JP6223008B2 - measuring device - Google Patents

Description

  The present invention relates to a measuring apparatus configured to be able to execute a process for determining whether or not a measurement value is a value within a measurement value range for determination.

  As this type of measurement device, the applicant can perform measurement processing in the comparative measurement mode and deviation measurement mode in addition to the normal measurement mode in which a predetermined measurement process is executed and the measurement value is output. An apparatus is disclosed in JP-A-6-147932. In this case, in the comparative measurement mode, the preset upper limit value and lower limit value are compared with the measured value, and when the measured value is below the lower limit value, the character string “Lo” is displayed and the measured value is A character string “Hi” is displayed when the upper limit value is exceeded, and a character string “GO” is displayed when the measured value is greater than or equal to the lower limit value and less than or equal to the upper limit value. In the deviation measurement mode, the deviation between the reference value and the measurement value specified in advance is calculated, and the calculation result is displayed as a numerical value indicating the count difference (deviation value) or percentage (ratio of the deviation value to the reference value). Is done.

  In using this measuring apparatus, first, a lower limit value and an upper limit value are set. In this case, in the measurement device disclosed by the applicant, when different values are set as the lower limit value and the upper limit value, the CPU determines that the execution of the measurement process in the comparative measurement mode is instructed, The set lower limit value and upper limit value are compared with the measured value, and the comparison result is displayed as described above. Further, in the measuring device disclosed by the applicant, when the same value is set as the lower limit value and the upper limit value, the CPU determines that the execution of the measurement process in the deviation measurement mode is instructed and is set. The deviation from the measured value is calculated using the lower limit value (or upper limit value) as a reference value, and the numerical value indicating the count difference or percentage is displayed as described above. Thereby, a desired measurement result is acquired.

JP-A-6-147932 (page 2-3, FIG. 1-2)

  However, the measurement apparatus disclosed by the applicant has the following problems to be improved. That is, in the measurement device disclosed by the applicant, by setting arbitrary values as the lower limit value and the upper limit value, respectively, without performing the measurement mode switching operation, the comparison measurement mode according to the set value, or A configuration is employed in which measurement processing in the deviation measurement mode is executed. On the other hand, as one of the usage forms of this type of measuring device, for example, in a production line of electronic equipment or the like, resistance values or the like are measured for a plurality of products, respectively, or resistance is measured for a plurality of inspection points in one product. For example, each value may be measured to determine whether each measured value is within the determination measurement value range. Therefore, the applicant has developed a measurement apparatus that can execute the measurement process in the comparative measurement mode or the deviation measurement mode for each measurement channel according to the set value for each measurement channel (see FIG. Not shown).

  In this case, in the multi-channel measuring device developed by the applicant, for example, a resistance value or the like is measured in a comparative measurement mode for a plurality of products, and whether or not each measured value is within a measurement value range for determination. Is determined, an arbitrary lower limit value and upper limit value (values different from each other) are set for each measurement channel. Thus, any one of the character strings “Lo”, “Hi”, and “GO” is determined for each measurement channel without performing an operation for instructing measurement in the comparative measurement mode for each measurement channel. Displayed as a result. Further, in the multi-channel measuring device developed by the applicant, for example, when measuring a resistance value or the like in a deviation measurement mode for a plurality of products, an arbitrary lower limit value and upper limit value (equal to each other) are measured for each measurement channel. Value). Thus, the count difference or percentage is calculated and displayed for each measurement channel without performing an operation for instructing measurement in the deviation measurement mode for each measurement channel.

  In this way, with the multi-channel measurement device developed by the applicant, the measurement process is executed in any measurement mode for each measurement channel by simply performing the operation for setting the upper and lower limits for each measurement channel. Therefore, the operation for setting the measurement process to be executed in the comparison measurement mode or the deviation measurement mode does not have to be performed separately from the operation for setting the upper limit value and the lower limit value. The burden on the user is reduced by that amount. However, in the multi-channel measurement device disclosed by the applicant, an operation for setting an upper limit value and a lower limit value (an operation for setting a value for determination processing) must be performed for each measurement channel. When there are a large number of channels, this setting operation is complicated. Therefore, it is preferable to improve this point.

