JPH08202738A - Miniaturized data collector - Google Patents

Abstract

PURPOSE: To store and collect data in a volatile memory just enough by automatically stopping writing corresponding to memory overflow. CONSTITUTION: In the independent data collector in which a built-in battery 4 supplies power for the entire device, when converting analog data detected by an analog sensor 5 to digital data with an A/D converting part 2 and writing the digital data successively from its leading address in a volatile memory 3 while counting up storage addresses with a counter 6 through the measurement starting input of an operator, a comparison deciding means 8 compares the storage addresses with the write enable final address of the memory 3 so that the overflow can be detected. When the overflow is detected, writing is stopped and measurement is finished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collecting device for collecting data obtained from a sensor or the like and outputting the data to a computer or the like, and in particular, the data collecting device can be mounted in a narrow gap portion inside the equipment to collect the data. The present invention relates to such a small-sized data collection device having a built-in power supply.

[0002]

2. Description of the Related Art In recent years, since the storage capacity of a memory has increased, a data collecting apparatus for sampling and storing analog data as digital data and outputting the data to a computer or the like for analysis has been effectively used. Small data acquisition devices with a relatively small capacity are also provided.

In general, a memory that stores data cannot store data after the memory overflows, or overwrites the previous data with the data. further,
Although the memory of a small-sized data collection device has a small shape itself, it is intended to store a large amount of data so that analysis by collected data can be performed reliably, and a volatile memory with a large memory capacity is used. ing. In this volatile memory, all the data once collected disappears unless the driving power supply is constantly secured.

Therefore, in the conventional small-sized data collection device, when storing the collected data in the memory, the time until the memory overflows is determined by the amount of data to be collected, the sampling time, etc., and before the time elapses from the start of measurement. The memory overflow was prevented by manually stopping the measurement. Further, it is necessary to determine the consumption of the built-in battery that drives the memory from the voltage at which the data collection is started.

FIG. 9 is a block diagram showing the structure of a conventional small data collection device. In the figure, 1 is a main body of a small data collecting device, 2 is an analog / digital converter (hereinafter
A / D converter) 3 is a volatile memory that stores converted digital data, 4 is a built-in battery that supplies power to the data collection device, and operates the data collection device without power supply from other sources. I am letting you. Reference numeral 5 is an analog sensor for detecting an analog amount such as temperature, 6 is a counter for sequentially storing digital data in the volatile memory 3,
Reference numeral 7 denotes a microcomputer (hereinafter referred to as a microcomputer) including the A / D converter 2 and the counter 6.

FIG. 10 is a timing chart showing the operation of the above conventional example. In the figure, T represents a period for measuring and collecting data, which is a time obtained by dividing a memory overflow time in which the memory addresses 1 to N are full in advance by the data amount to be collected and the sampling time. t indicates the time interval of the sampling data, and the numerical values 1 to N mean the memory address of the volatile memory.

FIG. 11 is a flow chart showing the data collection operation of the above conventional example. In the figure, when data collection is started, the value of the counter 6 is set to the initial value 1 in step 1, the data measured by the analog sensor 5 is input in step 2, and the digital data is read by the A / D converter 2 in step 3. To the memory address n = 1 of the volatile memory 3 in step 4, and the address n = in step 5.
The next address is designated as (n + 1), and the process returns to step 2. The above operation is repeated to sequentially store the data from the memory address 1 of the volatile memory 3, and the measurement is continued unless the measurement is manually stopped after the time T.

[0008]

In such a conventional small-sized data collecting apparatus, the measurement is manually stopped at the predicted memory overflow timing. Therefore, if the measurement is stopped earlier than the overflow time, data will be insufficient. Also, if the measurement is stopped after a delay, a memory overflow will occur and reliable data collection or necessary data collection cannot be guaranteed.

During the measuring time T, the built-in battery 4 constantly supplies power to the volatile memory 3 and the microcomputer 7 having the A / D converter 2 and the counter 6 which consume relatively large power. Even if the memory 3 overflows, the power is continuously supplied to the built-in battery 4, which expedites the consumption of the built-in battery 4. As a result, the time required to secure the minimum required minimum guaranteed voltage for the volatile memory 3 to function becomes shorter, and the risk of erasing all data in the volatile memory increases.

