JP2009041918A - Electronic instrument and toilet apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic instrument and a toilet apparatus capable of properly resuming operation by properly distinguishing between energization and noise even under an environment in which a power supply with variable frequency is used. <P>SOLUTION: The electronic instrument includes: a power supply circuit that is supplied with electric power from AC power supply with variable frequency and outputs a zero crossing detection signal by detecting the zero crossing of the AC power supply; a control unit for outputting a control signal; and a controlled unit operating based on the control signal. The control unit resumes operation of the controlled unit when the AC power supply fails and the control unit receives the zero crossing detection signal more than a predetermined number of times within a predetermined time period. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device and a toilet device, and more specifically, is an electronic device that operates with alternating current power, for example, a sanitary cleaning function that cleans a user's “buttock” seated on a Western-style sitting toilet with water, etc. The present invention relates to an electronic device and a toilet device having the above.

In an electronic device that operates with AC power, a technique for determining the presence or absence of a power failure based on zero-cross detection of an AC power source is disclosed (for example, Patent Document 1). Using this technique, it is possible to determine that a power failure has occurred based on the fact that zero crossing does not occur at intervals determined by frequency. Further, when returning from a power failure, it is only necessary to detect that zero crossing occurs at intervals determined by the frequency.
JP-A-3-295473

When the frequency of the power source is constant, it can be distinguished whether the zero cross detection signal is due to energization or noise. Therefore, if the zero cross can be detected at regular intervals, it can be determined that the power supply is energized.
However, in the case of using an AC power source whose frequency varies, it is difficult to determine whether the zero-cross detection signal is due to energization or noise because a fixed period cannot be determined.

  The present invention provides an electronic device and a toilet apparatus that can reliably distinguish between energization and noise even in an environment where a power supply with a varying frequency is used, and can accurately resume operation.

  According to one aspect of the present invention, a power supply circuit that receives power supply from an AC power supply that changes in frequency, detects a zero cross of the AC power supply and outputs a zero cross detection signal, a control unit that outputs a control signal, A controlled unit that operates based on the control signal, and the control unit receives the zero-cross detection signal a predetermined number of times within a predetermined time when the AC power supply fails. An electronic apparatus is provided that restarts the operation of the unit.

  According to another aspect of the present invention, a power supply circuit that receives power supply from an AC power source that changes in frequency, detects a zero cross of the AC power source, and outputs a zero cross detection signal, and outputs a control signal. A controller, an initialization operation at the start of power supply, a motor that operates by pulse driving based on the control signal, and a water discharge nozzle that is advanced and retracted by the motor, and the controller When the AC power supply fails during driving of the motor, a toilet apparatus is provided that resumes the operation of the motor when the zero cross detection signal is received a predetermined number of times or more within a predetermined time.

  According to still another aspect of the present invention, a power supply circuit that receives supply of power from an alternating-current power supply that changes in frequency, detects a zero-crossing of the alternating-current power supply, and outputs a zero-cross detection signal, and outputs a control signal A control unit that performs an initialization operation at the start of the power supply, and operates by pulse driving based on the control signal, and a control valve driven by the motor, the control unit includes: When the AC power supply fails during driving of the motor, a toilet device is provided that resumes operation of the motor when the zero cross detection signal is received a predetermined number of times within a predetermined time. .

  ADVANTAGE OF THE INVENTION According to this invention, even if it is the environment using the power supply from which a frequency fluctuates, the electronic device and toilet apparatus which can distinguish electricity supply and noise reliably, and can restart driving | operation accurately can be provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the similar element in each figure, and detailed description is abbreviate | omitted suitably.
FIG. 1 is a block diagram illustrating the main configuration of an electronic device according to an embodiment of the invention. The electronic apparatus according to the present embodiment includes a power supply circuit 1, a control unit 2, a controlled unit 3, and an operation unit 4. This electronic device is operated by an AC power supply 900, and has a mechanism for mechanically operating, generating heat, generating sound, generating light, and displaying an image. Provide as appropriate. As an example of this electronic device, a toilet device having a sanitary washing function can be cited.

  Here, the frequency of the AC power supply 900 is not constant, and changes within a range of 250 to 600 hertz, for example.

The power supply circuit 1 generates AC or DC voltages P1 and P2 for operating the control unit 2 and the controlled unit 3 using AC power supplied from the AC power supply 900 as a power source. For example, when the control unit 2 has a CPU (Central Processing Unit), a voltage P1 such as DC 5 volts for operating the CPU is generated and supplied to the control unit 2. When the controlled unit 3 has a stepping motor that is driven by DC 24 volts, the power supply circuit 1 generates a voltage P2 of DC 24 volts using AC power supplied from the AC power supply 900 as a power source. To supply.
The AC power supply 900 may be built in the power supply circuit 1. For example, the power supply circuit 1 can also incorporate a generator that generates AC power from various fuels as the AC power supply 900.

