TW201735537A - Electronic switch device and electronic switch system - Google Patents

Abstract

Provided is an electronic switch device that can perform control that does not readily compete with the control performed by other electronic switch devices. Also provided is an electronic switch system. An electronic switch device (1) that comprises a switch part (Q1), a control part (5), a voltage monitoring part (32), and a determination part (53). The switch part (Q1) is electrically connected between an alternating current power source (11) and a load (12) and switches the state of conduction/non-conduction between the alternating current power source and the load. The control part (5) controls the switch part (Q1). The voltage monitoring part (32) monitors the size of an intra-switch voltage (Vsw) that is the voltage between the ends of the switch part (Q1). On the basis of monitoring results from the voltage monitoring part (32), the determination part (53) determines the operation state of another switch part that is a switch part (Q1) of another electronic switch device and is electrically connected between the alternating current power source and the load.

Description

Electronic switch device and electronic switch system

The present invention relates generally to an electronic switching device and an electronic switching system, and more particularly to an electronic switching device and an electronic switching system including a switching portion electrically connected between an alternating current power source and a load.

In the past, an electronic switch device (with an infrared sensor automatic switch) for detecting the infrared rays emitted from the human body and detecting the opening/closing of the load has been known (for example, refer to Patent Document 1 [Japanese Laid-Open Patent Publication No. 2000-131456] ). The electronic switch device disclosed in Patent Document 1 is a single-winding, full-wave rectifier of a current converter, and a load control circuit having a bidirectional thyristor for turning on/off the power supply to the load in parallel between the connection terminals. connection.

Further, in the electronic switch device disclosed in Patent Document 1, a power supply circuit is connected between DC output terminals of the full-wave rectifier. The power supply circuit supplies a power supply to a constant voltage circuit that generates a control power supply (actuating power supply) for a control IC (Integrated Circuit). Further, when the load is energized, the auxiliary power supply circuit supplies power to the constant voltage circuit by the current flowing to the secondary winding of the current converter.

Further, in an electronic switch system including a plurality of electronic switch devices, one load may be controlled by a plurality of electronic switch devices. At this time, it is desirable that the electronic switching device performs control that is not easily matched with the control of other electronic switching devices.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electronic switch device and an electronic switch system that can perform control that is less likely to compete with control of other electronic switch devices.

An electronic switch device according to an aspect of the present invention includes a switch unit, a control unit, a voltage monitoring unit, and a determination unit. The switch portion is electrically connected between the AC power source and the load, and switches between conduction and non-conduction between the AC power source and the load. The control unit controls the switch unit. The voltage monitoring unit monitors the voltage across the switch unit, that is, the voltage between the switches. The determination unit determines an operation state of another switch unit that is a switch unit of another electronic switch device that is electrically connected between the AC power source and the load, based on the monitoring result of the voltage monitoring unit.

An electronic switch system according to an aspect of the present invention includes a plurality of the above electronic switch devices. The plurality of switch units included in the plurality of electronic switch devices are electrically connected in parallel between the AC power source and the load.

(Embodiment 1) (1) The electronic switchgear 1A and 1B of the first embodiment are electrically connected between the AC power source 11 and the load 12 as shown in Fig. 2, and are switched from the AC power source 11 to the load. 12 wiring device in the energized state. The electronic switch devices 1A, 1B are mounted, for example, on a house wall or the like. The AC power source 11 is, for example, a commercial power source of single phase 100 [V], 60 [Hz]. The load 12 is, for example, an illumination device including a light source having an LED (Light Emitting Diode) and a lighting circuit that illuminates the light source. At this load 12, when power is supplied from the alternating current power source 11, the light source is turned on.

In the example shown in Fig. 2, the two electronic switching devices 1A and 1B constitute the electronic switch system 10. That is, the electronic switch system 10 includes a plurality of (here, two) electronic switching devices 1A and 1B. The two electronic switching devices 1A and 1B are configured to be common to each other. Hereinafter, when the two electronic switching devices 1A and 1B are not particularly distinguished, the two electronic switching devices 1A and 1B are referred to as "electronic switching device 1".

The electronic switch device 1 includes a switch unit Q1 composed of a semiconductor switch such as a bidirectional thyristor or a transistor. The electronic switching device 1 electronically switches between conduction and non-conduction between the AC power source 11 and the load 12 by electronically controlling the switch portion Q1. That is, the electronic switch device 1 includes a switch portion Q1 that is electrically connected between the AC power source 11 and the load 12.

In the present embodiment, the electronic switch device 1 is a so-called three-way switch that can connect three wires. The electronic switch device 1 includes three connection terminals (a first connection terminal, a second connection terminal, and a third connection terminal) 101, 102, and 103. Therefore, in the electronic switch system 10 in which the two electronic switch devices 1A and 1B are combined, the energization state of the load 12 can be switched, for example, at the upper portion of the stairs of the building and the two portions of the lower portion. In other words, when the electronic switch devices 1A and 1B are respectively provided in the upper portion and the lower portion of the stairs, even if any of the electronic switch devices 1A and 1B is operated, the power supply state can be switched to the load 12 provided on the stairs.

In the example of Fig. 2, the connection terminal 101 of the electronic switch device 1A (hereinafter also referred to as "the first electronic switch device 1A") is connected to the load 12. The connection terminal 101 of the electronic switch device 1B (hereinafter also referred to as "second electronic switch device 1B") is connected to the AC power supply 11. Moreover, the connection terminal 102 of the electronic switching device 1A is connected to the connection terminal 103 of the electronic switching device 1B. The connection terminal 103 of the electronic switching device 1A is connected to the connection terminal 102 of the electronic switching device 1B. In each of the electronic switching devices 1, the connection terminal 101 and the connection terminal 102 are connected inside the electronic switching device 1.

Further, in each of the electronic switching devices 1, the switch portion Q1 is connected between the connection terminal 101 and the connection terminal 103. In other words, in the electronic switch device 1, the connection terminal 101 and the connection terminal 103 are electrically connected via the switch portion Q1. Therefore, in each of the electronic switching devices 1, when the switch portion Q1 is turned on (turned on), the connection terminal 101, the connection terminal 102, and the connection terminal 103 are electrically connected via the switch portion Q1. Further, in each of the electronic switching devices 1, when the switch portion Q1 is in a non-conducting (closed) state, the connection terminal 101, the connection terminal 102, and the connection terminal 103 are rendered non-conductive. In other words, when the switch portion Q1 of the electronic switching device 1 is turned on, the AC power source 11 and the load 12 are turned on, and then the power is supplied from the AC power source 11 to the load 12 via the electronic switch device 1. In the present embodiment, the open state of the switch unit Q1 is not only a state in which the switch unit Q1 is continuously turned on, but also a state in which the switch unit Q1 is intermittently turned on. In other words, the open state of the switch unit Q1 refers to a state in which electric power is supplied from the AC power source 11 to the load 12, and the OFF state of the switch unit Q1 refers to a state in which the power supply from the AC power source 11 to the load 12 is blocked.

In other words, the plurality of switch units Q1 provided in the plurality (here, two) of the electronic switch devices 1A and 1B are electrically connected in parallel between the AC power source 11 and the load 12. Therefore, when the switch unit Q1 of any one of the two electronic switch devices 1A and 1B is turned on, the electronic switch system 10 is turned on between the AC power supply 11 and the load 12, and then is passed through the two electronic switch devices 1A and 1B. The AC power source 11 supplies power to the load 12. Therefore, in the electronic switch system 10, the energization state to the load 12 can be switched between the switch portion Q1 of the electronic switch device 1A and the switch portion Q1 of the electronic switch device 1B. (2) Details (2‧1) The overall structure of the electronic switchgear

Hereinafter, the configuration of the electronic switch device of the present embodiment will be described with reference to FIGS. 1 and 2 .

As shown in FIG. 2, the electronic switch device 1 includes a rectifier 2 and a circuit unit 3 in addition to the switch unit Q1 and the three connection terminals 101, 102, and 103. The switch portions Q1 and the three connection terminals 101, 102, and 103, the rectifier 2, and the circuit portion 3 are housed in one frame, and the frame is fixed to a wall or the like, whereby the electronic switch device 1 can be mounted on Walls, etc.

The switch unit Q1 is electrically connected between the AC power source 11 and the load 12, and switches between conduction and non-conduction between the AC power source 11 and the load 12. In the present embodiment, the switch unit Q1 is constituted by a three-terminal bidirectional thyristor (triode flow switch). The switch portion Q1 is electrically connected between the connection terminal 101 and the connection terminal 103, and switches the passage and interruption of the bidirectional current between the connection terminal 101 and the connection terminal 103. The control terminal (the gate terminal of the bidirectional thyristor) of the switch portion Q1 is electrically connected to the circuit portion 3. Thereby, the switch unit Q1 is controlled by the switch control unit 51 which will be described later. In the first diagram, the second diagram, and the like, the switch unit Q1 is denoted by the same circuit symbol as the mechanical switch having the contact.

The three connection terminals 101, 102, and 103 are all parts in which the wires are electrically and mechanically connected. The switch unit Q1 is connected between the first connection terminal 101 and the third connection terminal 103 as described above. The second connection terminal 102 is an internal extension type terminal of the first connection terminal 101 and is electrically connected to the first connection terminal 101.

The rectifier 2 is composed of a diode bridge. The rectifier 2 performs full-wave rectification of a voltage applied between both ends of the switch unit Q1 (hereinafter also referred to as "switching voltage Vsw"), and outputs it to the circuit unit 3. Therefore, the circuit portion 3 is connected between the DC output terminals of the rectifier 2. The circuit unit 3 uses the full-wave rectified electric power input from the rectifier 2 to generate, for example, a control voltage required for the control of the switch unit Q1 and the driving of the sensor unit 31.

Hereinafter, when the switch portions Q1 of any of the two electronic switch devices 1A and 1B are in a non-conducting state, it is assumed that the AC voltage Vac from the AC power source 11 is applied to the switch portion Q1. That is, if both of the electronic switching devices 1A and 1B are in the off state, the inter-switch voltage Vsw becomes equal to the AC voltage Vac from the AC power source 11. Further, the polarity of the AC voltage Vac is such that the direction of the arrow in FIG. 2 is positive.

Next, details of the circuit unit 3 will be described with reference to FIG. The circuit unit 3 includes a power generation block 4, a control unit 5, a sensor unit 31, and a voltage monitoring unit 32.

The power generation block 4 has two feed circuits (a first feed circuit 41 and a second feed circuit 42), a power supply unit 43, and a switching unit 44. The power supply unit 43 is electrically connected to both ends of the switch unit Q1, and generates a control voltage by electric power supplied from the alternating current power source 11. The first feed circuit 41 and the second feed circuit 42 are electrically connected in parallel between the switch unit Q1 and the power supply unit 43. Therefore, as a path for supplying electric power from the AC power supply 11 to the power supply unit 43, two paths including the path of the first feed circuit 41 and the path including the second feed circuit 42 are formed. The switching unit 44 is electrically connected between the switching unit Q1 and either of the two feeding circuits (the first feeding circuit 41 and the second feeding circuit). The switching unit 44 is configured to switch between the first feed circuit 41 and the second feed circuit 42 by using a feed circuit for supplying power from the AC power supply 11 to the power supply unit 43. In addition, the "switching feed circuit" means that the feed circuit used for the path for supplying electric power is electrically switched between the first feed circuit 41 and the second feed circuit 42, and is not limited to the first feed circuit 41 and the second feed circuit 42. Perform physical switching.

The first feed circuit 41 is composed of a low-impedance element having a relatively low impedance. The second feed circuit 42 is configured to include a high impedance element having a relatively high impedance. As an example of the low-impedance element, a load switch such as a PNP-type bipolar transistor is provided. The load-on relationship is electrically connected in series between the switching unit 44 and the power supply unit 43, and the impedance of the first feed circuit 41 is lowered by being turned on. In addition, the load switch is not limited to a configuration including a bipolar transistor, and may be configured to include a MOSFET (Metal Oxide Semiconductor Field Effect Transistor). As an example of the high-impedance element, there is a step-down circuit that steps down the input voltage (inter-switch voltage Vsw) and outputs it to the power supply unit 43.

The switching unit 44 is provided with, for example, a semiconductor switch such as a transistor, and is electrically connected between the power supply input terminal 401 and the first feed circuit 41. The power input terminal 401 is electrically connected to the DC output terminal of the positive pole of the rectifier 2. When the switching unit 44 is turned on, the first feeding circuit 41 is used to supply electric power to the power supply unit 43, and the switching unit 44 is turned off, and the second feeding circuit 42 is used to supply electric power to the power supply unit 43. . For example, if the low impedance element is a load switch having a bipolar transistor, if the switching portion 44 is turned on, the base current flows to the bipolar transistor of the load switch. The switching unit 44 is controlled by a switching control unit 52 which will be described later. The switching unit 44 switches between the first feeding circuit 41 and the second feeding circuit 42 in accordance with the switching control signal output from the switching control unit 52 and the feeding circuit used to supply the power to the power supply unit 43. In the first drawing, the switching unit 44 is denoted by the same circuit symbol as the mechanical switch having the contact.

The power supply unit 43 has a capacitor C1 and a regulator 45. The capacitor C1 is electrically connected between the output terminal of each of the first feed circuit 41 and the second feed circuit 42 and the ground (reference potential point). The regulator 45 is a three-terminal regulator (series regulator). The input terminal of the regulator 45 is electrically connected to the terminal of the high potential side of the capacitor C1, that is, the output terminal of each of the first feed circuit 41 and the second feed circuit 42. The regulator 45 converts the voltage across the capacitor C1 into a predetermined voltage and outputs it. The output terminal of the regulator 45 corresponds to the output terminal of the power supply unit 43, and is electrically connected to the power supply output terminal 402. The power output terminal 402 is electrically connected to the control unit 5.

