JP2005274541A - Inspection device and inspection method for occupant detection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection device and inspection method for occupant detection system capable of effectively suppressing malfunction of an occupant detection system. <P>SOLUTION: The inspection device 1 for occupant detection system performs calibration of a seat sensor for the occupant detection system for detecting the load of an occupant seated in a seat 100 by the seat sensor. The inspection device 1 comprises a first inspection stage 2B for adding a load to the seating face of the seat 100; a second inspection stage 2C for adding a load of a kind different from that of the load to the seating face of the seat 100; a inspection controllers 3B and 3C for acquiring a first output value of the seat sensor to the load in the first inspection stage 2B and a second output value of the seat sensor to the load in the second inspection stage 2C, and a main controller 4 setting a threshold of the seat sensor based on the first output value and the second output value. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an inspection apparatus and an inspection method for an occupant detection system.

  Conventionally, an occupant detection system mounted on an automobile seat is known. The occupant detection system is a system that detects characteristics of an occupant seated on a seat (for example, an adult or a child) in order to appropriately control an air bag and a seat belt in a car. In such an occupant detection system, an occupant seated by a seat sensor installed on a seat is detected to determine the characteristics of the occupant, and the airbag control and seat belt take-up control are performed accordingly. In such a seat sensor, for example, a seat sensor for detecting a strain by providing a strain sensor in a vehicle body mounting portion or a seat rail portion of the seat or a mat member having a plurality of pressure-sensitive sensors is placed under the seat cushion. A seat sensor that detects a load distribution on a seat and a seat sensor that detects a displacement of a seat by placing a load receiving portion having a displacement sensor under a seat cushion (for example, see Japanese Patent Application Laid-Open No. 2004-58837) are known. ing.

  Here, the characteristics of the occupant are determined by the seat ECU included in the occupant detection system comparing the recorded threshold value with the output value of the seat sensor (detection voltage of the strain sensor, pressure sensor, or displacement sensor). Is done. This threshold value is measured by a calibration inspection of the sheet sensor and written in the ECU for the sheet.

  As a device for performing such inspection, a technique described in Patent Document 1 is known as a conventional inspection device for an occupant detection system. In a conventional inspection device for an occupant detection system, a predetermined bottom shape is pressed against a seat by a single inspection stage, a load is applied, and an output value of the seat sensor with respect to the load is measured. Then, the measured output value is set as a threshold value and recorded in the seat ECU, whereby the sheet sensor is calibrated.

  However, in the occupant detection system, generally, the urethane material or the like constituting the seat member has individual differences, and thus the output value of the seat sensor with respect to the load varies during the calibration inspection. For this reason, the occupant detection system misidentifies the characteristics of the occupant due to the variation in the output value, and there is a problem that malfunction occurs in the control of the airbag and the take-up control of the seat belt.

US2002 / 0066302A1

  Accordingly, the present invention has been made in view of the above, and an inspection apparatus and an inspection method for an occupant detection system that can effectively suppress malfunction of the occupant detection system by correcting variations in the output value of the seat sensor. The purpose is to provide.

  In order to achieve the above object, an inspection apparatus for an occupant detection system according to the present invention is an inspection apparatus for an occupant detection system that calibrates a seat sensor for an occupant detection system that detects a load of an occupant seated on a seat by a seat sensor. A first inspection stage for applying a load to the seating surface of the seat, a second inspection stage for applying a load different from the load to the seating surface of the seat, and a sheet sensor for the load at the first inspection stage An inspection controller for acquiring a first output value of the sheet sensor and a second output value of the sheet sensor with respect to a load at the second inspection stage, and a threshold value of the sheet sensor based on the first output value and the second output value And a main controller for setting.

  In this inspection apparatus, different types of loads are applied to the sheet to obtain the output value (first output value and second output value) of the sheet sensor, and the threshold value of the sheet sensor is set using these output values. As compared with the configuration in which the threshold value is set by a single output value, the variation in the output value of the sheet sensor is effectively corrected. Thereby, there exists an advantage by which the malfunctioning of a passenger | crew detection system is suppressed effectively.

