JP2003287517A - Correction-resistor mounting method and auxiliary system for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a correction-resistor mounting method for surely preventing a correction resistor from being sorted or mounted erroneously and to provide an auxiliary system for the mounting method. <P>SOLUTION: The correction-resistor mounting method in which a plurality of kinds of correction resistor used to correct an individual difference in a characteristic of a sensor are mounted on a connector shell of a connector connected to the sensor comprises a first process wherein the characteristic of the sensor is measured and a resistance value of the correction resistor required for correcting the sensor is calculated on the basis of the characteristic; a second process wherein the correction resistor corresponding to the calculated resistance is sorted and the resistance of the correction resistor is measured; a third process in which whether the calculated resistance is matched to the resistance of the correction resistor is confirmed; and a fourth process in which when it is confirmed that the resistance is matched, the correction resistor and the connector shell of the connector at the sensor are mounted. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a correction resistor mounting method and its auxiliary system for mounting a plurality of types of correction resistors for correcting individual differences in sensor characteristics on a connector shell of a connector for connecting to a sensor, and particularly to an appropriate system thereof. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a correction resistor mounting method capable of mounting a correction resistor at a corresponding proper mounting position and its auxiliary system.

[0002]

2. Description of the Related Art A sensor is a device or element for detecting and measuring physical quantities such as the presence, speed, weight, temperature, length, force and concentration of an object. The sensors are subtly different for each individual sensor even if they are the same due to manufacturing variations, etc., and if a physical quantity is calculated based on certain characteristics, a sufficiently high accuracy may be obtained depending on the individual difference of the sensor. It may not be possible. Therefore, the sensor is provided with a correction resistor that measures the individual difference and corrects the specific characteristic according to the measured individual difference.

Further, some sensors have a connector through a cable for convenience of assembly, repair, etc.,
In this case, there is a correction resistor having a terminal portion, which is attached to a connector shell that saves more space than the sensor body (see Japanese Patent Laid-Open No. 11-281617).

[0004]

However, when the compensation resistor is attached to the connector shell of the sensor connector,
Since there are a plurality of types (for example, 30 types or more) of the correction resistors themselves, there is a possibility that the correction resistors are erroneously selected.

Further, in the case where the correction resistor is attached to the connector shell, there are many things that cannot be disassembled once the correction resistor is attached to the connector for the reason of securing strength, simplification, etc., and the correction work is not allowed. A sensor that is erroneously attached basically becomes defective (NG).

It is an object of the present invention to provide a correction resistor mounting method and an auxiliary system for the correction resistor, which can surely avoid erroneous selection of correction resistors and can reliably reduce defective products.

[0007]

According to a first aspect of the present invention, there is provided a correction resistor mounting method for mounting a plurality of types of correction resistors for correcting individual differences in sensor characteristics to a connector shell of a connector connected to the sensor. A first step of measuring a characteristic of the sensor and calculating a resistance value of the correction resistor necessary for correcting the sensor based on the characteristic,
A second step of selecting the correction resistor corresponding to the resistance value calculated in the first step and measuring the resistance value of the correction resistor; and a resistance value calculated in the first step. The third step of confirming whether or not the resistance value of the correction resistor matches, and the resistance value calculated in the first step and the resistance value of the correction resistor were confirmed to match. In this case, a fourth step of attaching the correction resistor and the connector shell of the connector of the sensor whose characteristics have been measured in the first step is included.

By performing the correction resistance mounting method, it is possible to mount a plurality of types of correction resistances on the connector shell of the connector of the sensor measured in the first step without making a mistake. That is, erroneous selection of the correction resistors can be reliably avoided, and defective products can be reliably reduced.

In order to match the resistance value calculated in the first step with the resistance value of the correction resistor,
It is also possible to select a correction resistor having a resistance value that matches the resistance value calculated in the step of 1., a certain range is set for the resistance value of the correction resistor, and the first step is set within that range. If the calculated resistance value is applicable, the correction resistance may be selected.

