JP2010218056A - Data collection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data collection system, capable of collecting measurement data of each detector measured at an identical time point, with accuracy of a predetermined time period, for example, 10 nanoseconds or smaller. <P>SOLUTION: The data collection system includes a group of detectors, respectively disposed in the vicinity of an electronic apparatus and a plurality of measurement points in the periphery thereof, for measuring physical quantity changes, including voltages, currents and electromagnetic waves at the points concerned, at a high-speed period of the order of a few nanoseconds to 10 nanoseconds, and for retaining data for certain time duration. The data collection system collects the data collected by each detector, via radio. On detecting that a measurement signal exceeds a set threshold, or a waveform matches a certain pattern, a detector outputs the detection to another detector in the form of a trigger output by an optical signal, through an optical fiber, so as to transmit it to the detected data collection device. The other detector, on receiving the trigger optical signal, transmits data of past time, which is obtained by subtracting time required for the trigger transmission from the trigger signal reception time, to the data collection device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a plurality of detectors for detecting changes in physical quantities such as voltage, current, and electromagnetic waves at desired positions in a housing housing a control device body, such as an electronic device (electronic control device) and an electric motor drive device. The present invention relates to a data collection system that is capable of transmitting a detection result of a detector to a data collection device located away from a casing by wireless communication.

  As an example in which a plurality of detectors are arranged at locations apart from each other, collect measurement data, and monitor the object based on the change time of the measurement data and the data, the “internal portion of the high-voltage device” There is an invention of a “discharge monitoring device”, which is a system in which a plurality of detectors are arranged at locations distant from each other, collect measurement data, and monitor the object based on the change time of the measurement data and the data.

  Hereinafter, Patent Document 1 will be described with reference to FIG. FIG. 13 shows a system for monitoring a partial discharge generated in a high-voltage apparatus. Ultrasonic waves generated by the partial discharge are detected by a plurality of ultrasonic microphones 122, current pulses are detected by a current detector 123, and these signals are analog-digital signals. The data is sent to the data collection unit 125A via the conversion unit (hereinafter A / D unit) 124A. The data collection unit 125A stores the time series data in the buffer memory 224 for a certain period of time via the communication LSI 223. The MPU (microprocessor) 225 of the data collection unit 125A determines whether the data of a plurality of ultrasonic microphones and the current pulse data exceed a threshold value. If any of the data exceeds the threshold value, the data string at the same time is determined. The discharge waveform data is stored in an external storage device such as a notebook computer 126. Further, when the discharge phenomenon is detected, the place where the discharge is generated is specified by the difference between the time when the pulse current is generated and the time when each ultrasonic wave is detected. This device captures the discharge phenomenon with ultrasonic waves and current pulses on the ground line, performs digital conversion, and sequentially stores them in a buffer memory.

Japanese Patent Application Laid-Open No. 2002-131366 “Internal Partial Discharge Monitoring Device for High Voltage Equipment”

  In the above-mentioned Patent Document 1, although not shown in the figure, the “time” of the occurrence is not the time at which an ultrasonic wave is detected at each microphone part or the time at which a current pulse is detected, but a buffer memory in the data collection unit 125A. In 224, the storage time or the time when the threshold is exceeded is determined as the time. Therefore, when the high-voltage device becomes large and the transmission delay of the ultrasonic wave is large, the accuracy of the time is deteriorated. In particular, if the phenomenon of discharge is about several microseconds, the time for transmitting sound and the time for transmission are overwhelmingly large.

  As described above, in the example of Patent Document 1, “a short time physical phenomenon in which the data of the detectors installed at locations distant from each other is several microseconds when a certain detector exceeds the threshold is detected with a time error of about 10 nanoseconds. It was not possible to collect data from other detectors.

  On the other hand, since electronic devices have been operated for a long time since the introduction of new devices in recent years, the environment around the installation has often changed since the time of installation, which can cause failures and abnormalities.

  1) When the power supply line is laid near the signal line, noise to the signal line is generated.

  2) When the power line passes in the vicinity, it becomes noise to the power source of the electronic device.

  3) If an inverter device is installed nearby, it will cause noise to the power source and signal line of the electronic device.

  4) The electronic control function of the drive device is hindered by noise generated by the drive device itself.

  5) Discharge due to static electricity is likely to occur at low humidity and directly destroys electronic equipment.

  When an electronic device fails or stops due to such environmental changes, the failure is caused by an accidental failure of the components that make up the device, or a component failure or malfunction occurs due to the installed environment. It is difficult to judge whether For example, when the electronic control device goes down due to voltage fluctuations of the DC power supply used inside the electronic device, the ripple is increased due to accelerated electrolyte evaporation of the smoothing capacitor of the power supply device due to high temperature, or induced noise in the power supply output Is accumulated, noise is mixed in the AC input (AC input) of the power supply, and the power supply device is grounded insufficiently, or the ripple is on the DC output side, or the power supply device ground is defective and stored There may be a plurality of causes such as whether the electric charge is discharged when the humidity is lowered or due to an electromagnetic wave generated accompanying it. In addition, noise may be induced current caused by motor operation, switching noise caused by an inverter, induced noise generated when a relay or switch is turned on and off, and the countermeasures are different for any of them.

  If an abnormal phenomenon that can always be observed is observed with only one physical quantity, it is possible to attach an appropriate probe to a measuring instrument such as a normal oscilloscope and measure it. When instantaneous noise due to the operation of contacts such as external relays and switches is affected, the phenomenon is a few microseconds or less, and the frequency is once a year or less. In addition, when investigating abnormalities from the environment of electronic equipment, it is rare that a single measurement is sufficient, and at a plurality of spatially separated measurement locations, the degree of freedom of the installation location and the number of measurement locations, The degree of freedom in increasing / decreasing the number and the small size required to be used in narrow gaps in equipment are also required. In addition, in order to accurately observe such troubles, it is necessary to perform long-term monitoring and simultaneously measure multiple factors at multiple locations that are likely to be the cause. And if a certain measured value of a detector exceeds a threshold value, or if the waveform matches a certain pattern, is there any relation between those physical quantities and other physical quantities that are measured at the same time? It is necessary to investigate the degree of the influence if there is a possibility of relation.

  For example, when noise exceeding the allowable level is superimposed on the DC power supply, is there noise on the AC input, how much noise component of the AC input can flow from ground to ground with the line filter, and if grounding is insufficient? If the relationship between the impedance of the ground wire and the high-frequency harmonics of the noise is appropriate, or if a strong current change occurs on the ground line, the DC power supply voltage of the electronic device at that time It is necessary to investigate and judge the relevance of whether it is affected, whether it is within a tolerable range without malfunction, or whether it is just before the malfunction.

  The above-mentioned multiple / arbitrary locations are possible. ・ Small size ・ Arbitrary number can be set, the number can be increased or decreased at any time, and it is not affected by operation in electromagnetic environment. It is desirable to exchange data wirelessly (instead of wires that are susceptible to noise).

  In this case, if the sampling time of the phenomenon of several microseconds above is set, the transmission delay time of the trigger signal for synchronization becomes a problem, even if the detector has a precise clock inside. How to match it becomes a problem.

  The present invention provides a data collection system that measures data of physical quantities such as voltage and current of an electronic device with a plurality of detectors installed at locations apart from each other, and transmits the data to a data collection device in a wireless manner for a predetermined time. For example, it aims at providing the data collection system which can collect the measurement data of each detector of the same time with the precision of 10 nanoseconds or less.