That is, between the DC output terminals of the rectifier 2, the parallel circuit of the first feed circuit 41 and the second feed circuit 42 is electrically connected in series with the power supply unit 43. Between the power input terminal 401 and the ground (reference potential point), the full-wave rectified inter-switch voltage Vsw, that is, the pulse current voltage output from the rectifier 2 is applied. Thereby, the capacitor C1 is charged. The electric power supplied to the power supply unit 43 is supplied to the power supply unit 43 via any of the first feed circuit 41 and the second feed circuit 42 in accordance with the connection destination of the power supply input terminal 401 determined by the switching unit 44.

The "terminal" such as the "power input terminal" of the present embodiment may not be a component (terminal) for connecting an electric wire or the like, for example, a wire of an electronic component or a part of a conductor included in the circuit board.

The control unit 5 operates by receiving the supply of the control voltage from the power generation block 4. The control unit 5 includes a switching control unit 51 that controls the switch unit Q1 and a switching control unit 52 that controls the switching unit 44.

The switch control unit 51 outputs a switch control signal to the control terminal (the gate terminal of the bidirectional thyristor) of the switch unit Q1 in accordance with the detection result of the sensor unit 31. Thereby, the switch control unit 51 controls the switch unit Q1 such that the switching unit Q1 is turned on and off. Further, when the switch unit Q1 is turned on, the control unit 5 determines the timing at which the switch control signal is output based on the monitor signal output from the voltage monitor unit 32. The control unit 5 includes a drive circuit for driving the switch unit Q1, and the control unit 5 directly controls the switch unit Q1.

The switching control unit 52 outputs a switching control signal to the switching unit 44 based on the monitoring signal output from the voltage monitoring unit 32. Thereby, the switching control unit 52 controls the switching unit 44 such that the feed circuit used to supply the power to the power supply unit 43 switches between the first feed and the second feed circuit.

The control unit 5 is provided with, for example, a microcomputer as a main configuration. The microcomputer is realized as a function of the control unit 5 by executing a program stored in the memory of the microcomputer in a CPU (Central Processing Unit). The program can be stored in advance in a storage medium such as a memory or a memory card of a microcomputer, or can be provided via an electric communication line. In other words, the above program is a program for causing the microcomputer to function as the control unit 5.

The sensor section 31 detects whether or not a person is located in the detection area. The sensor portion 31 includes, for example, a pyroelectric element, and determines whether a person is in the detection area by detecting infrared rays emitted from the human body. When the sensor unit 31 detects that the person is in the detection area, the sensor unit 31 outputs an opening control instruction for turning the switch unit Q1 to the ON state to the switch control unit 51 of the control unit 5.

The voltage monitoring unit 32 is configured to monitor (detect) the voltage across the switch unit Q1, that is, the magnitude of the inter-switch voltage Vsw. In the present embodiment, the voltage monitoring unit 32 is electrically connected between the DC output terminals of the rectifier 2, and then monitors the magnitude of the inter-switch voltage Vsw after full-wave rectification. The voltage monitoring unit 32 compares the magnitude (absolute 値) of the inter-switch voltage Vsw with the reference 値, and outputs a monitor signal indicating the comparison result to the control unit 5. The reference 値 is a 设定 set near 0 [V], for example, the number [V]. The voltage monitoring unit 32 functions as a zero-cross detecting unit that detects the zero-crossing point [0V] of the AC voltage Vac, but the zero-crossing detection point is slightly delayed in time from the zero-crossing point [0V] of the AC voltage Vac. .

When receiving the opening control instruction from the sensor unit 31, the switch control unit 51 outputs a switching control signal to the switch unit Q1 in accordance with the monitoring signal from the voltage monitoring unit 32. Specifically, the switch control unit 51 turns on the switch unit Q1 when the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference value in accordance with the monitor signal from the voltage monitor unit 32. Since the switch unit Q1 is constituted by the two-way thyristor as described above, the switch control signal is turned on when it is input, and becomes non-conductive near the zero crossing point (0 [V]) of the AC voltage Vac from the AC power source 11. Strictly speaking, when the current flowing through the switch unit Q1 becomes 0 [A] after the switch unit Q1 is turned on, the switch unit Q1 is rendered non-conductive. Therefore, depending on the type of the load 12, there is a ratio of the AC voltage Vac. At the earlier point of the zero crossing point, the switch portion Q1 is rendered non-conductive. Therefore, the switch control unit 51 turns on the switch unit Q1 by outputting the switch control signal every half cycle of the AC voltage Vac. In other words, the state in which the switch unit Q1 is turned on is not only a state in which the switch unit Q1 is continuously turned on, but also a state in which the switch unit Q1 is intermittently turned on. Further, when the switch unit Q1 is turned off, the switch control unit 51 does not output the switch control signal to the switch unit Q1, thereby maintaining the switch unit Q1 non-conductive.

When the switch control unit 51 controls the switch unit Q1 to be in the off state, the switching control unit 52 outputs a switching control signal to the switching unit 44 based on the monitor signal from the voltage monitoring unit 32. Specifically, the switching control unit 52 compares the length of the inter-switch voltage Vsw to the length of the reference 値 or more (hereinafter referred to as "pulse width") and the threshold 依据 based on the monitor signal from the voltage monitoring unit 32. When the pulse width is less than the threshold 値, the switching control unit 52 outputs the switching control signal to the switching unit 44 so that the first feeding circuit 41 is used to supply the power to the power supply unit 43. In addition, when the pulse width is equal to or greater than the threshold ,, the switching control unit 52 outputs the switching control signal to the switching unit 44 so that the second feeding circuit 42 is used to supply power to the power supply unit 43. In other words, the switching control unit 52 sets the feed circuit used for the path for supplying power to the power supply unit 43 in the first feed circuit 41 and the second feed circuit 42 whether or not the pulse width of the inter-switch voltage Vsw is equal to or greater than the threshold 値. The switching unit 44 is controlled by the mode of switching. Further, in the present embodiment, the threshold 値 is set to about 1/8 of one cycle of the AC voltage Vac. Further, "1/8 of one cycle of the AC voltage Vac" is an example of the threshold ,, but is not limited to this number. The pulse width of the inter-switch voltage Vsw may be the length of the time when the voltage between the switches Vsw is less than the reference 値. At this time, when the pulse width is equal to or greater than the threshold 値, the switching control unit 52 outputs the switching control signal to the switching unit so that the first feeding circuit 41 is used to supply the power to the power supply unit 43. 44. In addition, when the pulse width is less than the threshold ,, the switching control unit 52 outputs the switching control signal to the switching unit 44 so that the second feeding circuit 42 is used to supply the power to the power supply unit 43.

When the switch control unit 51 controls the switch unit Q1 to be in the on state, the switching control unit 52 outputs a switching control signal to the switching unit 44 regardless of the monitor signal from the voltage monitoring unit 32. In other words, the switching control unit 52 outputs the switching control signal to the switching unit 44 so that the first feeding circuit 41 is used to supply power to the power supply unit 43 while the switching unit Q1 is in the ON state. (2‧2) Acting

Next, the operation of the electronic switch device 1 and the electronic switch system 10 will be described with reference to FIGS. 3 and 4 .

In the third diagram, the operation when the switch unit Q1 of both the first electronic switch device 1A and the second electronic switch device 1B is in the closed state is exemplified. In the fourth diagram, the operation of the switch unit Q1 of the first electronic switch device 1A is turned off, and the switch unit Q1 of the second electronic switch device 1B is turned on. In the third and fourth figures, the AC voltage "Vac", the inter-switch voltage "Vsw", the monitor signal "S1a" of the first electronic switching device 1A, and the monitoring signal "S1b" of the second electronic switch device 1B are sequentially shown from the upper stage. The state (on/off) of the switch unit Q1 of the second electronic switching device 1B. Regarding "Q1" indicating the state of the switch unit Q1, "ON" indicates conduction, and "OFF" indicates non-conduction. In the example of FIG. 3 and FIG. 4, when the signal level of the monitoring signals S1a and S1b is greater than or equal to the reference 値Vth1, the magnitude of the signal between the switches S1a and S1b is the L level, and the magnitude of the inter-switch voltage Vsw is When the reference 値Vth1 is not reached, it is the H level.

First, the operation of the switch unit Q1 of both the first electronic switch device 1A and the second electronic switch device 1B in the closed state will be described using FIG.

In the third diagram, the voltage across the switch portion Q1 of the first electronic switching device 1A is shown, but the voltage across the switch portion Q1 of the second electronic switching device 1B is also the same as the switching portion Q1 of the first electronic switching device 1A. The terminal voltages are approximately the same. Further, in Fig. 3, the time point t0 is a zero crossing point when the AC voltage Vac moves from the negative polarity to the positive polarity. At the time point t1, the magnitude of the inter-switch voltage Vsw exceeds the reference 値Vth1, and at the time t2, the magnitude of the inter-switch voltage Vsw is lower than the reference 値Vth1. The time point t3 is a zero crossing point when the AC voltage Vac moves from the positive polarity to the negative polarity. At the time point t4, the magnitude of the inter-switch voltage Vsw exceeds the reference 値Vth1, and at the time point t5, the magnitude of the inter-switch voltage Vsw is lower than the reference 値Vth1.

In this state, since the switch portions Q1 of both the first electronic switch device 1A and the second electronic switch device 1B are in the off state, the voltage Vsw between the switches is exchanged with any of the two electronic switch devices 1A and 1B. The voltage Vac is the same voltage. Therefore, in almost all of the one cycle of the AC voltage Vac, that is, the period from the time point t1 to the time point t2 and the period from the time point t4 to the time point t5, the magnitude of the inter-switch voltage Vsw exceeds the reference 値Vth1. Thereby, the length (pulse width) of the period in which the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference 値Vth1 is equal to or greater than the threshold 値. Therefore, the second feed circuit 42 is used for supplying power to the power supply unit 43 for any of the two electronic switch devices 1A and 1B.

Next, the operation of the switch unit Q1 of the first electronic switch device 1A in the closed state and the switch unit Q1 of the second electronic switch device 1B in the open state will be described with reference to FIG.

In Fig. 4, the time point t10 is a zero crossing point when the AC voltage Vac moves from the negative polarity to the positive polarity. At the time point t11, the magnitude of the inter-switch voltage Vsw exceeds the reference 値Vth1, and at the time t12 subsequent to the time t11, the switching portion Q1 of the second electronic switching device 1B is turned on, and the magnitude of the inter-switch voltage Vsw is lower than the reference 値Vth1. The time point t13 is a zero crossing point when the AC voltage Vac moves from the positive polarity to the negative polarity. At the time point t14, the magnitude of the inter-switch voltage Vsw exceeds the reference 値Vth1, and at the subsequent time t15 at the time point t14, the switching portion Q1 of the second electronic switching device 1B is turned on, and the magnitude of the inter-switch voltage Vsw is lower than the reference 値Vth1.

In this state, during the period in which the switch portion Q1 of the second electronic switching device 1B is turned on, the switch is closed between the two ends of the switch portion Q1 of the second electronic switch device 1B, and the switch is switched to either of the two electronic switch devices 1A and 1B. The inter-voltage Vsw becomes approximately 0 [V].

The switch portion Q1 of the second electronic switching device 1B is rendered non-conductive near the zero crossing point (0 [V]) of the AC voltage Vac, and is turned on when the magnitude of the inter-switch voltage Vsw exceeds the reference 値Vth1. When the magnitude of the inter-switch voltage Vsw is less than the reference 値Vth1, the monitor signals S1a and S1b are at the H level. However, if the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference 値Vth1, the monitor signals S1a and S1b become the L level. Therefore, in the example of Fig. 4, the monitoring signals S1a and S1b become the H level from the time t12 when the switch unit Q1 is turned on, and the time when the magnitude of the inter-switch voltage Vsw reaches the time t14 of the reference 値Vth1. At t14, the monitoring signals S1a, S1b will become the L level.

When the monitor signal S1b is at the L level, the switch control unit 51 of the second electronic switch device 1B turns on the switch unit Q1. Therefore, at the time point t12 subsequent to the time point t11 and the time point t15 subsequent to the point t14, the switch portion Q1 of the second electronic switching device 1B is turned on, and the inter-switch voltage Vsw becomes approximately 0 [V]. Therefore, at time points t12 and t15, the monitoring signals S1a and S1b become the H level. While the switch unit Q1 of the second electronic switch device 1B is in the on state, the second electronic switch device 1B repeats the above operation. As a result, during the period from the time t10 to the time t12 and the period from the time t13 to the time t15, the switching voltage Vsw is intermittently generated, and the power supply to the power supply unit 43 is intermittently performed in any of the two electronic switching devices 1A and 1B. .

As described above, the switching portion Q1 of the second electronic switching device 1B (also referred to as the other switching portion Q14) is turned on, and the inter-switching voltage Vsw of the first electronic switching device 1A is also approximately 0 [V]. Therefore, the control unit 5 of the first electronic switching device 1A can detect the switching portion voltage Qsw of the second electronic switching device 1B by monitoring the switching voltage Vsw in accordance with the monitoring signal from the voltage monitoring unit 32 (other switching units Q14) ) on/off status. In other words, in the electronic switch device 1 of the present embodiment, the control unit 5 has a function as a determination unit, and can determine the operation state of the other switch unit Q14 of the other electronic switch device 1.

In the fourth electronic switching device 1A, the period in which the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference value thVth1 is a short period from the time point t11 to the time point t12 and from the time point t14 to the time point t15. In other words, the length (pulse width) of the period in which the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference 値Vth1 is continuously generated in a plurality of times. Therefore, in the first electronic switch device 1A, the first feed circuit 41 is used to supply electric power to the power supply unit 43.

