JPH05298195A - Information processor - Google Patents

Abstract

PURPOSE:To obtain an information processor which checkes with high accurary whether or not the data of a RAM and a clock is destroyed by a battery fault, etc., for the back-up period of time by a battery and improves the maintenance of the battery. CONSTITUTION:The information processor is provided with a battery 9 feeding a RAM 3 and a clock 4 via a switch without instantaneous break 8 during the time when the power source is turned off, a processor 1 and a ROM 2 to calculate the checksum for all the back-up data of the RAM 3 or for the memory data corresponding to a random number train by judging from the DC voltage holding time at the time of power surce turned off and the requeired time for a data processing and to detect a RAM error, a battery alarm detecting circuit 10 to detect the voltage drop of the battery 9, a temperature sensor 16 and an A/D converter 15 to detect an ambinent temperature and to quantize it and a display controller 12 and an operation display device 13 to display the fault of the battery and the information on the life to workers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device for backing up power to a RAM or a clock by using a battery,
In particular, the present invention relates to an information processing apparatus that performs information processing for checking data integrity by battery backup.

[0002]

2. Description of the Related Art FIG. 7 is a block diagram for explaining a data integrity check operation by a battery backup of an information processing apparatus including a conventional numerical control apparatus, 1 is a processor for controlling the entire apparatus, and 2 is a processor 1. ROM 3 in which a program for controlling the operation and fixed data are stored, various data other than the work area of the processor 1, for example, when this device is a numerical control device, enormous data such as parameters and machining programs are stored. RAM 4 included, 4 clock, 5 display unit, 6 keyboard for operator to input commands, 7 power supply, 8 non-instantaneous switch (for example, make-before-break switch can be used),
9 is a battery. FIG. 8 is a flowchart illustrating the operation of FIG.

The operation of FIG. 7 will be described with reference to FIG. In FIG. 7, an input power source to the power source 7 (for example, AC100
When V (not shown) is disconnected, the switch 8 is connected to the battery 9 side as shown by the dotted line, and the current of the battery 9 is supplied to the RAM 3 and the timepiece 4. Next, when the input power to the power supply 7 is turned on, the switch 8 is connected as shown by the solid line, and the current from the power supply 7 is the processor 1, ROM 2, keyboard 6,
It is also supplied to the RAM 3 and the clock 4. Processor 1
Reads the control program from the ROM 2 to operate, and FIG.
At Step 41 of the above, during the DC voltage holding period of the power supply 7, RA
The fixed data that was written in the specific adlay in M3,
The fixed data stored in the ROM 2 in advance is read, and both data are compared in Step 42 to determine whether they match. If it is determined that the two data match, the process proceeds to Step 45. If it is determined that they do not match, the processor 1 clears the RAM 3 in Step 43, then reads the fixed data from the ROM 2 and writes the fixed data in the RAM 3. Then, in Step 4, clear clock 4,
Move to Step 45.

The processor 1 checks in Step 45 whether or not the clock 4 is cleared. If the clock 4 is not cleared, the process proceeds to Step 47, and if it is cleared, the time setting instruction is given in Step 46 in the display unit 5.
Then, the process moves to Step 47 (or the battery failure may be displayed at Step 46). Since the clock is cleared, the operator knows that the memory contents were destroyed while the power was turned off, and sets the clock time. The processor 1 shifts to a normal process at Step 47 and operates according to an operator's instruction input from the keyboard 6.

[0005]

The data integrity check operation by the battery backup of the conventional information processing apparatus is performed as described above, and it is determined whether the contents stored in the RAM are destroyed or not. Since the fixed data written to a specific address is destroyed depending on whether it is destroyed or not, even if the contents of addresses other than the specific address are destroyed, it is considered normal and it shifts to normal operation, which is dangerous. There was a problem. In order to avoid this danger, a normal information processing apparatus is provided with a battery alarm detection circuit for detecting a battery voltage drop, and a protective measure is provided so as not to shift to normal operation.
However, even in this case, if the clock is cleared at the same time when the battery alarm occurs, it can be determined that the contents of the RAM have been destroyed. However, if the clock 4 is not cleared, an address other than the specific address The contents may have been destroyed, and a large amount of data stored in the RAM (for example, parameters and machining program data in the case of a numerical control device) is displayed on the operation display device and the operator can see it. However, there is a drawback in that it must be confirmed by checking or comparing with the contents of a secondary storage device such as a floppy disk. Even if the definition of the specific address is expanded and the specific address is considered to be a plurality of addresses instead of a single address, a series of addresses (hereinafter referred to as weak point addresses) that are first destroyed by the drop of the battery voltage is the IC of the RAM.
Since it depends on the manufacturer of the chip and its type,
There is a problem that the comparison of a plurality of fixed addresses is not sufficient as a RAM content check.

The present invention has been made in order to solve the above-mentioned problems, and highly accurately determines whether the contents of RAM are destroyed due to a battery failure or the like during the backup period by the battery. Information that can be detected by the data check method, and can inform the operator of the battery replacement time through the operation display means by an appropriate method depending on whether the battery is a primary battery or a secondary battery. The purpose is to obtain a processing device.

[0007]

An information processing apparatus according to the invention of claim 1 performs backup power supply from a battery to a RAM and a clock included in the apparatus while the apparatus power is off. In the device, when the power supply to the device is cut off, a determination unit that determines whether or not the checksum calculation process is completed for all the data in the backup required area of the RAM within the voltage holding time of the power supply; When the determination result of the determination means is positive when the device power is off, a checksum is calculated for all data in the backup required area of the RAM, and when the determination result of the determination means is negative, Using a predetermined random number sequence data as a check address, a checksum for the data stored at the check address in the backup required area of the RAM is set. When the device power is turned on, the checksum calculating means calculates the checksum again by the same calculation method as the previous time, and the checksum calculated by the checksum calculating means when the power is turned off in the RAM. Stored at a specific address in the backup required area, and then when the device power is turned on, the checksum calculated by the checksum calculation means is compared again with the checksum stored at the specific address.
RAM data check means for generating a RAM error signal when both data do not match, and the RAM when the RAM data check means generates a RAM error signal
And a data clearing means for clearing the clock data.