By the way, there are some sensors that simultaneously detect and measure a plurality of physical quantities (for example, oxygen concentration and nitrogen oxide concentration in a NOx sensor). To improve the detection accuracy for each physical quantity, a plurality of corrections are made. A resistor may be attached to the sensor (see Japanese Patent Laid-Open No. 11-281617). In this case, since the mounting position of the connector shell of the connector to which each compensation resistor is attached is determined, even if each compensation resistor is correctly selected from among multiple types of compensation resistors, each compensation resistor is attached to the connector shell of the sensor connector. When mounting, the mounting position of each compensation resistor may be incorrect.

Therefore, in the correction resistor mounting method,
The sensor has a plurality of characteristics, and the correction resistor corresponding to each of the characteristics one-to-one is attached to a connector shell of the connector, and the connector shell has a correction corresponding to each of the characteristics one-to-one. And a resistance mounting portion, wherein the first step measures a plurality of characteristics of the sensor, individually calculates resistance values of the correction resistors necessary for correction of the sensor based on the characteristics, and In the third step, it is confirmed whether or not the resistance value calculated in the first step and the resistance values of the plurality of correction resistors match each other, and the fourth step is the first step. When it is confirmed that the resistance value calculated in the step and the resistance values of the plurality of correction resistors match each other, it is preferable to attach the correction resistor to the corresponding correction resistor mounting portion.

That is, it is confirmed whether or not each resistance value of the correction resistance and each resistance value calculated in the first step corresponding thereto are matched one by one, and the corresponding correction resistance mounting portion is checked. It is possible to attach the correction resistor to the connector shell of the connector of the sensor without making a mistake in the attachment position. That is, erroneous mounting of the correction resistor can be reliably avoided, and defective products can be reliably reduced.

When the correction resistors are attached to the corresponding correction resistor mounting portions, it is better to attach a plurality of correction resistors at the same time, rather than individually attaching each correction resistor to the corresponding correction resistor mounting portion. Also, when installing at the same time,
It is better to attach a plurality of correction resistors to the auxiliary member attached to the connector shell only when the predetermined position is reached, and attach them to the correction resistor attachment portion. This makes it possible to avoid further incorrect mounting.

Further, in the performance measurement of the gas sensor, since it is necessary to create a constant atmosphere, so-called batch measurement (batch measurement is wide) in which characteristics of a plurality of (20 or more simultaneously) sensors are measured at the same time, In this case, a correction resistor corresponding to one sensor may be attached to another sensor.

Therefore, in the correction resistor mounting method,
The sensor measuring jig electrically and mechanically connects connectors of the plurality of sensors at predetermined positions, and simultaneously measures characteristics of the plurality of sensors in the first step. In the step (2), when the connector of the corresponding sensor is removed from the sensor measuring jig, it is preferable to confirm whether or not the correct connector is removed. As a result, it is possible to reliably avoid attaching the correction resistor corresponding to one sensor to another sensor, and to reliably reduce defective products.

In the correction resistance mounting method, after the correction resistance corresponding to the resistance value calculated in the first step is electrically connected to the correction resistance measuring jig, the correction resistance measurement jig is connected to the correction resistance measuring jig.
It is preferable that the connection state between the correction resistance measuring jig and the correction resistance is confirmed until the correction resistance and the connector shell of the sensor are attached in the step (1). Thereby, the resistance value calculated in the first step,
Since it is possible to more reliably attach the correction resistor and the connector shell of the sensor connector in a state where it can be confirmed that the resistance value of the correction resistor matches, it is possible to reliably reduce defective products.

Moreover, in the correction resistor mounting method,
At the time of attaching the correction resistor and the connector shell of the sensor in the fourth step, it is preferable to confirm the attachment state. As a result, it is possible to avoid a case where the correction resistor and the connector shell are not properly attached, and it is possible to reliably reduce defective products.