  The inspection device for an occupant detection system according to the present invention includes a preload stage for applying a preload to the seat prior to the application of the load at the first inspection stage and the second inspection stage.

  In this inspection apparatus, since the output value of the sheet sensor with respect to the load is measured after the sheet is habituated by adding a preliminary load, there is an advantage that the measurement accuracy of the output value is improved.

  In the inspection device for an occupant detection system according to the present invention, the threshold value is calculated from an average value of the acquired output values.

  In this inspection apparatus, since the average value of the output values with respect to the load is set as the threshold value of the sheet sensor, there is an advantage that the variation in the output value of the sheet sensor is more accurately corrected.

  In the occupant detection system inspection apparatus according to the present invention, a bottom type is used as a means for applying a load or a preload to the seat, and the seat sensor is displaced by receiving a load of a seated occupant. It comprises a receiving part and a displacement sensor for detecting the displacement of the load receiving part as a displacement of the seat.

  In this inspection apparatus, the sheet sensor is calibrated using a bottom shape for a sheet on which a sheet sensor for detecting the displacement (deflection) of the load receiving portion as the displacement (deflection) of the sheet is installed. Thereby, since the load receiving portion is displaced following the tail shape, there is an advantage that the sheet sensor can accurately detect the displacement (deflection) of the sheet.

  In the occupant detection system inspection apparatus according to the present invention, the first inspection stage applies a load to the seat using an adult buttocks, and the second inspection stage applies a load using a child buttocks. Add to the sheet.

  In this inspection apparatus, the output value of the sheet sensor is acquired using the adult buttocks and the child buttocks, and the threshold value is set. Therefore, there is an advantage that variation in the output value of the sheet sensor is more effectively corrected. is there.

  In the occupant detection system inspection apparatus according to the present invention, the load is applied to the seat by free fall of an adult buttocks or a children's buttocks.

  In this inspection device, a load is applied to the seat due to the free fall of the bottom mold, and the output value of the seat sensor is measured. Compared with the configuration in which the bottom mold is pressed against the seating surface of the seat and the output value is measured. Data stabilizes in a short time. This has the advantage that the time required for measuring the output value can be shortened.

  Also, the inspection apparatus for an occupant detection system according to the present invention is such that the drop height of the adult buttocks or the child buttocks is such that the adult buttocks or the child buttocks that have fallen on the seat is the elasticity of the seat. Is the height at which it is pushed back and rests at that position.

  In this inspection apparatus, the falling height of the bottom mold is adjusted such that the bottom mold that has dropped onto the sheet is pushed back once by the elasticity of the sheet and is stopped at that position. Accordingly, there is an advantage that a threshold value can be set in consideration of hysteresis caused by the material of the sheet.

  In the inspection apparatus for an occupant detection system according to the present invention, the first output value and the second output value are obtained by arranging the first inspection stage and the second inspection stage on a single inspection line. Is obtained by a flow process.

  In this inspection apparatus, since the acquisition of the first output value and the second output value is performed by flow work, there is an advantage that the output value is efficiently measured.

  An inspection device for an occupant detection system according to the present invention is an inspection device for an occupant detection system that performs calibration of a seat sensor with respect to an occupant detection system that detects a load of an occupant seated on a seat by a seat sensor. An inspection stage that can add at least two types of loads to the seating surface, an inspection controller that respectively obtains output values of the seat sensor for the at least two types of loads, and a threshold value of the seat sensor based on the acquired output values And a main controller to be set.

  In this inspection apparatus, the output value of the sheet sensor is acquired using at least two types of loads, and the threshold value of the sheet sensor is set using these output values. Therefore, the threshold value is set by a single output value; In comparison, the variation in the output value of the sheet sensor is effectively corrected. Thereby, there exists an advantage by which the malfunctioning of a passenger | crew detection system is suppressed effectively.