  Further, the power supply circuit 1 detects the zero cross point of the AC power supplied from the AC power supply 900 and outputs the detection signal S1 to the control unit 2. That is, the power supply circuit 1 detects at least one of the transition from minus to plus and the transition from plus to minus of the voltage of the AC power supplied from the AC power supply 900, and generates a zero-cross detection signal S1 corresponding thereto. Generate and output.

The control unit 2 operates based on the voltage P <b> 1 supplied from the power supply circuit 1, and controls the operation of some of the controlled units 3 based on the zero cross detection signal S <b> 1 output from the power supply circuit 1.
The controlled unit 3 performs a predetermined operation based on the control signal C1 output from the control unit 2. As described above, the operation may be a mechanical operation, heat generation, sound generation, light generation, image display, or the like.

  The operation unit 4 includes, for example, a switch, and the user of the electronic device can operate the switch to cause the controlled unit 3 to execute or stop a predetermined operation. That is, when the user operates the operation unit 4, a control signal C2 corresponding to the content is output to the control unit 2, and the control unit 2 controls the operation of the controlled unit 3 based on the control signal C2.

FIG. 2 is a circuit diagram illustrating a specific example of the power supply circuit 1.
The power supply circuit 1 includes a power supply unit 1A that converts AC power supplied from the AC power supply 900 to generate voltages P1 and P2. The power supply unit 1A generates, for example, a DC voltage Vcc of 5 volts as the voltage P1 supplied to the control unit 2.
The power supply circuit 1 of this specific example includes a photocoupler 1B. The photocoupler 1B includes a pair of light emitting diodes 1C connected to the AC power supply 900, and a phototransistor 1D that receives light emitted from the light emitting diodes 1C. When the AC voltage supplied from the AC power supply 900 transitions from minus to plus and from plus to minus, a moment occurs when both the pair of light emitting diodes 1C are turned off. In response to this, the output from the phototransistor 1C transitions to a low level. That is, when the AC voltage supplied from the AC power supply 900 transitions from minus to plus and from plus to minus, the output S1 from the photocoupler 1B generates a pulse from the high level to the low level. In this way, the zero cross detection signal S1 of the AC power supply 900 can be obtained. Note that the zero-cross detection signal S1 generated in this way may be appropriately inverted by an inverter or the like. Further, the method of detecting the zero cross point in the present invention is not limited to the configuration of FIG. 2, and the zero cross point of the AC power supply 900 can be similarly detected by various other circuit configurations.

FIG. 3 is a state transition diagram of operations executed in the electronic apparatus of this embodiment.
In a state where predetermined AC power is supplied from the AC power supply 900, the control unit 2 performs a normal operation (state S10) in principle. In the normal operation, the voltage P2 is supplied to the controlled unit 3, and the control unit 2 operates the controlled unit 3 in a normal manner. The normal operation of the controlled unit 3 is, for example, a cleaning operation by discharging water from a nozzle in the case of a toilet device having a sanitary cleaning function, and operations such as music playback / stop / fast-forward in the case of a music player. It is.
Still further, the normal operation can include an operation of changing settings related to main operations of the electronic device. For example, in the case of a toilet device having a sanitary washing function, the temperature adjustment of the water discharge, the position adjustment of the water discharge nozzle, the operation of changing the setting of the operation reference point of the water discharge nozzle and the toilet seat toilet lid, and the like can be mentioned. In the case of a music player, volume adjustment, equalizer adjustment, and the like can be given.

  On the other hand, in the normal operation (state S10), the control unit 2 executes a power failure detection process. The power failure detection process is a process for determining whether or not the AC power supplied from the AC power source 900 has a power failure. For example, when the number of zero-crossing detection signals S1 input within a predetermined time is below a predetermined value, it can be determined that a power failure has occurred.

  And control part 2 will perform operation at the time of a power failure (state S20), if a power failure is detected. That is, when the AC power supply 900 becomes a power failure, the control unit 2 interrupts the operation of the controlled unit 3 or makes it stand by.

Here, in many cases, the power supply unit 1A provided in the power supply circuit 1 incorporates a capacitor or the like. Therefore, even if the AC power supply 900 is cut off due to its storage capacity, the voltage P1 does not drop immediately. That is, even if the AC power supply 900 fails, the control unit 2 can continue to operate until the voltage P1 output from the power supply unit 1A drops. In many cases, the power consumption of the control unit 2 of the electronic device is smaller than the power consumption of the controlled unit 3. By stopping the controlled unit 3 during the power failure operation (state S20), the power remaining in the power supply unit 1A can be used for the control unit 2, and the operation time of the control unit 2 can be made longer. . Specifically, as will be described in detail later, after the AC power supply 900 that supplies AC 100 volts has failed, the control unit 2 that operates at DC 5 volts can continue to operate for approximately one second. is there.
And as represented to FIG. 3, in the operation | movement at the time of a power failure (state S20), the control part 2 performs an energization detection process. The energization detection process is a process for detecting resumption of energization of AC power supplied from the AC power supply 900. Specifically, the control unit 2 can determine that the AC power supply 900 has returned to energization when the zero-cross detection signal S1 is received a predetermined number of times within a predetermined time. In this way, erroneous detection due to noise can be effectively prevented.