An information processing apparatus according to the invention of claim 2 is
During a period in which the device power is off, an information processing device that performs backup power supply from a battery to a RAM and a clock included in the device detects that the voltage of the battery has dropped below a predetermined value and detects a battery alarm signal. And whether the checksum calculation processing for all the data in the backup required area of the RAM is completed within the voltage holding time of the power supply of the device and the battery alarm detection circuit that generates the If the determination result of the determination means is positive when the power to the apparatus is turned off, a checksum is calculated for all data in the backup required area of the RAM, and the determination of the determination means is performed. If the result is negative, the predetermined random number sequence data is used as the check address, and the check add address in the backup required area of the RAM is used. Checksum calculation means for calculating a checksum for the data stored in the memory, and for calculating the checksum again by the same calculation method as the previous time when the device power is turned on, and the checksum calculation means. The checksum calculated when the power is cut off is the R
The checksum calculated by the checksum calculation means is stored again at a specific address in the backup required area of the AM, and when the device power is turned on, the checksum stored at the specific address is compared. RA that outputs a RAM error signal when both data do not match
When the M data check means and the battery alarm signal from the battery alarm detection circuit, the RAM error signal from the RAM data check means, or both the battery alarm signal and the RAM error signal are generated, the 2 It is provided with an alarm and error processing instructing means for displaying an instruction of a processing method corresponding to each of the generation states of the two signals to the operator through the operation display means.

An information processing apparatus according to the invention of claim 3 is
Using the data of the clock, calculate the battery charging time during power-on of the device and the battery discharging time during power-off of the device from the time of delivery of the device to the present time, and set predetermined coefficients for the charging time and discharging time, respectively. Battery life warning means for calculating the operating time of the battery by adding the multiplied products and displaying a battery life warning instruction to the operator via the operation display means when the operating time exceeds the battery life The above-mentioned claim 2
It is added to the information processing apparatus according to the invention.

An information processing apparatus according to the invention of claim 4 is,
In consideration of the temperature dependence of the battery life, a temperature sensor that detects the temperature around the battery and an A / D converter that quantizes the detection signal of the temperature sensor are included, and when the device is delivered using the data of the clock. The output data of the A / D converter are calculated by calculating the battery charging time during the power-on of the device and the battery discharging time during the power-off of the device, and multiplying the charging time and the discharging time, respectively. The operating time of the battery is calculated by adding the products obtained by multiplying the charging time and the discharging time by the corrected predetermined coefficient, respectively, and when the operating time exceeds the life of the battery, the operation display A battery life warning means with temperature correction for displaying a battery life warning instruction to an operator via the means is added to the information processing apparatus according to the invention of claim 2.

The information processing apparatus according to the invention of claim 5 is
In the information processing device that supplies power to the RAM included in the device with a secondary battery and to the RAM built-in clock with a long-life primary battery while the device power is off, A battery alarm detection circuit that detects that the voltage of the secondary battery has dropped to a predetermined value or less and generates a battery alarm signal; and, when the power supply of the device is cut off, within the voltage holding time of the power supply, the RAM A discriminating means for discriminating whether or not the checksum calculation processing is completed for all the data in the backup required area, and when the discriminating result of the discriminating means is affirmative when the device power is off, the RAM backup A checksum is calculated for all the data in the required area, and if the result of the determination by the determination means is negative, the predetermined random number sequence data is used as the check address. , A checksum for calculating the checksum for the data stored in the check address in the backup required area of the RAM, and for calculating the checksum again by the same calculation method as the previous time when the device power is turned on. The checksum calculation means stores the checksum calculated by the checksum calculation means when the power is turned off at a specific address in the backup required area of the RAM, and the checksum calculation means calculates again when the device power is turned on. The checksum stored in the specified address is compared with the checksum stored in the specific address, and a RAM error signal is generated if the two data do not match.
AM data check means, a battery alarm signal from the battery alarm detection circuit, and the RAM.
When the RAM error signal from the data check means or both the battery alarm signal and the RAM error signal are generated, the operator is instructed via the operation display means of the processing method corresponding to the generation status of the two signals. The alarm and error processing instruction means to be displayed on the display, and the time when the device power is cut off are calculated from the RAM built-in clock, and when the device power is next turned on, the time required to charge the secondary battery is calculated, Until the calculated required charging time elapses, a required charging warning means for displaying a required charging warning to the operator via the operation display means is provided.

The information processing apparatus according to the invention of claim 6 is
The battery alarm signal generated by the battery alarm detection circuit is sequentially stored in the EEPROM, and the history of the battery alarm signals stored in the EEPROM from the time of delivery of the device to the present is shown with the horizontal axis as the time from the time of delivery. , A graph in which the vertical axis is the cumulative total of the battery alarm signals, and a battery alarm history display means for displaying to the operator via the operation display means, and the RA
Using the data of the built-in clock, calculate the rechargeable battery charge time during power-on of the device and the discharge time of rechargeable battery during power-off of the device from the time of delivery of the device to the present, respectively, and calculate the charge time and the discharge time. To calculate the operating time of the secondary battery, and when the operating time exceeds the life of the secondary battery, a warning message of battery life is issued via the operation display means. A secondary battery life warning means to be displayed to an operator is added to the information processing apparatus according to the fifth aspect of the invention.

An information processing apparatus according to the invention of claim 7 is
When the cumulative total of the battery alarm signals stored in the EEPROM reaches a preset number in the battery alarm history display means of the information processing apparatus according to the invention of claim 6, or the battery alarm signal for the time The battery replacement command means for displaying a battery replacement command to the operator through the operation display means when the inclination of the cumulative graph of (1) exceeds a certain inclination angle is included.

