CN105307318A - Switching device and load control system - Google Patents
Switching device and load control system Download PDFInfo
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- CN105307318A CN105307318A CN201510106993.5A CN201510106993A CN105307318A CN 105307318 A CN105307318 A CN 105307318A CN 201510106993 A CN201510106993 A CN 201510106993A CN 105307318 A CN105307318 A CN 105307318A
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Abstract
The present invention provides a switching device and a load control system, being able to restrain generation of fault because of false wiring. A polarity switching part (13) is provided with a built-in over current protection circuit (134); when the current output from a first output terminal (132) and a second output terminal (133) is greater than the upper limit value, a stop signal is output to a controller (131) from the over current protection circuit (134); and when the controller (131) receives the stop signal, all the field effect transistors of an H bridge circuit (130) are cut off to stop supply of the output current.
Description
Technical field
The present invention relates to a kind of switching device and load control system, particularly a kind of to the switching device controlled and the load control system using this switching device such as lighting load.
Background technology
As past case, the switching device (reference literature 1 [No. 2012-174513rd, Japanese Laid-Open Patent Publication]) recorded exemplified with document 1.This past case is configured to switch the supply to load electric carried out via power line and cut-out, be installed on be embedded in wall switch enclosure (switchbox) in.
In addition, this past case possesses the control circuit of relay unit and control relay unit.Relay unit has electromagnetic relay and semiconductor relay.Electromagnetic relay as mechanical relay is made up of contact and magnet exciting coil.Contact is set to the closing contact (makecontact) of single channel in power line.Magnet exciting coil and load (ligthing paraphernalia) are arranged in parallel.
Semiconductor relay is made up of opening/closing portion and drive division.Opening/closing portion comprises the semiconductor element by light type, according to whether the light existed from drive division turns on/off (ON/OFF).Drive division comprises the semiconductor element of light emitting-type, carries out luminescence/luminescence stop based on the on/off control signal provided from control circuit.
That is, in the past case of document 1 record, when the switch portion such as touch panel are operated, control circuit carries out control to drive electromagnetic relay to semiconductor relay, the electric power to ligthing paraphernalia carried out supply is switched on or switched off via power line.
In addition, in the past case that document 1 is recorded, the magnet exciting coil of electromagnetic relay is connected to identical power supply via semiconductor relay with load, is therefore not easy the mistake (operation error) producing wiring.But, when the structure that magnet exciting coil connects from other different power supply, there is the worry of the mistake producing wiring.And, when producing the mistake of wiring, likely cause that excessive electric current flows through the path to magnet exciting coil circulating current and switching device breaks down.
Summary of the invention
The present invention is the invention completed in view of the above problems, its object is to suppress the mistake etc. because of wiring to cause the generation of fault.
Switching device of the present invention controls the switching device carrying out the banked relay of opening and closing for circuit to for powering to the load from power supply, and this switching device possesses: power supply unit, and it generates the electric power of the driving of above-mentioned banked relay; Power supply, the above-mentioned electric power generated by above-mentioned power supply unit is supplied to above-mentioned banked relay by it; Operating portion, it accepts operation input; And control part, the aforesaid operations that itself and aforesaid operations portion accept inputs the supply controlling the above-mentioned electric power undertaken by above-mentioned power supply accordingly, and wherein, above-mentioned power supply is configured to the supply stopping output current when output current exceedes set upper limit value.
Load control system involved in the present invention has carrying out the banked relay of opening and closing for what power to the load from power supply for circuit and control the above-mentioned switching device of above-mentioned banked relay.
Accompanying drawing explanation
Fig. 1 is the block diagram of the switching device represented involved by execution mode.
Fig. 2 is the circuit structure diagram of the power supply in execution mode.
Fig. 3 is the stereoscopic figure of execution mode.
Fig. 4 is the stereoscopic figure of the state after the unloading operation handle of execution mode.
Fig. 5 is the sequential chart of the action specification of execution mode.
Fig. 6 is the system construction drawing of the load control system represented involved by execution mode.
Embodiment
Below, the switching device of an execution mode involved in the present invention and the load control system of involved in the present invention execution mode is explained with reference to accompanying drawing.In addition, in the following description, as load exemplified with lighting load, but the kind of load is not limited to lighting load.
As shown in Figure 6, the load control system of present embodiment has switching device 1 and three banked relays 2 (2A, 2B, 2C).Wherein, in the following description, marking the mark of " 2A ", " 2B ", " 2C " when differentiation three banked relays, marking the mark of " 2 " when not distinguishing three banked relays.Similarly, marking the mark of " 4A ", " 4B ", " 4C " when differentiation three lighting loads, marking the mark of " 4 " when not distinguishing three lighting loads.
Banked relay 2 is in the past known, by main contacts 20, relay coil 21, auxiliary contact 22, diode 23,24, a pair signal terminal (the first signal terminal 251, secondary signal terminal 252) etc. form.Main contacts 20 is inserted into and supplies circuit for what power from power supply (AC power 3) to lighting load 4.The public terminal of auxiliary contact 22 is connected in one end of relay coil 21.In addition, the other end of relay coil 21 is connected with the first signal terminal 251.