FIG. 4 is a graph for explaining the operation of the electronic apparatus of this embodiment.
FIG. 5 is a graph for explaining the operation in the comparative example.
When a power supply having a stable frequency, such as a commercial power supply, is used as the AC power supply 900, zero cross detection signals are detected at regular intervals T (ms) as illustrated in FIG. Therefore, even if a signal due to noise enters in the middle, it can be determined as noise because it is an interrupt signal with a different period.

  However, when the frequency of the AC power supply 900 varies as shown in FIG. 4, it may be difficult to determine whether the signal is a zero-cross detection signal based on the AC power VAC or noise. That is, when the frequency of the AC power supply 900 fluctuates, the zero cross detection signal appears irregularly, and it may be difficult to determine whether or not the interruption is caused by noise.

  Therefore, in the present embodiment, when the zero cross detection signal is received a predetermined number of times within a predetermined time, it is determined that the energization of the AC power supply 900 has been restored. In the case of the specific example shown in FIG. 4, if the control unit 2 receives the zero cross detection signal four times while the zero cross detection timer counts for a predetermined time N (ms), it is determined that the energization is restored. Therefore, in the case of the specific example of FIG. 4, during the power failure, while the zero-crossing detection timer counts N (ms), the current is applied regardless of whether the pulse due to noise occurs twice or three times. Is not judged to have returned. Then, if the pulse is generated four times while the zero cross detection timer counts N (ms), it is determined that the energization has been restored, and the normal operation (state S10) is resumed.

  In the normal use environment of the electronic device, the frequency of generation of pulses due to noise is much lower than the frequency of the zero cross detection signal of the AC power supply 900. Accordingly, the setting time of the zero-crossing detection timer and the setting value of the counter that accumulates the number of zero-crossing detection signals received within that time are set to the minimum frequency (the interrupt cycle is the longest) of the AC power supply 900 fluctuation. This should be set in consideration. That is, in consideration of the noise environment, it is possible to appropriately set how many cycles of zero cross detection to determine that the energization has been restored.

Even if there are less than the number of zero cross detection signals set by the zero cross detection signal integration counter within the time set by the zero cross detection timer, they can be regarded as noise and eliminated (continue operation during power failure). . Even if one of these is a zero-cross detection signal, if the power supply is restored to a level that does not satisfy the predetermined condition, it is assumed that a voltage sufficient to drive the controlled unit 3 is not supplied. There is no need to resume operation.
As described above, according to the present embodiment, erroneous detection of a pulse due to noise can be prevented, and the return of energization of the AC power supply 900 can be reliably detected.

FIG. 6 is a flowchart illustrating an operation executed in the electronic device of this embodiment.
During normal operation, AC power is supplied from the AC power supply 900, and the controlled unit 3 performs normal operation under the control of the control unit 2 (step S110). And the control part 2 performs a power failure detection process (step S112). As described above with reference to FIG. 3, in the power failure detection process, for example, when the number of zero cross detection signals S1 input within a predetermined time is below a predetermined value, it is determined that a power failure has occurred. When a power failure is not detected (step S112: no), the series of steps is skipped and the process returns to step S110 again.

  On the other hand, the control part 2 will perform the operation | movement at the time of a power failure (state S20), if a power failure is detected (step S112: yes). That is, the current driving state of the controlled unit 3 is stored (step S114). This can be executed, for example, by storing predetermined information in a memory provided in the control unit 2. And the drive of the to-be-controlled part 3 is stopped (step S116). For example, if the stepping motor of the controlled unit 3 is rotating, a control signal is output so that the rotating operation is stopped halfway. Thereafter, the control unit 2 executes energization detection processing (step S118). That is, as described above, when the control unit 2 receives the zero-cross detection signal S1 a predetermined number of times within a predetermined time, the control unit 2 determines that the AC power supply 900 has returned to power supply (step S118: yes). In this way, erroneous detection due to noise can be effectively prevented.

  If it is determined that energization has been restored (step S118: yes), the control unit 2 reads the state stored in step S114 (step S120), and permits the controlled unit 3 to be driven based on this information ( Step S122). That is, the controlled unit 3 can continue the operation from the state stopped in step S116 and can be resumed.

FIG. 7 is a flowchart showing another specific example of the operation executed in the electronic apparatus of this embodiment.
In this specific example, when detecting a power failure (step S112: yes), the control unit 2 stops an algorithm for driving the controlled unit 3 (step S115). For example, when a power failure is detected during the operation of rotating the stepping motor provided in the controlled unit 3 by a predetermined number of pulses, the control unit 2 stops the algorithm for the operation halfway. To do. In other words, the algorithm for rotating the stepping motor by a predetermined number of pulses is stopped with its internal parameters in the middle.