An information processing apparatus according to the invention of claim 8 is
The checksum calculating means of the information processing apparatus according to any one of claims 1 to 7 is a random number configured by a ROM that stores predetermined random number sequence data in advance, or a processor that calculates the random number sequence data by calculation. A column data generating means is included.

[0015]

According to the first aspect of the present invention, in the information processing device for performing backup power supply from the battery to the RAM and the timepiece included in the device while the device power is off, the determining means is the device. When the power is cut off, it is determined whether the checksum calculation process for all the data in the backup required area of the RAM is completed within the voltage holding time of the power supply. If the determination result of the determination means is positive when the device power is turned off, the checksum calculation means calculates the checksum for all data in the backup required area of the RAM, and the determination result of the determination means is In the case of negative, the check sum for the data stored in the check address in the backup required area of the RAM is calculated using the predetermined random number sequence data as the check address, and thereafter, when the device power is turned on. , The checksum is calculated again by the same calculation method as the previous one. The RAM data check means stores the checksum calculated by the checksum calculation means at the time of power off at a specific address in the backup required area of the RAM, and then when the device power is turned on,
The checksum calculated by the checksum calculation means is compared with the checksum stored at the specific address, and a RAM error signal is generated when the two data do not match. The data clear means is provided for the RAM when the RAM data check means generates a RAM error signal.
And clear the clock data.

According to a second aspect of the invention, a battery alarm detection circuit is added to the configuration of the first aspect of the invention, and an alarm and error processing instruction means is provided instead of the data clear means. Is. The battery alarm detection circuit generates a battery alarm signal by detecting that the voltage of the battery that performs backup power supply to the RAM and the clock included in the device during the period when the device power is cut off has dropped below a predetermined value. To do. The alarm and error processing instruction means is provided when a battery alarm signal from the battery alarm detection circuit, a RAM error signal from the RAM data check means, or both the battery alarm signal and the RAM error signal occur. , An instruction of a processing method corresponding to each of the generation states of the two signals is displayed to the operator through the operation display means.

According to a third aspect of the invention, a battery life warning means is added to the configuration of the second aspect of the invention. The battery life warning means calculates the battery charging time during power-on of the device and the battery discharging time during power-off of the device from the time of delivery of the device to the present using the data of the clock, and the charging time and The product obtained by multiplying the discharge time by a predetermined coefficient is added to calculate the operating time of the battery, and when the operating time exceeds the life of the battery, an operator issues a warning of battery life via the operation display means. To display.

According to a fourth aspect of the invention, a battery life warning means with temperature correction is added to the configuration of the second aspect of the invention. The battery life warning unit with temperature correction includes a temperature sensor that detects a temperature around the battery and an A / D converter that quantizes a detection signal of the temperature sensor in view of the temperature dependence of the battery life, Using the clock data, calculate the battery charging time during power-on of the device and the battery discharge time during power-off of the device from the time of delivery of the device to the present time, and multiply by the charging time and discharge time respectively. Is corrected by the output data of the A / D converter, and the operating time of the battery is calculated by adding the products obtained by multiplying the charging time and the discharging time by the corrected predetermined coefficient to calculate the operating time of the battery. When the life is exceeded, a warning instruction for battery life is displayed to the operator via the operation display means.

According to a fifth aspect of the present invention, in the configuration of the second aspect of the invention, two types of batteries, a primary battery and a secondary battery, are provided and the clock is replaced with a RAM built-in clock.
Further, a charging requirement warning means is added. Then, during the period in which the device power is off, the RAM included in the device is powered by the secondary battery, and the RAM built-in clock is powered by the long-life primary battery. Further, the charging required warning means indicates the time when the device power is cut off by the R
The time required for charging the secondary battery is calculated when the device power supply is turned on next, and the charging is required via the operation display means until the calculated charging time elapses. Display a warning to the operator.

According to a sixth aspect of the present invention, a battery alarm history display means including an EEPROM and a secondary battery life warning means are added to the configuration of the fifth aspect of the invention. The battery alarm history display means,
The battery alarm signals generated by the battery alarm detection circuit are sequentially stored in the EEPROM, and the history of the battery alarm signals stored in the EEPROM from the time of delivery of the device to the present is the horizontal axis with the time from the time of delivery. A graph in which the vertical axis represents the cumulative total of the battery alarm signals is displayed to the operator via the operation display means. Further, the secondary battery life warning means is the RA
Using the data of the built-in clock, calculate the rechargeable battery charge time during power-on of the device and the discharge time of rechargeable battery during power-off of the device from the time of delivery of the device to the present, respectively, and calculate the charge time and the discharge time. To calculate the operating time of the secondary battery, and when the operating time exceeds the life of the secondary battery, a warning message of battery life is issued via the operation display means. Display to workers.

In the invention according to claim 7, the battery alarm history display means in the invention according to claim 6 includes a battery replacement command means, and the battery replacement command means comprises:
When the cumulative total of the battery alarm signals stored in the EEPROM reaches a predetermined number set in advance, or when the slope of the cumulative graph of the battery alarm signals with respect to the time exceeds a certain tilt angle, the battery replacement command is operated. It is displayed to the operator via the display means.

In the invention according to claim 8, the checksum calculating means in the invention according to any one of claims 1 to 7 includes random number sequence data generating means, and the random number sequence data generating means is configured in advance. It is configured by a ROM that stores predetermined random number sequence data or a processor that calculates the random number sequence data by calculation.