The switched terminal of one side of auxiliary contact 22 connects the anode of diode 23, and the switched terminal of the opposing party of auxiliary contact 22 connects the negative electrode of diode 24.Auxiliary contact 22 are configured to and main contacts 20 interlock, such as, when main contacts 20 is in open mode (with reference to Fig. 6), the public terminal of auxiliary contact 22 is connected with the switched terminal of diode 23 side, and when main contacts 20 is in closure state, the public terminal of auxiliary contact 22 is connected with the switched terminal of diode 24 side.In addition, the negative electrode of diode 23 and the anode of diode 24 are connected with secondary signal terminal 252.In addition, although the diagram of eliminating, between the anode-cathode of the diode 23 of a side, be inserted with the series circuit (differential circuit) of capacitor and resistance.
When applying direct voltage between to signal terminal (that is, when in the mode making the first signal terminal 251 be high potential compared to secondary signal terminal 252 to when applying direct voltage between the first signal terminal 251 and secondary signal terminal 252), exciting current is with the path flow of first signal terminal 251 → relay coil 21 → auxiliary contact 22 → diode 23 → secondary signal terminal 252, therefore main contacts 20 switches to closure state (that is, main contacts 20 becomes connection) from open mode.When main contacts 20 is connected, with main contacts 20 linkedly auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) be switched to diode 24 side, therefore no longer include in relay coil 21 exciting current flowing.But, because banked relay 2 is relays of the self-locking type with permanent magnet, though therefore exciting current stop after main contacts 20 also maintain closure state.
In addition, when applying the direct voltage of opposite polarity between to signal terminal (that is, when to make secondary signal terminal 252 compared to the first signal terminal 251 mode that is high potential (opposite polarity) to when applying direct voltage between the first signal terminal 251 and secondary signal terminal 252), exciting current is with the path flow of secondary signal terminal 252 → diode 24 → auxiliary contact 22 → relay coil 21 → the first signal terminal 251, therefore main contacts 20 switches to open mode (that is, main contacts 20 becomes disconnection) from closure state.When main contacts 20 disconnects, with main contacts 20 linkedly auxiliary contact 22 be switched to diode 23 side, therefore no longer include in relay coil 21 exciting current flowing.But, even if main contacts 20 also maintains open mode after exciting current stops.
When banked relay 2 (main contacts 20) is connected, supply alternating electromotive force from AC power 3 via banked relay 2 pairs of lighting loads 4, thus lighting load 4 starts (lighting).In addition, when banked relay 2 (main contacts 20) disconnects, no longer supply alternating electromotive force from AC power 3 via banked relay 2 pairs of lighting loads 4, lighting load 4 is closed (extinguishing).But, in the load control system of present embodiment, for from AC power 3 to lighting load 4A, 4B, 4C power each for being inserted with switch 5A, 5B, 5C dividually with banked relay 2A, 2B, 2C phase respectively in circuit.These switches 5A, 5B, 5C are such as the switch on wall imbedding configuration in wall, are configured to carry out opening and closing to contact when operating grip is operated.That is, when banked relay 2 is in on-state, operated by switch 5A, 5B, 5C, each lighting load 4A, 4B, 4C are activated respectively or close.In addition, when the contact of switch 5A, 5B, 5C is in closed, lighting load 4 and being switched on or switched off of banked relay 2 correspondingly start or close.
Then, the switching device 1 of present embodiment is described.
As shown in Figure 1, the switching device 1 of present embodiment possesses control part 10, operating portion 11, power supply 12, power supply unit 15, constant voltage circuit 16 and display part 17.
Control part 10 is made up of microcontroller (PIC16F1503 etc. of such as MicrochipTechnologyInc.) and the program that performs in the microcontroller.
Power supply unit 15 is configured to the alternating electromotive force supplied from AC power 3 (such as effective value is the alternating electromotive force of 100 ~ 120 volts) to be converted to direct current power (such as the direct current power of 24 volts).Fixing direct voltage is supplied to power supply 12 as output voltage by power supply unit 15.This power supply unit 15 is such as realized by the switching power circuit of in the past known insulated type.
Constant voltage circuit 16 is configured to the output voltage of power supply unit 15 (direct voltages of 24 volts) is reduced to the direct voltage of low-voltage (such as 5 volts) and makes its stabilisation.This constant voltage circuit 16 is such as realized by the past known buck circuit and three terminal adjusters.In addition, in the following description, the output voltage of constant voltage circuit 16 is called control voltage.Control voltage is imported into the power supply terminal of control part 10.
Operating portion 11 is made up of the push-button switch of instantaneous (momentary) type, and its two ends are applied in control voltage, and one end of hot side is connected with an input port of control part 10.That is, when operating portion 11 is not operated, the input port of control part 10 is high level (control voltage), and when operating portion 11 is operated, the input port of control part 10 is low level.Therefore, control part 10 becomes low level by above-mentioned input port and receives operation signal from operating portion 11.
