JP6853831B2 - Vehicle test system, vehicle test system management device, vehicle test system program, and vehicle test method - Google Patents

Description

The present invention relates to a vehicle test system, a vehicle test system management device, a vehicle test system program, and a vehicle test method.

Conventionally, in a vehicle test system in which the wheels of a test vehicle are mounted on a chassis roller to test the performance of the test vehicle, the test vehicle is warmed up before the test, or the chassis roller is rotated without the test vehicle mounted. The chassis dynamometer is warmed up.

Regarding this warm-up operation, in the system described in Patent Document 1, the required warm-up time is stored in advance according to the equipment used for the test so that the warm-up end time of each equipment becomes the same time. , The warm-up start time of each device is scheduled.

However, since the warm-up operation described above is a predetermined time required for warm-up, for example, the day after the day when the system is operated and the day after the day when the system is not operated are different. There will be a difference in the temperature of the chassis rollers and the wheels of the test vehicle after the warm-up operation is completed.
As a result, the coefficient of friction between the wheels of the test vehicle and the chassis roller varies from test to test, the loss of driving force between the test vehicle and the chassis roller fluctuates from test to test, and the reproducibility of the test results deteriorates. There is a problem.

JP-A-2002-71527

Therefore, the present invention has been made to solve the above-mentioned problems, and its main object is to improve the reproducibility of test results in a vehicle test performed after warm-up operation.

That is, the vehicle test system according to the present invention is a vehicle test system in which the wheels of the test vehicle are mounted on a rotating body and the test vehicle is tested after warming up, and the rotating body or at least one of the vehicles is used. A temperature sensor that measures the temperature, a temperature acquisition unit that acquires at least one of the rotating body temperature or the wheel temperature measured by the temperature sensor, and the rotating body temperature or the rotating body temperature during warm-up operation acquired by the temperature acquisition unit. It is characterized by including a warm-up completion determination unit that determines whether or not the warm-up operation is completed based on at least one of the wheel temperatures.

According to the vehicle test system configured in this way, it is determined whether or not the warm-up operation is completed based on at least one of the rotating body temperature and the wheel temperature during the warm-up operation, so that the warm-up operation is completed. It is possible to suppress variations in the temperature of the rotating body and the temperature of the wheels later. As a result, it is possible to reduce the variation in friction between the wheel and the rotating body for each test, and it is possible to improve the reproducibility of the test result.

The warm-up operation is completed by the automatic driving device that drives the test vehicle, the warm-up start unit that outputs a control signal for controlling the automatic driving device and starts the warm-up operation, and the warm-up completion determination unit. It is preferable to include a vehicle test start unit that outputs a control signal for controlling the automatic driving device and starts the test of the test vehicle when it is determined that the test vehicle has been tested.
With such a configuration, it is possible to automate the process from the start of the warm-up operation to the determination that the warm-up operation is completed and the test of the test vehicle.

As a more specific embodiment of the vehicle test system, a configuration further including a chassis dynamometer provided with the rotating body and an exhaust gas measuring device for measuring exhaust gas from the test vehicle can be mentioned.

In order to further automate the test, the vehicle test start unit controls the dynamometer and the exhaust gas measuring device when the warm-up operation is determined by the warm-up completion determination unit. It is preferable to output a control signal to start the test of the test vehicle.

As an embodiment of the warm-up completion determination unit, when the rotating body temperature or the wheel temperature reaches a preset target value, it is determined that the warm-up operation is completed, or the rotating body temperature or When the time change rate of the wheel temperature becomes smaller than the preset target value, it is determined that the warm-up operation is completed.
In the case of the former configuration, the target value changes from a temperature rising state in which the rotating body temperature or the wheel temperature rises after the start of warm-up operation to a stable state in which the rotating body temperature or the wheel temperature settles down. The temperature of the rotating body or the wheel after the transition to the time point or the stable state can be mentioned.
In the case of the latter configuration, the target value changes from a temperature rising state in which the rotating body temperature or the wheel temperature rises after the start of warm-up operation to a stable state in which the rotating body temperature or the wheel temperature settles down. The time change rate of the rotating body temperature or the wheel temperature after that is mentioned.
With the above-described configuration, it is possible to avoid unnecessarily continuing the warm-up operation even though the state is stable, and it is possible to shorten the warm-up operation time.

By the way, when the temperature sensor is arranged toward the outer peripheral surface of the wheel to measure the wheel temperature, the measurement point changes to, for example, the inner part, the outer part or the central part of the wheel depending on the direction of the temperature sensor, and which part is measured. Is appropriately selected by the user.
However, since the distance between the left and right wheels differs depending on the model of the test vehicle, for example, the positions of the wheels mounted on the rotating body are not always the same, and the temperature sensor must face the measurement point desired by the user. For example, it is not possible to measure the wheel temperature at a desired measurement point.

