JP2001339291A - Data count processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the reliability of data with simple arrangement as to a data count processing apparatus. SOLUTION: A correcting process part 24 corrects a count value according to the comparison result of a comparing circuit part 23 which compares a count part 21 stored with the current count value and a backup part 22 stored with the last count value. The correcting process part 24 makes no correction when the values of the count pat 21 and backup part 22 are equal to each other, or copies the value of the backup part 22 to the count part 21 when the value of the backup part 22 is larger than that of the count part 21, the value of the backup part 22 to the count part 21 when the value of the count part 21 is larger than the value obtained by adding a unit quantity to the value of the backup part 22, or the value of the count part 21 to the backup part 22 when the value of the count part 21 is the unit quantity larger than the value of the backup part 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data count processing device, and more particularly to a data count processing device having a simple configuration and improved data reliability.

[0002]

2. Description of the Related Art In factory automation (FA), it is essential to collect various data from a managed device such as a manufacturing device. Therefore,
A computer as a data count processing device collects various data from the managed device.
However, depending on the factory, the managed device may be placed in a poor environment such as a lot of static electricity, a high temperature, and a lot of dust. In this case, the data may be destroyed by external noise. Therefore, various measures are taken against such data destruction.

For example, among data collected from a managed device, there is data that can be assumed to change in data per unit time, such as a count value of the number of components used in manufacturing. The following measures have been taken for such data.

First, the previously collected count value is backed up and changes per unit time are checked. If the change is larger than expected, it is determined that the count value collected this time is destroyed. Then, the currently collected count value is replaced with the previously collected count value.

Second, the previously collected count value is backed up, and a parity check or a CRC check is performed on the currently collected count value. When an error is detected, the count value collected this time is destroyed, so the count value collected this time is replaced with the count value collected last time.

[0006]

According to the method described above,
Although the data is somewhat inaccurate, it can prevent large errors in the final result. For example, in a case where “1” is assumed as the change in the count value per unit time, it is assumed that the change becomes “100” due to noise. In this case, if the count value collected this time is used as it is, the error is “100”, but if the count value collected last time is used, the error is only “1”. Thus, for example, the supply of lubricating oil to the joints of the industrial robot is based on the count value of the number of revolutions, and the replacement of the air filter is based on the count value of the number of times of circulation of the atmosphere, without a large error. , Can be managed within several errors, that is, within a range that can be regarded as correct.

However, the first method has the following problems. That is, it is difficult to set a threshold value for determining what value a change in data per unit time exceeds when the data is determined to be destroyed. Depending on the value of this setting, accurate data may not be collected. For example, in the above example, if the threshold value at the time when 100 times the unit time has elapsed is set to a large value “100”,
Although an error of “101” or more can be prevented, “2” to “9”
An error in the range of "9" cannot be recovered. Conversely, if the threshold is set to a small value “10”, the range of the error that cannot be recovered is “2”.
To “9”, but the program needs to repeat the data checking process at shorter time intervals. This increases the load on the processor. As a result, it becomes necessary to use a higher performance (and thus more expensive) processor, which increases the cost of the computer which is the data count processing device. In addition, since a high-performance processor has a fast operation clock and is susceptible to noise, there is a contradiction that taking measures against noise conversely makes the processor susceptible to noise.

On the other hand, if such processing is to be realized for each unit time by hardware, it is necessary to provide a check circuit for performing the processing in all the data detection units. That is, it is not possible to know which data detection unit needs the processing at the time of designing the hardware. Therefore, a check circuit is provided in all the data detection units, so that the mounting area increases and the cost of the data count processing device increases.

Further, the second method has the following problem. That is, if the number of data to be processed is large,
There is no other choice but to improve the processing performance of the processor that performs processing after error detection. As a result, it becomes necessary to use a higher-performance processor, which increases the cost of the data count processing device and makes it less susceptible to noise. Also, in this case, in response to the increase in the number of data to be processed, it is necessary to replace the processor with a higher-performance processor each time.

On the other hand, if such processing is to be realized by software, the load on the processor becomes extremely large, and high-speed calculations must be performed. Therefore, as a result, it becomes necessary to use a higher performance processor, which causes the same problem as described above.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a data count processing device having a simple configuration and improving the reliability of data.

