JP4802700B2 - Wireless wiring equipment - Google Patents

Description

  The present invention relates to a wireless wiring device for turning on and off a load by a wireless signal.

  In general, mechanical switches are widely used to turn on and off the load, but in recent years, electronic switches have also been adopted. In an electronic switch, in many cases, a switch element such as a triac or a thyristor is inserted between a power supply and a load, and power supply to the load is turned on / off by controlling on / off of the switch element.

  In order to be able to replace this type of electronic switch with a mechanical switch, it is necessary to be able to connect to a series circuit of a power source and a load with two wires like a mechanical switch.

  On the other hand, in an electronic switch, it is necessary to supply power to a control circuit unit that instructs on / off of a switch element, and a power circuit unit is provided to supply power to a control circuit unit from a series circuit of a power source and a load ( For example, see Patent Document 1).

  Since the switch element is inserted in the series circuit of the power supply and the load, only the voltage drop due to the switch element can be used in the power supply circuit section during the period when the switch element is on. In addition, since the load and the power supply circuit unit are connected in series, the power supplied to the load decreases when the power supplied to the control circuit unit increases during the period when the switch element is on. Therefore, very little power can be supplied from the power supply circuit during the period in which power is supplied from the power supply to the load.

  Further, while the switch element is off, power can be supplied from the power source to the control circuit unit through the load.However, when the current flowing through the load increases, the load malfunctions. Very little power can be supplied from the power circuit.

  Although not described in Patent Document 1, a configuration shown in FIG. 9 is conceivable as this type of electronic switch. The illustrated configuration controls on / off of a load Ld such as a ventilation line, and includes a load switching unit 11 inserted in a series circuit of a power source AC such as a commercial power source and a load Ld. A series circuit of the power supply AC and the load Ld is connected to two connection terminals X1 and X2 which are both ends of the load circuit unit 11.

  The load opening / closing unit 11 includes a switch element SW composed of a triac, and turns on / off the supply of power to the load Ld by turning on / off the switch element SW. The AC input terminal of the diode bridge DB is connected between the T2 terminal and the gate terminal of the switch element SW, and the DC output terminal of the diode bridge DB is connected to the two voltage stabilizing circuits 12a and 12b.

  Each of the voltage stabilizing circuits 12a and 12b is a serial control type and includes transistors Q1 and Q2. One voltage stabilization circuit 12a supplies power during a period in which the voltage between the DC output terminals of the diode bridge DB is equal to or higher than the Zener voltage of the Zener diode ZD1 when the switch element SW is OFF, and the other voltage stabilization circuit 12b supplies power during a period in which the voltage between the DC output terminals of the diode bridge DB is equal to or higher than the Zener voltage of the Zener diode ZD2 when the switch element SW is on. Both voltage stabilizing circuits 12a and 12b share a smoothing capacitor C1. The voltage across the smoothing capacitor C1 is further stabilized by the three-terminal regulator Reg. A smoothing capacitor C2 is connected to the output terminal of the three-terminal regulator Reg, and power is supplied to the smoothing capacitor C2 control circuit unit 10.

  The control circuit unit 10 includes a control unit CN that is a microcomputer or a timer circuit, and a binary signal is output from the control unit CN. The output of the control unit CN is given to a transistor Q3 as a switching element connected to the base of the transistor Q2. When the binary signal output from the control unit CN is set to the H level and the L level, the transistor Q3 is turned on when the output of the control unit CN is at the H level, and the transistor Q2 is turned on, whereby the voltage stabilization circuit 12b. Works. On the other hand, when the output of the control unit CN is at the L level, the voltage stabilization circuit 12b is not operated.

  The Zener diode ZD2 provided in the voltage stabilization circuit 12b is connected to the gate terminal of the thyristor Q4 connected between the DC output terminals of the diode bridge DB. When the voltage stabilization circuit 12b operates, the thyristor Q4 is also turned on. Become. Therefore, a trigger voltage is applied to the gate terminal of the switch element SW via the diode bridge DB, and as a result, the switch element SW is turned on.

In short, when the output of the control unit CN is at the H level, the voltage stabilizing circuit 12b operates and the switch element SW is turned on. Further, when the output of the control unit CN is at L level, the voltage stabilizing circuit 12b is not operated, and therefore the trigger voltage is not applied to the switch element SW. With the above operation, on / off of the switch element SW is controlled according to the output of the control unit CN.
Japanese Patent Application No. 2000-1000029

  By the way, in order to give an instruction to turn on / off the switch element SW to the control circuit unit 10 in the electronic switch, it is conceivable to use a wireless signal using light or radio waves as a transmission medium. In this case, it is necessary to provide a wireless receiver for receiving a wireless signal in the electronic switch. Since the wireless receiver needs to wait for a wireless signal, power consumption increases accordingly. As described above, since the power supply circuit unit 12 provided in the electronic switch is provided to supply power to the control circuit unit 10, when a wireless reception unit is provided, the wireless circuit unit 12 waits for a wireless signal continuously. There is no room to supply the power.

  In order to solve this kind of problem, it is conceivable to adopt a configuration in which three lines are connected so that power is directly supplied from the power source AC to the power supply circuit unit 12. It cannot be replaced with a switch.

  In order to enable wireless signal reception in a configuration in which a power source AC and a load Ld are connected to a series circuit of two lines, it is conceivable to increase the output capacity of the power source circuit unit 12, but as described above, the switch Increasing the power consumption of the electronic switch when the element SW is off leads to a malfunction of the load Ld. For example, when an illumination load is used as the load Ld, there arises a problem that the illumination load is turned on only momentarily or erroneously turned on by a current flowing through the electronic switch in a state where the switch element SW is turned off. This type of problem is particularly noticeable when using radio waves as a wireless signal transmission medium because power consumption is greater than when using light.

