JP4543990B2 - Evaluation apparatus and evaluation method for vehicle electronic system - Google Patents

Description

  The present invention relates to an evaluation apparatus and an evaluation method for performing performance evaluation of an electronic electronic system for a vehicle, and more particularly to a technique for realizing evaluation in an evaluation environment suitable for an actual vehicle.

  Conventionally, various electronic electronic systems for vehicles such as vehicle engine control systems, drive control systems, chassis control systems such as ABS, body control systems such as meters, headlights, doors, seats, and auto air conditioners are used for each individual system. In order to satisfy basic performance, various performance evaluations are performed at the stage of development for each individual system. Therefore, if development is completed for each individual system, the operation for each individual system should be normally performed when they are actually mounted on a vehicle. However, in recent years, individual systems are connected by a network, and a single function is realized by the cooperation of a plurality of systems (distributed control), or one system controls the operation of other systems in an integrated manner ( Distributed / integrated control (integrated control) is also widely used, and the reliability of such distributed / integrated control cannot be ensured only by evaluating the performance of each individual system. It has become particularly important to perform performance evaluation.

  When evaluating the performance of the entire vehicle, until now, an electronic electrical system was actually mounted on a prototype vehicle tailored for vehicle testing, and as a part of vehicle testing, performance evaluation of the entire vehicle electronic electrical system was performed. It was generally done. However, with such a method, an expensive prototype vehicle originally designed for the purpose of checking the performance of the vehicle is partially occupied for the performance evaluation of the vehicle electronic system, which is efficient. There is a problem that it becomes a hindrance in conducting a vehicle experiment. Also, the installation work of the electronic electrical system to the prototype vehicle is complicated, and if any malfunction is found, it is necessary to remove the electronic electrical system from the prototype vehicle, which is also complicated. There was a problem of becoming, and improvement was demanded.

  Against this background, in recent years, it has been called a bench test, and the electronic components that make up the vehicle electronic system are arranged on a desk and connected with a harness in the same way as when mounted on a vehicle. As a result, evaluation of performance has been widely performed. Furthermore, as a result of developing this bench test, a frame that can secure each electronic component that constitutes the vehicle electronic electrical system to a predetermined position is assembled, and each electronic component is attached to this frame to evaluate the performance. Attempts have also been made (see Non-Patent Document 1, for example).

  The characteristics of the evaluation apparatus for a vehicle electronic electrical system described in Non-Patent Document 1 are roughly divided into the following four.

  (1) Effective evaluation of an expensive and valuable prototype vehicle can be promoted by evaluating the distributed control and integrated control of the vehicle electronic system before the prototype vehicle is completed. This means reducing the occupancy of prototype vehicles for the evaluation of electronic electrical systems.

  (2) By assembling each electronic component of the electronic electrical system to the three-dimensional frame, it is possible to evaluate in consideration of use in an actual vehicle, and the operator intuitively judges the evaluation result with the same feeling as the vehicle driver. can do. In addition, since each electronic component is arranged and connected to the three-dimensional frame, it is easy to prevent electrical shorts between the electronic components and to ensure the safety of the operator.

  (3) Combining a real-time simulator, artificially creating a sensor signal of the vehicle running state and inputting it to the vehicle electronic system, and monitoring the output signal of the vehicle electronic system to actually run the vehicle By assembling a hardware in the loop (HIL) system that corrects and re-outputs the sensor signal as if it is, it is possible to perform performance evaluation under conditions in a wide range equivalent to the prototype vehicle.

(4) The 3D frame is shaped like a U when viewed from above, so that the worker can put it inside the 3D frame, and the operator can operate the steering wheel and switches operated by the driver inside the 3D frame. By arranging at the position, it is possible to perform various operations for performance evaluation with the same feeling as the operator actually drives the vehicle.
“ECU Network Testing Hardware-in-the-Loop Simulation”, VDI-Bericht Nr. 1755, VDI-Verlag, October 2003

  By the way, when the vehicle electronic system is actually mounted on a vehicle, the minus side or the plus side of the power source is usually used as a body ground and the vehicle body is used as a ground. Therefore, as in the evaluation apparatus for a vehicle electronic electrical system described in Non-Patent Document 1 described above, it is correct when performing performance evaluation by attaching each electronic component constituting the vehicle electronic electrical system to a three-dimensional frame. For performance evaluation, it is also important to ensure a ground environment equivalent to the vehicle body and ground it.