Therefore, the temperature sensor is arranged so as to face the outer peripheral surface of the wheel, supports the temperature sensor, and supports the temperature sensor so as to be able to change the direction of the temperature sensor with respect to the outer peripheral surface. It is preferable to further include a mechanism.
With such a configuration, the orientation of the temperature sensor with respect to the outer peripheral surface of the wheel can be changed, so that the temperature sensor is directed to the desired measurement point even if the position of the wheel mounted on the rotating body changes. This makes it possible to measure the wheel temperature at the measurement point.

As a specific embodiment for directing the temperature sensor to a desired measurement point, it is preferable that the temperature sensor support mechanism supports the temperature sensor so as to be swivelable.
With such a configuration, by turning the temperature sensor, the measurement point can be adjusted to a desired point such as an inner part, an outer part, or a central part of the wheel.

It is preferable that the temperature sensor or the temperature sensor support mechanism is further provided with a light emitting portion that irradiates a temperature measuring portion on the outer peripheral surface of the wheel with light.
With such a configuration, the measurement location can be confirmed by visually observing the light emitted to the outer peripheral surface of the wheel.

In order to make it possible to measure both the wheel temperature and the temperature of the rotating body by using the temperature sensor described above, the temperature sensor support mechanism has a wheel temperature measuring posture facing the outer peripheral surface of the wheel and an outer circumference of the rotating body. It is preferable to movably support the temperature sensor with and from the rotating body temperature measuring posture facing the surface.

The vehicle test system management device according to the present invention is a management device used in a vehicle test system in which wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up. Alternatively, the warm-up operation can be performed based on at least one of the rotating body temperature acquisition unit that acquires the temperature of at least one of the wheels and the rotating body temperature or the wheel temperature during the warm-up operation acquired by the rotating body temperature acquisition unit. It is characterized by including a warm-up completion determination unit for determining whether or not it has been completed.

The vehicle test system program according to the present invention is a program used in a vehicle test system in which wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up, and the rotating body or the said The warm-up operation is completed based on at least one of the rotating body temperature acquisition unit that acquires the temperature of at least one of the wheels and the rotating body temperature or the wheel temperature during the warm-up operation acquired by the rotating body temperature acquisition unit. It is a program characterized in that the computer exerts a function as a warm-up completion determination unit for determining whether or not it is.

The vehicle test method according to the present invention is a vehicle test method in which wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up, and the temperature of at least one of the rotating body or the wheels is obtained. Warm-up completion determination for determining whether or not the warm-up operation is completed based on at least one of the temperature acquisition step for acquiring the above temperature and the temperature of the rotating body or the wheel during the warm-up operation acquired by the temperature acquisition step. It is a method characterized by having a step.

With such a vehicle test system control device, a vehicle test system program, and a vehicle test method, the same effects as those of the vehicle test system described above can be obtained.

According to the present invention configured as described above, the reproducibility of the test result can be improved in the vehicle test performed after the warm-up operation.

The figure which shows typically the structure of the vehicle test system of 1st Embodiment. The functional block diagram which shows the function of the management apparatus of the same embodiment. The flowchart for demonstrating the operation of the vehicle test system of the same embodiment. The figure for demonstrating the warm-up completion determination part of the same embodiment. The functional block diagram which shows the function of the management apparatus in the modification of 1st Embodiment. The figure which shows typically the structure of the vehicle test system of 2nd Embodiment. The figure which shows typically the inward posture and the outward posture of the temperature sensor of 2nd Embodiment. The figure which shows typically the wheel temperature measurement posture and the rotating body temperature measurement posture of the temperature sensor of 2nd Embodiment. The figure which shows typically the measurement position and the storage position of the temperature sensor of 2nd Embodiment.

100 ・ ・ ・ Vehicle test system V ・ ・ ・ Test vehicle 1 ・ ・ ・ Management device 12 ・ ・ ・ Rotating body temperature acquisition unit 13 ・ ・ ・ Wheel temperature acquisition unit 15 ・ ・ ・ Warm-up completion judgment unit 2 ・ ・ ・ Chassis Dynamometer 21 ・ ・ ・ Rotating drum 3 ・ ・ ・ Automatic operation device T1 ・ ・ ・ First temperature sensor T2 ・ ・ ・ Second temperature sensor T ・ ・ ・ Temperature sensor 5 ・ ・ ・ Temperature sensor support mechanism 6 ・ ・ ・ Up and down Swing mechanism 7 ・ ・ ・ Horizontal swing mechanism

<First Embodiment>
The first embodiment of the vehicle test system according to the present invention will be described below with reference to the drawings.