  Thereafter, when it is determined that energization has been restored (step S118: yes), the control unit 2 resumes the algorithm (step S121). At this time, since the algorithm has been stopped while the internal parameter is in the middle in step S115, the controlled unit 3 resumes the operation from that state. In the specific example described above, the stepping motor of the controlled unit 3 resumes rotation from a state in the middle of reaching the target number of pulses, and continues to rotate for a predetermined number of pulses.

  As described above, according to the present embodiment, when a power failure (instantaneous interruption) shorter than, for example, about 1 second occurs in an electronic device operated by the AC power supply 900 whose frequency varies, the control unit 2 It is possible to reliably determine whether the AC power supply 900 is turned on again without erroneously detecting that the signal due to noise is a signal for returning the power supply. When a power failure occurs while the controlled unit 3 is operating, the operation can be interrupted, and the operation can be resumed when energization is restored. In other words, when a power failure (instantaneous interruption) occurs for a relatively short time during the operation of the electronic device, the electronic device can temporarily stop the operation and resume the operation after the energization is restored.

  According to this embodiment, the operation can be continued without the electronic device being initialized by a power failure for a relatively short time. Further, even when a power failure occurs for a relatively short time, there is no problem that the reference point of operation is shifted. In addition, when the power failure occurs, the power remaining in the power supply circuit 1 can be effectively utilized for the control unit 2 by stopping the operation of the controlled unit 3. That is, residual power stored in a capacitor or the like built in the power supply circuit 1 can be used for the operation of the control unit 2 without being wasted by the controlled unit 3. As a result, when a power failure occurs, the time during which the control unit 2 can continue the operation can be extended, and the operation of the controlled unit 3 can be resumed when the energization is restored. That is, the operation can be resumed without initializing the electronic device even when the power failure is longer.

Hereinafter, a toilet apparatus having a sanitary washing function and the like will be described as an example of the electronic apparatus of the present embodiment.
FIG. 8 is a schematic perspective view of the toilet apparatus according to the embodiment of the present invention.
This toilet apparatus 10 is installed in a Western-style seat toilet 950. The Western-style seat urinal 950 may be a so-called “low tank type”, or may be a “direct pressure type” that is directly connected to a water supply and allows flush water to flow. The toilet device 10 installed thereon includes a main body portion 12 and a toilet seat 14 and a toilet lid 16 that are pivotally supported so as to be openable and closable with respect to the main body portion 12. From the main body 12, the water discharge nozzle 410 extends into the bowl of the toilet 950 according to the user's switch operation, etc., and water is sprayed from the water discharge opening provided near the tip of the toilet 950. It can be washed. In the present specification, “water” includes not only cold water but also heated hot water.

  The main body 12 is provided with a power cord 32 and a ground wire 34, and can be connected to an AC power source 900 via a leakage protection plug 30, for example. The main body 12 is also provided with a water supply pipe 22, which can be connected to a toilet water tap 800 via the connection fitting 20. A branch water channel 810 is also appropriately connected to the water tap 800, and water can be supplied to a low tank or a direct pressure type water supply valve mechanism (not shown).

FIG. 9 is a block diagram illustrating the configuration of the toilet apparatus 10.
That is, the toilet apparatus 10 includes a valve unit 100 that opens and closes a water supply channel, a heat exchange unit 200 that heats the supplied water, a flow rate adjustment valve unit 300 that adjusts the amount of water supplied to the nozzle, and a bowl of the toilet. A nozzle unit 400 for injecting extended water. The nozzle unit 400 is provided with a water discharge nozzle 410, a motor 480 that extends and retracts the water discharge nozzle 410, and a nozzle cleaning chamber 490 that injects water onto the outer periphery of the water discharge nozzle 410 to clean the body. The operation of each of these elements is controlled by the control unit 500 (corresponding to the control unit 2 in FIG. 1).

  The control unit 500 receives a signal from a seating sensor 600 that detects that a user is sitting on the toilet seat 14, information on a switch operation by the remote controller 700, and the like. A power supply circuit 570 (corresponding to the power supply circuit 1 in FIG. 1) is connected to the control unit 500. That is, the power supply circuit 570 converts AC power from the AC power supply 900 supplied via the leakage protection plug 30 into a predetermined DC voltage, and supplies it to the control unit 500. The power supply circuit 570 supplies power to each element other than the control unit 500, but the power supply path is omitted for convenience in FIG.

