JP4274890B2 - Hot wire automatic switch for toilet - Google Patents

Description

  The present invention relates to a hot-wire automatic switch for a toilet having two types of timer modes for a timer that defines the lighting holding time of a lighting load.

  Conventionally, a hot-wire automatic switch for toilets that turns on and off the lighting load or operates a ventilation fan according to a person entering or leaving the toilet room has been used. This type of hot-wire automatic switch for toilets uses a heat sensor (generally using a pyroelectric infrared sensor) that detects heat rays radiated from the human body, a human sensor that detects the presence or absence of a person, and toilet room illumination. If the person enters the toilet room when the surroundings are dark, such as at night, it is determined whether the person is in the toilet room based on the output of the human sensor. The lighting load is turned off when a person leaves the toilet room.

  The human sensor is configured to output a detection signal when a person moves by detecting changes in the heat dose, and even if a person is in the field of view, there is no movement and the heat dose changes. If it does not occur, no detection signal is sent from the human sensor. In other words, if the illumination load is turned on only when a detection signal is obtained, when the person stops moving, the illumination load is turned off even though the person is in the field of view of the heat ray sensor. It is inconvenient.

  Therefore, every time a detection signal is generated, a predetermined lighting holding time is timed from the time of generation, and the lighting load is continuously lit during the time period. In other words, if a detection signal is generated during the lighting hold time period, the lighting holding time is set again from that point in time, and the state in which the detection signal cannot be obtained from the human sensor is the lighting holding time. Until it is reached, it is considered that a person exists. When the lighting holding time expires by such an operation, it is determined that the person has left the toilet room, and the lighting load is turned off.

  The lighting holding time can be adjusted in the range of about 30 seconds to about 6 minutes, for example, depending on the installation environment. However, since it is common to urine and stool with different stay time and rest time, If you adjust it to the main body shortly, it will turn off frequently during stool, and if you adjust the stool longer, the lighting time will be longer after leaving the room. As a result, the lighting time after leaving the room is long, and there is a difficulty in turning off the light during the stool. As a countermeasure, there is a product that gives a turn-off notification (fade out) function that gradually turns off about 6 seconds before turning off, and if you feel that it turns off gradually, move your body and encourage you to turn it on again.

The ventilation fan is operated regardless of the illuminance of the toilet. When a person enters the toilet room, the operation starts and stops when the operation maintenance time (for example, 5 minutes) expires after leaving, and after the person leaves the toilet room. There is a method to start operation and stop when the operation maintenance time expires. There is also a product that has a function of switching to a continuous operation of a ventilation fan by “connect / disconnect” operation within 2 seconds of the wall switch and returning to sensor operation by “connect / disconnect” operation of the wall switch for 2 seconds or more.
JP 2001-91017 A Matsushita Electric Works catalog "Teru D-959 as of March, April" 393P to 395P Koizumi Sangyo Catalog “AKARI Senka 2003-2004 vol.22” p.177

  The problem to be solved is that the lighting holding time corresponding to each of urine and stool cannot be provided.

  The present invention is characterized by providing a lighting holding time corresponding to each of urine and stool, and setting and switching at startup corresponding thereto.

  The hot-wire automatic switch for toilets of the present invention is provided with two timer modes, a short timer mode and a long timer mode, in the lighting timer that defines the lighting holding time corresponding to each of urine and stool. Because the frequency of urine usage is high at the time of start-up, the timer mode is set to the short-time timer mode. Switching to the long-time timer mode is performed by the “connect / disconnect” operation of the wall switch. This can be done with the “connect / disconnect” operation or by automatic switching. This contributes to energy saving and effective operation.

  There are urine and urine in the usage form of the toilet room, and the stool is short and the stool is long in the stay time and the rest time in the stool. For this reason, two timer modes, a short time timer mode and a long time timer mode, are provided for the lighting timer that defines the lighting retention time of urine and stool. The lighting holding time in the short timer mode can be adjusted in the range of about 30 seconds to about 1 minute 30 seconds depending on the installation environment, and the lighting holding time in the long time timer mode is about 5 minutes. A timer mode setting switching control unit is provided in order to perform setting and switching at startup of the two timer modes. By controlling this timer mode setting switching control unit by operating an external wall switch, a hot-wire automatic switch for toilets that contributes to energy saving and effective operation was realized.

  FIG. 1 is a block diagram and a circuit diagram of an embodiment of a hot-wire automatic switch for a toilet according to claim 1, in which a commercial power supply terminal (reference numeral T <b> 1) is connected to a lighting load. An illumination output terminal (symbol T2) is provided. The commercial power source connected to T1 passes through the wall switch, and the apparatus is controlled by the wall switch operation. Next, the circuit of each part will be described.