  However, in the evaluation apparatus for a vehicle electronic electrical system described in Non-Patent Document 1 described above, consideration is not given to securing a ground environment equivalent to that of the vehicle body. When the performance of a vehicular electronic electrical system is evaluated by conducting a system switching test, etc., the electronic electrical system to be evaluated may behave differently from when it is actually mounted on the vehicle. There was a problem that it was difficult to perform performance evaluation.

  The present invention was devised to solve the above-described problems of the prior art, and evaluates the performance of a vehicle electronic electrical system by conducting an electrical surge test, a vehicle power supply system switching test, or the like. Even in this case, an object of the present invention is to provide an evaluation apparatus and an evaluation method for an electronic system for a vehicle that can realize an evaluation environment equivalent to that of a vehicle and perform an accurate performance evaluation.

  In the present invention, in order to achieve the above object, a three-dimensional frame formed by assembling a plurality of frame base materials made of a conductive metal material into a three-dimensional shape simulating a vehicle body is used for a vehicle to be evaluated. Electronic components constituting the electronic electrical system are attached. Then, the resistance value of the three-dimensional frame is managed to a value equivalent to that of the vehicle body, and the ground terminals of the electronic parts constituting the vehicle electronic system are electrically connected to the three-dimensional frame.

  According to the present invention, the three-dimensional frame itself to which each electronic component of the vehicle electronic electrical system to be evaluated is attached is secured as a ground environment. For example, an electrical surge test or a vehicle power supply system switching test is performed. Therefore, even when evaluating the performance of the vehicle electronic system, it is possible to realize an evaluation environment equivalent to that of the vehicle and perform accurate performance evaluation. In addition, the mounting position of each electronic component can be given a degree of freedom, and the performance evaluation can be performed in the same environment as the vehicle by mounting the electronic component at the same position as when it is actually mounted on the vehicle.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  First, an outline of performance evaluation of an electronic vehicle electrical system implemented using an evaluation apparatus to which the present invention is applied will be described. The following two items are mainly listed as performance evaluation items implemented using the evaluation apparatus to which the present invention is applied.

(1) Reliability evaluation of power supply, etc. This is to evaluate the effect on the electronic system due to repeated power on / off by the operation of the ignition switch and fluctuation of the power supply voltage. It corresponds to a switching test of a vehicle power supply system. In the evaluation method, electronic components constituting the electronic electrical system are attached to a three-dimensional frame of the evaluation device, and a power supply device for supplying power to these electronic components is installed. Then, by operating the power supply device, the power supply is repeatedly turned on / off and power fluctuation is input to each electronic component to check whether there is a problem in the function or operation of the electronic electrical system.

(2) Communication network function evaluation This evaluates the validity of the impedance measurement and communication waveform of the in-vehicle communication network and the normality of the communication data and protocol. The evaluation method consists of connecting the electronic components (electronic control units) of multiple electronic electrical systems attached to the 3D frame with communication cables, supplying power to each electronic component from the power supply, and checking the status of the communication network. Evaluate the validity by conducting electrical and software inspections. In addition, depending on the inspection contents, a simulation environment that realizes a simulated running state of a vehicle called a hardware in the loop (HIL) system is constructed, and not only the stopping state of the vehicle but also the running state is created as an inspection condition to be mounted on the vehicle. Conduct a communication network status check.

  The evaluation apparatus to which the present invention is applied is one that can accurately and efficiently perform the performance evaluation of the above-described vehicle electronic system. Hereinafter, a specific example of an evaluation apparatus to which the present invention is applied will be described.

(First embodiment)
FIG. 1 is a perspective view schematically showing an example of an evaluation apparatus to which the present invention is applied. This evaluation apparatus includes a three-dimensional frame 1 to which electronic components constituting an electronic electrical system are attached. The three-dimensional frame 1 is formed by assembling a plurality of frame base materials made of a conductive metal material into a three-dimensional shape simulating a vehicle body. As the frame base material, for example, an aluminum extruded material is used. . Specifically, for example, aluminum extrusion material manufactured by Bosch Rexroth Co., Ltd. (Internet <URL: http://www.boschrexroth.com/country_units/asia/japan/en/products/brl/mt_new/bme/index. jsp>) is suitable as a frame base material constituting the three-dimensional frame 1.