In the second electronic switching device 1B, the switching control unit 52 controls the switching unit by controlling the switching unit Q1 to be in the ON state, and the first feeding circuit 41 is used to supply the power to the power supply unit 43. 44. (3) Advantages

As described above, the electronic switch device (1) of the first aspect includes a switch unit (Q1), a control unit (5), a voltage monitoring unit (32), and a determination unit. The switch unit (Q1) is electrically connected between the AC power source (11) and the load (12), and switches between conduction and non-conduction between the AC power source (11) and the load (12). The control unit (5) (switch control unit 51) controls the switch unit (Q1). The voltage monitoring unit (32) monitors the voltage across the switch unit (Q1), that is, the voltage between switches (Vsw). The determination unit determines that the switch unit (Q1) of the other electronic switch device (1) electrically connected between the AC power source (11) and the load (12) is also determined based on the monitoring result of the voltage monitoring unit (32). That is, the operating state of the other switch unit (Q14).

According to this configuration, the control unit 5 can control the switch unit (Q1) in consideration of the operation state of the other switch unit (Q14). That is to say, according to this configuration, there is an advantage that it is difficult to compete with the control of the other electronic switching device (1).

Further, the electronic switching device (1) of the second aspect has a power supply unit (43) and two or more feeding circuits (the first feeding circuit 41 and the second feeding) as in the first aspect. The circuit 42), the switching unit (44), and the switching control unit (52). The power supply unit (43) is electrically connected between both ends of the switch unit (Q1), and generates a control voltage by supplying electric power from the AC power supply (11). Two or more feed circuits (the first feed circuit 41 and the second feed circuit 42) are electrically connected between both ends of the switch unit (Q1), and are between the switch unit (Q1) and the power supply unit (43). The path to supply electricity. The switching unit (44) switches one of the feed circuits (the first feed circuit 41 and the second feed circuit 42) that feeds the power supply path to two or more feed circuits (the first feed circuit 41 and the second feed circuit 42). The switching control unit (52) controls the switching unit (44) in accordance with the waveform of the inter-switch voltage (Vsw). The control unit (5) (switch control unit 51) is operated by receiving the supply of the control voltage from the power supply unit (43).

According to this configuration, as the path for supplying electric power from the AC power supply (11) to the power supply unit (43), there are two feeding circuits (the first feeding circuit 41 and the second feeding circuit 42), and the supplied electric power is supplied to the power supply unit via the feeding circuit. The power supply unit (43) is supplied. The switching of the two feeding circuits (the first feeding circuit 41 and the second feeding circuit 42) is performed in accordance with the inter-switch voltage (Vsw). In the electronic switching device (1), the voltage monitoring unit (32) monitors the switching voltage (Vsw) to detect the on/off state of the switching portion (Q1) of the other electronic switching device (1). For example, the switch unit (Q1) of the first electronic switch device (1A) is turned off, and the switch unit (Q1) of the second electronic switch device (1B) is turned on. At this time, the first electronic switching device (1A) in which the switch unit (Q1) is in the off state can detect that the switch portion (Q1) of the second electronic switch device (1B) is turned on according to the waveform of the voltage between the switches (Vsw). . Therefore, the first electronic switching device (1A) switches the feeding circuit in accordance with the on state of the switching portion (Q1) of the second electronic switching device (1B). That is, the electronic switching device (1) switches the feeding circuit in accordance with the on/off state of the switching portion (Q1) of the other electronic switching device (1). Thereby, the electronic switch device (1) can supply electric power to the power supply unit (43) using an appropriate feed circuit, and the control voltage can be secured from the inter-switch voltage (Vsw). As a result, in the electronic switching device (1), it is not necessary to secure the control voltage for energizing the load (12), and a current converter is required, so that it can be miniaturized.

Further, if the switching portion (Q1) of the other electronic switching device (1) is detected to be turned on/off according to the voltage across the capacitor (C1) of the power supply unit (43), there is a capacitor (C1). The voltage at both ends of the switch detects the risk of the on/off state of the switch unit (Q1). With such a configuration, the electronic switch device (1) of the present embodiment is configured to directly detect the on/off state of the switch portion (Q1) of the other electronic switch device (1) in accordance with the voltage between switches (Vsw). Therefore, the detection of the on/off state of the switch unit (Q1) is high. Therefore, the electronic switching device (1) can supply electric power to the power supply unit (43) using an appropriate feeding circuit in accordance with the on/off state of the switching portion (Q1) of the other electronic switching device (1).

Further, the electronic switching device (1) of the third aspect is similar to the second aspect, wherein the voltage monitoring unit (32) is electrically connected to the switching unit (Q1) and the two or more feeding circuits (the first feeding circuit 41). Preferably, the second feed circuit 42) is between. According to this configuration, the voltage monitoring unit (32) can monitor the inter-switch voltage (Vsw) before the voltage drop by the feed circuit (the first feed circuit 41 and the second feed circuit 42), thereby improving the switch unit (Q1). The detection accuracy of the on/off state. However, this configuration is not essential for the electronic switching device (1), and the voltage monitoring unit (32) can be electrically connected to, for example, two or more feeding circuits (the first feeding circuit 41 and the second feeding circuit 42) and the power supply unit. Between (43). Further, the electronic switching device (1) of the fourth aspect is like the second aspect or the third aspect, and the two or more feeding circuits include the first feeding circuit (41) and the second feeding circuit (42), and It is preferable that the impedance of the first feeding circuit (41) is lower than that of the second feeding circuit (42). According to this configuration, the switching circuit can be switched to a feed circuit having a different impedance according to the on/off state of the switch unit (Q1), and the control voltage can be efficiently ensured from the inter-switch voltage (Vsw). However, this configuration is not an essential configuration of the electronic switching device (1), and two or more feeding circuits may include a feeding circuit having the same impedance.

Further, the electronic switching device (1) of the fifth aspect is like the second aspect or the third aspect, wherein the switching control unit (52) is based on the above-mentioned inter-switch voltage (Vsw) as a reference 値 or less than the reference 値. The length of time is also the pulse width, and the control switching portion (44) is preferred. According to this configuration, the switching control unit (52) can detect the on/off state of the switch unit (Q1) according to the pulse width of the inter-switch voltage (Vsw), and does not require complicated arithmetic processing. However, this configuration is not essential for the electronic switching device (1). For example, the switching control unit (52) can control the switching unit (44) in accordance with the effective 値 (average 値) of the voltage (Vsw) between the switches. Further, the switching control unit (52) can control the switching unit (44) in accordance with the peak value of the inter-switch voltage (Vsw) per half cycle of the AC voltage (Vac).

Further, the sixth aspect of the electronic switching device (1) is like the fifth aspect, wherein the two or more feeding circuits include the first feeding circuit (41) and the second feeding circuit (42), and the first feeding circuit (41) The impedance is preferably lower than the second feed circuit (42). It is preferable that the pulse width is the length of the time when the switching voltage Vsw is equal to or greater than the reference 値. The switching control unit (52) controls the switching unit (44) to cause the first feeding circuit (41) to be used to supply electric power when the pulse width is less than the threshold 値. According to this configuration, the switch unit (Q1) is turned on, and the magnitude of the inter-switch voltage (Vsw) is small, and the first feed circuit (41) having a low impedance is used to supply power to the power supply unit (43). . Thereby, the control voltage can be efficiently ensured even when the load (12) is energized. Further, when the switch unit (Q1) is in the off state and the inter-switch voltage (Vsw) is large, the second feed circuit (42) having a large impedance is used to supply power to the power supply unit (43). Thereby, when the switch unit (Q1) is in the off state, the leakage current flowing to the load (12) via the second feed circuit (42) can be suppressed, and the load (12) can be prevented from being erroneously operated. However, this configuration is not a necessary configuration of the electronic switch device (1). For example, it is possible to adjust the operation mode of the current intermittently supplied to the power supply unit (43) in accordance with the on/off state of the switch unit (Q1).

Further, the electronic switching device (1) of the seventh aspect is like any one of the second aspect to the sixth aspect, wherein the electronic switching device (1) further includes a sensor portion (31), and a switch control portion ( 51) It is preferable that the switch unit (Q1) is controlled in accordance with the output of the sensor unit (31). According to this configuration, the sensor portion (31) can be driven by the control voltage generated by the power supply unit (43), and the switch portion (Q1) can be automatically controlled by the output of the sensor portion (31). However, this configuration is not an essential configuration of the electronic switch device (1), and the sensor portion (31) can be omitted as appropriate.

Further, the electronic switch system (10) of the eighth aspect includes a plurality of electronic switching devices (1) of any one of the second aspect to the seventh aspect, and a plurality of electronic switching devices (1) The switch unit (Q1) is electrically connected in parallel between the AC power source (11) and the load (12). When the switch unit (Q1) of any one of the plurality of electronic switch devices (1) is in an on state, the switch unit (Q1) is in a non-conducting state in the plurality of electronic switch devices (1). In the switching device (1), the switching control unit (52) controls the switching unit (44) to switch the feeding circuit for the path for supplying power.

In other words, the electronic switch system (10) is provided with a plurality of electronic switching devices (1). Each of the plurality of electronic switching devices (1) includes a switch unit (Q1), a power supply unit (43), a switch control unit (51), and two or more feed circuits (a first feed circuit 41 and a second feed circuit). 42) A switching unit (44), a voltage monitoring unit (32), and a switching control unit (52). The switch unit (Q1) is electrically connected between the AC power source (11) and the load (12), and switches between conduction and non-conduction between the AC power source (11) and the load (12). The power supply unit (43) is electrically connected between both ends of the switch unit (Q1), and generates a control voltage by supplying electric power from the AC power supply (11). The switch control unit (51) controls the switch unit (Q1) by receiving a control voltage supplied from the power supply unit (43). Two or more feed circuits (the first feed circuit 41 and the second feed circuit 42) are electrically connected between both ends of the switch unit (Q1), and are between the switch unit (Q1) and the power supply unit (43). The path to supply electricity. The switching unit (44) switches one of the feeding circuits (the first feeding circuit 41 and the second feeding circuit 42) that are used for the path for supplying electric power to two or more feeding circuits (the first feeding circuit 41 and the second feeding circuit 42). The voltage monitoring unit (32) monitors the voltage across the switch unit (Q1), that is, the voltage between switches (Vsw). The switching control unit (52) controls the switching unit (44) based on the waveform of the inter-switch voltage (Vsw). A plurality of switch units (Q1) included in the plurality of electronic switch devices (1) are electrically connected in parallel between the AC power source (11) and the load (12). When the switch unit (Q1) of any one of the plurality of electronic switch devices (1) is turned on, the switch unit (Q1) is in a non-conducting state in the plurality of electronic switch devices (1). In the above-described other electronic switching device (1), one or more switching control units (52) control one or more switching units (44) so that the feeding circuit used for the path for supplying electric power is switched.

According to this configuration, in each of the plurality of electronic switching devices (1), as the path for supplying electric power from the AC power supply (11) to the power supply unit (43), there are two feeding circuits (the first feeding circuit 41 and the second). The feed circuit 42) supplies power via any of the feed circuits. The switching of the two feeding circuits (the first feeding circuit 41 and the second feeding circuit 42) is performed in accordance with the inter-switch voltage (Vsw). In the electronic switching device (1), the voltage between the switches (Vsw) can be monitored by the voltage monitoring unit (32) to detect the on/off state of the switch portion (Q1) of the other electronic switching device (1). For example, the switch unit (Q1) of the first electronic switch device (1A) is turned off, and the switch unit (Q1) of the second electronic switch device (1B) is turned on. At this time, the first electronic switching device (1A) in which the switch unit (Q1) is in the off state can detect that the switch portion (Q1) of the second electronic switch device (1B) is turned on according to the waveform of the inter-switch voltage (Vsw). status. Therefore, the first electronic switching device (1A) switches the feeding circuit in accordance with the on state of the switching portion (Q1) of the second electronic switching device (1B). That is, the electronic switching device (1) switches the feeding circuit in accordance with the on/off state of the switching portion (Q1) of the other electronic switching device (1). Thereby, the electronic switch device (1) can supply electric power to the power supply unit (43) using an appropriate feed circuit, and the control voltage can be secured from the inter-switch voltage (Vsw). As a result, in the electronic switching device (1), when the load (12) is energized, a current converter is not required to secure the control voltage, and thus it is possible to miniaturize. In particular, in the electronic switch system (10) in which two electronic switch devices (1) composed of three-way switches are combined, the switch unit (Q1) is the first electronic switch device (1A) and the switch unit (Q1) in a closed state. The control voltage is ensured by the second electronic switching device (1B) that is in the on state. (4) Modifications

The electronic switch device 1 of the first embodiment is merely an example of the present invention, and the present invention is not limited to the first embodiment, and the present invention is not limited to the scope of the technical idea of the present invention, and may be designed according to the design or the like. Various changes. Modifications of the first embodiment will be listed below.

The load 12 is not limited to a lighting device, and may be an electric appliance such as a ventilating fan and a monitor. Further, the load 12 is not limited to one electric appliance, and may be a plurality of electric appliances that are electrically connected in series or in parallel.

Further, the switch portion Q1 is not limited to the two-way thyristor, and may be another semiconductor switch. The switch unit Q1 can be, for example, two MOSFETs electrically connected in series between the first connection terminal 101 and the third connection terminal 103. The two MOSFETs are connected to each other by a source terminal, that is, a so-called reverse series connection, and switch between current passing and blocking in both directions. Furthermore, the switching portion Q1 may be, for example, a semiconductor element having a dual gate structure of a semiconductor material having a wide energy gap such as GaN (gallium nitride).

In addition, the number of the feeding circuits (the first feeding circuit 41 and the second feeding circuit 42) that are the paths for supplying electric power to the power supply unit 43 is not limited to two, and may be three or more.