  The present invention has been made in view of such a problem to be improved, and a main object of the present invention is to provide a measurement apparatus that can sufficiently reduce the burden required for setting a measurement value range for determination.

In order to achieve the above object, a measuring apparatus according to claim 1 is a measurement unit that measures an electrical parameter of a measurement object and outputs a measurement value; and a measurement value within a determination measurement value range in which the measurement value is defined in advance. A measurement unit including a processing unit that executes a determination process for determining whether or not the value is a value, wherein the measurement unit includes a plurality of measurement channels and the electric power defined in advance for each measurement channel. The measurement unit is configured to be capable of measuring a measurement parameter, and the processing unit includes the at least one measurement channel in the determination process for the measurement value measured in at least one of the measurement channels. measurement is designated in advance as the reference value measurement range, and the measurement value to any upper limit and the lower limit of the measurement value of the measurement channel specified different pre A process of defining one of the values range as the judgment measurements range, said at least one measurement channel different pre specified one of said preset operation formula using the measured values of the measuring channel and A process for defining, as the measurement value range for determination, any one of a measurement value range in which the calculation result of the calculation process is one of an upper limit value and a lower limit value, and a pre-specified measurement value range having the calculation result as a reference value; A measurement value obtained by calculating a calculation result of a predetermined calculation formula using the measurement values of a plurality of measurement channels specified in advance different from the at least one measurement channel, as either an upper limit value or a lower limit value Any one of a range and a measurement value range designated in advance using the calculation result as a reference value is defined as the measurement value range for determination. It has been configured to be able to execute and management.

  According to the measurement apparatus of the first aspect, the processing unit is designated in advance different from one measurement channel in the determination process for the measurement value measured in at least one measurement channel among the measurement channels. Whether a measurement value range specified in advance with a measurement value of a measured channel as a reference value is defined as a measurement value range for determination, and the measurement value of the at least one measurement channel is a value within the measurement value range for determination By determining whether or not any of the measurement value ranges for determination for determination processing is performed without performing complicated setting work for inputting the lower limit value, the upper limit value, and the reference value for each measurement channel. According to the measurement value of the measurement channel, the lower limit value, the upper limit value and the reference value of other measurement channels can be easily defined. Thereby, the burden required for setting the measurement value range for determination can be sufficiently reduced.

Further , in the determination process , the processing unit executes a calculation process of a predetermined calculation formula to determine any one of the upper limit value , the lower limit value, and the reference value of the measurement value range designated in advance as the measurement value range for determination. By prescribing, for a measurement channel where a measurement value having a correlation with a measurement value of another measurement channel is to be measured, an arithmetic expression indicating the correlation is registered in advance, so that the predetermined measurement channel The measurement value range for judgment is automatically defined with the value calculated from the measurement value as the lower limit value , upper limit value, and reference value , so even if you are unfamiliar with this type of equipment, the measurement value for judgment The determination process can be executed reliably and easily without erroneously setting the range.

1 is a configuration diagram showing a configuration of a resistance measuring device 1. FIG. 4 is a display screen diagram illustrating an example of a determination condition setting screen 10. FIG. 6 is a display screen diagram illustrating another example of the determination condition setting screen 10. FIG. FIG. 10 is a display screen diagram illustrating still another example of the determination condition setting screen 10. It is a display screen figure which shows an example of the determination condition setting screen 10a.

  Hereinafter, embodiments of a measuring apparatus according to the present invention will be described with reference to the accompanying drawings.

  The resistance measuring device 1 shown in FIG. 1 is an example of a “measuring device”, and includes a connection switching unit 2, a measuring unit 3, an operation unit 4, a display unit 5, a processing unit 6, and a storage unit 7.

