JPH05203671A - Measuring probe for diagnosing armature of dc motor and armature diagnostic device - Google Patents

Abstract

PURPOSE:To enable only one person in charge of testing to readily perform the work of diagnosing the armature coil of a DC motor. CONSTITUTION:An armature-diagnosing measuring probe 1 is provided with a measurement/checking directing switch 2, a directing switch 3 for setting and checking the segment of an armature to be tested, and a segment setter 4, and a person in charge of testing is allowed to make the armature-diagnosing measuring probe 1 to abut on a segment while making sure the number of the corresponding segment directly. An armature diagnostic unit comprises a data detection transmitting device A for transmitting by radio measurement signals sent from the armature-diagnosing measuring probe 1, a data processing guidance directing device B which compares the subject segment of each measurement with a measurement signal so as to determine whether the set value is good or bad and which then converts the result into a voice signal and transmits it, and a voice receiving device C for receiving the voice signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measurement probe for armature diagnosis of a DC motor and an armature diagnosis device.

[0002]

2. Description of the Related Art As is well known, a DC motor is often used as a drive power source for various electric devices and equipment in various factories. Since the armature winding of the DC motor is affected by heat, environment, and various stresses during use, short-circuiting or grounding occurs in the winding or the riser portion with the passage of time, and further damage such as breakage occurs. The abnormal phenomenon may occur.

In order to prevent an accident caused by such an abnormal phenomenon, the armature abnormality of the DC motor has been conventionally detected, and various detection methods have been proposed. For example, a DC voltage is applied by bringing electrode terminals for DC voltage application into contact with any two segments. And
A method is known in which electrode terminals for voltage measurement are brought into contact with appropriate two adjacent segments located between the segments, and the voltage between both terminals is measured to determine the quality.

Further, a method may be used in which a constant current is applied between adjacent segments and the quality is judged from the difference in voltage drop between the segments. In addition, a method may be used in which a buzzer sounds to notify the end of measurement, an abnormality in the measurement result, or the like during the work of contacting the segments while shifting the measurement terminals one by one. A technique for detecting an abnormality of the armature in this way is, for example, in Japanese Utility Model Laid-Open No. 58-08058
No. 0 is proposed.

[0005]

In the case of the DC motor described above, the number of windings becomes 1000 or more when the size is increased. Therefore, when the voltage is measured, the measuring terminals must be brought into contact with the segments having a width of several mm while shifting the measuring terminals one by one. Moreover, since the result of the voltage measurement must be checked and the measurement result must be recorded in correspondence with the segment number, the measurement / recording work becomes extremely troublesome. Therefore, these measurement / recording operations must be performed by a plurality of people in collaboration, and there is a problem of poor work efficiency.

In addition, the method of notifying the end of measurement or the abnormality of the measurement result by the buzzer sound during the work of contacting the segments while shifting the measuring terminals one by one causes the buzzer sound to be disturbed. There is an inconvenience of not knowing whether the sound is an abnormality notification buzzer sound of the measurement result or a buzzer sound for notifying the end of measurement, that is, a buzzer sound for notifying an increase in the segment number.

For this reason, conventionally, it was impossible to directly confirm whether the target segment was actually measured or whether the target segment was skipped. There was a problem that a response was required. Also, the winding of the armature of the DC motor is
The characteristic values differ depending on the size, capacity, wiring method, etc., and it is necessary to make a diagnosis based on the set value corresponding to the armature at the time of measurement, and the setting work is very troublesome. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to make it possible for a single person to easily perform a diagnostic work on an armature winding of a DC motor.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to an armature diagnostic measurement probe having a pair of terminals for voltage application and a pair of terminals for current detection, for confirming measurement work and for measuring armature. A measurement / confirmation instruction switch for making a pass / fail judgment, a setting / confirmation instruction switch for setting the number of the segment to be measured, and for checking the segment number currently being measured, and a A segment setter for setting an arbitrary segment number for interrupting measurement on the way and for performing measurement, and for setting selection of the end of measurement work is provided.

Another feature of the present invention is that
Apply the measurement signal sent from the armature diagnostic measurement probe, collate the target segment number for each measurement, and determine the quality by comparing the set value of the target segment and the measurement signal, A signal processing device that records the result of the quality determination and a voice conversion device that converts the quality confirmation signal indicating the quality of the measurement result into an audio signal are provided to configure an armature diagnostic device for the DC motor.