In order to achieve the above object, the invention corresponding to claim 1 is configured to measure changes in physical quantities such as voltage and current of an electronic device with a plurality of detectors, and to measure the measured physical quantity data in a wireless communication system. In the data collection system that transmits to the data collection device and performs data processing in the data collection device,
Each detector includes a determination detection unit, an electro-optical conversion unit, a photoelectric conversion unit, and a data editing unit,
The determination detection unit is configured to detect whether the measured physical quantity exceeds a threshold value or matches a reference waveform pattern, and outputs an internal trigger signal when the determination condition is satisfied,
The electro-optical conversion unit captures an internal trigger signal from the determination detection unit and converts it into a light trigger signal.
The photoelectric conversion unit takes in an external trigger signal from a detector other than itself and converts the external trigger signal into an electrical trigger signal.
The data editing unit captures the internal trigger signal from the determination detection unit and the external trigger signal from the photoelectric conversion unit, and transmits the measured physical quantity data to the data collection device when the trigger signal is captured. Command output,
The optical trigger signal from the electro-optical conversion unit included in each detector is guided to the optical coupler via the first optical transmission line, and the optical trigger signal guided to the optical coupler is routed via the second optical transmission line. The external trigger signal is obtained by guiding it to the photoelectric conversion unit included in each detector, and the self-detector among the trigger signals captured by the data editing unit of each detector Compared to the generation timing of the internal trigger signal from the determination detection unit, the generation timing of the external trigger signal from the determination detection unit included in other detectors other than the detector is the electro-optic conversion unit. The transmission delay is caused by transmitting to the data editing unit via the first optical transmission line, the optical coupler, the second optical transmission line, and the photoelectric conversion unit. In the data collection device, It is a data acquisition system to obtain the data at the same time collected by the detector.

  According to the present invention, in a data collection system for measuring physical quantity data such as voltage and current of an electronic device with a plurality of detectors installed at locations apart from each other, and transmitting this to a data collection device in a wireless manner, It is possible to provide a data collection system capable of collecting the measurement data of each detector at the same time with an accuracy of a predetermined time, for example, 10 nanoseconds or less.

The block diagram which shows schematic structure of the data collection system of this invention. The wave form diagram for demonstrating the function of the determination detection part of FIG. The wave form diagram for demonstrating the effect of the data collection system of FIG. The wave form diagram for demonstrating the effect of the data collection system of FIG. FIG. 3 is a diagram for explaining the operation in the first embodiment of the present invention, and shows a processing flow in a data editing unit in FIG. 1. FIG. 9 is a diagram for explaining the operation in the second embodiment of the present invention, and shows the processing flow in the data editing unit in FIG. 1. FIG. 10 is a diagram for explaining the operation in the third embodiment of the present invention, and shows the processing flow in the data editing unit in FIG. 1. FIG. 6 is a block diagram for explaining a fourth embodiment to a sixth embodiment of the present invention and explaining points different from FIG. 1. FIG. 9 is a diagram for explaining the operation in the fourth to sixth embodiments of the present invention, and shows the processing flow in the data editing unit in FIG. 8. FIG. 10 is a diagram for explaining the operation in the fifth embodiment of the present invention, and shows the processing flow in the data editing unit in FIG. 8; FIG. 10 is a diagram for explaining the operation in the sixth embodiment of the present invention, and shows a processing flow in the data editing unit in FIG. 8; FIG. 9 is a block diagram for explaining a point different from FIG. 1 for explaining a seventh embodiment of the present invention. The block diagram for demonstrating the problem of invention of patent document 1. FIG.

  Hereinafter, embodiments of a data collection system of the present invention will be described with reference to the drawings. The data collection system of the present invention measures changes in physical quantities such as voltages and currents of electronic devices with a plurality of detectors, and transmits the measured physical quantity data to the data collection device 6 by wireless communication. The data collection system performs data processing in this data collection apparatus, and each detector has a configuration described below.

  Here, an example in the case of a DC voltage detector (DC sensor) 2, a ground current detector 3, and an AC voltage detector (AC sensor) 4 will be described as detectors for detecting physical quantities. Needless to say, it is good.

[Example 1]
Example 1 will be described with reference to FIGS. The DC voltage detector (DC sensor) 2 includes an analog / digital converter (hereinafter referred to as A / D) unit 21 that takes in the DC voltage of the power supply device 1 at a timing of, for example, 10 nanoseconds and converts it into a digital value, and an A / D unit 21. It is determined (detected) that the digital data exceeds the set value (threshold value), or it is determined (detected) that the waveform of the digital data matches the reference waveform pattern. A waveform pattern match detection unit (hereinafter referred to as a determination detection unit) 22, a physical storage unit 23 that takes in physical quantity data (digital values) from the A / D unit 21 for a certain period of time, and a determination The internal trigger signal from the detection unit 22 and the external trigger signal from the photoelectric conversion unit, which will be described later, are captured and stored in the temporary storage unit 23 when the trigger signal is captured. A data editing unit 24 that outputs a command to transmit the received physical quantity data to the data collection device 6, a wireless communication circuit unit 25 that communicates data from the data editing unit 24 to the common data collection device 6, and a determination detection unit The internal trigger signal from 22 is captured and converted into an optical trigger signal, for example, an electro-optical conversion unit 26 composed of a photodiode, and an external trigger signal from a detector other than itself among the detectors described later is captured, and this external trigger A photoelectric conversion unit 27 made of, for example, a phototransistor for converting a signal into an electrical trigger signal is provided.

  The configuration described above is the DC voltage detector 2, and similarly, the ground current detector 3 and the AC voltage detector 4 have the same configuration.

  That is, the earth current detector 3 takes in the earth current of the power supply device 1 at a timing of 10 nanoseconds, for example, and converts it into a digital value, and the digital from the A / D unit 31. Determines (detects) that the data has exceeded the set value (threshold), or determines (detects) that the waveform of the digital data matches the reference waveform pattern, and outputs an internal trigger signal when this determination condition is met A waveform pattern matching detection unit (hereinafter referred to as a determination detection unit) 32, a temporary storage unit 33 that takes in physical quantity data (digital value) from the A / D unit 31 for a certain period of time, and temporarily stores it, and a determination detection unit The internal trigger signal from 32 and the external trigger signal from the photoelectric conversion unit to be described later are captured, and stored in the temporary storage unit 33 when the trigger signal is captured. A data editing unit 34 that outputs a command to transmit the received physical quantity data to the data collection device 6, a wireless communication circuit unit 35 that communicates data from the data editing unit 34 to the common data collection device 6, and a determination detection unit The internal trigger signal from 32 is captured and converted into a light trigger signal, for example, an electro-optical conversion unit made of, for example, a photodiode, and an external trigger signal from another detector other than itself among the detectors described later is captured, A photoelectric conversion unit such as a phototransistor 37 made of, for example, a phototransistor that converts the external trigger signal into an electrical trigger signal is provided.

  The AC voltage detector 4 includes an analog-digital converter (hereinafter referred to as A / D) unit 41 that takes in the AC voltage of the power supply device 1 of the power supply device 1 at a timing of, for example, 10 nanoseconds and converts it into a digital value, and an A / D unit. It is determined (detected) that the digital data from 41 has exceeded the set value (threshold value), or determined (detected) that the waveform of the digital data matches the reference waveform pattern, and the internal condition is satisfied when this determination condition is satisfied. A waveform pattern match detection unit (hereinafter referred to as a determination detection unit) 42 that outputs a trigger signal, and a temporary storage unit 43 that takes in physical quantity data (digital values) from the A / D unit 41 for a certain period of time and stores them temporarily. When the internal trigger signal from the determination detection unit 22 and the external trigger signal from the photoelectric conversion unit to be described later are captured and the trigger signal is captured, the temporary storage unit 43 A data editing unit 44 that outputs a command to transmit the stored physical quantity data to the data collection device 6; a wireless communication circuit unit 45 that communicates data from the data editing unit 44 to the common data collection device 6; Captures an internal trigger signal from the unit 42 and converts it into an optical trigger signal, for example, an electro-optical conversion unit 46 formed of a photodiode, and an external trigger signal from a detector other than itself among the detectors to be described later. A photoelectric conversion unit 47 made of, for example, a phototransistor that converts the trigger signal into an electrical trigger signal is provided.

  Then, the optical trigger signals from the electro-optical converters 26, 36, 46 included in the detectors 2, 3, 4 are transmitted from, for example, a star coupler via the first optical transmission lines 28, 38, 48 formed of, for example, optical fibers. The optical trigger signal guided to the optical coupler 5 is provided to each of the detectors 2, 3, 4 via the second optical transmission path, for example, optical fibers 28A, 38A, 48A. It is configured to obtain an external trigger signal by guiding it to the converter phototransistors 27, 37, 47, and from the detection detectors 22, 32, 42 included in the own detector among the detectors 2, 3, 4. Compared with the generation timing of the internal trigger signal, the generation timing of the external trigger signal from the determination detectors 22, 32, 42 included in the other detectors other than itself among the detectors 2, 3, 4 Part 26, 36, 6. Transmit to the data editing sections 24, 34, 44 via the optical transmission paths 28, 38, 48, the optical coupler 5, the optical transmission paths 28A, 38A, 48A, and the photoelectric conversion sections 27, 37, 47. In consideration of the transmission delay that occurs in the above, the data collection device 6 is a data collection system that obtains data at the same time collected by the detectors 2, 3, and 4.