According to a second aspect of the present invention, there is provided a correction resistor attachment assisting system for assisting in attaching a plurality of types of correction resistors for correcting individual differences in sensor characteristics to a connector shell of a connector for connecting to the sensor. A sensor measuring jig for electrically and mechanically connecting a plurality of connectors to a predetermined position, a characteristic measuring device for simultaneously measuring the characteristics of a plurality of sensors mounted on the sensor measuring jig, and the characteristic measuring device. Calculation means for calculating the resistance value of the correction resistance necessary for correction of each sensor based on the measured characteristic value, and correction resistance for electrically connecting the correction resistance corresponding to the resistance value calculated by the calculation means A measuring jig, a resistance measuring device attached to the correction resistance measuring jig for measuring the resistance value of the correction resistance, a resistance value calculated by the calculating means, and the correction resistance measuring device. First checking means for checking whether or not the resistance value of the correction resistor connected to the jig matches, and whether or not the correct connector has been pulled out when the corresponding sensor connector is removed from the sensor measuring jig. Second confirming means for confirming whether or not the correction resistor and the connector shell are attached when the connector shell is attached, and third confirming means for confirming the attachment state of the correction resistor and the connector shell to the resistance value calculated by the calculating means. Fourth electrically confirming means for confirming the connection state of the correction resistance measuring jig and the correction resistance until the correction resistance and the connector shell are mounted after electrically connecting the corresponding correction resistance. It is characterized by including.

By providing such a device and means, the above method can be implemented, erroneous selection and erroneous mounting can be reliably avoided, and defective products can be reliably reduced.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A connector shell (6 in FIG. 3) of a connector for connecting a plurality of types of correction resistors (80 in FIG. 3) for correcting individual differences in characteristics of a sensor (60 in FIG. 2) to the sensor.
4b) in the correction resistor mounting method, the characteristic of the sensor is measured (step A2 in FIG. 7), and the first step of calculating the resistance value of the correction resistor necessary for the correction of the sensor based on the characteristic. And (step A3 in FIG. 7),
The second step of selecting the correction resistor corresponding to the resistance value calculated in the first step and measuring the resistance value of the correction resistor (step A4 in FIG. 7), and the first step. The third step of confirming whether or not the resistance value calculated as described above matches the resistance value of the correction resistor (step A in FIG. 7).
5), if it is confirmed that the resistance value calculated in the first step and the resistance value of the correction resistor match, the correction resistor and the characteristic measured in the first step By including the fourth step of attaching the connector shell of the connector of the sensor and (Steps A7 and A8 in FIG. 7), confirmation (monitoring) in the process portion that may cause misselection or misattachment of the correction resistor can be performed. Since this is done reliably, the number of defective products (NG products) due to process (work) mistakes is drastically reduced.

[0021]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of a correction resistor attachment auxiliary system according to an embodiment of the present invention. Figure 2
FIG. 3 is a schematic diagram showing a configuration of a gas sensor used in the correction resistance mounting auxiliary system according to the embodiment of the present invention. FIG. 3 is an exploded perspective view schematically showing the configuration of the connector portion of the gas sensor. FIG. 4 is an external perspective view schematically showing the configuration of a sensor measuring jig used in the correction resistor mounting auxiliary system according to the embodiment of the present invention.
FIG. 5 is a cross-sectional view (between XX ′) schematically showing a state in which the gas sensor is attached to the sensor measurement jig. Figure 6
FIG. 3 is an external perspective view schematically showing the configuration of a correction resistance measuring jig used in the correction resistance mounting auxiliary system according to the embodiment of the present invention.

Referring to FIG. 1, the correction resistance mounting auxiliary system 1 measures the characteristics (individual difference) of the sensor and calculates the resistance value necessary for correction based on the measured characteristic value.
This is a system for assisting the correction resistance corresponding to the calculated resistance value to be accurately attached to the measured sensor, and includes a sensor measurement jig 10 and a correction resistance measurement jig 20.
And a characteristic measuring device 30, a resistance measuring device 40, and a computer 50.

Referring to FIG. 2, the sensor 60 measured in the correction resistance mounting auxiliary system 1 is a gas sensor for measuring the specific gas component concentration (NOx) in the exhaust gas in the internal combustion engine, and the exhaust gas pipe to be actually mounted is It is attached with a screw 65 or the like in a state in which the detection unit 61 is faced in the measurement chamber (see 12a in FIG. 5) in the sensor attachment portion of the assumed sensor measurement jig. This sensor 60
A heater 62 is provided for heating the detection unit 61 to realize a detection temperature within a certain range. In addition, the sensor 60
Has a coated lead body 63 that is electrically connected to the detection unit 61 and the heater 62, and a male connector 64 is attached to the tip of the coated lead body 63. Gas sensor (N
The detailed configuration of the Ox) detector is disclosed in JP-A-11-2.
See Japanese Patent No. 81617. The sensor applicable to the present invention is not limited to the gas sensor,
Any known sensor may be used.

