JP2015225229A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately and efficiently grasp a voltage drop amount at the time of executing a function on the basis of an installation environment and appropriately determine whether the function can be executed.SOLUTION: An electronic apparatus includes a plurality of action parts using a power source voltage supplied from the outside and makes a predetermined action part warm-up operate, and after that, can execute the function for making one or more action parts act. The electronic apparatus stores in advance a reference initial drop amount/reference action drop amount as a voltage drop amount by a warm-up action/each action part, and defines a difference between a standard voltage of the power source voltage and the measurement value of the power source of the warm-up action starting time as an exogenous drop amount, and defines a ratio of the difference between the measurement value and the measurement value of the power source voltage during a warm-up action to the reference initial drop amount and a product of the reference action drop amount are defined as a correction drop amount and when the maximum value of the sum of the correction drop amount corresponding to each action part simultaneously acting at the time of executing the function does not exceed the threshold drop amount, the function is executed.

Description

  The present invention relates to an electronic device, and more particularly, to a technique for grasping a voltage drop amount when a function is executed before the function is executed.

  Conventionally, since a plurality of electronic devices are connected to a commercial power outlet, the power supply voltage input to each electronic device drops, thereby increasing the possibility of the operation of each electronic device becoming unstable. It is known.

  Therefore, for example, as described in Patent Document 1 below, whether or not there is an abnormality in the power supply depending on whether or not the input power supply voltage exceeds a total value of a predetermined voltage drop amount corresponding to the unit in operation. An image forming apparatus is known that displays a warning when there is an abnormality or stops an operating unit. The predetermined voltage drop amount corresponding to the unit is determined in an initial measurement mode performed at a predetermined time such as before shipment of the image forming apparatus or at the beginning of installation, and stored in a table. Specifically, in this initial measurement mode, each unit is individually operated to measure the amount of power supply voltage drop during operation of each unit, and the measured value is a predetermined voltage drop corresponding to each unit. A process of storing the quantity in the table is performed.

JP 2010-20150 A

  However, using the technique described in Patent Document 1, in order to determine whether there is an abnormality in the power supply voltage when each operation unit provided in the electronic device is operating, before executing the function, It is necessary to measure the amount of voltage drop of the power supply voltage when each operation unit is individually operated and store it in the storage unit. In other words, when another electronic device is connected to an outlet of a commercial power supply, for example, the amount of power supply voltage input to the electronic device becomes different, it is necessary to take the above-mentioned trouble each time.

  The present invention has been made in view of such circumstances, and before executing a function, the voltage drop amount at the time of executing the function can be appropriately and efficiently grasped according to the installation environment of the electronic device. An object of the present invention is to provide an electronic device capable of appropriately determining whether or not a function can be executed based on the grasped voltage drop amount at the time of executing the function.

  The electronic apparatus according to the present invention, after performing a warm-up operation of a plurality of operation units that operate using a power supply voltage supplied from an external power supply, a measurement unit that measures the power supply voltage, and the predetermined operation unit, A function execution unit capable of executing a function of operating one or more operation units at a predetermined operation timing, a reference initial drop amount predetermined as a voltage drop amount by the warm-up operation, and an operation of each operation unit A voltage between a storage unit that stores a predetermined reference operation drop amount as a voltage drop amount, a predetermined standard voltage of the power supply voltage, and a start voltage measured by the measurement unit at the start of the warm-up operation The difference is calculated as the external drop amount, and the voltage difference between the starting voltage and the voltage measured by the measurement unit during the warm-up operation is calculated as the actual drop amount. A drop amount calculating unit that calculates a product of a ratio of the actual drop amount to the reference initial drop amount and the reference operation drop amount corresponding to each operation unit as a correction drop amount corresponding to each operation unit An amount correction unit, and when the sum of the correction drop amounts corresponding to the operation units operating simultaneously at the time of execution of the function is maximized, the sum is calculated as a maximum operation drop amount, and the maximum operation drop amount is An execution control unit that causes the function execution unit to execute the function when the sum of the extrinsic drop amount does not exceed a predetermined threshold drop amount.

  According to this configuration, the voltage difference between the predetermined standard voltage of the power supply voltage and the start voltage measured at the start of the warm-up operation performed before executing the function is calculated as the external cause drop amount. Further, the voltage difference between the starting voltage and the measured voltage during the warm-up operation is calculated as the actual drop amount.

  In other words, even if the power supply voltage supplied to the electronic device is dropped by being used by another electronic device other than the electronic device, the voltage drop amount is appropriately set according to the installation environment of the electronic device. It can be calculated as an extrinsic drop amount. In addition, the voltage drop amount due to the warm-up operation performed before the execution of the function can be appropriately calculated as the actual drop amount according to the installation environment of the electronic device.

  Further, according to the configuration of the invention, the product of the ratio of the actual drop amount to the reference initial drop amount and the reference action drop amount corresponding to each predetermined operation unit is used as the correction drop amount corresponding to each operation unit. calculate.

  In other words, the ratio of the actual drop amount, which is the voltage drop amount due to the actual warm-up operation in the electronic device after installation, to the reference initial drop amount determined without considering the installation environment of the electronic device, is used. The reference operation drop amount, which is the voltage drop amount due to the operation of each operation unit determined without considering the installation environment, can be corrected to the correction drop amount taking into account the installation environment of the electronic device.

  Thus, according to the configuration of the above invention, the reference operation drop amount stored in the storage unit can be corrected to the correction drop amount that takes into account the installation environment of the electronic device. The same reference action drop amount as that stored in the unit can be stored in the storage unit of another electronic device having the same specifications as the electronic device.

  As a result, the operation of each operation unit was performed without the need to measure and store the voltage drop amount when each operation unit was individually operated in advance for each device, which was necessary in the prior art. Can be grasped as a corrected drop amount appropriately and efficiently in accordance with the installation environment of the electronic device.

  Then, when the sum of the correction drop amounts corresponding to the operation units operating simultaneously at the time of executing the function is maximized, the sum is calculated as the maximum operation drop amount. Then, the function is executed when the sum of the maximum action drop amount and the external cause drop amount does not exceed the threshold drop amount.

  As a result, the sum of the extrinsic drop amount calculated before the function is executed and the maximum operation drop amount is added to the voltage drop amount due to the operation of the other electronic device, and the function is executed according to the installation environment of the electronic device. It is possible to appropriately and efficiently grasp the maximum voltage drop amount, and appropriately determine whether or not to execute the function depending on whether or not the grasped voltage drop amount exceeds the threshold drop amount.

