JPH0633237U - Arithmetic device with real-time arithmetic function for measurement data - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide an arithmetic unit capable of performing arithmetic including measurement data in real time. [Structure] The data measured by the measuring means 8 is given to the calculating means 10. On the other hand, the calculation command input means 16
A calculation command is input from. The continuous determination means 14 is
It is determined whether or not this calculation command includes a measurement calculation command. If the measurement calculation command is not included, the real-time calculation flag is set, and if it is not included, the real-time calculation flag is not set. The arithmetic means 10 executes an arithmetic command if the real-time arithmetic flag is not set, and the arithmetic result is displayed on the display means 12.
Output to. The display means 12 displays the calculation result. On the other hand, if the real-time calculation flag is set, the measurement data from the measuring means 8 is fetched, the calculation command is executed, and the calculation result is displayed on the display means 12. When the real-time calculation flag is set, this series of processes is repeated. That is, when the output of the previous calculation result ends,
The measurement data is newly captured, the calculation is performed, and the calculation result is output. As a result, the calculation result can be displayed in real time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an arithmetic device, and particularly to realization of a real-time arithmetic function of measurement data.

[0002]

[Prior art]

In general, when performing measurement, there are cases where calculation is performed based on the measured data. For example, when the electric power consumed by the load 6 of the circuit as shown in FIG. 15 is measured by using a voltmeter, it is performed as follows. Here, it is assumed that the resistance value RL of the load 6 is known, the state of the network 4 changes with time, and the output current I _o thereof also changes with time.

First, the voltage E _o across the load 6 is measured by a voltmeter such as a tester. Then, a calculator such as a calculator is used to calculate the power consumption W based on the following equation.

W = E _o ² / _RL ... (1) The power consumption W can be calculated as described above.

[0005]

[Problems to be solved by the device]

 However, the above conventional techniques have the following problems.

Firstly, the procedure of reading the data measured by a measuring instrument such as a tester and inputting this data together with the calculation formula by a calculator was complicated, and the operation was complicated.

Secondly, as in the example shown in FIG. 15, when the measurement data changes with time, the same operation must be repeated, which not only complicates but also requires real-time results ( In the above example, there is a problem that the electric power W) cannot be obtained.

An object of the present invention is to solve the above problems and to provide an arithmetic unit capable of performing arithmetic including measurement data in real time.

[0009]

[Means for Solving the Problems]

 The arithmetic unit according to claim 1 measures a physical quantity and outputs measurement data corresponding to the physical quantity, an arithmetic command input means for inputting an arithmetic command, and whether the input arithmetic command includes a measurement arithmetic command. Whether or not it is included, and if it is included, a continuous determination unit that sets a real-time operation flag is set.If the real-time operation flag is not set, the operation is performed based on the input operation command, and the operation result is output. If the operation flag is set, an operation means for performing an operation every predetermined time based on the input operation command and the measurement data from the measuring means fetched at every predetermined time, and outputting an operation result every predetermined time; The display means for displaying the calculation result from is provided.

According to another aspect of the present invention, there is provided a calculation device according to claim 2, wherein a measurement data input terminal for inputting measurement data corresponding to a physical quantity, a calculation command input means for inputting a calculation command, and a measurement calculation command included in the input calculation command. It is determined whether or not it is included, and if it is included, the continuous determination means that raises the real-time operation flag. If the real-time operation flag is not raised, the operation is performed based on the input operation command, and the operation result is output. If the flag is set, a calculation means for calculating at a predetermined time and outputting a calculation result at a predetermined time based on the inputted calculation command and the measurement data from the measurement data input terminal fetched at a predetermined time, Display means for displaying the calculation result from the means.

According to a third aspect of the present invention, there is provided a calculation device for measuring a physical quantity and outputting measurement data corresponding to the physical quantity at predetermined time intervals, a calculation command input means for inputting a calculation command, and a calculation command inputted. Whether or not a measurement calculation command is included, and if it is included, a continuous judgment means that sets a real-time calculation flag, and whether or not the measurement data has changed from the previous time is judged. If the real-time calculation flag is not set, the calculation is performed based on the input calculation command, the calculation result is output, the real-time calculation flag is set, and the change output is output. If so, it is provided with a computing means for performing a computation based on the inputted computing command and the measurement data from the measuring means captured this time, and outputting a computation result, and a display means for displaying the computation result from the computing means. It is characterized in that.

