CN203350409U - Switch detection circuit and dual-purpose intelligent lamp comprising switch detection circuit - Google Patents
Switch detection circuit and dual-purpose intelligent lamp comprising switch detection circuit Download PDFInfo
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- CN203350409U CN203350409U CN2012207331887U CN201220733188U CN203350409U CN 203350409 U CN203350409 U CN 203350409U CN 2012207331887 U CN2012207331887 U CN 2012207331887U CN 201220733188 U CN201220733188 U CN 201220733188U CN 203350409 U CN203350409 U CN 203350409U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses a switch detection circuit. The switch detection circuit comprises a differential voltage resistance bridge and a processor; the differential voltage resistance bridge comprises four annularly-connected resistors; a first node, a second node, a third node and a fourth node are arranged between the four resistors once; the first node and the third node are respectively connected with an L line and an N line of commercial power; the second node and the fourth node are respectively connected with two electric potential output ports of the processor; the first node and the third node are also respectively connected with two electric potential comparative input ports via detection circuits; and the processor comprises an power supply input port connected with a power supply and a signal output port outputting a signal instruction. By use of the switch detection circuit, the processor is capable of comparing and judging states of a front end control switch and sending out a control signal based on read-in electric potential values of the first node and the third node. The utility model also discloses a switch detection method and the dual-purpose intelligent lamp comprising the switch detection circuit.
Description
Technical field
The utility model relates to testing circuit, particularly switch detection circuit, and the utility model also relates to the dual-purpose intelligent lamp with this testing circuit.
Background technology
Emergency lighting is the important safety facility of Modern Public Building and industrial building, and it is closely related with personal safety and building safety.When power interruption, emergency lighting, to evacuating personnel, fire-fighting and rescue work, is disposed the continuation operation of important production, work or necessary operation, and important effect is arranged.That common emergency light in the market all exists is bulky, the problem such as inconvenience is installed, and causes its marketing to be subject to restriction to a certain extent.Chinese patent 200710030383.7 provides a kind of not to be needed to change under the condition of the former illuminating line of user, under the state of opening, without civil power, automatically opens the dual-purpose intelligent lamp of emergency lighting.But because above-mentioned dual-purpose intelligent lamp can't judge the state of its front-end control switch, when disconnecting, civil power can't determine that whether gauge tap is closed, can't determine that it is manually to disconnect the active disconnection that gauge tap causes that civil power disconnects, or because other reasons causes the passive disconnection that has a power failure and cause.Therefore this dual-purpose intelligent lamp can not be used as illuminating lamp, and its application is very limited.Existing unipolarity detection method, although can be used for checkout equipment Head switches state, but for as there is the equipment of unipolarity measuring ability, if two these equipment are installed in same power network, when the polarity of online signal is contrary, just can not work, can't determine the signal correctness thus, can not be widely used.
The utility model content
According to an aspect of the present utility model, a kind of switch detection circuit is provided, comprise differential pressure resistance bridge and processor, the differential pressure resistance bridge comprises and connects successively the first resistance, the second resistance, the 3rd resistance and the 4th resistance, the 4th resistance is connected with the first resistance, there is first node between the first resistance and the second resistance, there is Section Point between the second resistance and the 3rd resistance, there is the 3rd node between the 3rd resistance and the 4th resistance, there is the 4th node between the 4th resistance and the first resistance, first node is connected with the N line with the L line of civil power respectively with the 3rd node, Section Point is connected with two current potential output ports of processor respectively with the 4th node, first node also is connected with two current potential comparison input ports of processor by detection line respectively with the 3rd node, processor has the power input mouth that is connected with power supply and the signal output port of output signal instruction.In the circuit that adopts technique scheme, two current potential output ports of processor are exported fixing current potential to Section Point and the 4th node, and two current potentials by the processor that is connected respectively with the 3rd node with first node relatively input ports detect and compare the current potential of first node and the 3rd node.When there is no the civil power Alternating Current Power Supply, if the front-end control switch is closed, L load circuit outside front end gauge tap and switch turns back to N, can regard short-circuit loop as, first node and the 3rd node potential value equate, between first node and the 3rd node potential without potential difference (PD).If the front-end control switch is open-circuit condition, first node and the 3rd node potential value are unequal, and processor can compare according to the potential value of the first node read in and the 3rd node, judges thus the front-end control on off state.