  In addition, when the sum of the maximum operation drop amount and the external cause drop amount exceeds the threshold drop amount, the execution control unit determines the operation timing as the sum of the maximum operation drop amount and the external cause drop amount. When it is possible to change to another operation timing that does not exceed the threshold drop amount, it is preferable to cause the function execution unit to execute the function using the other operation timing.

  According to this configuration, even when the sum of the maximum operation drop amount and the extrinsic drop amount exceeds the threshold drop amount, the maximum operation drop amount is the threshold drop when the operation timing of each operation unit is executed when the function is executed. When it is possible to change to another operation timing that does not exceed the amount, the function can be executed using the other operation timing. In this way, by reducing the amount of voltage drop when executing the function, the opportunity to execute the function can be increased, so that the convenience of the electronic device can be improved.

  In addition, a warning notification unit that notifies a warning that the function cannot be executed due to power shortage, and the execution control unit, when the sum of the maximum operation drop amount and the external cause drop amount exceeds the threshold drop amount In addition, when the operation timing cannot be changed to another operation timing that prevents the sum of the maximum operation drop amount and the extrinsic drop amount from exceeding the threshold drop amount, the function execution unit is provided with the function It is preferable that the warning is notified to the warning notifying unit without executing.

  According to this configuration, the sum of the maximum operation drop amount and the extrinsic drop amount exceeds the threshold drop amount, and the maximum operation drop amount is the threshold drop amount. When it is impossible to change to another operation timing that does not exceed, a warning that the function cannot be executed due to insufficient power is notified by the warning notification unit. For this reason, the user can grasp in advance that the function cannot be executed due to power shortage. This makes it easier for the user to take measures to eliminate the power shortage.

  An instruction receiving unit that receives an execution priority instruction that prioritizes execution of the function while avoiding power shortage; and when the execution priority instruction is received by the instruction receiving unit, the operation timing is set to the maximum operation It is preferable to further include a timing changing unit that changes the operation timing to minimize the drop amount.

  According to this configuration, when an execution priority instruction is received by the instruction receiving unit, the function is executed at an operation timing that minimizes the voltage drop amount during function execution. For this reason, when the user wants to reduce the amount of voltage drop during function execution as much as possible, such as when the power supply voltage supplied to the electronic device is also to be used for other electronic devices, the execution priority instruction is given to the instruction receiving unit. By performing the receiving operation, the function can be executed with the voltage drop amount as small as possible.

  According to the present invention, it is possible to appropriately and efficiently grasp the voltage drop amount at the time of executing the function according to the installation environment of the electronic device before executing the function. It is possible to provide an electronic device that can appropriately determine whether or not a function can be executed based on the above.

1 is a block diagram illustrating an electrical configuration of a multifunction machine 1 according to an embodiment of an electronic apparatus according to the present invention. It is a figure which shows an example of the reference | standard initial drop amount memorize | stored in the memory | storage part, and the reference | standard operation | movement drop amount corresponding to each operation | movement part. It is a flowchart which shows the calculation operation | movement of the extrinsic drop amount and correction | amendment drop amount by a drop amount calculation part and a drop amount correction | amendment part. It is a figure which shows an example of correction | amendment drop amount. It is a flowchart which shows the operation | movement which determines whether an execution control part makes a function execution part perform a function. It is a figure which shows an example of the relationship between the operation timing of each operation part at the time of execution of each function, and the maximum operation drop amount. It is a figure which shows an example of the relationship between the other operation timing when performing the copy function with a sort and a staple function, and the maximum operation | movement drop amount. It is a figure which shows an example of the relationship between the operation timing changed by the timing change part, and the largest operation | movement drop amount.

  Hereinafter, an embodiment of an electronic apparatus according to the invention will be described with reference to the drawings. In the present embodiment, a multifunction peripheral is described as an example of an electronic device. However, the electronic device is not limited to this, and the electronic device may be an image processing apparatus such as a copying machine, a scanner, or a facsimile machine, or a personal computer. An information processing apparatus such as

  FIG. 1 is a block diagram showing an electrical configuration of a multifunction machine 1 according to an embodiment of an electronic apparatus according to the present invention. As shown in FIG. 1, the multifunction machine 1 includes a power supply unit 9, a scanner unit 21, a printing unit 22, an operation unit 23, a post-processing unit 24, a communication unit 25, and a control unit 10. ing.

  The power supply unit 9 includes a power cable 90. The power cable 90 includes a plug 901 detachably attached to a power outlet EVC of a commercial power source (external power source) and a table tap TT (extension cord) connected to the power outlet EVC.

  When the plug 901 is connected to the power outlet EVC or the table tap TT, the power supply unit 9 supplies the power supply voltage supplied from the commercial power supply via the power cable 90 to each operation unit (scanner unit 21, Print unit 22, operation unit 23, post-processing unit 24, communication unit 25, and control unit 10).

  The power supply unit 9 includes a voltage sensor 91 (measurement unit) that measures a power supply voltage supplied from a commercial power supply. The voltage sensor 91 outputs a signal indicating the measured voltage value of the power supply voltage to the control unit 10.

  The power supply unit 9 further detects that the power supply voltage supplied by the voltage sensor 91 has an abnormality in the supplied power supply voltage when the power supply voltage fluctuates by a predetermined level or more compared to a predetermined standard voltage determined by the specifications of the external power supply. As a result, a signal indicating the abnormality is output to the control unit 10. Hereinafter, as a specific example, it is assumed that the standard voltage of the power supply voltage is 100V and the predetermined level is 30% of the standard voltage, that is, 30V. Note that the standard voltage and the predetermined level of the power supply voltage are not limited to these.

  The scanner unit 21 performs a scanner operation for reading a document and generating image data representing an image of the document by using the power supply voltage supplied from the power supply unit 9. The scanner unit 21 includes an optical system unit (not shown) having a CCD (Charge Coupled Device) line sensor, an exposure lamp, and the like. The optical system unit outputs image data acquired while scanning an image of a document placed on a document table (not shown) to the control unit 10.

  The printing unit 22 uses the power supply voltage supplied from the power supply unit 9 to form an image on a sheet based on the image data input to the control unit 10, and performs a printing operation for discharging the sheet to the post-processing unit 24. Do.