The vehicle test system 100 according to the present embodiment is for performing tests related to the performance of the test vehicle V such as exhaust gas analysis of an automobile, fuel consumption measurement, certification test, durability test, etc., and at least manages the vehicle as shown in FIG. It includes a device 1 and a chassis dynamometer 2. The vehicle test system 100 of the present embodiment analyzes exhaust gas, and as shown in FIG. 2, further includes an exhaust gas measuring device 4, and HC, NO _X , CO, contained in the exhaust gas emitted from the test vehicle V. It is configured so that each component such as CO _{2 can be continuously measured.} Further, the vehicle test system 100 of the present embodiment includes an automatic driving device 3 for automatically driving the test vehicle V on the chassis dynamometer 2. Instead of the automatic driving device 3, the vehicle test system 100 may be configured so that the test driver drives the test vehicle V. In this case, the vehicle test system 100 may include a driver's aid, which is an operation mode display device that displays the operation mode to the test driver.

The management device 1 is a computer system including, for example, a CPU, a memory, a communication interface, a display, an input means, and the like, and usually has a server function. Then, for example, by giving necessary parameters such as vehicle information and traveling mode to the management device 1, the chassis dynamometer 2 and the automatic driving device 3 receive and control control signals and various command signals from the management device 1. The test vehicle V travels in a desired mode, and the exhaust gas measuring device is activated to automatically measure the exhaust gas data.

The management device 1 and the exhaust gas measuring device may be physically dispersed independently, or a part or all of them may be integrated. Further, the vehicle test system 100 includes a dynamo control device for controlling the chassis dynamometer 2 and an automatic driving control device for controlling the automatic driving device 3, and the control signal from the management device 1 is transmitted to these dynamo control devices and the automatic driving device 1. The operation control device may be relayed to control the chassis dynamometer 2 and the automatic operation device 3.

The chassis dynamometer 2 is, for example, a uniaxial type, and includes a rotating drum 21 which is a rotating body on which the drive wheels W of the test vehicle V are mounted, a motor (not shown) which applies a load to the rotating drum 21, and the like. The chassis dynamometer 2 receives the control signal from the management device 1 described above and controls the motor to control the traveling load so that the test vehicle V can travel in the same state as on the road. is there.

The automatic driving device 3 is equipped with a driving robot mounted in the driver's cab of the test vehicle V to drive an accelerator, a brake, a clutch, etc., and is controlled by the driving robot by various command signals from the management device 1 described later. The performance of the test vehicle V or the engine or powertrain can be tested according to various standardized regulations (for example, JC08, WLTC mode, etc.).

By the way, before conducting the above-described test on the performance of the test vehicle V, the vehicle test system 100 of the present embodiment warms up the rotary drum 21 and the test vehicle V mounted on the rotary drum 21. ing. The warm-up operation is to run the test vehicle V on the rotating drum 21 in order to raise the temperature of the rotating drum 21 and the wheels W. In this warm-up operation, the test vehicle V travels at a constant speed. It may be running, or it may be running while accelerating or decelerating. Here, it is assumed that the test vehicle V is mounted on the rotary drum 21 for warm-up operation. However, when the rotary drum 21 is warmed up, the test vehicle V is not mounted on the rotary drum 21. Warm-up operation may be performed.

Here, for example, when the operator inputs a warm-up start signal for starting the warm-up operation, the management device 1 receives the warm-up start signal and controls the chassis dynamometer 2 and the automatic operation device 3 to perform the warm-up operation. Is started.

Then, in the vehicle test system 100 of the present embodiment, the management device 1 determines the completion of the warm-up operation based on at least the temperature of the rotating drum 21 during the warm-up operation (hereinafter referred to as the temperature of the rotating body). It is configured.

More specifically, in the management device 1, at least the rotating body temperature acquisition unit 12 and the warming unit 12 and the warming body temperature acquisition unit 12 and the warming body 1 are warmed up as shown in FIG. The machine completion determination unit 15 is provided, and here, a warm-up start unit 11, a wheel temperature acquisition unit 13, a warm-up completion temperature storage unit 14, and a test start unit 16 are further provided.
Hereinafter, the operation of the vehicle test system 100 of the present embodiment will be described with reference to the flowchart of FIG. 3 together with the explanation of each part.

First of all, when the above-mentioned warm-up start signal is input, the warm-up start signal is received by the warm-up start unit 11. Upon receiving the warm-up start signal, the warm-up start unit 11 outputs a control signal to the chassis dynamometer 2 and the automatic operation device 3 to control them, and starts the warm-up operation (S1).
Specifically, the warm-up start unit 11 outputs a control signal to the motor of the chassis dynamometer 2 and the driving robot of the automatic driving device 3, and automatically runs the test vehicle V on the rotating drum 21.