  The connection switching unit 2 is a so-called “multiplexer (scanner)” and constitutes a “measurement unit” together with the measurement unit 3 and the processing unit 6. This connection / disconnection switching unit 2 connects specified four of the plurality of signal cables 2a, 2a,... Connected to the measurement object to the measurement unit 3 according to the control of the measurement unit 3 (by the four-terminal method). Processing for switching connection / disconnection between the signal cables 2a, 2a,... The measurement unit 3 controls the connection / disconnection switching unit 2 to control the connection / disconnection of each signal cable 2 a according to the control of the processing unit 6, and the four signal cables 2 a (currents) connected by the connection / disconnection switching unit 2. Measured value data indicating measured values by measuring a resistance value (an example of an “electrical parameter”) to be measured via the two signal cables 2a for supply and the two signal cables 2a for voltage measurement) D1 (an example of “measurement value”) is generated and output.

  In this case, in the resistance measuring apparatus 1 of this example, as an example, 42 types of combinations of the four signal cables 2a sequentially connected to the measuring unit 3 by the connection / disconnection switching unit 2 are prepared. Each combination corresponds to a “measurement channel” (an example of a configuration where “measurement channel” is 42 channels). Further, in the resistance measuring apparatus 1 of the present example, “STEP01” to “STEP42” are related to each “measurement channel (combination of four signal cables 2a)” according to the switching order by the connection switching unit 2. As shown, STEP numbers are assigned. Therefore, in the present specification, the “measurement channel” is hereinafter also referred to as “STEP”.

  The operation unit 4 includes various operation switches for setting operation conditions (measurement conditions) and the like, and instructing start / stop of processing, and outputs an operation signal corresponding to the switch operation to the processing unit 6. The display unit 5 displays a measurement condition setting screen for setting measurement conditions for each STEP, a measurement result display screen showing measurement results, and the like (not shown) under the control of the processing unit 6. In addition, although the description will be given by taking as an example a configuration that integrally includes a display unit that displays various display screens, a configuration that displays various display screens on a “display device (display unit)” as an external device. It can also be adopted.

  The processing unit 6 controls the resistance measuring apparatus 1 as a whole. Specifically, the processing unit 6 displays the above-described measurement condition setting screen on the display unit 5, sets the measurement condition for each STEP, generates the measurement procedure data D0 according to the set condition, and stores the storage unit 7 Remember me. In this case, in the resistance measuring apparatus 1 of this example, not only a normal measurement process (a process of measuring the resistance value and acquiring the measured value data D1) but also the determination measurement in which the value of the measured value data D1 is defined in advance. A determination process (comparator process) for determining whether the value is within the value range can be arbitrarily executed for each STEP. Therefore, when there is a STEP designated to execute the determination process on the measurement condition setting screen, the processing unit 6 displays the determination condition setting screens 10, 10 a and the like to display the “measurement value range for determination”. The measurement procedure data D0 is generated according to the set conditions and stored in the storage unit 7.

  Further, the processing unit 6 controls the measurement unit 3 according to the measurement procedure data D0 stored in the storage unit 7 to sequentially measure the resistance value for each STEP, and the measurement value data D1 output from the measurement unit 3 is obtained. The information is stored in the storage unit 7 in association with the STEP number. For the STEP set to execute the above determination process, the processing unit 6 sets the value of the measurement value data D1 to “for determination” based on the measurement value data D1 and the measurement procedure data D0 of the STEP. It is determined whether or not the value is within the “measurement value range”, and the determination result is stored in the storage unit 7 as determination result data D2.