[0012]

According to the present invention, there is provided a data count processing apparatus comprising: a count section for holding a current count value of data that increases by a unit amount each time counting; and a count section for storing a previous count value of the data. The backup circuit includes a backup unit that holds the data, a comparison circuit that compares the count value of the count unit and the count value of the backup unit, and a correction processing unit that corrects the count value based on the result of the comparison in the comparison circuit. The correction processing unit does not perform the correction when the count value of the counting unit is equal to the count value of the backup unit.When the count value of the backup unit is larger than the count value of the counting unit, the correction unit includes the backup unit. The count value is copied, and if the count value of the count unit is larger than the value obtained by adding the unit amount to the count value of the backup unit, the count value of the backup unit is copied to the count unit, and the count value of the count unit is backed up. When the count value is larger than the count value of the copy unit by the unit amount, the count value of the count unit is copied to the backup unit.

According to the data count processing device of the present invention, data is detected so as to increase by a unit amount each time counting is performed, and based on a comparison process, a change in data per unit time (unit amount) is used as a reference. Since it is determined whether the data is appropriate or not, it is not necessary to set a threshold value for determining that the data is destroyed, the accuracy of the data is only reduced to a minimum (unit amount), and the reliability of the data can be improved. . Further, since the comparison processing is performed by the comparison circuit, the load on the processor can be reduced by that much, and the data counting can be performed without the necessity of using a higher-performance (hence, more expensive) processor due to the comparison processing. It is possible to prevent an increase in the cost of a computer as a processing device, and also to prevent an operation clock from becoming faster and becoming less susceptible to noise due to the use of a high-performance processor. Furthermore, since most of the comparison processing is performed by hardware such as a comparison circuit and a small processing based on the comparison result is performed by software, it is necessary to improve the processing performance of the processor even when the number of data to be processed is large. Absent. Therefore,
From this point as well, it is not necessary to use a higher-performance processor due to the comparison processing. On the other hand, most of the processing is realized by hardware, but by storing the current count value of the data in the count unit and storing the previous count value in the backup unit, the comparison circuit and the correction processing unit become one. Since it suffices to provide them, the mounting area does not increase and the cost of the data count processing device can be prevented from increasing.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the configuration of a data count processing device. FIG. 1A shows the configuration of a data count processing device 100 according to the present invention, and FIG. Is shown.

In FIG. 1A, the data count processing device 100 detects the state of the counted device 200.
The counted device 200 outputs a plurality of signals (hereinafter, referred to as external signals) indicating the state to the data count processing device 1.
Output to 00. The data count processing device 100 includes, for example, a management computer. Counted device 2
00 is composed of, for example, a manufacturing apparatus installed in a factory.

The data count processor 100 includes a signal detector 1, a count processor 2,
Sequencer 3, count result storage unit 4, data management unit 5
Is provided. Further, the data count processing device 100
A PU (Central Processing Unit) and a main memory (both not shown) are provided. By executing the data count processing program and the data management program existing on the main memory on the CPU, the count processing unit 2 and the data management unit 5 are realized, respectively. Perform data management. The data management unit 5 controls the signal detection unit 1, the count processing unit 2, the sequencer 3, and the count result storage unit 4.

The signal detecting section 1 has a plurality of different signals (or
External signal). A plurality of different data are input from the counted device 200. Each data is, for example, a 1-bit serial signal. Counted device 200
Are different from each other. For example, the number of parts A and the number of parts B are different. Further, even if the signals indicate the same number of parts A, the signals differ in the number in the step a and the number in the step b.

For example, m pieces of data are input from the counted device 200 and detected. For example, the value of m is usually 8 to 10 (or more). Therefore, the signal detection unit 1 is composed of, for example, m unit detection circuits (not shown). The unit detection circuit includes, for example, a latch circuit (not shown) which latches an input at a predetermined cycle and outputs the latched input. The predetermined cycle is, for example, the same cycle as the count processing in the count processing unit 2 described later, that is, about 1/10 of the shortest interval of data change. For example, the value of m is usually 8 to 12 (or more).