  The power supply unit (reference numeral 1) rectifies the commercial power supply and outputs a stabilized DC constant voltage power supply in two systems (+) C and (+). (+) The C power supply system uses a rectifier D1 and a holding capacitor C3 as a power supply that slowly drops in voltage when the wall switch is turned off. The timer mode setting switching control unit (reference numeral 2) IC3, related circuits, and people Supplied to the sensor (reference numeral 3) (+) The power supply system shall be a power supply that quickly drops the voltage when the wall switch is turned off and supplied to other circuits.

  The timer mode setting switching control unit includes a T-type flip-flop IC3 (for example, a D-type flip-flop IC TC4013B is used as a T-type flip-flop) and related circuits. When the power is turned on by the wall switch “contact” operation at the time of start-up, the SET1 terminal of IC3 is set to the L level after being set to the H level for a short time by C6 and R16. As a result, the Q1 terminal becomes H level and the Q1 bar terminal becomes L level. The outputs of the Q1 terminal and the Q1 bar terminal are supplied to the illumination control unit (reference numeral 4) at an H level to form a short time timer mode and a long time timer mode. The start-up timer mode is a short-time timer mode.

  The timer mode is switched by switching the IC3 CLOCK1 terminal from L level to H level and switching the output of the Q1 terminal and Q1 bar terminal (switching the timer mode). There are manual switching for switching the two timer modes alternately by operation and automatic switching from the long time timer mode to the short time timer mode.

  Manual switching is based on the fact that the (+) C power supply drops slowly and the (+) power supply drops quickly during the previous “disconnect” operation of the wall switch “connect / disconnect” operation. (+) The “stage” operation at the subsequent stage is performed within a time period during which the output level of the IC 3 can be maintained with the voltage of the C power supply. The time interval from the “disconnect” operation to the “contact” operation depends on the capacity of the holding capacitor C3, the current consumption of each circuit, the power supply characteristics of the IC3, etc., but can be within a practical range (for example, about 1 to 5 seconds). To do. If there is no subsequent “contact” operation and the output level of the IC 3 cannot be maintained at the voltage of the (+) C power supply, the next “contact” operation becomes the “contact” operation at the time of activation.

  In the short timer mode, the input terminal 13 of NAND4 (ex. TC74HC00A, NAND1 to NAND3 is also the same) is L level, so Tr1 is ON when the base is H level and IC3's CLOCK1 terminal is L level. During timer mode operation, the OutPut terminal of the illumination timer IC1 (for example, LMC555) of the illumination controller (reference numeral 4) is at the H level, and the input 12 terminal of NAND4 via the inverter 3 (using NAND3) is at the L level. Therefore, Tr1 is turned ON when the base is at the H level, and the CLOCK1 terminal of IC3 is set to the L level. In this state, if the wall switch “disconnect” operation at the previous stage is performed, the H level of the output 11 terminal of NAND4 which has turned on Tr1 quickly loses energy (voltage drop), Tr1 is turned off, and the CLOCK1 terminal of IC3 From L level to H level. As a result, the outputs of the Q1 terminal and the Q1 bar terminal are reversed. When the power is turned on again by the “contact” operation at the subsequent stage, the timer mode after switching is operated.

  In automatic switching from long-time timer mode to short-time timer mode, when the lighting hold time expires in long-time timer mode, the IC1 OutPut pin changes from H level to L level, and this causes the inverter 3 output 8 pin Changes from L level to H level and starts charging C5 via R11. When charging of C5 progresses and the input 12 terminal of NAND4 reaches the H level, the output 11 terminal becomes L level together with the H level of the input 13 terminal, Tr1 is turned OFF, and the CLOCK1 terminal of IC3 is changed from L level to H level. To launch. As a result, the output of the Q1 terminal and the Q1 bar terminal is reversed. From the expiration of the time limit of the timer mode to the time when the input 12 terminal of the NAND4 becomes H level is the gate time of the timer mode automatic switching. When the body is moved during this timing and the human sensor is detected, Restart in long-time timer mode. The gate time is about 10 seconds.

  The presence / absence of a person in the toilet room is detected by a human sensor (for example, MP motion sensor NaPiOn, which is called a human body detection infrared sensor in the manufacturer) including a pyroelectric infrared sensor, an amplifier circuit, and a comparator output circuit. The pyroelectric infrared sensor generates an output voltage with an amplitude corresponding to the change in the received heat dose, and when the output voltage changes more than a specified threshold, a pulse detection signal is output from the human sensor. The (+) The C power supply is turned off when the wall switch “OFF” operation is performed before the timer mode manual switching, and an unstable detection signal is prevented from being output when the wall switch “contact” operation is performed later.