  The print unit 22 includes a photosensitive drum, a charging unit, an exposure unit, a developing unit, a transfer unit, a fixing unit, and a discharge unit. The charging unit charges the surface of the photosensitive drum. The exposure unit outputs laser light based on the image data to form an electrostatic latent image on the surface of the photosensitive drum. The developing unit supplies toner to the electrostatic latent image formed on the surface of the photosensitive drum, and forms a toner image on the surface of the photosensitive drum. The transfer unit transfers the toner image formed on the surface of the photosensitive drum to a sheet. The fixing unit includes a heating roller that is heated using a power supply voltage, and the toner image is fixed to the sheet by heating the sheet on which the toner image is transferred by the heating roller. Thereby, an image represented by the image data is formed on the paper. The discharge unit discharges the sheet on which the image is formed to the post-processing unit 24.

  The operation unit 23 is provided to allow the user to perform various instruction operations on the multifunction device 1 using the power supply voltage supplied from the power supply unit 9. The operation unit 23 includes a display unit 231 for displaying information and an operation key unit 232 for allowing the user to perform various instruction operations. The display unit 231 is, for example, a liquid crystal display having a touch panel function, and displays various types of information such as an operation screen for allowing the user to perform various instruction operations. The operation key unit 232 includes, for example, various keys such as a start key for instructing start of execution of a function such as a copy function, and a numeric keypad for inputting numerical values and symbols.

  The post-processing unit 24 performs predetermined post-processing on the paper discharged from the printing unit 22 using the power supply voltage supplied from the power supply unit 9. The post-processing unit 24 includes a plurality of discharge trays (not shown), a sorting unit 241, and a stapling unit 242.

  The sort unit 241 (operation unit) uses the power supply voltage supplied from the power supply unit 9 to perform a sort operation for sorting a plurality of sheets discharged from the print unit 22 and discharging them to each discharge tray. The staple unit 242 (operation unit) uses the power supply voltage supplied from the power supply unit 9 to perform a staple operation for performing a staple process on the sheet bundle discharged to each discharge tray.

  The communication unit 25 is a communication interface circuit connected to a network (not shown) such as a LAN (Local Area Network). The communication unit 25 uses the power supply voltage supplied from the power supply unit 9 to transmit / receive various data to / from an external device (for example, a personal computer) connected to the network. For example, the communication unit 25 receives image data representing an image to be formed on a sheet by executing a printing function described later from an external device, and outputs the received image data to the control unit 10.

  The control unit 10 temporarily stores, for example, a CPU (Central Processing Unit) (not shown) that executes a predetermined calculation process, a nonvolatile memory (not shown) such as an EEPROM in which a predetermined control program is stored, and data For example, a random access memory (RAM) (not shown) and peripheral circuits thereof are provided. The control unit 10 executes various processes by causing the CPU to execute a control program stored in a nonvolatile memory or the like, and controls the operation of each operation unit.

  The power supply unit 9 also scans the scanner unit 21, the print unit 22, and the rear unit when the operation unit 23 is not operated by the user for a predetermined period of time and when no data is received by the communication unit 25. Supply of power supply voltage to the processing unit 24 is stopped. Thereby, the power consumption of the multifunction device 1 is reduced. Thereafter, when the operation of the operation unit 23 is performed by the user and data is received by the communication unit 25, the power supply unit 9 supplies the power supply voltage to the scanner unit 21, the print unit 22, and the post-processing unit 24. Restart the supply.

  Hereinafter, control of the operation of each operation unit by the control unit 10 will be described. As indicated by the solid line part in FIG. 1, the control unit 10 is, in particular, an instruction receiving unit 11, a function execution unit 12, a storage unit 13, a drop amount calculation unit 14, a drop amount correction unit 15, an execution control unit 16, and a warning. It operates as the notification unit 17.

  The instruction receiving unit 11 receives various instructions input by the operation of the operation unit 23 by the user. The various instructions include instructions for executing various functions that can be executed by the multifunction machine 1. The function is to operate one or more operation units among the scanner unit 21, the print unit 22, the sort unit 241, and the staple unit 242 at a predetermined operation timing. The multifunction device 1 is configured to be able to execute, for example, a print function, a copy function, a copy function with a sort function, and a copy function with a sort and staple function as functions. Note that the functions that can be executed by the multifunction machine 1 are not limited to these four functions.

  Specifically, the print function is a function that causes the printing unit 22 to perform a printing operation using image data received from the external device by the communication unit 25 and output to the control unit 10. The copy function is a function that causes the print unit 22 to perform a print operation using each image data output from the scanner unit 21 while causing the scanner unit 21 to perform a scanner operation.

  The copy function with sort function is to cause the sort unit 241 to perform the sort operation using each sheet discharged from the print unit 22 while operating the scanner unit 21 and the print unit 22 to execute the copy function. It is a function.

  The copy function with sorting and stapling function is a sheet on which the sorting unit 241 has finished discharging to each discharge tray while operating the scanner unit 21, the printing unit 22, and the sorting unit 241 to execute the above-described copying function with sorting function. This is a function for causing the staple unit 242 to perform a stapling operation using a bundle.

  When an instruction to execute a function is received by the instruction receiving unit 11, the function executing unit 12 performs a warm-up operation on a predetermined operation unit, and then receives the execution instruction under an instruction from the execution control unit 16 described later. Execute the indicated function. The warm-up operation is an operation necessary in advance for executing each function such as the above-described print function, and includes an operation for heating the heating roller of the fixing unit included in the print unit 22 to a predetermined temperature.

  The storage unit 13 is a part of the storage area of the nonvolatile memory provided in the control unit 10. The storage unit 13 stores a reference initial drop amount that is predetermined as a voltage drop amount by the warm-up operation and a reference operation drop amount that is predetermined as a voltage drop amount by the operation of each operation unit.

  The reference initial drop amount and each reference operation drop amount are determined based on experimental results obtained by operating each operation unit by, for example, a trial operation of a multifunction device having the same specifications as the multifunction device 1. The reference initial drop amount and each reference operation drop amount thus determined are stored in the storage unit 13 of the multifunction device having the same specifications as the multifunction device 1 before shipment.

  FIG. 2 is a diagram illustrating an example of the reference initial drop amount D0 stored in the storage unit 13 and the reference operation drop amounts D1 to D4 corresponding to the operation units. Hereinafter, as a specific example, as illustrated in FIG. 2, it is assumed that 5 V is stored in the storage unit 13 as the reference initial drop amount D0. In addition, it is assumed that 8V is stored in the storage unit 13 as a reference operation drop amount D1 that is predetermined as a voltage drop amount due to the printing operation of the printing unit 22.