In the toilet apparatus having such a configuration, when the earth leakage protection plug 30 is inserted into the AC power supply 900, the control unit 500 detects the power-on and starts the “initialization operation”. Alternatively, the initialization operation is also started when the AC power supply 900 returns to energization after the AC power supply 900 has failed for a long time and the operation of the control unit 500 is also stopped.
As the initialization operation, for example, in the flow rate adjustment valve unit 300, the nozzle unit 400, and the like, a process of operating the electric movable portion and determining an operation reference point is executed. At this time, for example, after the electric movable part is moved to the end of its operating range, it is reversely operated for a predetermined stroke or for a predetermined time (or the number of pulses), or is reversely operated to the other end of the operating range. A point can be determined. After determining the operation reference point in this way, the electric movable unit can accurately operate by a predetermined amount using the operation reference point as an origin or an index.
In the present embodiment, when the AC power source 900 is out of power for a relatively short time, for example, within one second, the toilet device interrupts the operation, and when the energization is restored, the toilet device is interrupted without performing the initialization operation. Restart the operation you were doing.

Hereinafter, the configuration of the controlled portion of the toilet apparatus of the present embodiment will be described in detail.
FIG. 10 is a schematic perspective view illustrating specific examples of the nozzle unit 400 and the flow path switching valve 415.
The water discharge nozzle 410 of this specific example is attached to the nozzle mounting base 450 so as to freely advance and retract. The nozzle cleaning chamber 490 is fixed to the nozzle mounting base 450. On the other hand, the motor 480 is a pulse-driven stepping motor, and drives the timing belt 484 via the driving pulley 482. The timing belt 484 is stretched and supported by a driven pulley 486 and a tensioner 488, and applies a driving force to the water discharge nozzle 410 fixed by the latch portion 492 so as to extend and retract in the direction of arrow A. A flow path switching valve 415 is provided at the rear end of the water discharge nozzle 410.

  As will be described in detail later with reference to FIG. 18, the motor 480 performs an initialization operation when the AC power supply 900 is turned on, and determines the reference point of the water discharge nozzle 410. In this embodiment, when the AC power supply 900 is interrupted for a relatively short time, the operation is interrupted, and when the energization is restored, the interrupted operation is continued and resumed without performing the initialization operation. To do. For example, when the AC power supply 900 is interrupted while the water discharge nozzle 410 is advanced in the direction of arrow A, the operation of the motor 480 is stopped by a command from the control unit 500, and the driving state of the motor at that time is controlled by the control unit. 500. Then, when energization of AC power supply 900 is restored before control unit 500 stops operating, control unit 500 determines energization based on the zero-cross detection signal as described above with reference to FIG. Then, the operation of the motor 480 is resumed without performing the initialization operation. That is, the water discharge nozzle 410 restarts the advance operation from a state where it has been stopped based on the information stored in the control unit 500, and advances to a predetermined position.

  In this way, even when a power failure occurs for a short time during the operation of the water discharge nozzle 410, the initialization operation is not performed, and the water discharge nozzle 410 continues to operate and restarts. Therefore, it is easy to use and the reference point of operation does not shift due to a power failure.

FIG. 11 is a schematic perspective view illustrating the internal structure of the water discharge nozzle 410.
In the vicinity of the tip of the water discharge nozzle 410, for example, a water discharge port 402 for injecting a convergent water flow for “wet”, a water discharge port 404 for injecting a diffusion water flow for “wet”, a water discharge port 406 for “bide”, etc. Is provided. Water is supplied to the water outlets from the stator 420 through water channels 412, 414, and 416. That is, the nozzle unit 400 is provided with a plurality of flow paths. Here, the stator 420 is provided at the rear end of the water discharge nozzle 410 and constitutes a part of the flow path switching valve 415.

FIG. 12 is a schematic plan view showing elements constituting the flow path switching valve 415 in an exploded manner.
That is, the flow path switching valve 415 includes the stator 420 shown in FIG. 12A and the rotor 430 shown in FIG. As shown in FIG. 6A, the stator 420 is provided with water inlets 422, 424, and 426 that communicate with the water outlets 402, 404, and 406, respectively. On the other hand, the rotor 430 is provided with a first water flow port 432 and a second water flow port 434. The stator 420 is fixed to the water discharge nozzle 410, and the rotor 430 is rotatably overlapped with the stator 420 to form a flow path switching valve 415. Water supplied from the flow rate adjusting valve unit 300 (FIG. 9) is introduced to the rotor 430 side, and from the water inlets 432 and 434 of the rotor 430, through the water inlets 422, 424 and 426 of the stator 420. 402, 404, and 406. Then, by rotating the rotor 430 with the motor 440 (see FIG. 10), the water supply to the water discharge ports 402, 404, and 406 can be switched. Here, the motor 440 is a pulsed stepping motor.

  FIG. 13 is a schematic plan view illustrating the angular relationship between the stator 420 and the rotor 430. As the rotation angle of the rotor 430 with respect to the stator 420 changes as shown in FIGS. 13A to 13D, the supply of water to the water discharge ports 402, 404, and 406 is switched.