The sequencer 3 controls the order of detection in the signal detector 1 and the order of counting in the count processor 2. For this purpose, the sequencer 3 outputs a control signal. A start signal is input from the data management unit 5 to the sequencer 3. The sequencer 3 outputs a control signal and the like while the start signal is being input. That is, the sequencer 3 starts (or stops) the operation in accordance with the instruction of the data management unit 5 and sends out a control signal, for example, during the operation of the counted device 200 or during work such as manufacturing. Therefore, during this period, the signal detection unit 1 and the count processing unit 2
Also works.

The sequencer 3 increments (+1) the number of the data to be processed at a predetermined cycle. The sequencer 3 uses the value of the number as a control signal in FIG.
As shown in (A), the operation is input to the signal detection unit 1 and the like to control the operation. For example, assuming that the above-mentioned m pieces of data are input, as shown in FIG. 3, the number of data to be processed is repeatedly incremented from 1 to m in order. Therefore, the detection process and the count process are performed in the order of data having signal numbers “1” to “m”. While the value of the same data number (the same control signal) is being output, detection processing and counting processing of one piece of data (information) are performed.

The signal detector 1 detects the value of each of a plurality of data under the control of the sequencer 3 described above. The signal detection unit 1 includes, for example, a multiplexer (not shown), and according to a control signal from the sequencer 3,
From the m pieces of data input from the counted device 200, data corresponding to the control signal is selected and output. For example, assuming that the value (control signal) of the number of the data to be processed is “2”, the second data from the counted device 200 is selectively output (detected) as shown in FIG. ). The output of the signal detection unit 1 is input to the count unit 21 of the count processing unit 2.

Here, the relationship between the data change and the cycle of the control signal of the sequencer 3, that is, the cycle of the detection processing and the count processing (the period from the previous processing to the next processing) is as follows. It is determined as follows. Counted device 2
At what cycle and interval (in correct operation) the plurality of data from 00 changes can be known in advance for each. Therefore, the sequencer 3 controls the period of the detection or the like so as to be shorter than the shortest interval of the change of the plurality of data.

That is, as shown in FIG. 3, the detection period A is made shorter than the shortest interval B between data changes. If the data duty ratio is not 50%, the shorter period is the interval B regardless of whether the data value is high level (or “1”) or low level (or “0”).
It is said. Therefore, when the data changes from “0” to “1” (the number of changes becomes “1”), the data always changes again in the same manner (the number of changes becomes “2”). Before the change), the change in the data can be detected. Therefore, the number of changes (from “0” to “1”) of the data is always one (unit amount) every time the data is detected and counted. As a result, the count value of the data is increased by the unit amount each time the data is counted.

Note that it is necessary to change from "1" to "0" before the same change from "0" to "1" again (the number of changes becomes "2"). To detect “0” after this change, the duty ratio of the data must be 5
If it is not 0%, the shorter period is set as the interval B regardless of whether the data value is at the high level or the low level.

Actually, the counted device 200 may be placed in an electrically inferior environment with a lot of static electricity or the like, and data may change (from an original value) due to external noise. Therefore, the cycle of detection or the like is set to, for example, about 1/10 of the shortest interval. If several mSec (milliseconds) is the shortest interval in the counted device 200, the period of detection or the like may be set to, for example, several hundred μSec (microseconds). During this one cycle, all of the m data are detected.

The detection cycle may be, for example, an intermediate point between a cycle in which the data changes once and a cycle in which the data changes twice (the number of changes becomes three).
In this case, the unit amount of change is “2”. Further, the number of times data changes from “1” to “0” may be counted.

As shown in FIG. 1B, the count processing section 2 includes a count section 21, a backup section 22, a comparison circuit section (comparison circuit) 23, a correction processing section 24, and a storage section 25.

The counting section 21 holds the current count value for data that increases by a unit amount each time counting is performed. The counting unit 21 includes the output circuit 211 and the adding circuit 2
12, a register 213 is provided. The output circuit 211 captures the value “1” or “0” of the data detected by the signal detection unit 1 and outputs the value. However, when "1" is followed by "1", "0" is output as the value of the data detected by the signal detection unit 1. The addition circuit 212 stores the value of the data detected by the signal detection unit 1 (actually, the output of the output circuit 211) and the storage unit 25
Of the count value of the counting unit 21 stored in the counter unit 21 and the value read out by the counting unit 21 (described later), and
This is the current count value of the data. Therefore, “1” or “0” is added to the current count value and the value read by the count unit 21. The current count value is stored in the register 213.