Referring to FIG. 3, the male connector 64 is
A plurality of male terminals 6 detachably corresponding to the female connector of the sensor measuring jig (see 11a in FIG. 4) or the female connector of the correction resistance measuring jig (see 21 in FIG. 6).
4a and retainer 70 in connector shell 64b.
Has a retainer fitting portion for fitting with the retainer 70
It can be attached / detached to / from the female connector (see 21 in FIG. 6) of the correction resistance measuring jig in a state where it is still fitted with the correction resistance 80. Each male terminal 64a is inserted through the corresponding retainer hole 70a.

Referring to FIG. 3, the retainer 70 is an auxiliary member for mounting the correction resistor 80 on the male connector 64 of the sensor 60, and is fitted to a retainer fitting portion (not shown) of the male connector 64. Has a hole (not shown) for inserting the male terminal 64a of the male connector 64, and has a hole 80a for inserting the male terminal 64a of the male connector 64 so that the terminal 80b of the correction resistor faces the same direction as the terminal 64a of the male connector 64. Correction resistor terminal hole 70 for inserting the terminal 80b of the correction resistor
b.

Referring to FIG. 3, the correction resistor 80 is a resistor for correcting the characteristic of the sensor 60, and the resistance portion 80.
It has a and the terminal part 80b. The resistor portion 80a is covered with a resistor having a predetermined resistance value and is incorporated therein. The surface of the resistor portion 80a is provided with an indication (color or number) so that the resistance value can be identified. The terminal 80b is a male terminal extending from the resistance portion 80a, and is formed in a shape that can be inserted into the correction resistance terminal hole 70b of the retainer in a certain direction (the same direction as the terminal 64a of the male connector 64). , Is electrically connected to the resistance in the resistance portion 80a, and is detachably inserted into the female terminal of the female connector (11a in FIG. 4, 21 in FIG. 6). The method of fitting the retainer 70 and the correction resistor 80 is as shown in FIG.
It is not limited to the one fitted from the resistance part side, and may be fitted from the opposite side.

Referring to FIGS. 1, 4 and 5, the sensor measuring jig 10 is a reference jig for simultaneously measuring individual characteristic values of the plurality of sensors 60, and the female connector portion 1
1 and a sensor mounting portion 12.

The female connector section 11 is provided with a plurality of female connectors 11a (see FIG. 3) of the gas sensor and a plurality of female connectors 11a which can be attached and detached electrically and mechanically (in one embodiment, ten sensor measuring jigs). It is the part that A predetermined terminal of each female connector 11a is electrically connected to the characteristic measuring device 30 or the resistance measuring device 40 via wiring.

The sensor mounting portion 12 is a place (stand) for measuring the sensor 60, and faces the detection portion 61 of the gas sensor and has a constant atmosphere (air, nitrogen, carbon dioxide, water, oxygen, monoxide). A measurement chamber 12a for producing (a mixed gas of nitrogen, etc.) is provided, and an attachment port 12b for detachably attaching the sensor 60 is provided on the measurement chamber 12a (see FIG. 5).

Referring to FIGS. 1 and 6, the correction resistance measuring jig 20 includes a female connector 21, an occupant sensor 22, and
Have.

The female connector 21 is used for the sensor measuring jig 10.
It is a connector of the same type as the female connector 11a of FIG.
(Refer to FIG. 3), the male connector 64 of the gas sensor or the correction resistor 80 mounted on the retainer 70 can be detached electromechanically (see FIG. 3). The connector shell of the female connector 21 is provided with a hole (through hole; not shown) for monitoring whether or not the connector shell of the male connector 64 of the gas sensor is completely inserted into the female connector 21 to the correct position. ing. The terminals of the female connector 21 are electrically connected to the resistance measuring device 40 via wiring.