[0023]

【Example】

Example 1. FIG. 1 is a block diagram showing the configuration of an information processing apparatus according to a first embodiment of the present invention, in which 1 to 4 and 7 to 9 are exactly the same as the respective devices of the above conventional apparatus. Reference numeral 10 is a battery alarm detection circuit for detecting that the output voltage of the battery has dropped below a predetermined value, 11 is an interrupt signal output at the moment when the input power to the power supply 7 is cut off, 12 is a display controller, and 13 is an operation. It is a display device, and a display unit such as a CRT and a number of keys (not shown) for an operator to input parameters and machining programs and operation buttons (not shown) for moving the main body of the device are attached. There is. Reference numeral 16 is a temperature sensor for detecting the ambient temperature, and 15 is an A / D converter for converting an analog signal detected by the temperature sensor into a digital signal. 2 to 4 are flowcharts for explaining the operation of FIG. 1, FIG. 2 is a flowchart when the power source of FIG. 1 is turned off, FIG. 3 is a flowchart of when the power source is turned on of FIG. 1, and FIG. 4 is the battery of FIG. It is a flow chart explaining a life warning.

The operation of FIG. 1 will be described with reference to FIGS. In FIG. 1, an input power source to the power source 7 (for example, AC1
00V, not shown) is disconnected, Step 1 of FIG.
Then, the power supply 7 outputs an interrupt signal 11 to the processor 1. In Step 2, the processor 1 determines whether or not the checksum calculation processing for all the data in the backup required area of the RAM 3 is completed within the DC voltage holding time of the power supply 7. Naturally, whether or not the checksum calculation process is completed within the DC voltage holding time depends on the size of the area of the RAM 3 that needs to be backed up. If the determination result of Step 2 is YES, Step
In step 4, the checksum of the entire backup area (total value obtained by adding all the data in all areas) is calculated. See also Step
If the result of the determination in No. 2 is NO, the processor 1 generates the random number sequence data enough to complete the checksum calculation process within the DC voltage holding time of the power supply 7, or is written in the ROM 2 in advance. Read the random number sequence data,
RAM3 using the random number sequence data as a check address
Compute a checksum for the data stored at the check address of Next, in Step 5, this checksum is written in an unused specific address of the RAM 3, and in Step 6, the current data of the clock 4 is written in the RAM 3. Then, after the DC voltage holding time of the power supply 7 has passed, the non-interruptive switch 8 is connected to the battery 9 side as shown by the dotted line,
The current of the battery 9 is supplied to the RMA 3 and the timepiece 4. Further, when switching the DC power supply, the DC power supply will not be cut off even for an instant.

In FIG. 1, when the input power supply to the power supply 7 is turned on and the output DC voltage reaches a specified value, the non-interruptible switch 8 is connected as shown by the solid line, and the current from the power supply 7 is R.
It is supplied to AM3 and clock 4. Processor 1 is ROM2
The program is read from and operates, and Step 11 in FIG.
Check the battery alarm detection circuit with to see if a battery alarm signal is generated. If no battery alarm signal is generated, move to Step 13,
If a battery alarm signal is generated, Step12
To turn on the battery alarm flag. Then St
In ep13, in the power off sequence of FIG. 2, RAM
The same calculation is repeated depending on whether the checksum of all the backup data of 3 or the checksum of the address data of the random number sequence is calculated, and the checksum of the RAM 3 is calculated again. In Step 14, the calculated checksum is compared with the data stored in the specific address of the RAM 3 in Step 5 of FIG. 1 to determine whether they match.
If the comparison results in Step 14 match, Step 16
If the comparison result does not match, the processor 1 clears the data of the RAM 3 and the clock 4 at the same time as the RAM ERR (error) flag is turned on in Step 15, and St is set.
Move to ep16.

Next, at Step 16, RAM ERR
Checks whether the (error) flag is on and turns it on
If not, proceed to Step 17. The RAM ER
If the R flag is ON, the fact that the RAM 3 has been destroyed is displayed on the display unit of the operation display device 13 at Step 18, and the operator is instructed to restore the data. In response to this instruction, the operator inputs data such as parameters and machining programs at Step 19 from the operation display device 13 manually or from a secondary storage device such as a floppy disk. Further, the time of the clock 4 is set, and the process proceeds to the normal process of Step 22. In Step 17, the battery alarm flag is O
Check if you are N. If it is not turned on, it is regarded as normal and the process proceeds to the normal process of Step 22. If the flag is ON, the fact that the voltage of the battery is low is displayed on the display unit of the operation display device 13 at Step 20, and the operator is instructed to check the RAM data. Worker is St
At ep21, it is checked whether the data stored in the RAM 3 is normal or not by looking at the display section of the operation display device 13 or by comparing the data with a secondary storage device such as a floppy disk. If it has been destroyed, it is input manually or from a secondary storage device such as a floppy disk. Also, check that the time on clock 4 is correct,
If the data is destroyed, set the time data,
The process proceeds to the normal process of Step 22. In the above embodiment, the data to be calculated is a checksum because the calculation is simple, but CRC (Cyclic Redundancy) is used.
Check, cyclic redundancy check). In short, algebraic calculation is sufficient.

Next, the battery life warning operation will be described.
When the information processing apparatus is delivered, the worker writes the delivery date in the RAM 3 on the operation display device 13. Then, the processor 1 sets an initial value of zero to the operating time (hereinafter referred to as SUM) of the battery that is corrected by the ambient temperature and the charge or discharge state. When the input power to the power supply 7 is turned on and the DC voltage is supplied in Step 21 of FIG. 4, the processor 1 checks whether the SUM has exceeded the battery life. If the battery life is not exceeded, the process goes directly to Step 23. If the battery life is exceeded, Step 22 displays a message to that effect on the display unit of the operation display device 13 to warn the operator and then Step
Proceed to 23. In Step 23, the SUM is calculated while the power supply 7 is off and the information processing device is not operating. First, the power-off time from the last power-off of the power supply 7 to the current power-on 7 is calculated from the time difference of the clock 4. The time when the power supply 7 was turned off last time is Ste of FIG.
It shall be stored in the RAM 3 at p6.