The rotating body temperature acquisition unit 12 acquires the temperature of the rotating drum 21 at least after the warm-up operation is started (S2). In the present embodiment, as shown in FIG. 1, the vehicle test system 100 includes a first temperature sensor T1 for measuring the temperature of the rotating drum 21, and the rotating body temperature measured by the first temperature sensor T1 is measured. It is designed to be transmitted to the rotating body temperature acquisition unit 12.
The temperature of the rotating body of the present embodiment is the surface temperature of the rotating drum 21, and the first temperature sensor T1 is, for example, an infrared thermometer or a radiation thermometer provided near the surface of the rotating drum 21.

The wheel temperature acquisition unit 13 acquires the temperature of the wheel W (hereinafter referred to as the wheel temperature), and acquires the wheel temperature at least after the warm-up operation is started (S3). In the present embodiment, as shown in FIG. 1, the vehicle test system 100 includes a second temperature sensor T2 for measuring the temperature of the wheel W, and the wheel temperature measured by the second temperature sensor T2 is the wheel. It is set to be transmitted to the temperature acquisition unit 13.
The wheel temperature of the present embodiment is the surface temperature of the wheel W, and the second temperature sensor T2 is, for example, an infrared thermometer or a radiation thermometer provided near the surface of the wheel W.

The warm-up completion temperature storage unit 14 is formed in a predetermined area of the memory, and stores a target value (hereinafter, referred to as a target rotating body temperature) of the rotating body temperature to be raised by the warm-up operation. This target rotating body temperature is preset by the operator before the warm-up operation is performed, and can be changed as appropriate. Here, as shown in FIG. 4, the stable temperature at the time when the temperature of the rotating body rises after the start of the warm-up operation is changed to the stable state where the temperature of the rotating body is stable or after the stable state is changed. It is set to the target rotating body temperature. The stable temperature of the rotating drum 21 is a value that can be empirically predicted by, for example, measuring the temperature of the rotating drum 21 during a past test, but it is not always a constant value, so it is a target. The temperature of the rotating body may be set to a temperature lower than or higher than the stable temperature.

Further, the warm-up completion temperature storage unit 14 of the present embodiment stores a target value of the wheel temperature (hereinafter, referred to as a target wheel temperature) to be raised by the warm-up operation. This target wheel temperature is preset by the operator before the warm-up operation and can be changed as appropriate. Here, as with the target rotating body temperature described above, the stable temperature at the time when the wheel temperature rises after the start of warm-up operation changes to the stable state where the wheel temperature settles down or after the stable state is changed. It is set to the target wheel temperature. The target wheel temperature may also be set to a temperature lower or higher than the stable temperature.

The warm-up completion determination unit 15 compares at least the rotating body temperature during warm-up operation acquired by the rotating body temperature acquisition unit 12 with the target rotating body temperature stored in the warm-up completion temperature storage unit 14. , Judge whether the warm-up operation is completed.

More specifically, the warm-up completion determination unit 15 compares the temperature of the rotating body during the warm-up operation with the target rotating body temperature, and determines whether or not the rotating body temperature has reached the target rotating body temperature (S4). .. Further, the warm-up completion determination unit 15 here compares the wheel temperature during warm-up operation with the target wheel temperature, and determines whether the wheel temperature has reached the target wheel temperature (S5). Then, the warm-up completion determination unit 15 either occurs when the temperature of the rotating body during the warm-up operation reaches the target rotating body temperature or when the wheel temperature during the warm-up operation reaches the target wheel temperature. It is judged that the warm-up operation is completed at a late time.

When the warm-up completion determination unit 15 determines that the warm-up operation has been completed, the warm-up completion determination unit 15 outputs a warm-up end signal for ending the warm-up operation to the warm-up start unit 11 to end the warm-up operation (S6). ..

Next, the warm-up completion determination unit 15 outputs a test start signal for starting the vehicle test to the test start unit 16. As a result, the test start unit 16 outputs a control signal to the chassis dynamometer 2 and the automatic driving device 3, and performs a performance test of the test vehicle V or the engine or power train according to various standardized regulations, for example. Is started (S7).

According to the vehicle test system 100 according to the present embodiment configured in this way, the warm-up completion determination unit 15 is at the time when the temperature of the rotating body during the warm-up operation reaches the target rotating body temperature, or during the warm-up operation. Since it is determined that the warm-up operation is completed at the time when the wheel temperature reaches the target wheel temperature, whichever is later, it is possible to suppress variations in the rotating body temperature and the wheel temperature after the warm-up operation is completed. it can. As a result, it is possible to reduce the variation in friction between the wheel W and the rotating drum 21 for each test, and it is possible to improve the reproducibility of the test results.