The green LED (green LED) of to be red red light emitting diodes (red LED) and glow color be green that display part 17 such as has glow color.The negative electrode of red LED is connected with an output port of control part 10, and the anode of red LED is applied in control voltage.In addition, the negative electrode of green LED is connected with another output port of control part 10, and the anode of green LED is applied in control voltage.That is, the red LED of display part 17 and green LED are activated respectively by control part 10 or close (light or extinguish).
Power supply 12 is made up of polarity switching part 13 and trigger unit 14.Polarity switching part 13 is made up of H bridge drive IC (such as the BD6231 etc. of ROHM Inc.) as shown in Figure 2.This H bridge drive IC has the H-bridge circuit 130 comprising four field-effect transistors and the controller 131 controlling H-bridge circuit 130.H-bridge circuit 130 is transfused to the output voltage (direct voltages of 24 volts) of power supply unit 15.The lead-out terminal (the first lead-out terminal) 132 of the side in two lead-out terminals 132,133 of H-bridge circuit 130 (polarity switching part 13) is connected with the first signal terminal 251 of relay coil 21 side of banked relay 2, and the lead-out terminal (the second lead-out terminal) 133 of the opposing party is connected with trigger unit 14.The control signal that controller 131 is configured to according to exporting from two output ports (the first output port 134, second output port 135) of control part 10 drives H-bridge circuit 130.Namely, when outputing control signal from the first output port 134 of control part 10, the polarity (direction) that it is high potential that controller 131 drives H-bridge circuit 130 to make with the second lead-out terminal 133 be connected with trigger unit 14 applies the output voltage of power supply unit 15.In addition, when outputing control signal from the second output port 135 of control part 10, the polarity (direction) that it is high potential that controller 131 drives H-bridge circuit 130 to make with the first lead-out terminal 132 be connected with banked relay 2 applies the output voltage of power supply unit 15.Polarity switching part 13 is configured to the polarity switching the voltage between the first output port 251 and the second output port 252 based on the constant voltage supplied from power supply unit 15.
As shown in Figure 2, trigger unit 14 is made up of multiple (in illustrated example being three) photoelectricity three terminal bidirectional alternating-current switch coupler (Japanese: Off ォ ト ト ラ イ ア ッ Network カ プ ラ) 14A, 14B, 14C.Photoelectricity three terminal bidirectional alternating-current switch coupler 14A, 14B, 14C have light-emitting component (LED) 140 and photoelectricity three terminal bidirectional alternating-current switch 141.The positive pole (anode) of light-emitting component 140 is applied in control voltage (DC5V), and the negative pole (negative electrode) of light-emitting component 140 connects respectively from three different output ports of control part 10 separately.That is, about each photoelectricity three terminal bidirectional alternating-current switch coupler 14A, 14B, 14C, when each output port of control part 10 becomes low level, light-emitting component 140 is luminous, and photoelectricity three terminal bidirectional alternating-current switch 141 is triggered and conducting.Once photoelectricity three terminal bidirectional alternating-current switch 141 becomes conducting state, as long as have current flowing in photoelectricity three terminal bidirectional alternating-current switch 141, just independently maintain the conducting state of photoelectricity three terminal bidirectional alternating-current switch 141 with the level of the output port of control part 10.During photoelectricity three terminal bidirectional alternating-current switch 141 is in conducting, exciting current can be supplied with the polarity switched by polarity switching part 13 (direction) from power supply unit 15 pairs of banked relays 2.
Then, outward appearance and the structure of switching device 1 are described with reference to Fig. 3 and Fig. 4.
The switching device 1 of present embodiment is imbedded and is configured at construction material (such as wall) under the state being installed on installing frame 200.
Installing frame 200 is such as the special installing frame of wide handle (widehandle) shape switch at Japanese Industrial Standards' Plays.Have the fenestra of rectangle in the centre of installing frame 200, the main body 100 of switching device 1 is embedded in this fenestra.On the sidewall of the left and right sides being positioned at fenestra, the embedded hole 201 being a group with two is respectively provided with three groups respectively along long side direction.In addition, installation sheet 202 is respectively arranged with in the both sides up and down of fenestra.In each installation sheet 202, be provided with the elongated hole 203 inserted for box screw in centre, be respectively arranged with circular screw insertion hole 204 in the left and right sides of elongated hole 203.This installing frame 200 is in the past known, utilizes box to be screwed switch enclosure in imbedding wall, or uses clamping metal fittings to be fixed on wall slab (plasterboard etc.).
Switching device 1 is made up of the main body 100 of rectangular box and operating grip 110, and this main body 100 is made up of synthetic resin forming body, and this operating grip 110 is installed on the front surface of main body 100 in the mode that can shake.Multiple printed circuit board (PCB)s, multiple quick connection terminal (without screw terminal) etc. is accommodated with in main body 100.These printed circuit board (PCB)s are provided with the circuit block (microcontroller, H bridge drive IC etc.) of the control part 10 shown in pie graph 1 and Fig. 2, operating portion 11, power supply 12 etc.In addition, display part 17 (red LED and green LED) is installed in the left part of foremost printed circuit board (PCB).Further, at the central portion of foremost printed circuit board (PCB), operating portion 11 (push-button switch) is installed.