  The present invention has been made in view of the above-mentioned reasons, and its purpose is to enable the switch element to be turned on and off by a wireless signal while allowing a two-wire connection so that it can be replaced with a mechanical switch. An object of the present invention is to provide a wireless wiring device that suppresses an increase in power consumption.

The invention according to claim 1 includes a load opening / closing section having a pair of connection terminals for connecting a series circuit of a power source and a load, and a switch element inserted between the connection terminals, and a control circuit section for controlling on / off of the switch element; A power supply circuit unit that generates an internal power supply that can operate the control circuit unit using the power supplied from the connection terminal, and a transmission signal of a predetermined plurality of frames having the same content from the transmitter in one transmission of the transmitter. A wireless receiving unit that receives a wireless signal repeatedly transmitted intermittently and causes the control circuit unit to control on / off of the switch element according to the instruction content of the wireless signal, and the control circuit unit wirelessly receives from the power circuit unit The reception standby period in which the wireless signal can be received by supplying power to the power supply unit, and the power supply from the power supply circuit unit to the wireless reception unit is stopped. And a pause period in which reception of wireless signals is disabled alternately. The reception standby period is longer than the transmission time occupied by the transmission signal of one frame, and the pause period is longer than the transmission interval of the transmission signal. In addition, it is set so that a plurality of reception waiting periods are included in a period in which a transmission signal of a predetermined plurality of frames is generated by one operation of the transmitter, and the wireless signal includes a synchronization header and a control The control circuit unit has voltage monitoring means for determining whether or not the output voltage of the power supply circuit unit is equal to or higher than an operation guarantee voltage that guarantees the operation of the wireless reception unit. When the reception of the header is completed, it is determined whether or not the control message can be received in the remaining time of the reception waiting period. When the control message cannot be received, the voltage monitoring means exceeds the operation guarantee voltage. Characterized by extending the listening period within a period that is determined.

According to this configuration, the power supply and the load are connected to the series circuit of the power source and the load by two wires so that the mechanical switch can be replaced, and the power supply to the wireless reception unit provided for receiving the wireless signal is intermittently supplied. Therefore, an increase in power consumption in the switch body can be suppressed, and power can be supplied to the wireless reception unit without reducing the power supplied to the load. In addition, while adding the function of receiving wireless signals to the switch body, the power consumption in the switch body is small, so that the load operates even when a current flows through the series circuit of the power supply and the load when the switch element is off. A large current does not flow through the switch element, and malfunction of the load when the switch element is off can be prevented. In addition, while the transmission signal of a predetermined plurality of frames is repeatedly transmitted intermittently by one operation of the transmitter, the pause period of the wireless reception unit is longer than the transmission interval of the transmission signal, and the transmitter The wireless signal from the transmitter in at least one reception waiting period is set so that a plurality of reception waiting periods are included in a period in which transmission signals of a predetermined plurality of frames are generated by one operation of Can be received. That is, as described above, it is possible to receive a wireless signal from the transmitter while suppressing an increase in power consumption in the wireless receiving unit.

In addition, while the reception standby period can be extended, the reception standby period is terminated when the output voltage of the power supply circuit section falls below the operation guarantee voltage, so there is no need to increase the power supplied to the wireless reception section. There is no need to increase the output capacity of the unit. That is, it is possible to suppress an increase in power consumption in the switch body while enabling an extension of the reception standby period.

The invention according to claim 2 includes a load opening / closing section having a pair of connection terminals for connecting a series circuit of a power source and a load, and a switch element inserted between the connection terminals, and a control circuit section for controlling on / off of the switch element; A power supply circuit unit that generates an internal power supply that can operate the control circuit unit using the power supplied from the connection terminal, and a transmission signal of a predetermined plurality of frames having the same content from the transmitter in one transmission of the transmitter. A wireless receiving unit that receives a wireless signal repeatedly transmitted intermittently and causes the control circuit unit to control on / off of the switch element according to the instruction content of the wireless signal, and the control circuit unit wirelessly receives from the power circuit unit The reception standby period in which the wireless signal can be received by supplying power to the power supply unit, and the power supply from the power supply circuit unit to the wireless reception unit is stopped. And a pause period in which reception of wireless signals is disabled alternately. The reception standby period is longer than the transmission time occupied by the transmission signal of one frame, and the pause period is longer than the transmission interval of the transmission signal. In addition, it is set so that a plurality of reception waiting periods are included in a period in which transmission signals of a predetermined plurality of frames are generated by one operation of the transmitter, and the wireless signal is controlled with a synchronization header. When the reception of the header is completed, the control circuit unit determines whether or not the control message can be received in the remaining time of the reception waiting period. When the control message cannot be received, the next reception is performed. The idle period is adjusted so that the wireless signal can be received in the standby period.

According to this configuration, the power supply and the load are connected to the series circuit of the power source and the load by two wires so that the mechanical switch can be replaced, and the power supply to the wireless reception unit provided for receiving the wireless signal is intermittently supplied. Therefore, an increase in power consumption in the switch body can be suppressed, and power can be supplied to the wireless reception unit without reducing the power supplied to the load. In addition, while adding the function of receiving wireless signals to the switch body, the power consumption in the switch body is small, so that the load operates even when a current flows through the series circuit of the power supply and the load when the switch element is off. A large current does not flow through the switch element, and malfunction of the load when the switch element is off can be prevented. In addition, while the transmission signal of a predetermined plurality of frames is repeatedly transmitted intermittently by one operation of the transmitter, the pause period of the wireless reception unit is longer than the transmission interval of the transmission signal, and the transmitter The wireless signal from the transmitter in at least one reception waiting period is set so that a plurality of reception waiting periods are included in a period in which transmission signals of a predetermined plurality of frames are generated by one operation of Can be received. That is, as described above, it is possible to receive a wireless signal from the transmitter while suppressing an increase in power consumption in the wireless receiving unit. In addition, even if the entire wireless signal cannot be received in the reception standby period in which the header is received, there is a high possibility that the wireless signal can be received in the next reception standby period. The average response time until response is shortened.