Further, a drive circuit for driving the switch portion Q1 can be provided separately from the control portion 5. At this time, the control voltage can also be used to drive the circuit.

Further, the sensor portion 31 is not limited to a human body sensor that detects the presence or absence of a person, and may be, for example, a bright sensor. Alternatively, the sensor portion 31 may have both a human body sensor and a bright sensor. Furthermore, the electronic switching device 1 is not limited to the configuration in which the switching portion Q1 is controlled in accordance with the detection result of the sensor portion 31, and may be, for example, an electronic switching device with a remote operation function, a timing function, or a dimming function. For example, in the case of the electronic switch device 1 with a remote operation function, the control unit 5 controls the switch unit Q1 in accordance with the wireless signal from the remote controller. Further, the electronic switch device 1 can be configured to control the switch portion Q1 in accordance with, for example, an operation of an operation portion such as a push button switch or a touch switch.

Further, the voltage monitoring unit 32 does not have to monitor the inter-switch voltage Vsw after full-wave rectification, and is configured to monitor the magnitude of the inter-switch voltage Vsw before full-wave rectification. At this time, the voltage monitoring unit 32 is electrically connected between the AC input terminals of the rectifier 2. The voltage monitoring unit 32 has a function as a zero-cross detecting unit for detecting a zero-crossing point and a state detecting unit for detecting an on/off state of the switch unit Q1 of the other electronic switching device 1, but the zero-cross detecting unit It can be set separately from the status detection unit. The state detecting unit may be configured to compare only the magnitude of the inter-switch voltage Vsw with the positive polarity, or to compare only the magnitude of the inter-switch voltage Vsw with the negative polarity.

Further, the switch control unit 51 may be configured to turn on the switch unit Q1 at a timing when a predetermined time elapses after the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference 値. After the magnitude of the inter-switch voltage Vsw becomes the reference 値 or more, the switch unit Q1 is kept in the non-conduction state for a predetermined period of time. Thereby, even if the reference 値 is undulated between the plurality of electronic switching devices 1, when the switching portion Q1 of the other electronic switching device 1 is turned on, the switching voltage Vsw of the electronic switching device 1 can be suppressed. The situation of the benchmark. Therefore, it is possible to improve the detection accuracy of the on/off state of the switch portion Q1 of the other electronic switch device 1.

Further, the switch control unit 51 can be configured to output a switch control signal to the switch unit Q1 in accordance with the voltage across the capacitor C1 of the power supply unit 43. When the voltage across the capacitor C1 is equal to or higher than the threshold voltage, the switch control unit 51 turns on the switch unit Q1. The threshold voltage is the voltage across the capacitor C1 when the capacitor C1 is charged. The voltage must be such that the control unit 5 and the sensor unit 31 are activated until the switch unit Q1 is turned off.

In addition, the switching control unit 52 is configured to control the switching so that the first feeding circuit 41 is used to supply power to the power supply unit 43 when the continuous time of the inter-switch voltage Vsw is less than the reference time continues for a predetermined time or longer. Part 44. When the reference value fluctuates between the plurality of electronic switching devices 1, although the switching portion Q1 of the other electronic switching device 1 is in the on state, the switching voltage Vsw of the electronic switching device 1 itself is still at a risk of not reaching the reference threshold. Even in this case, the switch portion Q1 of the other electronic switch device 1 can be detected to be in an open state, and the first feed circuit 41 having a low impedance can be used for supplying a path of electric power to the power supply portion 43.

Further, the switching control unit 52 is configured to control the switching unit 44 in accordance with the inter-switch voltage Vsw even when the switch unit Q1 is controlled to be in the ON state, even when the switch unit Q1 is controlled to be in the OFF state.

Further, when the pulse width of the inter-switch voltage Vsw is less than the threshold ,, only the configuration of the power supply path for the power supply unit 43 of the first feed circuit 41 is not unique. For example, the switching control unit 52 may be configured to alternately switch the first feeding circuit 41 and the second feeding circuit 42 at predetermined intervals when the pulse width of the inter-switch voltage Vsw does not reach the threshold 値. As a result, when the switch unit Q1 is switched from the on state to the off state, the current can be prevented from flowing to the load 12 via the first feed circuit 41, and the opening/closing state of the switch unit Q1 of the other electronic switch device 1 can be improved. Measure accuracy.

Further, when the load switch is used as the low impedance element of the first feed circuit 41, the load switch and the switching unit 44 can be used in combination. When the load switch is turned on, the first feed circuit 41 is short-circuited between both ends of the second feed circuit 42, and electric power is supplied to the power supply unit 43 via the first feed circuit 41. Further, by turning off the load switch, electric power is supplied to the power supply unit 43 via the second feeding circuit 42.

Further, the specific circuit of the power supply unit 43 is not limited to the circuit shown in Fig. 1, and can be appropriately changed. For the power supply unit 43, for example, the capacitor C1 can be connected to the output of the regulator 45, and a capacitor other than the capacitor C1 can be connected to the output of the regulator 45. Further, the regulator 45 of the power supply unit 43 is not an essential configuration of the electronic switching device 1, and the regulator 45 can be omitted.

Further, in the first embodiment, in the comparison between the two voltages such as the voltage between the switch and the reference ,, the above "the above" includes two cases in which 値 is equal and one of the two 超过 is more than the other. Happening. However, it is not limited thereto, and "above" herein may also be equivalent to the case where only one of the two defects exceeds the other, that is, "larger". In other words, whether or not the two 値 are equal can be arbitrarily changed according to the setting of the reference 値, etc., so there is no technical difference between "above" or "large". Similarly, "not reached" can also be equated to "below". (Embodiment 2)

The electronic switch system 10A of the second embodiment is composed of a combination of three electronic switch devices 1A, 1B, and 1C as shown in FIG. In the following, the same components as those in the first embodiment are denoted by the same reference numerals, and their description is omitted.

The electronic switch devices 1A and 1B are so-called three-way switches as in the first embodiment. Further, the electronic switch device 1C is a so-called four-way switch that can connect four wires. The electronic switch device 1C includes a fourth connection terminal 104 in addition to the three connection terminals 101, 102, and 103 similar to the electronic switch devices 1A and 1B.

In the electronic switch device 1C, the connection terminal 103 and the connection terminal 104 are connected inside the electronic switching device 1C. The connection terminal 102 of the electronic switching device 1A is connected to the connection terminal 101 of the electronic switching device 1C. The connection terminal 103 of the electronic switching device 1A is connected to the connection terminal 104 of the electronic switching device 1C. The connection terminal 102 of the electronic switching device 1B is connected to the connection terminal 103 of the electronic switching device 1C. The connection terminal 103 of the electronic switching device 1B is connected to the connection terminal 102 of the electronic switching device 1C.

According to the above-described connection relationship, a plurality of switching units Q1 provided in each of the plurality of (three) electronic switching devices 1A, 1B, and 1C are electrically connected in parallel between the AC power source 11 and the load 12. Therefore, when the switch unit Q1 of any of the three electronic switching devices 1A, 1B, and 1C is turned on, the AC power supply 11 and the load 12 are turned on, and the three electronic switching devices 1A, 1B, and 1C are connected from the AC power supply 11 Power is supplied to the load 12. Therefore, in the electronic switch system 10A, each of the switch unit Q1 of the electronic switch device 1A, the switch unit Q1 of the electronic switch device 1B, and the switch unit Q1 of the electronic switch device 1C can switch the energization state to the load 12. Therefore, in the electronic switch system 10A in which the three electronic switching devices 1A, 1B, and 1C are combined, the energization state to the load 12 can be switched at three places.

Even in the electronic switch system 10A of the present embodiment described above, as in the first embodiment, the current converter is not required to secure the control voltage when the load 12 is energized. Therefore, the electronic switch device 1 can be downsized.

Further, as a modification of the second embodiment, the electronic switch system 10A may have two or more electronic switching devices 1C (so-called four-way switches), and a total of four or more electronic switching devices 1A, 1B, and 1C. At this time, the plurality of switch units Q1 provided in the plurality of electronic switch devices 1A, 1B, and 1C are electrically connected in parallel between the AC power source 11 and the load 12, whereby the energization state to the load 12 can be switched at four or more places. .

The configuration (including the modification) of the second embodiment can be used in combination with the configuration (including the modification) of the first embodiment as appropriate. (Embodiment 3) (1) Details

Hereinafter, the configuration of the electronic switch device 1 and the electronic switch system 10 of the present embodiment will be described with reference to FIGS. 2 and 6.

As shown in FIG. 2, the electronic switch device 1 includes a rectifier 2 and a circuit unit 3 in addition to the switch unit Q1 and the three connection terminals 101, 102, and 103. The circuit unit 3 includes an auxiliary switch unit Q2, a voltage monitoring unit 32, a power generation block 4, a control unit 5, a determination unit 53, and a sensor unit 31. The switch portions Q1 and the three connection terminals 101, 102, and 103, the rectifier 2, and the circuit portion 3 are housed in one housing. The electronic switch device 1 is attached to a wall or the like by being fixed to a wall or the like by a frame.

Each of the three connection terminals 101, 102, and 103 is a component that is electrically or mechanically connected to the wiring. The connection between the connection terminal 101 and the connection terminal 103 is as described above, and the switch portion Q1 is connected. The connection terminal 102 is an internal extension terminal of the connection terminal 101 and is electrically connected to the connection terminal 101. The "terminal" such as the "connection terminal" of the present embodiment may not be a component (terminal) for connecting a power supply line, and may be, for example, a wire of an electronic component or a part of a conductor included in the circuit board.

The switch unit Q1 is electrically connected between the AC power source 11 and the load 12, and switches between conduction and non-conduction between the AC power source 11 and the load 12. In the present embodiment, the switch unit Q1 is constituted by a three-terminal bidirectional thyristor (triode flow switch). The switch portion Q1 is electrically connected between the connection terminal 101 and the connection terminal 103, and switches the passage and interruption of the current in both directions between the connection terminal 101 and the connection terminal 103. The control terminal (the gate terminal of the bidirectional thyristor) of the switch portion Q1 is electrically connected to the AC input terminal of the rectifier 2. Further, the control terminal of the switch unit Q1 is electrically connected to the connection terminal 103 via the resistor R0. In Fig. 2, the switch unit Q1 and the mechanical switch having the contacts are marked with the same circuit symbol.

The auxiliary switch unit Q2 is electrically connected between the rectifier 2 and the power generating block 4, and switches between the direct current output terminals of the rectifier 2 and the non-conducting. In the present embodiment, the auxiliary switch unit Q2 is composed of an enhanced n-channel MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor). The 汲 terminal of the auxiliary switch unit Q2 is electrically connected to the DC output terminal of the high potential side of the rectifier 2. The source terminal of the auxiliary switch unit Q2 is electrically connected to the DC output terminal (ground) of the low potential side of the rectifier 2. The auxiliary switch unit Q2 is controlled by inputting a control signal (first control signal) CS1 from the control unit 5 to the gate terminal as will be described later.

When the auxiliary switch unit Q2 is non-conductive, a control voltage (gate voltage) of a considerable magnitude is not applied to the control terminal of the switch unit Q1, and the switch unit Q1 is rendered non-conductive. When the auxiliary switch unit Q2 is turned on, current flows to the resistor R0 via the auxiliary switch unit Q2 and the rectifier 2, whereby a control voltage of a considerable magnitude is applied to the control terminal of the switch unit Q1, and the switch unit Q1 is turned on.

The rectifier 2 is composed of a diode bridge. The rectifier 2 rectifies the voltage applied between both ends of the switch unit Q1 (hereinafter also referred to as "switching voltage Vsw") by full-wave rectification, and outputs it to the power generation block 4. Therefore, the power generating block 4 is connected between the DC output terminals of the rectifier 2. The power generation block 4 uses the full-wave rectified electric power input from the rectifier 2 to generate a "control voltage" required for driving the control unit 5 and the sensor unit 31, for example.

Hereinafter, it is assumed that the switch unit Q1 is in a non-conducting state, and the AC voltage Vac is applied from the AC power supply 11 to the switch unit Q1. In other words, when the switch portion Q1 is non-conductive, the inter-switch voltage Vsw is substantially the same as the AC voltage Vac from the AC power source 11. In the following, the polarity of the AC voltage Vac and the inter-switch voltage Vsw at which the connection terminal 101 is at a high potential is referred to as "positive polarity", and the polarity of the AC voltage Vac and the inter-switch voltage Vsw at which the connection terminal 103 is at a high potential is referred to as "negative Sex."

The voltage monitoring unit 32 is configured to monitor (detect) the magnitude of the inter-switch voltage Vsw. In the present embodiment, the voltage monitoring unit 32 is configured to detect a zero crossing of the inter-switch voltage Vsw. Further, the voltage monitoring unit 32 is configured to output a detection signal to the control unit 5. The electronic switch device 1 of the present embodiment includes a detecting unit (first detecting unit) 321 and a detecting unit (second detecting unit) 322 as the voltage monitoring unit 32. Moreover, in this embodiment, the detection signal is also two (detection signal (first detection signal) S11, detection signal (second detection signal) S12).

The detecting unit 321 is electrically connected to the connection terminal 101. The detecting unit 321 detects the voltage between the switches VVS from the negative polarity by comparing the magnitude of the voltage between the connection terminal 101 and the ground (reference potential point) with the reference 値Vth10 (refer to FIG. 7 for example, 12 [V]). Switch to the zero crossing when positive polarity. The detecting unit 321 outputs a detection signal S11 indicating the monitoring result (detection result) to the control unit 5. The signal level of the detection signal S11 is set to the H level when the voltage between the connection terminal 101 and the ground is less than the reference voltage thVth10, and the voltage between the connection terminal 101 and the ground is the reference 値Vth10 or more. At the time, it becomes the L level.