  The earth current detector 3 detects the earth current from the terminal FG of the power supply device 1, and the AC voltage detector 4 measures the AC voltage via the line filter 7 at the AC terminal AC of the power supply device 1. ing.

FIG. 2 is a diagram for explaining a waveform pattern match detection unit that detects that the waveform of the input value matches a certain pattern among the functions of the determination detection units 22, 32, and 42. FIG. ,
FIG. 2B shows a waveform pattern in the case of electromagnetic waves, for example. The waveform pattern match detection unit has a function of detecting whether these waveform patterns match the reference waveform pattern. .

  Since the data editing units 24, 34, and 44 of the detectors 2, 3, and 4 in FIG. 1 all operate in the same manner, here, representatively, 24 operations, specifically when the environment of the electronic device changes. The operation of the data editing unit 24 in the detector 2 will be described with reference to the flowchart of FIG. When the voltage at the measurement location changes due to electromagnetic noise or the like, the change is measured as digital data by the A / D unit 21 and stored in the temporary storage unit 23, and the value exceeds the set threshold value or is measured. Whether or not a series of waveforms matches a preset pattern is determined by the determination detection unit 22, and when it corresponds, a trigger signal (internal trigger signal) is transmitted to the data editing unit 24, and the trigger signal is also transmitted. Are transmitted to other detectors via the electro-optic conversion unit 26 and the optical transmission lines 28, 38A, 48A. When a trigger signal for exceeding a threshold value or waveform pattern matching from another detector 3 or 4 arrives via the optical transmission path 38, 48 or 28 A, the optical signal is subjected to data editing via the photoelectric converter 27. Part 24 receives.

  The data editing units 24, 34, and 44 determine whether or not the trigger detection is made by the self-detector (S1). When the trigger signal is detected by the self-detector, the data at the detection time is transmitted to the wireless communication circuit unit 25. , 35 and 45 and transmitted to the data collection device 6 of FIG. 1 (S2). If the trigger signal arrives as an optical signal from another detector instead of the trigger signal generated by the own detector in S1, the data of the time obtained by subtracting the delay time of the optical transmission system predicted in advance from the arrival time Is transmitted to the data collection device 6 by the wireless communication circuit units 25, 35, 45 (S3).

(effect)
3 is a diagram for explaining the operation and effect of the data collection system of FIG. 1, FIG. 3 (a) is a DC voltage waveform detected by the DC voltage detector 2, and FIG. 3 (b) is an AC voltage detection. FIG. 3C shows a ground current waveform detected by the earth current detector 3. In FIG. 3, when the DC voltage waveform exceeds the threshold value, an internal trigger signal is output from the determination detection unit 22, and the internal trigger signal is converted into the electro-optical conversion unit 26, the optical transmission path 28, the optical coupler 5, the optical transmission path 48A, The signal is input to the data editing unit 44 of the AC voltage detector 4 via the photoelectric conversion unit 47, and the internal trigger signal is transmitted to the electrical / optical conversion unit 26, the optical transmission path 28, the optical coupler 5, the optical transmission paths 38A, 48A. Are input to the data editing units 34 and 44 of the earth current detector 3 and the AC voltage device 4 via the photoelectric conversion units 37 and 47. However, in this case, since there is no change in the ground current waveform and the AC voltage waveform, it can be estimated that there is no influence due to noise of the AC voltage detector 4 and the ground current detector 3.

  4 is a diagram for explaining the operation and effect of the data collection system of FIG. 1. FIG. 4 (a) is a DC voltage waveform detected by the DC voltage detector 2, and FIG. 4 (b) is a ground current detection. 3 is a ground current waveform detected by the device 3. In FIG. 4, when the DC voltage waveform exceeds the threshold value, an internal trigger signal is output from the determination detection unit 22, the internal trigger signal is converted into an optical trigger signal by the electro-optical conversion unit 26, and the converted optical trigger signal is The optical current is transmitted to the photoelectric conversion unit 37 through an optical transmission system including the optical transmission path 28, the optical coupler 5, and the optical transmission path 38A. 3 is input to the data editing unit 34. In this case, the trigger signal due to the ground current waveform is not generated, but the ground current waveform of the ground current detector 3 is changed before the trigger signal is input to the data editing unit 34 of the ground current detector 3. From this, it can be estimated that the change in the ground current waveform has affected the DC voltage waveform measured by the DC voltage detector 2.

  Thus, between the detectors, for example, between the DC voltage detector 2 and the ground current detector 3, the electrical trigger signal generated from each determination detection unit 22, 32 is converted into an optical trigger signal, and this optical trigger A signal is given from oneself to others other than oneself via an optical transmission system, and the synchronization between the detectors is substantially achieved at a high speed, for example, on the order of nanoseconds.

  Here, the detector that has received the optical trigger signal uses the electro-optical conversion time required to convert the trigger signal to the optical trigger signal, the transmission time in the optical transmission line, and the optical trigger signal in the own detector as the trigger signal. It is determined that the detection time is the same as the past data corresponding to the total time of photoelectric signal conversion time to be converted.

  For example, the delay time required for converting the trigger signal into an optical trigger signal in the electro-optical converters 26, 36, and 46 is a second, and the converted optical trigger signal is optically coupled via the optical transmission lines 28, 38, and 48. The transmission path delay time until it is guided to the optical unit 5 is b1 seconds, and the optical trigger signal guided to the optical coupler 5 is guided to the photoelectric conversion units 27, 37, 47 via the optical transmission paths 28A, 38A, 48A. Assuming that the transmission path delay time until switching is b2 seconds and the delay time required for conversion to an electrical trigger signal in the photoelectric converters 27, 37, 47 is c seconds, the trigger signal from the determination detector of its own detector is The trigger signal transmission time until it is transmitted to the data editing section of other detectors can be calculated as a + b1 + b2 + c (seconds), and a semiconductor element or an optical transmission system constituting the detector circuit is made to meet the specifications. Is possible. For example, a and c can be smaller than nanoseconds. The delay of the optical transmission system is the time required to travel through the optical transmission line at the speed of light, and this can also be a delay of about several tens of nanoseconds assuming a few meters. This time can also be measured in advance.

  At this time, in order to collect a group of time-series data having the meaning of waveform data, it is necessary that the data be in a certain period of time including a time exceeding a threshold value. For example, in the case of inverter noise, the peak voltage at the 1st to 2nd and 3rd cycles from the moment when the current flowing through the inverter element switches from on to off is the highest in the waveform, and after that it is picked from the time when the threshold is exceeded. There is no problem even if the data to be used is used as waveform data, but when the noise at the time of relay on / off is superimposed on the power line, there is a peak voltage in the middle of the waveform of several microseconds in total. For this reason, it is necessary that the time exceeding the threshold be near the center of the data string indicating the waveform. In this case, a data string from a predetermined time before the detection time is transmitted to the data collection device in the temporary storage unit that stores both the detector that has detected the threshold exceeding and the detector that has received the trigger.

  In this case, the optical transmission system includes the electro-optical conversion units 26, 36, 46, the optical transmission paths 28, 38, 48, the optical coupler 5, the optical transmission paths 28A, 38A, 48A, and the photoelectric conversion sections 27, 37, 47. It is. The delay of the normal trigger signal is the sum of the respective times passing through these optical transmission systems, but the electro-optical conversion units 26, 36, 46 and the photoelectric conversion units 27, 37, 47 are about nanoseconds. On the other hand, the optical transmission paths 28, 38, and 48 are expected to be several tens of nanoseconds when assuming a space of 1 to 2 m square such as an electronic device (electronic board). In this embodiment and the following embodiments 2 to 6, it is assumed that the aging of each component constituting the optical path is negligible, and the optical transmission path 28 from the optical coupler 5 to each of the detectors 2, 3, 4, 38, 48 and the optical transmission paths 28A, 38A, 48A are assumed to be uniform in length, and therefore, the optical transmission paths 28, 38, 48 and the optical coupler 5 and the optical coupler 5 and the optical transmission path 28A. , 38A, 48A, the transmission time of any detector 2, 3, 4 can be suppressed to an error of about several nanoseconds or less.

