CN201336551Y - Wall remote-control socket control device - Google Patents
Wall remote-control socket control device Download PDFInfo
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- CN201336551Y CN201336551Y CNU2009200037551U CN200920003755U CN201336551Y CN 201336551 Y CN201336551 Y CN 201336551Y CN U2009200037551 U CNU2009200037551 U CN U2009200037551U CN 200920003755 U CN200920003755 U CN 200920003755U CN 201336551 Y CN201336551 Y CN 201336551Y
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Abstract
The utility model relates to a wall remote-control socket control device, which is provided with a rectifying direct-current circuit, a remote control switch circuit, a current overload protection circuit, a mutual inductance signal rectifying circuit, a voltage identifying circuit and an overload protection switch pipe, wherein, the rectifying direct-current circuit is connected with the input end of an alternative-current power source and is used for supplying power to the remote control switch circuit; the remote control switch circuit is arranged between the input end of the alternative-current power source and an alternative-current output circuit and is used for controlling the connection of the alternative-current output circuit; the current overload protection circuit is provided with a current mutual inductor which is used for detecting the load current of the alternative-current output circuit; the mutual inductance signal rectifying circuit is used for transforming the alternative-current voltage which is sensed by the current mutual inductor to a direct-current voltage; the voltage identifying circuit is used for identifying the direct-current voltage which is outputted by the mutual inductance rectifying circuit; the overload protection switch pipe is connected with two output ends of the rectifying direct-current circuit, and a base electrode of the overload protection switch pipe is connected with the voltage identifying circuit and is controlled by the voltage identifying circuit to be connected or disconnected. The device can prevent the overload protection element from being overheated because the load current is large, and can be automatically restored to the normal work status after shutting off the power supply by the overload protection.
Description
Technical field
The utility model belongs to a kind of electronic electric equipment, is specifically related to a kind of remote control socket on wall.
Background technology
In the household electrical appliance application scenario, people often need be provided with supply socket on wall, and the attaching plug insertion supply socket with electrical equipment promptly can be electrical equipment power supply is provided.Usually be equipped with the switch of cutting off the electricity supply on the household electrical appliance, off switch, the power supply on the electrical equipment can be cut off, but also charged on power line and the socket, had both made attaching plug is pulled up, and power line is not charged, but socket is also charged, has certain potential safety hazard.Therefore in the prior art a kind of remote control socket on wall is arranged, this socket is provided with remote control switching circuit, is used to control the switch contact that is connected between socket electrode and the binding post, when receiving the remote closing signal, this switch contact is disconnected, make power device, socket all not charged, improved fail safe; Simultaneously in order to carry out overload protection; generally also be serially connected with protective tube in the load circuit,, just cut off the work loop in case operating current is excessive; the weak point of this class device is: when socket power is big; operating current is also very big, and protective tube self all has certain resistance, so the phenomenon of the temperature rise that is easy to occur to generate heat; thereby do not reach the product standard requirement; and this protective tube will be changed new element and could recover operate as normal in case disconnection promptly can not be restored.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of remote control socket on wall control device that has overload protection and can suppress overload protection element temperature rise heating.
The technical scheme that addresses the above problem is: the utility model is provided with:
The commutated direct current road that is connected with ac power input end is used to the remote control switching circuit power supply;
Be connected on ac power input end and the remote control switching circuit that exchanges between the output circuit, be used to control the break-make that exchanges output circuit;
It is characterized in that: be provided with current overload protection circuit, described current overload protection circuit is provided with:
Current transformer is used to detect the load current that exchanges output circuit;
The mutual inductance signal rectification circuit is used for the alternating voltage of current transformer induction is become direct voltage;
Voltage identificating circuit is used to differentiate the size of mutual inductance signal rectification circuit output dc voltage;
The overcurrent protection switch pipe is connected on commutated direct current road two outputs, and its base stage is connected with voltage identificating circuit, controls its break-make by voltage identificating circuit.