  Further, in order to join a plurality of frame base materials, a joining member made of aluminum die casting is used at a joint portion of each frame base material, and the adjacent frame base material is tightened by fastening a fastening member such as a bolt and a nut. Joining is achieved. In addition to using a joining member and a fastening member, joining of a plurality of frame base materials can be performed by, for example, welding, but it is easy to assemble and disassemble after assembly. Therefore, it is desirable to join the frame base materials using a joining member and a fastening member.

  In order to enable the three-dimensional frame 1 to be easily moved, a caster-type wheel 2 is attached to an appropriate position at the lower end, and the three-dimensional frame 1 is installed on the floor via the wheel 2. As the wheel 2, in order to ensure sufficient insulation between the three-dimensional frame 1 and the floor surface, for example, a wheel made of an electrically insulating material such as resin is used. Further, for example, a screw-fixed stopper 3 is attached to the lower end of the three-dimensional frame 1 so that the three-dimensional frame 1 does not move carelessly. Also for this stopper 3, an electrical insulating material such as a resin is used for a portion in contact with the floor surface in order to ensure sufficient insulation between the three-dimensional frame 1 and the floor surface. If the caster type wheel 2 is provided with a stopper function, it is not necessary to provide the stopper 3 separately.

  Various electronic components constituting the electronic electrical system to be evaluated are attached to the three-dimensional frame 1 as described above. As an electronic component which comprises an electronic electrical system, the electronic control unit 10 which controls each individual system, various sensors, switches, an actuator, etc. are mentioned, for example. Note that illustration of various electronic parts such as sensors, switches, and actuators is omitted in FIG. The three-dimensional frame 1 is also equipped with a harness 11 such as a communication cable for connecting the electronic control units 10 to each other, a connection cable for connecting the electronic control unit 10 to various sensors, switches, and actuators. All the electronic electrical systems are attached in the same connection state at the same positions as when actually mounted on the vehicle.

  In addition, the evaluation device of the present embodiment includes a power supply device 4 for supplying power to various electronic components attached to the three-dimensional frame 1. As this power supply device 4, a commercially available DC power supply device, specifically, for example, a DC power supply device manufactured by Kikusui Electronics Co., Ltd. (Internet <URL: http://www.kikusui.co.jp/catalog/ pad-la_j.html>), and various power supplies that can be applied to the target product, such as a bipolar power supply device, such as a bipolar power supply device manufactured by NF Circuit Design Block Co., Ltd. (Internet <URL : Http://www.nfcorp.co.jp/products/e/e01/asis/as161.html>) is suitable. In addition, as the power supply device 4, an in-vehicle battery that is actually mounted on the vehicle may be used.

  In the evaluation apparatus of the present embodiment configured as described above, in particular, in order to accurately perform the evaluation of (1) described above, in all the locations from the front end portion to the rear end portion of the three-dimensional frame 1. The resistance value is managed so as to be equal to the resistance value of the actual vehicle body. The ground terminals of various electronic components attached to the three-dimensional frame 1 are electrically connected to appropriate positions of the three-dimensional frame 1. That is, when the vehicular electronic electrical system is actually mounted on a vehicle, the minus side or the plus side of the power source is normally used as a body ground and the vehicle body is used as a ground. Therefore, when performing the performance evaluation by attaching each electronic component constituting the electronic electrical system to the three-dimensional frame 1, in order to correctly evaluate the reliability of the power supply etc., the ground environment equivalent to the vehicle body is required in the three-dimensional frame 1. It is also important to secure and ground. Therefore, in the evaluation apparatus of the present embodiment, the resistance value of the three-dimensional frame 1 is managed to a value equivalent to that of the vehicle body so that the three-dimensional frame 1 itself can be used as a ground.

  The actual DC resistance value of the vehicle body is normally suppressed to approximately 4.0 mΩ or less over the entire area. For this reason, in the evaluation apparatus according to the present embodiment, the DC resistance value of the three-dimensional frame 1 is set to 4.0Ω or less at all locations from the front end portion to the rear end portion. Here, with respect to the frame base material constituting the three-dimensional frame 1, when the above-described aluminum extruded material is used, the DC resistance value is suppressed to a sufficiently low value. Therefore, the DC resistance value of the entire three-dimensional frame 1 can be suppressed to 4.0Ω or less if sufficient electrical conductivity can be secured at the joint portion of each frame base material.