The seating sensor 22 is a sensor for monitoring whether or not the male connector 64 of the gas sensor is completely inserted into the female connector 21 up to the correct position, and is electrically connected to the computer 50. The seat sensor 22 is a photoelectric sensor, and is monitored through a hole provided in the housing of the female connector 21. This is because unless the male connector 64 of the gas sensor is properly (until the last) inserted into the female connector 21, the retainer 70 with the correction resistor 80 attached to the female connector 21 does not fit with the male connector 64 (the retainer 70). Since the retainer 70 may remain on the female connector 21 when the male connector 64 is pulled out from the female connector 21, the seat sensor 22 is provided to prevent this.

The characteristic measuring device 30 comprises the sensor measuring jig 10
It is a device for simultaneously measuring individual characteristics of a plurality of sensors 60 attached to the. The characteristic measuring device 30 includes the female connector portion 11 of the sensor measuring jig and the computer 5.
The electrical characteristics of the sensor 60 are measured via the male connector 64 attached to the female connector section 11 of the sensor measuring jig, and the information related to the measured value is transmitted to the computer 50.

The resistance measuring device 40 comprises a correction resistance measuring jig 2
0 is a device for measuring the resistance value of the correction resistor 80 attached to the sensor 0 or the resistance value of the sensor 60 (via the male connector 64 attached to the female connector portion 11). Measuring jig 20
Is electrically connected to a predetermined terminal of the female connector 21 through a wiring. The resistance measuring device 40 includes a switch unit 41,
And a measuring unit 42.

Under the control of the computer 50, the switch section 41 receives the female connector 11a of the sensor measuring jig 10.
Alternatively, it is a portion that switches the electrical connection state between the female connector 21 of the correction resistance measuring jig 20 and the measuring unit 42.

The measuring section 42 includes a male connector 6 on the female connector 11a of the sensor measuring jig 10 in an electrically connected state.
4 is electrically connected to the female connector 21 of the resistance value of the sensor 60 or the correction resistance measuring jig 20 which is electrically connected via 4. The measuring unit 42 measures the resistance value of each of the correction resistors 80, and transmits information related to the measured resistance value to the computer.

The computer 50 has a display section 51, a control section 52, a storage section 53, a calculation section 54, and a confirmation section 55.

The display unit 51 displays the number of the measured sensor 60 (the position number of the female connector 11a in the sensor measuring jig 10), the calculated correction resistance value corresponding thereto, and the mounting of the correction resistance corresponding to the correction resistance value. The predetermined information such as the position is displayed.

The control unit 52, based on the program stored in the storage unit 53, the female connector 11a of the sensor measuring jig 10 or the female connector 21 of the correction resistance measuring jig 20 and the measuring unit 42 of the resistance measuring device 40. And control switching of electrical connection state.

The storage unit 53 stores a program controlled by the control unit 52, a program executed by the calculation unit 54, and the like.

The calculating unit 54 calculates a correction resistance value corresponding to the information relating to the characteristic value (individual difference) of the sensor 60 transmitted from the characteristic measuring device 30, based on the program stored in the storage unit 53.

The confirmation unit 55 transmits the correction resistance 80 (transmitted from the measurement unit 42 of the resistance measuring device 40) attached to the female connector 21 of the correction resistance measuring jig 20 based on the information on the calculated correction resistance value. Check whether the resistance value of the correction resistor and the insertion position are proper, and if it is proper, inform the display unit 52 that it is proper, and if not, display unit 52 or speaker (not shown). Notify that it is not appropriate. Further, the confirmation unit 55 checks whether the retainer 70 with the correction resistor 80 is attached to the female connector 21 of the correction resistance measuring jig 20 until the correction resistor is attached to the corresponding male connector 64 of the gas sensor. It monitors via the resistance measuring device 40. Further, when the male connector 64 is pulled out from the female connector 11a for mounting the correction resistor 80, the confirmation unit 55 determines whether the correction resistor 80 corresponds to the already inserted correction resistor 80 through the resistance measuring device 40. To monitor. Further, the confirmation unit 55 is the male connector 6
When the male connector 64 is properly fitted to the retainer 70 (including the correction resistor 80) when the 4 is fitted to the retainer 70 with the correction resistor 80, the presence sensor 22 of the correction resistance measuring jig 20 is checked. To monitor through. As a result of the above-mentioned monitoring, the confirmation unit 55 informs the operator of the improper procedure through the display unit 52 or the speaker (not shown) when the operation is performed in an improper procedure.