The backup unit 22 holds the previous count value of the data. The backup unit 22
For example, it consists of a register. The backup unit 22 stores in the register the count value of the count unit 21 stored in the storage unit 25 that has been read out by the count unit 21 (described later) as the previous count value.

The storage unit 25 stores the count values of the counting unit 21 and the backup unit 22 for each of the plurality of data at predetermined positions. The storage unit 25 includes an external storage device (auxiliary storage device) such as a semiconductor memory (SRAM or the like), a hard disk, a flexible disk, a magneto-optical disk, or the like. The storage unit 25 stores the detection result of the signal detection unit 1 at a predetermined position for each of a plurality of different signals, as shown in FIG. For example, the above-mentioned m pieces of data are stored from position “1” to position “m”.

Of the count values of the counting unit 21 and the backup unit 22 stored in the storage unit 25, those corresponding to the data detected by the signal detection unit are read out to the counting unit 21 and the backup unit 22, respectively. For example, assuming that the value (control signal) of the number of data to be processed from the sequencer 3 is “2”, FIG.
As indicated by the hatching, the values stored in the count unit 21 and the backup unit 22 in the previous count processing are finally read out for the second data.

Further, the count values of the counting unit 21 and the backup unit 22 after the correction processing by the correction processing unit 24 to be described later are respectively saved at the read positions of the storage unit 25. For example, assuming that the control signal is “2”, the second data is finally stored in the count unit 21 and the backup unit 22 in the current count process at the position indicated by the diagonal lines in FIG. Is written. Thereby, continuity of data is maintained.
Since both the count values of the counting unit 21 and the backup unit 22 are saved in the storage unit 25, the backup is performed twice.

The comparison circuit section 23 compares the count value of the count section 21 with the count value of the backup section 22. As shown in FIG. 2, the comparison circuit unit 23
31 and 232, a unit amount holding circuit 234, and an adding circuit 23
5 is provided.

The comparison circuit 231 compares the count value of the count unit 21 with the count value of the backup unit 22. When the former is smaller than the latter,
A predetermined signal (for example, “1”) is output. The unit amount holding circuit 234 holds a unit amount. For example, by setting the timing of the detection and counting process as described above, the unit amount becomes “(+) 1”. Adder circuit 235
Adds the unit amount held by the unit amount holding circuit 234, for example, “1” to the count value of the backup unit 22. The comparison circuit 232 compares the count value of the count unit 21 with the output of the adder circuit 235 (that is, the count value of the backup unit 22 plus a unit amount, for example, “1”). The comparison circuit 232 outputs a predetermined first signal (for example, “1”) when the former is larger than the latter, and outputs a predetermined second signal (for example, “1”) when both are equal. I do.

The correction processing section 24 corrects the count value based on the result of the comparison in the comparison circuit section 23, as shown in FIG. FIG. 4 shows a data counting process performed by the correction processing unit 24.

As shown in FIG. 4A, the counting section 21
From the count value (eg, “9”) of the backup unit 22 (eg, “10”)
Is larger, the current count value is smaller than the previous count value. Therefore, the correction processing unit 24 determines that the current count value is abnormal. In this case, the correction processing unit 24 copies the count value of the backup unit 22 to the counting unit 21 and outputs this to the register 4. The count value in the backup unit 22 remains unchanged. Therefore, the counting unit 21 and the backup unit 2
The same value (for example, “10”) as the count value of 2 is saved to a predetermined storage position in the storage unit 25, and the count value is read in the next count process.

As shown in FIG. 4B, the counting section 21
(Register 213) count value (eg, “12”)
Is the count value of the backup unit 22 (for example, “10”)
Is larger than the value obtained by adding the unit amount “1” to the current count value, the current count value is larger than the previous count value by “2 (that is, a value larger than the unit amount)” or more. Therefore, the correction processing unit 24 determines that the current count value is abnormal. In this case, the correction processing unit 24 copies the count value of the backup unit 22 to the counting unit 21 and outputs this to the register 4. The count value in the backup unit 22 remains unchanged. Therefore, the same value (for example, “10”) as the count value of the counting unit 21 and the backup unit 22 is saved in a predetermined storage position of the storage unit 25, and the count value is read in the next counting process.