  The storage unit 13 stores 2V as a reference operation drop amount D2 that is predetermined as a voltage drop amount due to the scanner operation of the scanner unit 21, and a reference that is predetermined as a voltage drop amount due to the sort operation of the sort unit 241. It is assumed that 3V is stored as the operation drop amount D3, and 2V is stored as a reference operation drop amount D4 that is determined in advance as a voltage drop amount by the staple operation of the staple unit 242. The reference initial drop amount D0 and the reference operation drop amounts D1 to D4 are not intended to be limited to the above values.

  The drop amount calculation unit 14 calculates a voltage difference between a predetermined standard voltage of the power supply voltage and a start voltage measured by the voltage sensor 91 at the start of the warm-up operation as an external cause drop amount. The drop amount calculation unit 14 calculates a voltage difference between the start voltage and the voltage measured by the voltage sensor 91 during the warm-up operation as an actual drop amount. The drop amount correction unit 15 calculates the product of the ratio of the actual drop amount to the reference initial drop amount D0 and the reference operation drop amounts D1 to D4 corresponding to each operation unit as the correction drop amount corresponding to each operation unit. .

  Hereinafter, the drop amount calculation unit 14 and the drop amount correction unit 15 will be described in detail. FIG. 3 is a flowchart showing the calculation operation of the extrinsic drop amount and the correction drop amount by the drop amount calculation unit 14 and the drop amount correction unit 15.

  As shown in FIG. 3, when a power supply voltage is supplied from a commercial power supply to the power supply unit 9 via the power cable 90 and supply of the power supply voltage from the power supply unit 9 to each operation unit is started (S1), the function is executed. The unit 12 determines that it is the start time of the warm-up operation (S2; YES), and starts the warm-up operation (S3). As described above, the function execution unit 12 also performs warming when the power supply unit 9 stops supplying the power supply voltage to the scanner unit 21, the print unit 22, and the post-processing unit 24 and then restarts the supply. It is determined that it is the start time of the up operation (S2; YES), and the warm up operation is started (S3).

  Simultaneously with the start of the warm-up operation by the function execution unit 12, the drop amount calculation unit 14 stores the voltage measured by the voltage sensor 91 in the RAM as the start voltage Vs at the start of the warm-up operation (S4). In the following description, it is assumed that the start time voltage Vs is 90 V as a specific example.

  Then, the drop amount calculation unit 14 calculates a voltage difference between the standard voltage Vd of the power supply voltage and the starting voltage Vs stored in the RAM in step S3 as the external cause drop amount De, and the calculated external cause drop amount De is stored in the RAM. Store (S5). For example, as described above, if the standard voltage Vd is 100V and the start time voltage Vs is 90V, the extrinsic drop amount De calculated in step S5 is 10V. In the following description, it is assumed that the external drop amount De is 10V as a specific example.

  For example, it is assumed that a plug of a power cable of another electronic device is connected to the table tap TT (FIG. 1). In this case, there is a possibility that the power supply voltage supplied to the multifunction device 1 may drop due to the operation of the other electronic device. That is, the drop amount calculation unit 14 calculates the amount of drop of the power supply voltage as the external cause drop amount De due to external factors such as the operation of other electronic devices that share the power supply voltage supplied from the commercial power supply to the MFP 1. To do.

  Next, the drop amount calculation unit 14 stores the measured voltage Vm measured by the voltage sensor 91 in the RAM until the warm-up operation ends (S7; NO) (S6), and when the warm-up operation ends. (S7; YES), Step S8 is executed.

  In step S8, the drop amount calculation unit 14 sets the voltage difference between the starting voltage Vs stored in the RAM in step S4 and the effective value of the measured voltage Vm measured by the voltage sensor 91 during the warm-up operation as the actual drop amount Dr. Calculate (S8). For example, if the effective value of the measurement voltage Vm is 83V and the start time voltage Vs is 90V as described above, the actual drop amount Dr calculated in step S8 is 7V (= 90V−83V). . In the following description, it is assumed that the actual drop amount Dr is 7V as a specific example.

  For example, it is assumed that the plug 901 is connected to the table tap TT (FIG. 1), and the power supply voltage is supplied to the power supply unit 9 via the table tap TT and the power cable 90. In this case, the power supply voltage may drop at the table tap TT by performing an operation such as a warm-up operation in the multifunction device 1. That is, the drop amount calculation unit 14 takes into account the amount of power supply voltage dropped due to the operation of the multifunction device 1 itself, and determines the amount of power supply voltage dropped by the warm-up operation according to the installation environment of the multifunction device 1. Calculated as the drop amount Dr.

  Next, the drop amount correction unit 15 calculates a correction ratio C (example: 1.4) that is a ratio of the actual drop amount Dr (example: 7V) to the reference initial drop amount D0 (example: 5V) (S9). . For example, as described above, if the reference initial drop amount D0 is 5V and the actual drop amount Dr is 7V, the correction ratio C calculated in step S9 is 1.4 (= 7/5). . In the following description, it is assumed that the correction ratio C is 1.4 as a specific example.

  Then, the drop amount correction unit 15 calculates the product of the correction ratio C calculated in step S9 and the reference operation drop amounts D1 to D4 corresponding to each operation unit stored in the storage unit 13 to each operation unit. The corresponding correction drop amounts Dc1 to Dc4 are calculated, and the calculated correction drop amounts Dc1 to Dc4 corresponding to the respective operation units are stored in the RAM (S10).

  FIG. 4 is a diagram illustrating an example of the correction drop amounts Dc1 to Dc4. Specifically, as shown in FIG. 4, the drop amount correction unit 15 uses the correction ratio C calculated in step S9 of 1.4 in step S10 and the reference operation drop amount D1 corresponding to the print unit 22. 11.2V, which is the product of 8V, is stored in the RAM as the correction drop amount Dc1 corresponding to the print unit 22. Similarly, the drop amount correction unit 15 uses 2.8V (= 1.4 × 2V), which is the product of the correction ratio C and the reference operation drop amount D2 corresponding to the scanner unit 21, as a correction drop corresponding to the scanner unit 21. It is stored in the RAM as a quantity Dc2.

  Further, the drop amount correction unit 15 uses 4.2V (= 1.4 × 3V), which is the product of the correction ratio C and the reference operation drop amount D3 corresponding to the sort unit 241, as the correction drop amount corresponding to the sort unit 241. 2.8 V (= 1.4 × 2 V), which is the product of the correction ratio C and the reference operation drop amount D4 corresponding to the staple unit 242, is stored as Dc 3 in the RAM as the correction drop amount Dc 4 corresponding to the staple unit 242. Store in RAM.

  In this way, whenever the function execution unit 12 determines that it is the start time of the warm-up operation (S2; YES), steps S3 to S10 are executed.