The present invention is intended to solve the above-mentioned problems. It is possible to stop the automatic storage at the final address of the volatile memory and write the data without excess or deficiency. Further, the operator can recognize the memory overflow state and the data can be sent in a timely manner. It is an object of the present invention to provide a data collection device that can collect data and can effectively use a battery.

[0011]

According to a first aspect of the present invention, there is provided an analog sensor for detecting an analog amount, an A / D converter for converting analog data detected by the analog sensor into digital data, and the digital signal. Comparison judgment for detecting whether or not a memory overflow occurs by comparing a volatile memory for storing data, a counter for counting up the address of the volatile memory, and a memory address of the volatile memory and a storable final address And a built-in battery for supplying electric power to the entire apparatus, wherein the digital data is stored in the volatile memory sequentially from the head address while the memory address is counted up by the counter in response to a measurement start input by the operator. When the overflow is detected by the comparison and determination means, the data writing is automatically stopped and the measurement is performed. The present invention according to a second aspect of the present invention is an analog sensor for detecting an analog amount, and an A / A for converting analog data detected by the analog sensor into digital data. The D conversion unit, the volatile memory that stores the digital data, the counter that counts up the address of the volatile memory, the memory address of the volatile memory and the last address that can be stored are compared to determine whether a memory overflow occurs. Comparing and judging means for detecting whether or not, a display device, a display means for driving the display device, and a built-in battery for supplying electric power to the entire device are provided, and a memory address is stored in the counter by a measurement start input by an operator. When sequentially storing the digital data in the volatile memory from the first address while counting up, the comparison / determination means A small data collecting device that automatically stops writing data when an overflow is detected and displays the overflow state on the display device by the display means to end the measurement operation. The present invention according to item 3, an analog sensor that detects an analog amount, an A / D conversion unit that converts the analog data detected by the analog sensor into digital data, a volatile memory that stores the digital data, A comparison judgment that compares the counter that counts up the address of the volatile memory with the memory address of the volatile memory and the last address that can be stored to calculate the remaining memory capacity, and also detects whether or not the memory overflows. Means, a display device, display means for driving the display device, and power supply for the entire device. When the digital data is stored in the volatile memory sequentially from the first address while counting up the storage address by the counter in response to the measurement start input by the operator, the remaining storage capacity by the comparison and determination means. A small data that displays the number on the display device by the display means, automatically stops writing data when an overflow is detected, and displays the overflow state on the display device to end the measurement operation. The present invention according to claim 4 is a collecting device, and an analog sensor for detecting an analog amount, an A / D conversion unit for converting analog data detected by the analog sensor into digital data, and the digital data. A volatile memory for storing, and a counter for counting up the address of the volatile memory Comparing the storage address of the volatile memory with the final address that can be stored to calculate the number of remaining storage capacities and compare / determine means for detecting whether or not there is a memory overflow, and power supply to the A / D conversion unit. A / D conversion drive control means for opening and closing the display, a display device, a display means for driving the display device, and a built-in battery for supplying electric power to the entire device, and are stored in the counter by a measurement start input by an operator. When sequentially storing the digital data in the volatile memory from the first address while counting up the addresses, the comparison determination means displays the remaining storage capacity number on the display device and the overflow is detected. In this case, the writing of data is automatically stopped to display the overflow state on the display device, and the A / D conversion drive control means is also provided. According to a fifth aspect of the present invention, there is provided an analog sensor for detecting an analog amount, and a small data collecting device configured to terminate the measurement operation by cutting off the power supply to the A / D conversion unit. An A / D converter that converts analog data detected by an analog sensor into digital data, a volatile memory that stores the digital data, a counter that counts up the address of the volatile memory, and a storage of the volatile memory. An address / a final address that can be stored is compared to calculate the remaining storage capacity, and comparison / determination means for detecting whether or not there is a memory overflow, and A / D for opening and closing the power supply of the A / D converter Conversion drive control means, display device, display means for driving the display device, measurement drive control means for controlling measurement operation, and power supply for the entire device When the digital data is stored in the volatile memory sequentially from the head address while counting up the memory address by the counter in response to the measurement start input by the operator, the remaining storage capacity by the comparison and determination means. When the number is displayed on the display device by the display means and an overflow is detected, the writing of data is automatically stopped to display the overflow state on the display device, and the A / D conversion drive control means controls A /
This is a small-sized data collection device that cuts off the power supply to the D conversion unit to end the measurement operation and does not accept the operator's re-input of the measurement start in the overflow state by the measurement drive control means.