As described above, the water supply to the water discharge ports 402, 404, and 406 can be appropriately switched by the action of the motor 440 and the flow path switching valve 415 (see FIG. 10) provided at the rear end of the water discharge nozzle 410.
Then, as will be described in detail later with reference to FIG. 18, motor 440 also performs an initialization operation when AC power supply 900 is turned on, and determines a reference point for rotor 430. In the present embodiment, when the AC power supply 900 has a power failure for a relatively short time, the interrupted operation is continued and resumed without performing the initialization operation. For example, when the AC power supply 900 is interrupted while the motor 440 is rotating and switching the flow path, the operation of the motor 440 is stopped by a command from the control unit 500. Then, when energization of AC power supply 900 is restored before control unit 500 stops operating, control unit 500 determines energization based on the zero-cross detection signal as described above with reference to FIG. Then, the operation of the motor 440 is resumed without performing the initialization operation. That is, the rotor 430 resumes the advance operation from the stopped state, rotates to a predetermined position, and the flow path is switched.

  In this way, even if a short-time power failure occurs during the rotation of the rotor 430, the initialization operation is not executed, and the rotor 430 continues to rotate and restarts. Therefore, it is easy to use, and the reference point for the rotational operation of the rotor 430 does not shift due to a power failure.

  The configuration of the nozzle unit 400 according to the present embodiment has been described above.

Next, the flow rate adjustment valve unit 300 will be described.
FIG. 14 is a schematic perspective view illustrating the external appearance of the flow rate adjustment valve unit 300.
The flow rate adjustment valve unit 300 includes a flow rate adjustment valve unit 310 that serves as a control valve, and a motor 350. The flow rate adjustment valve unit 310 includes an inlet 312 for introducing water from the heat exchange unit 200, a outlet 316 for supplying water to the nozzle cleaning chamber 490, and a outlet 318 for supplying water to the water discharge nozzle 410. . The motor 350 is a pulsed stepping motor.

FIG. 15 is a cross-sectional view schematically showing the internal structure of the flow rate adjusting valve unit 300.
The flow rate adjusting valve portion 310 has a water inlet chamber 314 partitioned by a blocking wall 360 therein. The blocking wall 360 is supported rotatably by a waterproof seal 362 such as an O-ring, and rotates in conjunction with the drive shaft 352 of the motor 350. A rotor 320 is connected to the drive shaft 352 and can be rotated by a motor 350. On the other hand, the stator 330 is fixed to the flow rate adjusting valve portion 310 so as to face and overlap the rotor 320.

FIG. 16 is a schematic plan view of the stator 330 and the rotor 320.
The stator 330 is provided with water inlets 332 and 334 communicating with the outlets 316 and 318, respectively. Further, the rotor 320 is provided with a notch 322. When the motor 350 rotates the rotor 320, the overlapping state of the rotor notch 322 and the stator water inlets 332 and 334 changes, and the opening and closing of the water passage and the opening degree thereof are controlled. That is, the water introduced from the inlet 312 to the water inlet chamber 314 is led out from the outlets 316 and 318 through the notch 322 of the rotor 320 and the water inlet 332 or 334 of the stator 330.

FIG. 17 is a schematic view illustrating the angular relationship between the rotor 320 and the stator 330. The angle shown in the figure represents the angle from the position where the rotor 320 abuts against a stopper (not shown). As shown in FIGS. 17A to 17F, by changing the rotation angle of the rotor 320 with respect to the stator 330, the water force can be adjusted according to the water discharge state to be executed.
Then, as will be described in detail later with reference to FIG. 18, when the AC power supply 900 is turned on, the motor 350 also executes an initialization operation to determine the reference point of the rotor 320. In the present embodiment, when the AC power supply 900 has a power failure for a relatively short time, the interrupted operation is continued and resumed without performing the initialization operation. For example, when the AC power supply 900 is interrupted while the motor 350 is rotating and changing the water flow, the operation of the motor 350 is stopped by a command from the control unit 500. Then, when energization of AC power supply 900 is restored before control unit 500 stops operating, control unit 500 determines energization based on the zero-cross detection signal as described above with reference to FIG. Then, the operation of the motor 350 is resumed without performing the initialization operation. That is, the rotor 320 resumes the advancing operation from the stopped state, rotates to a predetermined position, and the water force becomes a predetermined state.

  In this way, even when a power failure occurs for a short time during the rotation of the rotor 320, the initialization operation is not performed, and the rotor 320 continues to rotate and restarts. Therefore, it is easy to use, and the reference point for the rotational operation of the rotor 320 does not shift due to a power failure.

  FIG. 18 is an example of a timing chart of the initialization operation executed in the toilet apparatus of the present embodiment. In the figure, the initialization timings of the motor 480 for driving the water discharge nozzle, the motor 440 for driving the flow path switching valve 415, and the motor 350 of the flow rate adjusting valve unit 300 are shown.

