JP4683857B2 - Simultaneous multipoint measurement system - Google Patents

Description

The present invention relates to a simultaneous multipoint measurement system that records data measured at a plurality of measurement bases in time synchronization.

This type of simultaneous multipoint measurement system allows each data from a plurality of detection means provided on an object to be measured at a plurality of measurement bases to be transmitted to the base station without temporal relevance. Then, since the temporal relevance of each data is not known, the time at which the synchronization signal is superimposed from the base station is transmitted from the base station to each measurement base in advance by communication means and set at each measurement base. The GPS signal is received by the GPS receiver, and when the target time is reached based on the received time signal wave, a synchronization signal is superimposed on each of the data from the detecting means. Thus, by superimposing the synchronization signal at the same time on each of the data, the synchronization signal is superimposed even if there is no temporal relevance to each data itself. It is possible to have a temporal relationship between the data, and the measurement between each data can be performed accurately (see, for example, Patent Document 1).
JP 2000-266626 A (3rd page, 15th paragraph, FIGS. 1 to 5)

However, in the conventional simultaneous multipoint measurement system described above, in order to superimpose the synchronization signal on each data, it is necessary to set in advance the time at which the synchronization signal is superimposed from the base station to each measurement base by communication means. That is, it is necessary to schedule the measurement time in advance when measuring. In addition, at each measurement base, it is necessary to receive the time signal wave from the satellite by the GPS receiver, determine the set time, and at the set time, the signal synthesizer superimposes the synchronization signal on the data There is. That is, when receiving the time signal wave from the satellite at each measurement base by the GPS receiver, it is necessary to obtain current time information sequentially and compare it with the set time to determine whether the set time has come. And the processing at the GPS receiver is complicated. An object of this invention is to provide the simultaneous multipoint measuring system which eliminated such a subject.

In order to achieve the above object, a simultaneous multipoint measurement system according to claim 1 of the present invention transmits measurement data collection at a plurality of measurement bases arranged at points separated from each other from a base station via a communication line. A simultaneous multipoint measurement system that executes based on a measurement start signal and a time signal wave (GPS) from a satellite, wherein the base station generates a simple measurement start trigger signal that does not include a measurement start time as the measurement start signal. It has a measurement start trigger signal generating means to generate, each measurement base,
-Sensor means,
A measurement start trigger signal receiving means for receiving the measurement start trigger signal of the base station,
GPS receiving means for receiving time signal waves from satellites,
A standard pulse signal having a long cycle exceeding at least twice the largest measurement start trigger signal reception time difference among the measurement start trigger signal reception time differences between at least the measurement start trigger signal reception means at each measurement base, and receiving the GPS signal A standard-length pulse signal generating means for outputting a standard-length pulse signal having the same period and time synchronization with that at another measurement base based on the time signal wave received by the means;
Sampling period signal output means for outputting a sampling period signal using a clockmeasurement start trigger signal received by the measurement start trigger signal receiving means, sampling period signal from the sampling period signal output means, sensing data from the sensor means, and Receives the standard length pulse signal generated by the standard length pulse signal generation means, and sequentially collects sensing data at a cycle corresponding to the sampling cycle signal from the time when the measurement start trigger signal is received until at least one cycle time of the standard length pulse signal is exceeded. In addition, the present invention is characterized by comprising data recording means for sequentially recording the sensing data related to collection and the on / off state of the standard length pulse signal at the time of sensing data collection as a pair.

The simultaneous multipoint measurement system according to claim 2 is the simultaneous multipoint measurement system according to claim 1, wherein each measurement base is 1 / shorter than a standard long pulse signal cycle generated by the standard long pulse signal generating means. N (N is an integer other than 1 ) period, which is a standard short pulse signal generated on the basis of the time signal wave received by the GPS receiving means, the rise (or fall) time of the standard short pulse signal (Or fall) Standard short pulse signal generating means for generating a standard short pulse signal synchronized with time is provided, and the standard short pulse signal generated by the standard short pulse signal generating means is input to the data recording means. The data recording means sequentially collects the sensing data at a period corresponding to the sampling period signal, and the sensing data related to the collection, the sensing data It is characterized in that it has adapted to sequentially record the on-off state of the standard length pulse signals and standard short pulse signal collection time as pairs.

