover, since the detection elements 71b and 72b have shapes corresponding to the shapes of the left and right side window glasses 91 and 92 of the front seats 2 and 3 in the vehicle interior, the temperature detection ranges of the detection elements 71b and 72b are It can be limited to the range of the side window glasses 91 and 92.

  Therefore, the detection elements 71b and 72b do not detect the temperature of an extra portion other than the side window glasses 91 and 92. Moreover, the temperature of the entire shape of the side window glasses 91 and 92 can be detected. In combination, the detection elements 71b and 72b can accurately detect the temperatures of the left and right side window glasses 91 and 92 on the front seat side.

  Further, in the infrared temperature sensor 70, the detection elements 71c, 71d, 71e, 72c, 72d, 72e on the rear seat side correspond to the field of view when the temperature measurement object on the rear seat side is viewed from the sensor position as shown in FIG. It has a different shape. Specifically, each of the detection elements 71c and 72c has a shape corresponding to the shape of the field of view of the left and right passengers in the rear seat 4 from the sensor position. For this reason, the temperature detection range of the detection elements 71c and 72c can be limited to the view range of the rear seat occupant from the sensor position.

  Therefore, even if an obstacle, for example, the seat back portion of the front seats 2 and 3 in the vehicle interior is located between the sensor position and the rear seat occupant, the range in which the obstacle is removed, that is, the sensor of the rear seat occupant The temperature within the range of the view shape from the position can be detected by the detection elements 71c and 72c. As a result, the actual temperature of the rear seat occupant can be accurately detected without detecting the temperature of the obstacle.

  The detection elements 71d, 71e, 72d, and 72e are arranged in accordance with the shape of the field of view from the sensor position of the right and left side window glasses 93 and 95 of the rear seat 4 in the vehicle interior and the right and left sides of the vehicle rear window glass 94, respectively. It has a shape.

  For this reason, the temperature detection ranges of the detection elements 71d, 71e, 72d, and 72e are limited to the range of view from the sensor position on the right and left sides of the left and right side window glasses 93 and 95 and the rear window glass 94. it can.

  Therefore, the detection elements 71d, 71e, 72d, and 72e do not detect the temperature of extra portions other than the window glass. Moreover, it is possible to detect the temperature of the entire visual field range of the rear seat side window glasses 93 and 95 and the vehicle rear window glass 94. In combination with these, the detection elements 71d, 71e, 72d, 72e can accurately detect the temperatures of the left and right side window glasses 93, 95 and the rear window glass 94 by the rear seat side.

(Other embodiments)
In the above-described embodiment, the infrared temperature sensor 70 is disposed at one central portion in the vehicle left-right direction at the front portion of the vehicle interior ceiling, and the driver seat side detection unit 71 and Although the passenger seat side detection unit 72 is provided, as the infrared temperature sensor, the driver seat side infrared temperature sensor constituting the driver seat side detection unit 71 and the passenger seat side infrared temperature constituting the passenger seat side detection unit 72 are provided. The sensors may be configured independently, and the two infrared temperature sensors may be divided into a right side portion and a left side portion in the vehicle left-right direction at the front side portion of the vehicle interior ceiling.

  According to such a left and right divided arrangement of the infrared temperature sensors, it becomes easy to detect the influence of solar radiation on the left and right side window glass temperatures.

  In the above-described embodiment, the example in which the detection temperatures of the plurality of detection elements 71a, 71c, 72a, and 72c are simply averaged to calculate the occupant temperature has been described. The occupant temperature may be calculated by performing a weighting process in accordance with the degree of influence on the air conditioning heat load and the temperature sensation. According to this, the occupant temperature can be calculated more accurately in the air conditioning control.

   Further, in the above embodiment, the case where the solar radiation sensor 83 is disposed only on the front seat side in the vehicle interior has been described, but the solar radiation sensor 83 may be disposed on both the front seat side and the rear seat side in the vehicle interior. . In this case, the front seat side solar radiation amount detected by the front seat side solar radiation sensor 83 is used as Ts (see step S1232 in FIG. 7) when calculating the front seat left and right solar radiation amounts TsFrDr and TsFrPa. The rear-seat-side solar radiation amount detected by the rear-seat-side solar radiation sensor may be used as Ts (see step S1235 in FIG. 8) when calculating the left-right and right-side solar radiation amounts TsRrDr and TsRrPa.