  An inspection method for an occupant detection system according to the present invention is an inspection method for an occupant detection system that calibrates a seat sensor for an occupant detection system that detects a load of an occupant seated on a seat by a seat sensor. A first inspection step of adding a load to the seating surface of the sheet, a second inspection step of adding a load different from the load to the seating surface of the seat, and a first output value of the sheet sensor with respect to the load at the first inspection stage And a setting step of acquiring a second output value of the sheet sensor with respect to the load at the second inspection stage, and setting a threshold value of the sheet sensor based on the first output value and the second output value; It is characterized by including.

  The occupant detection system inspection method according to the present invention includes a preloading step of applying a preload to the seat prior to the first inspection step and the second inspection step.

  According to the inspection apparatus of the present invention, different load is applied to the sheet to obtain the output value (first output value and second output value) of the sheet sensor, and the threshold value of the sheet sensor is set using these output values. Therefore, as compared with the configuration in which the threshold value is set with a single output value, the variation in the output value of the seat sensor is effectively corrected, and the malfunction of the occupant detection system is effectively suppressed.

  Hereinafter, the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements of the embodiments described below include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  FIG. 1 is a perspective view showing an inspection device for an occupant detection system according to an embodiment of the present invention. FIG. 2 is a view showing an inspection stage of the inspection apparatus shown in FIG. The inspection apparatus 1 includes inspection stages 2A to 2C, inspection controllers 3A to 3C, a main controller 4, and a sheet conveying unit 5. This inspection apparatus 1 (inspection method) measures the output value of the sheet sensor using two types of buttocks (an adult buttocks AF and a child buttocks AC), and outputs the output values at each buttocks AF and AC. It is characterized in that the variation of the output value with respect to the load can be corrected by setting (calibrating) the average value as the threshold value of the sheet sensor.

  The inspection stages 2A to 2C include an adult buttocks type AF or children's buttocks type AC, and loading means 21 for freely dropping the buttocks from a predetermined height. Here, the inspection stages 2A to 2C are classified into a preliminary inspection stage 2A, a first inspection stage 2B, and a second inspection stage 2C, and are arranged on the inspection line of the sheet conveying unit 5 in this order. Further, an adult buttocks type AF is installed in the preliminary examination stage 2A and the first examination stage 2B, and a children's buttocks type AC is installed in the second examination stage 2C. These inspection stages 2 </ b> A to 2 </ b> C release the support by the loading means 21 to freely drop the bottom type AC, AF onto the seating surface of the seat 100, and load the seat 100 according to the weight of the bottom type AF, AC. Give. The bottom mold that has fallen on the sheet 100 is pulled up by the loading means 21 after the output value is measured.

  The adult butt AF is a weight having a butt shape, for example, has an average weight (about 50 kg) when an adult woman is seated, and has the butt shape of an adult woman. Eggplant. The child's butt-type AC is a weight having a butt-shape, for example, has an average weight (about 15 to 18 kg) when a child (three-year-old child) is seated, and has a child's butt-type. Make a shape.

  The inspection controllers 3A to 3C are installed corresponding to the inspection stages 2A to 2C, respectively. The inspection controllers 3A to 3C are communicably connected to the corresponding inspection stages 2A to 2C. Specifically, a preliminary inspection controller 3A is connected to the preliminary inspection stage 2A, a first inspection controller 3B is connected to the first inspection stage 2B, and a second inspection controller 3C is connected to the second inspection stage 2C. ing. These inspection controllers 3A to 3C perform drive control of the corresponding inspection stages 2A to 2C. Each inspection controller 3 </ b> A to 3 </ b> C is connected to the seat ECU 140 of the seat 100 at the time of inspection, receives the output value of the sheet sensor 130 (see FIG. 6) acquired by the seat ECU 140, and transmits it to the main controller 4. To do.