According to another aspect of the present invention, there is provided a calculation data input terminal for inputting measurement data corresponding to a physical quantity at predetermined time intervals, a calculation command input means for inputting a calculation command, and a calculation calculation command included in the input calculation command. Whether the measurement data is included, and if it is included, the continuous judgment means that sets the real-time calculation flag, and whether the measurement data has changed from the previous time is judged. If the real-time calculation flag is not set, the calculation is performed based on the input calculation command and the calculation result is output.If the real-time calculation flag is set and the change output is output, it is input. And a display means for displaying the calculation result from the calculation means, which performs calculation based on the calculation command and the measurement data from the measurement data input terminal acquired this time and outputs the calculation result. It is characterized by that.

[0013]

[Action]

 The arithmetic unit according to the present invention judges whether or not the input arithmetic command includes a measurement arithmetic command, and if it does, the real-time arithmetic flag must be set and the real-time arithmetic flag must be set. For example, the calculation result is output based on the input calculation command, the calculation result is output, and if the real-time calculation flag is set, the calculation command input and the measurement data from the measurement data input terminal acquired at every predetermined time are output. Based on the above, the calculation is performed every predetermined time and the calculation result is output every predetermined time. Therefore, the calculation including the measurement data can be executed in real time.

Further, it is efficient to perform the calculation only when the measurement data changes.

[0015]

【Example】

 FIG. 1 shows a block diagram of an arithmetic unit according to an embodiment of the present invention. The data measured by the measuring means 8 is given to the calculating means 10. On the other hand, a calculation command is input from the calculation command input means 16. The continuity determination means 14 determines whether or not this calculation command includes a measurement calculation command. If the measurement calculation command is not included, the real-time calculation flag is set, and if it is not included, the real-time calculation flag is not set. The calculation means 10 executes a calculation command if the real-time calculation flag is not set, and outputs the calculation result to the display means 12. The display means 12 displays the calculation result.

On the other hand, if the real-time calculation flag is set, the measurement data from the measuring means 8 is fetched, the calculation command is executed, and the calculation result is displayed on the display means 12. If the real-time calculation flag is set, this series of processing is repeated. That is, when the output of the previous calculation result is finished, the measurement data is newly fetched, the calculation is performed, and the calculation result is output. As a result, the calculation result can be displayed in real time.

FIG. 2 shows an external view of a calculator with a tester according to an embodiment of the present invention. The main body 20 is provided with a keyboard 22 which is a calculation command input means, a measurement mode switching key 24, and an LCD display 26 which is a display means. A probe 18 for measurement is connected to the main body 20. Further, inside the main body 20, a circuit for performing calculation and a circuit for performing measurement are housed.

FIG. 3 shows a block diagram of this calculator with a tester. The arithmetic processing unit 28 performs an arithmetic operation based on the arithmetic command input from the keyboard 22. The arithmetic processing unit 28 has a RAM as shown in FIG. 4 in order to perform arithmetic operations. The calculation result of the calculation processing unit 28 is sent to the LCD display unit 26 and displayed. When the measurement mode switching key 24 of the keyboard 22 is pressed, the arithmetic processing section 28 gives a switching command to the switching circuit 34. In response to this, the switching circuit 34 controls the voltage dividing circuit 38, the current dividing circuit 40, and the constant current circuit 42 to set the corresponding measurement mode (resistance measurement mode, voltage measurement mode, current measurement mode). The measurement result is converted into digital data (measurement data) in the double integration A / D conversion circuit 36 and given to the arithmetic processing unit 28. Next, a case of measuring the current in the load 6 of the circuit shown in FIG. 15 using this calculator with a tester will be described. In the description, reference will be made to the flowcharts starting from FIG. Note that FIG. 5 is an overall flow chart, and FIG. 6 and subsequent figures are detailed flow charts. Also, the current can be measured by cutting the connection between the load 6 and the circuit network 4 and inserting a tester, but here, the description will be made assuming that the connection cannot be cut. First, the power is turned on, the probes 18 are applied to both ends of the load 6, and the voltage measurement key 24b of the measurement mode switching key 24 is pressed. As a result, the device is initialized in step S2 of FIG. A detailed flowchart of initialization is shown in FIG. In the initialization, the input / output port of the CPU of the arithmetic processing unit 28 (see FIG. 3) is initialized (step S10). Next, the RAM of the arithmetic processing unit 28 is initialized (step S11). Next, the arithmetic processing unit 28 reads in which measurement mode the measurement mode switching key 24 is set (step S12). Here, the voltage measurement mode is set, so read it. Next, the contents displayed on the LCD display 26 are cleared (step S13). After that, the LCD display 26 displays the measurement mode (step S14). Here, the voltage measurement mode is displayed. Subsequent to this, the arithmetic processing unit 28 controls the range switching circuit 44 and commands it to determine an appropriate measurement range. In response to this, the range switching circuit 44 controls the voltage dividing circuit 38, the current dividing circuit 40, and the constant current circuit 42 to perform switching so that the range is appropriate for measurement (step S15).