  The execution control unit 16 determines whether or not to cause the function execution unit 12 to execute the function, using the extrinsic drop amount De and the correction drop amounts Dc1 to Dc4 calculated as described above. The warning notification unit 17 notifies a warning that the function cannot be executed due to insufficient power.

  Hereinafter, an operation in which the execution control unit 16 determines whether or not to cause the function execution unit 12 to execute a function using the extrinsic drop amount De and the correction drop amounts Dc1 to Dc4 will be described in detail. In the description, details of the warning notification unit 17 will be described. FIG. 5 is a flowchart illustrating an operation in which the execution control unit 16 determines whether or not the function execution unit 12 executes a function.

  As shown in FIG. 5, when an instruction to execute a certain function is received by the instruction receiving unit 11 (S21), the execution control unit 16 ends the control of the warm-up operation by the function executing unit 12, and corrects the drop amount. Until the calculation of the correction drop amounts Dc1 to Dc4 by the unit 15 and the storage of the correction drop amounts Dc1 to Dc4 in the RAM are completed, the execution of the process is waited (S22; NO).

  Then, when the control of the warm-up operation by the function execution unit 12 is finished, and the calculation of the correction drop amounts Dc1 to Dc4 by the drop amount correction unit 15 and the storage of the correction drop amounts Dc1 to Dc4 in the RAM are finished (S22; YES), the execution control unit 16 calculates the maximum operation drop amount Dmax corresponding to the function indicated by the execution instruction received in step S21 (S23). The maximum operation drop amount Dmax indicates the sum when the sum of the correction drop amounts corresponding to the operation units operating simultaneously at the time of executing the function is maximized.

  FIG. 6 is a diagram illustrating an example of the relationship between the operation timing of each operation unit and the maximum operation drop amount Dmax when each function is executed. For example, assume that an instruction to execute a print function is received in step S21. As shown in FIG. 6, when the print function is executed, the operation timing is determined so that only the print unit 22 is operated from the start time ta1 to the end time ta2 of the execution of the print function.

  That is, since only the printing unit 22 operates from the start time ta1 to the end time ta2, the sum of correction drop amounts corresponding to the respective operation units operating simultaneously when the print function is executed is constant. Therefore, when the print function execution instruction is accepted in step S21, the execution control unit 16 operates the correction drop amount Dc1 (example: 11.2 V (FIG. 4)) corresponding to the print unit 22 to the maximum operation in step S23. Calculated as the drop amount Dmax.

  On the other hand, assume that an instruction to execute the copy function is received in step S21. As shown in FIG. 6, when the copy function is executed, the scanner unit 21 starts the scanner operation, and when the scanner unit 21 outputs image data (time tb1), the scanner unit 21 continues the scanner operation while The operation timing is determined so that the print unit 22 performs a print operation using each output image data.

  In other words, when the copy function is executed, the total sum of the correction drop amounts corresponding to the respective operation units operating simultaneously from the time tb1 when the printing unit 22 starts the operation to the time tb2 when the scanner unit 21 ends the operation is maximum. become. Therefore, when the copy function execution instruction is received in step S21, the execution control unit 16 determines in step S23 the correction drop amount Dc2 (eg, 2.8V (FIG. 4)) corresponding to the scanner unit 21 and the print unit. The total sum (example: 14V) with the correction drop amount Dc1 (example: 11.2V (FIG. 4)) corresponding to 22 is calculated as the maximum operation drop amount Dmax.

  In step S21, it is assumed that an instruction to execute the copy function with sort function is received. As shown in FIG. 6, when the copy function with sort function is executed, the scanner unit 21 and the print unit 22 are operated to execute the above copy function, and when the print unit 22 discharges paper (time tc1), The operation timing is determined so that the sort unit 241 performs the sort operation using each sheet discharged from the print unit 22 while continuing the execution of the copy function.

  That is, when the copy function with sort function is executed, the correction drop amount corresponding to each operation unit operating simultaneously from the time tc1 when the sort unit 241 starts operation to the time tc2 when the scanner unit 21 ends the operation. The sum is maximized. Therefore, when an execution instruction for the copy function with sort function is received in step S21, the execution control unit 16 corrects the correction drop amount Dc2 (eg, 2.8 V (FIG. 4)) corresponding to the scanner unit 21 in step S23. And a correction drop amount Dc1 (example: 11.2 V (FIG. 4)) corresponding to the print unit 22 and a correction drop amount Dc3 (example: 4.2 V (FIG. 4)) corresponding to the sort unit 241 (example: 18.2V) is calculated as the maximum operation drop amount Dmax.

  In step S21, it is assumed that an instruction to execute the copy function with sorting and stapling function is received. As shown in FIG. 6, when executing the copy function with sort and staple function, the scanner unit 21, the print unit 22, and the sort unit 241 are operated to execute the copy function with sort function. When the sheet bundle is completely discharged (time td1), the sort unit 241 continues to execute the copy function with sort function and uses the sheet bundle that the sort unit 241 has discharged to each discharge tray to staple the staple unit 242. The operation timing is determined so that the operation is performed.

  That is, when the copy function with sort function is executed, the correction drop amount corresponding to each operation unit that operates simultaneously from the time td1 when the staple unit 242 starts operation to the time td2 when the scanner unit 21 ends operation. The sum is maximized. Therefore, when an execution instruction for the sort and copy function with stapling function is accepted in step S21, the execution control unit 16 corrects the correction drop amount Dc2 (eg, 2.8 V (FIG. 4) corresponding to the scanner unit 21 in step S23. )), The correction drop amount Dc1 (example: 11.2 V (FIG. 4)) corresponding to the print unit 22, the correction drop amount Dc3 (example: 4.2 V (FIG. 4)) corresponding to the sort unit 241, and the staple unit 242. Is calculated as the maximum operation drop amount Dmax. The sum (example: 21V) with the correction drop amount Dc4 (example: 2.8V (FIG. 4)) corresponding to

  Returning to FIG. Next, the execution control unit 16 sets a threshold drop amount Dth that is a sum of the maximum action drop amount Dmax calculated in step S23 and the extrinsic drop amount De stored in the RAM in step S5 (FIG. 3). It is determined whether it exceeds (S24).

  The threshold drop amount Dth is determined in advance as the voltage drop amount of the power supply voltage when it is considered that the function cannot be normally executed. For example, as described above, when the power supply voltage fluctuates by a predetermined level (eg, 30 V (30% of the standard voltage)) or more compared to a predetermined standard voltage (eg, 100 V), the power supply unit 9 Is output to the control unit 10. That is, when the power supply voltage drops above the predetermined level, an abnormality occurs in the power supply voltage, and the function cannot be normally executed. For this reason, the threshold drop amount Dth is set to the same value as the predetermined level, for example. However, the threshold drop amount Dth is not limited to this. For example, the threshold drop amount Dth may be set to a value smaller than the predetermined level in order to stably execute the function. In the following description, the threshold drop amount Dth is assumed to be 30V unless otherwise specified.