The outer load circuit of above-described switch is the support condition of necessity of the switch detection circuit that provides of the utility model.The outer load circuit of switch comprises: (1), the online transformer circuit of switch front end, for example, refrigerator in using, the air conditioner of remote-control closedown or other online electrical equipment with the transformation distribution; (2), the total lock closure of user, a certain online transformer circuit in user's watt-hour meter wire loop or community electrical network; (3), the total lock of user is when closed, the mains-supplied transformer circuit.This switch detection circuit can detect the state of front-end control switch in the circuit of mains-supplied, can also detect the state of front-end control switch in the circuit of low-voltage power supply or direct current supply, as long as this circuit has the outer load circuit of above-mentioned switch.
In some embodiments, the phase place of two of processor output ports can be exchanged.Thus, the equipment that two or other even numbers have switch detection circuit is installed in same power network, when the polarity of online signal is contrary, processor can convert the phase place of two output ports, can avoid thus polarity to cause on the contrary switch detection circuit not work, guarantee the correctness of signal.
In some embodiments, be in series with respectively protective resistance on detection line.But avoid thus the impact of civil power to switch detection circuit, can the conservation treatment device etc. electronic component.
In some embodiments, circuit is provided with shunt capacitance or bypass resistance, and shunt capacitance or bypass resistance two ends connect with the two-phase input line that is connected civil power respectively.LED lamp to the switch Power supply, even power switch disconnects, also can be because of the effect of splicing at the pilot lamp of switch, to switch power module, charge, when reaching Switching Power Supply trigger voltage value, the LED lamp is lit, also because just capacitance energy storage power supply, lamp is bright once just to have gone out, and the LED lamp will be lit off and on and extinguish like this.After shunt capacitance or bypass resistance are set, current return finally to the N end of alternating current forms loop through LED light to bypass resistance by the L end of alternating current, shunt capacitance or bypass resistance have been equivalent to short circuit and have flowed into the voltage of Switching Power Supply input end, and Switching Power Supply does not just have enough voltage to start bright light like this.
In some embodiments, detection line also is provided with the transport and placing device of connecting with protective resistance.
According to another aspect of the present utility model, the switch detection method is provided, wherein, the method comprises:
S1, between the two-phase of civil power input, the differential pressure resistance bridge is set, the differential pressure resistance bridge comprises and connects successively the first resistance, the second resistance, the 3rd resistance and the 4th resistance, the 4th resistance is connected with the first resistance, there is first node between the first resistance and the second resistance, there is Section Point between the second resistance and the 3rd resistance, there is the 3rd node between the 3rd resistance and the 4th resistance, have the 4th node between the 4th resistance and the first resistance, first node is connected with two of civil power respectively with the 3rd node;
S2, to Section Point and the 4th node, export fixing current potential;
Whether the current potential between S3, detection first node and the 3rd node the switch be connected on this circuit by more described current potential judgement be closed.
In some embodiments, also comprise and again detecting and deterministic process, this process comprises;
S4, to Section Point and the 4th node output current potential contrary with S2;
Whether the current potential between S5, detection first node and the 3rd node the switch be connected on this circuit by more described current potential judgement be closed.Thus, when the polarity of online signal is contrary, can convert the phase place of the current potential that transfers to Section Point and the 4th node, avoid polarity to cause on the contrary switch detection circuit not work, guarantee the correctness of signal.
According to another aspect of the present utility model, dual-purpose intelligent lamp is provided, comprise Switching Power Supply, charging and discharging module and LED lighting module, wherein, also comprise switch detection circuit, switch detection circuit and switch power parallel are connected on civil power two-phase input line, and the power input mouth of switch detection circuit is connected with the charging and discharging module, and the signal output port of switch detection circuit is connected with the LED lighting module.Adopt the dual-purpose intelligent lamp of above technical scheme, can accurately judge that it is to belong to the active disconnection that manual disconnection gauge tap causes that civil power disconnects, or because other reasons causes the passive disconnection that has a power failure and cause.Whether this dual-purpose intelligent lamp can open the emergency lighting state by automatic decision, and electric main when power supply arranged, and the front-end control switch can opening and closing, when there is no mains-supplied, but the also opening and closing of front-end control switch.This dual-purpose intelligent lamp has family's normal lighting and function of emergency illumination concurrently thus.