The detecting unit 322 is electrically connected to the connection terminal 103. The detecting unit 322 detects a zero crossing when the inter-switch voltage Vsw is switched from the positive polarity to the negative polarity by comparing the magnitude of the voltage between the connection terminal 103 and the ground and the reference 値Vth10. The detecting unit 322 outputs a detection signal S12 indicating the monitoring result (detection result) to the control unit 5. The signal level of the detection signal S12 is H level when the magnitude of the voltage between the connection terminal 102 and the ground is less than the reference 値Vth10, and becomes L when the magnitude of the voltage between the connection terminal 102 and the ground is 値Vth10 or more. Level.

In other words, when the detecting unit 321 detects that the positive polarity switching voltage Vsw has moved from the state of the reference 値Vth10 to the state above the reference 値Vth10, the detection unit 321 judges the zero crossing and detects the signal. The signal level of S11 is set to the L level. Similarly, when the detecting unit 322 detects that the negative polarity switching voltage Vsw has moved from the state of the reference 値Vth10 to the state above the reference 値Vth10, the detection unit 322 determines that the zero crossing is performed, and the detection signal S12 is detected. The signal level is set to the L level. Therefore, the detection points of the zero crossing detected by the detecting unit 321 and the detecting unit 322 are slightly delayed in time compared with the zero crossing (0 [V]) in the strict sense.

The power generation block 4 has a feed circuit 430, a power supply unit 43, a power supply input terminal 401, and a power supply output terminal 402. The power supply unit 43 is electrically connected to the switch unit Q1. The power supply unit 43 is configured to generate a control voltage of the control unit 5 by the supply of electric power from the AC power supply 11 . The feed circuit 430 is electrically connected between the switch unit Q1 and the power supply unit 43.

Both the feed circuit 430 and the power supply unit 43 are electrically connected between the DC output terminals of the rectifier 2. The power input terminal 401 is equivalent to the input terminal of the feed circuit 430, and is electrically connected to the DC output terminal of the high potential side of the rectifier 2. Therefore, when the switch unit Q1 and the auxiliary switch unit Q2 are in a non-conducting state, a full-wave rectified inter-switch voltage Vsw is applied between the power supply input terminal 401 and the ground (the DC output terminal on the low potential side of the rectifier 2). That is, the pulse current voltage output from the rectifier 2. The power output terminal 402 corresponds to an output terminal of the power supply unit 43 and is electrically connected to the control unit 5. Thereby, when the power supply unit 43 generates the control voltage, the power supplied to the power supply unit 43 must be supplied to the power supply unit 43 via the feed circuit 430. The feed circuit 430 is, for example, a step-down circuit that steps down the input voltage (the inter-switch voltage Vsw) and outputs it to the power supply unit 43.

The feed circuit 430 includes a Zener diode (first Zener diode) ZD1, an active device Q10, a resistor (first resistor) R1, a resistor (second resistor) R2, a diode D1, and a current limiting portion. 46. The current limiting unit 46 includes a switching element (first switching element) Q11, a resistor (third resistor) R3, and a resistor (fourth resistor) R4. Further, the feed circuit 430 further includes a Zener diode (second Zener diode) ZD2, a switching element (second switching element) Q12, a switching element (third switching element) Q13, and a resistor (5th resistor) ) R5 and resistor (6th resistor) R6. The power supply unit 43 has a capacitor C1 and a regulator 45.

Between the power input terminal 401 and the ground, the active device Q10, the resistor R3, the diode D1, and the capacitor C1 are electrically connected in series. Thereby, the series circuit of the active device Q10, the resistor R3, and the diode D1 constitutes a part of the path for supplying power to the power supply unit 43, that is, a part of the charging path 47 of the capacitor C1. The active device Q10 is provided on the charging path 47 of the capacitor C1 between both ends of the switching portion Q1, and is a voltage-driven active device that is turned on when the magnitude of the inter-switch voltage Vsw is equal to or greater than a predetermined value. The active device Q10 is constituted by an enhanced n-channel MOSFET as an example.

The 汲 terminal of the active device Q10 is electrically connected to the power input terminal 401. The source terminal of the active device Q10 is electrically connected to the anode terminal of the diode D1. The cathode terminal of the diode D1 is electrically connected to the ground via the capacitor C1. The resistor R1 and the Zener diode ZD1 are electrically connected in series between the power supply input terminal 401 and the ground. The anode terminal of the Zener diode ZD1 is electrically connected to the ground. The gate terminal (control terminal) of the active device Q10 is electrically connected to the cathode terminal of the Zener diode ZD1 via the resistor R2.

The Zener diode ZD2, the switching element Q12, and the resistor R5 are electrically connected in series between the anode terminal and the ground of the diode D1. The cathode terminal of the Zener diode ZD2 is electrically connected to the anode terminal of the diode D1. The switching element Q12 is constituted by an enhancement type n-channel MOSFET as an example. The 汲 terminal of the switching element Q12 is electrically connected to the anode terminal of the Zener diode ZD2. The source terminal of the switching element Q12 is electrically connected to the resistor R5. The switching element Q12 is controlled by inputting a control signal (second control signal) CS2 from the control unit 5 to the gate terminal as will be described later.

The switching element Q13 is constituted by an npn-type bipolar transistor as an example. The base terminal of the switching element Q13 is electrically connected to the source terminal of the switching element Q12 and the connection point of the resistor R5. The transmitting terminal of the switching element Q13 is electrically connected to the ground. The collector terminal of the switching element Q13 is electrically connected to the output terminal of the regulator 45, that is, the power supply output terminal 402 via the resistor R6. Further, the collector terminal of the switching element Q13 is electrically connected to the control unit 5. Therefore, the charging detection signal S3 is input to the control unit 5. When the switching element Q13 is non-conductive, the signal level becomes the H level, and when the switching element Q13 is turned on, the signal level becomes the L level.

The regulator 45 is a three-terminal regulator (series regulator). The input terminal of the regulator 45 is electrically connected to the terminal on the high potential side of the capacitor C1, that is, the cathode terminal of the diode D1. The output terminal of the regulator 45 is electrically connected to the power output terminal 402.

According to the above configuration, the feed circuit 430 receives power supply from the AC power source 11 and charges the capacitor C1 at a constant voltage according to the Zener voltage (fall voltage) of the Zener diode ZD1. In other words, when the inter-switch voltage Vsw, that is, the voltage applied between the power supply input terminal 401 and the ground is equal to or greater than the predetermined voltage (hereinafter also referred to as "the lowest charging voltage"), the active device Q10 is turned on to supply power. It is supplied to the power supply unit 43. In other words, the feed circuit 430 is configured to supply the supplied electric power to the power supply unit 43 when the magnitude of the inter-switch voltage Vsw is equal to or greater than the predetermined value. Thereby, when the inter-switch voltage Vsw is equal to or higher than the minimum charging voltage, the capacitor C1 is charged at a constant voltage. The voltage across the capacitor C1 is stepped down by the regulator 45 and output from the power supply output terminal 402. In this manner, the power supply unit 43 outputs a constant voltage control voltage from the power supply output terminal 402.

That is, if the inter-switch voltage Vsw is equal to or higher than the minimum charging voltage, the active device Q10 of the feed circuit 430 is turned on, and thus the input impedance of the feed circuit 430 becomes a low impedance state. Therefore, the supplied electric power is supplied to the power supply unit 43, and the control voltage is generated in the power supply unit 43. When the capacitor C1 is in the full charge state, current does not flow from the feed circuit 430 to the power supply unit 43, and thus the input impedance of the feed circuit 430 becomes a high impedance state.

Next, the current limiting unit 46 will be described. In the current limiting portion 46, the resistor R3 is a shunt resistor that is electrically connected to the source terminal of the active device Q10 and functions as a detecting resistor that detects the current flowing to the active device Q10. Here, the resistor R3 is electrically connected between the source terminal of the active device Q10 of the feed circuit 430 and the anode terminal of the diode D1. The switching element Q11 is electrically connected between the source terminal of the active device Q10 and the control terminal (gate terminal). The switching element Q11 is constituted by an npn-type bipolar transistor as an example. The transmitting terminal of the switching element Q11 is electrically connected to the source terminal of the active device Q10 via the resistor R3. The collector terminal of the switching element Q11 is electrically connected to the gate terminal of the active element Q10. The base terminal of the switching element Q11 is electrically connected to the source terminal of the active element Q10 via a resistor R4.

According to the configuration described above, when the current (the drain current) flowing through the active device Q10 becomes a predetermined value or more, the current limiting unit 46 turns on the switching element Q11 with the voltage across the resistor R3, thereby turning off the active device Q10. . As a result, the charging path 47 of the capacitor C1 is blocked, and the generation of the control voltage at the power supply unit 43 is stopped. In other words, when a current equal to or greater than 値 flows from the AC power source 11 to the power source unit 43, the capacitor C1 is electrically disconnected from the power source input terminal 401 by the current limiting unit 46, and the power supplied to the power source unit 43 is stopped.

The control unit 5 includes, for example, a microcomputer as a main configuration. The microcomputer is realized as a function of the control unit 5 by executing a program stored in the memory of the microcomputer in a CPU (Central Processing Unit). The program can be pre-stored in the memory of the microcomputer, or stored in a storage medium such as a memory card, or provided via an electrical communication loop. In other words, the above program is a program for causing the microcomputer to function as the control unit 5.

The control unit 5 operates by receiving the supply of the control voltage from the power generation block 4. The control unit 5 has a function of indirectly controlling the switch unit Q1 by controlling the auxiliary switch unit Q2. That is, the control unit 5 is configured to control the switch unit Q1. Specifically, the control unit 5 outputs a control signal CS1 to the control terminal (gate terminal) of the auxiliary switch unit Q2 in accordance with the detection result of the sensor unit 31, thereby switching the conduction and non-conduction of the auxiliary switch unit Q2. The auxiliary switch unit Q2 is controlled. When the conduction and non-conduction of the auxiliary switch unit Q2 are switched, the conduction and non-conduction of the switch unit Q1 are switched as described above. Further, when the auxiliary switch unit Q2 is turned on, that is, when the switch unit Q1 is turned on, the control unit 5 determines the control signal CS1 based on the detection signals (detection signals S11 and S12) output from the voltage monitoring unit 32. The signal level is set to the H level. The control unit 5 includes a drive circuit for driving the auxiliary switch unit Q2, and the control unit 5 directly controls the auxiliary switch unit Q2.

Moreover, the control unit 5 controls the switching element Q12 by switching the conduction and non-conduction of the switching element Q12 by outputting the control signal CS2 to the control terminal (gate terminal) of the switching element Q12. In the present embodiment, when the auxiliary switch unit Q2 is switched from the on state to the non-conduction state, the control unit 5 turns on the switching element Q12 by switching the signal level of the control signal CS2 from the L level to the H level. . When the switching element Q12 is in the on state, the sum of the charging voltage of the capacitor C1 and the forward voltage of the diode D1 exceeds the Zener voltage of the Zener diode ZD2, and the current flows to the base terminal of the switching element Q13. As a result, the switching element Q13 is turned on, and the signal level of the charging detection signal S3 is changed from the H level to the L level. When the switching element Q12 is in the on state, the sum of the charging voltage of the capacitor C1 and the forward voltage of the diode D1 is equal to or less than the Zener voltage of the Zener diode ZD2, and the current does not flow to the switching element Q13. Base terminal. Therefore, since the switching element Q13 maintains a non-conduction state, the signal level of the charging detection signal S3 is maintained at the H level.

That is to say, in the on state of the switching element Q12, if the capacitor C1 is sufficiently charged to ensure the control voltage, the signal level of the charging detection signal S3 becomes the L level. Further, in the on state of the switching element Q12, if the capacitor C1 is not sufficiently charged and the control voltage cannot be secured, the signal level of the charging detection signal S3 is maintained at the H level. Therefore, the control unit 5 can determine whether or not the control voltage can be secured by monitoring the charge detection signal S3.

In the present embodiment, the control unit 5 controls the auxiliary switch unit Q2 when the voltage monitoring unit 32 detects the zero crossing of the inter-switch voltage Vsw and determines that the control voltage can be secured by the charge detection signal S3. In other words, when the voltage monitoring unit 32 detects the zero crossing of the inter-switch voltage Vsw, the control unit 5 waits until the capacitor C1 is sufficiently charged, and then performs the control of the auxiliary switch unit Q2. .

The determination unit 53 is configured to determine the operation state of the other switch unit Q14 based on the monitoring result of the voltage monitoring unit 32. Here, the "other switch portion Q14" is a switch portion Q1 of another electronic switch device 1 that is electrically connected between the AC power source 11 and the load 12. For example, the determination unit 53 of the electronic switch device 1A is configured to determine an operation state (on/off) of the switch unit Q1 (other switch unit Q14) of the other electronic switch device 1B. In the present embodiment, when the voltage monitoring unit 32 detects the zero crossing of the inter-switch voltage Vsw, the determining unit 53 determines the other switching unit Q14 based on the pulse width W1 (refer to FIG. 7) appearing in the detecting signal S10. The state of action. Here, the "pulse width" is the length (Vsw) of the inter-switch voltage Vsw which is the length of the reference 値Vth10 or more. Moreover, in FIG. 7, the detection signal S10 is a signal for causing the detection signal S11 to coincide with the detection signal S12.

When the comparison unit 53 compares the pulse width W1 with the threshold 値 and finds that the pulse width W1 has not reached the threshold 値, it determines that the other switch unit Q14 is in the ON state. When the determination unit 53 finds that the pulse width W1 is equal to or greater than the threshold ,, the determination unit 53 determines that the other switch unit Q14 is in a non-conduction state. The threshold enthalpy is set to, for example, about 1/8 of one cycle of the AC voltage Vac. In the present embodiment, the determination unit 53 is one of the functions of the control unit 5, but may be constituted by a hardware (or a soft body) other than the control unit 5.