  If the execution control unit 16 determines in step S24 that the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De does not exceed the threshold drop amount Dth (S24; NO), the execution instruction received in step S21 is received. The function execution part 12 is made to perform the function shown (S27). Hereinafter, the function indicated by the execution instruction received in step S21 is referred to as an execution target function.

  For example, as described above, it is assumed that the extrinsic drop amount De is 10V, the execution target function is a copy function, and the maximum operation drop amount Dmax calculated in step S23 is 11.2V (FIG. 6). In this case, in step S24, the execution control unit 16 determines that 21.2V, which is the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De, does not exceed 30V, which is the threshold drop amount Dth. The function execution unit 12 executes the function.

  On the other hand, if the execution control unit 16 determines in step S24 that the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De exceeds the threshold drop amount Dth (S24; YES), each operation is executed when the execution target function is executed. It is determined whether or not the operation timing for operating the unit can be changed to another operation timing that prevents the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De from exceeding the threshold drop amount Dth (S25).

  If the execution control unit 16 determines in step S25 that it can be changed to another operation timing (S25; YES), it changes the operation timing used when executing the execution target function to the other operation timing (S26). The function execution unit 12 is caused to execute the execution target function using the other operation timing (S27).

  For example, as described above, the extrinsic drop amount De is 10V, the execution target function is the copy function with sorting and stapling function, and the maximum operation drop amount Dmax calculated in step S23 is 21V (FIG. 6). To do. In this case, in step S24, the execution control unit 16 determines that 31V, which is the sum of the maximum operation drop amount Dmax and the external cause drop amount De, exceeds 30V, which is the threshold drop amount Dth, and performs the determination process of step S25. Do.

  FIG. 7 is a diagram illustrating an example of a relationship between another operation timing and the maximum operation drop amount when executing the copy function with sorting and stapling functions. For example, as shown in FIG. 7, it is assumed that the operation timing when executing the copy function with sorting and stapling function is changed to an operation timing different from the operation timing shown in FIG. That is, the scanner operation by the scanner unit 21 is completed first, and from the time of completion (time td3), the print unit 22 performs the print operation and the sort unit 241 performs the sort operation as in FIG. Further, it is assumed that the operation timing is changed so that the staple unit 242 performs the stapling operation.

  At this operation timing, from the time td4 when the stapling unit 242 starts the operation to the time td5 when the printing unit 22 ends the operation, it corresponds to each operation unit that operates simultaneously when executing the sort and copy function with stapling function. The total correction drop amount is maximized. Accordingly, when the sort and copy function with stapling function is executed using this operation timing, the maximum operation drop amount Dmax is the correction drop amount Dc1 (for example, 11.2 V (FIG. 4)) corresponding to the print unit 22, and the sort unit. 18.2V which is the sum of the correction drop amount Dc3 (example: 4.2V (FIG. 4)) corresponding to 241 and the correction drop amount Dc4 (example: 2.8V (FIG. 4)) corresponding to the staple unit 242. Become. As a result, the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De becomes 28.2V, and does not exceed 30V which is the threshold drop amount Dth.

  That is, in this specific example, in step S25, the execution control unit 16 determines the operation timing (FIG. 6) for operating each operation unit when executing the copy function with sorting and stapling function as the maximum operation drop amount Dmax and the extrinsic drop amount. It is determined that the timing can be changed to another operation timing (FIG. 7) that prevents the sum of De from exceeding the threshold drop amount Dth (S25; YES). Then, the execution control unit 16 changes the operation timing used when executing the copy function with sorting and stapling function to the other operation timing (FIG. 7) (S26), and uses the other operation timing (FIG. 7). The function execution unit 12 is caused to execute the copy function with sorting and stapling function (S27).

  On the other hand, as shown in FIG. 5, it is assumed that the execution control unit 16 determines in step S25 that it cannot be changed to another operation timing (S25; NO). In this case, the warning notification unit 17 notifies the user of a warning that the execution target function cannot be executed due to insufficient power, for example, by displaying a message on the display unit 231 that the execution target function cannot be executed due to insufficient power ( S28). Then, the execution control unit 16 ends the process without causing the function execution unit 12 to execute the execution target function.

  For example, as described above, it is assumed that the extrinsic drop amount De is 10V, the execution target function is the copy function with sorting and stapling function, and the maximum operation drop amount Dmax calculated in step S23 is 21V. However, the threshold drop amount Dth is set to 25 V, which is smaller than the above 30 V.

  In this case, as described above, even if the operation timing used when executing the copy function with sorting and stapling function is changed from the operation timing shown in FIG. 6 to another operation timing shown in FIG. Since the sum of the amount Dmax and the extrinsic drop amount De is 28.2V, the threshold drop amount Dth exceeds 25V.

  Therefore, it is conceivable that the operation timing shown in FIG. 7 is further changed to an operation timing for operating the sorting unit 241 after the printing operation of the printing unit 22 is completed. However, at the operation timing after this change, the paper output from the print unit 22 is discharged to the discharge tray without being sorted, and the sort unit 241 cannot perform the sort operation. In other words, the execution target function cannot be executed accurately, and it is impossible to change the operation timing.

  Further, it is conceivable to change the operation timing shown in FIG. 7 to an operation timing that causes the stapling unit 242 to perform the stapling operation after the sorting operation by the sorting unit 241 is completed. However, even at the operation timing after the change, the maximum operation drop amount Dmax is the correction drop amount Dc1 (for example, 11.2 V (FIG. 4)) corresponding to the print unit 22 and the correction drop corresponding to the sort unit 241. The sum of the maximum operation drop amount Dmax and the extrinsic drop amount De is 25.4V, although the sum is 15.4V that is the sum of the amount Dc3 (example: 4.2V (FIG. 4)), and the threshold drop amount It exceeds 20V which is Dth.

  Therefore, in this specific example, in step S25, the execution control unit 16 determines that it cannot be changed to another operation timing (S25; NO). And the warning alerting | reporting part 17 alert | reports the warning that an execution object function cannot be performed by power shortage (S28).