  The setting of the determination condition and the specific content of the determination process will be described in detail later with a specific example. However, in the resistance measuring apparatus 1 of this example, the measured value (measurement) measured in the target STEP is measured. A process of determining whether or not the value of the value data D1 is a value within a “measurement value range” between a “lower limit value” and an “upper limit value” set in advance (hereinafter also referred to as “process A”). Then, the measured value (value of measured value data D1) measured in the target STEP is a previously defined “range value (“ ± ○% ”” value: [reference value]. ] As a reference, a parameter that defines [measurement value range]) ”is determined as a value within the“ measurement value range ”(hereinafter also referred to as“ processing B ”). It can be executed as a “process”. The storage unit 7 stores the measurement procedure data D0, the measurement value data D1, the determination result data D2, and the like.

  In the measurement process by the resistance measuring apparatus 1, first, measurement conditions for each STEP are set. In this case, in the resistance measurement device 1 of this example, when executing the “determination process” in any STEP, the “upper limit value” and the “lower limit value” are performed in the same manner as the conventional multi-channel measurement device developed by the applicant. In addition to the usage method of directly specifying numerical values such as “reference value” and defining “measurement value range for judgment”, the measured value of STEP different from the target STEP is set to “lower limit value” and “upper limit value”. ”Or“ reference value ”, and a method of use that defines a“ measurement value range ”as a“ determination measurement value range ”can be selected.

  Specifically, as an example, when “Process B” is executed as “determination process” for the measured value data D1 of STEP 02, in a state where STEP 02 is selected on the measurement condition setting screen (not shown), FIG. As shown in FIG. 5, the determination condition setting screen 10 is displayed on the display unit 5. In this case, the determination condition setting screen 10 includes a target STEP display 11 indicating the STEP number to be set, a measurement range display 12 indicating the measurement range used during the measurement processing of the STEP displayed on the target STEP display 11, and the target STEP. The measurement value range display 13 for determination indicating the “measurement value range for determination” of STEP displayed on the display 11 is configured.

  The determination measurement value range display 13 includes a lower limit value / reference value display portion 13a and an upper limit value / range value display portion 13b. In this case, the lower limit value / reference value display unit 13a has a set value defined as the “lower limit value” of the “measurement value range for determination” when the above “process A” is executed as the “determination process”. When “Process B” is executed as the “determination process”, a set value specified as the “reference value” of the “measurement value range for determination” is displayed. The upper limit value / range value display unit 13b displays a set value specified as the “upper limit value” of the “determination measurement value range” when the above “process A” is executed as the “determination process”. Then, when executing the above-mentioned “Process B” as the “determination process”, a set value specified as “range value” of the “measurement value range for determination” is displayed.

  Here, as an example, when setting “100 mΩ ± 10.0% measurement value range” as “determination measurement value range” in STEP 02, the operation unit 4 is operated, as shown in FIG. A “reference value” of “100 mΩ” is input to the lower limit value / reference value display portion 13a, and a “range value” of “10.0%” is input to the upper limit value / range value display portion 13b. Thereby, the setting of the condition for “determination process” for STEP02 is completed.

  Further, instead of the above conditions, for example, “a measurement value range of ± 10.0% using the value of the measurement procedure data D0 measured in STEP01 as a reference value” is changed to “measurement value range for determination” in STEP02. , The operation unit 4 is operated, and as shown in FIG. 3, the “set value” of “STEP01” is input as the “reference value” to the lower limit / reference value display unit 13a, and “Range value” of “10.0%” is input to the upper limit value / range value display portion 13b. Thereby, the setting of the condition for “determination process” for STEP02 is completed.

  In this case, in the resistance measuring device 1 of this example, as described above, the STEP number of each STEP is changed according to the switching order of the signal cables 2a by the connection / disconnection switching unit 2, that is, the execution order of the measurement processing by the measuring unit 3. Is stipulated. For this reason, the STEP input to the lower limit / reference value display unit 13a when setting the “determination measurement value range” for “processing B” as the “determination process” is performed before the setting target STEP. The STEP to be executed, that is, the STEP having a smaller STEP number than the STEP number displayed in the target STEP display 11 is required. Therefore, in the resistance measuring apparatus 1 of this example, when a set value is input to the lower limit / reference value display unit 13a, only the STEP having a STEP number smaller than the STEP to be set is displayed as the selection candidate on the target STEP display 11. A configuration is employed (not shown).