When the initialization is completed as described above, next, the measurement mode is checked (FIG. 5, step S3). Figure 7 shows the detailed flow chart of the measurement mode check. Here, the measurement mode (that is, which measurement mode switching key has been pressed) is read (step S20), and if the measurement mode has not changed from the previous time, the processing ends (step S21). If the measurement mode has changed since the last time, the measurement mode is changed by the switching circuit 34 (step S22). Further, the changed measurement mode is displayed on the LCD display 26 (step S23).

When the measurement mode check is completed as described above, the key read process starts. Since the current is to be measured and the voltage is actually to be measured, the current value can be obtained by dividing the measured value by the resistance value of the load 6. Here, the description will proceed assuming that the following key input is performed. That is, the "measurement" key, the "÷" key, and the "9" key are input in this order. The resistance value of the load 6 is 9 [Ω].

Detailed flow charts of the key reading are shown in FIGS. First, when the "measurement" key is input, the keywork RAM 64 stores that the "measurement" key has been input. If there is such a key input, the process proceeds to step S31 (step S30). In step S31, the arithmetic processing unit 28 reads the contents of the last key of the keywork RAM 64 (FIG. 4). Here, the "measurement" key is read. Further, in step S44 (FIG. 9), the process branches to step S45. In step S45, it is determined whether or not there is an error in the key input. For example, if the "measurement" key is pressed more than once, it is determined that an error has occurred, the buzzer 30 is sounded, and the key read processing is terminated.

If there is no error, the arithmetic processing unit 28 takes in the measured data as digital data by the A / D conversion circuit 36 (step S46). Next, the content of the real flag 62 (FIG. 4) is set to 1 and a flag is set (step S47). Next, the fetched digital data is stored in the work RAM 60 (FIG. 4) (step S48). Subsequently, the measurement data taken in is stored in the display work RAM 66 (FIG. 4) (step S49). Further, the keywork RAM 64 (FIG. 4) stores that the "measurement" key has been input (step S50). If the taken measurement data is 27 [V], the contents of the memory in the state where step S50 is completed are as shown in A of FIG. When step S50 ends, the key read process ends, and step S5 of FIG. 5 is executed.

In steps S 5 and S 6, the arithmetic processing section 28 reads the contents of the display work RAM 66 and causes the LCD display 26 to display the contents. Here, "27" is displayed. Next, it is determined whether or not there is an "=" key in the keywork RAM 64 (step S7). Here, since "=" has not been input yet, the process returns to step S3.

After the measurement mode is checked in step S3, the key reading process (step S4) is performed again. Next, when the "÷" key is input, the "÷" key is stored in the key work RAM 64 following the "Measurement" key as shown in FIG. 13B. In step S31 of FIG. 8, the final key "÷" key is read. Since the "÷" key is a calculation key, the process branches to step S64 in step S63 of FIG. After the error check is performed in step S64, the remaining data in the keywork RAM 64 is read (step S65). Here, if the operation key already exists in the keywork RAM 64, the operation is performed and the key read processing is ended (steps S68, S69, S70). Here, since there is no operation key other than the "÷" key, the contents of the keywork RAM 64 are left as they are and the key read process is terminated. The contents of the memory at this time are shown in B of FIG. When the key read process is completed in this way, the process returns to step S3 via steps S5, S6 and S7 of FIG. After the measurement mode is checked in step S3, the key read process is performed again (step S4). Next, when the "9" key is input, the "9" key is stored in the keywork RAM 64 after the "Measurement" key and the "÷" key as shown in C of FIG. In step S31 of FIG. 8, the final key "9" is read. Since the "9" key is a numerical key, the process branches to step S52 in step S51 of FIG. After the error check is performed in step S52, the key input immediately before is read from the keywork RAM 64.