According to a third aspect of the present invention, there is provided a load opening / closing unit having a pair of connection terminals for connecting a series circuit of a power source and a load and having a switch element inserted between the connection terminals, a control circuit unit for controlling on / off of the switch element, A power supply circuit unit that generates an internal power supply that can operate the control circuit unit using the power supplied from the connection terminal, and a transmission signal of a predetermined plurality of frames having the same content from the transmitter in one transmission of the transmitter. A wireless receiving unit that receives a wireless signal repeatedly transmitted intermittently and causes the control circuit unit to control on / off of the switch element according to the instruction content of the wireless signal, and the control circuit unit wirelessly receives from the power circuit unit The reception standby period in which the wireless signal can be received by supplying power to the power supply unit, and the power supply from the power supply circuit unit to the wireless reception unit is stopped. And a pause period in which reception of wireless signals is disabled alternately. The reception standby period is longer than the transmission time occupied by the transmission signal of one frame, and the pause period is longer than the transmission interval of the transmission signal. In addition, it is set so that a plurality of reception waiting periods are included in a period in which transmission signals of a predetermined plurality of frames are generated by one operation of the transmitter, and the wireless signal is controlled with a synchronization header. The control circuit unit determines whether or not the control message can be received in the remaining time of the reception waiting period when reception of the header is completed. When the control message cannot be received, the control circuit unit waits for reception. The period is ended.

According to this configuration, the power supply and the load are connected to the series circuit of the power source and the load by two wires so that the mechanical switch can be replaced, and the power supply to the wireless reception unit provided for receiving the wireless signal is intermittently supplied. Therefore, an increase in power consumption in the switch body can be suppressed, and power can be supplied to the wireless reception unit without reducing the power supplied to the load. In addition, while adding the function of receiving wireless signals to the switch body, the power consumption in the switch body is small, so that the load operates even when a current flows through the series circuit of the power supply and the load when the switch element is off. A large current does not flow through the switch element, and malfunction of the load when the switch element is off can be prevented. In addition, while the transmission signal of a predetermined plurality of frames is repeatedly transmitted intermittently by one operation of the transmitter, the pause period of the wireless reception unit is longer than the transmission interval of the transmission signal, and the transmitter The wireless signal from the transmitter in at least one reception waiting period is set so that a plurality of reception waiting periods are included in a period in which transmission signals of a predetermined plurality of frames are generated by one operation of Can be received. That is, as described above, it is possible to receive a wireless signal from the transmitter while suppressing an increase in power consumption in the wireless receiving unit. In addition, when the entire wireless signal cannot be received in the reception standby period in which the header is received, the reception standby period is forcibly terminated, so that an increase in power consumption in the switch body can be suppressed.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the transmitter constitutes a data block comprising a plurality of defined wireless signals having the same contents and a constant transmission interval. The time interval between adjacent data blocks of a plurality of data blocks is different from the transmission interval of wireless signals.

According to this configuration, the data block consisting of a plurality of defined wireless signals is used as a unit, and the time interval between the plurality of data blocks is different from the transmission interval of the wireless signal in the data block. Even if there is no wireless signal received in the reception waiting period of the switch body in one data block, there is a high possibility that the wireless signal is received in the reception waiting period in the other data blocks.
According to a fifth aspect of the invention, in the fourth aspect of the invention, the transmitter changes the time interval of the data block irregularly.
According to this configuration, by changing the time interval between the data blocks, it is possible to further increase the possibility that the wireless signal is received in the reception standby period. In addition, even when wireless signals are transmitted from a plurality of transmitters, a period in which the wireless signals do not overlap occurs, so that it is possible to operate the switch body while avoiding wireless signal interference.

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the control circuit unit receives a wireless signal from the transmitter and turns on / off the switch element provided in the load switching unit. In addition to the operation mode that controls the transmission mode, it has a measurement mode that measures the transmission interval of the same wireless signal transmitted from the transmitter. In the measurement mode, a plurality of wireless signals specified by the transmitter are transmitted. Is characterized in that power is continuously supplied from the power supply circuit unit to the wireless receiving unit to continuously receive wireless signals.

  According to this configuration, since the transmission time and the transmission interval of the wireless signal from the transmitter are detected in the switch body, the reception standby period and the pause period can be automatically set to match the transmitter, Adjustment of the instrument and the switch body is not necessary.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, the wireless signal is transmitted in a UWB system.

  According to this configuration, the transmitter does not require a modulation circuit or an amplifier circuit, the circuit chip area is reduced, and power consumption is reduced.

According to the configuration of the present invention, it is possible to connect to a series circuit of a power source and a load with two wires. In addition, since power is intermittently supplied to the wireless receiver provided to receive the wireless signal and control the on / off of the switch element in the load switching part, the power consumption in the switch body compared to continuous power supply Can be suppressed. As a result, there is an advantage that power can be supplied to the wireless reception unit without reducing the power supplied to the load. In addition, since the power consumption in the switch body is small while adding the function to receive the wireless signal to the switch body, a current that is large enough to operate the load is applied to the series circuit of the power source and the load when the switch element is off. It has the advantage of not flowing. In addition, while the transmission signal of a predetermined plurality of frames is repeatedly transmitted intermittently by one operation of the transmitter, the pause period of the wireless reception unit is longer than the transmission interval of the transmission signal, and the transmitter The wireless signal from the transmitter in at least one reception waiting period is set so that a plurality of reception waiting periods are included in a period in which transmission signals of a predetermined plurality of frames are generated by one operation of Can be received. That is, as described above, it is possible to receive a wireless signal from the transmitter while suppressing an increase in power consumption in the wireless receiving unit.