As shown in FIG. 4C, the counting section 21
(Register 213) (eg, “11”)
Is the count value of the backup unit 22 (for example, “10”)
If the count value is larger by one unit than “1”, the current count value is larger by “1” than the previous count value.
Therefore, the correction processing unit 24 determines that the current count value is normal. In this case, the correction processing unit 24 outputs the count value of the count unit 21 to the register 4 and copies the count value of the count unit 21 to the backup unit 22.
Therefore, the count value in the backup unit 22 is the current count value, that is, a value obtained by adding “1” to the previous value. Accordingly, the same value (for example, “1”) as the count value of the counting unit 21 and the backup unit 22 is used.
1 ”) is saved to a predetermined storage position in the storage unit 25, and the count value is read in the next count process.

As shown in FIG. 4D, the counting section 21
Count value (for example, “10”) of (register 213)
And the count value of the backup unit 22 (for example, “10”)
Are equal, the current count value is equal to the previous count value. Therefore, the correction processing unit 24 determines that the current count value is normal. In this case, the correction processing unit 24 outputs the count value of the counting unit 21 to the register 4 without performing the above-described correction processing. In addition,
The count values in the counting unit 21 and the backup unit 22 remain unchanged. Therefore, the same value (for example, “10”) as the count value of the counting unit 21 and the backup unit 22 is saved in a predetermined storage position of the storage unit 25,
The count value is read in the next count processing.

The count result storage unit 4 includes a correction processing unit 24
The count value of the counting unit 21 after the correction processing by the above is stored in the predetermined position. Therefore, the count result storage unit 4 has the same configuration as the storage unit 25. For example, for the above-mentioned m pieces of data, from position “1” to position “m”
Stored by The count value of the count unit 21 is overwritten with the previous value each time the output is performed. Actually, the correction processing unit 24 does not output (prohibits) predetermined data to the count result storage unit 4. For example,
Until the value reaches a certain value, there are data that the data management unit 5 does not refer to, data that the data management unit 5 does not need, and the like. In this case, when the constant value is reached, the output is performed.

The data management unit 5 controls the signal detection unit 1, the count processing unit 2, the sequencer 3, and the count result storage unit 4 as described above, and refers to the count value of the count result storage unit 4. For this purpose, the correction processing unit 24
The end of the above-described correction processing is notified to the data management unit 5 each time. For example, for the m pieces of data described above, for each of the control signals “1” to “m”, after copying the data to the counting unit 21 shown in FIG. 4A or FIG. If the copying is not performed, a notification is made each time after the comparison in the comparing circuit unit 23.

The backup unit 22 may have the configuration shown in FIG. 5 instead of one register. The backup unit 22 in FIG. 5 includes an error correction unit. The error correction section
For example, a parity check function is provided.

The error correction section includes registers 223 and 22
4. Parity generation circuits 222 and 225, comparison circuit 22
6. An error correction circuit 227. The error correction section
Backup unit 22 after correction processing by correction processing unit 24
An error correction code is generated and added to the count value of (register 221), and is saved in the storage unit. In addition, the value read from the storage unit to the backup unit 22 and having been subjected to error correction using the error correction code added thereto is used as the previous count value of the data (stored in the register 221).

Specifically, as described above, FIG.
The register 221 corresponding to the register serving as the backup unit 22 stores a count value corresponding to the result of the comparison processing. The parity generation circuit 222 includes a register 2
Parity data is generated from the count value of 21 and written into the register 223 together with the count value. Register 2
The value of 23 is written in the storage unit 25 as a backup value. In the next comparison process, the backup value in the storage unit 25 is read out to the register 224. The parity generation circuit 225 generates parity data from the count value of the register 224. Comparison circuit 226
Compares the parity data portion of the value of the register 224 with the parity data generated by the parity generation circuit 225. Based on the comparison result, the error correction circuit 227
Performs error correction. That is, when the two match, the count value portion of the value of the register 224 is stored in the register 221.
If they do not match, the count value portion of the register 224 is corrected using the parity data portion of the value of the register 224, and the value is stored in the register 22.
Output to 1. Thus, even if the count value of the backup unit 22 changes at any time due to external noise, this can be detected and corrected.

FIG. 6 is a flow chart of the data count processing, and shows the data management processing executed by the count processing unit 2 according to the present invention.