  As described above, according to the configuration of the above embodiment, the voltage difference between the predetermined standard voltage Vd of the power supply voltage and the start voltage Vs measured at the start of the warm-up operation performed before executing the function is calculated. Calculated as the extrinsic drop amount De. Further, a voltage difference between the starting voltage Vs and the measured voltage Vm during the warm-up operation is calculated as the actual drop amount Dr.

  That is, even if the power supply voltage supplied to the multifunction device 1 is dropped due to being used by other electronic devices than the multifunction device 1, the voltage drop amount is appropriately set according to the installation environment of the multifunction device 1. It can be calculated as the extrinsic drop amount De. Further, the voltage drop amount due to the warm-up operation performed before the execution of the function can be appropriately calculated as the actual drop amount Dr according to the installation environment of the multifunction machine 1.

  Further, according to the configuration of the above embodiment, the product of the ratio (correction ratio C) of the actual drop amount Dr to the reference initial drop amount D0 and the reference operation drop amounts D1 to D4 corresponding to the predetermined operation units is obtained. The correction drop amounts Dc1 to Dc4 corresponding to the respective operation units are calculated.

  In other words, the ratio (correction ratio) of the actual drop amount Dr, which is the voltage drop amount due to the actual warm-up operation in the multifunction device 1 after installation, with respect to the reference initial drop amount D0 determined without taking the installation environment of the multifunction device 1 into consideration. C), the reference environment drop amounts D1 to D4, which are voltage drop amounts due to the operation of each operation unit determined without taking the installation environment of the multifunction device 1 into account, were taken into account in the installation environment of the multifunction device 1. The correction drop amounts Dc1 to Dc4 can be corrected.

  As described above, according to the configuration of the above embodiment, the reference operation drop amounts D1 to D4 stored in the storage unit 13 are corrected to the correction drop amounts Dc1 to Dc4 in consideration of the installation environment of the multifunction device 1. Therefore, the same reference operation drop amounts D1 to D4 as those stored in the storage unit 13 of the multifunction device 1 can be stored in the storage unit of another multifunction device having the same specifications as the multifunction device 1.

  As a result, the operation of each operation unit was performed without the need to measure and store the voltage drop amount when each operation unit was individually operated in advance for each device, which was necessary in the prior art. Can be grasped as correction drop amounts Dc1 to Dc4 appropriately and efficiently in accordance with the installation environment of the multifunction machine 1.

  Then, when the sum of the correction drop amounts corresponding to the respective operation units operating simultaneously during the execution of the function is maximized, the sum is calculated as the maximum operation drop amount Dmax. Then, the function is executed when the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De does not exceed the threshold drop amount Dth.

  As a result, the function according to the installation environment of the multifunction device 1 by adding the voltage drop amount due to the operation of the other electronic device by the sum of the extrinsic drop amount De and the maximum operation drop amount Dmax calculated before the execution of the function. It is possible to appropriately and efficiently grasp the maximum voltage drop amount at the time of execution, and appropriately determine whether or not the function can be executed based on whether or not the grasped voltage drop amount exceeds the threshold drop amount.

  Further, according to the configuration of the above embodiment, even when the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De exceeds the threshold drop amount Dth, the operation timing of each operation unit when executing the function is set. When the maximum operation drop amount Dmax can be changed to another operation timing that does not exceed the threshold drop amount Dth, the function can be executed using the other operation timing. In this way, by reducing the amount of voltage drop when executing the function, the opportunity to execute the function can be increased, so the convenience of the multifunction device 1 can be improved.

  Further, according to the configuration of the above embodiment, the operation timing of each operation unit when the function is executed when the sum of the maximum operation drop amount Dmax and the extrinsic drop amount De exceeds the threshold drop amount Dth, When it is impossible to change to another operation timing such that the maximum operation drop amount Dmax does not exceed the threshold drop amount Dth, the warning notification unit 17 notifies the warning that the function cannot be executed due to power shortage. For this reason, the user can grasp in advance that the function cannot be executed due to power shortage. This makes it easier for the user to take measures to eliminate the power shortage.

  In addition, the said embodiment is only the illustration of embodiment which concerns on this invention, and is not the meaning which limits this invention to the said embodiment. For example, the following modified embodiment may be used.

  (1) For example, as shown in the broken line part of FIG. 1, the control unit 10 may further operate as the timing changing unit 18. When the instruction receiving unit 11 receives an execution priority instruction that prioritizes execution of a function while avoiding power shortage, the timing changing unit 18 sets the operation timing used when executing the function to the maximum operation drop amount Dmax. Change to the operation timing that minimizes.

  Specifically, the instruction receiving unit 11 is a soft key that prompts the user to input an execution priority instruction that prioritizes execution of a function while avoiding a power shortage before receiving an instruction to execute the function in step S21 (FIG. 5). And a soft key that prompts the user to input a performance priority instruction that prioritizes reducing the time required to execute the function.

  When the user performs a touch operation on a soft key that prompts input of a performance priority instruction, the instruction receiving unit 11 receives a performance priority instruction. In this case, similarly to the above-described embodiment, the processing after step S21 (FIG. 5) is performed. On the other hand, when a soft key that prompts the execution priority instruction is touched by the user, the instruction receiving unit 11 receives the execution priority instruction.

  FIG. 8 is a diagram illustrating an example of the relationship between the operation timing changed by the timing changing unit 18 and the maximum operation drop amount Dmax. When the execution priority instruction is received by the instruction receiving unit 11, the timing changing unit 18 changes the operation timing used when executing each function shown in FIG. 6 to, for example, each operation timing shown in FIG.

  Since only the printing unit 22 operates when executing the print function, the maximum operation drop amount Dmax is not changed even if the operation timing is changed. Therefore, the timing changing unit 18 does not change the operation timing used when executing the print function shown in FIG.

  On the other hand, as shown in FIG. 8, the timing changing unit 18 first completes the scanner operation by the scanner unit 21 at the operation timing used when executing the copy function, and performs the printing operation to the printing unit 22 from the completion time tb2. To change. That is, the timing changing unit 18 avoids operating the scanner unit 21 and the printing unit 22 simultaneously when executing the copy function, and the maximum operation drop amount Dmax is reduced to the correction drop amount Dc1 (eg, 11.2 V). Change to minimized operation timing.

  Similarly, as shown in FIG. 8, the timing changing unit 18 first completes the scanner operation by the scanner unit 21 at the operation timing used when executing the copy function with sort function, and from the completion time tc2, the printing unit 22. Change to make the print operation. Further, it is conceivable to change the operation timing so that the print unit 22 and the sort unit 241 are not operated simultaneously. However, as described above, the sort operation cannot be normally operated. Not performed.