(Embodiment 1)
As shown in FIG. 1, the electronic switch according to the present embodiment includes a switch body 1 that receives a wireless signal and a transmitter 2 that transmits the wireless signal.

  Similar to the conventional configuration, the switch body 1 includes a load switching unit 11 including a switching element (not shown) inserted in a series circuit of a power source AC and a load Ld, and the switching element provided in the load switching unit 11 Is turned on / off by a control signal output from the control circuit unit 10. The power source AC is, for example, a commercial power source, and here it is assumed to be an AC power source. The switch element in the load switching unit 11 is connected between the two connection terminals X1 and X2, and by connecting the connection terminals X1 and X2 to one end of the series circuit of the power source AC and the load Ld, respectively. The power supply to the load Ld is turned on / off according to the on / off of the switch element.

  A power supply circuit unit 12 is connected to both ends of the load switching unit 11 (between the T2 terminal and the gate terminal of the switch element as in the conventional configuration). The configuration of the power supply circuit unit 12 is the same as the conventional configuration, and a constant voltage is generated from the voltage across the load switching unit 11 during the on period and the off period of the switch element. Therefore, a constant voltage is supplied to the control circuit unit 10 from the power supply circuit unit 12. In FIG. 1, a solid line indicates a power supply line, and a broken line indicates a control line.

  By the way, in this embodiment, the wireless receiver 13 is provided in the switch body 1, and power is also supplied to the wireless receiver 13 from the power supply circuit unit 12. As a transmission medium for the wireless signal received by the wireless receiving unit 13, it is possible to use light such as infrared rays, but in this embodiment, radio waves are used. In general, when a radio wave is used as compared with the case where light is used as a transmission medium, the power consumed during reception standby is larger. Therefore, in this embodiment, an increase in power consumption is suppressed by operating the wireless reception unit 13 intermittently.

  Specifically, the microcomputer constituting the control circuit unit 10 controls the operation of the wireless receiving unit 13, and as shown in FIG. 2A, the wireless receiving unit 13 can receive a wireless signal. The reception standby period T1 and the idle period T2 in which the supply of power from the power supply circuit unit 12 is not received without receiving a wireless signal are alternately repeated. The reception waiting period T1 and the suspension period T2 are each fixed time, and the suspension period T2 is set longer than the reception waiting period T1. That is, the supply of power from the power supply circuit unit 12 to the wireless reception unit 13 is performed intermittently. In addition, when the wireless reception unit 13 receives a wireless signal through the reception antenna 14 in the reception standby period T1, the wireless reception unit 13 outputs the reception signal, gives the reception signal to the control circuit unit 10, and the control circuit unit 10 loads according to the content of the reception signal. An on / off instruction is given to the opening / closing part 11.

  On the other hand, the transmitter 2 that transmits a wireless signal has a battery B as a power source and includes a push button switch Sa that is pressed as a switch, and transmits the wireless signal every time the push button switch Sa is pressed. The wireless signal has a content for instructing whether the load opening / closing unit 11 is on or off, and whether to instruct on or off is alternately selected every time the push button switch Sa is pressed. Specifically, the push button switch Sa is connected to a transmission control circuit unit 20 composed of a microcomputer, and the transmission control circuit unit 20 instructs the operation of the load opening / closing unit 11 every time the push button switch Sa is pressed. A content transmission signal ST is generated.

  In the transmission signal ST, the instruction content to turn on or off the load switching unit 11 is switched alternately every time the push button switch Sa is pressed. In the transmission control circuit unit 20, as shown in FIG. 2B, when the pushbutton switch Sa is pressed once, the transmission signal ST having the same content is repeatedly generated a plurality of times. That is, one frame of the transmission signal ST includes on / off instruction content of the load switching unit 11, and the transmission control circuit unit 20 intermittently generates transmission signals ST of the same content. The transmission time T3 occupied by one frame of the transmission signal ST is a fixed time, and the transmission interval T4 that is the time between adjacent transmission signals ST may be a fixed time, but as shown in FIG. The transmission interval T4 may be changed irregularly. The period for generating the transmission signal ST is set to be a time including a plurality of reception waiting periods T1 in the wireless reception unit 13.

  Here, the wireless signal will be described in more detail. As shown in FIG. 3A, the transmission control circuit unit 20 of the transmitter 2 intermittently generates a plurality of frames of transmission signals ST having the same contents by a single pressing operation of the pushbutton switch Sa. In the example shown in FIG. 3, a transmission signal ST of 17 frames is generated by a single pressing operation of the pushbutton switch Sa (17 transmission signals ST are shown). Although the number of frames of the transmission signal ST generated by a single pressing operation of the pushbutton switch Sa can be selected as appropriate, the number of frames is set to 17 in this embodiment. In the other figures, the number of frames is less than 17, but for the convenience of illustration, there is no intention to specify the number of frames.

  Each frame is a 64-bit (8-byte) pulse train composed of a header HD and a control message TX as shown in FIG. 3B. The header HD is used for frame synchronization as shown in FIG. The preamble PA and a synchronization code SC for bit synchronization. Further, the control message TX includes data instructing on / off of the load switching unit 11 and an error detection code CS for detecting a transmission error. In FIG. 3C, TD is information on the transmission time T3 and the transmission interval T4 of the transmission signal ST, but is unnecessary in the present embodiment and is not necessary. UW is a unique word for identifying a frame, and CD is information on an instruction content for the load switching unit 11.