When the immediately preceding key is an input / output instruction to the temporary storage memory such as “MI” or “MO”, the current numeric key is the number of the memory work RAM (memory work RAM RAM 68, 70 in FIG. 4, 72 ...), the process corresponding thereto is performed (steps S54, S55, S56, S57, S60, S61, S62). Here, since the immediately preceding key is not "MI" or "MO", step S58 is executed. In step S58, "9" is stored. The contents of the memory at this time are shown in C of FIG.

When the key read process is completed as described above, the contents of the display work RAM 66 are read out and displayed on the LCD display 26 (step S6). Therefore, "9" is displayed here. Next, in step S7, it is determined whether or not the "=" key is stored in the keyboard RAM 64. Here, since the "=" key has not been input yet, the process returns to step S3.

After the measurement mode is checked in step S3, the key reading process (step S4) is performed again. Next, when the "=" key is entered, the key RAM 64 stores the "9" key followed by the "=" key. In step S31 of FIG. 8, the last key, the "=" key, is read. The "=" key is determined in step S71 of FIG. 11, and the process branches to step S72. After the error check is performed in step S72, the "=" key is stored in the keywork RAM 64 (step S76). This state is shown in D of FIG.

Next, through steps S5 and S6, step S7 is executed. In step S7, it is determined whether or not the "=" key is stored in the keywork RAM 64. Since the "=" key is stored here, the process proceeds to step S8.

In step S8, it is determined whether or not the real flag is set. Here, since the real flag is set, the process proceeds to step S9, and the digital data from the A / D conversion circuit 36 is fetched. Next, the contents of the keywork RAM 64 are read out and the calculation is performed based on the contents (steps S10 and S11). At this time, for the "measurement" key portion, the measurement data fetched in the measurement step S9 is used as a numerical value. Here, since the measurement data is "27", the calculation result is "3". The calculation result is stored in the display work RAM 66 (step S12). Therefore, the contents of the memory at this time are as shown in D of FIG. Then, step S3 and subsequent steps are executed, and the content of the display work RAM 66 is displayed on the LCD display 26 in step S6. Therefore, it can be measured that the current value is 3 [A]. Furthermore, steps S3, S4, S5, S6, S7, S8, S9, S10, S11 and S12 are repeatedly executed. Therefore, when the state of the circuit network 4 changes and the measurement data changes, the data acquired in the measurement step S9 is used for the calculation in step S11, so that the measurement and calculation can be performed in real time. .

If the measurement key is not pressed, the real flag is not set, so that the calculation is performed only once by inputting the “=” key, as in a normal calculator.

In the above embodiment, the calculation is repeated every predetermined time, but the calculation may be performed only when the captured measurement data has changed from the previous time. In this case, as shown in FIG. 14, it is advisable to provide a change determination means 9 for determining whether or not the measurement data has changed.

Further, in the above-mentioned embodiment, the calculator having the tester as the measuring means built therein is described, but a calculator having a terminal for inputting measurement data from the tester may be used. Further, the measuring means is not limited to the tester, and may be any means such as an electronic caliper or a pressure gauge as long as it measures a physical quantity.

[0033]

[Effect of device]

 The arithmetic unit according to claim 1 or 2 determines whether or not the input arithmetic command includes a measurement arithmetic command, and if it is included, sets a real-time arithmetic flag and sets a real-time arithmetic flag. If not, the calculation is performed based on the input calculation command and the calculation result is output.If the real-time calculation flag is set, the input calculation command and the measurement data input terminal acquired at every predetermined time are input. The calculation is performed at a predetermined time based on the measurement data of, and the calculation result is output at a predetermined time. Therefore, the calculation including the measurement data can be executed in real time.