  That is, the timing changing unit 18 avoids operating the scanner unit 21 and the printing unit 22 simultaneously when executing the copy function with sort function, and the maximum operation drop amount Dmax is corrected to the correction drop amount Dc1 (example: 11.2 V). And the operation timing minimized to 15.4V, which is the sum of the correction drop amount Dc3 (example: 4.2V).

  Similarly, as shown in FIG. 8, the timing changing unit 18 first completes the scanner operation by the scanner unit 21 at the operation timing used when executing the copy function with sorting and stapling function, and prints from the completion time td6. The unit 22 is changed to perform the printing operation. Further, the timing changing unit 18 changes the operation timing after the change so that the sorting operation by the sorting unit 241 is completed first, and the stapling operation by the stapling unit 242 is performed from the completion time td7.

  In other words, the timing changing unit 18 avoids operating the scanner unit 21 and the print unit 22 simultaneously when executing the copy function with sort function, and further, the staple unit 242 operates simultaneously with the print unit 22 and the sort unit 241. Change the operation timing to avoid Thereby, the timing changing unit 18 minimizes the maximum operation drop amount Dmax to 15.4V which is the sum of the correction drop amount Dc1 (example: 11.2V) and the correction drop amount Dc3 (example: 4.2V). Change to the operation timing.

  After the change of each operation timing by the timing changing unit 18, the processing after step S21 (FIG. 5) is performed. In this case, in step S23 (FIG. 5), the execution control unit 16 executes each function using the operation timing after the change by the timing changing unit 18 instead of the operation timing shown in FIG. The maximum operation drop amount Dmax is calculated.

  According to the configuration of this modified embodiment, when an execution priority instruction is received by the instruction receiving unit 11, the function is executed at an operation timing that minimizes the voltage drop amount when the function is executed. For this reason, when the user wants to reduce the amount of voltage drop during function execution as much as possible, such as when the power supply voltage supplied to the multifunction device 1 is also used for other electronic devices, the execution priority is given to the instruction receiving unit 11. By performing the operation of accepting the instruction, the function can be executed with the voltage drop amount as small as possible.

  (2) In addition, the drop amount calculation unit 14 replaces the effective value of the measurement voltage Vm during the warm-up operation with the measurement voltage Vm during the warm-up operation when calculating the actual drop amount Dr in step S8 (FIG. 3). An average value of may be used. In accordance with this, the reference initial drop amount D0 may also be determined as a voltage difference between a predetermined average value of the power supply voltage and an average value of the measurement voltage Vm during the warm-up operation.

  (3) Moreover, you may comprise so that the operation part 23 may include the speaker which outputs an audio | voice. In step S28, the warning notification unit 17 outputs a predetermined warning sound indicating that the execution target function cannot be executed due to power shortage to the speaker, thereby warning that the execution target function cannot be executed due to power shortage. The user may be notified.

  (4) Moreover, it may simplify so that the control part 10 may not operate | move as the warning alerting | reporting part 17, and step S28 (FIG. 5) may be abbreviate | omitted.

  (5) Steps S25 and S26 (FIG. 5) may be omitted. Accordingly, when the sum of the maximum operation drop amount Dmax and the external cause drop amount De exceeds the threshold drop amount Dth in step S24 (FIG. 5) (S24; YES), the execution control unit 16 performs step S28. Alternatively, the process may be terminated without executing step S28.

1 Multifunction machine (electronic equipment)
DESCRIPTION OF SYMBOLS 11 Instruction reception part 12 Function execution part 13 Memory | storage part 14 Drop amount calculation part 15 Drop amount correction | amendment part 16 Execution control part 17 Warning notification part 18 Timing change part 21 Scanner part (operation | movement part)
22 Print section (operation section)
91 Voltage sensor (measurement unit)
241 Sort part (operation part)
242 Staple section (operation section)
C Correction ratio (ratio)
D0 Reference initial drop amount D1 to D4 Reference operation drop amount Dc1 to Dc4 Correction drop amount De External drop amount Dmax Maximum operation drop amount Dr Actual drop amount Dth Threshold drop amount Vd Standard voltage Vs Start voltage

Claims (4)

A plurality of operating units that operate using a power supply voltage supplied from an external power source;
A measuring unit for measuring the power supply voltage;
A function execution unit capable of executing a function of operating one or more of the operation units at a predetermined operation timing after the predetermined operation unit is warmed up;
A storage unit that stores a reference initial drop amount that is predetermined as a voltage drop amount by the warm-up operation and a reference operation drop amount that is predetermined as a voltage drop amount by the operation of each operation unit;
A voltage difference between a predetermined standard voltage of the power supply voltage and a start voltage measured by the measurement unit at the start of the warm-up operation is calculated as an external factor drop amount, and the measurement is performed during the start-up voltage and the warm-up operation. A drop amount calculation unit that calculates a voltage difference from the voltage measured by the unit as an actual drop amount;
A drop amount correction unit that calculates a product of a ratio of the actual drop amount to the reference initial drop amount and the reference operation drop amount corresponding to each operation unit as a correction drop amount corresponding to each operation unit;
When the sum of the correction drop amounts corresponding to the operation units operating simultaneously at the time of execution of the function is maximized, the sum is calculated as a maximum operation drop amount, and the maximum operation drop amount and the external cause drop amount are calculated. An execution control unit that causes the function execution unit to execute the function when the sum of the values does not exceed a predetermined threshold drop amount;
Electronic equipment comprising.   The execution control unit determines the operation timing when the sum of the maximum operation drop amount and the external cause drop amount exceeds the threshold drop amount, and the sum of the maximum operation drop amount and the external cause drop amount is the threshold value. 2. The electronic device according to claim 1, wherein when it is possible to change to another operation timing so as not to exceed the drop amount, the function execution unit executes the function using the other operation timing. A warning notification unit that notifies a warning that the function cannot be executed due to power shortage;
The execution control unit determines the operation timing when the sum of the maximum operation drop amount and the external cause drop amount exceeds the threshold drop amount, and the sum of the maximum operation drop amount and the external cause drop amount is the threshold value. 3. The device according to claim 1, wherein when it is impossible to change to another operation timing that does not exceed the drop amount, the function execution unit does not execute the function, and the warning notification unit notifies the warning. 4. Electronics. An instruction receiving unit that receives an execution priority instruction that prioritizes execution of the function while avoiding power shortage;
A timing changing unit that changes the operation timing to an operation timing that minimizes the maximum operation drop amount when the execution priority instruction is received by the instruction receiving unit;
The electronic device according to any one of claims 1 to 3, further comprising:

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