Next, the operation of the embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a flow chart schematically showing the steps of the correction resistance attaching method according to the embodiment of the present invention. FIG. 8 is a schematic diagram showing the steps of the method for mounting the correction resistor according to the embodiment of the present invention. FIG. 9 is a schematic diagram showing a wiring state with a correction resistor in the correction resistor attachment auxiliary system according to the embodiment of the present invention. For the configuration of the correction resistance attachment assist system, refer to FIGS.

First, a plurality of sensors 60 are set on the sensor mounting portion 12 of the sensor measuring jig 10, and the male connector 64 of the sensor is inserted into the female connector 11a of the sensor measuring jig 10 (electromechanical connection) ( Step A1).

Next, the characteristics (heater resistance, insulation resistance, O ₂ output, NOx output, etc. in the case of a NOx sensor) of each sensor 60 set in the sensor mounting portion 12 are measured by the characteristic measuring device 30 or the resistance measuring device 40. Is measured for each predetermined atmosphere (air, nitrogen / carbon dioxide / water / oxygen / nitrogen monoxide mixed gas, etc.) (step A2). In addition,
For the measurement conditions of the NOx sensor, see JP-A-11-28.
See 1617.

Next, based on the characteristic value (individual difference) of each sensor 60 obtained by the above measurement, a correction resistance value suitable for each mounting position of the correction resistance of each sensor 60 is calculated, and the calculated value is calculated. Is displayed on the screen of the computer 50 for each mounting position of the correction resistor of each sensor 60 (step A3). Here, the characteristic value (individual difference) of each sensor 60 measured by the characteristic measuring device 30 or the resistance measuring device 40 is transmitted to the computer 50, and the computer 50 acquires the characteristic value of each sensor 60, so that the computer 50 Calculates the correction resistance value for each mounting position of the correction resistance of each sensor 60, and displays the calculated correction resistance value on the screen in association with the mounting position of the sensor (number). For example, "No. 1 sensor R1 = ○○. ○ kΩ R2 = ○○. ○ kΩ R3 = ○
◯. ◯ kΩ ”(R1, R2, and R3 are the mounting positions of the correction resistors). The correction resistance values may be different from each other, or may be all or part of the same. Regarding the method of calculating the correction resistance value of the NOx sensor,
See Japanese Patent Application Laid-Open No. 11-281617.

Next, a correction resistor 80 corresponding to the mounting position of the sensor (number) is selected, and each correction resistor 80 is inserted into the corresponding mounting position of the retainer 70 (see FIG. 8B).
The retainer 70 with the correction resistor 80 inserted therein is inserted into the female connector 21 of the correction resistance measuring jig 20 (see FIG. 8C; step A4).

Next, it is confirmed whether or not the resistance value and the mounting position of the correction resistor 80 are correct (step A5). This confirmation is performed by measuring the resistance value of each correction resistor 80 (while switching) using the resistance measuring device 40 (see FIG. 9),
This is performed by determining whether or not each resistance value measured here matches each corresponding correction resistance value calculated by the computer 50. If there is an error, computer 5
An alarm is issued from 0, and the process returns to step A4.

If the resistance value of the correction resistor and the mounting position are correct, the sensor No. for inserting the correction resistor is displayed on the screen of the computer 50, and the retainer (with the correction resistor) continues to display the correction resistance measuring jig 20. The presence of the female connector 21 is monitored by the resistance measuring device 40, and the process proceeds to the next step (step A6). If the retainer (with correction resistor) is mistakenly removed from the correction resistance measuring jig 20, a warning is issued from the computer 50, and if it is returned to the original state, the warning stops.