  The main controller 4 is, for example, a PC (Personal Computer), and is communicably connected to the inspection controllers 3A to 3C. The main controller 4 transmits / receives data to / from the inspection controllers 3A to 3C, and controls driving of the inspection controllers 3A to 3C.

  The sheet conveying unit 5 is a belt conveyor that conveys the sheet 100 and includes a passage line and an inspection line. The passing line is a line that conveys a driver seat side that does not require a calibration inspection. The inspection line is a line that conveys a passenger seat (Passenger Seat) on which a calibration inspection is performed. This inspection line is branched from the passage line, and inspection stages 2A to 2C and inspection controllers 3A to 3C are arranged on the conveyance path of the sheet 100.

  In this embodiment, a case will be described in which an occupant detection system is not provided on the driver's seat. An occupant detection system may be provided on the seat on the driver's seat side. In this case, the inspection stages 2A to 2C and the inspection controllers 3A to 3C are arranged on the line for conveying the driver seat side sheet shown in FIG. 1 in the same manner as the inspection line. Or it is good also as an inspection line only, without dividing a line into the passage line and inspection line which are shown in FIG.

  FIG. 6 is a perspective view illustrating an example of a seat of an occupant detection system to be inspected. The seat 100 includes a seat member 101, a seat frame 120, a seat sensor 130, and a seat ECU (Engine Control Unit) 140. The seat ECU 140 is connected to the airbag ECU 200. .

  The seat member 101 is made of, for example, a urethane material and constitutes a seating surface of the seat. The seat frame 120 is a member for fixing the seat member 101 on the floor panel of the vehicle body. The seat sensor 130 is a means for detecting the load of a seated occupant. The seat ECU 140 is a control unit that compares the output value (detection voltage of the strain sensor, pressure sensor, or displacement sensor) of the seat sensor 130 with a predetermined threshold value to determine the characteristics of the occupant (for example, adult or child). is there. The threshold value is measured by a calibration inspection of the sheet sensor 130 and written in the seat ECU 140.

  Here, the sheet sensor 130 includes a displacement sensor type sheet sensor (for example, see Japanese Patent Application Laid-Open No. 2004-58837). The sheet sensor 130 includes a load receiving portion 131, a plurality of springs 132, and a displacement sensor 133. The load receiving portion 131 is a member that is disposed on the seat frame 120 and is displaced by receiving a load of a seated occupant. The plurality of springs 132 are members that support the load receiving portion 131 on the seat frame 120. The displacement sensor 133 is a sensor that detects the displacement of the load receiving member 131 as the displacement of the seat. As the seat sensor, in addition to the displacement sensor type seat sensor 130, for example, there is a strain sensor type seat sensor or a pressure sensitive sensor that detects a pressure distribution when a passenger is seated. A sensor type sheet sensor or the like is known.

  FIG. 3 is a flowchart showing a calibration inspection process. 4 and 5 are graphs showing the relationship between the load on the sheet and the output value of the sheet sensor.

  In this inspection apparatus 1, an occupant sheet 100 is conveyed on the inspection line of the sheet conveying unit 5, and passes through inspection stages 2A to 2C in the order of preliminary inspection stage 2A, first inspection stage 2B, and second inspection stage 2C. (See FIG. 1). Then, the sheet 100 is calibrated on this inspection line, and management data and control data including a predetermined threshold value are written in the sheet ECU 140.

  First, in the preliminary inspection stage 2A, a preliminary loading step (break-in step) for pre-pressing the sheet 100 is performed (see FIGS. 1 and 3). In this preliminary loading step, the adult bottom AF is dropped once onto the seating surface of the seat 100 from a predetermined drop height, and the seat 100 is accustomed (ST1). Further, in this preliminary loading step, zero point data (the output value of the sheet sensor 130 with no load) of the sheet 100 is measured (ST11). Specifically, the seat ECU 140 acquires zero point data from the sheet sensor 130 and transmits the zero point data to the preliminary inspection controller 3A (ST12), and the preliminary inspection controller 3A transmits the zero point data to the main controller 4. The bottom drop height is set in accordance with the specification and type of the sheet 100 to be inspected. For example, the falling height of the bottom mold is adjusted such that the bottom mold that has fallen on the sheet 100 is pushed back once by the elasticity of the sheet 100 and stops at that position.