The sensor unit 31 detects whether or not a person is present in the detection area. The sensor portion 31 includes, for example, a pyroelectric element and detects infrared rays released from the human body, thereby judging whether or not there is a person in the detection area. When the sensor unit 31 detects a person in the detection area, the sensor unit 31 outputs an opening control instruction for turning the switch unit Q1 to the ON state to the control unit 5.

When the control unit 5 receives the opening control instruction from the sensor unit 31, the signal level of the control signal CS1 given to the auxiliary switch unit Q2 is set to the H level based on the detection signal from the voltage monitoring unit 32. Specifically, the control unit 5 turns on the auxiliary switch unit Q2 when the inter-switch voltage Vsw is zero due to the detection signal from the voltage monitoring unit 32. Thereby, the switch unit Q1 is turned on. In other words, the control unit 5 is configured to set the actuation state of the switch unit Q1 to the on state when the activation control instruction for turning the operation state of the switch unit Q1 is turned on.

Here, the switch unit Q1 is constituted by the two-way thyristor as described above, and is non-conductive in the vicinity of the zero-crossing (0 [V]) of the AC voltage Vac from the AC power supply 11. Strictly speaking, when the current flowing through the switch unit Q1 becomes 0 [A] after the switch unit Q1 is turned on, the switch unit Q1 is rendered non-conductive. Therefore, depending on the type of the load 12, it may be more than the zero crossing of the AC voltage Vac. At the early point, the switch unit Q1 becomes non-conductive.

In other words, the control unit 5 causes the auxiliary switch unit Q2 to be turned on each time the voltage monitoring unit 32 detects that the inter-switch voltage Vsw is zero crossing, that is, each time the AC voltage Vac passes a slight half cycle. The part Q1 is turned on. In the present embodiment, the control unit 5 performs the process of controlling the auxiliary switch unit Q2 when the detecting unit 321 detects that the inter-switch voltage Vsw is zero, and the detecting unit 322 detects that the inter-switch voltage Vsw is zero. The processing of the auxiliary switch unit Q2 is controlled. Further, when the switch unit Q1 is turned off, the control unit 5 controls the auxiliary switch unit Q2 so that the auxiliary switch unit Q2 is rendered non-conductive, thereby maintaining the switch unit Q1 non-conductive. (2) Acting

The operation of the electronic switch device 1 and the electronic switch system 10 will be described with reference to FIGS. 7 and 8. Fig. 7 illustrates an operation when the switch unit Q1 of both of the electronic switch devices 1A and 1B is in a closed state. Fig. 8 exemplifies an operation when the switch portion Q1 of the electronic switch device 1A is in a closed state and the switch portion Q1 of the electronic switch device 1B is in an open state. Further, in the examples of FIGS. 7 and 8, the electronic switch device 1B will be described as "other electronic switch device 1B", and the operation of the electronic switch device 1A will be described. Therefore, in the examples of FIGS. 7 and 8, the switch portion Q1 of the electronic switching device 1B is the other switch portion Q14.

In the seventh and eighth figures, the AC voltage "Vac" of the AC power source 11, the switching voltage "Vsw" of the switch unit Q1 of the electronic switching device 1A, and the detection signal "S10" of the electronic switching device 1A are sequentially indicated from the upper stage. And the operation state (conduction/non-conduction) of the other switch unit Q14. In the example of Fig. 7 and Fig. 8, the signal level of the detection signal "S10" is L level when the magnitude of the inter-switch voltage Vsw is above the reference 値Vth10, and the magnitude of the voltage Vsw between the switches is not up to the reference.値Vth10 is H level. 7 and 8 show the inter-switch voltage Vsw of the electronic switching device 1A. However, this inter-switch voltage Vsw is substantially the same as the inter-switch voltage Vsw of the other electronic switching device 1B. Further, for "Q14" indicating the operation state of the other switch portion Q14, "ON" indicates conduction, and "OFF" indicates non-conduction.

First, the operation when the switch unit Q1 of both the electronic switch devices 1A and 1B is in the off state will be described using FIG. In the example of Fig. 7, since the switch portion Q1 of both the electronic switch devices 1A and 1B is in the off state, the inter-switch voltage Vsw is the same voltage as the AC voltage Vac.

In the example of Fig. 7, the inter-switch voltage Vsw is switched from the negative polarity to the positive polarity at the time point t20, and is switched from the positive polarity to the negative polarity at the time point t23 after the time point t20. Further, in the example of Fig. 7, from the time point t21 after the time point t20 to the time point t22 before the time point t23, the magnitude of the inter-switch voltage Vsw becomes the reference 値Vth10 or more, and the signal level of the detection signal S10 becomes L. Level. Similarly, in the example of Fig. 7, from the time point t24 after the time point t23 to the time point t25, the signal level of the detection signal S10 becomes the L level.

Here, the pulse width W1 of the detection signal S10 (the length of time from the time point t21 to the time point t22, and the length of time from the time point t24 to the time point t25) is a length corresponding to a half cycle of the alternating current voltage Vac. And it is above the threshold. Therefore, in the example of Fig. 7, the pulse width W1 is continuously equal to or greater than the threshold 复 in the first cycle of the AC voltage Vac, and the determination unit 53 of the electronic switching device 1A determines that the other switch unit Q14 is in the off state.

Next, the operation of the switch unit Q1 of the electronic switch device 1A in the OFF state and the switch unit Q1 of the electronic switch device 1B in the ON state will be described with reference to FIG. In the example of Fig. 8, the inter-switch voltage Vsw is switched from the negative polarity to the positive polarity at the time point t26, and is switched from the positive polarity to the negative polarity at the time point t29 after the time point t26. Further, in the example of Fig. 8, at time t27 after time t26, the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference 値Vth10, and the signal level of the detection signal S10 is changed from the H level to the L level. Then, at time t28 after time t27, the other switch unit Q14 is turned on, and the inter-switch voltage Vsw is made approximately 0 [V]. Therefore, the signal level of the detection signal S10 is changed from the L level to the H level at the time point t28. Similarly, in the example of Fig. 8, at time t30 after time t29, the signal level of the detection signal S10 is changed from the H level to the L level, and at the time point t31 after the time point t30, the signal position of the signal S10 is detected. The criterion is from the L level to the H level.

Here, the pulse width W1 of the detection signal S10 (the length of time from the time point t27 to the time point t28 and the length of time from the time point t30 to the time point t31) are less than the threshold 値. Therefore, in the example of Fig. 8, the pulse width W1 does not reach the threshold 复 continuously for a plurality of cycles of the AC voltage Vac, and therefore the determination unit 53 of the electronic switching device 1A determines that the other switch portion Q14 is in the ON state. (3) Advantages

Hereinafter, the advantages of the electronic switch device 1 of the present embodiment will be described. First, an electronic switch device of a comparative example will be described. The electronic switch device of the comparative example is different from the electronic switch device 1 of the present embodiment in that the determination unit is not provided. In the following, an electronic switch system including a system of an electronic switch device of a comparative example and another electronic switch device will be described as a comparative example.

For example, it is assumed that the switch portion of the electronic switch device of the comparative example is in the off state, and the switch portion (other switch portion) of the other electronic switch device is in the on state. Then, it is assumed that in this state, the control unit of the electronic switching device of the comparative example has accepted the opening control instruction from the sensor portion. At this time, since the other switch parts are in the on state, power is supplied from the AC power source to the load. Therefore, in this state, it is not necessary to turn on the switch portion of the electronic switching device.

However, since the electronic switch device of the comparative example does not include the determination unit, it is not possible to consider the operation state of the other switch unit when controlling the switch unit. Therefore, the control unit of the electronic switching device of the comparative example turns on the switch unit even when the other switch unit is in the on state. When the switch portion of the electronic switch device of the comparative example is turned on at the same time as the switch portion of the other electronic switch device, the current flowing through the load may flow toward each switch portion, and the switch portions may not be maintained in the on state. At this time, for example, if the load is a lighting device, the brightness of the load may change, and the person who is exposed to the visual load may feel uncomfortable. Further, the control by the control unit of the electronic switch of the comparative example and the control unit of another electronic switch device may be disturbed. That is to say, the control of the electronic switching device of the comparative example may compete with the control of other electronic switching devices.

Further, in the electronic switch device 1 of the present embodiment, the voltage monitoring unit 32 monitors the voltage across the switch unit Q1, that is, the magnitude of the inter-switch voltage Vsw. Then, in the electronic switch device 1 of the present embodiment, the determination unit 53 determines the operation state of the switch unit Q1 (other switch unit Q14) of the other electronic switch device 1 based on the monitoring result of the voltage monitoring unit 32. Therefore, in the electronic switch device 1 of the present embodiment, the control unit 5 can control the switch unit Q1 in consideration of the operation state of the other switch unit Q14.

For example, when the control unit 5 of the electronic switch device 1 of the present embodiment receives the opening control instruction from the sensor unit 31 when the other switch unit Q14 is in the open state, the control unit 5 can wait for the other switch unit Q14 to be in the off state and then switch the switch. The part Q1 is turned on. In other words, the control unit 5 can be configured to delay the operation of the switch unit Q1 in the on state when the determination unit 53 receives the open control instruction and determines that the operation state of the other switch unit Q14 is the on state. When the determination unit 53 determines that the operation state of the other switch unit Q14 is the ON state, the control unit 5 does not wait for the other switch unit Q14 to be in the OFF state, and the switch unit Q1 can be turned off without waiting for the other switch unit Q14 to be in the OFF state. Turn on. As described above, the electronic switch device 1 of the present embodiment has an advantage that it is possible to perform control that is less likely to compete with the control of the other electronic switch device 1. (4) Modifications

In the present embodiment, the determination unit 53 is configured to determine the operation state of at least the other switch unit Q14 in accordance with the control state of the switch unit Q1 and the monitoring result of the voltage monitoring unit 32 by the control unit 5. For example, when the signal level of the control signal CS1 is at the L level, the determination unit 53 determines that the other switch unit Q14 is in the on state when the pulse width W1 is not continuously reached the threshold 复 for one cycle of the AC voltage Vac. Further, when the signal level of the control signal CS1 is at the L level, and the pulse width W1 is continuously equal to or greater than the threshold 复 for a plurality of cycles of the AC voltage Vac, the determination unit 53 determines that the other switch unit Q14 is in the off state.

Further, when the signal level of the control signal CS1 is at the H level, and the pulse width W1 does not reach the threshold 复 for a plurality of consecutive times in one cycle of the AC voltage Vac, the determination unit 53 determines that the switch unit Q1 is normally operated. Further, when the signal level of the control signal CS1 is at the H level, and the pulse width W1 is continuously equal to or greater than the threshold 复 for a plurality of cycles of the AC voltage Vac, the determination unit 53 determines that the switch unit Q1 is abnormal. The reason is that when the switch unit Q1 is normal, when the control for turning on the switch unit Q1 is performed, regardless of the operation state of the other switch unit Q14, the pulse width W1 is continuously delayed for several times in one cycle of the AC voltage Vac. Threshold.

Further, when the signal level of the control signal CS1 is at the H level, the determination unit 53 cannot determine the operation state of the other switch unit Q14. However, at this time, since the switch unit Q1 is in the on state, it is not necessary to determine the operation state of the other switch unit Q14.

In the present embodiment, the determination unit 53 determines whether the pulse width W1 is equal to or greater than the threshold 値 in the first cycle of the AC voltage Vac for a plurality of times (or less than the threshold 値), but the operation state of the other switch unit Q14 is determined. Composition. For example, the determination unit 53 can determine the operation state of the other switch unit Q14 by whether or not the half-cycle pulse width W1 of the AC voltage Vac is equal to or greater than the threshold ( (or less than the threshold 値). Further, the determination unit 53 can determine the operation state of the other switch unit Q14 by whether the pulse width W1 is continuously equal to or longer than the threshold 3 (or less than the threshold 3).

In the present embodiment, the pulse width W1 is the length of time during which the magnitude of the inter-switch voltage Vsw is equal to or greater than the reference 値Vth10. However, the length of the inter-switch voltage Vsw may not be the length of the reference 値Vth10. At this time, when the pulse width W1 is less than the threshold 値, the determination unit 53 determines that the switching unit Q1 of the other electronic switching device 1 is in the non-conduction state. In addition, when the pulse width W1 is equal to or greater than the threshold 此时, the determination unit 53 determines that the switch unit Q1 of the other electronic switching device 1 is in the ON state.

In the present embodiment, the determination unit 53 is configured to determine the operation state of the switch unit Q1 of the other electronic switch device 1 in accordance with the pulse width W1. However, the determination unit 53 may have another configuration. The determination unit 53 can determine the operation state of the other switch unit Q14 even when the pulse width W1 does not exist (that is, when the other switch unit Q14 is always turned on). For example, the determination unit 53 can determine that the switch portion Q1 of the other electronic switching device 1B is in an on state by the length of the time at which the signal level of the detection signal S10 is H level exceeds the threshold 値 (for example, 500 [ms]). The threshold enthalpy is set to, for example, consider the length of time during which the inter-switch voltage Vsw is not generated due to an instantaneous power failure.

In the present embodiment, the control unit 5 of the electronic switching device 1 is assumed to be configured to switch the switch unit Q1 from the on state to the off state after receiving the turn-on control instruction for a predetermined period of time. At this time, the control unit 5 may wait for the other switch unit Q14 to switch from the on state to the off state and the switch unit Q1 to the on state, after receiving the turn-on control instruction, or after the other switch unit Q14 is switched to the off state, and then Calculate a certain time.

In the present embodiment, the AC power source 11 is a single-phase 100 [V], 60 [Hz] commercial power source, but may be a single-phase 100 [V], 50 [Hz] commercial power source. Further, the voltage 値 of the AC power source 11 is not limited to 100 [V].