Operation principle of the present utility model is: the rectification DC power supply that is connected with ac power input end is the remote control switching circuit power supply; when remote control switching circuit receives shutoff wireless remote control signal; cut off and exchange output circuit; when the interchange output circuit has load current; current transformer promptly produces ac induction voltage; load current is big more; induced voltage is high more; ac induction voltage becomes direct voltage through the rectification of mutual inductance signal rectification circuit; voltage identificating circuit is differentiated the size of this direct voltage; when this dc voltage value surpasses set point; the conducting of overcurrent protection switch pipe; making commutated direct current road output (decoding ic chip+5V operating voltage) is low-voltage (being lower than operating voltage) by strangulation; remote control switch; decoding circuit is not worked; the interchange output circuit is cut off; no-load current output; the current transformer induced voltage reduces to zero simultaneously; the overcurrent protection switch pipe turn-offs; the commutated direct current road restores electricity; remote control switching circuit is in holding state, has only when receiving remote signal more just can reclose the interchange output circuit.Thereby play overload protective function.
The phenomenon that the overload protection element temperature rise that the utility model can suppress to occur because of load current is excessive is generated heat; when surpassing set point, load current can automatically shut down the interchange output circuit; and after automatically shutting down the interchange output circuit, can also make remote control switching circuit recover normal operating conditions automatically.The utility model is specially adapted to powerful remote control socket on wall, suppresses the heating of high-power remote control socket on wall.
Description of drawings
Fig. 1, the utility model frame principle figure
Fig. 2, the utility model embodiment 1 frame principle figure
Fig. 3, the utility model embodiment 1 circuit diagram
Fig. 4, the utility model embodiment 2 circuit diagrams
Embodiment
Embodiment 1 (referring to Fig. 2, Fig. 3)
This example is provided with the commutated direct current road that is connected with ac input end and is connected on ac input end and the remote control switching circuit that exchanges between the output circuit, described remote control switching circuit is provided with the wireless receiving amplification and rectification circuit that is used to receive remote signal, the wireless receiving amplification and rectification circuit is connected with decoding circuit, decoding circuit is connected with the ON-OFF control circuit of control relay coil break-make, and the relay switch contact is connected between ac power input end and the AC power output circuit;
The structure of current overload protection circuit is: be provided with current transformer in the interchange output circuit; the output of current transformer is connected with the mutual inductance signal rectification circuit; the mutual inductance signal rectification circuit is connected by the base stage of voltage identificating circuit with the overcurrent protection switch pipe, and the overcurrent protection switch pipe is connected between two outputs of commutated direct current road.
Fig. 3 is this routine circuit diagram.
220 volts of ac input end N, L pass through 24 volts of direct voltages of rectification circuit output that the D1-D4 diode is formed, and the voltage stabilizing circuit of forming through C2, R5, filter circuit Z1, the Z2 of C4 composition is exported the 5V direct voltage again, for remote control switching circuit provides DC power supply.
The wireless receiving amplification circuit structure of remote control switching circuit is: be provided with the high frequency of being made up of L4, C10, triode G2 and peripheral circuit and receive and the superregenerative detection circuit, its output connects the baseband signal amplification and rectification circuit by low-pass filter circuit.The baseband signal amplification and rectification circuit is made up of operational amplifier IC1A, IC1B and peripheral circuit, its output is connected with decoding circuit input 14 pin of being made up of IC2, decoding circuit output 13 pin are connected with the ON-OFF control circuit that switching tube G1 forms, the coil of relay J 4 is connected in the collector circuit of switching tube G1, the switch contact of relay is connected between ac power input end L and the ac output end OUT, and control exchanges the break-make of output circuit.