  The transmitter 2 is provided with a wireless transmission unit 21 that receives the transmission signal ST output from the transmission control circuit unit 20 and transmits a wireless signal. Since the transmission signal ST is composed of a pulse train, the wireless transmission unit 21 converts the transmission signal ST into a UWB (Ultra Wide Band) pulse train and transmits it as a radio wave through the transmission antenna 22. UWB transmits pulses with a spectrum that occupies a bandwidth that exceeds 20% of the center frequency or occupies a bandwidth of 500 MHz or more (in the United States, a bandwidth of 3.1 to 10.6 GHz is reduced to a bandwidth of 528 MHz). The transmission power is divided into 14 subbands, and the transmission power is set to -41 dBm / MHz, which is limited to short-range communication). In this embodiment, since the wireless transmission unit 21 corresponds to UWB, the transmission power is not compared with the case of transmitting a wireless signal of another method using a radio wave as a transmission medium without requiring a modulation circuit or an amplification circuit. Is equal, power consumption in the circuit can be reduced, and the chip area can be reduced.

  As described above, when the pushbutton switch Sa provided in the transmitter 2 is pressed once, the transmitter 2 generates a transmission signal ST of a plurality of frames having the same contents, and repeats the wireless signal having the same contents a plurality of times. Send. On the other hand, the wireless reception unit 13 of the switch body 1 is provided with the reception standby period T1 intermittently, and the period during which the transmitter 2 generates the transmission signal ST is set to include a plurality of reception standby periods T1. Therefore, the wireless signal from the transmitter 2 can be received in at least one reception waiting period T1. Here, it goes without saying that one reception standby period T1 is set longer than the time of one frame of the transmission signal ST. When the switch body 1 receives the wireless signal, the switch body 1 controls the on / off of the load opening / closing unit 11 according to the content of the wireless signal.

  Further, in the control circuit unit 10, when the transmitter 2 receives the wireless signal in any one of the reception standby periods T1 after a slightly longer time than the transmitter 2 repeatedly generating the wireless signal having the same content, Even if a wireless signal is received at, it is assumed that the wireless signal has the same content, and the content of the wireless signal is invalidated. Therefore, only one portion of the wireless signal that is repeatedly transmitted a plurality of times in response to one pressing operation of the pushbutton switch Sa in the transmitter 2 is effectively used in the switch body 1.

  Similarly, in the transmitter 2, after the switch Sa is pressed once, a dead time is provided until the next time the switch Sa is made valid, and even if the switch Sa is pushed during the dead time. A transmission signal is not generated.

  A guideline for the above-described operation time is shown. It is assumed that the speed at which a wireless signal is transmitted from the transmitter 2 to the switch body 1 is 100 kbps. When the time of one frame of the transmission signal ST, that is, the transmission time T3 is set to 1.0 ± 0.1 (ms) and the transmission interval T4 is set to 1.0 ± 0.1 (ms), the push button switch Sa is operated once. The time required for transmitting the wireless signal corresponding to the transmission signal ST of 17 frames in response to the pressing operation is 17 × T3 + 16 × T4, which is about 33 ms.

  On the other hand, in the switch body 1, one reception standby period T1 is set to 3 ± 0.1 (ms), the pause period is set to 18 ms, and further, the power is supplied to the wireless reception unit 13 before the reception standby period T1. A warm-up period of 3 ms for starting the operation is provided. The warm-up period is provided as a period from the start of power supply to the wireless reception unit 13 until the operation is stabilized. Specifically, the wireless reception unit 13 is provided with an oscillation circuit having an oscillator for generating a clock signal, and the time from when power supply to the oscillation circuit is started until the frequency drift of the clock signal is settled. Provide a warm-up period. The dead period in the control circuit unit 10 is set to 50 ms, for example, and the dead period in the transmission control circuit 20 is set to 100 ms, for example. In addition, these numerical values are examples for giving a guideline, and needless to say, they are set appropriately.

  By the way, in the configuration example described above, the configuration including the push button switch Sa that is manually operated as a switch in the transmitter 2 is illustrated. However, as shown in FIG. 4, a sensor Sb that detects a change in the surrounding state is used instead of the push button switch Sa. It may be used. Various sensors can be used as the sensor Sa. For example, a human sensor that generates a binary output (contact output) according to the presence or absence of a person by detecting heat rays radiated from a human body, ambient brightness It is possible to use a brightness sensor or the like that detects the height and generates a binary output (contact output) corresponding to the magnitude relationship with the reference value. By using such a sensor Sb, for example, when a person is detected by the sensor Sb, the load Ld is turned on, and when no person is detected, the load Ld is turned off, thereby preventing unnecessary power consumption. When the surroundings become dark, the illumination load can be turned on automatically.

(Embodiment 2)
In the first embodiment, a reception waiting period T1 is intermittently provided at a constant time interval in the switch body 1, and a plurality of transmission signals ST having the same content are provided at a constant transmission interval T4 or an irregular transmission interval T4 in the transmitter 2. An example of adopting the configuration of transmitting twice is shown. On the other hand, in this embodiment, as shown in FIG. 5, the transmission signal ST is transmitted from the transmitter 2 at a constant transmission interval T4, and a prescribed number (six in the illustrated example) of transmission signals ST is 1 A group of data blocks Db is configured to transmit a plurality of data blocks Db, and the time interval T5 between adjacent data blocks Db is different from the transmission interval T4.

  In the illustrated example, a time T6 from the rising edge of the first transmission signal ST to the falling edge of the last transmission signal ST in one data block Db is expressed as a pause period T2 (in this embodiment, between adjacent reception waiting periods T1). Longer than the reception standby period T1) and shorter than the total time of the reception standby period T1 and the suspension period T2. That is, T2 <T6 <T1 + T2. The transmission interval T4 of the transmission signal ST is set longer than the reception standby period T1. Due to this relationship, a plurality of wireless signals are not received in one reception standby period T1, and the second wireless signal is invalidated when the wireless signal is received twice in one reception standby period T1. No processing is required. Furthermore, the time interval T5 between adjacent data blocks Db is set shorter than the transmission interval T4 between the transmission signals ST.

  Since the transmission interval T4 for generating the transmission signal ST is set to be longer than the reception standby period T1 as described above, the power consumption can be reduced by reducing the frequency of occurrence of the transmission signal ST in the transmitter 2. Moreover, although the transmission interval T4 for transmitting the transmission signal ST is longer than the reception waiting period T1, the time interval T5 between the data blocks Db is different from the transmission interval T4 for generating the transmission signal ST. The probability that any transmission signal ST of the plurality of data blocks Db can be generated in the reception standby period T1 is increased.

  In the configuration of the present embodiment, if the conditions are set appropriately, one of the transmission signals ST is transmitted during the reception waiting period T1 in two data blocks Db while reducing the power consumption in the transmitter 2. This makes it possible to cause the switch body 1 to reliably receive a wireless signal while relatively reducing the number of times that the transmission signal ST having the same content is generated. The conditions are not particularly described, but can be mathematically determined using the reception standby period T1, the pause period T2, the transmission time T3, the transmission interval T4, the time interval T5, and the number of transmission signals ST in the data block Db. By adopting this configuration, it is possible to relatively reduce the number of occurrences of the transmission signal ST, and as a result, it is possible to receive a wireless signal in the reception standby period T1 of a relatively small number (for example, three times). Become. That is, the response time from the generation of the transmission signal ST at the transmitter 2 to the control of the load Ld at the switch body 1 can be shortened. Other configurations and operations are the same as those in the first embodiment. The time interval T5 between the adjacent data blocks Db may not be constant, and the time interval T5 may be changed irregularly.

(Embodiment 3)
In each of the above-described embodiments, if the switch body 1 does not receive the entire wireless signal corresponding to the transmission signal ST during the reception standby period T1, the instruction content by the transmission signal ST can be given to the load switching unit 11. It was a configuration that could not be done. Therefore, in the present embodiment, the control circuit unit 10 adjusts the reception standby period T1 when the header HD (preamble PA and synchronization code SC) of the frame extracted from the wireless signal received by the wireless reception unit 13 is detected. Is adopted.

  The reception standby period T1 is determined in consideration of the remaining time of the reception standby period T1 from the time when the header HD of the frame is received and the time required to receive one frame. That is, as shown in FIG. 6, the time required to receive one frame is the transmission time T3, of which the time required to receive the header HD is T31 and the remaining time is T32. That is, T3 = T31 + T32. It is assumed that the header HD is received when t1 has elapsed from the start of the reception waiting period T1. Since the header HD is detected after t1 + T31 has elapsed since the start of the reception waiting period T1, if T1- (t1 + T31) is shorter than T32, the wireless signal is received within the reception waiting period T1. I can't. Therefore, when T1− (t1 + T31) <T32, the reception standby period T1 is extended by a time T1 ′ corresponding to the difference between the right side and the left side. That is, the time extension of T1 ′ = t1 + T3−T1 is performed. Since this time T1 'is the minimum time, it is desirable to allow a slight margin when extending the reception standby period T1.

  According to the configuration of the present embodiment, if the frame header HD is detected in the reception standby period T1, the length of the reception standby period T1 can be adjusted to receive the control message TX of the wireless signal. Therefore, it is not necessary to wait for the reception waiting period T1 in which the entire signal can be received, and the probability that the switch body 1 can receive the wireless signal can be further increased. Other configurations and operations are the same as those of the above-described embodiments.

  By the way, in this embodiment, the reception standby period T1 may be extended. When the reception standby period T1 is extended, the power consumption in the switch body 1 is increased as compared with the case where the reception standby period T1 is not extended. Therefore, the control circuit unit 10 monitors the output voltage of the power supply circuit unit 12 during the reception standby period T1, and determines whether or not the output voltage of the power supply circuit unit 12 is maintained at or above the specified operation guarantee voltage. Monitoring means are provided. The operation guarantee voltage is a voltage that can guarantee that the wireless reception unit 13 receives the wireless signal and inputs the reception signal to the control circuit unit 10, and is higher than the voltage that guarantees the operation of the control circuit unit 10. Is set.

  The output capacity of the power supply circuit unit 12 of the switch body 1 is normally designed to a minimum level that guarantees the operation of the control circuit unit 10 and the wireless reception unit 13 so that the power supplied to the load Ld does not decrease. In the reception standby period T1, the output voltage of the power supply circuit unit 12 gradually decreases. Here, the power supply circuit unit 12 is designed so that the output voltage becomes equal to or higher than the operation guarantee voltage for the normal reception standby period T1, but is designed to ensure that the reception standby period T1 is extended. Absent. If the design is changed, it is possible to secure an output capacity that guarantees the extension of the reception standby period T1, but if the output capacity is increased, the power supplied to the load Ld decreases. Therefore, the limit for extending the reception standby period T1 is set to a period during which the output voltage of the power supply circuit unit 12 is maintained to be equal to or higher than the operation guarantee voltage. T1 is cut off.

  By adopting this configuration, it is possible to receive a wireless signal in as few reception standby periods T1 as possible without changing the design of the power supply circuit unit 12, and the response time of the switch body 1 can be shortened. it can.

(Embodiment 4)
In the third embodiment, the reception probability of the wireless signal is increased by adopting a configuration that allows the reception standby period T1 to be extended. However, in the present embodiment, the length of the pause period T2 can be adjusted. By adopting the configuration, the reception probability is increased. That is, as in the third embodiment, when the frame header HD is detected in the reception standby period T1, the control circuit unit 10 determines whether or not the entire wireless signal can be received in the reception standby period T1. Here, if reception is possible, the signal is received as it is, but if it is determined that the wireless signal cannot be received within the reception waiting period T1, the reception waiting period T1 is not extended, as shown in FIG. The length of the pause period T2 until the next reception waiting period T1 is adjusted by the time T2 ′ so that the entire wireless signal can be received in the next reception waiting period T1. Here, since the transmission time T3 and the transmission interval T4 when the transmitter 2 transmits the wireless signal are known, this known information is used to determine the time T2 ′ for adjusting the length of the pause period T2. In the illustrated example, the suspension period T2 is shortened, but in some cases, the suspension period T2 is extended.