  The simultaneous multipoint measurement system of the present invention according to claim 1 is configured to receive a measurement start trigger signal by a measurement start trigger signal generation means from a base station at each measurement base by a measurement start trigger signal reception means, and generate a standard length pulse signal. A standard length pulse signal is output based on the time signal wave from the satellite received by the GPS receiving means by the means, the sensing data is detected by the sensor means, and the sampling period signal is output using the clock by the sampling period signal output means, The measurement start trigger signal, sampling cycle signal, sensing data, and standard length pulse signal are received by the data recording means, and from the time when the measurement start trigger signal is received, at least one cycle time of the standard length pulse signal is exceeded. Collecting sensing data sequentially in the corresponding cycle And, and, in which sequentially records the on-off state of the standard length pulse signals of the sensing data and the sensing data acquisition time according to the collection as a pair.

  That is, since the measurement start at each measurement base is performed from the time when the measurement start trigger signal receiving means receives the measurement start trigger signal generated by the measurement start trigger signal generating means from the base station, There is no need to schedule the measurement time in advance, and measurement can be started from the base station at any time.

  The on / off state of the standard long pulse signal recorded at each measurement site is synchronized with that at other measurement sites based on the time signal wave received by the GPS receiving means and has the same cycle, In addition, the data recorded by the data recording means at each measurement base is such that the sensing data related to the collection and the on / off state of the standard length pulse signal at the time of sensing data collection are sequentially recorded as a pair. Temporal relationships between sensing data at bases can be provided.

A time signal received by the GPS receiving means at a cycle longer than at least twice the largest measurement start trigger signal receiving time difference among the measurement start trigger signal receiving time differences between the measurement start trigger signal receiving means at each measurement base. Based on the wave, the standard pulse signal with the same period is generated by the standard length pulse signal generation means in synchronization with that at other measurement bases, and the GPS reception means receives the time signal wave from the satellite at each measurement base. In doing so, it is not necessary to sequentially determine the current time, and the processing at the GPS receiver can be simplified.

According to a second aspect of the present invention, there is provided a simultaneous multi-point measurement system according to the first aspect of the present invention, wherein each of the measurement bases of the simultaneous multi-point measurement system according to the first aspect is shorter than a standard long pulse signal cycle generated by the standard long pulse signal generating means. / N (N is an integer other than 1), and the rising (or falling) time is synchronized with the rising (or falling) time of the standard length pulse signal based on the time signal wave received by the GPS receiving means. Standard short pulse signal generating means for generating the standard short pulse signal is provided. The data recording means is configured to sequentially record the on / off state of the standard short pulse signal as a pair in addition to the standard long pulse signal at the time of sensing data collection.

  Therefore, the data recorded by the data recording means at each measurement base is sequentially recorded as a pair of the sensing data related to the collection, the standard long pulse signal at the time of sensing data collection, and the on / off state of the standard short pulse signal. Therefore, the time relationship from the rising edge (or falling edge) of the standard long pulse signal can be measured more accurately by using the standard short pulse signal and the sampling period signal to determine the temporal relationship with the sensing data.

  Hereinafter, an embodiment of a simultaneous multipoint measurement system according to the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram for explaining a simultaneous multipoint measurement system according to the present invention, and FIG. 2 is an explanatory diagram for explaining each signal and sensing data at each measurement base in the simultaneous multipoint measurement system according to the present invention. It is. FIG. 3 and FIG. 4 are other explanatory diagrams for explaining each signal and sensing data at each measurement base in the simultaneous multipoint measurement system according to the present invention.

  In FIG. 1, A is a base station, B and C are measurement bases arranged at points separated from each other, and D is a communication line. A measurement start signal is transmitted from the base station A to the measurement bases B and C via the communication line D. The base station A includes measurement start trigger signal generation means 10 and synchronization calculation processing means 12. The measurement start trigger signal generation means 10 is a means for generating a simple measurement start trigger signal that does not include a measurement start time as the measurement start signal, and receives the operation signal from the measurement start operation means 11 and outputs the measurement start trigger signal. generate. The synchronous calculation processing means 12 receives data recorded from the measurement bases B and C, and signals recorded for providing temporal relevance between the sensing data measured at the measurement bases B and C and the sensing data. Is a means for performing arithmetic processing so that each sensing data becomes synchronized data.

