JPH09288174A - Wireless data collection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data collection device capable of discriminating quality of measured data at the side of a transponder by taking in the measured data input from the outside and discriminating the normal state or the abnormal state of the measured data on the basis of a stored reference value. SOLUTION: At first, an interrogator 50 previously writes in a reference value for the reference value storage circuit 13 of a transponder 51a as initial setting. The transponder 51a stores the measured data from a sensor circuit 12a or the like to a fetched storage processing circuit 14 by starting by an interrogation wave from the interrogator 50 or by periodical starting by a start circuit 11. The storage processing circuit 14 compares stored measured data with the reference value of a reference value storage circuit 13 to judges whether they are within a range of the reference value and performs judgement of a normal state or an abnormal state. The interrogator 50 receiving these shows the normal state or the abnormal state on a display 6. The reference value need not be previously stored by previously storing the reference value to the transponder 51a, and abnormality diagnosis or the like for an arbitrary transponder can be carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless data collecting device for collecting data of devices by wireless, and more particularly to a wireless data collecting device capable of judging an abnormality in a measuring range on the responder side.

[0002]

2. Description of the Related Art A conventional wireless data collecting device collects an output signal of a sensor circuit attached to a device or the like by an interrogator via a responder. FIG. 2 is a configuration block diagram showing an example of such a conventional wireless data collection device.

In FIG. 2, 1 is an oscillator, 2 and 10 are modulators, 3 and 4 and 7 are antennas, 5 is a demodulator, 6 is a display, 8 is a detector, 9 is a control circuit, 11 is a timer, etc. The starting circuits used and 12a and 12b are sensor circuits. Further, 1 to 6 constitute an interrogator 50, and 7 to 11 constitute a responder 51.

In the interrogator 50, the output of the oscillator 1 is connected to the modulator 2, and the output of the modulator 2 is connected to the antenna 3. The output of the antenna 4 is connected to the demodulator 5, and the output of the demodulator 5 is connected to the display 6.

On the other hand, in the responder 51, the output of the antenna 7 is connected to the detector 8, and the output of the detector 8 is connected to the control circuit 9. The output of the control circuit 9 is connected to the modulator 10, and the output of the modulator 10 is connected to the antenna 7.

A starting circuit 11 is connected to the control circuit 9 and outputs of the sensor circuits 12a and 12b connected to the outside are connected to the control circuit 9.

The operation of the conventional example shown in FIG. 2 will be described. The interrogator 50 is battery-powered because it is carried by a patroller, and the interrogator 50 generates an interrogation wave by amplitude-modulating the output signal of the oscillator 1 by the modulator 2, and transmits the interrogation wave to the responder 51.

The responder 51 receives the interrogation wave at the antenna 7, detects it at the detector 8, and outputs it to the control circuit 9. The control circuit 9 obtains the data, the command, etc. sent from the interrogator 50, and appropriately processes the data according to the command and the like.

For example, the sensor circuit 12 connected to the outside
In the case of a command for reading the measurement data from a, the output data of the sensor circuit 12a is taken into the control circuit 9.

At this time, the interrogator 50 transmits the output signal of the oscillator 1 as it is to the responder 51 as an unmodulated interrogation wave. The transponder 51 drives the modulation circuit 10 based on the output data that has been taken in, and in the antenna 7, BPSK (binary phase shift keying) for the unmodulated interrogation wave.
It is modulated and reflected as a response wave toward the interrogator 50.

Again, the interrogator 50 uses the BP from the responder 51.
The SK-modulated response wave is received by the antenna 4, and the demodulator 5
Then, the content of the response wave is demodulated and the output data of the sensor circuit 12a is displayed on the display 6 as appropriate.

Further, the starting circuit 11 periodically starts the control circuit 9 and the like based on the cycle data preset by the control circuit 9 regardless of the presence or absence of the interrogation wave, and measures the output data of the sensor circuit 12a and the like at regular intervals. Then, the interrogator 50 is stored by storing it in a storage circuit (not shown) in the control circuit 9.
It becomes possible to supply the measurement data at regular intervals.

[0013]

However, in the case of determining whether the measured value measured by the sensor circuit is within the reference range in the conventional wireless data collection device, after collecting the data in the interrogator 50, the interrogator 50 is used. It was carried out by comparing with a reference value stored in advance in 50.

Therefore, it is necessary to store each reference value data in the interrogator 50 in advance before the tour. Further, there is a problem that the number of reference value data stored in the interrogator 50 increases as the number of circulation points increases, and the usable storage capacity in the interrogator 50 decreases.

Further, the sensor circuit 1 using the starting circuit 11
When the output data such as 2a was measured at regular intervals, there was no way to know whether the measured data was within the reference value range until the interrogator 50 collected the accumulated data from the responder 51.

When the measured data deviates from the reference value, the measuring interval is generally shortened to observe an abnormal state. The interrogator 50 collects the accumulated data from the responder 51. There was a problem that the measurement interval could not be changed until then. Therefore, the problem to be solved by the present invention is to realize a wireless data collecting device capable of judging the quality of measured data on the responder side.

[0017]

In order to achieve such a object, in the first aspect of the present invention, an interrogator and a response that modulates an interrogation wave from this interrogator based on data and reflects it as a response wave. In a wireless data collection device including a detector, an antenna that receives the interrogation wave and reflects the response wave, a detector that detects the interrogation wave, and measurement data that is input from the outside and is stored. A response unit including a control unit that determines a normal state or an abnormal state of the measurement data based on a reference value that is present, and a modulator that modulates the interrogation wave based on the output of the control unit. It is what

In order to achieve such a subject, in the second aspect of the present invention, the measurement data input from the outside at a constant interval by the starting circuit in the first aspect of the present invention is accumulated, and based on the trend of the measurement data. It is characterized in that it comprises control means for varying the activation interval of the activation circuit.

In order to achieve such a subject, the third aspect of the present invention is provided with an indicator for displaying the normal state or abnormal state of the measurement data determined by the control means in the first aspect of the present invention. It is a feature.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration block diagram showing an embodiment of a wireless data collection device according to the present invention.

In FIG. 1, reference numerals 1 to 11, 12a, 12b and 50 are assigned the same symbols as in FIG. 2, 13 is a reference value storage circuit, 14 is a storage processing circuit, and 15 is a display device such as an LED. Further, 7 to 11, 13, 14, and 15 constitute a responder 51a, and 9, 11, 13, and 14 constitute a control means 52, respectively.

The connection relationship in the interrogator 50 is the same as in FIG. In the responder 51 a, the output of the antenna 7 is connected to the detector 8, and the output of the detector 8 is connected to the control circuit 9. The output of the control circuit 9 is connected to the reference value storage circuit 13 and the storage processing circuit 14.

The output of the storage processing circuit 14 is connected to the modulator 10 and the display 15, and the output of the modulator 10 is the antenna 7.
Connected to.

Further, the storage processing circuit 14 includes a starting circuit 11
Are connected to each other, and further, in the storage processing circuit 14, the output of the reference value storage circuit 13 and the sensor circuit 12 connected to the outside are connected.
The outputs of a and 12b are connected.

The operation of the embodiment shown in FIG. 1 will be described here. However, the operation of the interrogator 50 and the interrogator 50 and the responder 5
The communication operation between 1a is the same as the conventional example shown in FIG.

First, as an initial setting, the interrogator 50 writes a reference value in the reference value storage circuit 13 of the responder 51a in advance.

The responder 51a fetches the measurement data from the sensor circuit 12a or the like and stores it in the memory processing circuit 14 by the activation by the interrogation wave from the interrogator 50 or the regular activation by the activation circuit 11.

The storage processing circuit 14 compares the stored measurement data with the reference value of the reference value storage circuit 13 to determine whether it is within the reference value range. In other words, the “normal state” or “abnormal state” is determined.

At the request of the interrogator 50, the interrogator 5
When transmitting the measurement data to 0, the data of "normal state" or "abnormal state" is also transmitted together with the measurement data.

The interrogator 50 receiving these data displays the "normal state" or the "abnormal state" on the display 6.

For example, when the responder 51a is monitoring the room temperature, the reference value is stored in the reference value storage circuit 13 of the responder 51a as the reference value "15 ° C to 25 ° C" in advance.

If the output signal of the sensor circuit 12a, which is a temperature sensor, is "15 ° C to 25 ° C", "normal state"
Is transmitted to the interrogator 50 together with the measurement data.

As a result, by storing the reference value in the responder 51a in advance, it is not necessary to store the reference value in the interrogator 50 in advance, and it becomes possible to perform an abnormality diagnosis or the like for any responder. Moreover, since it is not necessary to store the reference value for each responder, the capacity of the storage circuit of the interrogator 50 can be small.

Further, the display 15 is made to display that fact.
For example, when an LED is used as the display unit 15, the “green” LED is turned on when the measurement data is “normal state”, and the “red” LED is turned on when the measurement data is “abnormal state”.

As a result, by providing the indicator 15 on the responder 51a to display the "normal state" or the "abnormal state", the "normal state" is displayed even if the interrogator 50 is not carried.
Alternatively, it becomes possible to judge the “abnormal state”. In addition, if an operation method is adopted in which data is collected only from the transponders displaying the "abnormal state", the number of round points will be reduced.

Furthermore, when the measurement data is fetched from the sensor circuit 12a or the like by the periodic activation by the activation circuit 11, not only the comparison with the reference value but also the storage processing circuit 14 displays the trend of the accumulated measurement data. If an abnormal tendency occurs after analysis, the activation interval of the activation circuit 11 is shortened to shorten the data measurement interval.

For example, when the responder 51a is set to measure data at a cycle of 60 minutes when it is normal, if the memory processing circuit 14 senses an abnormal tendency, the measurement interval is voluntarily set to 30 minutes or 20 minutes. As I said, it shortens and operates at the optimum measurement interval.

As a result, the responder 51a voluntarily adjusts the measurement interval and operates in an optimum state, thereby enabling precise data trend management.

Since the transponder 51a is basically driven by a battery, the LED is not continuously turned on.
It is also possible to save power consumption by performing a blinking operation.

If the responder 51a has a sufficient power source, a liquid crystal display or the like may be used to display not only the "normal state" or the "abnormal state" but also the measured value itself. good.

Further, in the embodiment shown in FIG. 1, the "normal state" or the "abnormal state" data is also transmitted together with the measurement data, but the reference value itself is transmitted and the interrogator 50 compares and judges. The processing may be performed.

Further, in FIG. 1, the control means 52 is disassembled into the control circuit 9, the starting circuit 11, the reference value storage circuit 13 and the storage processing circuit 14 for the sake of clarity, but it goes without saying. It is easy to realize these functions in one control circuit.

[0043]

As is apparent from the above description,
The present invention has the following effects. According to the first aspect of the present invention, by storing the reference value in the responder in advance, it is possible to realize the wireless data collection device capable of determining the quality of the measured data on the responder side. Further, since it is not necessary to store the reference value for each responder, the capacity of the storage circuit of the interrogator can be small.

According to the second aspect of the present invention, the transponder is provided with an indicator to display the "normal state" or the "abnormal state" so that the "normal state" or the "abnormal state" is displayed even if the interrogator is not carried. It becomes possible to judge

According to the third aspect of the invention, the responder voluntarily adjusts the measurement interval and operates in an optimum state, thereby enabling precise data trend management.

[Brief description of drawings]

FIG. 1 is a configuration block diagram illustrating an embodiment of a wireless data collection device according to the present invention.

FIG. 2 is a configuration block diagram illustrating an example of a conventional wireless data collection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 oscillator 2,10 modulator 3,4,7 antenna 5 demodulator 6,15 indicator 8 detector 9 control circuit 11 starting circuit 12a, 12b sensor circuit 13 reference value memory circuit 14 memory processing circuit 50 interrogator 51, 51a Transponder 52 Control means

Claims (3)

[Claims] 1. A wireless data collecting device comprising an interrogator and a transponder that modulates an interrogation wave from the interrogator based on data and reflects the interrogation wave as a response wave. An antenna for reflecting, a detector for detecting the interrogation wave, and a control means for determining a normal state or an abnormal state of the measurement data based on a reference value stored together with capturing measurement data input from the outside, A wireless data acquisition device comprising: a responder composed of a modulator that modulates the interrogation wave based on the output of the control means. 2. A control means for accumulating measurement data input from the outside at a constant interval by a starting circuit and varying a starting interval of the starting circuit based on a trend of the measured data. The wireless data collection device according to claim 1. 3. The wireless data collecting device according to claim 1, further comprising a display device for displaying a normal state or an abnormal state of the measurement data determined by the control means.