In addition, since the target rotating body temperature and the target wheel temperature are set to the stable temperature at the time when the temperature rise state changes to the stable state, it is avoided to continue the warm-up operation unnecessarily even though the stable state is reached. It is possible to shorten the warm-up operation time.

Further, the warm-up start unit 11 controls the chassis dynamometer 2 and the automatic operation device 3 to start the warm-up operation, and after the warm-up completion determination unit 15 determines that the warm-up operation is completed, the test start unit 16 Controls the chassis dynamometer 2 and the automatic driving device 3 to start the vehicle test, so that the process from the warm-up operation to the vehicle test can be automated.

The present invention is not limited to the above embodiment.

For example, in the above-described embodiment, the warm-up completion determination unit 15 determines whether the temperature of the rotating body during the warm-up operation reaches the target rotating body temperature or the temperature of the wheels during the warm-up operation reaches the target wheel temperature. , It was determined that the warm-up operation was completed at a later time, but it may be determined that the warm-up operation was completed after a predetermined time has elapsed from any of the later points. The predetermined elapsed time is an arbitrary time set in advance, for example, 5 to 20 minutes or the like.

Further, the warm-up completion determination unit 15 calculates the time change rate of one or both of the rotating body temperature and the wheel temperature, and the calculated time change rate and the target value stored in the warm-up completion temperature storage unit 14. It may be determined whether or not the warm-up operation is completed by comparing with (hereinafter referred to as the target time change rate). This target time change rate is a preset value, and is, for example, the time change rate of the rotating body temperature or the time change rate of the wheel temperature after the transition from the temperature rising state to the stable state described in the above embodiment.
More specifically, the warm-up completion determination unit 15 determines that the warm-up operation is completed when the time change rate becomes smaller than the target time change rate, or after a predetermined elapsed time from the time when the time change rate becomes smaller. To do. The predetermined elapsed time is an arbitrary time set in advance, for example, 5 to 20 minutes or the like.

Further, in the above-described embodiment, the warm-up completion determination unit 15 determines whether or not the warm-up operation is completed based on both the rotating body temperature and the wheel temperature, but the rotating body does not use the wheel temperature. It may be determined whether or not the warm-up operation is completed based on the temperature, or it may be determined whether or not the warm-up operation is completed based on the wheel temperature without using the rotating body temperature. In the former case, the vehicle test system 100 does not need to be provided with the second temperature sensor T2, and the management device 1 does not need to be provided with the wheel temperature acquisition unit 13. In the latter case, the vehicle test system 100 does not need to be provided with the first temperature sensor T1, and the management device 1 does not need to be provided with the rotating body temperature acquisition unit 12.

Further, whether the warm-up completion determination unit 15 has completed the warm-up operation based on the internal temperature of the test vehicle V, such as the temperature of the catalyst provided on the flow path of the exhaust gas from the engine and the temperature of the mission oil. You may decide whether or not.
Specifically, as shown in FIG. 5, a third temperature sensor T3 for measuring the internal temperature of the test vehicle V is provided in the test vehicle V, the management device 1 is provided with the internal temperature acquisition unit 17, and warm-up is completed. The determination unit 15 may be configured to determine whether or not the warm-up operation is completed based on the internal temperature during the warm-up operation acquired by the internal temperature acquisition unit 17.

In addition, the vehicle test system 100 of the above embodiment is configured to mount the front wheels of the test vehicle V on the rotary drum 21, but mounts the rear wheels of the test vehicle V on the rotary drum 21. It may be present, or both the front wheels and the rear wheels may be placed on the rotating drum 21, respectively.
In the vehicle test system 100 provided with the plurality of chassis dynamometers 2, the temperature of the rotating body of each rotating drum 21 is measured, and it is determined whether or not the warm-up operation is completed based on the temperature of each rotating body. Alternatively, the temperature of the rotating body of one rotating drum 21 may be measured on behalf of each rotating drum 21 to determine whether or not the warm-up operation is completed based on the temperature of the rotating body.

Further, the test vehicle V is not limited to the completed vehicle, and may be any vehicle provided with wheels and a drive system.

The second temperature sensor T2 is arranged in front of the wheel W in the above embodiment, but may be arranged behind the wheel W. Specifically, the second temperature sensor T2 may be arranged at a position diagonally rearward from the wheel W so as to face the outer peripheral surface of the wheel W.
With such an arrangement, the wheel temperature can be measured immediately after the wheels are separated from the rotating drum 21. Since this wheel temperature is equivalent to the temperature at the point where the wheel comes into contact with the rotating drum 21, the temperature at the point where the wheel touches the ground can be grasped, and the reproducibility and measurement accuracy in vehicle tests such as fuel consumption measurement are improved. Can be planned.