  On the other hand, as an example, “a measurement value range of ± 15.0% with a value obtained by multiplying the value of measurement procedure data D0 measured in STEP01 by“ 0.9 ”as a reference value” is “measurement value for determination” in STEP03. When setting as “range”, the operation unit 4 is operated and, as shown in FIG. 4, the “calculation expression” of “STEP01 × 0.9” is set to the “reference value” in the lower limit / reference value display unit 13a. And “range value” of “15.0%” is input to the upper limit value / range value display portion 13b. Thereby, the setting of the condition for “determination process” for STEP03 is completed.

  In the resistance measuring apparatus 1 of this example, not only a simple “calculation expression” as in the example of FIG. 4 but also a more complicated “calculation expression” can be set as a “lower limit value” or “upper limit value”. It is possible. Specifically, as an example, “a value obtained by multiplying the value of measurement procedure data D0 measured in STEP01 by“ 0.7 ”” is set as a “lower limit value”, and “measurement procedure data D0 measured in STEP01 is “A value range obtained by subtracting a difference value (absolute value) between the value of the measurement procedure data D0 measured in STEP01 and the value of the measurement procedure data D0 measured in STEP02” from the value is an “upper limit value”. "Is set as the" measurement value range for determination "in STEP 03, the operation unit 4 is operated to display the determination condition setting screen 10a on the display unit 5 as shown in FIG.

  In addition, about the site | part in which the same matter as the determination condition setting screen 10 mentioned above is displayed in this determination condition setting screen 10a, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. Next, an “arithmetic expression” of “STEP01 * 0.7” is input as “lower limit value” to the lower limit value / reference value display portion 13a for STEP04, and “STEP01− | "STEP01-STEP02 |" is inputted as an "upper limit value". Thereby, the setting of the condition for “determination process” for STEP 04 is completed. In addition, although the example in which “calculation formula” is input to both “lower limit value” and “upper limit value” of “measurement value range for determination” has been described, either “lower limit value” or “upper limit value” It is also possible to input an “arithmetic expression” and a numerical value such as “200 mΩ” to the other.

  In this case, in the example of the determination condition setting screen 10a shown in the figure, “determination process” is not executed for STEP01, and “determination process” is set for STEP02 with the setting of the above example described with reference to FIG. For STEP03, the “determination process” is executed with the setting of the above example described with reference to FIG. 4, and for STEP04, both “lower limit value” and “upper limit value” are set. The measurement condition (determination condition) that the “determination process” is executed is set with the setting of the above example in which the “arithmetic expression” is input. Thereafter, the same work as the setting work for the above STEP01 to STEP04 is performed for many STEP05 to STEP42 as necessary. Thereby, the setting of the measurement conditions (determination conditions) for each STEP is completed, and the measurement procedure data D0 is stored in the storage unit 7.

  On the other hand, as an example, when the measurement process is executed in a state where the measurement condition (determination condition) for each STEP is set as in the determination condition setting screen 10a shown in FIG. Each signal cable 2a is connected. Next, the start of processing is instructed by operating the operation unit 4. At this time, the processing unit 6 first performs measurement processing on the measurement target of STEP 01 in accordance with the measurement procedure data D 0 stored in the storage unit 7. Specifically, the processing unit 6 controls the measurement unit 3 to execute a resistance value measurement process in the 300 mΩ range for the measurement target of STEP01.

  In response to this, the measurement unit 3 controls the connection switching unit 2 to connect a predetermined measurement object to the measurement unit 3 in a manner defined as STEP 01 and to disconnect other measurement objects from the measurement unit 3. . Next, the measurement unit 3 measures a constant current measurement current corresponding to the 300 mΩ range from a constant current source (not shown) using two of the four signal cables 2 a connected by the connection switching unit 2. A voltage value between the other two of the four signal cables 2a is measured, and the resistance of the measurement target is determined based on the measured voltage value and the current value of the supplied measurement current. The value is calculated and output as measured value data D1. At this time, in this example, since it is set not to execute the “determination process” during the measurement process of STEP01, the processing unit 6 stores the measurement value data D1 output from the measurement unit 3 in association with STEP01. Store in the unit 7. Thereby, the processing of STEP01 is completed.

  Next, the processing unit 6 controls the measurement unit 3 according to the measurement procedure data D0 to execute the measurement process for the measurement target of STEP02, and the measurement unit 3 outputs the measurement process. The measured value data D1 is stored in the storage unit 7 in association with STEP02. At this time, in this example, since it is set to execute the “determination process” for the value of the measurement procedure data D0 measured by the measurement process of STEP02, the processing unit 6 has the measurement procedure data D0. First, the “measurement value range for determination” is defined. Specifically, the processing unit 6 reads the measurement value data D1 of STEP01 from the storage unit 7, and sets the range of “± 10.0%” with the value of the read measurement value data D1 as the “reference value” as “ It is defined as “measurement value range for judgment”.

  Next, the processing unit 6 determines whether or not the value of the measurement value data D1 of STEP02 stored in the storage unit 7 is a value within the “measurement value range for determination”. At this time, if the value of the measurement value data D1 of STEP02 is a value within the “measurement value range for determination”, the processing unit 6 indicates that the measurement value is a value within the “measurement value range for determination”. A code “IN” is generated as determination result data D2 and stored in the storage unit 7 in association with STEP02. As an example, a character string “STEP02” and a character string “IN” are displayed on the display unit 5. Are displayed side by side on a measurement result display screen (not shown).

  Further, when the value of the measurement value data D1 of STEP02 is less than the “measurement value range for determination”, the processing unit 6 indicates “LOW” indicating that the measurement value is less than the “measurement value range for determination”. Is generated as determination result data D2 and stored in the storage unit 7 in association with STEP02. As an example, the character string “STEP02” and the character string “LOW” are measured on the display unit 5. Displayed side by side on a result display screen (not shown). Further, when the value of the measurement value data D1 of STEP02 is a value that exceeds the “measurement value range for determination”, the processing unit 6 indicates “HIGH” indicating that the measurement value is a value that exceeds the “measurement value range for determination”. ”Is generated as determination result data D2 and stored in the storage unit 7 in association with STEP02. As an example, the character string“ STEP02 ”and the character string“ HIGH ”are measured on the display unit 5. Displayed side by side on a result display screen (not shown). Thereby, the processing of STEP02 is completed.

Next, in accordance with the measurement procedure data D0, the processing unit 6 controls the measurement unit 3 to execute the measurement process for the measurement target of STEP03 in the same manner as the measurement process of STEP01 and STEP02. The measured value data D1 output from is stored in the storage unit 7 in association with STEP03. Subsequently, the processing unit 6 executes “determination processing” for the measurement value data D1 of STEP03 in accordance with the measurement procedure data D0 in the same manner as in the measurement processing of STEP02. The “determination process” in STEP 03 is calculated by an “arithmetic expression” in which the “reference value” in the “measurement value range for determination” is “a value obtained by multiplying the value of the measurement value data D1 in STEP 01 by 0.9”. that is a value except "range values" is "15.0%", the same as in "determination process" in step02, the description thereof is omitted. Thereby, the process of STEP03 is completed.

  Subsequently, in accordance with the measurement procedure data D0, the processing unit 6 controls the measurement unit 3 to execute the measurement process for the measurement target of STEP04 and perform the measurement in the same manner as the measurement process of STEP01 to STEP03. The measurement value data D1 output from the unit 3 is stored in the storage unit 7 in association with STEP04. At this time, in this example, it is set to execute the “determination process” for the value of the measurement procedure data D0 measured by the measurement process of STEP04. Accordingly, the processing unit 6 first defines a “determination measurement value range” for STEP 04 according to the measurement procedure data D0.