  Therefore, in the evaluation apparatus of the present embodiment, the following method is used to secure the conductivity at the joint between the frame base materials so that the resistance value of the three-dimensional frame 1 can be managed to a value equivalent to that of the vehicle body. .

  That is, when using the joining member and the fastening member described above for joining the frame base materials, first, it is assumed that the tightening torque by the fastening member is managed and the resistance value of the three-dimensional frame 1 is managed. That is, the fastening torque by the fastening member is increased by a specified torque from the standard torque required for joining, and the resistance value of the joint is lowered by bringing the frame base materials into close contact with each other. However, if the tightening torque is increased by the specified torque, the DC resistance value of the three-dimensional frame 1 is larger than the DC resistance value of the vehicle body as shown in FIG. The value will increase as it increases. This is because the above-described aluminum extruded material is in a state in which a thin insulating film made of an electrically insulating material is formed on the surface by anodizing, thereby ensuring sufficient electrical conductivity at the joint. It is thought that there is not. Therefore, in the evaluation apparatus according to the present embodiment, the insulating coating is peeled off (anodized peeling) at the joint portion of each frame base material, and the joining member is disposed at the portion where the insulating coating is peeled off, and the fastening member is tightened. The frame base materials are joined together. Then, by increasing the fastening torque of the fastening member at that time by a specified torque, the DC resistance value of the three-dimensional frame 1 can be kept at a sufficiently low value as shown in FIG.

  In addition, the method of ensuring the conductivity at the joint between the frame base materials and managing the resistance value of the three-dimensional frame 1 to a value equivalent to that of the vehicle body is not limited to the above example, and for example, a ground bolt is used. It is also possible to employ a technique for joining the frame base materials or a technique for electrically connecting the bolts of the fastening members used for joining the frame base materials with a bonding wire. FIG. 2 shows the DC resistance value of the three-dimensional frame 1 when these methods are adopted. Further, as described above, when the insulating film is peeled off at the joint portion of the frame base material, a metal surface modifier, specifically, for example, a metal surface modifier (manufactured by Thermal Research Co., Ltd. (Internet <URL: http://www2.tky.3web.ne.jp/~nekken/diatonic.html>) and metal surface modifiers manufactured by Audiotechnica Co., Ltd. (Internet <URL: http: //www.audio- If you apply technica.co.jp/products/cleanica/at6221.html>, etc., as shown in Fig. 2, the DC resistance value of the three-dimensional frame 1 even if the tightening torque by the fastening member is lowered Can be kept at a sufficiently low value.

  As described above, in the evaluation apparatus of the present embodiment, the three-dimensional frame 1 formed by assembling a plurality of frame base materials made of a conductive metal material such as an aluminum extrusion material into a three-dimensional shape simulating a vehicle body. The electronic parts constituting the vehicle electronic electrical system to be evaluated are attached. Then, the resistance value of the three-dimensional frame 1 is managed to the same value as that of the vehicle body, and the ground terminals of the electronic components constituting the vehicle electronic system are electrically connected to the three-dimensional frame 1. Is used as a ground environment equivalent to the car body. Therefore, when evaluating the performance of a vehicle electronic system by conducting an electrical surge test or a vehicle power system switching test, for example, an evaluation environment equivalent to that of a vehicle must be realized and an accurate performance evaluation should be performed. Is possible.

  Further, in the evaluation apparatus of the present embodiment, the resistance value is managed so as to be equal to the resistance value of the actual vehicle body at all locations from the front end portion to the rear end portion of the three-dimensional frame 1. Therefore, if it is on the three-dimensional frame 1, an earth point can be arbitrarily taken. Therefore, it is possible to give the electronic component mounting position on the three-dimensional frame 1 a degree of freedom, and the electronic component is mounted at the same position as when actually mounted on the vehicle, and performance evaluation is performed in the same environment as the vehicle. be able to. Moreover, since the attachment position of the electronic component on the three-dimensional frame 1 can be given a degree of freedom, even if the arrangement of the electronic component is different for each vehicle type, one evaluation device can handle each vehicle type. Evaluation is possible.