Next, the male connector 64 of the sensor corresponding to the displayed sensor number is removed from the female connector 11a of the sensor measuring jig to determine whether the male connector 64 of the sensor is correctly removed from the sensor measuring jig 10. Is confirmed (step A7). Here, since the resistance of the sensor 60 is checked using the resistance measuring device 40, there is no erroneous removal of the male connector 64. When the wrong male connector 64 is removed, a warning is issued from the computer 50, and the warning is stopped by attaching the removed male connector 64 to the original female connector 11a. In addition,
Also in this step, the resistance measuring device 40 monitors that the retainer (with the correction resistor) is continuously present in the female connector 21 of the correction resistance measuring jig 20.

Next, when the correct male connector 64 is removed, the retainer 70 corresponding to this male connector 64 is removed.
The retainer 70 is inserted into the female connector 21 of the correction resistance measuring jig 20 (with the correction resistor 80) inserted (see FIG. 8D), and the male connector 64 becomes the female connector 21. It is confirmed whether or not it has been correctly inserted in (step A8). Here, the male connector 64
It is discriminated by the enrollment sensor detecting whether or not is correctly inserted into the female connector 21. If the retainer 70 with the correction resistor 80 is not fitted with the male connector 64, the male connector 64 is inserted into the female connector 21 again.

If inserted correctly, the computer 5
“OK” is displayed on the screen of 0, and by removing the male connector 64 from the female connector 21, the retainer 70 (with the correction resistor 80) is also removed, and a sensor with a correction resistor is formed (see FIG. 8E). .

[0053]

According to the present invention, the correction resistor selected according to the characteristics of the sensor can be attached to the connector shell without erroneous insertion.

Further, even when a plurality of correction resistors are attached to the connector shell, the correction resistors can be attached without error in the resistance value and attachment position.

Furthermore, even when a plurality of sensors are measured at the same time, the correction resistor corresponding to one sensor can be properly attached without attaching to another sensor.

Furthermore, since confirmation (monitoring) is surely performed in the process portion that may cause incorrect selection or incorrect mounting of the correction resistor, a defective product (NG product) due to a process (work) error.
Can be drastically reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a correction resistance attachment support system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of a gas sensor used in the correction resistor attachment auxiliary system according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view schematically showing a configuration of a connector portion of the gas sensor.

FIG. 4 is an external perspective view schematically showing the configuration of a sensor measurement jig used in the correction resistance attachment auxiliary system according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view (between XX ′) schematically showing a state in which the gas sensor is attached to the sensor measurement jig.

FIG. 6 is an external perspective view schematically showing the configuration of a correction resistance measuring jig used in the correction resistance mounting auxiliary system according to the embodiment of the present invention.

FIG. 7 is a flow chart schematically showing steps of a correction resistance attaching method according to an embodiment of the present invention.

FIG. 8 is a schematic view showing steps of a correction resistance attaching method according to an embodiment of the present invention.

FIG. 9 is a schematic diagram showing a wiring state with a correction resistor in the correction resistor attachment auxiliary system according to the embodiment of the present invention.

[Explanation of symbols]

10 Sensor measurement jig 11 Female connector 12 Sensor mounting part 20 Correction resistance measuring jig 21 female connector 22 Occupancy sensor 30 Characteristic measuring device 40 Resistance measuring device 41 Switch 42 Measuring section 50 computers 51 display 52 control unit 53 storage 54 Calculation Unit 55 Confirmation Department 60 sensor 61 Detector 62 heater 63 Coated lead body 64 male connector 65 screws 70 retainer 80 Correction resistor

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) H01R 24/00 G01N 27/58 B (72) Inventor Masashi Tanabe 14-18 Takatsuji-cho, Mizuho-ku, Nagoya In-house (72) Inventor Shinichiro Iwama 14-18 Takatsuji-cho, Mizuho-ku, Nagoya F-Term (reference) 2F075 EE08 2G004 BF11 BG05 BH01 BJ03 BL08 BL19 BM04 BM10 5E023 AA04 AA30 BB02 BB30 DD07 H22 HH26

Claims (7)