  As described above, in the first embodiment, the time of the data transmitted from each detector 2, 3, 4 is selected by selecting the data at the time obtained by subtracting the delay time of the optical transmission system from the reception time of the internal trigger signal. Can be matched in 10 nanoseconds or less.

  In the first embodiment, the electric signal is not transmitted by wire and the optical transmission paths 28, 38, 48, 28A, 38A, and 48A are used. Therefore, when noise such as electromagnetic waves is generated, the electromagnetic waves are detected via the wires. The possibility of generating 2, 3, 4 malfunctions or erroneous signals can be eliminated.

  According to the first embodiment, data processing is performed between the DC voltage detector 2, the earth current detector 3, and the AC voltage detector 4 which are sparse and have no electric wires, with a high-speed cycle of several nanoseconds to 10 nanoseconds. It is easy to ensure data simultaneity with an accuracy of about 10 nanoseconds between the detectors 2, 3, 4. On the other hand, in conventional data collection systems, when electronic devices are affected by noise from their installation environment, there are various noise factors such as inverter noise, noise due to electrostatic discharge, and induced noise due to switching on / off of the device. There are cases of power lines, ground lines, and air (electromagnetic waves). If you are affected by such noise, you can take measures against the noise by grasping the phenomenon and clarifying the cause and its transmission path, but the detector is not affected by noise during operation (has a wire No). In order to analyze the transmission of the influence of the noise described above, it is necessary to compare the noise waveform with a power supply or an earth line, etc., but they are not sparse, such as a DC voltage detector, earth current detector, AC It has been difficult to ensure data simultaneity with an accuracy of about 10 nanoseconds between detectors that perform data processing at a high-speed cycle of several nanoseconds to 10 nanoseconds between voltage detectors.

[Example 2]
A second embodiment will be described with reference to FIGS.

Since the configuration of the second embodiment is the same as that of the first embodiment shown in FIG. FIG. 6 is a flowchart for explaining the operation of the data editing units 24, 34, and 44 in FIG. The operation of the detector when the environment of the electronic device changes will be described.

  When the physical quantity of the measurement location changes due to electromagnetic noise or the like, the change is measured as digital data by the A / D units 21, 31, 41 and stored in the temporary storage units 23, 33, 43, and the temporary storage units 23, 33. , 43 is determined by the determination detection units 22, 32, 42 to determine whether the physical quantity data stored in 43 exceeds a set threshold value or a series of waveforms of the measured physical quantity data match the reference waveform pattern, When the determination condition is satisfied, an internal trigger signal is transmitted to the data editing units 24, 34, and 44, and the internal trigger signal is transmitted to other detectors as well as the electro-optical conversion units 26, 36, and 46, and the optical transmission lines 28 and 38. , 48, optical coupler 5, optical transmission lines 28A, 38A, 48A, and photoelectric converters 27, 37, 47 are sequentially transmitted. If the external trigger signal obtained by satisfying the determination criteria from the determination detectors 22, 32, 42 from other detectors arrives via the optical transmission paths 28A, 38A, 48A, the optical signal is The data editing unit 24, 34, 44 receives the data via the converters 27, 37, 47.

  The data editing units 24, 34, and 44 determine whether or not the trigger is generated by the self-detector (S1). In the case of a trigger signal from the self-detector, the wireless communication circuit unit transmits data for a predetermined time from the detection time. 25, 35, and 45 are transmitted to the data collection device 6 (S4). If the external trigger signal arrives from other detectors instead of the trigger signal generated by the self-detector, a certain amount of time will be derived from the time data obtained by subtracting the optical transmission system delay time predicted in advance from that time. Data is transmitted to the data collection device 6 by the wireless communication circuit units 25, 35, 45 (S5).

(effect)
According to the second embodiment described above, data for a certain period of time is transmitted to the data collection device 6 to display or compare data as “waveform” on the data collection device 6 as compared with the first embodiment. There is an effect that it becomes possible to.

[Example 3]
Embodiment 3 will be described with reference to FIGS. 1 and 7.

Since the configuration of the third embodiment is the same as that of the first embodiment shown in FIG. 1, the description thereof is omitted here. FIG. 7 is a flowchart for explaining the operation of the data editing units 24, 34, and 44 of FIG. The operation of the detector when the environment of the electronic device changes will be described.

  When the physical quantity of the measurement location changes due to electromagnetic noise or the like, the change is measured as digital data by the A / D units 21, 31, and 41 and stored in the temporary storage units 23, 33, and 43, and the value is determined and detected by the determination detection unit. 22, 32, 42 determines whether the determination condition is satisfied. When the determination condition is satisfied, the internal trigger signal is transmitted to the data editing units 24, 34, 44 and the internal trigger signal is transmitted to another detector. In addition, the data is transmitted via the electro-optical conversion units 26, 36 and 46.

  When an external trigger signal arrives from the determination detectors 22, 32, 42 of other detectors via the optical transmission lines 28, 38, 48, the optical coupler 5, and the optical transmission lines 28A, 38A, 48A, The trigger signal (optical signal) is received by the data editing units 24, 34, 44 via the photoelectric converters 27, 37, 47.

[Example 4]
A fourth embodiment will be described with reference to FIGS.

8 is provided with an AC voltage detector 4A having a function described below instead of the AC voltage detector 4 of FIG. The AC voltage detector 4A is obtained by adding a counter circuit unit 49 having a function to be described later to the AC voltage detector 4 of FIG. 1 and providing a data editing unit 44A having the function described below. The DC voltage detector 2 and the ground current detector 3 other than the AC voltage detector 4A are each provided with a counter circuit portion as in the counter circuit portion 49 of FIG. 8, but these are omitted in FIG. In FIG. 8, the same reference numerals as those in FIG. 1 have the same functions as those in FIG.

  As shown in FIG. 8, a counter circuit unit 49 is connected to the data editing unit 44A to exchange data with the data editing unit 44. The counter circuit unit 49 used here counts clock pulses within a certain period, and is, for example, an increment counter. When the counter value reaches a full count, the counter circuit unit 49 starts from 0 next. Such a counter circuit section is also provided in other detectors, for example, the DC voltage detector 2 and the ground current detector 3 in FIG. The counter circuit unit 49 provided in the detector 4A and the other counter circuit units are configured to operate at the same frequency, but the counter circuit unit of each detector is asynchronous, and each counter circuit Among the units, the counter circuit unit 49 included in a specific detector, for example, the AC voltage detector 4A, outputs a time synchronization signal when the count value becomes zero.

  Except for the configuration described above, the configuration is the same as that shown in FIG. That is, an analog-digital conversion unit 41 that takes in an analog physical quantity to be measured and converts it into digital data, and whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern. When the determination detection unit 42 that determines and outputs the internal trigger signal when the determination condition is satisfied, the temporary storage unit 43 that temporarily stores the measured physical quantity data for a certain period of time, and the trigger signal from the determination detection unit is captured A data editing unit 44A that transmits the data stored in the temporary storage unit 43 to the data collection device 6 and outputs the count value of the counter circuit unit 49 to another detector other than itself, and a counter of a specific detector An electro-optic conversion unit (EO) 46A that converts the count value from the circuit unit into an optical signal, and counter counters of other detectors other than the specific detector It comprises optical-electrical converter for converting an electrical signal and (OE) 47A, a count value from the parts. Then, the internal trigger signal of the determination detection unit included in the specific detector and the count value from the counter circuit unit included in the specific detector are converted into an optical signal by the electro-optical conversion unit, and the converted optical signal is optically transmitted. The collected optical signal is collected to the photoelectric conversion unit of the other detector, or from the external trigger signal of the determination detection unit included in the other detector and the counter circuit unit included in the other detector. The count value is converted into an optical signal by the electro-optical conversion unit, and the converted optical signal is collected via an optical transmission line, and the collected optical signal is collected in the photoelectric conversion unit of the specific detector, respectively. An optical coupler 5 for distribution is provided.