  In the present embodiment, when the frame header HD is detected in the reception standby period T1 and the entire wireless signal cannot be received in the reception standby period T1, the length of the pause period T2 is adjusted and the next reception is performed. Since the wireless signal is received in the standby period T1, if the next reception standby period T1 can be set while the wireless signal is repeatedly transmitted from the transmitter 2, the wireless signal is surely received in the next reception standby period T1. Can be received. This embodiment is applied in principle when the transmission interval T4 for generating the transmission signal ST is constant. This is because if the transmission interval T4 for generating the transmission signal ST is irregular, the length of the pause period T2 cannot be determined.

  By the way, the transmission interval T4 at which the wireless signal is generated from the transmitter 2 varies, and the switch body 1 cannot determine the pause period T2 unless the transmission interval T4 is known as described above. Therefore, it is desirable to measure the transmission interval T4 at which the wireless signal is transmitted from the transmitter 2 in the switch body 1.

  In order to measure the transmission time T3 and the transmission interval T4 in the switch body 1, a measurement mode is provided as an operation mode of the switch body 1. In a normal operation, an operation of intermittently providing a reception standby period T1 for receiving the wireless reception unit 13 is performed, but in the measurement mode, the wireless reception unit 13 is continuously received. The measurement mode is selected by switching with an appropriate operation unit for mode switching, or the switch body 1 is connected to the series circuit of the power source AC and the load Ld, and a fixed time is measured after the start of power supply. And Here, when the wireless signal constitutes the data block Db as in the second embodiment, the time interval T5 between the adjacent data blocks Db is also measured.

  As described above, if a measurement mode is provided in the switch body 1 and the transmission time T3 during which the wireless signal is transmitted and the transmission interval T4 or the time interval T5 of the data block Db as required is also measured, the reception waiting period T1. In addition, the length of the suspension period T2 can be automatically set to an appropriate length. That is, the switch body 1 can automatically perform settings for intermittently receiving wireless signals without requiring any adjustment. Other configurations and operations are the same as those of the above-described embodiments.

(Embodiment 5)
In the third embodiment, when the frame header HD is detected in the reception standby period T1, the reception standby period T1 can be extended as necessary. However, in the present embodiment, the reception standby period T1 can be shortened. Is. That is, in the present embodiment, when the frame header HD is detected in the reception standby period T1, the reception standby period T1 is calculated using the relationship between the remaining time of the reception standby period T1 and the time required for reception of the wireless signal. To determine whether or not the entire wireless signal can be received. If the wireless signal cannot be received, as shown in FIG. 8, it is received at the time of determination (time T1 ″ before the normal end of the reception waiting time T1). A configuration is adopted in which the standby period T1 ends and the period shifts to the suspension period T2. That is, the reception standby period T1 is shortened by a time T1 ″. Of course, when the entire wireless signal can be received in the reception standby period T1, the reception standby period T1 is not shortened or extended.

  Accordingly, when the control circuit unit 10 determines that the entire wireless signal cannot be received in the reception standby period T1 in which the header HD is detected, the control circuit unit 10 ends the reception standby period T1 and stops receiving the wireless signal. By this operation, the suspension period T2 is extended by a reduction of the reception standby period T1, and power consumption in the switch body 1 is suppressed. Other configurations and operations are the same as those in the first embodiment, and the probability that the switch body 1 can receive the wireless signal from the transmitter 2 is the same as that in the first embodiment.

(Embodiment 6)
In the present embodiment, at the beginning of the control message TX in the transmission signal ST, the transmission time T3, the transmission interval T4, and the frame number (the frame number of the transmission signal ST generated by one pressing operation of the pushbutton switch Sa) When the header HD is successfully read in the reception waiting period T1, the information is also tried to be read. Note that a CRC code is added to the end of these pieces of information. If these pieces of information can be read, the pause period T2 until the next reception waiting period T1 is adjusted using these pieces of information, and the wireless signal is read during the next reception waiting period T1. With this operation, the wireless signal can be reliably read in the next reception waiting period T1, and the response time of the switch body 1 can be shortened with respect to the operation of the push button switch Sa in the transmitter 2.

  Even if the header HD can be read during the reception standby period T1, the transmission time T3, the transmission interval T4, and the frame number may not be read within the remaining time of the reception standby period T1. In such a case, the technique of each embodiment mentioned above is employ | adopted. In this embodiment, information on the transmission time T3, transmission interval T4, and frame number is set at the head of the control message TX. The header HD is detected in the reception waiting period T1 by including these information in the header HD. When this is done, these pieces of information may also be read. Other configurations and operations are the same as those of the above-described embodiments.

  In each of the embodiments described above, the body of the switch body 1 is a body that can be attached to a mounting frame for an embedded wiring apparatus that is standardized as a large-angle continuous form in the JIS standard, and is not standardized. In either case, either a vessel that can be attached to a ready-made attachment frame that can be shared by various wiring devices, or a vessel that is integrally provided with this type of attachment frame and a frame that has the same attachment dimensions are used. By using this type of body, it can be replaced with an existing wall switch attached to a construction surface such as a wall and attached to the construction surface, and can be used in place of the existing wall switch. Since the switch body 1 is controlled using a wireless signal, it is possible to control a plurality of switch bodies 1 at the same time with a single transmitter 2.

It is a block diagram which shows embodiment of this invention. FIG. 3 is an operation explanatory diagram of the first embodiment. It is operation | movement explanatory drawing same as the above. It is a block diagram which shows the other structural example of the transmitter used for the same as the above. FIG. 9 is an operation explanatory diagram of the second embodiment. FIG. 9 is an operation explanatory diagram of Embodiment 3. FIG. 10 is an operation explanatory diagram of the fourth embodiment. FIG. 10 is an operation explanatory diagram of the fifth embodiment. It is a circuit diagram which shows a conventional structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch main body 2 Transmitter 10 Control circuit part 11 Load switching part 12 Power supply circuit part 13 Wireless receiving part AC power supply Ld Load SW Switch element X1, X2 Connection terminal

Claims (7)

Supplied from a connection terminal having a pair of connection terminals for connecting a series circuit of a power source and a load and having a switching element inserted between the connection terminals, a control circuit unit for controlling on / off of the switching element A power circuit unit that generates an internal power source that can operate the control circuit unit using electric power, and a transmission signal of a plurality of predetermined frames having the same contents are repeatedly transmitted intermittently from the transmitter in one transmission of the transmitter. A wireless receiving unit that receives a wireless signal and controls the control circuit unit to turn on and off the switch element according to the instruction content of the wireless signal, and the control circuit unit supplies power from the power supply circuit unit to the wireless receiving unit. The wireless standby signal reception period during which wireless signals can be received and the wireless signal by stopping the power supply from the power supply circuit unit to the wireless reception unit The reception idle period is alternately repeated, the reception standby period is longer than the transmission time occupied by one frame of the transmission signal, the pause period is longer than the transmission interval of the transmission signal, and the transmitter Are set so that a plurality of reception waiting periods are included in a period in which a transmission signal of a predetermined plurality of frames is generated by one operation of the wireless signal, and the wireless signal sequentially includes a synchronization header and a control message. The control circuit unit includes a voltage monitoring unit that determines whether the output voltage of the power supply circuit unit is equal to or higher than an operation guarantee voltage that guarantees an operation of the wireless reception unit, and receives a header. When the control message is received in the remaining time of the reception waiting period when the operation is completed, and when the control message cannot be received, the period when the voltage monitoring means determines that the operation guarantee voltage is exceeded Wireless wiring device, characterized in that to extend the listening period within. Supplied from a connection terminal having a pair of connection terminals for connecting a series circuit of a power source and a load and having a switching element inserted between the connection terminals, a control circuit unit for controlling on / off of the switching element A power circuit unit that generates an internal power source that can operate the control circuit unit using electric power, and a transmission signal of a plurality of predetermined frames having the same contents are repeatedly transmitted intermittently from the transmitter in one transmission of the transmitter. A wireless receiving unit that receives a wireless signal and controls the control circuit unit to turn on and off the switch element according to the instruction content of the wireless signal, and the control circuit unit supplies power from the power supply circuit unit to the wireless receiving unit. The wireless standby signal reception period during which wireless signals can be received and the wireless signal by stopping the power supply from the power supply circuit unit to the wireless reception unit The reception idle period is alternately repeated, the reception standby period is longer than the transmission time occupied by one frame of the transmission signal, the pause period is longer than the transmission interval of the transmission signal, and the transmitter Are set so that a plurality of reception waiting periods are included in a period in which a transmission signal of a predetermined plurality of frames is generated by one operation of the wireless signal, and the wireless signal sequentially includes a synchronization header and a control message. The control circuit unit determines whether or not the control message can be received in the remaining time of the reception waiting period when reception of the header is completed, and when the control message cannot be received, the control circuit unit performs wireless communication in the next reception waiting period. features and to Ruwa Iyaresu wiring device to adjust the rest period to be able to receive signals. Supplied from a connection terminal having a pair of connection terminals for connecting a series circuit of a power source and a load and having a switching element inserted between the connection terminals, a control circuit unit for controlling on / off of the switching element A power circuit unit that generates an internal power source that can operate the control circuit unit using electric power, and a transmission signal of a plurality of predetermined frames having the same contents are repeatedly transmitted intermittently from the transmitter in one transmission of the transmitter. A wireless receiving unit that receives a wireless signal and controls the control circuit unit to turn on and off the switch element according to the instruction content of the wireless signal, and the control circuit unit supplies power from the power supply circuit unit to the wireless receiving unit. The wireless standby signal reception period during which wireless signals can be received and the wireless signal by stopping the power supply from the power supply circuit unit to the wireless reception unit The reception idle period is alternately repeated, the reception standby period is longer than the transmission time occupied by one frame of the transmission signal, the pause period is longer than the transmission interval of the transmission signal, and the transmitter Are set so that a plurality of reception waiting periods are included in a period in which a transmission signal of a predetermined plurality of frames is generated by one operation of the wireless signal, and the wireless signal sequentially includes a synchronization header and a control message. The control circuit unit determines whether the control message can be received in the remaining time of the reception waiting period when reception of the header is completed, and ends the reception waiting period when the control message cannot be received. features and to Ruwa Iyaresu wiring device that. The transmitter constitutes a data block composed of a plurality of defined wireless signals having the same contents and a constant transmission interval, and the time interval between adjacent data blocks for the plurality of data blocks is set as a wireless signal transmission interval. The wireless wiring device according to claim 1, wherein the wireless wiring device is different from the wireless wiring device according to claim 1. The wireless wiring device according to claim 4, wherein the transmitter irregularly changes the time interval of the data block . The control circuit unit receives a wireless signal from the transmitter and controls an on / off state of the switch element provided in the load opening / closing unit, as well as a wireless signal of the same content transmitted from the transmitter. A measurement mode for measuring a transmission interval, and in the measurement mode, a wireless signal is supplied by continuously supplying power from the power supply circuit unit to the wireless reception unit while a plurality of wireless signals defined by the transmitter are transmitted. The wireless wiring device according to claim 1 , wherein the wireless wiring device is received continuously . It said wireless signal wireless wiring fixtures according to any one of claims 1 to 6, characterized in that it is transmitted by the UWB system.

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