  The human sensor is configured to output a detection signal when a person moves by detecting a change in the heat dose. Even if a person is present in the field of view, there is no movement and the heat dose changes. If this does not occur, the detection signal is not sent from the human sensor. In other words, if the illumination load is turned on only when a detection signal is obtained, the illumination load is turned off when the person stops moving, even though the person is in the field of view of the heat ray sensor. It is inconvenient.

  Therefore, when receiving a pulse-like detection signal (H level) from the human sensor, the illumination control unit converts it to L level by the inverter 1 (using NAND1) and supplies it to the trigger (Trigger bar) terminal of IC1. Each time the trigger terminal receives the L level signal, it stops the timed operation, resets the timer that times the predetermined lighting holding time, and sets the OutPut terminal to the H level.

  When the OutPut terminal of IC1 becomes H level in the short-time timer mode, the L level of the D5 and D6 cathode terminals disappears. Therefore, the base of Tr2 is turned on while shifting from L level to H level in a short time by C9 and R8. The lighting load is turned on softly via the illumination opening / closing section (reference numeral 5) via R6, Tr2. When the OutPut terminal of IC1 becomes H level in the long time timer mode, the L level of the D7 and D8 cathode terminals disappears, so that the lighting load is turned on via the lighting opening / closing unit via R7, LED and Tr3. At this time, the LED also lights up, indicating that the current timer mode is the long-time timer mode.

  The lighting holding time formula is T = 1.1RC seconds, RC in the short time timer mode is (R4 + VR1) C4, and the variable resistor VR1 has a time limit of about 30 seconds to about 1 minute 30 seconds. Adjustable. The RC in long timer mode adjusts the time limit to about 5 minutes with R5C4. The positive power supply of the RC circuit receives the H level from the output Q terminal and Q bar terminal of IC3 via D3 and D4.

  The threshold (Thresh) terminal connected to the trigger terminal of IC1 starts the timed operation of IC1 when the L level of the output 3 terminal of inverter 1 disappears without the detection signal of the human sensor, and capacitor C4 over time Is charged and the threshold terminal potential rises to 2/3 of the V1 terminal voltage of IC1, the OutPut terminal becomes L level, and the lighting load is turned off via the lighting opening / closing part.

  The lighting opening / closing part receives the operation mode designation by H level in the short time timer mode or long time timer mode, and further receives the detection signal of the human sensor, and when the OutPut terminal of IC1 becomes H level, Tr2 or Tr3 is turned on In response to the operation signal, the lighting load is controlled to be turned on. When there is no detection signal from the human sensor and the time limit of the lighting holding time of IC1 expires, the OutPut terminal becomes L level, and the lighting load is controlled to be extinguished in response to a stop signal by turning off Tr2 or Tr3 that has been turned on. The illumination opening / closing section is composed of SSR1 (solid state relay, for example, TLP3520A), and is inserted into the output terminal T2 using a triac as a switch element.

  FIG. 2 is a block diagram and circuit diagram of an embodiment of a hot-wire automatic switch for toilets according to claim 2. FIG. 2 is a diagram in which a portion related to the illuminance sensor (reference numeral 6) is added to FIG. 1, so that the evening wall switch “contact” operation and the morning wall switch “off” operation can be omitted. Next, changes will be described.

  The main changes from FIG. 1 are the addition of an illuminance sensor, an inverter 2 (using NAND2), and peripheral circuits. The illuminance sensor element (example CDS) has one end connected to the (+) power supply, one end connected to the ground via R19, VR2, and the output of the illuminance sensor connected to the input 4 (5) terminal of the inverter 2 via R20. The output 6 terminal is connected to the base of Tr2 via D12. The illuminance setting volume VR2 allows the specified value of the lighting illuminance to be variably adjusted. In the short-time timer mode, when the illuminance in the toilet room detected by the illuminance sensor is not less than the specified value, the input 4 (5) terminal of the inverter 2 is H level and the cathode terminal of D12 is L level. To do. For this reason, even if the human sensor detects the presence of a person and sends a detection signal, Tr2 continues to be OFF and the illumination load is not lit.

  In the short-time timer mode, when the illuminance in the toilet room detected by the illuminance sensor is less than the specified value (dark state), the input 4 (5) terminal of the inverter 2 is at L level and the cathode terminal of D12 is Become H level. Each time the presence sensor detects the presence of a person and sends a detection signal, the output 3 terminal of the inverter 1 becomes L level, and the trigger terminal of the IC 1 stops the timed operation every time it receives the L level signal. While resetting the lighting timer that limits the lighting holding time, the OutPut terminal is set to H level, and the lighting load is turned on via the lighting opening / closing part. D13 is for continuing lighting even when the illuminance in the toilet room becomes brighter than a specified value.

