KR20010002429A - Bidet program data back-up circuit and data access method therefore - Google Patents

Abstract

PURPOSE: A bidet program data backup device is provided to prevent loss of bidet program data on power-off without adopting an additional backup battery circuit or battery and to reduce the size of a controller as well as to remove complexity in program re-input caused by the loss of bidet program data. CONSTITUTION: A microcomputer(10) controls action of a bidet device and data backup according to a predetermined source program. A key operating/display unit(2) outputs setting key data to the microcomputer by generating the data related with occurrence of bidet program data responding to operation of a user. The key operating/display unit displays the action setting state of the bidet device. A backup non-volatile memory unit(20) outputs the predetermined bidet program data serially by responding to a serial clock of the microcomputer. According to the serial clock, the backup non-volatile memory unit saves the bidet program data of the microcomputer permanently until the next bidet program data are updated.

Description

Bidet program data back-up device and data access method accordingly {Bidet program data back-up circuit and data access method therefore}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of bidet devices installed in an indoor space, such as a bathroom, to perform a washing operation locally, and more particularly, to an improved bidet program data backup device and an access method of bidet program data.

Typically, a bidet device performs a local cleaning operation in various modes depending on the user's input settings. Initially, an analog bidet device was set using a general passive variable resistor, but recent digital bidet devices have a built-in bidet controller that performs a control operation electronically. In such a digital bidet device, the various modes and mode-specific steps of the cleaning operation are usually selected and changed according to the bidet user's program data input settings. Such bidet program data indicates variable values related to the strength of the water pressure ejected from the bidet, the temperature of hot water, the warm air temperature, the temperature of the bidet sheet, and the like.

Such bidet program data is generally stored in dynamic RAM (DRAM) or static RAM (SRAM). Since the dynamic RAM or the static RAM has a volatile memory operation characteristic, the bidet program data is lost and not stored at power off or power failure. Therefore, since the stored bidet program data is lost when the power is turned off or in a power failure, the bidet program data must be created each time by performing a new setting operation.

In order to prevent the loss of bidet program data without cumbersome setting operation, conventionally, a backup battery circuit and a battery are installed in the bidet controller to prevent the loss of bidet program data at power off or power failure. That is, when the power is off or the power failure is quickly sensed by the backup battery circuit, the power of the backup battery is supplied to the controller only in the case of power off or power failure so that data stored in the volatile memory is not lost. However, this results in the problem that the backup battery circuit and the battery are added, and the life of the battery must be periodically checked and replaced.

As described above, in order to prevent the loss of the bidet program data, there is a problem of an increase in the cost of additionally installing the backup battery circuit and the battery to the bidet controller of the bidet device and the cumbersome problem of periodically performing maintenance and repair of the battery. come.

Accordingly, an object of the present invention is to provide a bidet program data backup apparatus capable of solving the above-mentioned conventional problems.

Another object of the present invention is to provide a bidet program data backup device and a method of accessing bidet program data, which can solve the cost increase and cumbersome problems caused by the installation of the backup battery circuit and the battery.

Another object of the present invention is to provide a bidet controller having a backup device capable of permanently preserving set program data without having a complicated configuration.

In order to achieve the above objects, a bidet program data backup apparatus according to the device technology of the present invention comprises: a microcomputer for controlling all operations and data backup of a bidet apparatus according to a preset source program; A key operation and display unit for generating and outputting setting key data related to bidet program data generation in response to a user's setting operation and displaying the operation setting state of the bidet device; In read mode, bidet program data, which is pre-stored in response to a serial clock applied from the microcomputer, is output in series to the microcomputer, and in a write mode, an operation of the bidet device provided by the microcomputer in response to the serial clock is performed. And a nonvolatile memory portion for backup which permanently stores bidet program data related to the setting until the next update.

In addition, a method for accessing bidet program data in a method includes: When a power source is initially turned on, non-volatile bidet program data that is previously stored for backup purposes is serially output in synchronization with a serial clock to read data. Performing a step; When the setting key data is generated, the data writing operation is performed by permanently backing up and storing the bidet program data related to the bidet operation setting corresponding thereto until the next update.

Other objects and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

1 is a schematic block diagram of a bidet controller including a bidet program data backup apparatus according to an embodiment of the present invention.

FIG. 2 is a pin out diagram illustrating a specific example of the nonvolatile memory unit of FIG. 1; FIG.