Another feature of the present invention is that a weak radio wave transmitter for wirelessly transmitting a measurement signal sent from the armature diagnostic measurement probe and a radio wave sent from the weak radio wave transmitter. A signal processing device for collating the target segment number for each measurement with the receiving device for determining the quality of the target segment by comparing the set value of the target segment with the measurement signal, and recording the result of the quality determination And a voice conversion device for converting a quality confirmation signal indicating the quality of the measurement result into a voice signal, a voice transmitter for transmitting an output sent from the voice conversion device, and a voice signal sent from the voice transmitter. And a voice receiving device for receiving.

[0011]

[Function] By providing the measurement / confirmation instruction switch, the segment setting / confirmation instruction switch of the armature to be measured, and the segment setter on the armature diagnostic measurement probe, the operator can directly confirm the number of the corresponding segment. It is possible to bring the measurement probe for armature diagnosis into contact, and it is possible to identify the measurement target segment and the set value set in the signal processing device described later, and there is the inconvenience of skipping the measurement target segment. Will be resolved.
Further, the measurer can instruct the start and confirmation of the measurement, so that the diagnosis can be performed at the pace of the measurer.

In addition, the measurement segment number of each measurement is collated and compared with the set value to judge the quality, and
By providing a signal processing device for recording the result and a voice conversion device for converting the quality confirmation signal of the measurement result into a voice signal, identification of the detection target segment and the set value, measurement start and interruption of each segment Or end,
It becomes possible for one measurer to make a diagnosis at the measurer's pace while confirming the measurement result with the synthesized voice.

Further, the measurement signal from the armature diagnostic measurement probe is wirelessly transmitted, the wirelessly transmitted measurement signal is received, and the target segment number for each measurement is collated and compared with a set value. By determining whether the quality is good, recording the measurement result, and making it possible to notify the measurer of the quality of the measurement result by voice, the measurer need only hold the measurement probe, and it is relatively wide. It becomes possible to operate freely over the range.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an overall system configuration diagram showing an example of the device of the present invention, FIG. 2 is a schematic explanatory diagram of a voice receiving device, and FIG.
FIG. 4 is an explanatory diagram of a data detection / transmission device, FIG. 4 is an explanatory diagram of switches provided in a measurement probe, and FIG. 5 is an explanatory diagram of a data processing guidance instruction device.

As shown in FIG. 1, the armature diagnostic apparatus of this embodiment comprises a data detection / transmission apparatus A, a data processing guidance instruction apparatus B, a voice receiving apparatus C and the like. Further, as shown in FIG. 3, the measurement probe 1 is provided in the data detection / transmission device A, in which a pair of current application terminals (not shown) and a pair of voltage detection terminals (not shown) are provided.
And are provided. These current application terminals and voltage detection terminals are mounted so as to straddle two adjacent segments S.

The measuring probe 1 is provided with a first switch 2 and a second switch 3 as shown in the switch explanatory view of FIG. The first switch 2 is provided for confirming work and determining pass / fail for an audio signal from a data processing guidance instruction device described later. The second switch 3 is provided for setting the number of the segment S and for checking the segment number currently being measured.

In addition to these switches 2 and 3, the measuring probe 1 is provided with a segment setting device 4. The segment setter 4 is used when an interrupt is made during measurement to measure a specific segment S, or when the number of an arbitrary segment S is set. Also,
This segment setter 4 can also set the selection of the end of measurement work.

In FIG. 3, 5 is a constant current generator for supplying a power source required for measurement, and 6 is an A / D converter for converting an analog voltage signal obtained when a current is applied into a digital signal. Reference numeral 7 denotes an input arithmetic processing unit (microcomputer), which receives various input signals sent from the switches 2 and 3, the segment setter 4, the A / D converter 6 and the like provided in the measurement probe 1. It is provided for processing and outputting necessary data to the weak radio wave transmitter 8. Next, 9 is an antenna, and the signal supplied from the weak radio wave transmitter 8 is transmitted to the data processing guidance instruction device B via this antenna 9.

A measurement probe 1 equipped with first and second switches 2 and 3 and a segment setting device 4, a constant current generator 5, an A / D converter 6, an input arithmetic processing unit 7, a weak radio wave transmitter 8, Data detection / transmission device A through antenna 9 or the like
Is configured. Then, this data detection transmission device A
It is compact and lightweight and is easily portable.

FIG. 5 shows a data processing guidance instructing device B for processing the data given from the data detecting and transmitting device A. The data processing guidance instruction device B is provided with an antenna 10 for receiving a radio signal transmitted from the data detection transmission device A.

The signal received by the antenna 10 is digitally encoded through the weak radio wave amplifier 11 and the reception modem 12 and given to the signal processing / selecting device 13. The signal processing / sorting device 13 is composed of a microcomputer, and receives the digital code from the receiving modem 12, statistical processing of signals, data sorting, normal check of received data, work taking into account conditions of various switches and setting devices. Output instructions etc. In addition, the signal processing / sorting device 13 transmits / receives data to / from the host personal computer 14 and the voice synthesizing device 15 to provide appropriate guidance for guidance / determination.

