JPH057637Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a device for checking stored information in a memory device, and more specifically, it is a device that sets an arbitrary function and further sets a numerical value related to this function. The present invention relates to a check device for a memory device which prevents another function from being input when the function is pressed.

[Technical background of the invention] For example, in the field of electrical measuring instruments, various values of constant current, constant voltage, thermoelectromotive force, etc. are applied to a load, which is an object to be measured, to measure its characteristics. There is. Current or voltage values may be measured while operating the push-button switch or dial switch that sets these values, but not only does the measurement take longer, but the complicated operations can lead to operational errors. Sometimes. Therefore, we incorporated a central processing unit (hereinafter referred to as CPU) with a memory function into the measuring equipment.
The CPU stores these values once, and when measuring
Measurements are performed under conditions based on numerical values stored in the CPU and by adding these numerical values to the load.

[Problem that the invention aims to solve] However, when inputting to the CPU, a different function is used. In other words, when setting the current value, the voltage value is set by mistake during the operation, and the CPU is turned off without realizing the mistake. When operating and applying these conditions to the load and its output equipment,
These loads may be destroyed.

Therefore, the purpose of this invention is to have a simple configuration.
To provide a memory device check device that checks the memory contents of a memory device and, when a function different from the functions stored up to that point is input, clears all the stored functions and their numerical values. It is to be.

[Means for solving the problem] This invention includes a setting means for setting arbitrary function data and set numerical value data, and a memory means for storing the function and set numerical value from this setting means. In the memory device of the electrical signal generator, the function data from the setting means is temporarily stored, and if the newly input function data is different from the already stored function data, The object of the present invention is to provide a check device for a memory device that is equipped with a control circuit that prohibits the subsequent writing of data into the memory or clears all data.

[Embodiment] An embodiment of this invention shown in the drawings will be described below.The check device includes an input device 1 for setting functions and their numerical values, and this input device
The controller 3 is provided with a control device 3 for storing the function and its device instructed by the output data memory 2. The control device 3 includes an output device 5 that outputs data stored in the output data memory 2 to a load 4 such as an object to be measured or an output device via the control device 3, and a display device 6 that displays the output contents. is connected.

As shown in FIG. 2, the input device 1 includes a function switch 11 for setting items such as voltage, current or thermoelectromotive force, ie, functions, and a data input switch 12 for setting values for these functions, ie, numerical values. It is configured. A plurality of function switches 11 may be provided for each function, or a dial switch may be provided, and the function may be designated by the rotation angle. Further, the data input switch 12 is composed of a numeric keypad, and is designed to be able to specify any numerical value.

As shown in FIG. 2, the control device 3 includes a CPU 3 that receives a signal from the data input switch 12 and is equipped with a memory (not shown) that stores the numerical value.
1, a data latch circuit 32 that receives a signal from the function switch 11, outputs it to the memory of the CPU 31, and temporarily stores the signal from the function switch 11; The stored function is compared with the next function newly specified by the function switch 11, and if they match, the signal from the data input switch 12 is stored in the output data memory 2.
A comparator 3 that instructs the CPU 31 to clear all information previously stored in the output data memory 2 if there is a mismatch.
3.

Next, the operation of this device will be explained. Assuming that the voltage is set by the function switch 11, this function data is sent to the CPU 31 via the data latch circuit 32. Next, various voltage values are set using the data input switch 12. Every time a numerical value is input from the data input switch 12, the function data stored in the data latch circuit 32 and the function data newly instructed by the function switch 11 are added to the comparator 33 and compared. be done. When the function data match, the numerical value is sent to the output data memory 2 via the CPU 31 and stored therein. If the function data do not match, the comparator 33
gives an instruction to the CPU 31 to clear all data already stored in the output data memory 2, and the CPU 31 stops writing to the output data memory 2 or clears all stored information.
The occurrence of such a mismatch may be displayed on the display device 6, or an alarm may be issued by operating a buzzer or the like (not shown).

Next, the operation of this device will be explained. Assuming that the voltage is set by the function switch 11, this function data is sent to the CPU 31 via the data latch circuit 32. Then,
Various voltage values are set by the data input switch 12. Each time a numerical value is input from the data input switch 12, the function data stored in the CPU 31 is applied to the data latch circuit 32, and this output and the function data instructed by the function switch 11 are connected to the comparator 33. are added to and compared. When the function data match, the value is the CPU
31 to the output data memory 2 for storage. If the function data do not match, the comparator 33 instructs the CPU 31 to clear all the data already stored in the output data memory 2, and the CPU 31 clears all the information stored in the output data memory 2. clear. The occurrence of such a mismatch may be displayed on the display device 6, or a warning may be issued by operating a buzzer or the like (not shown).

In the embodiment described above, each piece of numerical data is compared, and if they match, it is sent to the output data memory 2, but the data is temporarily stored in the memory of the CPU 31 until all the data have been compared. , all the numerical values may be input and, for example, when an end signal is input, they may be stored in the output data memory 2 all at once.

Also, a data latch circuit 32, a comparator 33
The function may be processed by software using the function of the CPU 31.

[Effects of the invention] As described above, the check device of this invention constantly monitors the function data using the control circuit, and if a discrepancy occurs, prohibits the subsequent writing of data to the memory or clears all data. Therefore, setting of numerical values etc. based on different functions can be prevented in advance. Therefore,
By applying condition settings in measuring equipment, etc., it is possible to set a plurality of numerical values based on one function and prevent erroneous input when applying them to a load.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the entire embodiment of this invention, and FIG. 2 is a block diagram showing the configuration of the input device and control device. In the drawing, 1 is an input device, 2 is a memory for output data, 3 is a control device, 4 is a load, 5 is an output device, 11 is a function switch, 12 is a data input switch, 31 is a CPU, and 32 is a data latch circuit. , 33 are comparators.

Claims (1)

[Claims for Utility Model Registration] (1) A utility model comprising a setting means for setting arbitrary function data and set numerical value data, and a memory means for storing the function and the set numerical value from the setting means. In the memory device of the electrical signal generator, the function data from the setting means is temporarily stored, and if newly inputted function data is different from the already stored function data, A check device for a memory device, comprising a control circuit for prohibiting subsequent writing of the data into the memory or for clearing all of the data. (2) In the description of claim 1 of the utility model registration claim, the control circuit is a central processing unit that receives the function data from the setting means and has a memory function to temporarily store the information. The device compares the set numerical values sequentially inputted from the setting means with the function stored in the central processing unit, and when the functions are different, compares the function stored in the central processing unit with the setting. 1. A check device for a memory device, comprising: a comparison circuit for instructing the central processing unit to clear all numerical values.