  Specifically, the processing unit 6 reads the measured value data D1 of STEP01 and the measured value data D1 of STEP02 from the storage unit 7, respectively. Next, the processing unit 6 multiplies the value of the measurement value data D1 of STEP01 by “0.7” (an example of arithmetic processing in which “reference value × 0.7” is set to “preset arithmetic expression”). To define the “lower limit value” of the “measurement value range for determination” in STEP 04. Subsequently, the processing unit 6 subtracts a difference value (absolute value) between the value of the measurement value data D1 of STEP01 and the value of the measurement value data D1 of STEP02 from the value of the measurement value data D1 of STEP01 (“STEP01 The value of the measured value data D1 of--the value of the measured value data D1 of STEP01-the value of the measured value data D2 of STEP01 | Define the “upper limit” of the “measurement value range for judgment”.

  Next, the processing unit 6 determines whether or not the value of the measurement value data D1 of STEP 04 stored in the storage unit 7 is a value within the “measurement value range for determination”, and “ Any one of the symbols “IN”, “LOW”, and “HIGH” is generated as determination result data D2 and stored in the storage unit 7 in association with STEP04, and a character string “STEP04” and “IN ”,“ LOW ”, and“ HIGH ”are displayed side by side on a measurement result display screen (not shown) of the display unit 5. Thereby, the process of STEP04 is completed. Thereafter, for the other STEP05 to STEP42, the measurement process based on the measurement procedure data D0 is executed in the same manner as each measurement process of STEP01 to STEP04.

  In this case, although different from the above example, according to the resistance measuring apparatus 1 configured as in this example, for example, by preparing one good product in advance, a plurality of electronic devices of the same type are targeted. Product inspection can be performed quickly and easily. Specifically, as an example, a non-defective electronic device (measuring object) is connected to the signal cable 2a in the connection mode of STEP01, and setting that “determination processing” is not executed when setting “measurement conditions” in STEP01 is performed. In addition, when setting each “measurement condition” in STEP02 to STEP42, the condition “measurement value range for determination” in the condition of “determination process” is “± 2.5% with respect to the value of the measurement value data D1 in STEP01”. Set each. In product inspection, each electronic device to be inspected is connected to the signal cable 2a in the connection mode of STEP02 to STEP42.

  As a result, when the measurement processes of STEP01 to STEP42 are sequentially executed, the measurement value data D1 of STEP01, that is, the measurement values of the non-defective electronic device are referred to as the “reference” in the measurement processes of STEP02 to STEP42. Whether or not a value within “measurement value range for determination” with “± 2.5%” as a value is measured is generated as determination result data D2, and the determination result is displayed on display unit 5. Therefore, in such an example, the setting operation for directly inputting the “reference value” (or “lower limit value” and “upper limit value”) for executing the “determination process” is not executed once. Product inspection (determination processing) for 41 electronic devices can be executed.

  As described above, according to the resistance measuring apparatus 1, in the determination process for the measurement value of the measurement value data D1 measured in at least one measurement channel among the measurement channels, the processing unit 6 The measurement value range for determination is defined as a measurement value range for determination with a measurement value of the measurement value data D1 of a measurement channel specified in advance different from one measurement channel as a reference value. By determining whether the channel measurement value is within the determination measurement value range, the “lower limit value” and “upper limit value” for the “determination measurement value range” for “determination processing” Without executing the complicated setting operation of inputting the “reference value” for each STEP, the “lower limit value” and the other lower limit values according to the value of the measured value data D1 of any STEP. You can easily define the "upper limit value" and "reference value". Thereby, the burden required for setting the “determination measurement value range” can be sufficiently reduced.