  Next, in the first inspection stage 2 </ b> B, a first load process for measuring the output value of the sheet sensor 130 with respect to the load is performed. In this first loading process, the adult bottom AF is dropped once from a predetermined drop height onto the seating surface of the seat 100 (ST2), and the first output value (displacement) of the sheet sensor 130 after a predetermined elapsed time is reached. The detection voltage of the sensor 133) is measured (ST21). Specifically, the seat ECU 140 acquires the first output value from the seat sensor 130 and transmits the first output value to the first inspection controller 3B (ST22), and the first inspection controller 3B transmits the first measurement value to the main controller 4. To do. In the first load process, the predetermined drop height is set to be the same as that in the preliminary load process (ST1). The predetermined elapsed time is, for example, the time when the bottom mold that has fallen on the sheet 100 is pushed back once by the elasticity of the sheet 100 and stopped.

  Next, in the second inspection stage 2 </ b> C, a second loading process for measuring the output value of the sheet sensor 130 with respect to the load is performed. In this second loading step, the child's bottom AC is dropped once from the predetermined drop height onto the seating surface of the seat 100 (ST3), and the second output value (displacement) of the seat sensor 130 after a predetermined elapsed time. The detection voltage of the sensor 133) is measured (ST31). Specifically, the seat ECU 140 measures the second output value and transmits it to the second inspection controller 3C (ST32), and the second inspection controller 3C transmits the second measurement value to the main controller 4. In the second load process, the predetermined drop height is set to be the same as that in the preliminary load process (ST1). Further, the predetermined elapsed time is set to be the same as that in the first load step (ST2).

Next, the main controller 4 calculates and sets a threshold value based on the measured first output value and second output value (setting step). The threshold value is an average value of the first output value and the second output value, and is specifically calculated by the following equation (see FIG. 4).
Threshold = {(first output value) − (second output value)} / 2+ (first output value)
Threshold = {(first output value) + (second output value)} / 2
Here, since the first output value and the second output value vary depending on the type, material, and shape of the sheet 100, the threshold value is different for each sheet 100 (see FIG. 5). Therefore, a unique threshold value is calculated and set for each sheet 100.

  The set threshold value is transmitted to the second inspection controller 3C together with other control data and management data (ST41), and written to the seat ECU 140 of the sheet 100 together with other data by the second inspection controller 3C (ST42). . The second inspection controller 3C confirms various data written in the seat ECU 140 (ST41) and transmits the data to the main controller 4.

  In the inspection apparatus 1, the bottom shape is dropped on the sheet 100 to acquire the output value of the sheet sensor 130, and the threshold value of the sheet sensor 130 is set using these output values. As a result, a unique threshold value is set for each sheet 100, so that the variation in the output value of the sheet sensor 130 due to individual differences for each sheet 100 (difference in the type, material, and shape of the sheet 100) is corrected. is there.

  Further, in this inspection apparatus 1, the output value (first output value and second output value) of the sheet sensor 130 is acquired using at least two types of loads (adult ass type AF and child ass type AC), Since the threshold value of the sheet sensor 130 is set using these output values, variations in the output value of the sheet sensor 130 are effectively corrected as compared with a configuration in which the threshold value is set by a single output value. Thereby, there exists an advantage by which the malfunctioning of a passenger | crew detection system is suppressed effectively. In particular, in this inspection apparatus 1, since the average value of the output values in each of the bottom AFs and AC is set as the threshold value of the sheet sensor 130, there is an advantage that the variation in the output value of the sheet sensor 130 is more accurately corrected. .