Further, the second temperature sensor T2 may be supported by a temperature sensor support mechanism (not shown) configured so that the orientation of the second temperature sensor T2 with respect to the outer peripheral surface of the wheel W can be changed. Specifically, the temperature sensor support mechanism preferably supports the second temperature sensor T2 so as to be rotatable.
With such a configuration, the orientation of the second temperature sensor T2 with respect to the outer peripheral surface of the wheel W can be changed, so that even if the position of the wheel W mounted on the rotating drum 21 changes, the second temperature can be changed. By turning the sensor T2 toward a desired location such as an inner portion, an outer portion, or a central portion of the wheel, it is possible to measure the wheel temperature at the measurement location.

Further, the temperature sensor support mechanism is configured to support the second temperature sensor T2 so as to be able to move up and down between the measurement position for measuring the wheel temperature and the storage position set in advance below the measurement position. Is preferable.
With such a configuration, when the test vehicle V is moved onto the rotating drum 21 or from above the rotating drum 21, the second temperature sensor T2 is moved to the storage position and stored, for example, below the floor surface. As a result, the second temperature sensor T2 can be prevented from interfering with the movement of the test vehicle V.

<Second Embodiment>
Subsequently, a second embodiment of the vehicle test system according to the present invention will be described with reference to the drawings.

The vehicle test system 100 according to the present embodiment is for performing tests related to the performance of the test vehicle V such as automobile exhaust gas analysis, fuel consumption measurement, certification test, and durability test, and is at least managed as shown in FIG. It includes a device 1, a chassis dynamometer 2, a temperature sensor T for measuring the temperature of wheels, and a temperature sensor support mechanism 5 for supporting the temperature sensor T.
The vehicle test system 100 according to the second embodiment is characterized by the temperature sensor support mechanism 5, and will be described in detail below.

First, the temperature sensor T will be described. The temperature sensor T here measures the surface temperature of the wheel W (hereinafter referred to as the wheel temperature), and is provided in the vicinity of the surface of the wheel W, for example, red. It is a non-contact type such as an external thermometer or a radiation thermometer. The temperature sensor T is arranged at a position away from the wheel W so as to face the outer peripheral surface W1 of the wheel W, and here, it is behind the wheel W, more specifically, diagonally behind the wheel W and is a wheel. It is arranged outside W.
The temperature sensor T may be provided on any wheel W, such as being provided on each of the front, rear, left, and right wheels W, or on the drive wheel W, for example.

The temperature sensor support mechanism 5 supports the temperature sensor T, and is configured so that the direction of the temperature sensor T with respect to the outer peripheral surface W1 of the wheel W, that is, the measurement point on the outer peripheral surface W1 of the wheel W can be changed. The direction of the temperature sensor T referred to here is a direction perpendicular to the sensor surface Ts through the center of the sensor surface Ts of the temperature sensor T, and more specifically, the light of a lens (not shown) forming the sensor surface Ts. The direction in which the axis extends.

Specifically, as shown in FIG. 6, the temperature sensor support mechanism 5 desires a support portion main body 51 to which the temperature sensor T is attached, a rotatable shaft member 52 connected to the support portion main body 51, and a shaft member 52. It has a stationary mechanism (not shown) that makes it stationary at the position of.

The temperature sensor support mechanism 5 of the present embodiment is configured so that the support portion main body 51 and the temperature sensor T rotate when the shaft member 52 rotates, but the support portion main body does not rotate the shaft member 52. The temperature sensor T may be rotated by making the 51 rotatable.
Here, as shown in FIG. 6, a through hole H is formed in the floor surface F (floor surface F in the test room) where the upper part of the rotating drum 21 which is a rotating body is exposed, and penetrates through the through hole H. The shaft member 52 extends downward from the support portion main body 51 so as to do so.

As shown in FIG. 7, the temperature sensor support mechanism 5 is configured so that the temperature sensor T can be horizontally swiveled within a predetermined angle range, whereby the direction of the temperature sensor T is directed in the width direction of the wheel. Can be adjusted according to.
Specifically, the temperature sensor support mechanism 5 is configured to rotate the temperature sensor T between the inward posture A and the outward posture B, and the temperature sensor T is inside the rotating drum 21 in the inward posture A. The temperature sensor T faces the outer end of the rotating drum 21 in the outward posture B. The orientation of the temperature sensor T in the inward posture A and the outward posture B may be changed as appropriate.