Position relative with display part 17 in the antetheca of main body 100 is formed through the fenestra 101 of rectangle.That is, the redness that sends of display part 17 and green light are irradiated to the front of main body 100 by fenestra 101.
In addition, position relative with operating portion 11 in the antetheca of main body 100, is provided with the operating sheet 102 of T font in the mode that can bend.That is, when operating sheet 102 is rearward bending, the operating portion 11 (push-button switch) being installed on foremost printed circuit board (PCB) is switched on by operating sheet 102.
Further, at the end place in the left side of the antetheca of main body 100, a pair axle portion 103 is provided with in the vertical direction abreast.The fore-end in these axle portions 103 is formed as cylindric, and the bearing portion of operating grip 110 is installed on these axle portions 103 in the mode that can rotate.
In addition, in the side of the left and right sides of main body 100, the pawl 104 chimeric with the embedded hole 201 of installing frame 200 is configured to arrange at spaced intervals along the vertical direction respectively.
As shown in Figure 3, operating grip 110 is formed as the rectangular plate-like of lengthwise by synthetic resin material.The centre of the left end of the rear surface of operating grip 110 is provided with above-mentioned bearing portion.And bearing portion is installed on axle portion 103, thus operating grip 110 can relative to main body 100 with axle portion 103 for fulcrum shakes.That is, when carrying out pressing operation from front to operating grip 110, operating grip 110 rearward shakes for fulcrum with axle portion 103, makes the operating sheet 102 of main body 100 rearward bending and operating portion 11 is connected.
In addition, the fenestra 111 of rectangle is provided with in the centre of the left end of operating grip 110.Further, in this fenestra 111, be embedded with the lid 112 formed by the synthetic resin material (such as acrylic resin etc.) with light transmission.That is, after the fenestra 101 of the light that sends of display part 17 by main body 100, forwards irradiated by the fenestra 111 of operating grip 110 and lid 112.
Then, the action of the switching device 1 of present embodiment is described with reference to the sequential chart of Fig. 5 and Fig. 1, Fig. 2.In addition, the horizontal axis representing time t in Fig. 5, the longitudinal axis represent voltage V.In addition, the A in Fig. 5 represents the output voltage of the first lead-out terminal 132 of polarity switching part 13, and the B in Fig. 5 represents the output voltage of the second lead-out terminal 133 of polarity switching part 13.C, D, E in Fig. 5 represent the input voltage (namely from the voltage that control part 10 inputs) of three photoelectricity three terminal bidirectional alternating-current switch couplers 14A, 14B, 14C respectively, F, G, H represent respectively be applied to three banked relays 2A, 2B, 2C signal terminal between the signal voltage of (namely between the first signal terminal 251 and secondary signal terminal 252).
At this, if whole switch 5 is all in connection, and whole banked relays 2 is all in disconnection.Therefore, in this condition, whole lighting loads 4 is all in extinguishing.In addition, in switching device 1, control part 10 makes display part 17 demonstrate whole lighting loads 4 to be all in extinguishing by only lighting green LED.
When operating grip 110 is carried out pressing operation in the above-described state, control part 10 receives operation signal from operating portion 11.The control part 10 receiving operation signal controls polarity switching part 13 and switches to and be positive pole and the polarity (t=t0) being negative pole with the second lead-out terminal 133 with the first lead-out terminal 132.Then, control part 10 makes the input terminal of photoelectricity three terminal bidirectional alternating-current switch coupler 14A be low level, and applying with relay coil 21 side between the signal terminal thus to banked relay 2A is positive signal voltage (direct voltages of 24 volts).That is, the voltage (C with reference to Fig. 5) being input to photoelectricity three terminal bidirectional alternating-current switch coupler 14A is switched to low level from high level by control part 10.Thus, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14A becomes conducting.Its result, signal voltage (direct voltages of 24 volts) is applied between first signal terminal 251 of banked relay 2A and secondary signal terminal 252 (t=t1) for the mode of high potential (with reference to the F of Fig. 5) to make the first signal terminal 251.
In banked relay 2A, by being applied in above-mentioned signal voltage, exciting current flows through relay coil 21, and therefore main contacts 20 is connected and auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) are switched to diode 24 side.As long as banked relay 2A (main contacts 20) connects, just from AC power 3, via banked relay 2A, to lighting load 4A supply alternating electromotive force, lighting load 4A lights.In addition, when the auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) of banked relay 2A are switched to diode 24 side, no longer include exciting current flowing, therefore the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14A ends.Like this, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14A and auxiliary contact 22 interlock of banked relay 2A, as a result, with main contacts 20 interlock of banked relay 2A.That is, the control part 10 couples of banked relay 2A apply the signal voltage (F with reference to Fig. 5) (t=t1 ') of pulse types.Thus, control part 10 controls power supply 12, makes power supply 12 only to switch in the short time of the time of closure state from open mode and supply electric power not being shorter than banked relay 2A.