On the other hand, the host personal computer 14 receives the data sent from the signal processing / sorting device 13, performs a credibility check, various statistical processing analysis, etc., and indicates the data loading state to the signal processing / sorting device 13, and the CTR. Display, save data, etc. The voice synthesizer 15 is a device provided to convert the voice code from the signal processing / sorting device 13 into a voice signal. The output of the voice synthesizer 15 is directly broadcast as voice guidance from the monitor speaker 17. Or, it is converted into radio waves by the voice transmitter 16, and the voice transmitting antenna 1
It is also sent via.

The output of the voice synthesizer 15 transmitted from the voice transmitting antenna 18 is received by the voice receiving antenna 21 of the voice receiving device C. The audio receiving device C includes an antenna 21, an audio receiver 22, and a headphone 2 as shown in FIG.
It is configured so as to be portable by 3 and the like, and is worn by a worker as a set.

The voice radio wave received by the voice receiving antenna 21 is converted into a voice signal again by the voice receiver 22 and converted into a voice (vibrating sound) by the headphones 23 to be sounded. Thereby, the worker can hear the output of the voice synthesizer 15. In addition, 1 in FIG.
Reference numeral 9 denotes a DC automatic voltage generator for supplying drive power to each device constituting the data processing guidance instruction device B. Further, reference numeral 20 is a dolly, and the data processing guidance instruction device B is mounted on the dolly 20 so as to be freely movable.

In the present embodiment, all information is exchanged wirelessly among the three devices, the data detection / transmission device A, the data processing guidance instruction device B, and the voice reception device C. Therefore, it is sufficient to bring only the data detection transmission device A and the reception device C to the work site,
By disposing the data processing guidance instructing device B in the radio wave reachable area near the work site, it is possible to perform the armature measurement operation by only one measurer.

Note that various methods can be used instead of the above wireless system. That is, for example, each output signal of the input arithmetic processing unit 7 of the data detection / transmission apparatus A is received by the reception modem 12 of the data guidance instructing apparatus B by using a lead wire.
To enter. Then, by processing the input signal, converting the processing result into a voice signal by the voice synthesizer 15, and supplying the voice signal to the monitor speaker 17, it is possible to directly listen to the voice guidance and perform a response operation. ..

Next, the diagnosis work of the armature coil of the DC motor using the device of the present invention will be described. First, the data processing guidance instruction device B is turned on and
The segment number is set by the switch 3 of the measurement probe 1 and the standby state is set. Then, a pair of two terminals provided on the measurement probe 1 are brought into contact with the two numbered segments S of the DC motor D to be measured, and measurement is performed by the input operation of the measurement / confirmation switch 2. start.

As described above, the armature winding of the DC motor D is different depending on the size, the capacity and the connection method,
The pattern of its periodicity is also different. Therefore, in order to perform this pattern recognition first, for example, about 20 segments S are continuously measured, and a signal processing selection device is used as a set value of a pattern and an absolute value of the periodicity of the armature winding of the measured motor D. Store in 13. Since this set value is notified from the voice transmitter 16 as "The set value is XX mΩ", the measurer should be aware of the set value when measuring each segment S, which will be described later. This is the judgment data.

In the subsequent measurements, every time the terminals of the measuring probe 1 are shifted and brought into contact with the segment S one by one, the audio transmitter 16 gives "data value ◯ m" for each data.
If it is OK, press the measurement / confirmation switch 2 and take in data for each segment S corresponding to the host personal computer 14. Meanwhile, N
In case of G, measure within a predetermined confirmation time, for example within 2 seconds.
If the confirmation switch 2 is not pressed, it is automatically canceled.

The terminal of the measuring probe 1 is connected to the segment S.
When abutted against, the detected value may fluctuate depending on the surface condition of the segment S or the abutting position. However, if the contact is continued until the data at the same location becomes stable, the host PC 14 recognizes the data and then the "data value ○○ mΩ
It is possible to prevent the inconvenience that the detected value fluctuates depending on the surface condition of the segment S and the contact position.

When these data values for each segment S are loaded into the host personal computer 14, the segment S number is automatically added for each measurement. Further, when the segment number is changed due to re-measurement or the like in the middle, the set value of the segment setter 4 can be changed and the segment number can be set again by the segment setting / confirmation switch 3.

In this case, in this embodiment, the segment number is set again as follows. In other words, in the audio signal, “Is the segment number XXXXX?”
And make sure to check
The confirmation switch 3 is used to respond.