Further, as shown in FIG. 8, the temperature sensor support mechanism 5 is configured so that the temperature sensor T can be rotated in the vertical direction within a predetermined angle range, whereby the orientation of the temperature sensor T Can be adjusted along the vertical direction.
Specifically, the temperature sensor support mechanism 5 has a wheel temperature measuring posture C in which the temperature sensor T faces the outer peripheral surface W1 of the wheel to measure the wheel temperature, and the temperature of the rotating body (hereinafter, rotating) facing the outer peripheral surface of the rotating body. It is configured to move between the rotating body temperature measuring posture D for measuring (referred to as body temperature).
The orientation of the temperature sensor T in the wheel temperature measuring posture C is set to, for example, along the horizontal direction, and the orientation of the temperature sensor T in the rotating body temperature measuring posture D is in front of the top of the rotating body, that is, rotating. It is set to face the back side of the top of the body. The orientation of the temperature sensor T in each of the postures C and D can be changed as appropriate. For example, the orientation of the temperature sensor T in the wheel temperature measurement posture C may be tilted upward or downward from the horizontal direction.
The wheel temperature and the rotating body temperature measured by the temperature sensor T are transmitted to the management device and used for analysis of vehicle performance such as fuel consumption.

Further, as shown in FIG. 9, the temperature sensor support mechanism 5 can raise and lower the temperature sensor T between the measurement position P for measuring the wheel temperature and the storage position Q set in advance below the measurement position P. It is configured to support. Specifically, the shaft member 52 is configured to be slidable along the axial direction, and the support portion main body 51 and the temperature sensor T move up and down in conjunction with the slide movement of the shaft member 52.

The measurement position P is a position above the floor surface F, for example, a position when the temperature sensor T is arranged at a height desired by the user from the floor surface F. The measurement position P does not necessarily have to be a predetermined fixed position, and may be appropriately changed according to the vehicle type of the test vehicle V, the size of the wheels, and the like.

The storage position Q is a position where the temperature sensor T does not interfere with the running of the test vehicle, and it is preferable that the temperature sensor T is set at a position where it cannot be seen from the outside. Specifically, for example, it may be below the floor surface F.

As shown in FIGS. 6 to 9, the temperature sensor support mechanism 5 of the present embodiment further includes a lid 9 that closes the through hole H formed in the floor surface F when the temperature sensor T is in the storage position. ing. The lid 9 moves up and down together with the shaft member 52 described above, and a knob portion 91 for hooking a user's finger is formed. As a result, the user can slide and move the shaft member 52 in the vertical direction by pinching the knob portion 91 and raising and lowering the lid body 9, and the temperature sensor T is moved between the measurement position P and the storage position Q. It can be moved up and down.

The stationary mechanism generates a frictional force between the shaft member 52 and a peripheral wall (not shown) around the shaft member 52, and the movement of the shaft member 52 is stopped by this frictional force, which is not shown here. It is configured using a ball plunger.
More specifically, a ball plunger is provided on one of the shaft member 52 or the peripheral wall, and by pressing and contacting the ball of the ball plunger with the other of the shaft member 52 or the peripheral wall, a frictional force is generated between them. The shaft member 52 is stationary. Thereby, the direction (turning angle) of the temperature sensor T and the measurement position P (height from the floor surface F) can be adjusted steplessly.
The stationary mechanism is not limited to the one using a ball plunger, and various configurations can be adopted as long as it is a mechanism that generates a frictional force between the shaft member 52 and the peripheral wall. Further, the stationary mechanism may be configured so that the turning angle and height of the temperature sensor T can be adjusted stepwise by using, for example, a click stop or a latch.

The temperature sensor support mechanism 5 of the present embodiment is further provided with a temperature sensor T or a temperature sensor support mechanism 5 and further includes a light emitting portion (not shown) that irradiates a temperature measurement point on the outer peripheral surface W1 of the wheel with light. ..
This light emitting unit is provided, for example, in the vicinity of the temperature sensor T and emits light parallel to the direction of the temperature sensor T. Specifically, it is a laser pointer or the like that emits laser light.

In the vehicle test system 100 of the present embodiment configured in this way, since the temperature sensor support mechanism 5 supports the temperature sensor T so that the direction of the temperature sensor T can be changed, it is mounted on the rotating drum 21. Even if the position of the wheel changes, by pointing the temperature sensor T at a desired measurement point, it is possible to measure the wheel temperature at that measurement point.

Further, since the temperature sensor T can be horizontally swiveled by the temperature sensor support mechanism 5, the temperature sensor T can be directed to a desired location such as an inner portion, an outer portion, or a central portion of the wheel.

Further, since the temperature sensor T at the measurement position is arranged behind the wheel, it is possible to measure the wheel temperature immediately after the wheel is separated from the rotating drum 21. Since this wheel temperature is equivalent to the temperature at the point where the wheel comes into contact with the rotating drum 21, the temperature at the point where the wheel touches the ground can be grasped, and the reproducibility and measurement accuracy in vehicle tests such as fuel consumption measurement are improved. Can be planned.