After connection banked relay 2A, control part 10 makes the input terminal of photoelectricity three terminal bidirectional alternating-current switch coupler 14B be low level, and applying with relay coil 21 side between the signal terminal thus to banked relay 2B is positive signal voltage (direct voltages of 24 volts).That is, after connection banked relay 2A, the voltage (D with reference to Fig. 5) being input to photoelectricity three terminal bidirectional alternating-current switch coupler 14B is switched to low level from high level by control part 10.Thus, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14B becomes conducting.Its result, signal voltage (direct voltages of 24 volts) is applied between first signal terminal 251 of banked relay 2B and secondary signal terminal 252 (t=t2) for the mode of high potential (with reference to the G of Fig. 5) to make the first signal terminal 251.
In banked relay 2B, by being applied in above-mentioned signal voltage, exciting current flows through relay coil 21, and therefore main contacts 20 is connected and auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) are switched to diode 24 side.As long as banked relay 2B (main contacts 20) connects, just from AC power 3, via banked relay 2B, to lighting load 4B supply alternating electromotive force, lighting load 4B lights.In addition, when the auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) of banked relay 2B are switched to diode 24 side, no longer include exciting current flowing, therefore the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14B ends.Like this, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14B and auxiliary contact 22 interlock of banked relay 2B, as a result, with main contacts 20 interlock of banked relay 2B.That is, control part 10, for banked relay 2B, also applies the signal voltage (with reference to the G of Fig. 5) (t=t2 ') of pulse type in the same manner as banked relay 2A.Thus, control part 10 controls power supply 12, makes power supply 12 only to switch in the short time of the time of closure state from open mode and supply electric power not being shorter than banked relay 2B.
After connection banked relay 2B, control part 10 makes the input terminal of photoelectricity three terminal bidirectional alternating-current switch coupler 14C be low level, and applying with relay coil 21 side between the signal terminal thus to banked relay 2C is positive signal voltage (direct voltages of 24 volts).That is, after connection banked relay 2B, the voltage (E with reference to Fig. 5) being input to photoelectricity three terminal bidirectional alternating-current switch coupler 14C is switched to low level from high level by control part 10.Thus, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14C becomes conducting.Its result, signal voltage (direct voltages of 24 volts) is applied between first signal terminal 251 of banked relay 2C and secondary signal terminal 252 (t=t3) for the mode of high potential (with reference to the H of Fig. 5) to make the first signal terminal 251.
In banked relay 2C, by being applied in above-mentioned signal voltage, exciting current flows through relay coil 21, and therefore main contacts 20 is connected and auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) are switched to diode 24 side.As long as banked relay 2C (main contacts 20) connects, just from AC power 3, via banked relay 2C, to lighting load 4C supply alternating electromotive force, lighting load 4C lights.In addition, when the auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) of banked relay 2C are switched to diode 24 side, no longer include exciting current flowing, therefore the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14C ends.Like this, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14C and auxiliary contact 22 interlock of banked relay 2C, as a result, with main contacts 20 interlock of banked relay 2C.That is, control part 10, for banked relay 2C, also applies the signal voltage (H with reference to Fig. 5) of pulse type in the same manner as banked relay 2A, 2B.Thus, control part 10 controls power supply 12, makes power supply 12 only to switch in the short time of the time of closure state from open mode and supply electric power not being shorter than banked relay 2C.
Further, control part 10, after making whole banked relay 2 connections, controls polarity switching part 13 and makes the first lead-out terminal 132 and the second lead-out terminal 133 be same potential (t=t4).In addition, control part 10 only lights red LED, makes display part 17 demonstrate whole lighting loads 4 thus and all lights.
When being all in whole lighting loads 4 that under the state lighted, operating grip 110 is carried out pressing operation, control part 10 receives operation signal from operating portion 11.The control part 10 receiving operation signal controls polarity switching part 13 and switches to and be positive pole and the polarity (t=t5) being negative pole with the first lead-out terminal 132 with the second lead-out terminal 133.Then, control part 10 makes the input terminal of photoelectricity three terminal bidirectional alternating-current switch coupler 14A be low level, and applying with relay coil 21 side between the signal terminal thus to banked relay 2A is negative signal voltage (direct voltages of 24 volts).That is, the voltage (C with reference to Fig. 5) being input to photoelectricity three terminal bidirectional alternating-current switch coupler 14A is switched to low level from high level by control part 10.Thus, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14A becomes conducting.Its result, signal voltage (direct voltages of 24 volts) is applied between first signal terminal 251 of banked relay 2A and secondary signal terminal 252 (t=t6) for the mode of high potential (with reference to the F of Fig. 5) to make secondary signal terminal 252.