  According to the present embodiment, when the AC power supply 900 is turned off after a power failure for a relatively short time, the motor 480, the motor 440, and the motor 350 resume the operation without executing the initialization operation. To do. Therefore, the user does not need to operate the operation unit 4 (see FIG. 1) again, and the predetermined operation is completed.

  Further, as described above with reference to FIG. 4, it is possible to prevent erroneous detection of energization return due to noise in the energization detection process. If it is erroneously detected that the energization has been restored due to noise, control for resuming the operation of the controlled unit 3 (motor 480, motor 440, motor 350, etc.) is started even though the power supply is not actually energized. In this case, after the restart, the control proceeds as though these motors are moving, although they are not actually moving. As a result, for example, although the stepping motor is not rotating, the control proceeds as if the stepping motor has rotated by a predetermined number of pulses, causing a problem that the reference point of operation is shifted.

  On the other hand, according to the present embodiment, in the energization detection process executed during a power failure, a determination based on the fact that a predetermined number of zero-cross detection signals are obtained at a predetermined time makes it possible to make an erroneous determination due to noise. Can be prevented. That is, the problem that the reference point of operation of the controlled unit 3 is shifted due to noise during a power failure can be solved.

Next, a toilet bowl cleaning unit that can be provided in the toilet apparatus will be described.
FIG. 19 is a block diagram illustrating the main configuration of the toilet bowl cleaning unit.
FIG. 20 is a schematic diagram showing the flow path configuration of the toilet bowl cleaning unit.

  This toilet cleaning unit can supply cleaning water to the rim (upper part of the bowl) and the sealing part (lower part of the bowl) of the sitting toilet as described above with reference to FIG. Here, water supply to the rim is referred to as “rim cleaning”, and water supply to the sealed water portion is referred to as “jet cleaning”.

  The configuration of the toilet bowl cleaning unit of this specific example will be described. First, a quantitative control unit (constant flow valve) 820 is provided on the secondary side of the stop cock 810, and further, a flow path opening / closing / switching unit 822, a pressure sensor. 826 and the negative pressure destruction part 828 are provided, and water is supplied to the rim 952 and the sealing part 954, respectively. The channel opening / closing / switching unit 822 is driven by an actuator including a pulsed stepping motor and an electromagnetic clutch, and this actuator is controlled by the control unit 2.

  The flow path switching / flow rate adjusting mechanism provided in the flow path opening / closing / switching unit 822 includes a stator and a rotor similar to the stator 420 and the rotor 430 described above with reference to FIG. That is, switching between rim cleaning and jet cleaning and control of the flow rate are executed based on the relative angular relationship between the stator and the rotor.

FIG. 21 is a graph showing an example of the control angle of the stepping motor of the actuator 824.
When cleaning the toilet bowl, first, the flow path is switched to the rim, and the rim cleaning is executed. Thereby, the bowl surface of the toilet 950 is washed from above, and the excrement is poured into the sealed water. Thereafter, jet cleaning is performed by switching the flow path to the sealed portion. Thereby, sealed water is discharged | emitted with a waste material to a drain pipe. At this time, the flow rate of jet cleaning is changed in three stages, so that reliable drainage is possible with a small amount of water. Thereafter, rim cleaning is performed again, and the sealing water in the bowl of the toilet 950 is formed to a predetermined water level.

  In the above-described series of drainage operations, when the AC power supply 900 is interrupted for a relatively short time, according to the present embodiment, the actuator 824 stops its operation and resumes its operation from that state when energization is restored. At that time, as described above with reference to FIG. 4, the return of energization is not erroneously determined by noise. Therefore, the operation reference point of the actuator is not shifted due to erroneous determination of noise, and the cleaning operation can be reliably restarted and completed.

The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. For example, the characteristics of the specific examples described above with reference to FIGS. 1 to 21 can be appropriately combined within the technically possible range, and these are also included in the scope of the present invention.
Moreover, the electronic device of this embodiment is not limited to a toilet device, but includes all electronic devices that are operated by an AC power source whose frequency changes.
Further, the structure of the toilet device and the content of the initialization operation are not limited to those described above with reference to FIGS. 10 to 21, and those skilled in the art can similarly implement the present invention by changing the design as appropriate. Those that can achieve the above effects are also included in the scope of the present invention as long as they include the gist of the present invention. For example, the water discharge nozzle may advance or retreat due to water pressure, or may have a multistage structure that can slide inside one or a plurality of cylinder bodies.