  In addition, as described above, the electrical surge test and the switching test of the vehicle power supply system are performed to evaluate the performance of the vehicle electronic system. In addition, in the evaluation apparatus of this embodiment, various devices are incorporated to appropriately perform various performance evaluations of the vehicle electronic system. Hereinafter, other contrivance points incorporated in the evaluation apparatus of the present embodiment will be described in comparison with the conventional evaluation apparatus described in Non-Patent Document 1 described above.

  First, in the evaluation apparatus according to the present embodiment, as shown in FIG. 3, a plate material such as punching metal is pasted on a three-dimensional frame 1 in which a frame base material is assembled in a three-dimensional shape simulating a vehicle body. A surface 5 is formed, and an electronically controlled seat assembly 12 can be mounted on the floor surface 5.

  The electronically controlled seat assembly 12 is an integrated electronic component such as an electronic control unit, sensors, switches, and actuators integrated into the seat body. It is desirable that the evaluation device is mounted and implemented in the same state as when mounted on the vehicle.

  However, in the conventional evaluation apparatus described in Non-Patent Document 1 described above, the three-dimensional frame is formed in a U shape when viewed from above and has a shape without a floor surface. It has been difficult to attach the entire seat assembly 12 to the three-dimensional frame as it is. Therefore, in the conventional evaluation apparatus, when the performance evaluation of the electronically controlled seat assembly 12 is performed, the seat assembly 12 is disassembled, each electronic component is removed from the seat body, and the performance is evaluated by attaching it to an appropriate position of the three-dimensional frame. There is a problem that workability is deteriorated.

  On the other hand, in the evaluation apparatus of the present embodiment, the floor surface 5 is formed on the three-dimensional frame 1, and the electronically controlled seat assembly 12 can be mounted on the floor surface 5 as it is. However, the performance evaluation of the seat assembly 12 can be performed with the same feeling as when driving an actual vehicle, and the workability when the seat assembly 12 is attached can be remarkably improved. Since the floor surface 5 is formed on the three-dimensional frame 1, not only the seat assembly 12 but also other electronic components constituting the electronic electrical system can be easily attached, and the workability in the preparation stage for performance evaluation is greatly improved. It is also possible to improve the effect.

  Moreover, in the evaluation apparatus of this embodiment, as shown in FIG. 4, the stay 13 can be fixed to the three-dimensional frame 1 and the cockpit module 14 can be mounted via the stay 13. Specifically, the dimension in the width direction corresponding to the vehicle width of the three-dimensional frame 1 is made larger than the length of the cockpit module 14, and the side plate 6 made of, for example, punching metal is provided on the side surface. . The pair of stays 13 are fixed so as to protrude inside the side plate 6, and the cockpit module 14 is mounted so as to be sandwiched between the pair of stays 13.

  The cockpit module 14 is a module in which various electronic components such as a meter cluster arranged in front of the vehicle interior of the vehicle, steering, air conditioner, audio, navigation and its display are formed as an integrated module. It is desired that the entire cockpit module 14 be mounted on the evaluation device in the same state as when it is mounted on an actual vehicle.

  However, in the conventional evaluation apparatus described in Non-Patent Document 1 described above, since the three-dimensional frame is not structured to attach the cockpit module 14 as it is, a meter cluster disposed in the front of the vehicle interior of the vehicle, When evaluating the performance of various electronic components such as steering, air conditioner, audio, navigation and its display, these electronic components must be individually attached to the three-dimensional frame, and a jig for installation is created as a preparation stage. However, there is a problem that workability is deteriorated, such as the necessity of designing the ground by examining the electrical ground for each component.

  On the other hand, in the evaluation apparatus of the present embodiment, the three-dimensional frame 1 has a structure in which the cockpit module 14 can be mounted as it is. In addition, it is possible to reduce the number of steps such as creating a mounting jig as a preparation stage. In addition, since the metal member in the cockpit module 14 plays the role of the electrical ground, it is not necessary to consider the electrical ground for each part and to design the ground, and the workability is greatly improved. .