The accompanying drawing explanation
The circuit diagram of the switch detection circuit that Fig. 1 is the utility model one embodiment.
Fig. 2 is equipped with two schematic diagram with circuit of switch detection circuit equipment in same electrical network.
Schematic diagram after the phase place that Fig. 3 is the output potential of switch detection circuit in the circuit shown in Fig. 2 changes.
The schematic diagram of the dual-purpose intelligent circuit for lamp that Fig. 4 is another embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing, utility model is described in further detail.
Fig. 1 has schematically shown the switch detection circuit according to a kind of embodiment of the present utility model.As shown in the figure, comprise differential pressure resistance bridge 1 and processor 2.Wherein, processor 2 is the PIC16F616 chip, and the first pin of this chip is the power input mouth, and the second pin and the 3rd pin are respectively the current potential output port, the 6th pin and the 9th pin are respectively signal output port, and the 12 pin and the 13 pin are respectively relatively input port of current potential.Differential pressure resistance bridge 1 comprises that connecting successively the first resistance R 1, the second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4, the four resistance R 4 is connected with the first resistance R 1.There is first node A between the first resistance R 1 and the 4th resistance R 4, there is Section Point B between the first resistance R 1 and the second resistance R 2, there is the 3rd node C between the second resistance R 2 and the 3rd resistance R 3, between the 3rd resistance R 3 and the 4th resistance R 4, there is the 4th node D.First node A is connected with the N line with the L line of civil power respectively with the 3rd node C.Section Point B is connected with the 3rd pin with the second pin of processor 2 respectively with the 4th node D, and wherein the phase place of the second pin and the 3rd pin output potential is random, and can exchange.First node A also is connected with the 12 pin with the 13 pin of processor 2 by detecting loop respectively with the 3rd node C.Be in series with on the detection line of first node A on the detection line of protective resistance R11 and transport and placing device 3, the three node C and be in series with protective resistance R12 and transport and placing device 3.In the present embodiment, the model of transport and placing device 3 is LMV358I.The front-end control K switch that this switch detection circuit detects is the switch with the indication of LED civil power.The civil power indicating circuit be comprised of light-emitting component LED1 and protective resistance R13 is in parallel with the front-end control K switch.Shunt capacitance C1 is connected with the N line with the L line that is connected civil power respectively with bypass resistance R5 two ends.The 9th pin of processor 2 is connected with resistance R 13 with optical-electric module 4 respectively.Thus, processor 2 can send electric signal by resistance R 13 and directly control, and also can carry out the photoelectricity isolated controlling by optical-electric module 4, and the optocoupler model that in the present embodiment, optical-electric module 4 adopts is TL817, and its earth terminal is in series with optocoupler protective resistance R15.
In the circuit that adopts technique scheme, the second pin of processor 2 and the 3rd pin are exported fixing current potential to Section Point B and the 4th node D respectively, and detect and compare the current potential of first node A and the 3rd node C by the 13 pin and the 12 pin.When there is no the civil power Alternating Current Power Supply, if the front-end control K switch is closed, first node A load circuit 5 outside front end gauge tap K and switch turns back to the 3rd node C, can regard short-circuit loop as, so first node A is equal with the 3rd node C potential value.If the front-end control K switch is open-circuit condition, between first node A and the 3rd node potential C, can't form loop, first node and the 3rd node potential value are unequal.The first node that processor 2 can read according to the 13 pin and the 12 pin and the potential value of the 3rd node compare, and judge thus front-end control K switch state, and send control signal by the 6th pin and the 9th pin.When first node A is equal with the 3rd node C potential value, processor 2 can be made the judgement that the front-end control K switch is closure state; When first node A and the 3rd node C potential value, when unequal, processor 2 can be made the judgement that the front-end control K switch is open-circuit condition.The outer load circuit 5 of above-described switch is support conditions of necessity of the switch detection circuit that provides of the utility model.The outer load circuit 5 of switch comprises: (1), the online transformer circuit of switch front end, for example, refrigerator in using, the air conditioner of remote-control closedown or other online electrical equipment with the transformation distribution; (2), the total lock closure of user, a certain online transformer circuit in user's watt-hour meter wire loop or community electrical network; (3), the total lock of user is when closed, the mains-supplied transformer circuit.In the present embodiment, this switch detection circuit detects the state of front-end control K switch in the circuit of mains-supplied, in some other embodiment, this switch detection circuit can also detect the state of front-end control K switch in the circuit of low-voltage power supply or direct current supply, as long as this circuit has the outer load circuit 5 of above-mentioned switch.