In the present embodiment, the detecting unit 321 is configured to detect a zero crossing when the inter-switch voltage Vsw is switched from a negative polarity to a positive polarity, but may be reversed. In other words, the detecting unit 321 can be configured to detect a zero crossing when the inter-switch voltage Vsw is switched from the positive polarity to the negative polarity by the voltage between the connection terminal 101 and the ground. Similarly, the detecting unit 322 is configured to detect a zero crossing when the inter-switch voltage Vsw is switched from the positive polarity to the negative polarity, but may be reversed. In other words, the detecting unit 322 can be configured to detect a zero crossing when the inter-switch voltage Vsw is switched from a negative polarity to a positive polarity by the voltage between the connection terminal 102 and the ground.

In the present embodiment, the voltage monitoring unit 32 has two detecting units (detecting units 321, 322), but the number of detecting units may be one. At this time, the voltage monitoring unit 32 can be configured to detect the zero crossing of the inter-switch voltage Vsw by comparing the inter-switch voltage Vsw with the reference 値. Moreover, at this time, the voltage monitoring unit 32 outputs the detection signal S10 to the control unit 5. Further, in the present embodiment, the voltage monitoring unit 32 is configured to monitor the magnitude of the inter-switch voltage Vsw before full-wave rectification, but may be configured to monitor the magnitude of the inter-switch voltage Vsw after full-wave rectification.

In the present embodiment, the load 12 is not limited to the lighting device, and may be, for example, an electric appliance such as a ventilating fan or a monitor. Further, the load 12 is not limited to one electric appliance, and may be a plurality of electric appliances that are electrically connected in series or in parallel.

In the present embodiment, the switch portion Q1 is a bidirectional thyristor, but the other semiconductor switch may be used. For example, the switch portion Q1 may be two MOSFETs that are electrically connected in series between the connection terminal 101 and the connection terminal 103. The two MOSFETs can be connected to each other by a source terminal, that is, a so-called reverse series connection, to switch the passage and interruption of current in both directions. Further, the switching portion Q1 may be, for example, a semiconductor element having a double gate structure of a semiconductor material having a wide energy gap such as GaN (gallium nitride).

In the present embodiment, the auxiliary switch portion Q2 is a MOSFET, and the other semiconductor switches may be used. For example, the auxiliary switch unit Q2 may be a capacitor such as an IGBT (Insulated Gate Bipolar Transistor).

In the present embodiment, the sensor unit 31 is not limited to a human body sensor that detects whether or not a person is present, and may be, for example, a brightness sensor. Also, the sensor portion 31 may have both a human body sensor and a brightness sensor. Further, the electronic switch device 1 is not limited to the configuration in which the switch portion Q1 is controlled in accordance with the detection result of the sensor portion 31, and may be, for example, an electronic switch device 1 to which a remote operation function, a timer function, or a dimming function is attached. For example, in the case of the electronic switch device 1 with the remote operation function, the control unit 5 controls the switch unit Q1 in accordance with the wireless signal from the remote controller. Further, the electronic switch device 1 can be configured to control the switch portion Q1 in accordance with, for example, an operation of an operation portion such as a push switch or a touch switch.

In the present embodiment, when "2" is compared, "above" includes two cases in which two turns are equal and one of the two turns exceeds the other. However, it is not limited thereto, and "above" herein may also be equivalent to the case where only one of the two defects exceeds the other, that is, "larger". In other words, whether or not the two 値 are equal can be arbitrarily changed according to the setting of the reference 値, etc., so there is no technical difference between "above" or "large". Similarly, "not reached" can also be equated to "below".

In the present embodiment, the configuration of the monitoring charging detection signal S3 (switching elements Q12, Q13, etc.) is not essential to the electronic switching device 1, and this configuration can be omitted as appropriate. At this time, when the control unit 5 receives the turn-on control instruction, the auxiliary switch unit Q2 is turned on only by the detection signal S10 from the detecting unit 3 every half cycle of the AC voltage Vac.

In the present embodiment, the electronic switch device 1A is operated in combination with the other electronic switch device 1B, but it is of course also possible to operate in a single form. (Embodiment 4)

Hereinafter, the electronic switch device 1 and the electronic switch system 10 of the present embodiment will be described. However, the basic configuration of the present embodiment is the same as that of the electronic switch device 1 and the electronic switch system 10 of the third embodiment. Therefore, the same reference numerals will be given to the same points, and the description thereof will be omitted. In the electronic switch device 1 of the present embodiment, the control unit 5 is configured to estimate the timing at which the operation state of the other switch unit Q14 is switched from the on state to the off state in accordance with the monitoring result of the voltage monitoring unit 32. Then, the control unit 5 is configured to set the operating state of the switch unit Q1 to the on state in accordance with the estimated time point. Therefore, in the electronic switch device 1 of the present embodiment, the control unit 5 can switch the switch unit Q1 to the on state without waiting for the other switch unit Q14 to switch from the on state to the off state.

In the present embodiment, the control unit 5 is configured to alternately repeat the first process and the second process until the switch unit Q1 is switched from the on state to the off state. The first process is a process of turning on the switch unit Q1 at a time corresponding to two cycles of the AC voltage Vac. The second process is a process of turning on the switch unit Q1 at a time corresponding to a half cycle of the AC voltage Vac. In other words, the first process is a process of turning on the switch unit Q1 for a longer period of time than the on-time of the switch unit Q1 in the second process. Then, the control unit 5 is configured to set the switch unit Q1 to the off state when the third first processing is executed.

Hereinafter, the operation of the electronic switch device 1 and the electronic switch system 10 will be described with reference to FIG. In the example of Fig. 9, the operation of the electronic switching device 1A will be described using the electronic switching device 1B as seen from the electronic switching device 1A as the "other electronic switching device 1B". Therefore, in the example of Fig. 9, the switch portion Q1 of the electronic switching device 1B is the other switch portion Q14.

Fig. 9 is a view showing the detection signal "S10" of the electronic switching device 1B and the operation state (conduction/non-conduction) of the other switch portion Q14, and the detection signal "S10" of the electronic switching device 1A, in order from the upper stage, The operating state (conduction/non-conduction) of the switch unit Q1. The detection signal S10 of the electronic switching device 1A and the detection signal S10 of the other electronic switching device 1B are the same. In the example of Fig. 9, the signal level of the detection signal "S10" is the L level when the magnitude of the inter-switch voltage Vsw is above the reference 値Vth10, and the magnitude of the inter-switch voltage Vsw is less than the reference 値Vth10. Level. Further, "Q1" indicating the operating state of the switch portion Q1 and "Q14" indicating the operating state of the other switch portion Q14 indicate that the "ON" is ON and the "OFF" indicates non-conduction.

In the example of Fig. 9, at time t32, the switch portion Q1 of the electronic switching device 1A is turned off, and the other switch portion Q14 of the other electronic switch device 1B is turned on. Further, in the example of Fig. 9, at time t32, the control unit 5 of the electronic switching device 1A has received the opening control instruction from the sensor unit 31. Moreover, the control unit 5 of the other electronic switching device 1B is before the time point t32, and the signal level of the detecting signal S10 is changed from the H level to the L level, that is, the time corresponding to the half cycle of the alternating voltage Vac, that is, The normal processing of turning on the switch unit Q1 is repeated. However, the control unit 5 of the other electronic switch device 1B alternately repeats the first process and the second process after the time t32.

First, when the control unit 5 of the other electronic switching device 1B detects that the signal level of the signal S10 is changed from the H level to the L level at the time t32, the control unit 5 is executed from the time point t33 after the time point t32 to the time point t34. The first processing of the first time. Then, the control unit 5 of the other electronic switching device 1B detects the signal level of the signal S10 from the H level to the L level at the time t35 after the time t34, from the time point t36 after the time point t35 to the time point t37. The second processing of the first time is executed. Then, the control unit 5 of the other electronic switching device 1B detects the signal level of the signal S10 from the H level to the L level at the time t38 after the time t37, from the time point t39 after the time point t38 to the time point t40. The first first processing is executed. Then, the control unit 5 of the other electronic switching device 1B changes the signal level of the detection signal S10 from the H level to the L level at the time t41 after the time point t40, and then from the time point t42 after the time point t41 to the time point t43. The second second processing is executed. Then, the control unit 5 of the other electronic switching device 1B changes the signal level of the detection signal S10 from the H level to the L level at the time t44 after the time t43, from the time point t45 after the time point t44 to the time point t46. The first processing of the third time is executed. After the time point t46, the other switch portion Q14 is turned off.

Here, the control unit 5 of the electronic switching device 1A calculates the predetermined time every time the signal level of the detection signal S10 is switched from the L level to the H level. Then, the control unit 5 of the electronic switching device 1A determines that the signal level of the detection signal S10 is maintained at the H level until the predetermined time has elapsed, and determines that the ON condition has been satisfied once the predetermined time has been calculated. Then, when the control unit 5 of the electronic switching device 1A determines that the ON condition has been satisfied for a predetermined number of times (here, three times), the switch unit Q1 is turned on. In the example of Fig. 9, the second opening condition is satisfied from the time point t33 to the time point t34 when the first time is satisfied, and from the time point t39 to the time point t40. Then, since the third opening condition is satisfied at the time point t47 before the time point t46, the switch portion Q1 is turned on. In other words, it can be considered that the control unit 5 determines that the other switch unit Q14 is switched from the on state to the off state by satisfying the third opening condition.

As described above, in the electronic switch device 1 of the present embodiment, the control unit 5 estimates the timing at which the other switch unit Q14 is switched from the on state to the off state. Then, the control unit 5 sets the switch unit Q1 to the on state in accordance with the estimated time point. Therefore, in the present embodiment, when the other switch unit Q14 is switched to the off state and the switch unit Q1 is switched to the on state, the blank time is less likely to occur, and the time during which the power is not supplied to the load 12 is less likely to occur. For example, when the load 12 is an illuminating device, when the other switch portion Q14 is switched to the closed state, the switch portion Q1 can be switched to the open state, so that the load 12 can be prevented from being instantaneously extinguished. Further, in the present embodiment, although the switch unit Q1 and the other switch unit Q14 are simultaneously turned on, the control of the electronic switch device 1 and the control of the other electronic switch device 1 are less likely to occur because of the relatively short time. Co-opetition. (Modification)

In the present embodiment, the first process is a process of turning on the switch unit Q1 at a time corresponding to two cycles of the AC voltage Vac, but the on-time of the switch unit Q1 is not limited thereto. In other words, the first process may be a process of turning on the switch unit Q1 for a longer period of time than the on-time of the switch unit Q1 in the second process.

In the present embodiment, the control unit 5 is configured to set the switch unit Q1 to the on state when it is determined that the three-time open condition has been satisfied, but may be of other configurations. In other words, the control unit 5 can be configured to set the switch unit Q1 to the on state when it is determined that the "n" times ("n" is a natural number) ON condition has been satisfied.

Further, in the electronic switch device 1 of the present embodiment, the control unit 5 is configured to alternately repeat the first process and the second process until the switch unit Q1 is switched from the on state to the off state, but other configurations may be employed. . For example, the control unit 5 may be configured to set the switch unit Q1 to the off state when the first process is performed only once.

Hereinafter, the operation of the electronic switch device 1 and the electronic switch system 10 in the above configuration will be described with reference to FIG. In the example of Fig. 10, the operation of the electronic switching device 1A will be described with reference to the electronic switching device 1B as seen in the electronic switching device 1A as the "other electronic switching device 1B". Therefore, in the example of Fig. 10, the switch portion Q1 of the electronic switching device 1B is the other switch portion Q14. Further, in the same manner as in the ninth diagram, the tenth diagram sequentially shows the detection signal "S10" of the electronic switching device 1B and the operation state (conduction/non-conduction) of the other switch portion Q14 from the upper stage, and the electronic switching device 1A. The detection signal "S10" and the operation state (on/off) of the switch unit Q1.

In the example of Fig. 10, at time t50, the switch portion Q1 of the electronic switching device 1A is turned off, and the other switch portion Q14 of the other electronic switch device 1B is turned on. Further, in the example of Fig. 10, at time t50, the control unit 5 of the electronic switching device 1A has received the opening control instruction from the sensor unit 31. Moreover, the control unit 5 of the other electronic switching device 1B is before the time point t50, and the signal level of the detecting signal S10 becomes the L level from the H level, that is, the time corresponding to the half cycle of the alternating voltage Vac, that is, The normal processing of turning on the switch unit Q1 is repeated. For example, the control unit 5 of the other electronic switching device 1B detects the signal level of the signal S10 from the H level to the L level at the time t48 before the time t50, from the time point t49 after the time point t48 to the time point t50. , the switch portion Q1 is turned on. Then, the control unit 5 of the other electronic switch device 1B performs the first process only once after the time t50.

In other words, the control unit 5 of the other electronic switching device 1B detects that the signal level of the signal S10 is from the H level to the L level at the time t51 after the time t50, from the time point t52 after the time point t51 to the time point t53. The first process is executed. Here, in the example of Fig. 10, the on-time of the switching portion Q1 of the first process is, for example, 300 [ms]. After the time point t53, the other switch portion Q14 is turned off.

Here, the control unit 5 of the electronic switching device 1A calculates the predetermined time every time the signal level of the detection signal S10 is switched from the L level to the H level. Then, the control unit 5 of the electronic switching device 1A detects that the signal level of the signal S10 is maintained at the H level at the start of the calculation of the predetermined time (for example, 250 [ms]), and determines that the time has been satisfied when the predetermined time has been calculated. condition. Then, when the control unit 5 of the electronic switching device 1A determines that the ON condition has been satisfied, the switch unit Q1 is turned on. In the example of Fig. 10, since the ON condition is satisfied at the time point t54 between the time point t52 and the time point t53, the switch portion Q1 is turned on. In other words, the control unit 5 estimates the timing at which the other switch unit Q14 is switched from the on state to the off state by the ON condition being satisfied.