  Each measurement base B, C has sensor means 20, measurement start trigger signal receiving means 21, GPS receiving means 22, standard long pulse signal generating means 23, standard short pulse signal generating means 24, sampling period signal output means 25, data recording. Means 26 are provided.

  The sensor means 20 is means for obtaining target sensing data. The measurement start trigger signal receiving means 21 is a receiving means for receiving a measurement start trigger signal output from the measurement start trigger signal generating means 10 of the base station A. The GPS receiving means 22 is means for receiving a time wave signal from the satellite E.

  The standard-length pulse signal generating means 23 is a pulse signal having a long cycle exceeding at least twice the difference in reception time of the start trigger signal received by the measurement start trigger signal receiving means 21 at each of the measurement bases B and C. This is an output means for outputting a standard length pulse signal having the same period and time synchronization with those at the other measurement bases B and C based on the signal wave. That is, the pulse signal having a long cycle exceeding twice the measurement start trigger signal reception time difference between the measurement start trigger signal receiving means 21 at each measurement site B and C is set at each measurement site B and C. When obtaining the relationship of the synchronization time in the measurement data, it is set so that it can be determined from the recorded data whether the rise time shows the same time or one time shifted . For example, this standard long pulse signal outputs an on / off pulse signal at equal intervals of about 4 SEC.

The standard short pulse signal generating means 24 is a standard short pulse signal generated with a 1 / N (N is an integer excluding 1 ) period shorter than the standard long pulse signal period generated by the standard long pulse signal generating means 23, Based on the time signal wave received by the GPS receiving means 22, a standard short pulse signal whose rise (or fall) time is synchronized with the rise (or fall) time of the standard long pulse signal is generated. For example, this standard short pulse signal outputs an on / off pulse signal at equal intervals of about 10 mSEC.

  The sampling cycle signal output unit 25 is a unit that outputs a sampling cycle signal using a clock, and outputs a signal at an interval of about 20 μSEC, for example.

The data recording unit 26 includes a measurement start trigger signal received by the measurement start trigger signal receiving unit 21, a sampling cycle signal from the sampling cycle signal output unit 25, sensing data from the sensor unit 20, and generation of the standard length pulse signal generation unit 23. The standard short pulse signal generated by the standard short pulse signal generating means and the standard short pulse signal generating means are received, and at least one cycle time of the standard long pulse signal is exceeded from the time when the measurement start trigger signal is received. Sensing data is sequentially collected at a period, and the sensing data for collection, the standard long pulse signal at the time of sensing data collection, and the on / off state of the standard short pulse signal are sequentially recorded as a pair. That is, the reason why the measurement is performed until at least one cycle time of the standard long pulse signal is exceeded is to include the standard long pulse indicating the synchronized time in the measured data. Then, the measurement is started from the time when the measurement start trigger signal is received, and at the end of the measurement, the time until at least one cycle time of the standard length pulse signal is exceeded is set by a timer or the like. Therefore, at each measurement base B and C, measurement data that overlaps at least a half of the standard pulse signal period can be recorded.

  In the communication line D, the measurement start signal transmission means 27 is arranged to transmit the measurement start signal from the measurement start trigger signal generation means 10 of the base station A to the measurement bases B and C. The measurement start signal transmission means 27 may be a direct transmission from the base station A to the measurement bases B and C, or a communication means such as wireless, optical, each Internet, and a mobile phone. Good.

  The data recorded by the data recording means 26 at each measurement base B, C is transmitted to the synchronization calculation processing means 12 of the base station A by the data moving means 28. The data moving means 28 may be one that is directly transmitted from the measurement bases B and C to the base station A by wire, or one that uses various communication means such as wireless, optical, each Internet, and a mobile phone. Alternatively, each data recording means 26 may write to various recording media, and the data recorded by the synchronization calculation processing means 12 of the base station A may be read via each recording medium.

  The simultaneous multipoint measurement system according to the present invention configured as described above operates as follows. First, the base station A operates the measurement start operation means 11 to start the measurement. Then, a trigger waveform is output from the measurement start trigger signal generating means 10 to the measurement start trigger signal. The measurement start trigger signal is transmitted by the measurement start signal transmission means 27 to the measurement start trigger signal reception means 21 at each measurement site B and C.

At each measurement base B, C, the measurement start trigger signal receiving means 21 receives the measurement start trigger signal from the base station A. The GPS signal receiving means 22 receives a time signal wave from the satellite. The standard long pulse signal generating means 23 generates a standard long pulse signal based on the time signal wave from the satellite received by the GPS receiving means 22. The standard short pulse signal generating means 24 is 1 / N (N is 1) shorter than the standard long pulse signal period generated by the standard long pulse signal generating means 23 based on the time signal wave received by the GPS receiving means 22. an integer) the period excluding, the rising (or downlink) time, generates a standard short pulse signal synchronized with the rising (or falling) time of the standard length pulse signal. The sampling period signal output means 25 outputs a sampling period signal using a clock. The sensor means 20 detects sensing data sequentially.

  The data recording means 26 outputs a measurement start trigger signal by the measurement start trigger signal receiving means 21, a sampling period signal using a clock by the sampling period signal output means 25, sensing data by the sensor means 20, and a standard length pulse signal generation means 23. The standard long pulse signal, the standard short pulse signal output from the standard short pulse signal generating means 24, and the trigger waveform of the measurement start trigger signal is received until at least one cycle time of the standard long pulse signal is exceeded. Sensing data is sequentially collected at a period corresponding to the sampling period signal, and the sensing data related to the collection and the on / off state of the standard long pulse signal and the standard short pulse signal at the time of sensing data collection are sequentially recorded as a pair.

  That is, each signal and sensing data at the measurement base B and the measurement base C will be described based on the time axis common to FIG. In FIG. 2, a is a measurement start trigger signal received by the measurement start trigger signal generating means 21 of the measurement base B, and a0 is a measurement start trigger signal generated when the measurement start operating means 11 of the base station A is operated. The state which received the trigger waveform generated by the means 10 is shown. b is a measurement start trigger signal received by the measurement start trigger signal generation means 21 at the measurement base C, and b0 is generated by the measurement start trigger signal generation means 10 when the measurement start operation means 11 of the base station A is operated. The state where the triggered waveform is received is shown. Compared with the trigger waveform a0, the trigger waveform b0 is slightly delayed in the time axis. This indicates that there is a difference between the time until the trigger waveform generated by the measurement start trigger signal generating means 10 of the base station A is transmitted to the measurement base B and the time until the trigger waveform is transmitted to the measurement base C. Yes.

  c is a standard length pulse signal generated by the standard length pulse signal generation means 23 at the measurement site B, and is a pulse signal that repeatedly turns on and off at regular intervals of 4 SEC, for example. d is a standard length pulse signal generated by the standard length pulse signal generation means 23 at the measurement site C, and is a pulse signal that repeatedly turns on and off at regular intervals of 4 SEC, for example. The standard length pulse signal c and the standard length pulse signal d are generated based on the time signal wave from the satellite E, are time synchronized and have the same cycle.

e is a standard short pulse signal generated by the standard short pulse signal generating means 24 at the measurement site B, and is 1 / N (N is a period of the standard long pulse signal c generated by the standard long pulse signal generating means 23). Raises an integer) the period but one, the rising (or falling) time based on the time signal waves the GPS receiving unit 22 receives, in synchronism with the rise of the standard length pulse signal c (or falling) time Generate a standard short pulse signal. For example, this standard short pulse signal is a pulse signal that repeatedly turns on and off at equal intervals of 10 mSEC.

  f is a standard short pulse signal generated by the standard short pulse signal generating means 24 at the measurement site C, and is 1 / N (N is a period of the standard long pulse signal d generated by the standard long pulse signal generating means 23). A standard short pulse that is generated in an integer) cycle and whose rise (or fall) time is synchronized with the rise (or fall) time of the standard long pulse signal d based on the time signal wave received by the GPS receiving means 22 Generate a signal. For example, this standard short pulse signal is a pulse signal that repeatedly turns on and off at equal intervals of 10 mSEC.

  Note that the standard short pulse signal e and the standard short pulse signal f shown in FIG. 2 are described as being 1/14 cycles with respect to one cycle of the standard long pulse signal c and the standard long pulse signal d. Is generated in a period of 1/400.

  g is a sampling period signal using the clock of the measurement site B, and a signal is generated at intervals of 20 μSEC. Similarly, h is a sampling period signal using the clock of the measurement site C, and a signal is generated at intervals of 20 μSEC. Note that the sampling period signal g and the sampling period signal h illustrated in FIG. 2 are indicated by dots, but in actuality, numbers that are not indicated by dots are generated.

  i is the sensing data measured by the sensor means 20 of the measurement base B, and j is the sensing data measured by the sensor means 20 of the measurement base C.

  Such signals and sensing data are recorded by the data recording means 26 at the measurement site B as follows. That is, the sensing data i is sequentially collected at a period corresponding to the sampling period signal g from the time when the trigger waveform a0 of the measurement start trigger signal a is received, and the sensing data i related to the collection and the standard at the time of sensing data collection are collected. The on / off states of the long pulse signal c and the standard short pulse signal e are sequentially recorded as a pair.

  Similarly, the data is recorded in the data recording means 26 at the measurement site C in the same manner. That is, the sensing data j is sequentially collected at the period corresponding to the sampling period signal h from the time when the trigger waveform b0 of the measurement start trigger signal b is received, and the sensing data j related to the collection and the standard at the time when the sensing data is collected The ON / OFF state of the long pulse signal d and the standard short pulse signal f is sequentially recorded as a pair.

  The data thus recorded is transmitted to the synchronization calculation processing means 12 of the base station A through the data moving means 28. The synchronous calculation processing means 12 performs synchronous calculation processing on the data sent from the measurement base B and measurement base C as follows. That is, the sampling period Ta (the number of samplings) from the time when the trigger waveform a0 of the measurement start trigger signal a is received to the next point c0 when the pulse of the standard length pulse signal c rises, and the trigger waveform of the measurement start trigger signal b The sampling period Tb (the number of samplings) from when b0 is received to the point d0 at which the pulse of the standard length pulse signal d rises next is compared.

  For example, as shown in FIG. 2, when −T / 2 ≦ Ta−Tb ≦ T / 2, c0 and d0 are determined as the same time, and the temporal relationship between the measurement base B and the measurement base C is given.

Next, as shown in FIG. 3, when Ta−Tb = Ta−Tb1 <−T / 2 (that is, Tb receives the trigger waveform b1 of the measurement start trigger signal b, then the standard long pulse is received. The point c0 where the pulse of the standard length pulse signal c rises and the point d1 where the pulse of the standard length pulse d rises when the sampling period Tb1 (the number of samplings) until the point d1 where the pulse of the signal d rises) The rising point of time is determined, and at measurement base B, c0 is assumed, and at measurement base C, point d0 that rises one cycle ahead of d1 is hypothesized, and this point is given temporal relevance as the same time. (It is determined that c0 and d1-T = d0 are the same time.)
Further, as shown in FIG. 4, when Ta−Tb = Ta1−Tb> T / 2 (that is, Ta receives the trigger waveform a1 of the measurement start trigger signal a and then the standard length pulse signal c When the sampling period Ta1 (the number of samplings) up to the point c1 at which the first pulse rises), the point b0 at which the pulse of the standard length pulse signal b rises and the point a1 at which the pulse of the standard length pulse signal a rises are different times. The measurement base C is assumed to be d0, and the measurement base B is assumed to be a point c0 that rises one cycle ahead of c1, and this point is given temporal relevance as the same time. (D0 and c1-T = c0 are determined to be the same time.)
Next, the data recorded by the data recording means 26 at each of the measurement bases B and C is sequentially recorded as a pair of the sensing data related to collection and the on / off state of the standard short pulse signal at the time of sensing data collection. Therefore, if the time from the rise (or fall) of the standard long pulse signal is processed using the standard short pulse signal and the sampling period signal, the temporal relationship with the sensing data can be more accurately determined. Arithmetic processing can be performed so as to have.

  Note that it is not always necessary to use the standard short pulse signal, and the time from the rise (or fall) of the standard long pulse signal may be calculated using only the sampling period signal. In this case, the accuracy is somewhat lower than when a standard short pulse signal is used.

  As described above, the measurement at each measurement base is started from the time when the measurement start trigger signal receiving means 21 receives the measurement start trigger signal generated by the measurement start trigger signal generating means 10 from the base station A. Therefore, there is no need to schedule the measurement time in advance, and measurement can be started from the base station at any time.

  And based on the time signal wave received by the GPS receiving means 22 with a long period exceeding at least twice the measurement start trigger signal receiving time difference between the measurement start trigger signal receiving means 21 at the measurement bases B and C. A standard pulse signal having the same period as that at the measurement site and having the same period is generated by the standard length pulse signal generation unit 23, and the GPS signal reception unit 22 receives the time signal wave from the satellite at each measurement site B and C. In doing so, it is not necessary to sequentially determine the current time, and the processing at the GPS receiver can be simplified.

  In the above embodiment, the rising point of the standard long pulse signal is used as the synchronization reference, but the falling point may be used as the synchronization reference.

  In the above embodiment, the case where the two measurement bases B and C are provided has been described. However, it is needless to say that a plurality of measurement bases having the same configuration may be provided and measured. In this case, at least another measurement is performed based on the time signal wave received by the GPS receiving means 22 with a long period exceeding twice the measurement start trigger signal receiving time difference between the measurement start trigger signal receiving means 21 at each measurement base. It is necessary to generate the standard pulse signal having the same period as that at the base and the standard pulse signal generator 23 having the same cycle. In this way, it is possible to find the rising (or falling) point of the standard length pulse signal with which the trigger waveform of the measurement start trigger signal a is synchronized.

  Further, the base station and one measurement base may be the same base and each configuration may be provided.

  In the simultaneous multipoint measurement system of the present invention, for example, data from water leakage sensors arranged at appropriate intervals on the water pipe can be recorded with time relevance, so that the water pipe can be recorded based on the recorded data. It can be used to find out where the water leaks from.

It is explanatory drawing explaining the simultaneous multipoint measuring system which concerns on this invention. It is explanatory drawing explaining each signal and sensing data in each measurement base in the simultaneous multipoint measurement system which concerns on this invention. It is another explanatory drawing explaining each signal and sensing data in each measurement base in the simultaneous multipoint measurement system concerning the present invention. It is another explanatory drawing explaining each signal and sensing data in each measurement base in the simultaneous multipoint measurement system concerning the present invention.

A base station B measurement base C measurement base 10 measurement start trigger signal generation means 20 sensor means 21 measurement start trigger signal reception means 22 GPS reception means 23 standard long pulse signal generation means 24 standard short pulse signal generation means 25 sampling period output means 26 Data recording means

Claims (2)

Simultaneous multi-point measurement system that performs measurement data collection at multiple measurement bases arranged at points separated from each other based on a measurement start signal transmitted from a base station via a communication line and a time signal wave (GPS) from a satellite Because
The base station comprises a measurement start trigger signal generating means for generating a simple measurement start trigger signal not including a measurement start time as the measurement start signal,
Each measurement base is
-Sensor means,
A measurement start trigger signal receiving means for receiving the measurement start trigger signal of the base station,
GPS receiving means for receiving time signal waves from satellites,
A standard pulse signal having a long cycle exceeding at least twice the largest measurement start trigger signal reception time difference among the measurement start trigger signal reception time differences between at least the measurement start trigger signal reception means at each measurement base, and receiving the GPS signal A standard-length pulse signal generating means for outputting a standard-length pulse signal having the same period and time synchronization with that at another measurement base based on the time signal wave received by the means;
・ Sampling period signal output means that outputs sampling period signal using clock ・ Measurement start trigger signal received by measurement start trigger receiving means, sampling period signal from sampling period signal output means, sensing data from sensor means, and standard Receives the standard long pulse signal generated by the long pulse signal generator, and sequentially collects the sensing data at a cycle corresponding to the sampling cycle signal from the time when the measurement start trigger signal is received until at least one cycle time of the standard long pulse signal is exceeded. And data recording means for sequentially recording the sensing data related to collection and the on / off state of the standard length pulse signal at the time of sensing data collection as a pair,
A simultaneous multi-point measurement system characterized by having it configured. Each measurement base has a standard short pulse signal generated at a 1 / N (N is an integer excluding 1 ) cycle shorter than the standard long pulse signal cycle generated by the standard long pulse signal generating means, and the GPS reception Standard short pulse signal generating means for generating a standard short pulse signal in which the rising (or falling) time is synchronized with the rising (or falling) time of the standard long pulse signal based on the time signal wave received by the means And
The standard short pulse signal generated by the standard short pulse signal generating means is input to the data recording means, and the data recording means sequentially collects sensing data at a period corresponding to the sampling period signal and 2. The simultaneous multipoint measurement system according to claim 1, wherein the sensing data, the standard long pulse signal at the time of sensing data collection, and the on / off state of the standard short pulse signal are sequentially recorded as a pair.

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