It is a block diagram which illustrates the principal part composition of the electronic equipment concerning an embodiment of the invention. 2 is a circuit diagram illustrating a specific example of a power supply circuit 1. FIG. It is a state transition diagram of the operation performed in the electronic device of this embodiment. It is a graph for demonstrating operation | movement of the electronic device of this embodiment. It is a graph for demonstrating the operation | movement in a comparative example. It is a flowchart which illustrates the operation | movement performed in the electronic device of this embodiment. It is a flowchart showing another example of the operation | movement performed in the electronic device of this embodiment. It is a model perspective view of the toilet apparatus concerning embodiment of this invention. 2 is a block diagram illustrating the configuration of the toilet apparatus 10. FIG. 4 is a schematic perspective view illustrating specific examples of a nozzle unit 400 and a flow path switching valve 415. FIG. 3 is a schematic perspective view illustrating the internal structure of a water discharge nozzle 410. FIG. FIG. 5 is a schematic plan view illustrating elements constituting the flow path switching valve 415 in an exploded manner. 4 is a schematic plan view illustrating an angular relationship between a stator 420 and a rotor 430. FIG. 4 is a schematic perspective view illustrating the appearance of a flow rate adjusting valve unit 300. FIG. 4 is a cross-sectional view schematically showing the internal structure of the flow rate adjusting valve unit 300. FIG. 3 is a schematic plan view of a stator 330 and a rotor 320. FIG. 4 is a schematic view illustrating the angular relationship between a rotor 320 and a stator 330. FIG. It is an example of the timing chart of the initialization operation | movement performed in the toilet apparatus of this embodiment. It is a block diagram which illustrates the principal part structure of a toilet bowl washing | cleaning unit. It is a schematic diagram showing the flow-path structure of a toilet bowl washing | cleaning unit. 10 is a graph showing an example of a control angle of a stepping motor of an actuator 824. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Power supply circuit, 1A Power supply part, 1B Photocoupler, 1C Phototransistor, 1C Light emitting diode, 1D Phototransistor, 2 Control part, 3 Controlled part, 4 Operation part, 10 Toilet device, 12 Body part, 14 Toilet seat, 16 Toilet Lid, 20 Connection fitting, 22 Water supply piping, 30 Earth leakage protection plug, 32 Power cord, 34 Ground wire, 100 Valve unit, 200 Heat exchange unit, 300 Flow rate adjustment valve unit, 310 Flow rate adjustment valve unit, 312 Inlet, 314 Chamber, 316 outlet, 318 outlet, 320 rotor, 322 notch, 330 stator, 332 water inlet, 334 water inlet, 350 motor, 352 drive shaft, 360 blocking wall, 362 waterproof seal, 400 nozzle unit, 402 water outlet 404 water outlet, 406 water outlet, 4 10 water discharge nozzle, 412 water channel, 415 flow path switching valve, 420 stator, 422 water flow port, 424 water flow port, 426 water flow port, 430 rotor, 432 water flow port, 434 water flow port, 440 motor, 450 nozzle mounting base, 480 motor, 482 Drive pulley, 484 Timing belt, 486 Driven pulley, 488 Tensioner, 490 Nozzle cleaning chamber, 490 Latch part, 492 Latch part, 500 Control part, 570 Power supply circuit, 600 Seating sensor, 700 Remote control, 800 Water tap, 810 Branch water channel , 810 Stop cock, 822 switching unit, 824 actuator, 826 pressure sensor, 828 negative pressure destruction unit, 900 AC power source, 950 Western-style seated toilet, 952 rim, 954 water sealing unit

Claims (7)

A power supply circuit that receives power supply from an AC power supply that changes in frequency, detects a zero cross of the AC power supply, and outputs a zero cross detection signal;
A control unit for outputting a control signal;
A controlled unit that operates based on the control signal;
With
The control device restarts the operation of the controlled portion when the AC power supply is interrupted and the zero cross detection signal is received a predetermined number of times or more within a predetermined time.   2. The electronic device according to claim 1, wherein when the AC power supply fails, the control unit stops the operation of the controlled unit and stores a state in which the operation of the controlled unit is stopped.   The electronic device according to claim 2, wherein when the operation of the controlled unit is resumed, the control unit resumes the operation from the stopped state. A power supply circuit that receives power supply from an AC power supply that changes in frequency, detects a zero cross of the AC power supply, and outputs a zero cross detection signal;
A control unit for outputting a control signal;
A motor that performs initialization operation at the start of power supply and operates by pulse driving based on the control signal;
A water discharge nozzle advanced and retracted by the motor;
With
When the AC power supply fails during driving of the motor, the control unit restarts the operation of the motor when the zero cross detection signal is received a predetermined number of times within a predetermined time. apparatus. A power supply circuit that receives power supply from an AC power supply that changes in frequency, detects a zero cross of the AC power supply, and outputs a zero cross detection signal;
A control unit for outputting a control signal;
A motor that performs initialization operation at the start of power supply and operates by pulse driving based on the control signal;
A control valve driven by the motor;
With
When the AC power supply fails during driving of the motor, the control unit restarts the operation of the motor when the zero cross detection signal is received a predetermined number of times within a predetermined time. apparatus.   The toilet device according to claim 4 or 5, wherein when the AC power supply fails, the control unit stops the operation of the motor and stores a state in which the operation of the motor is stopped.   The toilet device according to claim 6, wherein when the operation of the motor is resumed, the control unit resumes the operation from the stopped state.

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