  In such a configuration, when the data editing unit included in the specific detector detects the internal trigger signal generated from the determination detection unit included in the specific detector, the data stored in the temporary storage unit is An electrical / optical conversion unit, optical transmission path, optical coupler, optical transmission path, photoelectrical power, which is transmitted to the data collection device and has the time synchronization signal output from the counter circuit unit of the specific detector in the specific detector When the data editing unit of the detector other than the specific receives via the optical transmission system composed of the conversion unit, the detection other than the specific corresponding to the delay time due to the signal transmission delay by passing through the optical transmission system The data at the same time obtained by each detector can be collected in the data collection device by restarting the count value of the counter circuit unit included in the detector as the initial value of the counter circuit unit of the detector other than the specific one Is a Unishi was data collection system.

  Next, the operation of the fourth embodiment configured as described above will be described with reference to the processing flow of the data editing unit in FIG. First, a description will be given of synchronization between the counter circuit unit 49 included in the AC voltage detector 4 and the counter circuit unit included in another detector. The counter circuit unit 49 and the counter circuit units included in the other detectors 2 and 3 are all increment counters, and operate on the premise that when the counter reaches a full count, the next is to start from 0. explain.

  In (S20) of FIG. 9, it is determined whether or not the signal is detected on the self-detector side. When the signal is detected by the self-detector, the self (self-detector) is the clock master and the counter circuit unit 49 It is determined whether it is a time synchronization signal (0 time signal) (S8). If YES in S8, a “0 time signal” is output to the other detectors via the electro-optical converter 46A.

  In S8 described above, if the user is not the clock master or is not the 0 time signal from the counter circuit unit 49, the process proceeds to the next S10, where is the threshold detection from the determination detection unit detected? Judging. In addition, when the signal detection is not the self-detection in S20 (NO in the determination of S20), it is determined whether the signal is a zero time signal from another detector, or exceeds the threshold value from another detector (or waveform pattern match detection). (S13). If the time signal is 0 at S13, the counter circuit section of the self-detector is set to the initial value and restarted (S14). The initial value in this case is a counter value corresponding to a transmission delay time in which the 0 time signal from the clock master is transmitted via the optical transmission system.

  In the example of the fourth embodiment, the synchronization of the counter circuit unit 49 is performed every time 0 is detected by a detector which is a clock master, but may be synchronized once every several times within a range of accuracy.

  Next, the operation of the physical quantity data measured when the determination condition is satisfied by the determination detection unit of the detector will be described.

  When the determination condition is satisfied by the determination detection unit of the self-detector in (S10) of FIG. 9, the data at the detection time that satisfies the determination condition is transmitted from the wireless communication circuit unit 45 to the data collection device 6 of FIG. At the same time (S11), the counter value of the counter circuit unit 49 indicating the detection time that satisfies the determination condition is transmitted to the other detectors via the electro-optical conversion unit 46A.

  Further, when the determination detection unit of the other detector determines whether the determination condition is satisfied, and the counter value of the counter circuit unit 49 indicating the time when the determination condition is satisfied is received via the photoelectric conversion unit 46A (The flow to the side exceeding the threshold in S13), the time data indicated by the counter value of the counter circuit unit 49 is transmitted from the wireless communication circuit unit 45 to the data collection device 6 (S15).

  The above description is made on the assumption that the counter value of the counter circuit unit 49 is sent to another detector as an optical signal. However, if the transmission capacity of the wireless communication system permits, the transmission is made via the wireless communication circuit unit 45. May be. In the first to third embodiments described above, since only the trigger signal is converted in the electro-optical conversion unit and the photoelectric conversion unit, a simple configuration is preferable. However, the electro-optical conversion unit 46A and the photoelectric conversion unit 47A of the fourth example are preferred. Since it converts the trigger signal and the counter value of the counter circuit unit 49, it becomes more complicated than the first to third embodiments.

(effect)
According to the fourth embodiment described above, the counter values of all the counter circuit units included in each detector can be set to the same value at a certain moment.

  In the description of the first to third embodiments described above, it is assumed that the data of other detectors are handled as relative times with respect to the trigger detection time. A counter circuit unit having a clock function is provided inside, and the count value of the counter circuit unit of the detector other than the master is accurately synchronized between each detector at the time of the count value of a specific master detector. This allows each detector to handle the same time data.

  In that case, the counter circuit unit included in each detector has a high-speed counter circuit unit (clock) that operates at a common frequency, outputs a counter reset time synchronization signal from the clock master, and other detectors other than the master Is a method of receiving a time synchronization signal and setting the delay of the optical transmission system of the signal as an initial value at the time of counter reset. In a data collection system having this method, the detector that the detection detection unit of each detector detects that the threshold value has been exceeded informs the other detectors of the counter value as the time, and the other detectors informed of the counter value The data in the self-detector corresponding to is adopted as data at the same time. When a meaningful data string is handled as waveform data, it is possible to adopt a data string from a time before a certain time from the counter value.

[Example 5]
A fifth embodiment will be described with reference to FIGS.

  Since the configuration of the fifth embodiment is the same as that described in FIG. 8, the description thereof is omitted here. The difference from the fourth embodiment is that the count value of the counter circuit section of the detector that has detected the internal trigger signal when the internal trigger signal generated from the determination detection section of the detector is detected is represented by the internal trigger signal. A detector other than the detector that detects the internal trigger signal through the optical transmission path, the optical coupler, and the optical transmission path after being converted into an optical signal by the electro-optical conversion unit of the detector that has detected the Is converted into an electrical signal by the photoelectric conversion unit, and is temporarily stored in a predetermined number of the temporary storage units from a time corresponding to a count value of a counter circuit unit included in a detector that does not generate the internal trigger signal. The data collection device can collect the read data and the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal. And a data collection system.

  Also, (S20), (S8), (S9), (S10), (S16), (S13), and (S14) in FIG. 10 are the same as those in FIG. 9, and the method for synchronizing the counter circuit unit 49 indicated by them is described. Is omitted. Next, the operation when the physical quantity data (input signal) satisfies the determination condition of the determination detection unit will be described.

  If the determination detection unit of the self-detector satisfies the determination condition in (S10) of FIG. 10, the data stored in the temporary storage unit 43 for a certain time from the detection time is transferred from the wireless communication circuit unit 45 to the data. While transmitting to the collection apparatus 6 (S16), the counter value of the counter circuit unit 49 indicating the detection time is transmitted to the other detectors via the electro-optical converter (46A) (S12).

  When the determination detection unit of the other detector determines that the determination condition is satisfied, the counter value of the counter circuit unit 49 indicating the time is received via the photoelectric converter 47A (threshold value in S13). The flow to the excess side) is transmitted from the wireless communication circuit unit 45 to the data collection device 6 for a predetermined time from the data indicated by the counter value (S17).

  In the case of the fifth embodiment described above, the description has been made on the assumption that the counter value of the counter circuit unit 49 is sent to another detector as an optical signal. However, if the transmission capacity of the wireless communication system permits, the wireless communication circuit You may transmit via the part 45. FIG. In the above-described first to third embodiments, since only the trigger signal is converted by the electro-optical conversion unit and the photoelectric conversion unit, a simple configuration is preferable. However, the electro-optical conversion unit 46A and the photoelectric conversion unit 47A of the fifth example are preferred. Since it converts the trigger signal and the counter value of the counter circuit unit 49, it becomes more complicated than the first to third embodiments.

The fifth embodiment described above can be similarly implemented as follows. The difference from Example 4 is that
When the internal trigger signal generated from the determination detection unit among the detectors is detected, the count value of the counter circuit unit of the detector that detected the internal trigger signal at the time is detected by the detector that detected the internal trigger signal. The photoelectric conversion unit which converts the optical signal into an optical signal in the electro-optical conversion unit and has a detector other than the detector that detects the internal trigger signal via the optical transmission path, the optical coupler, and the optical transmission path. Read out the data temporarily stored in a certain number of the temporary storage units from the time corresponding to the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal, Data collection that enables the data collection device to collect the read data and the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal It is a stem.
(Effect) According to the fifth embodiment described above, data as a “waveform” is displayed on the data collecting device 6 by transmitting data for a predetermined time to the data collecting device 6 as compared with the fourth embodiment. There is an effect that it becomes possible to compare. This is the same as the effect of the second embodiment over the first embodiment.

[Example 6]
Example 6 will be described with reference to FIGS. 8 and 11.

  Since the configuration of the sixth embodiment is the same as that of the fourth embodiment shown in FIG. 8, the description thereof is omitted here.