In addition, the temperature sensor support mechanism 5 includes a vertical swing mechanism 6, and the temperature sensor T is configured to be movable between the vehicle temperature measurement posture and the rotating body temperature measurement posture, so that one temperature is obtained. Both the wheel temperature and the rotating body temperature can be measured using the sensor T.

Furthermore, since the temperature sensor support mechanism 5 includes a light emitting portion such as a laser pointer, the measurement location can be confirmed by visually observing the light emitted to the outer peripheral surface W1 of the wheel.

In addition, the present invention is not limited to each of the above-described embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

By using the vehicle test system according to the present invention, the reproducibility of the test results can be improved in the vehicle test performed after the warm-up operation.

Claims (14)

In a vehicle test system in which the wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up.
A temperature sensor that measures the temperature of at least one of the rotating body or the wheel, and
A temperature acquisition unit that acquires at least one of the rotating body temperature and the wheel temperature measured by the temperature sensor, and
A vehicle including a warm-up completion determination unit that determines whether or not the warm-up operation is completed based on at least one of the rotating body temperature and the wheel temperature during the warm-up operation acquired by the temperature acquisition unit. Test system. An automatic driving device for driving the test vehicle and
A warm-up start unit that outputs a control signal for controlling the automatic operation device and starts a warm-up operation, and a warm-up start unit.
It is provided with a vehicle test start unit that outputs a control signal for controlling the automatic driving device and starts the test of the test vehicle when the warm-up completion determination unit determines that the warm-up operation is completed. The vehicle test system according to claim 1. A chassis dynamometer equipped with the rotating body and
The vehicle test system according to claim 2, further comprising an exhaust gas measuring device for measuring exhaust gas from the test vehicle. When the vehicle test start unit determines that the warm-up operation has been completed by the warm-up completion determination unit, it outputs a control signal for controlling the dynamometer and the exhaust gas measuring device to output the test vehicle. The vehicle test system according to claim 3, wherein the test is started. According to any one of claims 1 to 4, the warm-up completion determination unit determines that the warm-up operation has been completed when the rotating body temperature or the wheel temperature reaches a preset target value. The vehicle test system described. The target value has changed from a temperature rising state in which the rotating body temperature or the wheel temperature rises after the start of the warm-up operation to a stable state in which the rotating body temperature or the wheel temperature settles down or to a stable state. The vehicle test system according to claim 5, which is the temperature of the later rotating body or wheel. The warm-up completion determination unit determines that the warm-up operation is completed when the time change rate of the rotating body temperature or the wheel temperature becomes smaller than a preset target value, according to claims 1 to 4. The vehicle test system described in any one of the items. The temperature of the rotating body after the target value changes from a temperature rising state in which the temperature of the rotating body or the wheel temperature rises after the start of the warm-up operation to a stable state in which the temperature of the rotating body or the wheel temperature settles down. Or the vehicle test system according to claim 7, which is the time change rate of the wheel temperature. The temperature sensor is arranged so as to face the outer peripheral surface of the wheel.
The vehicle test system according to any one of claims 1 to 8, further comprising a temperature sensor support mechanism that supports the temperature sensor and is configured to be able to change the orientation of the temperature sensor with respect to the outer peripheral surface. The vehicle test system according to claim 9, further comprising a light emitting portion provided on the temperature sensor or the temperature sensor support mechanism to irradiate a temperature measuring portion on the outer peripheral surface of the wheel with light. 9. or claim 9, wherein the temperature sensor support mechanism movably supports the temperature sensor between a wheel temperature measuring posture facing the outer peripheral surface of the wheel and a rotating body temperature measuring posture facing the outer peripheral surface of the rotating body. 10. The vehicle test system according to 10. In a management device used in a vehicle test system in which the wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up.
A rotating body temperature acquisition unit that acquires the temperature of at least one of the rotating body or the wheel, and
A vehicle including a warm-up completion determination unit that determines whether or not the warm-up operation is completed based on at least one of the rotating body temperature and the wheel temperature during the warm-up operation acquired by the rotating body temperature acquisition unit. Control device for test system. In a program used in a vehicle test system in which the wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up.
A rotating body temperature acquisition unit that acquires the temperature of at least one of the rotating body or the wheel, and
A computer functions as a warm-up completion determination unit that determines whether or not the warm-up operation is completed based on at least one of the rotating body temperature and the wheel temperature during the warm-up operation acquired by the rotating body temperature acquisition unit. Program for vehicle test system to be demonstrated. In a vehicle test method in which the wheels of a test vehicle are mounted on a rotating body and the test vehicle is tested after warming up.
A temperature acquisition step of acquiring the temperature of at least one of the rotating body or the wheel, and
A vehicle test method including a warm-up completion determination step for determining whether or not the warm-up operation is completed based on at least one of the rotating body temperature and the wheel temperature during the warm-up operation acquired by the temperature acquisition step.

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