  In the long-time timer mode, the illumination load is turned on / off according to the output of the OutPut terminal of the IC 1 regardless of the illuminance of the toilet room because the circuit configuration is irrelevant to the illuminance sensor. This makes it possible to turn on the light by setting the timer mode for a long time even when the illuminance in the toilet room is not less than a specified value, and is effective when reading a newspaper in the toilet room.

  FIG. 3 is a block diagram and circuit diagram of an embodiment of a hot-wire automatic switch for toilets according to claim 3. FIG. 3 is a diagram in which a ventilation fan control unit (symbol 7), a ventilation fan opening / closing unit (symbol 8) and a ventilation fan load output terminal (symbol T3) are added to FIG. The ventilation fan is operated in conjunction with the output. Next, changes will be described.

  The ventilation fan control unit mainly includes a ventilation fan timer IC4 (for example, LMC555), Tr4, and a ventilation fan switch, and gives a control signal to the ventilation fan opening / closing unit to control the ventilation fan load. R21 and C10 set the operation holding time of the ventilation fan to about 5 minutes. The trigger terminal of IC4 detects the presence of a person, sends a detection signal, and when the OutPut terminal of IC1 is set to H level, it receives the L level signal via inverter 3, resets the ventilation fan timer, Set the OutPut terminal to H level. At this time, when the ventilation fan switch is “ON when entering the room”, the L level of the D15 and D16 cathode terminals disappears, so Tr4 is turned on when the base is at the H level, and the operation of the ventilation fan load is started via the ventilation fan opening / closing section.

When the ventilation fan switch is “ON when leaving the room”, the D15 cathode terminal is at the L level, so Tr4 continues to be OFF when the base is at the L level. When the time limit of IC1 expires and the OutPut terminal is set to L level, the D15 cathode terminal L level disappears, so Tr4 is ON.
Then, the operation of the ventilation fan load is started through the ventilation fan opening / closing section. Further, IC4 starts a time limit of the operation holding time, and when the time limit expires, the OutPut terminal becomes L level, Tr4 turns OFF when the base is L level, and the operation of the ventilation fan load is stopped via the ventilation fan opening / closing section. The “ON when leaving” function of the ventilator switch takes into account noise during operation of the ventilator.

  The ventilator opening / closing unit receives the operation signal from Tr4 and starts the operation of the ventilator fan load, and receives the stop signal and stops the operation of the ventilator fan load. The ventilator opening / closing part is composed of SSR2 (solid state relay, for example, TLP3502), and is inserted into the output terminal T3 using a triac as a switch element.

  FIG. 4 is a block diagram and circuit diagram of an embodiment of a hot-wire automatic switch for toilets according to claim 4. FIG. 4 is different from FIG. 3 in that the ventilation fan control unit is changed to a ventilation fan control unit (reference numeral 9) corresponding to an external ventilation fan opening / closing part, and the ventilation fan opening / closing part is changed to an external ventilation fan opening / closing part (reference numeral 10). Code T4) and control line input terminal (code T5) are added, and the commercial power to the external ventilation fan opening / closing part is input with a plug, and the ventilation fan is output with an outlet. This is applicable when the electrical wiring of the residential toilet is divided into lighting and ventilation fans. Next, changes will be described.

  The control line output terminal of the ventilator control unit corresponding to the external ventilator opening / closing unit outputs polarity (+) via the (+) power supply, R22, and polarity (-) via the Tr4 collector. Connect to the polarity (+) and polarity (-) of the control line input terminal. The external ventilation fan opening / closing section takes in commercial power from a ventilation fan outlet, outputs it from the outlet using the triac in the SSR 2 as a switch element, and supplies it to the ventilation fan load. When there is a ventilation fan wall switch, the operation of the ventilation fan load can be stopped regardless of the operation of the human sensor detecting the presence of a person.

  This device shortens the time until the lights are turned off after leaving the room by using the short-time timer mode, minimizes the lights-out in the stool during a stool by using the long-time timer mode, and is easy to operate. It can be used as an operation method for household toilet lighting. Further, in a general residential toilet, there are cases where the wiring for lighting and the ventilation fan are separate wirings.