In banked relay 2A, by being applied in above-mentioned signal voltage, reverse exciting current flows through relay coil 21, and therefore main contacts 20 disconnects and auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) are switched to diode 23 side.As long as banked relay 2A (main contacts 20) disconnects, with regard to no longer from AC power 3 pairs of lighting load 4A supply alternating electromotive forces, lighting load 4A extinguishes.In addition, when the auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) of banked relay 2A are switched to diode 23 side, no longer include reverse exciting current flowing, therefore the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14A ends.Like this, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14A and auxiliary contact 22 interlock of banked relay 2A, as a result, with main contacts 20 interlock of banked relay 2A.That is, the control part 10 couples of banked relay 2A apply the signal voltage (F with reference to Fig. 5) (t=t6 ') of pulse types.Thus, control part 10 controls power supply 12, makes power supply 12 only to switch in the short time of the time of open mode from closure state and supply electric power not being shorter than banked relay 2A.
After disconnection banked relay 2A, control part 10 makes the input terminal of photoelectricity three terminal bidirectional alternating-current switch coupler 14B be low level, and applying with relay coil 21 side between the signal terminal thus to banked relay 2B is negative signal voltage (direct voltages of 24 volts).That is, after disconnection banked relay 2A, the voltage (D with reference to Fig. 5) being input to photoelectricity three terminal bidirectional alternating-current switch coupler 14B is switched to low level from high level by control part 10.Thus, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14B becomes conducting.Its result, signal voltage (direct voltages of 24 volts) is applied between first signal terminal 251 of banked relay 2B and secondary signal terminal 252 (t=t7) for the mode of high potential (with reference to the G of Fig. 5) to make secondary signal terminal 252.
In banked relay 2B, by being applied in above-mentioned signal voltage, reverse exciting current flows through relay coil 21, and therefore main contacts 20 disconnects and auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) are switched to diode 23 side.As long as banked relay 2B (main contacts 20) disconnects, with regard to no longer from AC power 3 pairs of lighting load 4B supply alternating electromotive forces, lighting load 4B extinguishes.In addition, when the auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) of banked relay 2B are switched to diode 23 side, no longer include reverse exciting current flowing, therefore the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14B ends.Like this, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14B and auxiliary contact 22 interlock of banked relay 2B, as a result, with main contacts 20 interlock of banked relay 2B.That is, control part 10, for banked relay 2B, also applies the signal voltage (with reference to the G of Fig. 5) (t=t7 ') of pulse type in the same manner as banked relay 2A.Thus, control part 10 controls power supply 12, makes power supply 12 only to switch in the short time of the time of open mode from closure state and supply electric power not being shorter than banked relay 2B.
After disconnection banked relay 2B, control part 10 makes the input terminal of photoelectricity three terminal bidirectional alternating-current switch coupler 14C be low level, and applying with relay coil 21 side between the signal terminal thus to banked relay 2C is negative signal voltage (direct voltages of 24 volts).That is, the voltage (E with reference to Fig. 5) being input to photoelectricity three terminal bidirectional alternating-current switch coupler 14C is switched to low level from high level by control part 10.Thus, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14C becomes conducting.Its result, signal voltage (direct voltages of 24 volts) is applied between first signal terminal 251 of banked relay 2C and secondary signal terminal 252 (t=t8) for the mode of high potential (with reference to the H of Fig. 5) to make secondary signal terminal 252.
In banked relay 2C, by being applied in above-mentioned signal voltage, reverse exciting current flows through relay coil 21, and therefore main contacts 20 disconnects and auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) are switched to diode 23 side.As long as banked relay 2C (main contacts 20) disconnects, with regard to no longer from AC power 3 pairs of lighting load 4C supply alternating electromotive forces, lighting load 4C extinguishes.In addition, when the auxiliary contact 22 (i.e. the public terminal of auxiliary contact 22) of banked relay 2C are switched to diode 23 side, no longer include reverse exciting current flowing, therefore the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14C ends.Like this, the photoelectricity three terminal bidirectional alternating-current switch 141 of photoelectricity three terminal bidirectional alternating-current switch coupler 14C and auxiliary contact 22 interlock of banked relay 2C, as a result, with main contacts 20 interlock of banked relay 2C.That is, control part 10, for banked relay 2C, also applies the signal voltage (H with reference to Fig. 5) of pulse type in the same manner as banked relay 2A, 2B.Thus, control part 10 controls power supply 12, makes power supply 12 only to switch in the short time of the time of open mode from closure state and supply electric power not being shorter than banked relay 2C.
Further, control part 10, after making whole banked relay 2 disconnections, controls polarity switching part 13 and makes the first lead-out terminal 132 and the second lead-out terminal 133 be same potential (t=t9).In addition, control part 10 only lights green LED, makes display part 17 demonstrate whole lighting loads 4 thus and all extinguishes.