  Moreover, in this inspection apparatus 1, since the output value of the sheet sensor 130 with respect to the load is measured after the seat 100 is accustomed in the preloading step (ST1), there is an advantage that the measurement accuracy of the output value is improved.

  Further, in the inspection apparatus 1, the seat 100 (see Japanese Patent Application Laid-Open No. 2004-58837) on which the sheet sensor 130 that detects the displacement (deflection) of the load receiving portion 131 as the displacement (deflection) of the sheet is installed. The sheet sensor 130 is calibrated using the molds (adult butt AF and child butt AC). As a result, the load receiving portion 131 is displaced following the butt shape (the adult butt shape AF and the child butt shape AC), so that the sheet sensor 130 can accurately detect the displacement (deflection) of the sheet 100.

  Further, in this inspection apparatus 1, since the load is applied to the seat 100 due to the free fall of the bottom AF, AC, and the output value of the sheet sensor 130 is measured, the output value is obtained by pressing the bottom mold against the seating surface of the seat. Compared to the configuration to be measured, the data (first output value and second output value) is stabilized in a short time. This has the advantage that the time required for measuring the output value can be shortened. However, the present invention is not limited to this, and the output value of the seat sensor 130 may be measured by pressing the bottom AF or AC against the seating surface of the seat.

  Further, in the inspection apparatus 1, the height of the bottom mold is adjusted such that the bottom mold dropped on the sheet 100 is once pushed back by the elasticity of the sheet 100 and stops at that position. In such a configuration, the influence of hysteresis (hysteresis generated by plastic deformation of the sheet member 101) caused by the influence of the material of the sheet member 101 at the time of inspection is reduced, so that an error in the output value due to such hysteresis is reduced. The Thereby, there is an advantage that a threshold value considering such hysteresis can be set.

  Further, in this inspection apparatus 1, since the output value of the seat sensor 130 is measured using the bottom AF, AC, compared to the case where the output value is measured using a plate-like member, it is closer to when the occupant is seated. There is an advantage that an output value can be obtained.

  In this inspection apparatus 1, each of the inspection stages 2A to 2C has one butt shape of either the adult butt type AF or the child butt type AC, and these inspection stages 2A to 2C sequentially have the butt type. By dropping the sheet 100, the output value of the sheet sensor 130 is measured. Such a configuration is preferable in that a calibration inspection of the sheet 100 can be performed by a flow operation. However, the present invention is not limited to this, and the inspection apparatus 1 may have only a single inspection stage 2, and the inspection stage 2 may have a structure capable of exchanging the adult buttocks AF and the children buttocks AC ( (Not shown). In such a configuration, the single inspection stage 2 replaces the adult buttocks AF and the child buttocks AC, and thereby the output value of the sheet sensor 130 for each buttocks AF and AC is measured. According to such a configuration, since inspection can be performed only by the single inspection stage 2, there is an advantage that the inspection apparatus 1 can be saved in space.

  Moreover, in this inspection apparatus 1, although inspection controllers 3A-3C and the main controller 4 are comprised separately, these may be integrated and comprised. For example, the main controller 4 may be configured to use any of the inspection controllers 3A to 3C, or the inspection controllers 3A to 3C, and further, the main controller 4 may be configured by a single controller (not shown). .

  Further, in the inspection apparatus 1, a load is applied to the seat 100 using the adult buttocks AF and the children buttocks AC, and the output value of the sheet sensor 130 is acquired. However, the present invention is not limited to this, and other types of bottom shapes may be used, and output values may be acquired using three or more types of bottom shapes. Alternatively, the output value may be acquired using one type of bottom shape. Further, in addition to the free fall of the bottom mold, the bottom mold may be pressed to apply a load.

  As described above, the occupant detection system inspection apparatus and inspection method according to the present invention are useful in that malfunction of the occupant detection system can be effectively suppressed by correcting variations in the output value of the seat sensor.