Next, since the ambient temperature is unknown while the input power to the power source 7 is cut off, the ambient temperature at the time when the power source 7 is turned on is used in Step 24. This ambient temperature is detected by the temperature sensor 16 and the A / D converter 15
Then, the processor 1 reads the value converted into the digital signal. Next, in Step 25, a correction coefficient for correcting the battery operating time is calculated based on the temperature characteristics of the battery 9 and the discharge state of the battery during power interruption. Then S
At step 26, the product of the power-off time and the correction coefficient is added to the cumulative SUM (battery operating time) up to that point,
It is a new SUM.

Next, the input power to the power supply 7 is turned on,
SUM is calculated while the information processing device is operating. First, in Step 27, the processor 1 reads the ambient temperature in the same manner as described above. Next, a correction coefficient for correcting the battery operating time is calculated based on the temperature characteristics of the battery 9 and the state of charge of the battery during power-on. In Step29,
Similar to Step 26, the unit operating time T is added to the SUM.
The product of (where T is an appropriately set unit time such as 1 hour) and the correction coefficient is added to obtain a new SUM.
In Step 30, it is judged whether the unit operating time T has passed, and if it has not yet passed, wait until it has passed,
When time T has passed, the process returns to Step 27, and this Step
The loop processing of 27 to Step 30 is repeated until the power supply 7 is cut off.

Example 2. FIG. 5 is a block diagram showing the configuration of the information processing apparatus according to the second embodiment of the present invention.
7, 10 to 13, 15 and 16 are exactly the same as those in the first embodiment. 4A is a RAM built-in clock. Instead of the RAM built-in clock, the clock 4 and a small-capacity low-current-consumption RAM may be used as a set. 8A is a double continuous switch. Reference numeral 9A denotes a long-life primary battery, which normally backs up the RAM built-in clock 4A having a small backup current. As 9A, for example, a Li battery is used. 9B
Is a secondary battery, and backs up the RAM 3 having a large backup current depending on the system. 9B is properly used depending on the type of RAM 3, for example, MO
Ni-Cd battery is used for S static RAM, and lead storage battery is used for dynamic RAM. EEPRO is a non-volatile electrically rewritable ROM
It is M. Reference numeral 17 is a charging circuit for charging the secondary battery 9B while the power supply 7 is cut off.

FIG. 6 is a diagram showing an example of cumulative battery alarm display according to the second embodiment of the present invention. This figure is a graph in which the number of days from the delivery date of the device is plotted on the horizontal axis and the cumulative battery alarm is plotted on the vertical axis, and this graph is the operation display device 1.
3 is displayed on the display unit.

The operation of FIG. 5 will be described with reference to FIG. In FIG. 5, when the input power to the power supply 7 of the device is cut off and the DC voltage holding time of the power supply 7 is exceeded, the double switch 8A
Is a long-life primary battery 9A and secondary battery 9 as shown by the dotted line.
It is connected to the B side and the current of the secondary battery 9B is supplied to the RAM 3 (hereinafter referred to as discharging). By this discharge, the secondary battery 9
A chemical change occurs inside B, and the internal energy capacity decreases. Next, when the input power supply to the power supply 7 is turned on and the output DC voltage becomes a specified value, the double switch 8A is connected as shown by the solid line and current is supplied from the power supply 7 to the RAM 3 and the RAM built-in clock 4A. , The secondary battery 9B is charged via the charging circuit 17. The time Tm required for charging the secondary battery 9B is Tm = power-off time × charging current ÷ discharging current, and the processor 1 calculates this time Tm using the RAM built-in clock 4A, and this charging time is Until that time, the display unit of the operation display device 13 is warned to that effect. If the discharge current during power-off is large, the energy in the secondary battery 9B may be almost consumed. In this case, if the battery is one of the secondary batteries 9B, the above calculation cannot be performed. .. Therefore, in the second embodiment of FIG. 5, a long-life primary battery 9A that backs up the RAM built-in clock 4A having a small backup current and a secondary battery 9B that backs up the RAM 3 that has a large backup current depending on the system are used. Is provided. The backup of the time data when the power is turned off is not the RAM 3 but the RAM inside the RAM built-in clock 4A.

When the power is turned off and the battery is left for a long time, the battery alarm detection circuit 10 is activated when the power is next turned on. In this case, the processor 1 reads the current time from the RAM built-in clock 4A. EEPRO
Write to M14. If the RAM built-in clock 4A has sufficient RAM capacity, it may be written in this RAM. Then, as shown in FIG. 6, a graph in which the history of battery alarms from the time of delivery of the information processing apparatus to the present is plotted on the horizontal axis of the number of days from the delivery date and the vertical axis of the cumulative total of battery alarms is displayed on the operation display device 13. Display on the display.
Further, the processor 1 uses this graph to display C of the operation display device 13 when the cumulative number of battery alarms reaches a certain number or the inclination of the graph exceeds a certain inclination angle.
A battery replacement command such as "replace batteries" is displayed on the RT screen.

[0034]

As described above, according to the present invention, in the information processing apparatus in which the battery and the RAM included in the apparatus are backed up from the battery while the apparatus power is off, the apparatus power source is At the time of disconnection, it is determined whether or not the checksum calculation processing for all the data in the backup required area of the RAM is completed within the voltage holding time of the power supply. If the determination result is affirmative, , The RA
A checksum is calculated for all the data in the backup required area of M, and when the result of the determination is negative, the predetermined random number sequence data is used as the check address and the RA
A checksum for the data stored in the check address in the backup required area of M is calculated and stored in a specific address in the backup required area of the RAM. Then, when the device power is subsequently turned on, the checksum calculated again by the same calculation method as the previous time is compared with the checksum stored in the specific address, and if both data do not match, a RAM error signal Since the data of the RAM and the clock are cleared at the same time, the battery is backed up by the highly accurate data check method regardless of the type of the RAM within the holding time of the DC voltage of the power supply. You can check whether the RAM data is normal.