It is a block diagram and circuit diagram relating to claim 1. Example 1 It is a block diagram and circuit diagram relating to claim 2. (Example 2) It is a block diagram and circuit diagram relating to claim 3. (Example 3) It is a block diagram and circuit diagram relating to claim 4. (Example 4)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply part 2 Timer mode setting switching control part 3 Human sensor 4 Illumination control part 5 Illumination opening / closing part 6 Illuminance sensor 7 Ventilation fan control part 8 Ventilation fan opening / closing part 9 Ventilation fan control part corresponding to external ventilation fan opening / closing part 10 External ventilation fan opening / closing part
T1 power supply terminal
T2 Lighting load output terminal
T3 Ventilation fan load output terminal
T4 Control line output terminal
T5 Control line input terminal

Claims (4)

  A human sensor that detects the presence or absence of a person by detecting heat rays emitted from the human body and a lighting timer that has a short timer mode for urine and a long timer mode for stool, It is operated by the lighting control unit that controls lighting load lighting and the external wall switch for the time until the state where no person is detected reaches the specified lighting holding time after the person's entry into the room is detected and activated The time is set to the short time timer mode by the wall switch “contact” operation. Switching to the long-time timer mode is performed by the wall switch “disconnect” operation. Further, switching to the short-time timer mode is performed by a wall switch “connection / disconnection” operation or automatic switching when the long-time timer mode and the gate timer are over. In this way, the timer mode setting switching control unit for setting and switching the timer mode at startup, the lighting opening / closing unit controlled by the lighting control unit to turn off and off the lighting load, and the DC constant voltage power supply “off” operation of the wall switch A hot-wire automatic switch for toilets, comprising a power supply unit having a system that slowly drops voltage and a system that quickly drops voltage.   A human sensor that detects the presence or absence of a person by detecting the heat rays radiated from the human body, an illuminance sensor for detecting the illuminance in the toilet, a short-time timer mode for urine, and a long-time timer mode for stool When the illuminance in the toilet is dark in the short-time timer mode and in the long-time timer mode, the lighting timer has a condition that no human is detected after the human sensor enters the toilet room. Controls lighting load lighting for the time until the lighting holding time is reached, and when the illuminance in the toilet room is bright in the short-time timer mode, the lighting load is kept off even if a human sensor detects a person entering the toilet room It is operated by the lighting control unit and the external wall switch, and the setting at the time of activation is set to the short time timer mode by the wall switch “contact” operation. Switching to the long-time timer mode is performed by the wall switch “disconnect” operation. Further, switching to the short-time timer mode is performed by an operation of “connecting / disconnecting” the wall switch or by automatic switching when the long-time timer mode and the gate timer expire. In this way, the timer mode setting switching control unit for setting and switching the timer mode at startup, the lighting opening / closing unit controlled by the lighting control unit to turn off and off the lighting load, and the DC constant voltage power supply “off” operation of the wall switch A hot-wire automatic switch for toilets, comprising a power supply unit having a system that slowly drops voltage and a system that quickly drops voltage.   A human sensor that detects the presence or absence of a person by detecting the heat rays radiated from the human body, an illuminance sensor for detecting the illuminance in the toilet, a short-time timer mode for urine, and a long-time timer mode for stool When the illuminance in the toilet is dark in the short-time timer mode and in the long-time timer mode, the lighting timer has a condition that no human is detected after the human sensor enters the toilet room. Controls lighting load lighting for the time until the lighting holding time is reached, and when the illuminance in the toilet room is bright in the short-time timer mode, the lighting load is kept off even if a human sensor detects a person entering the toilet room Start the operation when the person entering the toilet room is detected by the lighting control unit and the human sensor, or start the operation when the lighting holding time expires, and keep the specified operation Time to between expires, a ventilating fan control unit for controlling the operation of the ventilation fan is operated by an external wall switch, set at startup and short timer mode due to the wall switch "contact" operation. Switching to the long-time timer mode is performed by the wall switch “disconnect” operation. Further, switching to the short-time timer mode is performed by an operation of “connecting / disconnecting” the wall switch or by automatic switching when the long-time timer mode and the gate timer expire. In this way, the timer mode setting switching control unit that performs setting and switching at the start of the timer mode, the lighting opening / closing unit that is controlled by the lighting control unit to turn off the lighting load, and the ventilation fan opening / closing that is controlled by the ventilation fan control unit and operates the ventilation fan load And a hot-wire automatic switch for a toilet linked with a ventilation fan, characterized in that the DC constant voltage power supply has a power supply part having a system in which the voltage gradually drops by a “switch-off” operation of the wall switch and a system in which the voltage drops quickly .   The hot-wire automatic switch for a toilet according to claim 3, wherein the ventilation fan opening / closing part is separated into an external ventilation fan opening / closing part.

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