[Claims] 1. A correction resistor mounting method for mounting a plurality of types of correction resistors for correcting individual differences in characteristics of a sensor on a connector shell of a connector connected to the sensor, wherein the characteristics of the sensor are measured, and based on the characteristics. A first step of calculating a resistance value of the correction resistor necessary for correcting the sensor, and a selection of the correction resistance corresponding to the resistance value calculated in the first step, and a resistance value of the correction resistance. A second step of measuring, a third step of confirming whether or not the resistance value calculated in the first step and the resistance value of the correction resistor match, and the first step. When it is confirmed that the resistance value calculated in step 1 and the resistance value of the correction resistor match, the correction resistor and the connector shell of the connector of the sensor whose characteristics are measured in the first step are A fourth step of attaching,
A method for mounting a correction resistor, which includes: 2. The sensor has a plurality of characteristics, and the correction resistors corresponding to each of the characteristics one-to-one are attached to a connector shell of the connector, and the connector shell has a pair of characteristics. Comprising a correction resistor mounting portion corresponding to one, the first step, measuring a plurality of characteristics of the sensor,
The resistance value of the correction resistor necessary for the correction of the sensor is individually calculated based on each characteristic, and the third step includes the resistance value calculated in the first step and a plurality of the correction resistors. And confirming that the resistance value calculated in the first step and the resistance values of the plurality of correction resistors match each other in the fourth step. The correction resistor mounting method according to claim 1, wherein the correction resistor is mounted on the corresponding correction resistor mounting portion when the correction resistor is mounted. 3. The sensor is attached to a sensor measurement jig to perform the first step, and the correction resistor is attached to a correction resistance measurement jig to perform the second step.
Of the sensor attached to the sensor measurement jig and the correction resistor attached to the correction resistance measurement jig in the fourth step through the third step. 3. The correction resistor mounting method according to claim 1, wherein one of the correction resistors is mounted and the other is mounted as it is. 4. The sensor measuring jig electrically and mechanically connects connectors of a plurality of the sensors at predetermined positions,
In the first step, the characteristics of a plurality of sensors are measured at the same time. In the fourth step, when the corresponding connector of the sensor is removed from the sensor measuring jig, is the correct connector removed? The method for mounting a correction resistor according to claim 3, wherein it is confirmed whether or not the correction resistor is attached. 5. The correction resistance measuring jig is electrically connected to a correction resistance corresponding to the resistance value calculated in the first step, and then the correction resistance and the connector of the sensor in the fourth step are connected. 5. The method for mounting a correction resistor according to claim 3, wherein the connection state between the correction resistance measuring jig and the correction resistor is confirmed until the correction resistor is attached to the shell. 6. The correction according to claim 1, wherein the mounting state is confirmed when the correction resistor and the connector shell of the sensor are mounted in the fourth step. Resistor mounting method. 7. A compensation resistor mounting auxiliary system for assisting in mounting a plurality of types of compensation resistors for compensating individual differences in characteristics of a sensor on a connector shell of a connector for connecting to the sensor, wherein a plurality of connectors are provided at predetermined positions. A sensor measuring jig for electrically and mechanically connecting the sensor measuring device, a characteristic measuring device for simultaneously measuring the characteristics of a plurality of sensors mounted on the sensor measuring jig, and a characteristic value measured by the characteristic measuring device. Calculating means for calculating the resistance value of the correction resistance necessary for the correction of each sensor, a correction resistance measuring jig electrically connecting the correction resistance corresponding to the resistance value calculated by the calculating means, and the correction means. A resistance measuring device attached to the resistance measuring jig for measuring the resistance value of the correction resistor, a resistance value calculated by the calculating means and a correction resistance connected to the correction resistance measuring jig. The first confirmation means for confirming whether or not the resistance value of the sensor matches with the resistance value of the second sensor, and the second confirmation for confirming whether or not the correct connector is pulled out when the connector of the corresponding sensor is removed from the sensor measuring jig. Means, a third confirmation means for confirming the mounting state when the correction resistor and the connector shell are attached, and a correction resistance corresponding to the resistance value calculated by the calculation means is electrically connected to the correction resistance measuring jig. After the connection, the correction resistance is provided with a fourth checking means for checking the connection state of the correction resistance measuring jig and the correction resistance until the correction resistance and the connector shell are attached. Resistance mounting auxiliary system.