The difference from the fourth embodiment is that when the internal trigger signal generated from the determination detection unit of the detector is detected, the count value of the counter circuit unit of the detector that has detected the internal trigger signal at that time is determined as the internal value. The electric signal is converted into an optical signal by the electro-optic conversion unit of the detector that has detected the trigger signal, and the detector other than the detector that has detected the internal trigger signal via the optical transmission path, the optical coupler, and the optical transmission path. The photoelectric conversion unit having the detector converts it into an electrical signal, and a predetermined number of the time from the past fixed time including the time corresponding to the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal. The data temporarily stored in the temporary storage unit is read, and the read data and the count value of the counter circuit unit included in the detector not generating the internal trigger signal are used as the data. Collection device is a data acquisition system capable collected.

  Further, (S20), (S8), (S9), (S10), (S12), (S13), and (S14) in FIG. 11 are the same as the same reference numerals in FIG. Description is omitted.

  Next, the operation when the physical quantity data (input signal) satisfies the determination condition of the determination detection unit will be described. If the determination detection unit of the self-detector satisfies the determination condition in (S10) of FIG. 11, it is stored in a predetermined number of temporary storage units from the detection time to the past fixed time including that time. Is transmitted from the wireless communication circuit unit 45 to the data collection device 6 (S18), and the counter value of the counter circuit unit 49 indicating the detection time is transmitted to the other detectors via the electro-optical converter 46A. (S12).

  In addition, when the determination detection unit of the other detector satisfies the determination condition, when the counter value indicating the time is received via the photoelectric converter (S13), the flow to the threshold value exceeding side) Data stored in a predetermined number of temporary storage units from a predetermined past time including the time indicated by the counter value of the counter circuit unit 49 is transmitted from the wireless communication circuit unit 45 to the data collection device 6 (S19). .

  In the case of the sixth embodiment described above, it is assumed that the counter value of the counter circuit unit 49 is sent to another detector as an optical signal. However, if the transmission capacity of the wireless communication system permits, the wireless communication circuit You may transmit via the part 45. FIG. In the above-described first to third embodiments, since only the trigger signal is converted by the electro-optical conversion unit and the photoelectric conversion unit, a simple configuration is preferable. However, the electro-optical conversion unit 46A and the photoelectric conversion unit 47A of the fifth example are preferred. Since it converts the trigger signal and the counter value of the counter circuit unit 49, it becomes more complicated than the first to third embodiments.

  (Effect) According to the sixth embodiment, when the determination / detection unit of the detector satisfies the determination condition, it often has characteristics of the waveform of the physical quantity data before the detection time. By handling a series of data strings from the past including a certain time, there is an effect that the data collection device 6 makes it easier to grasp the waveform and influence compared to the fifth embodiment. This is the same as the effect of Example 3 on Example 2.

[Example 7]
Example 7 will be described with reference to FIG.

FIG. 12 is a configuration in which a logic analyzer 50 is newly added to the configuration of FIG. 1, and the same parts as those in FIG. In the first to seventh embodiments described above, “the aging of each component constituting the optical transmission system is negligible” and “the length of the optical transmission path 48 from the optical coupler 5 to each of the detectors 2, 3, 4 is The former is assumed to be uniform, but the former is a photoelectric conversion unit, the electro-optical conversion unit is usually an aging component, and the data transmission time transmitted through the optical transmission line 48 is a signal in the optical transmission line 48. This is an example of a mechanism that qualitatively and periodically corrects it.

  In FIG. 12, when the determination detector of the own detector satisfies the determination condition, the photoelectric conversion of the other detector that receives the internal trigger signal (electric trigger signal) output from the determination detector of the own detector. The time to the output electric signal of the unit is qualitatively or periodically measured by the logic analyzer 50, and the “time to travel through the optical path” is corrected by the measured value.

(effect)
According to the seventh embodiment, there is an effect that the error due to the aging of the optical transmission line and the optical transmission system can be reduced.

  12 shows the case where the internal trigger signal of the self-detector is received by the self-detector. However, the measurement by the self-detector to each of the other detectors can be performed by the same principle. Further, although not shown in FIG. 12, when the counter circuit unit 49 as shown in FIG. 8 is provided as an internal configuration of the detector, a measurement method is performed using a counter in the detector instead of an external measuring device such as the logic analyzer 50. But you can.

  The present invention collects data of a plurality of detectors that detect physical quantities of electronic devices in different housings or a data collection system that collects data of a plurality of detectors that detect physical quantities of electronic devices in the same housing. Any data collection system is applicable.

  The present invention uses a plurality of detectors to measure changes in physical quantities such as voltage and current of an electronic device, and transmits the measured physical quantity data to a data collection device by a wireless communication method. The present invention can also be applied to any data collection system that performs data processing.

  The present invention is not limited to the above-described embodiments, and has been described by taking an example in which physical quantity measurement data is converted into digital values by the A / D units 21, 31, 41. Alternatively, the physical quantity measurement data may remain as analog values.

  DESCRIPTION OF SYMBOLS 1 ... Power supply device, 2 ... DC voltage detector, 3 ... Earth current detector, 4 ... AC voltage detector, 5 ... Optical coupler, 6 ... Data collection device, 7 ... Line filter, 21, 31, 41 ... Analog Digital converter unit (A / D unit), 22, 32, 42 ... determination detection unit, 23, 33, 43 ... temporary storage unit, 24, 34, 44 ... data editing unit, 25, 35, 45 ... wireless communication circuit unit , 26, 36, 46, 46A ... electro-optic conversion unit, 27, 37, 47 ... photoelectric conversion unit, 28, 38, 48, 28A, 38A, 48A ... optical transmission line, 49 ... counter circuit unit, 50 ... logic Analyzer 122 ... Ultrasonic microphone 123 ... Current detector 124A ... Digital signal converter 125A ... Data collection unit 126 ... Laptop PC 223 Communication LSI 224 Buffer memory 225 MPU

Claims (12)