The arithmetic unit according to the third and fourth aspects is further adapted to perform the arithmetic only when the measurement data changes. Therefore, the calculation efficiency is further improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an arithmetic unit of the present invention.

FIG. 2 is an external view of the calculator of the present invention applied to a calculator with a tester.

FIG. 3 is a block diagram of the calculator with a tester of FIG.

FIG. 4 is a diagram showing details of a memory of an arithmetic processing unit 28.

FIG. 5 is a flowchart showing the overall processing.

FIG. 6 is a flowchart showing details of initialization processing.

FIG. 7 is a flowchart showing details of measurement mode check processing.

FIG. 8 is a flowchart showing details of key read processing.

FIG. 9 is a flowchart showing details of key read processing.

FIG. 10 is a flowchart showing details of key read processing.

FIG. 11 is a flowchart showing details of key read processing.

FIG. 12 is a flowchart showing details of key read processing.

FIG. 13 is a diagram showing changes in the contents of memory.

FIG. 14 is a block diagram showing an arithmetic unit according to another embodiment.

FIG. 15 is a diagram showing an example of a circuit to be measured.

[Explanation of symbols]

 8 ... Measuring means 9 ... Change determination means 10 ... Calculation means 12 ... Display means 14 ... Continuous determination means 16 ... Calculation command input means

Claims (4)

[Scope of utility model registration request] 1. A measuring means for measuring a physical quantity and outputting measurement data corresponding to the physical quantity, a calculation command inputting means for inputting a calculation command, and whether or not the input calculation command includes a measurement calculation command. Judgment, if it is included, the continuous determination means that raises the real-time calculation flag, and if the real-time calculation flag is not set, calculates based on the input calculation command and outputs the calculation result, and the real-time calculation flag is set. If standing, a calculation means for calculating at a predetermined time based on the input calculation command and the measurement data taken at a predetermined time from the measuring means and outputting a calculation result at a predetermined time, calculation from the calculation means An arithmetic unit having a real-time arithmetic function of measurement data, comprising: display means for displaying a result. 2. A measurement data input terminal for inputting measurement data corresponding to a physical quantity, a calculation command input means for inputting a calculation command, it is determined whether or not the input calculation command includes a measurement calculation command, and it is included. If it is set, the continuous determination means that sets the real-time calculation flag, if the real-time calculation flag is not set, calculates based on the input calculation command and outputs the calculation result, and if the real-time calculation flag is set , A calculation means for calculating the calculation result every predetermined time based on the inputted calculation command and the measurement data from the measurement data input terminal fetched at every predetermined time, and outputting the calculation result every predetermined time, An arithmetic unit having a real-time arithmetic function of measurement data, comprising a display unit for displaying. 3. A measurement means for measuring a physical quantity and outputting measurement data corresponding to the physical quantity at predetermined time intervals, a calculation command input means for inputting a calculation command, and a measurement calculation command included in the input calculation command. It is determined whether or not it is included, and if it is included, a continuous determination unit that sets a real-time operation flag, a determination unit that determines whether or not the measurement data has changed from the previous time, and outputs a change output if it has changed, If the time calculation flag is not set, the calculation is performed based on the input calculation command and the calculation result is output. If the real-time calculation flag is set and the change output is output, the input calculation command And a real-time calculation function of measurement data, which includes calculation means for performing calculation based on the measurement data from the measurement means acquired this time and outputting the calculation result, and display means for displaying the calculation result from the calculation means. Computing device having. 4. A measurement data input terminal for inputting measurement data corresponding to a physical quantity at predetermined time intervals, calculation command input means for inputting a calculation command, and whether or not the input calculation command includes a measurement calculation command. Judgment, if included, continuous judgment means that raises the real-time calculation flag, change judgment means that judges whether or not the measurement data has changed from the previous time, and if it has changed, real-time calculation flag If it is not set, the calculation is performed based on the input calculation command and the calculation result is output. If the real-time calculation flag is set and the change output is output, the input calculation command and this time are loaded. A real-time computer for measuring data, which includes a calculating means for performing calculation based on the measured data from the measured data input terminal and outputting the calculated result, and a display means for displaying the calculated result from the calculating means. Computing device having a.