According to the present invention, a battery alarm detection circuit is added to the above invention, and the voltage of the battery for performing backup power supply to the RAM and the clock included in the device during a period when the device power is off is predetermined. A battery alarm signal is generated by detecting that the voltage has dropped below the specified value. And without automatically clearing the RAM and clock data,
Whether the battery alarm signal or the RAM error signal is generated, or both the battery alarm signal and the RAM error signal are generated,
Since the instruction of the processing method corresponding to each abnormal situation is displayed to the operator through the operation display means, even if the checksums match, a battery alarm signal is generated and the data in the RAM is destroyed. Even if the probability is extremely low, data corruption can be seen. Further, in this case, it is presumed that the number of breakage points is extremely small, and therefore repair can be performed manually even while observing the display of the operation display means.

According to the present invention, the battery charge time during power-on of the device and the battery discharge time during power-off of the device from the time of delivery of the device to the present time are calculated using the data of the clock, When the operating time of the battery is calculated by adding the product obtained by multiplying the charging time and the discharging time by a predetermined coefficient, respectively, and when the operating time exceeds the battery life, a warning instruction for battery life is issued via the operation display means. Since it is displayed to the operator, it is not necessary to use the battery whose life has expired without knowing it, and it is troublesome to take out the battery inside the device and check the date of manufacture of the battery to check the battery replacement time. It becomes unnecessary.

Further, according to the present invention, in view of the temperature dependence of the battery life, a temperature sensor for detecting the temperature around the battery, and an A / D converter for quantizing the detection signal of the temperature sensor and supplying it to the processor. Is provided, the battery operating time is calculated using the coefficient corrected according to the ambient temperature, and when the operating time exceeds the battery life, the operator is given a battery life warning instruction through the operation display means. Since it is displayed on, the battery life warning can be issued with higher accuracy.

According to the invention, in the above invention,
There are two types of batteries, a primary battery and a secondary battery, and the clock is R
Instead of the AM built-in clock, during the period when the power supply of the device is cut off, the RAM included in the device is charged by the secondary battery and the RA
Power is supplied to the M built-in timepiece by a long-life primary battery. Then, the time when the device power is turned off is set to the RA
M The time required for charging the secondary battery is calculated when the device power is turned on, and the required charging time is calculated through the operation display means until the calculated required charging time elapses. I've shown the warning to the worker,
After the information processing equipment is delivered, it will be stored in a warehouse for a long time, or if the secondary battery has no internal energy, such as when it has not been used for a long time. Write the machining program to RAM,
After that, it is possible to prevent the destruction of the RAM data when the power is turned off with insufficient charging.

Further, according to the present invention, the EEPR is added to the above invention.
A battery alarm history display means including an OM is provided, and the battery alarm history display means sequentially stores the alarm signals generated by the battery alarm detection circuit in the EEPROM, and the EE is provided from the time of delivery of the apparatus to the present.
The history of the battery alarm signals stored in the PROM is displayed to the operator via the operation display means by a graph in which the horizontal axis represents the time from the time of delivery and the vertical axis represents the cumulative total of the battery alarm signals. Therefore, the history of battery alarms can be seen at a glance, which is convenient for maintenance and inspection.

Further, according to the present invention, the battery alarm history display means includes a battery replacement command means, and the battery replacement command means reaches a preset number of battery alarm signals stored in the EEPROM. In this case, or when the inclination of the cumulative graph of the battery alarm signal with respect to the above time exceeds a certain inclination angle, the battery replacement instruction is displayed to the operator via the operation display means, so that the secondary operation is simply performed. It is not necessary to charge the battery, but it is possible to judge whether the secondary battery has reached the end of its life, whether the secondary battery has some trouble, or the like.

Further, according to the present invention, in each of the above inventions, the means for generating the random number sequence data is constituted by a ROM for storing predetermined random number sequence data in advance, or a processor for calculating the random number sequence data by calculation. Therefore, it is possible to calculate the checksum at high speed by using the random number sequence data read from the ROM, or to generate the random number sequence data by the processor to save the memory capacity. You have the freedom to do so.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an information processing apparatus according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation when the power supply of FIG. 1 is turned off.

FIG. 3 is a flowchart illustrating an operation at the time of turning on the power supply in FIG.

FIG. 4 is a flowchart illustrating a life warning of the battery of FIG.

FIG. 5 is a block diagram showing a configuration of an information processing apparatus according to a second embodiment of the present invention.

FIG. 6 is a diagram showing a battery alarm cumulative display example according to the second embodiment of the present invention.

FIG. 7 is a block diagram illustrating a data integrity check operation by battery backup of an information processing apparatus including a conventional numerical control apparatus and the like.

FIG. 8 is a flowchart illustrating the operation of FIG.

[Explanation of symbols]

 1 processor 2 ROM 3 RAM 4 clock 4A RAM built-in clock 5 display section 6 keyboard 7 power supply 8 no-interruption switch 8A two consecutive no-interruption switch 9 battery 9A long life primary battery 9B secondary battery 10 battery alarm detection circuit 110% Embedded signal 12 Display controller 13 Operation display device 14 EEPROM 15 A / D converter 16 Temperature sensor 17 Charging circuit

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 27, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

The operation of FIG. 7 will be described with reference to FIG. In FIG. 7, an input power source to the power source 7 (for example, AC100
When V (not shown) is disconnected, the switch 8 is connected to the battery 9 side as shown by the dotted line, and the current of the battery 9 is supplied to the RAM 3 and the timepiece 4. Next, when the input power to the power supply 7 is turned on, the switch 8 is connected as shown by the solid line, and the current from the power supply 7 is the processor 1, ROM 2, keyboard 6,
It is also supplied to the RAM 3 and the clock 4. Processor 1
Reads the control program from the ROM 2 to operate, and FIG.
At Step 41 of the above, during the DC voltage holding period of the power supply 7, RA
Fixed data written to a specific address in M3,
The fixed data stored in the ROM 2 in advance is read, and both data are compared in Step 42 to determine whether they match. If it is determined that the two data match, the process proceeds to Step 45. If it is determined that they do not match, the processor 1 clears the RAM 3 in Step 43, then reads the fixed data from the ROM 2 and writes the fixed data in the RAM 3. Then, the clock 4 is cleared at Step 44, and the process proceeds to Step 45.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction content]