The contents of (the output circuit 211 and the register 213 of) the counting section 21 and (the register of) the backup section 22 are initialized (reset) (step S1). That is, the initial value of the count is “0”.

It is checked whether or not the control signal from the sequencer 3 has reached the timing of processing the data to be processed (step S2).

The current count value (previous saved value) of the data to be processed is obtained by the count unit 21 (the output circuit 211) from a predetermined position in the storage unit 25.
The previous count value (previously saved value) of the data is acquired in (the register of) the backup unit 22 (step S3). That is, the register 2 of the counting unit 21
The value 13 is obtained by adding the value “1” or “0” of the processing target data to the value read from the storage unit 25.

The comparison circuit unit 23 compares the count value of the count unit 21 with the count value of the backup unit 22, and the correction processing unit 24 determines whether the count value of the backup unit 22 is larger than the count value of the count unit 21. Check (step S4). That is, it is checked whether or not a predetermined signal is output from the comparison circuit 231.

If the value is not large (there is no output of a predetermined signal), the comparison circuit unit 23 further calculates the count value of the counting unit 21 and the value obtained by adding “1 (unit amount)” to the count value of the backup unit 22. Then, the correction processing unit 24 checks whether or not the count value of the count unit 21 is larger than a value obtained by adding 1 to the count value of the backup unit 22 (step S5). That is, it is checked whether or not the comparison circuit 232 outputs the predetermined first signal.

If the value is not large (there is no output of the first signal), the comparison circuit unit 23 further calculates a value obtained by adding “1 (unit amount)” to the count value of the counting unit 21 and the count value of the backup unit 22. Then, the correction processing unit 24 checks whether or not the two are equal (step S6). That is, it is checked whether or not the comparison circuit 232 outputs the predetermined second signal.

If they are not equal (there is no output of the second signal), the count value of the counting unit 21 and the backup unit 22
Since the count value is equal to this, no signal to be counted was generated at this timing.
It is determined that the correct count is being performed, and no processing is performed as it is (NOP) (step S7), and the processing of the processing target data is ended. Before the end, the count values of the counting unit 21 and the backup unit 22 are saved to a predetermined position in the storage unit 25.

In step S6, if the count value of the counting unit 21 is equal to the value obtained by adding 1 to the count value of the backup unit 22 (there is a second signal output), the count value has changed by "+1" from the previous time. Because
The correction processing unit 24 determines that the correct counting has been performed, and counts the count value of the counting unit 21 to the backup unit 2.
2 (step S8), and the processing of the processing target data ends. Before the end, the count values of the counting unit 21 and the backup unit 22 are saved to a predetermined position in the storage unit 25.

In step S4, when the count value of the backup unit 22 is larger than the count value of the count unit 21 (there is output of a predetermined signal), and in step S5.
In the case where the count value of the count unit 21 is larger than the value obtained by adding 1 to the count value of the backup unit 22 (there is output of the first signal), the count value of the count unit 21 is different from “0” or “+1” from the previous time. , It is determined that an abnormality has occurred, and the backup unit 22
Is copied to the counting section 21 (step S
9), the processing of the processing target data ends. Before the end, the count values of the counting unit 21 and the backup unit 22 are saved to a predetermined position in the storage unit 25.

Actually, the processing shown in FIG. 6 is executed for each of the data input from the counted device 200 and detected by the detection processing section 1. For example, when looking at the above-mentioned m pieces of data, the processes shown in FIG. 6 are executed in that order for the numbers “1” to “m”, and this is repeated.

FIG. 7 is a configuration diagram of the state management system.
2 shows a configuration of a state management system including the data count processing device 100 of FIG.

A plurality of counted devices 200 are provided,
A computer, which is one data count processing device 100, is provided for each of a plurality of (for example, four) counted devices 200. A management computer 300 is provided in a higher hierarchy of the data count processing device 100 and is connected via a network 500. As shown by a dotted line in FIG. 7, a plurality of management computers 300 may be provided, and a higher management computer 400 may be provided at a higher hierarchy. The management computer 300 includes a count result storage unit 4
At any time, refer to the result of the count processing stored in
Various processes are performed using the reference value. Thereby, for example, the number of parts used in the entire factory can be known.