  In addition, according to the resistance measuring apparatus 1, the processing unit 6 executes a calculation process of a predetermined calculation formula in the determination process, and the “measurement value range specified in advance” as the measurement value range for determination is determined. By defining at least one of the upper limit value and the lower limit value, for a STEP in which a measurement value having a correlation with the value of the measurement value data D1 of another STEP is to be measured, an arithmetic expression indicating the correlation is given. By registering in advance, a “determination measurement value range” in which a value calculated from the measurement value data D1 of a predetermined STEP is set to “lower limit value” or “upper limit value” is automatically defined. Even a user unfamiliar with this type of apparatus can reliably and easily execute the “determination process” without erroneously setting the “determination measurement value range”.

  The configuration of the “measuring device” is not limited to the example of the resistance measuring device 1 described above. For example, the configuration of the resistance measuring device 1 that measures “resistance value” as “electrical parameter” has been described as an example of “measuring device”, but the configuration of “measuring device” is not limited to this, and the current value, voltage Also in the configuration for measuring various “electrical parameters” such as value, power value, and phase, the “upper limit value”, “lower limit value” and “reference” for determination processing are performed in the same manner as the resistance measuring apparatus 1 described above. It is possible to adopt a configuration that defines “value”. Further, the example in which the “determination process” is performed at the time of the measurement process for each “STEP”, which is an example of a plurality of “measurement channels”, has been described. In addition, it is equipped with a “measurement unit” having multiple measurement systems that can perform measurement processing independently, and “measurement processing for each measurement system” as “measurement processing for each measurement channel”. It is also possible to employ a configuration capable of executing processing.

  Furthermore, although the example which displays the character string "IN", "LOW", and "HIGH" which show a determination result on the display part 5 was demonstrated, it replaced with such a structure and "IN", "LOW", and An indicator prepared in advance corresponding to the determination result of “HIGH” is turned on, or different sounds (buzzer sounds, etc.) are output depending on the determination result of “IN”, “LOW” and “HIGH”. Can be adopted.

DESCRIPTION OF SYMBOLS 1 Resistance measuring apparatus 2 Connection switching part 2a Signal cable 3 Measuring part 4 Operation part 5 Display part 6 Processing part 7 Memory | storage part 10,10a Judgment condition setting screen 11 Target STEP display 12 Measurement range display 13 Measurement value range display 13a for determination Lower limit value / reference value display section 13b Upper limit value / range value display section D0 Measurement procedure data D1 Measurement value data D2 Judgment result data

Claims (1)

A measurement unit for measuring the electrical parameters of the measurement object and outputting the measurement values;
A measurement apparatus comprising a processing unit that executes a determination process for determining whether or not the measurement value is a value within a predetermined measurement value range for determination,
The measurement unit has a plurality of measurement channels and is configured to be able to measure the electrical parameter defined in advance for each measurement channel.
Wherein the processing unit is configured in the determination process, wherein the measurement channel specified different advance at least one measurement channel intended for the measurement values measured at least one of said measurement channels of said each measurement channel A measurement value range in which the measurement value is any one of an upper limit value and a lower limit value, and a process for defining any one of a previously specified measurement value range using the measurement value as a reference value as the measurement value range for determination ; A measurement value range in which a calculation result by a calculation process of a preset calculation formula using the measurement value of one measurement channel specified in advance different from the at least one measurement channel is either an upper limit value or a lower limit value And any one of the pre-designated measurement value ranges using the calculation result as a reference value as the determination measurement value range The upper limit value and the lower limit value of the calculation result by the processing to be determined and the calculation processing of a predetermined arithmetic expression using the measurement values of the plurality of measurement channels specified in advance different from the at least one measurement channel A measurement apparatus configured to be able to execute a measurement value range to be determined and a process for defining, as the determination measurement value range, any one of a measurement value range specified in advance using the calculation result as a reference value .

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