[0015]

According to the first aspect of the present invention, in the information processing device for performing backup power supply from the battery to the RAM and the timepiece included in the device while the device power is off, the determining means is the device. When the power is cut off, it is determined whether the checksum calculation process for all the data in the backup required area of the RAM is completed within the voltage holding time of the power supply. If the determination result of the determination means is positive when the device power is turned off, the checksum calculation means calculates the checksum for all data in the backup required area of the RAM, and the determination result of the determination means is In the case of negative, using a predetermined random number sequence data as a check address, a checksum for the data stored in the check address in the backup required area of the RAM is calculated, and then when the device power is turned on, The checksum is calculated again using the same calculation method as the previous one. The RAM data checking means stores the checksum calculated by the checksum calculating means when the power is turned off at a specific address in the backup required area of the RAM, and then the checksum calculating means is operated when the device power is turned on. The recalculated checksum is compared with the checksum stored at the specific address, and if the two data do not match, a RAM error signal is generated. The data clear means is provided for the RAM when the RAM data check means generates a RAM error signal.
And clear the clock data.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

In FIG. 1, when the input power supply to the power supply 7 is turned on and the output DC voltage reaches a specified value, the non-interruptible switch 8 is connected as shown by the solid line, and the current from the power supply 7 is R.
It is supplied to AM3 and clock 4. Processor 1 is ROM2
The program is read from and operates, and Step 11 in FIG.
Check the battery alarm detection circuit with to see if a battery alarm signal is generated. If no battery alarm signal is generated, move to Step 13,
If a battery alarm signal is generated, Step12
To turn on the battery alarm flag. Then St
In ep13, in the power off sequence of FIG. 2, RAM
The same calculation is repeated depending on whether the checksum of all the backup data of 3 or the checksum of the address data of the random number sequence is calculated, and the checksum of the RAM 3 is calculated again. At Step 14, the calculated checksum is compared with the data stored at the specific address of the RAM 3 at Step 5 of FIG. 2 and it is determined whether they match.
If the comparison results in Step 14 match, Step 16
If the comparison result does not match, the processor 1 clears the data of the RAM 3 and the clock 4 at the same time as the RAM ERR (error) flag is turned on in Step 15, and St is set.
Move to ep16.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

The operation of FIG. 5 will be described with reference to FIG. In FIG. 5, when the input power to the power supply 7 of the device is cut off and the DC voltage holding time of the power supply 7 is exceeded, the double switch 8A
Is a long-life primary battery 9A and secondary battery 9 as shown by the dotted line.
It is connected to the B side and the current of the secondary battery 9B is supplied to the RAM 3 (hereinafter referred to as discharging). By this discharge, the secondary battery 9
A chemical change occurs inside B, and the internal energy capacity decreases. Next, when the input power supply to the power supply 7 is turned on and the output DC voltage becomes a specified value, the double switch 8A is connected as shown by the solid line and current is supplied from the power supply 7 to the RAM 3 and the RAM built-in clock 4A. , The secondary battery 9B is charged via the charging circuit 17. The time Tm required to charge the secondary battery 9B is Tm = power-off time × discharge current ÷ charge current, and the processor 1 calculates this time Tm using the RAM built-in clock 4A, and this charge required time Until that time, the display unit of the operation display device 13 is warned to that effect. If the discharge current during power-off is large, the energy in the secondary battery 9B may be almost consumed. In this case, if the battery is one of the secondary batteries 9B, the above calculation cannot be performed. .. Therefore, in the second embodiment of FIG. 5, a long-life primary battery 9A that backs up the RAM built-in clock 4A having a small backup current and a secondary battery 9B that backs up the RAM 3 that has a large backup current depending on the system are used. Is provided. The backup of the time data when the power is turned off is not the RAM 3 but the RAM inside the RAM built-in clock 4A.

[Procedure Amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

When the power is turned off and the battery is left for a long time, the battery alarm detection circuit 10 is activated when the power is next turned on. In this case, the processor 1 reads the current time from the RAM built-in clock 4A. EEPRO
Write to M14. If the RAM built-in clock 4A has sufficient RAM capacity, it may be written in this RAM. Then, as shown in FIG. 6, a graph in which the history of battery alarms from the time of delivery of the information processing apparatus to the present is plotted on the horizontal axis of the number of days from the delivery date and the vertical axis of the cumulative total of battery alarms is displayed on the operation display device 13. Display on the display.
Further, the processor 1 uses this graph to display C of the operation display device 13 when the cumulative number of battery alarms reaches a certain number or the inclination of the graph exceeds a certain inclination angle.
A battery replacement command such as "replace batteries" is displayed on the RT screen. If the power is turned off without charging for a predetermined charging time after a battery alarm occurs, the cumulative count will be unnecessarily large and the slope of the graph will be incorrect. The dead zone is provided and the battery alarms that occur consecutively in a short time are not accumulated.