  Moreover, in the evaluation apparatus of this embodiment, the side mirror 6 is provided on the side surface of the three-dimensional frame 1 as described above, so that the door mirror 15 and the power window mechanism 16 are fixed to the side plate 6 as shown in FIG. I can do it. That is, in the evaluation device of this embodiment, with respect to the components mounted on the door of the vehicle, the mountability of the component at the same position as the actual vehicle is ensured, and the internal components of the door are visualized to improve the efficiency of performance evaluation. It is possible to let you.

  Note that a momentary switch for detecting the open / closed state of the vehicle door is usually installed in the vehicle door. However, in the evaluation apparatus according to the present embodiment, the switch state is set instead of the momentary switch for detecting the door open / closed state. An alternate switch that can be held is provided so that the door can be virtually opened or closed.

  The evaluation apparatus according to the present embodiment has a structure in which lights can be attached to the three-dimensional frame 1 so that an operator working inside the three-dimensional frame 1 can easily see the state of lights such as a tail lamp. ing. Specifically, for example, as shown in FIG. 6, when the worker sits on the seat assembly 12 installed on the floor surface 5 of the three-dimensional frame 1, the lights such as the tail lamp 17 are simply turned back. The tail lamp 17 and the like are attached toward the inside of the three-dimensional frame 1 so that the similar state can be visually recognized.

  When the tail lamp 17 is actually mounted on the vehicle, the tail lamp 17 is naturally mounted on the rear end portion of the vehicle so as to light outward. In the conventional evaluation apparatus described in Non-Patent Document 1 described above, the tail lamp 17 is attached from the rear end portion of the three-dimensional frame to the outside in a manner faithful to the actual mounting state on the vehicle. For this reason, there is a problem that the lighting state of the tail lamp 17 cannot be confirmed by an operator who works near the center of the three-dimensional frame.

  On the other hand, in the evaluation apparatus of the present embodiment, the tail lamp 17 is structured to be attached toward the inside of the three-dimensional frame 1, so that one operator who performs work inside the three-dimensional frame 1 is a single tail lamp 17. The operability can be improved, for example, by confirming the lighting condition of the lamp.

  In addition to the method described above, for example, the lighting state of the tail lamp 17 can be used as a method for enabling an operator working inside the three-dimensional frame 1 to easily see the state of the lights such as the tail lamp 17. It is also possible to employ a method of providing a mirror for confirmation or monitoring a blind spot portion by attaching a camera.

  In the evaluation apparatus of the present embodiment, the size of the three-dimensional frame 1 is set to a size smaller than that of an actual vehicle on which the electronic electrical system to be evaluated is mounted in consideration of the length of the harnesses 11 and the like. Yes. Specifically, as shown in FIG. 7, the length L in the front-rear direction of the three-dimensional frame 1 is set to satisfy L ≦ Lv with respect to the actual vehicle length Lv. Further, the height H of the three-dimensional frame 1 is set such that H ≦ Hv with respect to the actual vehicle height Hv. Regarding the width W of the three-dimensional frame 1, the relationship between the actual vehicle width Wv and the length Lm of the cockpit module 14 is set to satisfy Lm <W ≦ Wv. Thereby, the problem that the harnesses 11 are too short to be mounted on the three-dimensional frame 1 can be improved, and various electronic components attached at appropriate positions on the three-dimensional frame 1 are appropriately connected by the harnesses 7. Correct performance evaluation can be performed.

(Second Embodiment)
Next, as another embodiment of the present invention, an example will be described in which a real-time simulator is combined with the configuration of the first embodiment described above to use an evaluation device as a hardware in the loop (HIL) system.

  FIG. 8 is a diagram showing an outline of the evaluation apparatus of the present embodiment. As shown in FIG. 8, the evaluation apparatus of this embodiment includes a real-time simulator 7 that creates various sensor signals in a pseudo manner. The operation of the real-time simulator 7 is controlled based on a control program executed by the information processing terminal 8 such as a personal computer. An electronic control unit 10 of the electronic electrical system attached to the three-dimensional frame 1 is connected to the real-time simulator 7 via a terminal block 9. In the evaluation apparatus according to the present embodiment, various sensor signals artificially created by the real-time simulator 8 are input to the electronic control unit 10, and output signals of the electronic control units 10 are monitored to correct the sensor signals. By performing the re-output, it is possible to evaluate the performance of the electronic electrical system under the same conditions as when the vehicle is actually running.