It is a perspective view showing an inspection device of an occupant detection system concerning an example of this invention. It is a figure which shows the test | inspection stage of the test | inspection apparatus described in FIG. It is a flowchart which shows the process of a calibration test | inspection. It is a graph which shows the relationship between the load to a sheet | seat, and the output value of a sheet | seat sensor. It is a graph which shows the relationship between the load to a sheet | seat, and the output value of a sheet | seat sensor. It is a perspective view which shows an example of the sheet | seat of the passenger | crew detection system which is a test object.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection apparatus 2A Preliminary inspection stage 2B 1st inspection stage 2C 2nd inspection stage 3A Preliminary inspection controller 3B 1st inspection controller 3C 2nd inspection controller 4 Main controller 5 Sheet conveyance part 21 Loading means AF Adult bottom type AC For children Ass type

Claims (11)

About an occupant detection system that detects the load of an occupant seated on a seat by a seat sensor, an inspection device for the occupant detection system that calibrates the seat sensor,
A first inspection stage for applying a load to the seating surface of the seat;
A second inspection stage for applying a load different from the load to the seating surface of the seat;
An inspection controller for obtaining a first output value of the sheet sensor with respect to the load at the first inspection stage, and a second output value of the sheet sensor with respect to the load at the second inspection stage;
A main controller that sets a threshold value of the sheet sensor based on the first output value and the second output value;
An inspection device for an occupant detection system.   The occupant detection system inspection apparatus according to claim 1, further comprising a preload stage that applies a preload to the seat prior to load application at the first inspection stage and the second inspection stage.   The occupant detection system inspection apparatus according to claim 1, wherein the threshold value is calculated from an average value of the acquired output values.   As a means for applying a load and a preload to the seat, a bottom type is used, and the seat sensor is configured to receive a load of a seated occupant and to displace the seat, and to displace the load receiving portion of the seat. The inspection device for an occupant detection system according to any one of claims 1 to 3, comprising a displacement sensor that detects the displacement of the occupant.   The first inspection stage applies a load to the seat using an adult buttocks, and the second inspection stage applies a load to the seat using a children's buttocks. Inspection device for occupant detection system as described in 1.   The occupant detection system inspection apparatus according to claim 5, wherein the load is applied to the seat by free fall of an adult buttocks or a children's buttocks.   The drop height of the adult buttocks or children's buttocks is the height at which the adult buttocks or children's buttocks that have fallen on the seat are pushed back once by the elasticity of the seat and rest at that position. The occupant detection system inspection apparatus according to claim 5 or 6.   The acquisition of the first output value and the second output value is performed by a flow operation by arranging the first inspection stage and the second inspection stage on a single inspection line. The inspection device for an occupant detection system according to any one of the above. About an occupant detection system that detects the load of an occupant seated on a seat by a seat sensor, an inspection device for the occupant detection system that calibrates the seat sensor,
An inspection stage that can apply at least two types of loads to the seating surface of the seat,
An inspection controller that obtains output values of the sheet sensor for the at least two types of loads,
A main controller that sets a threshold value of the sheet sensor based on the acquired output value;
An occupant detection system inspection device comprising: About an occupant detection system for detecting a load of an occupant seated on a seat by a seat sensor, an inspection method for the occupant detection system for calibrating the seat sensor,
A first inspection process for applying a load to the seating surface of the seat;
A second inspection step of adding a load different from the load to the seating surface of the seat;
The first output value of the sheet sensor with respect to the load at the first inspection stage and the second output value of the sheet sensor with respect to the load at the second inspection stage are respectively acquired, and the first output value and the second output value are obtained. A setting step for setting a threshold value of the sheet sensor based on the output value;
A method for inspecting an occupant detection system.   The occupant detection system inspection method according to claim 10, further comprising a preloading step of adding a preload to the seat prior to the first inspection step and the second inspection step.

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