When the corresponding segment number is set, a voice signal "Segment number XXXXX starts" is sent, and then the measurement is started. When confirming the segment number on the way, if the code of the segment setter 4 is set to a predetermined number, a voice signal "It is the current segment number ○○○○" is obtained.

The measurement is performed as described above. When ending the measurement, the code of the segment setting device 4 is set to "0" and the segment setting / confirming switch 3 is pressed. By doing this, there is a voice confirmation "Do you want to finish?". Answer this and press the switch 3 again to end the measurement. By performing the measurement in this manner, a series of measurement data is saved with a file name added. The sound in this case ends with "End. File saved", and the device is put in the standby state in the initial state. It should be noted that analysis of stored data and creation of graphs and the like can be processed as necessary.

[0035]

As described above, according to the present invention, the measurement / confirmation indicating switch, the segment setting / confirmation indicating switch of the armature to be measured, and the segment setter are used as the measurement probe for armature diagnosis. The measurement probe for a armature diagnosis can be brought into contact with the measurement probe while directly checking the number of the corresponding segment. Therefore, it is possible to reliably identify the measurement target segment and the set value set in the signal processing device, and skip the measurement target segment. Further, since the measurer can instruct the measurement start and confirmation, the diagnosis can be performed at the measurer's pace.

According to the second aspect of the present invention, one measurer confirms the measurement result with the synthesized voice while identifying the detection target segment and the set value, and the measurement start, interrupt and end of each segment. Moreover, the diagnosis can be made at the pace of the measurer.

According to the third aspect of the invention, the measurer can perform the measurement only by holding the measurement probe, and can move freely over a relatively wide range. Also, when you start reading data and proceed to the next task, you can always check the current situation directly by voice,
Work efficiency can be significantly improved by eliminating the work of contacting people in a bad environment such as noise and using extra nerves such as entering data, and check each step. It can be performed accurately, the occurrence of mistakes can be significantly reduced, and highly accurate diagnosis can be performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an entire system showing an example of a device of the present invention.

FIG. 2 is a configuration diagram for explaining an outline of a voice receiving device.

FIG. 3 is a configuration diagram for explaining a data detection / transmission device.

FIG. 4 is an explanatory diagram of switches arranged on the measurement probe.

FIG. 5 is a configuration diagram for explaining a data processing guidance instruction device.

[Explanation of symbols]

 1 Measurement probe 2 Measurement / confirmation instruction switch 3 Segment setting / confirmation instruction switch 4 Segment setting device 5 Constant current generator 6 A / D converter 7 Input processing unit 8 Weak radio wave transmitter 9 Antenna 10 Data receiving antenna 11 Weak radio wave Amplifier 12 Reception modem 13 Signal processing selection device 14 Host personal computer 15 Voice synthesis device 16 Voice transmission device 17 Monitor speaker 18 Voice transmission antenna 19 DC automatic voltage generation device 20 Car 21 Voice reception antenna 22 Voice receiver 23 Headphone A Data detection transmission Device B Data processing guidance device C Audio receiver

Claims (3)

[Claims] 1. An armature diagnostic measurement probe having a pair of terminals for voltage application and a pair of terminals for current detection, for confirming measurement work and determining whether the armature is good or bad. Measurement / confirmation instruction switch, the setting / confirmation instruction switch for setting the number of the segment to be measured and for checking the segment number currently being measured, and interrupting the measurement during the measurement A measuring probe for armature diagnosis of a DC motor, comprising: a segment setting device for setting the number of an arbitrary segment and setting the selection of the end of measurement work. 2. A measurement signal sent from the armature diagnostic measurement probe is applied, the target segment number for each measurement is checked, and the setting value of the target segment is compared with the measurement signal to determine whether the measurement result is good or bad. An armature for a DC electric motor, which is provided with a signal processing device for judging and recording the result of the quality judgment, and a voice conversion device for converting a quality confirmation signal indicating the quality of the measurement result into an audio signal. Diagnostic device. 3. A weak radio wave transmitter for wirelessly transmitting a measurement signal sent from the armature diagnostic measurement probe, a receiver for receiving the radio wave sent from the weak radio wave transmitter, and an object for each measurement. Check the segment number and compare the set value of the target segment with the measurement signal to determine the quality, and a signal processing device that records the result of the quality determination, and a quality check indicating the quality of the measurement result. An audio conversion device for converting a signal into an audio signal, an audio transmitter for transmitting an output sent from the audio conversion device, and an audio reception device for receiving an audio signal sent from the audio transmitter are provided. An armature diagnostic device for a DC motor, characterized by: