JPH1062207A - Data collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data collecting device capable of automatically collecting measuring data for a long period even when power lines are not wired in the vicinity of the device. SOLUTION: A power supply part 40 for supplying power to a detection part 10 provided with various sensors, a control part 20 for taking and storing respective outputs from the detection part 10, and a communication part 30 for executing data communication to/from a centralized management device 8 through a telephone line is provided with an AC/DC converter 48 for generating DC power supply from commercial power supply of AC 100V, a solar battery 42 for converting solar light energy into electric energy and a floating charging circuit 44 for selecting an input from either one of the solar battery 42 and the converter 48, supplying power to respective parts of the device and charging a battery 45 with electricity in a floating state. Even when commercial power supply can not be obtained in an area among mountains, power to be supplied to respective pars of the device can be obtained and data can be collected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collection device provided with a sensor for generating a signal corresponding to the state of an object to be measured, and taking in a signal from the sensor as input data and storing it.

[0002]

2. Description of the Related Art Conventionally, in order to manage the state of a building, for example, the deflection of a bridge, etc., a strain sensor or an inclination sensor is attached to the building, and signals from these sensors are automatically taken in as input data. Devices for processing and storing this input data are known.

[0003]

In this type of apparatus, it is necessary to supply power to operate a sensor and a data processing section for processing and storing input data. In some cases, power lines may not be routed near buildings to be managed.

However, wiring a new power line only for this device has a problem in that the cost is too high. Therefore, it is conceivable to use a battery, but the battery must be replaced periodically.
There was a problem that maintenance required time and effort.

The present invention has been made to solve the above-mentioned problem, and provides a data collection device capable of automatically collecting measurement data for a long period of time even if a power line is not wired nearby. Aim. In particular, the inventions according to claims 3 and 4 aim at facilitating the work of collecting collected data in such a data collection device. Further, the invention according to claim 5 The purpose of the present invention is to make it possible to promptly respond to abnormalities in collected data.

[0006]

Means for Solving the Problems and Effects of the Invention According to the first aspect of the present invention, there is provided a sensor for generating a signal corresponding to a state of an object to be measured, and a signal from the sensor. A data processing unit that captures and stores the input data as input data, and a power supply unit that supplies power to each unit of the device.
A solar cell that converts light energy of the sun into electric energy, and a storage battery that is floatingly charged by an output of the solar cell, provided, and power is supplied by an output of the solar cell or an output of the storage battery. I do.

[0007] In the data collection device of the present invention configured as described above, when receiving solar light, the solar cell converts the light energy of the sun into electric energy and outputs the electric energy. And supplies floating power to the storage battery.

On the other hand, when the irradiation of sunlight is interrupted at night or due to bad weather, etc., and the output of the solar cell is reduced, the storage battery discharges the energy charged by the output of the solar cell, so that each part of the device is connected to each part of the device. Supply power. As described above, according to the data collection device of the present invention, power is supplied to each unit of the device by using the solar cell. Therefore, even if the power line is not wired near the position where the device is installed, Power required for data collection can be secured. In addition, since a storage battery that is floatingly charged by the output of the solar cell is provided, even at night or when the output of the solar cell is reduced due to bad weather or the like, power can be supplied stably. Since the battery is charged as needed by the output of the solar cell, stable data collection can be performed over a long period of time without performing maintenance such as battery replacement.

Next, a second aspect of the present invention is the first aspect.
In the data collection device described in (1), power supply stopping means for stopping power supply to the sensor except when the data processing unit captures the input data is provided. According to the data collection device of the present invention configured as described above, unnecessary power consumption is suppressed, so that the period during which the storage battery can be used without charging is extended, and, for example, due to continued bad weather, the storage battery is not charged. Even if the period during which charging is not performed is long, the battery is unlikely to run out and the reliability of the device can be improved.

Next, a third aspect of the present invention is directed to the first aspect.
3. The data collection device according to claim 2, wherein the data processing unit includes a data writing device that writes data to a removable card-type storage medium, and the input data is stored in the card-type storage medium. Is stored.

[0011] According to the data collection apparatus of the present invention configured as described above, the collection of the data collected by the apparatus can be easily performed only by replacing the card-type storage medium. Can be easily used by an external computer equipped with a similar data writing device.

As a card-type storage medium, for example, an IC card, a RAM card, etc., which store data in a semiconductor memory, a magnetic card, etc., which magnetically store data, etc. can be used. . Next, claim 4
The data collection device according to any one of claims 1 to 3, further comprising: a data transmission unit configured to transmit the data accumulated by the data processing unit to an external device via a predetermined communication medium. It is characterized by having.

According to the data collection device of the present invention thus configured, the data collected by the device can be easily collected from a remote place via a communication medium without going to the site where the device is installed. can do. As a communication medium, for example, a public or dedicated telephone line, a data communication line, various wireless lines, and the like can be used.

Next, a fifth aspect of the present invention is directed to the first aspect.
5. The data collection device according to claim 4, wherein the data processing unit includes a determination unit that determines an abnormality of the input data, and the determination unit determines that the input data is abnormal. And an abnormality reporting unit for reporting to an external device via a predetermined communication medium.

[0015] In the data collection apparatus of the present invention thus configured, the judging means judges the abnormality of the input data from the sensor to the data processing section, and when it is judged that the input data is abnormal, the abnormality is determined. The reporting means reports via a communication medium. Therefore, according to the data collection device of the present invention, even in a remote place, an abnormality in input data can be promptly recognized by reporting via a communication medium, and it is possible to quickly respond to this abnormal situation.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an overall configuration diagram of a data collection system configured using the data collection device of the present embodiment.

As shown in FIG. 2, the data collection system 2
Is attached to a column (eg, a bridge) of an outdoor building, and measures the state of the building via various sensors, for example, the amount of deflection or torsion of the column, and accumulates the measurement results. The data collection devices 4, 5, and 6 include a centralized management device 8 communicably connected to each of the data collection devices 4, 5, and 6 via a telephone line, a wireless line, and an RS485 cable.

Here, the centralized management device 8 includes a CPU 52
and an interface circuit 54 for inputting and outputting data to and from the data collection devices 4, 5, and 6, and various commands are input from the outside. And a display device 56 for displaying the operation state of the data collection system 2 and the data collected by the data collection devices 4, 5, and 6 are connected to the microcomputer 52 via a bus 59. I have.

The interface circuit 54 has a telephone line modem 6 for performing data communication via a telephone line.
0, a wireless modem 62 for performing data communication via a wireless line, and an RS485 driver 64 for performing data communication via an RS485 cable are connected.

The centralized management device 8 configured as described above includes:
It communicates with each of the data collection devices 4, 5, and 6 via each communication medium (telephone line, wireless line, RS485 cable), and operates a keyboard 58 or a data transfer command or measurement described later according to a preset program. By transmitting the condition change command to the data collection devices 4, 5, and 6, the data collected by the data collection devices 4, 5, and 6 are collected, and the measurement conditions in the data collection devices 4, 5, and 6 are changed. .

Next, FIG. 1 is a block diagram showing the internal configuration of the data collection device 4 of the present embodiment. As shown in FIG. 1, a data collection device 4 according to the present embodiment includes a digital sensor 12 configured using a limit switch, an encoder, and the like and outputting digital data as a detection result, and a strain sensor and a temperature sensor using a semiconductor element. , A detection unit 10 including an analog sensor 14 that magnetically detects an inclination angle using a pendulum and includes an analog sensor 14 that outputs analog data as a detection result, and the sensors 12 and 14 of the detection unit 10.
And a communication unit 30 for performing data communication with the centralized management device 8 via a telephone line (wireless line, RS485 cable), and a detection unit 10, a control unit 20, The communication unit 30 includes a power supply unit 40 that supplies power.

Here, the control unit 20 includes a CPU 22a, an RO
A digital input interface 24 for taking in the output of the digital sensor 12 and an analog input interface 2 for digitizing and taking in the output of the analog sensor 14 are constituted mainly of a microcomputer 22 composed of an M22b, a RAM 22c, a timer 22d and the like.
5, a digital output interface 26 for inputting and outputting digital signals to and from the communication unit 30;
RS232 that inputs and outputs data according to the 232C standard
A C interface 27 and a RAM card driver 28 for inputting and outputting data to and from the RAM card C are connected to the microcomputer 22 via a bus 29. The digital output interface 26 also outputs a later-described selection signal S to the power supply unit 40.

The RAM 22c of the microcomputer 22 has a digital input interface 2
4 and a data storage area for storing input data fetched via the analog input interface 25, a number of measurement inputs indicating the number of input data to be stored in the data storage area, a sampling cycle indicating data collection timing, and a An input abnormality judgment value that is a comparison value at the time of abnormality judgment,
A measurement condition storage area for storing measurement conditions and the like, such as a report destination telephone number indicating a report destination when an abnormality in input data is detected, is provided. The contents of the measurement condition storage area can be changed by a measurement condition change command transmitted by the centralized management device 8.

In the control unit 20 configured as described above, the digital sensor 12 and the analog sensor 14
Is input to the microcomputer 22 via the digital input interface 24 and the analog input interface 25. And the microcomputer 22
However, by storing the acquired data in the RAM card C via the RAM card driver 28 and controlling the communication unit 30 via the digital output interface 26 and the RS232C interface 27, the centralized management device 8
For example, if there is an abnormality in the input data, a process to notify the fact is performed.

Next, the communication unit 30 converts the digital data DD from the digital output interface 26 into a communication format for a pager and outputs the data to the telephone line, and the data DR from the RS232C interface 27. A data communication modem 34 which converts the data DR into a communication format for data transmission over a telephone line and outputs the data DR to a telephone line; a wireless modem 36 which converts data DR into a communication format for data transmission over a wireless line; Relatively long distance DR (several tens of km)
And an RS485 driver 38 that converts the data into data conforming to the RS485 standard that is capable of data transmission and is resistant to noise.

That is, communication with the central management device 8 can be performed using an appropriate communication medium according to the installation location of the data collection device 4. For example, if a telephone line is wired nearby, the pager communication modem 3
2 or a data communication modem 34 to communicate via a telephone line, while if no telephone line is wired nearby, use a wireless modem 36 to communicate via a wireless line or an RS485 driver 38 To communicate via an RS485 cable. Next, the power supply unit 40 includes a solar cell 42 that converts light energy of the sun into electric energy and outputs the electric energy,
AC that inputs a commercial power supply and generates a predetermined DC output
/ DC converter 48, and an input from either the solar cell 42 or the AC / DC converter 48 is selected and supplied to the outside as the first power source Ea, and the battery 45 is float-charged by the selected input. The charging circuit 44 and the first
The power supply Ea is input and the digital output interface 26
From the second power supply E
and a switch 46 for supplying it to the outside as b.
As shown by a dotted line in the figure, the first power supply Ea is supplied to the microcomputer 22, the digital output interface 26, the RS232C interface 27, and the communication unit 30 of the control unit 20, and the second power supply Eb is used as the second power supply Eb.
0, the digital input interface 24, the analog input interface 25, the RAM card driver 28, and the detection unit 10.

In the power supply unit 40 configured as described above, when a commercial power supply line of AC 100 V is wired near the location where the data collection device 4 is installed, the power supply unit 40 takes in the commercial power supply line and supplies power to each unit of the device. When the commercial power supply line is not wired, power is supplied to each unit of the device using the solar cell 42. The power supply by the first power supply Ea is always performed, and the power supply by the second power supply Eb can be controlled by the selection signal S of the control unit 20.

When the solar cell 42 is used, when sunlight is irradiated, the output of the solar cell 42
The power supply to the respective units of the device and the charging of the battery 45 are performed simultaneously, and when the output of the solar cell 42 falls below a predetermined value due to nighttime or bad weather, the power supply to the respective units of the device is performed by discharging the battery 45. Further, even when a commercial power supply is used, the battery 45 is charged, and power is supplied by discharging the battery 45 in the event of a power failure or momentary interruption.

Next, the operation of the entire data collection device 4 will be described with reference to the flowchart of the processing performed by the microcomputer 22 of the control unit 20 shown in FIG. This process is performed after a predetermined initialization process is performed after the power is turned on. The initialization process sets a default value in the measurement condition storage area of the RAM 22c,
The selection signal S is set so that the switch 46 is turned off (open). That is, after the initialization processing, the digital input interface 24, the analog input interface 25, the RAM
Power is not supplied to the card driver 28 and the card driver 28 is stopped.

When the present process is started, it is first determined in step 110 whether or not it is a data collection timing.
Move to 0. This determination is made by comparing the value of the timer 22d with the set value of the sampling period of the measurement condition storage area.

In step 120, the selection signal S is set so that the switch 46 is turned on. This allows
The power supply Eb is connected to the digital input interface 24, the analog input interface 25,
It is supplied to the RAM card driver 28.

In the following step 130, the digital input interface 24 and the analog input interface 25
Through the digital sensor 12 and the analog sensor 14
From the RAM 22c together with time data indicating the measurement time indicated by the timer 22d.
The data is stored in the data storage area provided above. Then, in the next step 140, the input data and the time data stored in the data storage area are transferred to the RAM card C via the RAM card driver 28.

In the following step 150, it is determined whether or not there is an abnormality in the input data by comparing the input data in the data storage area with the input abnormality determination value set in the measurement condition storage area. The process proceeds to step 160 to perform step 170 after performing the notification process. If there is no abnormality, the process directly proceeds to step 170.

In the notification process in step 160, the notification telephone number set in the measurement condition storage area is output to the pager communication modem 32 via the digital output interface 26. Then pager communication modem 3
2 performs a dialing operation to ring the pager, which is the destination of the report telephone number, or to display a message on the pager, so that the manager who owns the pager is notified of the abnormality.

In step 170, the selection signal S is set via the digital output interface 26 so that the switch 46 is turned off (open), and the process returns to step 110. Thereby, the detection unit 10 and the control unit 2
The power supply to the digital input interface 24, analog input interface 25, and RAM card driver 28 of 0 is cut off.

On the other hand, if it is determined in step 110 that it is not the data collection timing, step 1
The process proceeds to 80 to determine whether a command has been received from the centralized management device 8. This determination is made by monitoring each signal line controlled by the RS232C interface 27. If the command has not been received, the process proceeds to step 110, and if it is determined that the command has been received, the process proceeds to step 190.

In step 190, it is determined whether or not the received command is a data transfer command. If the received command is a data transfer command, the process proceeds to step 200, executes data transfer processing, and returns to step 110. In this data transfer processing, the data stored in the data storage area is output to the data communication modem 34 via the RS232C interface 27. Then, the data communication modem 34 transfers data to the central management device 8 via the telephone line. When the data transfer process is completed, all data in the data storage area is deleted.

On the other hand, if it is determined in step 190 that the command is not a data transfer command, it is determined that the command is a measurement condition change command, the process proceeds to step 210, and the process returns to step 110 after executing the measurement condition change process. In the measurement condition change processing, each value in the measurement condition storage area is changed according to the value indicated by the measurement condition change command.

That is, the data collection device 4 performs the measurement process with the second power supply Eb turned on at each determined data collection timing, and receives a command from the centralized management device 8 in response to the command. Processing such as transfer of collected data and change of measurement conditions is performed.

Although the data collection device 4 has been described here, the processing contents of the data collection devices 5 and 6 are as follows.
The processing is basically the same as the processing in the data collection device 4 described above, and in each processing of steps 160, 200, and 210,
In the data collection device 5 that performs data communication with the central management device 8 via a wireless line, a wireless modem 36 is used instead of the pager communication modem 32 and the data communication modem 34, and data communication is performed via an RS485 cable. In the data collection device 6, the RS485 driver 38
The only difference is that.

As described above, according to the data collection device 4 of the present embodiment, the power for operating each unit of the device can be supplied by the solar cell 42, so that the power line in the mountainous area or the like can be supplied. Can be installed without any problem even if is installed in a place where is not wired.

Further, since the battery 45, which is float-charged by the solar cell 42, is provided, even when the output of the solar cell 42 is reduced due to nighttime, bad weather, or the like, it is possible to surely supply power to each part of the device. In addition, since the power supply to the portion related only to the data collection is stopped at times other than the data collection, the power consumption of the entire apparatus can be reduced. as a result,
Since the time during which the operation of the battery 45 can be operated without charging becomes long, even if the battery 45 is not charged for a long time due to bad weather or the like, it is difficult for the battery to run out and continuous data collection can be performed. This can be performed reliably, and the reliability of the device can be improved.

Further, according to the data collection device 4 of the present embodiment, data communication is performed with the centralized management device 8 at a remote place via various communication media (telephone line, wireless line, RS485 cable). The data collected by the device 4 can be easily collected without going to the site where the device 4 is installed.

Further, according to the data collection device 4 of the present embodiment, the abnormality of the input data taken from the digital sensor 12 and the analog sensor 14 is determined, and if there is an abnormality, a report is made. The situation can be promptly recognized, and a response to this abnormal situation can be taken promptly.

Furthermore, according to the data collection device 4 of the present embodiment, the input data is stored in the RAM card C, so that the function of the communication unit 30 cannot be used for any reason. Even in this case, data during that time can be collected without omission. In addition, collection of collected data
It can be performed simply by replacing the AM card C, and the data stored in the RAM card C can be easily used by an external device to which the same one as the RAM card driver 28 of the device 4 is connected. can do.

The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the gist of the present invention. For example, in the above embodiment, when it is determined that there is an abnormality in the input data, the pager is notified to the pager via the pager communication modem 32.
The notification may be sent to the central management device 8 via the data communication modem 34.

In the above embodiment, each of the data collecting devices 4, 5, and 6 has all the modems 32, 34, and 36 and the driver 38. However, only those necessary according to the installation location of the device are provided. And the device may be downsized. Further, in the above embodiment, the central management device 8
Is configured to transfer collected data in response to a data transfer command from the central control unit 8 every time a predetermined number of data is accumulated or a predetermined time elapses. , The automatically stored data may be transferred.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an internal configuration of a data collection device according to an embodiment.

FIG. 2 is a block diagram illustrating an overall configuration of a data collection system configured using the data collection device according to the embodiment.

FIG. 3 is a flowchart illustrating a process executed by a control unit of the data collection device according to the embodiment.

[Explanation of symbols]

2 Data collection system 4, 5, 6 Data collection device 8 Centralized management device 10 Detection unit 12 Digital sensor 14 Analog sensor 20 Control unit 22, 52
Microcomputer 24 Digital input interface 25 Analog input interface 26 Digital output interface 27 RS23
2C interface 28 RAM card driver 29 59 Bus
Reference Signs List 30 communication part 32 pager communication modem 34 data communication modem 36, 62 wireless modem 38, 64 RS485 driver 40 power supply part 42 solar cell 44 floating charging circuit 45 battery 46 switch 48 AC / DC converter 52 ...
Microcomputer 54 Interface circuit 56 Display device 58
… Keyboard 60… phone line modem 62… wireless modem

Claims (5)

[Claims] A sensor for generating a signal corresponding to a state of a measurement target; a data processing unit for receiving and storing a signal from the sensor as input data; a power supply unit for supplying power to each unit of the device; A data collection device comprising: a solar cell that converts light energy of the sun into electric energy; and a storage battery that is floatingly charged by an output of the solar cell. A data collection device for supplying power by an output of a storage battery. 2. The data collection device according to claim 1, further comprising a power supply stop unit that stops power supply to the sensor except when the data processing unit captures the input data. . 3. The data processing unit includes a data writing device that writes data to a removable card-type storage medium, and stores the input data in the card-type storage medium. The data collection device according to claim 1 or 2, wherein 4. The data stored by the data processing unit is
4. A data transmission means for transmitting data to an external device via a predetermined communication medium.
The data collection device according to any one of the above. 5. The data processing unit further includes a determination unit that determines whether the input data is abnormal. If the determination unit determines that the input data is abnormal, the determination unit determines whether the input data is abnormal. The data collection device according to any one of claims 1 to 4, further comprising an abnormality notification unit that notifies the device.