[0012]

In the present invention according to claim 1, the comparison / determination circuit detects the memory overflow and automatically stops the writing to the volatile memory. Further, in the present invention according to claim 2, the comparison / determination circuit detects the memory overflow, automatically stops the writing to the volatile memory, and causes the display means to display the memory overflow state. In the present invention according to claim 3, the comparison determination circuit displays the remaining writable memory capacity on the display means, detects the memory overflow, and automatically stops the writing to the volatile memory. Display the memory overflow status on the display means. Further, in the present invention according to claim 4, the comparison determination circuit displays the remaining writable memory capacity on the display means, detects the memory overflow, and automatically stops the writing to the volatile memory. The display means is caused to display the memory overflow state, and the A / D conversion drive control means is caused to disconnect the power input of the A / D conversion section. In the present invention according to claim 5, the comparison determination circuit displays the remaining writable memory capacity on the display means, detects the memory overflow, and automatically stops the writing to the volatile memory. The display means is caused to display the memory overflow state, and the A / D conversion drive control means is caused to cut off the power input to the A / D conversion section, and the measurement control means prohibits the measurement start input by the operator in the overflow state.

[0013]

【Example】

(Embodiment 1) An embodiment of a compact data collecting apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of this embodiment.
It should be noted that the same components as those of the conventional example are given the same reference numerals and detailed description thereof will be omitted. This embodiment differs from the conventional example in that
The microcomputer 7 is provided with the comparison / determination means 8 to compare the address to be written in the volatile memory 3 with the final address, and when the final address is exceeded, it is judged as an overflow and the writing is automatically stopped.

FIG. 2 is a timing chart showing the operation of this embodiment. 3 is a flowchart showing the operation of this embodiment. In the figure, when the data collection is started, the count n of the counter 6 is set to an initial value 1 in step 1, the data measured by the analog sensor 5 is input in step 2, and the A / D conversion unit 2 sets a constant value in step 3. The analog data is converted into the digital data at the sampling time t of, and is written in the memory address n of the volatile memory 3 in step 4, and the count value is n = (n +
The value is set to 1), and in step 6, the comparison and determination means 8 checks whether the count value n is equal to or less than the final address N of the volatile memory 3. If n is N or less, the process returns to step 2 to perform the next writing. After that, by repeating the above operation until the count value n of the counter 6 reaches the final address N in the loop processing of steps 2 to 6,
Sampling data is sequentially stored from the address 1 of the volatile memory 3 to the final address N. When the count value n exceeds N in step 6, the comparison / determination means 8 gives an instruction to stop the measurement and the writing is stopped. The measurement stop by the comparison / determination means 8 can be executed by turning off the write enable of the volatile memory 3, for example. In this way, the writing of data is executed to the final address N of the volatile memory 3 without excess or deficiency, and the writing is automatically stopped. In addition,
It goes without saying that the data collection can be stopped by the operator's input before the final address N is reached.

As described above, according to the small data collecting apparatus of the present embodiment, the comparison and determination means 8 detects the overflow and automatically stops the writing, so that the volatile memory 3 can store the data without excess or deficiency. The data can be stored, and it is possible to prevent data shortage due to human error and data loss due to overwriting, and to collect data reliably.

(Embodiment 2) An embodiment of a small data collecting apparatus according to the present invention will be described below with reference to the drawings. FIG. 4 is a block diagram showing the configuration of this embodiment. The same components as those of the first embodiment are assigned the same reference numerals and detailed description thereof will be omitted. The present embodiment is different from the conventional example in that the microcomputer 7 is provided with the comparison / determination means 8 and the display means 9 and the display device 10 is provided. After the writing is stopped, the display means 9 is instructed to display the memory overflow on the display device 10.

FIG. 5 is a flow chart showing the operation of this embodiment. In the figure, when data collection is started, sampling data of analog data detected by the analog sensor 5 by the same processing as steps 1 to 6 of the first embodiment shown in FIG. 3 changes from the first address to the last address of the volatile memory 3. The data are sequentially written up to N, and the comparison / determination means 8
When it is determined in step 6 that the count value of the counter 6 exceeds the final address N, writing is stopped, and in step 7, the memory overflow is displayed by the display means 9 and the display device 10, and the data collection is completed. By the above processing, writing can be automatically completed, and the user can avoid power consumption of the built-in battery by turning off the power immediately after the completion of writing.

As described above, according to the small data collecting apparatus of the present embodiment, the comparison and determination means 8 detects the overflow and automatically stops the writing, so that the volatile memory 3 can store the data without excess or deficiency. The data can be stored, data loss due to human error and data loss due to overwriting can be prevented, and reliable data collection can be performed. In addition, the display device 10 notifies the operator of the overflow condition, thereby replacing the alternative data. Provide convenience to the collection device for tasks such as preparation.

(Embodiment 3) An embodiment of a compact data collecting apparatus of the present invention according to claim 3 will be described below with reference to the drawings. The configuration of this embodiment is the same as the configuration shown in FIG. In the present embodiment, the comparison / determination means 8 automatically stops the writing for the memory overflow as in the second embodiment, but further displays the remaining writable memory capacity during writing. It is in.

FIG. 6 is a flow chart showing the operation of this embodiment. In the figure, when data collection is started, the count value n of the counter 6 is set to an initial value 1 in step 1, and in step 2, the comparison and determination means 8 sets the final address N of the volatile memory 3 and the count value n. Difference X (X = N-
n) is calculated, and the X value is displayed on the display device 10 by the display means 9. This value X indicates the remaining writable capacity described above. Next, by the loop processing of steps 4 to 8, while writing the remaining memory capacity, data is sequentially written up to the final address of the volatile memory 3, and when the memory overflow is judged in step 8, the writing is stopped,
In step 9, the memory overflow is displayed and the data collection ends. Therefore, the user can grasp the timing when the memory overflow occurs in advance and prepare another data collection device.

As described above, according to the small data collecting apparatus of the present embodiment, the comparison and determination means 8 detects the overflow and automatically stops the writing, so that the volatile memory 3 can store the data without excess or deficiency. Data can be stored, data loss due to human operation mistakes and data loss due to overwriting can be prevented, and reliable data collection is possible, and the remaining storage capacity of the memory is displayed on the display device 10 by the display means 9 during measurement. And the overflow state are displayed to inform the operator of the state of the memory and improve the efficiency of measurement work such as preparation for the alternative data collection device.

(Embodiment 4) An embodiment of a compact data collecting apparatus according to the present invention will be described below with reference to the drawings. FIG. 7 is a block diagram showing the configuration of this embodiment. It should be noted that the same components as those in Examples 1 to 4 are assigned the same reference numerals and the description thereof will be omitted. This embodiment is the third embodiment.
The difference is that the microcomputer 7 uses the A / D conversion drive control means 1
1 is provided so that the power supply to the A / D conversion unit 2 is cut off when the comparison determination unit 8 determines that the memory overflows.

The operation of this embodiment will be described below.
When data collection is started, the analog data input from the analog sensor 5 is converted into digital data by the A / D converter 2, and the write address is counted up by the counter 6 and sequentially written to the volatile memory 3 up to the final address N. When the comparison judgment means 8 detects the memory overflow, the writing is stopped, and the display means 9 causes the display device 10 to display.
Let's display a memory overflow. At this time, the A / D conversion drive control means 11 receives the memory overflow signal from the comparison determination means 8 and cuts off the power supply to the A / D conversion section 2. Needless to say, the overflow and the remaining capacity can be displayed as in the third embodiment. By the above operation, wasteful power consumption in the A / D converter 2 which consumes a relatively large amount of power is eliminated to suppress consumption of the built-in battery 4, and the voltage required for writing and storing data is maintained for a long time. be able to.

As described above, according to the small-sized data collecting apparatus of this embodiment, the comparison and determination means 8 detects the overflow and automatically stops the writing, so that the volatile memory 3 stores the data without excess or deficiency. Can be
By preventing data shortage due to human error and data loss due to overwriting, reliable data collection is possible, and by disconnecting the power input of the A / D conversion unit 2 to the A / D conversion drive control means 11. By preventing unnecessary power consumption of the built-in battery, displaying the remaining storage capacity of the memory on the display device 10 by the display device 9 during measurement, and displaying the overflow state, preparation for an alternative data collection device, etc. Make the measurement work of the operator easy.

(Embodiment 5) An embodiment of a compact data collecting device of the present invention according to claim 5 will be described below with reference to the drawings. In the means shown in the first to fourth embodiments, when the operator makes an erroneous operation such as touching the data collection start switch by mistake, the collected data may be overwritten and the previous data may be lost. . The present embodiment solves this problem and prevents data loss due to erroneous operation. FIG. 8 is a block diagram showing the configuration of this embodiment. The same components as those in the first to third embodiments are designated by the same reference numerals and detailed description thereof will be omitted. This embodiment is different from the third embodiment in that the microcomputer 7 further includes a measurement drive control means 12, and the comparison and determination means 8 judges that the memory overflows and stops writing, and displays the overflow, and then the overflow is displayed. As long as it is done, it means that re-measurement is prohibited.

The operation of this embodiment will be described below. At the time when the operator turns on a measurement start switch (not shown) to start data collection and writes data up to the final address N of the volatile memory 3, the comparison / determination means. When an overflow is detected by 8 and the writing is stopped, the A / D conversion drive control means 11 turns off the power of the A / D conversion section 2 and the display means 9 causes the display device 10 to display the overflow, measurement is performed. The drive control means 12 inputs a display signal from the display means 9, for example, turns off the circuit of the measurement start switch for the operator to input the measurement start, and the operator operates to erase the overflow display on the display device 10. Do not collect data again unless you do. By this processing, even if the measurement start switch is operated by mistake, the risk of overwriting data can be eliminated.

As described above, according to the present embodiment, the comparison and determination means 8 detects the overflow and automatically stops the writing, so that the volatile memory 3 can store the data without excess or deficiency. In addition to preventing data shortage due to human error or data loss due to overwriting, reliable data collection is possible, and the remaining storage capacity of the memory is displayed on the display device 10 by the display means 9 during measurement. By displaying the overflow status, the operator is informed of the memory status to improve the measurement work efficiency such as preparation for an alternative data collection device, and the measurement drive control means 12 prohibits the measurement start re-input in the overflow status. By doing so, it is possible to eliminate the risk of overwriting due to an erroneous operation by the operator.

In the present embodiment, the case where there is an overflow display has been described, but it goes without saying that even if there is no display device, remeasurement cannot be performed in an overflow state.

[0029]

As is apparent from the above description, the present invention according to claim 1 provides an analog sensor for detecting an analog amount, and an A / D conversion for converting analog data detected by the analog sensor into digital data. Section, a volatile memory that stores the digital data, a counter that counts up the address of the volatile memory, and a storage address of the volatile memory and the last address that can be stored are compared to determine whether or not there is a memory overflow. And a built-in battery for supplying electric power to the entire apparatus. The counter sequentially counts the memory address by the counter in response to the measurement start input of the operator and sequentially stores the digital data in the volatile memory from the head address. When storing data, automatically write data when overflow is detected by the comparison / determination means. By stopping and stopping the measurement operation, data can be stored in the volatile memory without excess or deficiency, and data loss due to human error or data loss due to overwriting can be prevented to ensure reliable data. It is possible to collect. The present invention according to claim 2 provides an analog sensor for detecting an analog amount, an A / D converter for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data. A counter that counts up the address of the volatile memory, a comparison determination unit that compares the memory address of the volatile memory with the last address that can be stored to detect whether or not there is a memory overflow, and a display device. The display device for driving the display device and a built-in battery for supplying electric power to the entire device are provided, and while the memory address is being counted up by the counter in response to a measurement start input by the operator, the head address is sequentially transferred to the volatile memory. When the digital data is stored, the data is automatically acquired when an overflow is detected by the comparison / determination means. By stopping the writing and displaying the overflow state on the display device by the display means to end the measurement operation, it is possible to store the data in the volatile memory without excess or deficiency, and a human operation error. It is possible to prevent data shortage due to data loss and data loss due to overwriting, and to reliably collect data, and to notify the operator of the overflow condition by displaying, and to provide an alternative data collection device with convenience for work such as preparation. The present invention according to claim 3 provides an analog sensor for detecting an analog amount, an A / D converter for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data. And a counter that counts up the address of the volatile memory and the memory address of the volatile memory and the last address that can be stored are compared to calculate the remaining memory capacity and detect whether or not the memory overflows. Comparing and determining means, a display device, a display means for driving the display device, and a built-in battery for supplying electric power to the entire device, while counting up the memory address by the counter in response to a measurement start input by the operator. When sequentially storing the digital data in the volatile memory from the head address,
The comparison / determination means displays the remaining storage capacity on the display device, and when the overflow is detected, the writing of data is automatically stopped and the overflow state is displayed on the display device for measurement. By terminating the operation, it is possible to store data in the volatile memory without excess or deficiency, prevent data loss due to human error or data loss due to overwriting, and ensure reliable data collection. At the same time, the operator is informed of the memory status by displaying the remaining storage capacity of the memory during measurement and the overflow status, thereby improving the measurement work efficiency such as preparation for an alternative data collecting device.
The present invention according to claim 4 provides an analog sensor for detecting an analog amount, an A / D converter for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data. And a counter that counts up the address of the volatile memory and the memory address of the volatile memory and the last address that can be stored are compared to calculate the remaining memory capacity and detect whether or not the memory overflows. Comparison / determination means, A / D conversion drive control means for opening / closing the power supply of the A / D conversion section, a display device, display means for driving the display device, and a built-in battery for supplying power to the entire device. The counter is sequentially incremented from the first address to the volatile memory while the memory address is being counted up by the counter in response to the measurement start input by the operator. When storing digital data, the remaining memory capacity is displayed on the display device by the display means by the comparison / determination means, and when an overflow is detected, the writing of data is automatically stopped and the overflow state is displayed. While displaying on the device,
Since the A / D conversion drive control unit cuts off the power supply to the A / D conversion unit to end the measurement operation, data can be stored in the volatile memory without excess or deficiency. Data loss due to operation mistakes and data loss due to overwriting can be prevented, and reliable data collection is possible, and unnecessary power consumption of the A / D conversion unit can be prevented to extend battery life. The display of the remaining storage capacity of the memory and the display of the overflow state facilitate the operator's measurement work such as preparation for an alternative data collection device. The present invention according to claim 5 provides an analog sensor for detecting an analog quantity, and an A for converting analog data detected by the analog sensor into digital data.
The D / D conversion unit, the volatile memory that stores the digital data, the counter that counts up the address of the volatile memory, and the storage address of the volatile memory and the last address that can be stored are compared and the remaining Comparing and determining means for calculating the number of storage capacities and detecting whether or not there is a memory overflow, and A / for opening / closing the power supply of the A / D conversion section.
The D conversion drive control means, the display device, the display means for driving the display device, the measurement drive control means for controlling the measurement operation, and the built-in battery for supplying the power of the entire device are provided, and the measurement start by the operator is started. When sequentially storing the digital data in the volatile memory from the first address while incrementing the memory address by the counter by inputting, the remaining storage capacity number is displayed on the display device by the comparing and judging means. Then, when an overflow is detected, the writing of data is automatically stopped, the overflow state is displayed on the display device, and the A / D
The conversion drive control means cuts off the power supply to the A / D converter to end the measurement operation, and the measurement drive control means prevents the operator from accepting the measurement start re-input in the overflow state. Data can be stored in the volatile memory without excess or deficiency, data loss due to human error or data loss due to overwriting can be prevented, reliable data collection is possible, and the remaining storage capacity of the memory during measurement Display and overflow status improve measurement work efficiency such as preparation for an alternative data collection device, and there is a risk that the data will be overwritten and lost even if the operator re-enters the measurement start due to an erroneous operation in the overflow status. Sex can be eliminated.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a small data collection device of the present invention according to claim 1.

FIG. 2 is a timing chart showing the operation of the embodiment.

FIG. 3 is a flowchart showing the operation of the embodiment.

FIG. 4 is a block diagram showing the configuration of an embodiment of a small data collection device of the present invention according to claim 2;

FIG. 5 is a flowchart showing the operation of the embodiment.

FIG. 6 is a flowchart showing the operation of an embodiment of the small data collection device of the present invention according to claim 3;

FIG. 7 is a block diagram showing the configuration of an embodiment of a small data collection device of the present invention according to claim 4;

FIG. 8 is a block diagram showing the configuration of an embodiment of a small data collection device of the present invention according to claim 5;

FIG. 9 is a block diagram showing the configuration of a conventional small data collection device.

FIG. 10 is a timing chart showing the operation of the device.

FIG. 11 is a flowchart showing the operation of the apparatus.

[Explanation of symbols]

 1 Small Data Collection Device Main Body 2 A / D Converter 3 Volatile Memory 4 Built-in Battery 5 Analog Sensor 6 Counter 7 Microcomputer (Microcomputer) 8 Comparison Judgment Means 9 Display Means 10 Display Device 11 A / D Conversion Drive Control Means 12 Measurement Drive control means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiji Fukui 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. An analog sensor for detecting an analog amount, an analog / digital conversion unit for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data.
A counter that counts up the address of the volatile memory, a comparison and determination unit that compares the memory address of the volatile memory with the last address that can be stored to detect whether or not a memory overflow occurs, and supplies power to the entire apparatus. When the digital data is stored in the volatile memory sequentially from the head address while counting up the memory address by the counter in response to the measurement start input by the operator, the comparison / determination means detects an overflow. A small data collection device that automatically stops writing data and terminates the measurement operation when this happens. 2. An analog sensor for detecting an analog amount, an analog / digital conversion unit for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data.
A counter that counts up the address of the volatile memory, a comparison and determination unit that compares the storage address of the volatile memory with the last address that can be stored to detect whether or not a memory overflow has occurred, a display device, and the display. A display unit for driving the device and a built-in battery for supplying electric power to the entire device are provided, and the digital address is sequentially transferred from the head address to the volatile memory while the memory address is being counted up by the counter in response to a measurement start input by the operator. When storing data,
A small data collecting device which automatically stops writing data when the comparison and determination means detects an overflow, and ends the measurement operation by displaying the overflow state on the display device by the display means. 3. An analog sensor for detecting an analog amount, an analog / digital conversion unit for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data.
A counter that counts up the address of the volatile memory and a storage address of the volatile memory is compared with the last address that can be stored to calculate the number of remaining storage capacities and to detect whether or not a memory overflow has occurred. Determination means,
A display device, display means for driving the display device, and a built-in battery for supplying electric power to the entire device are provided. The counter sequentially counts from the first address while counting up the memory address with the counter in response to a measurement start input by the operator. When the digital data is stored in the volatile memory, the remaining storage capacity is displayed on the display device by the display means by the comparison / determination means, and the writing of data is automatically stopped when an overflow is detected. A small data acquisition device for displaying an overflow condition on the display device and ending the measurement operation. 4. An analog sensor for detecting an analog amount, an analog / digital conversion unit for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data.
A counter that counts up the address of the volatile memory and a storage address of the volatile memory is compared with the last address that can be stored to calculate the number of remaining storage capacities and to detect whether or not a memory overflow has occurred. Determination means,
An analog / digital conversion drive control means for opening and closing the power supply of the analog / digital conversion unit, a display device, a display means for driving the display device, and a built-in battery for supplying electric power to the entire device are provided. When the digital data is sequentially stored in the volatile memory from the first address while the storage address is being counted up by the counter in response to the measurement start input of, the comparison determination means displays the remaining storage capacity number by the display means. When an overflow is detected on the device and the overflow is detected, the overflow of the data is automatically displayed on the display device, and the analog / digital conversion drive control means supplies power to the analog / digital converter. A small data acquisition device that cuts off and ends the measurement operation. 5. An analog sensor for detecting an analog amount, an analog / digital conversion unit for converting analog data detected by the analog sensor into digital data, and a volatile memory for storing the digital data.
A counter that counts up the address of the volatile memory and a storage address of the volatile memory is compared with the last address that can be stored to calculate the number of remaining storage capacities and to detect whether or not a memory overflow has occurred. Determination means,
Analog / digital conversion drive control means for opening / closing the power supply of the analog / digital conversion section, display device, display means for driving the display device, measurement drive control means for controlling measurement operation, and power consumption of the entire device When the digital data is stored in the volatile memory sequentially from the head address while counting up the memory address by the counter in response to a measurement start input by the operator, the comparison determination means remains. When the overflow is detected by the display means by the display means and the overflow is detected, the overflow state is automatically displayed on the display device and the analog / digital conversion drive control is performed. The power supply to the analog / digital converter is cut off by means to terminate the measurement operation. And, a small data collecting apparatus that does not accept the measurement start reenter the operator in an overflow condition by said measuring drive control means.