Fig. 2 and Fig. 3 have schematically shown in same electrical network two situations with equipment of switch detection circuit have been installed.As shown in the figure, equipment E and equipment F all have switch detection circuit.When there is no the civil power Alternating Current Power Supply, the independent judgement of the state polarity to the front-end control switch of the switch detection circuit of equipment E and equipment F.The current potential output port 2f of the current potential output port 2e of equipment E and equipment F is respectively to civil power L line output potential, and the current potential output port 3f of the current potential output port 3e of equipment E and equipment F is respectively to civil power N line output potential.In two current potential output ports of same equipment, the formation positive pole that current potential is higher, the formation negative pole that current potential is lower.When the polarity of the current potential output port 2f of the current potential output port 2e of equipment E and equipment F is contrary, current potential output port 2e has formed loop by civil power L line and current potential output port 2f, meanwhile, current potential output port 3e has also formed loop by civil power N line and current potential output port 3f, therefore the switch detection circuit cisco unity malfunction, can not judge the state of front-end control K switch.Now, the phase place of the current potential of equipment E current potential output port 2e and current potential output port 3e or equipment F current potential output port 2f and current potential output port 3f changes, and the polarity of above-mentioned current potential output port converts.When the polarity of the current potential output port 2f of the current potential output port 2e of equipment E and equipment F is identical, current potential output port 2e can not form loop by civil power L line and current potential output port 2f, current potential output port 3e can not form loop by civil power N line and current potential output port 3f yet, switch detection circuit works, and can judge the state of front-end control K switch.A plurality of situations with equipment of switch detection circuit are installed in same electrical network, and can be divided into the equipment number be two kinds of situations of odd and even number.When the number of the equipment of installing is odd number, switch detection circuit in no case there will be the phenomenon of above-mentioned cisco unity malfunction, can accurately judge the state of front-end control K switch.When the number of the equipment of installing is even number, the phenomenon of cisco unity malfunction likely appears in switch detection circuit.Now can reverse and solve output port by the problem in civil power L line or N line formation loop by the phase place of the current potential by the current potential output port.
Fig. 4 has schematically shown a kind of circuit structure with dual-purpose intelligent lamp of switch detection circuit.As shown in the figure, this dual-purpose intelligent lamp comprises Switching Power Supply, charging and discharging module and LED lighting module and switch detection circuit.This dual-purpose intelligent lamp is controlled by the front-end control K switch.Switching Power Supply is connected between civil power L line and N line, and the charging and discharging module is connected with Switching Power Supply, and the LED lighting module is connected with the charging and discharging module.Switch detection circuit and switch power parallel are connected between civil power L line and N line.The charging and discharging module is connected to the first pin VDD positive supply input end of processor by VDC-IN circuit output+3V voltage.The 6th pin of processor is connected with the LED lighting module by the PWM-OUT circuit.Adopt the dual-purpose intelligent lamp of above technical scheme, the charging and discharging module provides voltage by the VDC-IN circuit to switch detection circuit.Switch detection circuit, by detecting and compare the current potential of civil power L line and N line, judges the state of front-end control K switch, then judged result is passed through to the PWM-OUT circuit and is fed back and control the LED lighting module to the LED lighting module.When civil power disconnects, switch detection circuit can accurately judge that it is to belong to the active disconnection that manual disconnection gauge tap causes that civil power disconnects, or because other reasons causes the passive disconnection that has a power failure and cause.If it is to belong to initiatively to disconnect that civil power disconnects, function of emergency illumination does not start, and this dual-purpose intelligent lamp does not work; If it is to belong to passive disconnection that civil power disconnects, now function of emergency illumination starts, and this dual-purpose intelligent lamp is bright.Belong to the active disconnection that manual disconnection gauge tap causes, or because other reasons causes the passive disconnection that has a power failure and cause.Whether this dual-purpose intelligent lamp can open the emergency lighting state by automatic decision, and electric main when power supply arranged, and the front-end control switch can opening and closing, when there is no mains-supplied, but the also opening and closing of front-end control switch.This dual-purpose intelligent lamp has family's normal lighting and function of emergency illumination concurrently thus.
Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (8)
1. switch detection circuit, it is characterized in that, comprise differential pressure resistance bridge and processor, described differential pressure resistance bridge comprises the first resistance connected successively, the second resistance, the 3rd resistance and the 4th resistance, described the 4th resistance is connected with the first resistance, there is first node between described the first resistance and the second resistance, there is Section Point between described the second resistance and the 3rd resistance, there is the 3rd node between described the 3rd resistance and the 4th resistance, there is the 4th node between described the 4th resistance and the first resistance, described first node is connected with two power input lines respectively with the 3rd node, described Section Point is connected with two current potential output ports of described processor respectively with the 4th node, described first node also is connected with two current potential comparison input ports of processor by detection line respectively with the 3rd node, described processor has the power input mouth that is connected with power supply and the signal output port of output signal instruction.
2. switch detection circuit according to claim 1, is characterized in that, the phase place of two current potential output ports of described processor can be exchanged.
3. switch detection circuit according to claim 1 and 2, is characterized in that, is in series with respectively protective resistance on described detection line.
4. switch detection circuit according to claim 1 and 2, is characterized in that, also comprises shunt capacitance or bypass resistance, and described shunt capacitance or bypass resistance two ends connect with the two-phase input line that is connected civil power respectively.
5. switch detection circuit according to claim 3, is characterized in that, described detection line also is provided with transport and placing device, and described transport and placing device is connected with described protective resistance.
6. dual-purpose intelligent lamp, comprise Switching Power Supply, charging and discharging module and LED lighting module, it is characterized in that, also comprise as claim 1 or 2 or 5 described switch detection circuits, described switch detection circuit and described switch power parallel are connected on civil power two-phase input line, the power input mouth of described switch detection circuit is connected with described charging and discharging module, and the signal output port of described switch detection circuit is connected with described LED lighting module.
7. dual-purpose intelligent lamp according to claim 6, is characterized in that, is in series with respectively protective resistance on described detection line.
8. dual-purpose intelligent lamp according to claim 6, is characterized in that, also comprises shunt capacitance or bypass resistance that two ends are connected with the two-phase input line of civil power respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207331887U CN203350409U (en) | 2012-12-27 | 2012-12-27 | Switch detection circuit and dual-purpose intelligent lamp comprising switch detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207331887U CN203350409U (en) | 2012-12-27 | 2012-12-27 | Switch detection circuit and dual-purpose intelligent lamp comprising switch detection circuit |
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| CN203350409U true CN203350409U (en) | 2013-12-18 |
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| CN2012207331887U Expired - Fee Related CN203350409U (en) | 2012-12-27 | 2012-12-27 | Switch detection circuit and dual-purpose intelligent lamp comprising switch detection circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076561A (en) * | 2012-12-27 | 2013-05-01 | 马惠馨 | On-off detection circuit and detection method thereof, and dual-purpose intelligent lamp comprising on-off detection circuit |
| CN111683435A (en) * | 2020-05-25 | 2020-09-18 | 中船邮轮科技发展有限公司 | Additional emergency lighting equipment capable of being controlled in real time in on-off mode and cabin |
| CN112114276A (en) * | 2020-07-10 | 2020-12-22 | 青岛海信电子产业控股股份有限公司 | Control circuit, control panel, electric equipment and control method |
-
2012
- 2012-12-27 CN CN2012207331887U patent/CN203350409U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076561A (en) * | 2012-12-27 | 2013-05-01 | 马惠馨 | On-off detection circuit and detection method thereof, and dual-purpose intelligent lamp comprising on-off detection circuit |
| CN103076561B (en) * | 2012-12-27 | 2015-01-14 | 马惠馨 | On-off detection circuit and detection method thereof, and dual-purpose intelligent lamp comprising on-off detection circuit |
| CN111683435A (en) * | 2020-05-25 | 2020-09-18 | 中船邮轮科技发展有限公司 | Additional emergency lighting equipment capable of being controlled in real time in on-off mode and cabin |
| CN112114276A (en) * | 2020-07-10 | 2020-12-22 | 青岛海信电子产业控股股份有限公司 | Control circuit, control panel, electric equipment and control method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20141227 |
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| EXPY | Termination of patent right or utility model |