FIG. 3 is an access timing diagram illustrating a method of storing and reading bidet program data using FIG. 2.

4 is a control flowchart illustrating an operation of accessing bidet program data according to an exemplary embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention for a bidet program data backup device and a method for accessing the bidet program data will be described in detail.

First, Figure 1 shows a schematic block diagram of a bidet controller including a bidet program data backup apparatus according to an embodiment of the present invention. Referring to FIG. 1, the microcomputer 10, the sensor input unit 6, the key operation unit and the display unit 2, the power detection unit 4, the driving unit 30, and the nonvolatile memory unit 20 are the bidet controller. Configure The microcomputer 10 controls overall operations of the bidet device according to a preset source program. Here, the microcomputer 10 includes a control unit 12, a ROM 14 in which the source program is embedded, and a RAM 16 as a working memory. The microcomputer 10 may perform various operations of the bidet device according to a preset source program. The time data backup operation is also controlled. The sensor input unit 6 is connected to various sensors such as a hot water temperature sensor, a warm air temperature sensor, a water pressure sensor, a seating sensor, a seat temperature sensor, etc. to generate current state data for a local washing operation of the bidet device. The key control unit and the display unit 2 generate the set key data related to the bidet program data generation in response to the user's setting operation, and output them to the control unit 12 in the microcomputer 10. The display operation displayed by the diode is performed. The power detector 4 monitors an application level of commercial power. The driving unit 30 is connected to the control unit 12 of the microcomputer 10, the apparatus related to the local washing operation, for example, a solenoid valve for adjusting the strength of the water pressure, a heater to increase the temperature of the hot water, a heat generator to increase the warm air temperature And a heater for raising the temperature of the bidet sheet are driven according to the command of the microcomputer 10. The nonvolatile memory unit 20 is electrically erasable and programmable ROM (EEPROM), and in read mode, the nonvolatile memory unit 20 is stored in advance in response to a serial clock applied from the microcomputer 10. The bidet program data is serially output to the microcomputer 10, and in the write mode, the bidet program data related to the operation setting of the bidet device provided by the microcomputer 10 is output in response to the serial clock. Save permanently until the next update. That is, the nonvolatile memory unit 20 functions as a backup permanent storage memory for solving the cost increase and cumbersome problems associated with the installation of the conventional backup battery circuit and the battery.

2 illustrates a pin out showing a specific example of the nonvolatile memory unit 20. When the 1024-bit commercial memory "93C46" is adopted as the EEPROM, the data input pin DI of pin 3, the chip selector pin CS of pin 1, and the serial clock pin SK of pin 2 are connected to the line L1 of FIG. The data output pin DO of pin 4 is connected to the line L2. The backup memory shown in FIG. 2 is stored as a bidet program data in a storage area to which variable values such as water pressure, hot water temperature, hot air temperature, and bidet sheet temperature are allocated.

FIG. 3 is an operation timing diagram illustrating a method of storing and reading bidet program data using FIG. 2. The waveform SK represents a serial clock and is a signal waveform applied through pin 2 of FIG. 2. In the case of accessing bidet program data to the memory 20 by program (write), read, erase, or enable, the instruction is serially applied through pin 3 of FIG. An address designating an access address is applied through pin 3 of FIG. 2, and a binary 8-bit code and an inverting code thereof are applied through pin 3 during a write operation during sections T3 and T4. Waveform DIW1 shows a data string that can be applied to pin 3 in synchronization with the serial clock during a write operation. Here, during the period T1 of the waveform DIW1, the data 11001 is applied as a command to command the write operation. In the case of a read operation, 10110 may be applied as a command. In the case of erasing, 10001 can be applied as data. Since 0001 is applied during the period T2 of the waveform DIW1, the data to be stored is stored in the memory cell existing at the address. Data 00110100 was applied to the section T3, which is a case where data related to warm air is designated as 0011 and 0100 is applied using the temperature step of the warm air as four steps. The generation of such data is made by the control unit 12, but in the end, this is caused by the user operating the key operation unit and the display unit 2. It can be seen that the inversion code 11001011 is applied during the period T4. As described above, the permanently stored light data is read by the read command by the controller 12 when the power is turned off or in a power failure, as shown by the waveform DIR, and the warm air temperature is driven by the driver 30. It is set according to the program of. Waveform DIW2 shows the data applied to pin 3 when the previous write data is erased and newly updated when the user changes the step of the warm air temperature. As a result, the use of the backup battery circuit or the battery is eliminated by storing the bidet program data permanently in the nonvolatile memory and performing a bidet setting operation by backing up without losing the previous data at power off or power failure.