In this case, the process shown in FIG. 6 is executed for each of the data input from the plurality of counted devices 200 and detected by the detection processing unit 1. For example, the counted device 20 that outputs the aforementioned m data
When there are four 0s, the processing shown in FIG. 6 is performed on m pieces of data from the first counted device 200 as described above, and then each of the counted devices The processing shown in FIG. 6 is similarly performed on m pieces of data from 200, and this is repeated.

Although the present invention has been described with reference to a data count processing device for a manufacturing apparatus in a factory or the like, the present invention is also applied to a data count processing device in a general information processing system or amusement machine management system. be able to.

[0060]

As described above, according to the present invention,
In the data count processing device, by detecting data so as to increase by a unit amount each time counting is performed, by judging whether the data is appropriate based on the unit amount based on comparison processing of the current and previous count values of the data, You can clearly determine the destruction of the data, so that the minimum (unit amount) of data will only be compromised,
As a result, data reliability can be improved. Further, by holding the current and previous count values of the data and sequentially processing them, the number of means for comparison processing can be reduced to only one, so that an increase in the mounting area can be prevented, and the data count can be prevented. It is possible to prevent the cost of the processing device from increasing. In addition, since the comparison process is performed by the comparison circuit, the load on the processor can be reduced and the need for using a high-performance processor due to the comparison process can be eliminated, resulting in an increase in the cost of the data count processing device. And can be prevented from becoming weak to noise.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a data count processing device.

FIG. 2 is a configuration diagram of a data count processing device.

FIG. 3 is an explanatory diagram of a data count processing device.

FIG. 4 is an explanatory diagram of a data count processing device.

FIG. 5 is a configuration diagram of a data count processing device.

FIG. 6 is a data count processing flow.

FIG. 7 is a configuration diagram of a data count processing device.

[Explanation of symbols]

 2 Count processing unit 21 Count unit 22 Backup unit 23 Comparison circuit (Comparison circuit unit) 24 Correction processing unit 25 Storage unit 100 Data count processing device 200 Counted device

Claims (5)

[Claims] 1. A count unit that holds a current count value of data that increases by a unit amount each time counting is performed, a backup unit that holds a previous count value of the data, and a count value of the count unit. A comparison circuit that compares the count value of the backup unit; and a correction processing unit that corrects the count value based on a result of the comparison in the comparison circuit. When the count value of the backup unit is equal, the correction is not performed, and when the count value of the backup unit is larger than the count value of the count unit, the count value of the backup unit is copied to the count unit. The count value of the counting unit is larger than a value obtained by adding the unit amount to the counting value of the backup unit. When the count value is larger, the count value of the backup unit is copied to the count unit. When the count value of the count unit is larger than the count value of the backup unit by the unit amount, the count value of the count unit is added to the backup unit. A data count processing device for copying a value. 2. The data count processing device further controls a signal detection unit that detects a value of each of the plurality of data according to control of a sequencer, and controls an order of detection in the signal detection unit.
A sequencer for controlling each detection cycle to be a cycle shorter than the shortest interval of the plurality of data changes; and for each of the plurality of data, the count value of the counting unit and the backup unit at a predetermined position. And a storage unit that stores therein, corresponding to the data detected by the signal detection unit among the count values of the count unit and the backup unit stored in the storage unit, respectively, the count unit and the backup unit The count values of the counting unit and the backup unit after the correction processing by the correction processing unit are respectively saved to the read positions of the storage unit. The data count processing device described in the above. 3. The count unit includes an adder circuit, wherein the adder circuit is configured to output the data value detected by the signal detection unit and the count value of the count unit stored in the storage unit. 3. The data count processing device according to claim 2, wherein the data read by the counting unit is added to obtain the current count value of the data. 4. The backup unit includes an error correction unit, and the storage unit adds the error correction code generated by the error correction unit to the count value of the backup unit after the correction processing by the correction processing unit, and The value read out from the storage unit to the backup unit, the error corrected by the error correction unit using the error correction code added to the value, and the previous count of the data. The data count processing device according to claim 2, wherein the data count value is a value. 5. The data count processing device further includes: a count result storage unit that stores the count value of the count unit after the correction processing by the correction processing unit; and data that refers to the count value of the count result storage unit. The data count processing device according to claim 1, further comprising a management unit, wherein the correction processing unit notifies the data management unit of the end of the correction processing.