It is a plane schematic diagram which shows the blower outlet arrangement | positioning state of the vehicle air conditioner by one Embodiment of this invention. It is a typical whole block diagram containing the indoor air-conditioning unit part and electric control block of the vehicle air conditioner by one Embodiment of this invention. It is a schematic block diagram of the infrared temperature sensor by one Embodiment of this invention. It is explanatory drawing which illustrates the enlarged shape of a front seat side detection element (infrared light-receiving part) among the infrared temperature sensors by one Embodiment of this invention. It is explanatory drawing which illustrates the enlarged shape of the backseat side detection element (infrared light-receiving part) among the infrared temperature sensors by one Embodiment of this invention. It is a flowchart which shows the outline | summary of the control processing of the air-conditioner ECU by one Embodiment of this invention. It is a flowchart which shows the control processing of front seat side target blowing air temperature calculation by one Embodiment of this invention. It is a flowchart which shows the control processing of the rear seat side target blowing air temperature calculation by one Embodiment of this invention.

Explanation of symbols

8 ... Air conditioner ECU (air conditioning control means), 70 ... Infrared temperature sensor (non-contact temperature sensor),
71a to 71e, 72a to 72e ... detection elements (infrared light receiving portions).

Claims (8)

A non-contact temperature sensor for a vehicle that detects the surface temperature of the temperature detection object by receiving infrared rays emitted from the surface of the temperature detection object located in a predetermined part of the vehicle interior,
A non-contact temperature sensor for vehicles, wherein a shape of an infrared light receiving portion (71a, 71b, 72a, 72b) that receives the infrared light is a shape corresponding to a shape of the temperature detection object. The non-contact temperature sensor for a vehicle according to claim 1 is disposed at a portion on the front side of the vehicle interior,
Including at least passengers in the front seats (2, 3) of the passenger compartment as the temperature detection object,
The non-contact temperature sensor for vehicles provided with the infrared light-receiving part (71a, 72a) formed in the shape according to the upper half of the said front seat passenger | crew as said infrared light-receiving part. The left and right side window glass (91, 92) of the front seat (2, 3) is included as the temperature detection object,
The infrared light receiving part (71, 72b) formed in a shape corresponding to the left and right side window glass (91, 92) of the front seat (2, 3) as the infrared light receiving part. The non-contact temperature sensor for vehicles according to 2. A non-contact temperature sensor for a vehicle that detects the surface temperature of the temperature detection object by receiving infrared rays emitted from the surface of the temperature detection object located in a predetermined part of the vehicle interior,
The non-contact type for a vehicle is characterized in that the shape of the infrared light receiving part (71c, 71d, 72c, 72d) that receives the infrared light is a shape corresponding to a visual field shape when the temperature detection object is viewed from a sensor position Temperature sensor. The non-contact temperature sensor according to claim 4 is disposed at a site on the front side of the vehicle interior,
Including at least a passenger in the rear seat (4) in the vehicle interior as the temperature detection object,
The non-contact temperature sensor for vehicles provided with the infrared light-receiving part (71c, 72c) formed in the shape according to the upper body of the said backseat passenger | crew as said infrared light-receiving part. The left and right side window glass (93, 95) of the rear seat (4) is included as the temperature detection object,
The infrared light receiving portion (71d, 72d) formed in a shape corresponding to the left and right side window glasses (93, 95) of the rear seat (4) as the infrared light receiving portion. The non-contact temperature sensor for vehicles as described. The temperature detection object is a plurality of temperature detection objects located at a predetermined part in the vehicle interior,
5. The vehicle non-contact temperature sensor according to claim 1, wherein a plurality of the infrared light receiving portions (71 a to 71 d, 72 a to 72 d) are provided corresponding to the plurality of temperature detection objects. A non-contact temperature sensor (70) for a vehicle according to any one of claims 1 to 7,
An air conditioner for a vehicle, comprising air conditioning control means (8) for controlling the air conditioning of the passenger compartment based on a detection signal of the vehicle non-contact temperature sensor (70).

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