A plurality of detectors respectively measure changes in physical quantities such as voltage and current of the electronic device, and transmit the measured physical quantity data to the data collection device by a wireless communication method, and perform data processing in the data collection device. In the data collection system to perform,
Each detector includes a determination detection unit, an electro-optical conversion unit, a photoelectric conversion unit, and a data editing unit,
The determination detection unit is configured to detect whether the measured physical quantity exceeds a threshold value or matches a reference waveform pattern, and outputs an internal trigger signal when the determination condition is satisfied,
The electro-optical conversion unit captures an internal trigger signal from the determination detection unit and converts it into a light trigger signal.
The photoelectric conversion unit takes in an external trigger signal from a detector other than itself and converts the external trigger signal into an electrical trigger signal.
The data editing unit captures the internal trigger signal from the determination detection unit and the external trigger signal from the photoelectric conversion unit, and transmits the measured physical quantity data to the data collection device when the trigger signal is captured. Command output,
The optical trigger signal from the electro-optical conversion unit included in each detector is guided to the optical coupler via the first optical transmission line, and the optical trigger signal guided to the optical coupler is routed via the second optical transmission line. The external trigger signal is obtained by guiding it to the photoelectric conversion unit included in each detector, and the self-detector among the trigger signals captured by the data editing unit of each detector Compared to the generation timing of the internal trigger signal from the determination detection unit, the generation timing of the external trigger signal from the determination detection unit included in other detectors other than the detector is the electro-optic conversion unit. The transmission delay is caused by transmitting to the data editing unit via the first optical transmission line, the optical coupler, the second optical transmission line, and the photoelectric conversion unit. In the data collection device, Data acquisition system for, characterized in that to obtain the data at the same time collected by the detector. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when this determination condition is satisfied When,
A temporary storage unit for temporarily storing the measured data for a certain period of time;
When the internal trigger signal from the determination detection unit is converted into an optical signal, and the optical signal is sent to another detector other than the self through an optical transmission system including a transmission path and an optical coupler. A trigger signal transmission system for transmitting an external trigger signal converted into
When the internal trigger signal from the determination detection unit is captured, the data stored in the temporary storage unit is transmitted to the data collection device and predicted in advance from the time when the external trigger signal from the trigger signal transmission system is captured. A data editing unit that transmits the data stored in the temporary storage unit to the data collection device at a past time obtained by subtracting the transmission time of the optical transmission system, the data collection unit, the data editing unit When the external trigger signal is received, the past data corresponding to the delay time of the trigger signal in the optical transmission line is transmitted from the reception time, and the same time data of each detector with an accuracy of 10 nanoseconds or less A data collection system characterized by collecting data. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and that measure changes in physical quantities such as voltage, current, and electromagnetic waves at that point with a period of nanosecond order and hold data for a certain period of time In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector takes in the measured analog physical quantity, and when this physical quantity changes, an analog-to-digital converter that converts it into digital data;
A determination detection unit that determines whether each of the digital data from the analog-digital conversion unit exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when the determination condition is satisfied;
A temporary storage unit for temporarily storing digital data from the analog-digital conversion unit for a certain period of time;
The internal trigger signal output from the determination / detection unit is captured, and the data stored in the temporary storage unit at the capture time of the internal trigger signal is transmitted to the data collection device, and the trigger signal is detected by another detector. If it is determined that the external trigger signal made in the above, the data stored in the temporary storage unit at the time obtained by subtracting the expected transmission time of the optical transmission path from the detection time when the external trigger signal arrived, A data editing unit to be transmitted to the data collection device;
An electro-optical converter that converts the internal trigger signal from the determination detection unit into an optical signal at a timing when the internal trigger signal is output;
A photoelectric conversion unit that converts an electrical signal into an electrical signal at a timing when an external trigger signal is input from a detection detection unit other than the self-detector;
Internal trigger signals from the electro-optic converter are collected via an optical transmission line, and these signals are distributed to the detectors again via an optical transmission line and the photoelectric converter, or External trigger signals from the electro-optical converters of detectors other than the self are collected via an optical transmission line, and those trigger signals are again transmitted via the optical transmission line and the photoelectric converter. Comprising an optical coupler for distribution to other detectors;
When the data editing unit receives an external trigger signal, the past data corresponding to the delay time of the trigger signal in the optical transmission line is transmitted to the data collection device, and each detection with an accuracy of 10 nanoseconds or less A data collection system characterized by collecting simultaneous data of containers. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when this determination condition is satisfied When,
A temporary storage unit for temporarily storing the measured data for a certain period of time;
When the internal trigger signal from the determination detection unit is converted into an optical signal, and the optical signal is sent to another detector other than the self through an optical transmission system including a transmission path and an optical coupler. A trigger signal transmission system for transmitting an external trigger signal converted into
When the internal trigger signal from the determination detection unit is captured, the data stored in the temporary storage unit is transmitted to the data collection device, and the trigger is started from the time when the external trigger signal from the trigger signal transmission system is captured. A data editing unit that transmits a predetermined amount of data to the data collection device from a past time obtained by subtracting the time required to pass through the signal transmission system; and the data editing unit receives an external trigger signal in the data collection device In this case, data for a predetermined time is transmitted from a past time obtained by subtracting the time required for transmitting the trigger signal in the trigger signal transmission system, and the same time data of each detector with an accuracy of 10 nanoseconds or less. A data collection system characterized by collecting data. Multiple detectors of different types that are arranged in the vicinity of electronic devices and their surroundings, and output physical quantity data that measures changes in physical quantities such as voltage, current, and electromagnetic waves at the places in cycles of the order of nanoseconds. In a data collection system that has a group, collects data detected by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector takes in the measured analog physical quantity, and when this physical quantity changes, an analog-to-digital conversion unit that converts it into a digital data string;
A determination detection unit that determines whether each digital data string from the analog-digital conversion unit exceeds a set value or each waveform matches a reference pattern, and outputs an internal trigger signal when the determination condition is satisfied; ,
When the internal trigger signal from the determination detection unit is captured, the data stored in the temporary storage unit is transmitted to the data collection device, and the trigger is started from the time when the external trigger signal from the trigger signal transmission system is captured. A data editing unit that transmits a predetermined amount of data to the data collection device from a past time obtained by subtracting the time required to pass through the signal transmission system;
An electro-optical converter that converts the internal trigger signal from the determination detection unit into an optical signal at a timing when the internal trigger signal is output;
A photoelectric conversion unit that converts an electrical signal into an electrical signal at a timing when an external trigger signal is input from a detection detection unit other than the self-detector;
Internal trigger signals from the electro-optic converter are collected via an optical transmission line, and these signals are distributed to the detectors again via an optical transmission line and the photoelectric converter, or External trigger signals from the electro-optical converters of detectors other than the self are collected via an optical transmission line, and those trigger signals are again transmitted via the optical transmission line and the photoelectric converter. Comprising an optical coupler for distribution to other detectors;
When the data editing unit receives an external trigger signal, the data transmission unit is configured to transmit a data string for a predetermined time from a past time obtained by subtracting a time required for transmitting the trigger signal in the trigger signal transmission system. A data collection system for collecting the same time data of each of the detectors with an accuracy of 10 nanoseconds or less. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when this determination condition is satisfied When,
A temporary storage unit for temporarily storing the measured data for a certain period of time;
When the internal trigger signal from the determination detection unit is converted into an optical signal, and the optical signal is sent to another detector other than the self through an optical transmission system including a transmission path and an optical coupler. A trigger signal transmission system for transmitting an external trigger signal converted into
When the internal trigger signal from the determination detection unit is captured, the data stored in the temporary storage unit is transmitted to the data collection device, and the trigger is started from the time when the external trigger signal from the trigger signal transmission system is captured. A data editing unit that transmits data stored in the temporary storage unit for a certain period of time from a certain time at a past time obtained by subtracting the time required for transmission of the signal transmission system to the data collection device; and When the data editing unit receives an external trigger signal, the past data corresponding to the delay time of the trigger signal in the optical transmission path is transmitted to the apparatus, and each detector with an accuracy of 10 nanoseconds or less is transmitted. A data collection system characterized by collecting data at the same time. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that has a device group, takes data detected by each detector into a data collection device by wireless communication means, and performs data processing here,
Each detector takes in an analog physical quantity to be measured and converts it into digital data;
A determination detection unit that determines whether the digital data from the analog-digital conversion unit each exceeds a set value, or each waveform matches a reference pattern, and outputs a signal when the determination condition is satisfied;
A temporary storage unit that temporarily stores a digital value from the analog-digital conversion unit for a certain period of time;
The internal trigger signal output from the determination / detection unit is captured, the data stored in the temporary storage unit at the time when the internal trigger signal is captured is transmitted to the data collection device, and the trigger signal is transmitted from another detector. Data stored in the temporary storage unit for a certain period of time in the past, which is obtained by subtracting the time required for transmission of the optical transmission path from the time when the generated external trigger signal is captured, is collected. A data editing section to send to the device;
A data editing section to perform,
An electro-optical conversion unit that outputs an internal trigger signal converted into an optical signal at a timing when the signal from the determination detection unit is input;
A photoelectric conversion unit that outputs an external trigger signal converted into an optical signal at a timing when a signal from a determination detection unit other than the self-detector is input;
Collecting optical trigger signals from the electro-optic converter via an optical transmission line and distributing those signals to the detectors again via an optical transmission line and the photoelectric converter, or Collect optical trigger signals from the electro-optical conversion unit of other detectors other than the self through the optical transmission path, and collect those signals again through the optical transmission path and the photoelectric conversion unit. An optical coupler for distributing to the detectors of