The configuration (including the modification) of the fourth embodiment can be used in combination with the configuration (including the modification) of the third embodiment as appropriate. (in conclusion)

As described above, the electronic switching device (1) of the first aspect includes the switch unit (Q1), the control unit (5), the voltage monitoring unit (32), and the determination unit (53). The switch unit (Q1) is electrically connected between the AC power source (11) and the load (12), and switches between conduction and non-conduction between the AC power source (11) and the load (12). The control unit (5) controls the switch unit (Q1). The voltage monitoring unit (32) monitors the voltage across the switch unit (Q1), that is, the voltage between switches (Vsw). The determination unit (53) determines the switch of the other electronic switching device (1, 1B) electrically connected between the AC power source (11) and the load (12) based on the monitoring result of the voltage monitoring unit (32). The part (Q1) is the operating state of the other switch parts (Q14).

According to this configuration, the control unit (5) can control the switch unit (Q1) in consideration of the operation state of the other switch unit (Q14). That is to say, according to this configuration, there is an advantage that it is possible to perform control that is less likely to compete with the control of the other electronic switching device (1).

The electronic switching device (1) of the ninth aspect is the first aspect, and the determining portion (53) is configured as follows. In other words, the determination unit (53) is configured to determine at least the other switch unit (Q14) based on the control state of the switch unit (Q1) of the control unit (5) and the monitoring result of the voltage monitoring unit (32). The state of action.

According to this configuration, not only the operation state of the other electronic switch devices (1, 1B) but also the state of the electronic switch device can be determined. However, this configuration is not essential, and the determination unit (53) may be configured to determine only based on the monitoring result of the voltage monitoring unit (32).

The electronic switching device (1) of the tenth aspect is like the first aspect or the ninth aspect, and the determining portion (53) is configured as follows. In other words, the determination unit (53) is configured such that the pulse width (W1), which is the length of the reference 値 (Vth10) or more, or the time less than the reference 値 (Vth10), is based on the magnitude of the inter-switch voltage (Vsw). The operation state of the other switch unit (Q14) is determined.

According to this configuration, the operation state of the other switch unit (Q14) can be determined without complicated calculation processing. However, this configuration is not essential, and the determination unit (53) is configured to be determined based on the effective 値 (average 値) of the inter-switch voltage Vsw for a certain period of time.

The electronic switching device (1) of the eleventh aspect is like any one of the first aspect, the ninth aspect, and the tenth aspect, wherein the electronic switching device (1) further includes a power supply unit (43) and a feeding circuit (430). The power supply unit (43) is electrically connected to the switch unit (Q1), and generates a control voltage of the control unit (5) by supplying electric power from the AC power supply (11). The feed circuit (430) is electrically connected between the switch unit (Q1) and the power supply unit (43), and supplies power supply when the magnitude of the voltage (Vsw) between the switches is equal to or greater than a predetermined value. Go to the power supply unit (43).

According to this configuration, the current converter is not necessarily required, and the control voltage can be secured when the load (12) is energized, so that the size can be reduced. However, this configuration is not essential, and the electronic switching device (1) may be configured to include a current converter to ensure a control voltage.

The electronic switching device (1) of the twelfth aspect is like any one of the first aspect, the ninth aspect to the eleventh aspect, wherein the control unit (5) is configured to receive the operation of the switch unit (Q1) When the state is set to the ON control instruction for the ON state, the operation state of the switch unit (Q1) is set to the ON state. The open state of the switch unit (Q1) is a state in which electric power is supplied from the AC power source (11) to the load (12). The control unit (5) is configured to receive the opening control instruction and to delay the process of setting the switch unit (Q1) to the on state when the determination unit (53) determines that the operation state of the other switch unit (Q14) is the on state.

According to this configuration, the switch unit (Q1) becomes difficult to be simultaneously turned on with the other switch units (Q14). That is to say, according to this configuration, it is possible to perform control that is difficult to compete with the control of the other electronic switching devices (1, 1B). However, this configuration is not essential, and the control unit (5) may delay the process of setting the switch unit (Q1) to the on state when the above conditions are satisfied. The electronic switching device (1) of the thirteenth aspect is similar to the twelfth aspect, wherein the control unit (5) is configured to set the operating state of the switch unit (Q1) to the on state according to the estimated time point. The control unit (5) is configured to estimate the timing at which the operation state of the other switch unit (Q14) is switched from the on state to the off state in accordance with the monitoring result of the voltage monitoring unit (32). The closed state of the other switch unit (Q14) is a state in which the power supply from the AC power source (11) to the load (12) is blocked.

According to this configuration, the operation state of the switch unit (Q1) can be set to the on state without waiting for the operation state of the other switch unit (Q14) to be switched to the off state. That is to say, according to this configuration, it is possible to perform control after the control of the other electronic switching devices (1, 1B). However, this configuration is not essential, and the control unit (5) may not estimate the timing at which the operation state of the other switch unit (Q14) is switched from the on state to the off state.

The electronic switching system (10) according to the fourteenth aspect is a plurality of electronic switching devices (1) including any one of the first aspect and the ninth aspect to the first aspect. A plurality of switch units (Q1) included in the plurality of electronic switch devices (1) are electrically connected in parallel between the AC power source (11) and the load (12).

According to this configuration, there is an advantage that it is possible to perform control in which a plurality of electronic switching devices (1) are less likely to compete with each other.

The electronic switch device 1 and the electronic switch system 10 of the first to fourth embodiments will be described above. However, the first to fourth embodiments described above include the above-described modifications and are only one of the various embodiments of the present invention, and the above-described first to fourth embodiments can be variously designed according to the design and the like as long as the object of the invention can be achieved. change.

1, 1A, 1B, 1C‧‧‧ electronic switchgear
10, 10A‧‧‧Electronic switch system
11‧‧‧AC power supply
101‧‧‧1st connection terminal
102‧‧‧2nd connection terminal
103‧‧‧3rd connection terminal
104‧‧‧4th connection terminal
12‧‧‧ load
2‧‧‧Rectifier
3‧‧‧ Circuit Department
31‧‧‧Sensor Department
32‧‧‧Voltage monitoring department
321‧‧‧1st detection department
322‧‧‧2nd Detection Department
4‧‧‧Power generation block
401‧‧‧Power input terminal
402‧‧‧Power output terminal
41‧‧‧1st feed circuit (feed circuit)
42‧‧‧2nd feeding circuit (feeding circuit)
43‧‧‧Power Supply Department
430‧‧‧feed circuit
44‧‧‧Switching Department
45‧‧‧Regulator
46‧‧‧ Current Limiting Department
47‧‧‧Charging pathway
5‧‧‧Control Department
51‧‧‧Switch Control Department
52‧‧‧Switch Control Department
53‧‧‧Decision Department
C1‧‧‧ capacitor
CS1‧‧‧1st control signal
CS2‧‧‧2nd control signal
D1‧‧‧ diode
Q1‧‧‧Switch Department
Q2‧‧‧Assistance switch department
Q10, Q11, Q12, Q13, Q14‧‧‧ other switch parts
R0‧‧‧ resistance
R1‧‧‧1st resistor
R2‧‧‧2nd resistor
R3‧‧‧3rd resistor
R4‧‧‧4th resistor
R5‧‧‧5th resistor
R6‧‧‧6th resistor
S1a, S1b‧‧‧ surveillance signals
S3‧‧‧Charge detection signal
S10‧‧‧Detection signal
S11‧‧‧1st detection signal
S12‧‧‧2nd detection signal
Vac‧‧‧AC voltage
Vsw‧‧‧Switch-to-switch voltage
Vth1, Vth10‧‧‧ reference value
W1‧‧‧ pulse width
ZD1‧‧‧1st Zener diode
ZD2‧‧‧2nd Zener diode

Fig. 1 is a schematic circuit diagram showing a configuration of an electronic switching device according to a first embodiment of the present invention. Fig. 2 is a schematic circuit diagram showing a configuration of an electronic switch system according to Embodiment 1 of the present invention. Fig. 3 is a timing chart showing the first operation of the electronic switch system of the above. Fig. 4 is a timing chart showing the second operation of the electronic switch system of the above. Fig. 5 is a schematic circuit diagram showing a configuration of an electronic switch system according to a second embodiment of the present invention. Fig. 6 is a schematic circuit diagram showing a configuration of an electronic switching device according to a third embodiment of the present invention. Fig. 7 is an explanatory view showing the operation of the other switch unit of the electronic switch device in the same state in the closed state. Fig. 8 is an explanatory view showing the operation of the other switch unit of the electronic switch device in the same state in the open state. Fig. 9 is an explanatory view showing the operation of the electronic switch device according to the fourth embodiment of the present invention. Fig. 10 is an explanatory view showing an operation of an electronic switch device according to a modification of the fourth embodiment.

1‧‧‧Electronic switchgear

101‧‧‧1st connection terminal

102‧‧‧2nd connection terminal

103‧‧‧3rd connection terminal

2‧‧‧Rectifier

3‧‧‧ Circuit Department

31‧‧‧Sensor Department

32‧‧‧Voltage monitoring department

4‧‧‧Power generation block

401‧‧‧Power input terminal

402‧‧‧Power output terminal

41‧‧‧1st feed circuit (feed circuit)

42‧‧‧2nd feeding circuit (feeding circuit)

43‧‧‧Power Supply Department

44‧‧‧Switching Department

45‧‧‧Regulator

5‧‧‧Control Department

51‧‧‧Switch Control Department

52‧‧‧Switch Control Department

C1‧‧‧ capacitor

Q1‧‧‧Switch Department

Vsw‧‧‧Switch-to-switch voltage

Claims (14)

An electronic switch device characterized by comprising: a switch portion electrically connected between an alternating current power source and a load, and switching between conduction and non-conduction between the alternating current power source and the load; and a control unit that controls the switch portion a voltage monitoring unit that monitors a voltage across the switch unit, that is, a voltage between switches; and a determination unit that determines that the AC power source and the load are electrically connected to each other based on a monitoring result of the voltage monitoring unit The switching portion of the other electronic switching device is also the operating state of the other switching portions. The electronic switch device according to claim 1, further comprising: a power supply unit electrically connected between both ends of the switch unit, and generating a control voltage by supplying power from the alternating current power source; a feeding circuit electrically connected between the two ends of the switch portion, and configured as a path for supplying power between the switch portion and the power supply portion; and a switching portion that can be used for the power supply path The feeding circuit is switched to any one of the two or more feeding circuits; and the switching control unit controls the switching unit according to the waveform of the voltage between the switches, wherein the switching control unit receives the switching control unit from the power supply unit The control voltage is supplied to operate. The electronic switch device according to claim 2, wherein the voltage monitoring unit is electrically connected between the switch unit and the two or more feed circuits. The electronic switching device of claim 2 or 3, wherein: the two or more feeding circuits comprise a first feeding circuit and a second feeding circuit, and the impedance of the first feeding circuit is lower than the second feeding Circuit. The electronic switch device according to claim 2, wherein the switching control unit controls the switching unit based on a length of a time when the voltage between the switches is equal to or greater than a reference value or a time when the reference voltage is not reached. The electronic switching device of claim 5, wherein: the two or more feeding circuits comprise a first feeding circuit and a second feeding circuit, wherein the impedance of the first feeding circuit is lower than the second feeding circuit, the pulse width The length of time when the voltage between the switches is equal to or greater than the reference value. When the pulse width does not reach the threshold value, the switching control unit controls the switching unit to cause the first feeding circuit to be used for the path for supplying power. The electronic switch device according to claim 2 or 3, further comprising: a sensor unit configured to control the switch unit according to an output of the sensor unit. An electronic switching system, comprising: a plurality of electronic switching devices according to any one of claims 2 to 7, wherein the plurality of switching devices of the plurality of electronic switching devices are electrically Connected in parallel between the AC power source and the load, and when the switch portion of the electronic switch device of the plurality of electronic switch devices is turned on, the switch portion of the plurality of electronic switches is non-conducting other electronic components In the switching device, the switching control unit controls the switching unit to switch the feeding circuit for the path for supplying power. The electronic switch device according to claim 1, wherein the determination unit is configured to determine at least the other switch unit based on a control state of the switch unit of the control unit and a monitoring result of the voltage monitoring unit Actuated state. The electronic switch device according to claim 1 or 9, wherein the determination unit is configured to: a pulse width according to a length of a voltage between the switches being a reference value or a value that is less than the reference value, that is, a pulse width, The operation state of the other switch unit is determined. The electronic switch device of claim 1 or 9, further comprising: a power supply unit electrically connected to the switch unit, and generating a control voltage of the control unit by supplying power from the alternating current power source; And the feed circuit is electrically connected between the switch unit and the power supply unit, and when the magnitude of the voltage between the switches is equal to or greater than a predetermined value, the supply power is supplied to the power supply unit. The electronic switch device according to claim 1 or 9, wherein the control unit is configured to receive an operation state in which the switch unit is in an open state in which power is supplied from the AC power source to the load. When the control instruction is turned on, the operation state of the switch unit is set to the open state; and the control unit is configured to determine that the operation state of the other switch unit is when the open control instruction is received. In the on state, the process of delaying the actuation state of the switch portion is set to the on state. The electronic switch device according to claim 12, wherein the control unit is configured to calculate, according to the monitoring result of the voltage monitoring unit, an operation state of the other switch unit to be switched from the open state to the AC power source When the power supply of the load is blocked in the closed state, the operating state of the switch unit is set to the open state according to the estimated time. An electronic switch system, comprising: a plurality of electronic switch devices according to any one of claims 1 and 9 to 13; and a plurality of switch portions of the plurality of electronic switch devices It is electrically connected in series between the AC power source and the load.