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Claims (8)

[Claims] 1. An information processing apparatus, wherein backup power is supplied from a battery to a RAM and a clock included in the device during the period when the device power is off, when the device power is off A determination means for determining whether or not the checksum calculation processing is completed for all the data in the backup required area of the RAM within the holding time; and a determination result of the determination means when the device power is off, when the determination result is affirmative. Calculates a checksum for all the data in the backup required area of the RAM, and when the determination result of the determination means is negative, a predetermined random number sequence data is used as a check address in the backup required area of the RAM. While calculating the checksum for the data stored in the check address of, when the device power is turned on thereafter, Checksum calculation means for calculating the checksum again by the same calculation method as that of the first time, and the checksum calculated by the checksum calculation means at the time of power-off is stored in a specific address in the backup required area of the RAM, and then the device When the power is turned on, the checksum calculated by the checksum calculation means is compared with the checksum stored in the specific address, and a RAM error signal is generated when the two data do not match each other. An information processing apparatus comprising: means and a data clear means for clearing the data of the RAM and the clock when the RAM data check means generates a RAM error signal. 2. An information processing device, wherein backup power is supplied from a battery to a RAM and a clock included in the device while the device power is off, detects that the voltage of the battery drops below a predetermined value. And a battery alarm detection circuit for generating a battery alarm signal, and a checksum calculation process for all the data in the backup required area of the RAM within the voltage holding time of the power supply when the device power supply is cut off. Determining means for determining whether or not to complete, and when the determination result of the determining means is positive when the device power is turned off, a checksum is calculated for all data in the backup required area of the RAM, If the determination result of the determination means is negative, a predetermined random number sequence data is used as a check address in the backup required area of the RAM. Checksum calculation means for calculating the checksum for the data stored in the check address, and for calculating the checksum again by the same calculation method as the previous time when the device power is turned on. The checksum calculated by the means when the power is turned off is stored in a specific address in the backup required area of the RAM, and when the device is powered on thereafter, the checksum calculated again by the checksum calculating means and the specific address The RAM data check means for comparing the checksum stored in the above and a RAM error signal when both data do not match, the battery alarm signal from the battery alarm detection circuit, and the RAM data check means from the RAM data check means. R
When both the AM error signal or both the battery alarm signal and the RAM error signal are generated, an alarm for displaying a processing method instruction corresponding to the generation status of the two signals to the operator via the operation display means, and An information processing apparatus comprising: error processing instruction means. 3. The battery charge time during power-on of the device and the battery discharge time during power-off of the device from the time of delivery of the device to the present time are calculated using the data of the clock, and the charge time and discharge time are calculated. To calculate the operating time of the battery, and when the operating time exceeds the life of the battery, display a battery life warning instruction to the operator via the operation display means. 3. The information processing apparatus according to claim 2, further comprising a battery life warning unit that operates. 4. In view of temperature dependence of battery life, a temperature sensor for detecting a temperature around a battery and an A / D converter for quantizing a detection signal of the temperature sensor are used, and data of the timepiece is used. The battery charging time during power-on of the device and the battery discharge time during power-off of the device from the time of delivery of the device to the present time are respectively calculated, and a predetermined coefficient for multiplying the charging time and the discharging time by the A / D When the operating time of the battery is calculated by adding the products obtained by multiplying the charging time and the discharging time by the corrected predetermined coefficient by the output data of the converter and then adding the products, and the operating time exceeds the life of the battery. The information processing apparatus according to claim 2, further comprising temperature-corrected battery life warning means for displaying a battery life warning instruction to an operator via the operation display means. 5. Information processing for supplying power to a RAM included in the device by a secondary battery and to a RAM built-in clock by a long-life primary battery while the device power is off. In a device, a battery alarm detection circuit that detects that the voltage of the secondary battery has dropped to a predetermined value or less and generates a battery alarm signal; and a voltage holding time of the power supply when the device power is cut off. In the case where the determination result of the determination means at the time of power-off of the device is affirmative, the determination means determines whether or not the checksum calculation processing for all the data in the backup required area of the RAM is completed. , A checksum is calculated for all data in the backup required area of the RAM, and if the determination result of the determination means is negative, the predetermined random number sequence data is checked. A checksum for the data stored in the check address in the backup required area of the RAM is calculated as the master address, and when the device power is turned on, the checksum is calculated again by the same calculation method as the previous time. Checksum calculating means for storing the checksum calculated by the checksum calculating means at the time of power-off at a specific address in the backup required area of the RAM, and then the checksum calculating means when the device power is turned on. RAM data check means for comparing the checksum calculated again by the checksum stored in the specific address and generating a RAM error signal when the two data do not match, and a battery alarm from the battery alarm detection circuit. Signals and combs are used to check the RAM data R from
When both the AM error signal or both the battery alarm signal and the RAM error signal are generated, an alarm for displaying a processing method instruction corresponding to the generation status of the two signals to the operator via the operation display means, and Error processing instructing means and the device power-off time are calculated from the RAM built-in clock, and when the device power is next turned on, the rechargeable battery charging time is calculated, and the calculated charging time is calculated. And a charging requirement warning means for displaying a charging requirement warning to the operator via the operation display means until the time elapses. 6. An EEPROM for sequentially storing a battery alarm signal generated by the battery alarm detection circuit.
Including the above, the EEP from the time of delivery of the device to the present
A battery alarm displayed on the history display of the battery alarm signal stored in the ROM via the operation display means to the operator by a graph in which the horizontal axis represents the time from the time of delivery and the vertical axis represents the cumulative total of the battery alarm signals. The history display means and the data of the RAM built-in clock are used to calculate the secondary battery charging time during power-on of the device and the secondary battery discharging time during power-off of the device from the time of delivery of the device to the present time, A product obtained by multiplying the charge time and the discharge time by a predetermined coefficient is added to calculate the operating time of the secondary battery, and when the operating time exceeds the life of the secondary battery, the operation display means is used. The information processing apparatus according to claim 5, further comprising secondary battery life warning means for displaying a battery life warning instruction to an operator. 7. The battery alarm history display means,
When the cumulative total of the battery alarm signals stored in the EEPROM reaches a preset number, or when the slope of the cumulative graph of the battery alarm signals with respect to the time exceeds a certain tilt angle, a battery replacement command is issued. The information processing apparatus according to claim 6, further comprising a battery replacement commanding unit that is displayed to an operator via the operation display unit. 8. The checksum calculation means includes random number sequence data generation means configured by a ROM that stores predetermined random number sequence data in advance, or a processor that calculates the random number sequence data by calculation. The information processing apparatus according to any one of claims 1 to 7.