At this, the signal terminal (signal terminal be connected with relay coil 21) of a side of each banked relay 2A, 2B, 2C is connected with the public terminal (the first lead-out terminal 132 of polarity switching part 13) of switching device 1.In addition, the signal terminal (signal terminal be connected with diode 23,24) of the opposing party of each banked relay 2A, 2B, 2C is connected with the lead-out terminal of each photoelectricity three terminal bidirectional alternating-current switch coupler 14A, 14B, 14C of trigger unit 14 respectively.
But, there is following possibility: due to operation error during wiring installation, the public terminal mis-wired of such as switching device 1 is to the lead-out terminal of some photoelectricity three terminal bidirectional alternating-current switch coupler 14A, 14B, 14C of trigger unit 14.If switching device 1 carries out action under the state of mis-wired like this, then excessive electric current is likely caused to flow through trigger unit 14 and polarity switching part 13 and switching device 1 breaks down.That is, the resistance value of the circuit be connected between the public terminal of switching device 1 and the lead-out terminal of some photoelectricity three terminal bidirectional alternating-current switch coupler 14A, 14B, 14C of trigger unit 14 is lower than the resistance value of the conductive component forming banked relay 2, therefore causes excessive electric current to flow through power supply 12.
On the other hand, the power supply 12 in the switching device 1 of present embodiment is configured to the supply stopping output current when output current exceedes higher limit.That is, form the H bridge drive IC of polarity switching part 13 to protect IC from the injury of the abnormal current such as earth current, short circuit current, and be built-in with circuit overcurrent protection 134 (with reference to Fig. 2).Then, when the electric current exported from the first lead-out terminal 132 and the second lead-out terminal 133 exceedes higher limit, stop signal is exported from circuit overcurrent protection 134 to controller 131.Controller 131, when receiving above-mentioned stop signal, makes whole field-effect transistor cut-off of H-bridge circuit 130 stop the supply of output current.Its result, excessive electric current can not flow continuously through switching device 1, therefore, it is possible to suppress the mistake etc. because of wiring to cause the generation of the fault of switching device 1.In addition, also can replace the circuit overcurrent protection 134 being built in H bridge drive IC, and in power supply 12, possess the circuit overcurrent protection of the supply stopping output current when output current exceedes higher limit.
As mentioned above, the switching device 1 of present embodiment controls the switching device carrying out the banked relay 2 of opening and closing for circuit to for powering from power supply (AC power 3) to load (lighting load 4).The switching device 1 of present embodiment possesses: power supply unit 15, and it generates the electric power of the driving of banked relay 2; Power supply 12, the above-mentioned electric power generated by power supply unit 15 is supplied to banked relay 2 by it; And operating portion 11, it accepts operation input.In addition, the switching device 1 of present embodiment possesses control part 10, and the aforesaid operations that this control part 10 and operating portion 11 accept inputs the supply controlling the above-mentioned electric power undertaken by power supply 12 accordingly.Power supply 12 is configured to the supply stopping output current when output current exceedes set upper limit value.
In addition, the load control system of present embodiment has: banked relay 2, and it is to carrying out opening and closing for what power from power supply (AC power 3) to load (lighting load 4) for circuit; And switching device 1, it controls banked relay 2.
The switching device 1 of present embodiment and load control system are formed as described above, and excessive electric current can not flow continuously through switching device 1, therefore, it is possible to suppress the mistake etc. because of wiring to cause the generation of the fault of switching device 1.
Obviously known according to above-described execution mode, the switching device (1) of first method involved in the present invention controls the switching device carrying out the banked relay (2) of opening and closing for circuit to powering from power supply (AC power 3) to load (lighting load 4).Switching device (1) possesses: power supply unit (15), and it generates the electric power of the driving of above-mentioned banked relay (2); Power supply (12), the above-mentioned electric power generated by above-mentioned power supply unit (15) is supplied to above-mentioned banked relay (2) by it; And operating portion (11), it accepts operation input.Switching device (1) possesses control part (10), and the aforesaid operations that this control part (10) and aforesaid operations portion (11) accept inputs the supply controlling the above-mentioned electric power undertaken by above-mentioned power supply (12) accordingly.Above-mentioned power supply (12) is configured to the supply stopping output current when output current exceedes set upper limit value.
In the switching device (1) of second method involved in the present invention, in first method, above-mentioned power supply (12) possesses above-mentioned pair of output (the first lead-out terminal 132, second lead-out terminal 133) for being electrically connected respectively with a pair signal terminal (the first signal terminal 251, secondary signal terminal 252) of above-mentioned banked relay (2).Above-mentioned power supply (12) possesses controller (131), and this controller (131) is by supplying above-mentioned output current to the output voltage applying above-mentioned power supply unit (15) between above-mentioned pair of output (the first lead-out terminal 132, second lead-out terminal 133) from above-mentioned pair of output (the first lead-out terminal 132, second lead-out terminal 133).Above-mentioned power supply (12) possesses circuit overcurrent protection (134).Above-mentioned circuit overcurrent protection (134) is configured to export stop signal when above-mentioned output current exceedes the higher limit of afore mentioned rules to above-mentioned controller (131).Above-mentioned controller (131) is configured to the supply stopping above-mentioned output current when receiving above-mentioned stop signal.