When the data editing unit receives an external trigger signal to the data transmission device, a certain number of data is transmitted from a certain time before the reception time, and each detection with an accuracy of 10 nanoseconds or less A data collection system characterized by collecting simultaneous data of containers. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector takes in an analog physical quantity to be measured and converts it into digital data;
A determination detector that determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when the determination condition is satisfied;
A temporary storage unit for temporarily storing the measured physical quantity data for a certain period of time;
A counter circuit for counting clock pulses within a certain period; and
Data that transmits the data stored in the temporary storage unit to the data collection device when the trigger signal is received from the determination detection unit, and outputs the count value of the counter circuit unit to another detector other than itself The editorial department,
An electro-optical conversion unit that converts a count value from a counter circuit unit of a specific detector into an optical signal;
A photoelectric conversion unit that converts a count value from a counter circuit unit of another detector other than the specific detector into an electrical signal, and
Each of the counter circuit units is configured to operate at the same frequency, but the counter circuit unit of each detector is asynchronous, and the counter circuit included in the specific detector among the counter circuit units The unit outputs a time synchronization signal when the count value reaches 0,
The internal trigger signal of the determination detection unit included in the specific detector and the count value from the counter circuit unit included in the specific detector are converted into an optical signal by the electro-optical conversion unit, and the converted optical signal is converted into an optical transmission line. And the collected optical signal from the photoelectric conversion unit of the other detector or from the external trigger signal of the determination detection unit included in the other detector and from the counter circuit unit included in the other detector. The count value is converted into an optical signal by the electro-optic conversion unit, the converted optical signal is collected via an optical transmission line, and the collected optical signal is distributed to the photoelectric conversion unit of the specific detector, respectively. Comprising an optical coupler,
The data editing unit included in the specific detector transmits the data stored in the temporary storage unit to the data collection device when detecting an internal trigger signal generated from the determination detection unit included in the specific detector. The electrical / optical conversion unit, the optical transmission line, the optical coupler, the optical transmission line, and the optical / electrical signal having the time synchronization signal output from the counter circuit unit of the specific detector in the specific detector. When the data editing unit of the detector other than the specific receives via the optical transmission system composed of the conversion unit, the data other than the specific corresponding to the delay time due to the signal transmission delay through the optical transmission system The data at the same time obtained by each detector by restarting the count value of the counter circuit unit included in the other detector as the initial value of the counter circuit unit of the other detector other than the specific is Data acquisition system is characterized in that to be able to collect the over data collection device. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector takes in an analog physical quantity to be measured and converts it into digital data;
A determination detector that determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when the determination condition is satisfied;
A temporary storage unit for temporarily storing the measured physical quantity data for a certain period of time;
A counter circuit for counting clock pulses within a certain period; and
Data that transmits the data stored in the temporary storage unit to the data collection device when the trigger signal is received from the determination detection unit, and outputs the count value of the counter circuit unit to another detector other than itself The editorial department,
An electro-optical conversion unit that converts a count value from a counter circuit unit of a specific detector into an optical signal;
A photoelectric conversion unit that converts a count value from a counter circuit unit of another detector other than the specific detector into an electrical signal, and
Each of the counter circuit units is configured to operate at the same frequency, but the counter circuit unit of each detector is asynchronous, and the counter circuit included in the specific detector among the counter circuit units The unit outputs a time synchronization signal when the count value reaches 0,
The internal trigger signal of the determination detection unit included in the specific detector and the count value from the counter circuit unit included in the specific detector are converted into an optical signal by the electro-optical conversion unit, and the converted optical signal is converted into an optical transmission line. And the collected optical signal from the photoelectric conversion unit of the other detector or from the external trigger signal of the determination detection unit included in the other detector and from the counter circuit unit included in the other detector. The count value is converted into an optical signal by the electro-optical conversion unit, the converted optical signal is collected via an optical transmission line, and the collected optical signal is distributed to the photoelectric conversion unit of the self-detector. An optical coupler,
When the internal trigger signal generated from the determination detection unit among the detectors is detected, the count value of the counter circuit unit of the detector that detected the internal trigger signal at the time is detected by the detector that detected the internal trigger signal. The photoelectric conversion unit which converts the optical signal into an optical signal in the electro-optical conversion unit and has a detector other than the detector that detects the internal trigger signal via the optical transmission path, the optical coupler, and the optical transmission path. Read out the data temporarily stored in the temporary storage unit at the time corresponding to the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal. The data collection device can collect the data and the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal. Chromatography data collection system. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector takes in an analog physical quantity to be measured and converts it into digital data;
A determination detector that determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when the determination condition is satisfied;
A temporary storage unit for temporarily storing the measured physical quantity data for a certain period of time;
A counter circuit for counting clock pulses within a certain period; and
Data that transmits the data stored in the temporary storage unit to the data collection device when the trigger signal is received from the determination detection unit, and outputs the count value of the counter circuit unit to another detector other than itself The editorial department,
An electro-optical conversion unit that converts a count value from a counter circuit unit of a specific detector into an optical signal;
A photoelectric conversion unit that converts a count value from a counter circuit unit of another detector other than the specific detector into an electrical signal, and
Each of the counter circuit units is configured to operate at the same frequency, but the counter circuit unit of each detector is asynchronous, and the counter circuit included in the specific detector among the counter circuit units The unit outputs a time synchronization signal when the count value reaches 0,
The internal trigger signal of the determination detection unit included in the specific detector and the count value from the counter circuit unit included in the specific detector are converted into an optical signal by the electro-optical conversion unit, and the converted optical signal is converted into an optical transmission line. And the collected optical signal from the photoelectric conversion unit of the other detector or from the external trigger signal of the determination detection unit included in the other detector and from the counter circuit unit included in the other detector. The count value is converted into an optical signal by the electro-optical conversion unit, the converted optical signal is collected via an optical transmission line, and the collected optical signal is distributed to the photoelectric conversion unit of the self-detector. An optical coupler,
Among the detectors, the count value of the counter circuit unit of the detector that has detected the internal trigger signal at the time when the internal trigger signal generated from the determination detection unit is detected is the value of the detector that has detected the internal trigger signal. The photoelectric conversion unit which converts the optical signal into an optical signal in the electro-optical conversion unit and has a detector other than the detector that detects the internal trigger signal via the optical transmission path, the optical coupler, and the optical transmission path. Read out the data temporarily stored in a certain number of the temporary storage units from the time corresponding to the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal, The data collection device can collect the read data and the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal. That data collection system. Multiple types of detection that are arranged in the vicinity of electronic devices and their surrounding multiple measurement points, and output physical quantity data obtained by measuring changes in physical quantities such as voltages, currents, and electromagnetic waves at a period in the order of nanoseconds. In a data collection system that collects data measured by each of these detectors in a data collection device by wireless communication means, and performs data processing here,
Each detector takes in an analog physical quantity to be measured and converts it into digital data;
A determination detector that determines whether the measured physical quantity data exceeds a set value or whether each waveform matches a reference pattern, and outputs an internal trigger signal when the determination condition is satisfied;
A temporary storage unit for temporarily storing the measured physical quantity data for a certain period of time;
A counter circuit for counting clock pulses within a certain period; and
Data that transmits the data stored in the temporary storage unit to the data collection device when the trigger signal is received from the determination detection unit, and outputs the count value of the counter circuit unit to another detector other than itself The editorial department,
An electro-optical conversion unit that converts a count value from a counter circuit unit of a specific detector into an optical signal;
A photoelectric conversion unit that converts a count value from a counter circuit unit of another detector other than the specific detector into an electrical signal, and
Each of the counter circuit units is configured to operate at the same frequency, but the counter circuit unit of each detector is asynchronous, and the counter circuit included in the specific detector among the counter circuit units The unit outputs a time synchronization signal when the count value reaches 0,
The internal trigger signal of the determination detection unit included in the specific detector and the count value from the counter circuit unit included in the specific detector are converted into an optical signal by the electro-optical conversion unit, and the converted optical signal is converted into an optical transmission line. And the collected optical signal from the photoelectric conversion unit of the other detector or from the external trigger signal of the determination detection unit included in the other detector and from the counter circuit unit included in the other detector. The count value is converted into an optical signal by the electro-optical conversion unit, the converted optical signal is collected via an optical transmission line, and the collected optical signal is distributed to the photoelectric conversion unit of the self-detector. An optical coupler,
Among the detectors, the count value of the counter circuit unit of the detector that has detected the internal trigger signal at the time when the internal trigger signal generated from the determination detection unit is detected is the value of the detector that has detected the internal trigger signal. The photoelectric conversion unit which converts the optical signal into an optical signal in the electro-optical conversion unit and has a detector other than the detector that detects the internal trigger signal via the optical transmission path, the optical coupler, and the optical transmission path. To a predetermined number of temporary storage units including a time corresponding to a time corresponding to a count value of a counter circuit unit included in a detector that does not generate the internal trigger signal. The data collection device reads the temporarily stored data, and uses the read data and the count value of the counter circuit unit included in the detector that does not generate the internal trigger signal. Data acquisition system is characterized in that to be able to collect. 13. The data collection system according to claim 1, qualitatively or periodically measuring a difference in time delay due to aged operation delay including the photoelectric conversion unit or bending of an optical transmission line. A data collection system further comprising calibration means for calibrating the transmission time of the optical signal with the value, and maintaining the simultaneity of data synchronization among a plurality of detectors.

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