4 is a control flowchart illustrating an operation of accessing bidet program data according to an exemplary embodiment of the present invention, in which a control operation performed by the controller 12 from a power-on state to a power-off state of the bidet apparatus is performed. The data is shown mainly in the backup operation. When the power is initially turned on, the controller 12 performs step 400 to initialize each input / output port and a register setting flag. In operation 401, a read operation of reading bidet program data is performed. In this case, data shown in the waveform DIR of FIG. 3 may be applied to pin 3 of the memory unit 20. That is, at the beginning of the operation, the stored value of the variable, that is, program data is provided, and the operation of the bidet is set accordingly. In step 402, such a setup operation is performed by a memory read operation of the controller 20 and various control operations according to a program. In step 403, the presence or absence of setting key data is checked. This turns out to be the reception of data when the user operates the setting key related to the bidet program data generation in the key operation section and the display section 2. For example, when the user changes the temperature step of the warm air from step 4 to step 3, the control unit 12 performs step 404 to generate data shown in waveform DIW2 of FIG. 3 and to the memory 20. Is authorized. This is the data update operation. The update operation can be performed with almost no limit on the number of times according to the user's setting operation. In step 403, if the setup key data is not received, steps 405 and 406 are performed. Step 405 is a step of performing a general operation, which includes all the various control operations other than the data update operation. If the power-off is checked in step 405, the control operation of the controller 12 is stopped and the bidet program data updated so far is permanently stored in the memory 20. As a result, the same result as that of the conventional backup operation is performed.

As described above, the embodiment of the present invention has been described by way of example with reference to the drawings, but various changes and modifications can be made within the scope allowed by the matter. For example, although the serial input / output memory is used, parallel input / output memory may be used.

According to the bidet program data backup device and the data access method as described above, there is an effect that the loss of bidet program data at the time of power failure or power off can be prevented without employing a separate backup battery. In addition, there is an advantage that the size of the circuit device is reduced and the problem of frequent input work due to loss of program data is solved.

Claims (7)

In the bidet program data backup device applied to the bidet controller: A microcomputer for controlling all operations and data backup of the bidet device according to a preset source program; A key operation and display unit for generating and outputting setting key data related to bidet program data generation in response to a user's setting operation and displaying the operation setting state of the bidet device; In read mode, bidet program data, which is pre-stored in response to a serial clock applied from the microcomputer, is output in series to the microcomputer, and in a write mode, an operation of the bidet device provided by the microcomputer in response to the serial clock is performed. A bidet program data backup apparatus comprising a nonvolatile memory unit for backup which permanently stores bidet program data related to a setting until the next update. The system of claim 1, wherein the microprocessor comprises: a microprocessor; And a non-volatile memory unit for controlling serial data communication, a ROM incorporating the source program, and a RAM as a working memory. The apparatus of claim 1 or 2, wherein the nonvolatile memory unit is an electrically erasable and programmable ROM. For a bidet controller installed in a local washer: A microcomputer for controlling all operations of the bidet device according to a preset program; A key operation and display unit for providing bid key program data generation-related setting key data to the microcomputer in response to a user setting operation and for visually displaying the operation setting state of the local washing apparatus; A sensor input unit connected to various sensors to generate current state data for a local washing operation of the local washing apparatus; A driving unit connected to the microcomputer to drive a device related to a local washing operation of the local washing apparatus according to a command of the microcomputer; In read mode, bidet program data, which is stored in advance for backup, is serially output to the microcomputer, and in write mode, bidet program data related to the operation setting of the device provided by the microcomputer is updated in response to a serial clock until the next update. A bidet controller characterized by having an electrically erasable and programmable ROM that permanently backs up and stores. The system of claim 4, wherein the microprocessor comprises: a microprocessor; And a control unit performing serial data communication with the ROM, a ROM in which the program is embedded, and a RAM as a working memory. In the method for accessing bidet program data: Performing a data read by serially outputting non-volatile bidet program data serially synchronized with a serial clock when the power source is initially turned on; And when the set key data is generated, permanently backing up and storing the bidet program data related to the bidet operation setting until the next update to perform a data write operation. The method of claim 6, wherein the memory storing the bidet program data is an electrically erasable and programmable read-only memory.