In the switching device (1) of Third Way involved in the present invention, in second method, above-mentioned power supply unit (15) is configured to export fixing direct voltage and is used as above-mentioned output voltage.
In the switching device (1) of fourth way involved in the present invention, in second method or Third Way, the higher limit of afore mentioned rules be resistance value than above-mentioned banked relay (2) above-mentioned a pair signal terminal (the first signal terminal 251, secondary signal terminal 252) between the low circuit of resistance be connected between above-mentioned pair of output (the first lead-out terminal 132, second lead-out terminal 133) when above-mentioned output current value more than.
The load control system of the 5th mode involved in the present invention has: banked relay (2), and it is to carrying out opening and closing for what power from power supply (AC power 3) to load (lighting load 4) for circuit; And the switching device (1) of either type in first method ~ fourth way, it controls banked relay (2).
Form switching device (1) and load control system as described above, therefore excessive electric current can not flow continuously through switching device (1), therefore, it is possible to suppress the mistake etc. because of wiring to cause the generation of the fault of switching device (1).
Claims (5)
1. a switching device, control the banked relay carrying out opening and closing for circuit for powering to the load from power supply, the feature of this switching device is to possess:
Power supply unit, it generates the electric power of the driving of above-mentioned banked relay;
Power supply, the above-mentioned electric power generated by above-mentioned power supply unit is supplied to above-mentioned banked relay by it;
Operating portion, it accepts operation input; And
Control part, the aforesaid operations that itself and aforesaid operations portion accept inputs the supply controlling the above-mentioned electric power undertaken by above-mentioned power supply accordingly,
Wherein, above-mentioned power supply is configured to the supply stopping output current when output current exceedes set upper limit value.
2. switching device according to claim 1, is characterized in that,
Above-mentioned power supply possesses:
For pair of output be electrically connected respectively with a pair signal terminal of above-mentioned banked relay;
Controller, it is by coming from the above-mentioned output current of above-mentioned pair of output supply to the output voltage applying above-mentioned power supply unit between above-mentioned pair of output; And
Circuit overcurrent protection,
Wherein, above-mentioned circuit overcurrent protection is configured to export stop signal when above-mentioned output current exceedes the higher limit of afore mentioned rules to above-mentioned controller,
Above-mentioned controller is configured to the supply stopping above-mentioned output current when receiving above-mentioned stop signal.
3. switching device according to claim 2, is characterized in that,
Above-mentioned power supply unit is configured to export fixing direct voltage and is used as above-mentioned output voltage.
4. the switching device according to Claims 2 or 3, is characterized in that,
The higher limit of afore mentioned rules be resistance value than above-mentioned banked relay above-mentioned a pair signal terminal between the low circuit of resistance be connected between above-mentioned pair of output when above-mentioned output current value more than.
5. a load control system, is characterized in that, has:
Banked relay, it is to carrying out opening and closing for what power to the load from power supply for circuit; And
Switching device according to any one in Claims 1 to 4, it controls above-mentioned banked relay.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014117783A JP2015230879A (en) | 2014-06-06 | 2014-06-06 | Switch device and load control system |
| JP2014-117783 | 2014-06-06 |
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| Publication Number | Publication Date |
|---|---|
| CN105307318A true CN105307318A (en) | 2016-02-03 |
| CN105307318B CN105307318B (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510106993.5A Active CN105307318B (en) | 2014-06-06 | 2015-03-11 | Switching device and load control system |
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| Country | Link |
|---|---|
| JP (1) | JP2015230879A (en) |
| CN (1) | CN105307318B (en) |
| TW (1) | TWI545609B (en) |
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| CN109756414A (en) * | 2017-11-03 | 2019-05-14 | 福州百益百利自动化科技有限公司 | Quick direct dialing system and method based on social networks |
| CN110612635A (en) * | 2017-05-16 | 2019-12-24 | 松下知识产权经营株式会社 | Power storage system and stop control system |
| CN111837212A (en) * | 2018-01-29 | 2020-10-27 | 松下知识产权经营株式会社 | Switch device, switch system, and program |
| CN112437966A (en) * | 2018-07-31 | 2021-03-02 | 松下知识产权经营株式会社 | Control system and circuit breaking system |
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- 2015-03-11 CN CN201510106993.5A patent/CN105307318B/en active Active
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| CN111837212A (en) * | 2018-01-29 | 2020-10-27 | 松下知识产权经营株式会社 | Switch device, switch system, and program |
| CN111837212B (en) * | 2018-01-29 | 2023-01-13 | 松下知识产权经营株式会社 | Switch device, switch system, and recording medium |
| CN112437966A (en) * | 2018-07-31 | 2021-03-02 | 松下知识产权经营株式会社 | Control system and circuit breaking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105307318B (en) | 2018-06-19 |
| TWI545609B (en) | 2016-08-11 |
| TW201603092A (en) | 2016-01-16 |
| JP2015230879A (en) | 2015-12-21 |
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