  FIG. 9 is a diagram conceptually showing the HIL technique by the evaluation apparatus of the present embodiment. In the example shown in FIG. 9, an electronic control unit 21 of an engine control system, an electronic control unit 22 of an automatic transmission control system, an electronic control unit 23 of a brake control system, and an electronic control unit 24 of a meter / cluster system Each of them is connected together with another electronic control unit 25 by a communication cable 26. Then, for each of these electronic control units, various sensor signals, for example, an engine speed sensor signal, which are artificially created by the real-time simulator 7 are input to the electronic control unit that requires these signals. It has become. Further, among the output signals of the respective electronic control units, for example, signals necessary for performance evaluation such as injector injection signals are fed back to the real-time simulator 7, and the real-time simulator 7 outputs an output based on the fed-back signals. By performing an operation such as adjustment, an evaluation environment equivalent to the traveling state of the vehicle is created.

  As described above, in the evaluation apparatus of the present embodiment, the real-time simulator 7 is combined with the evaluation apparatus of the first embodiment described above so that it can operate as an HIL system. Therefore, the effects of the first embodiment described above. In addition, it is possible to obtain an effect that performance evaluation can be performed under conditions in a wide range equivalent to that of an actual vehicle.

It is a perspective view which shows roughly an example of the evaluation apparatus to which this invention is applied. It is a figure which shows the relationship between the method of joining the frame base material which comprises a three-dimensional frame, and the direct current | flow resistance value of a three-dimensional frame. It is a perspective view which shows the state which mounted the seat assembly on the floor surface of a three-dimensional frame. It is a perspective view which shows the state which attached the cockpit module to the three-dimensional frame via the stay. It is a perspective view which shows the state which attached the mechanism part of the door mirror and the power window to the side plate provided in the three-dimensional frame. It is a perspective view which shows the state which attached the tail lamp to the three-dimensional frame. It is a figure for demonstrating the size of a three-dimensional frame by contrast with the size of a real vehicle. It is another example of the evaluation apparatus to which the present invention is applied, and is a perspective view schematically showing an evaluation apparatus configured as an HIL system. It is a figure which shows notionally the technique of HIL by the evaluation apparatus to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Three-dimensional frame 4 Power supply device 5 Floor surface 6 Side plate 7 Real time simulator 8 Information processing device 10 Electronic control unit 11 Harnesses 12 Seat assembly 14 Cockpit module 15 Door mirror 16 Power window mechanism part 17 Tail lamp

Claims (5)

An evaluation device for evaluating the performance of a vehicle electronic system mounted on a vehicle,
A plurality of frame base materials made of a conductive metal material are assembled and formed into a three-dimensional shape simulating a vehicle body, and includes a three-dimensional frame to which electronic components constituting a vehicle electronic electrical system to be evaluated are attached.
A resistance value of the three-dimensional frame is managed to a value equivalent to that of the vehicle body, and a ground terminal of an electronic component constituting the electronic electronic system for the vehicle is electrically connected to the three-dimensional frame. Evaluation system for electronic electrical systems for automobiles. The frame base material is joined to another adjacent frame base material by fastening a fastening member, and the resistance value of the three-dimensional frame is managed by managing the fastening torque of the fastening member. The evaluation apparatus for a vehicle electronic system according to claim 1. The insulating film made of an electrically insulating material is formed on the surface of the frame base material, and the insulating film is peeled off at a joint portion with another adjacent frame base material. 3. The evaluation apparatus for a vehicle electronic electrical system according to 1 or 2. The evaluation apparatus for an electronic system for a vehicle according to claim 3, wherein a metal surface modifier is applied to a portion of the frame base material from which the insulating film has been peeled off. An evaluation method for evaluating the performance of a vehicle electronic system mounted on a vehicle,
Attach electronic components that constitute the vehicle electronic electrical system to be evaluated to a three-dimensional frame formed by assembling a plurality of frame base materials made of a conductive metal material into a three-dimensional shape simulating a vehicle body, Managing the resistance value of the three-dimensional frame to a value equivalent to that of the vehicle body, and electrically connecting a ground terminal of an electronic component constituting the vehicle electronic component system to the three-dimensional frame. A method for evaluating an electronic system for a vehicle, characterized by evaluating the performance of the electrical system.

Images