This routine overload protecting circuit structure is: exchanging in the output circuit, INDUCTOR IRON current transformer is housed, its output terminals A, B are connected with the all-wave mutual inductance signal rectification circuit input end that D7, D8 form, and the mutual inductance signal rectification circuit output end is connected with voltage identificating circuit with the filter circuit that C23 forms by R24;
This routine voltage identificating circuit is made of the voltage comparator that LM358 forms; the dividing point of mutual inductance signal rectification circuit output end is connected with the comparison input 5 of voltage comparator LM358; voltage comparator output 7 is connected with overcurrent protection switch pipe Q2 base stage by the filter circuit that R8 and C24 form, overcurrent protection switch pipe Q2 is connected on+5 volts of rectification DC power supply two outputs between.
Be connected to delay capacitor C24 between overcurrent protection switch pipe Q2 base stage and the ground, but its function is the high-frequency interferencing signal of elimination short time.
When the load current that exchanges output circuit surpasses set point; the direct voltage of mutual inductance signal rectification circuit output increases; voltage comparator LM358 output 7 output overloading signals; overcurrent protection switch pipe Q2 conducting; with commutated direct current source output terminal+5V voltage clamping to electronegative potential; the remote control switching circuit dead electricity quits work; relay J 4 contacts disconnect; be cut to the interchange output loop of electricity consumption electric; after exchanging the output of output circuit no-load current; the current transformer induced voltage reduces to zero, and voltage comparator comparative voltage input terminal voltage drops to below the set point, and overcurrent protection switch pipe Q2 recovers cut-off state; the commutated direct current source output terminal recovers+5 volts of power supplies; remote control switching circuit reverts to holding state, in case the remote signal of receiving can be connected the interchange output circuit again.
Embodiment 2 (Fig. 4)
As different from Example 1: the voltage identificating circuit of this routine current overload protection circuit is to be provided with the bleeder circuit of being made up of resistance R 24 and R25 (24 whiles of resistance R and capacitor C 23 constitute filter circuits) between mutual inductance signal rectification circuit output end and ground; the dividing point of bleeder circuit is connected with overcurrent protection switch pipe Q2 base stage; generally; the Vbe voltage of Q2 is lower than 0.7 volt; overcurrent protection switch pipe Q2 is in cut-off state; when load current surpasses set point; the dividing point voltage of induced signal rectification circuit output end bleeder circuit raises; overcurrent protection switch pipe Q2 conducting; to electronegative potential, other operation principle is identical with embodiment 2 with the strangulation of rectification DC power supply output end voltage.
Claims (5)
1, remote control socket on wall control device is provided with:
The commutated direct current road that is connected with ac power input end is used to the remote control switching circuit power supply;
Be connected on ac power input end and the remote control switching circuit that exchanges between the output circuit, be used to control the break-make that exchanges output circuit;
It is characterized in that: be provided with current overload protection circuit, described current overload protection circuit is provided with:
Current transformer is used to detect the load current that exchanges output circuit;
The mutual inductance signal rectification circuit is used for the alternating voltage of current transformer induction is become direct voltage;
Voltage identificating circuit is used to differentiate the size of mutual inductance signal rectification circuit output dc voltage;
The overcurrent protection switch pipe is connected on commutated direct current road two outputs, and its base stage is connected with voltage identificating circuit, controls its break-make by voltage identificating circuit.
2, remote control socket on wall according to claim 1, it is characterized in that: described remote control switching circuit is provided with the wireless receiving amplification and rectification circuit that is used to receive remote signal, the wireless receiving amplification and rectification circuit is connected with decoding circuit, decoding circuit is connected with the ON-OFF control circuit of control relay coil break-make, and the relay switch contact is connected between ac power input end and the AC power output circuit.
3, remote control socket on wall according to claim 1; it is characterized in that: described voltage identificating circuit is made of voltage comparator; the dividing point of mutual inductance signal rectification circuit output end compares input with voltage comparator and is connected; the voltage comparator output is connected with overcurrent protection switch pipe base stage by filter circuit, and the overcurrent protection switch pipe is connected between rectification DC power supply two outputs.
4, remote control socket on wall according to claim 1; it is characterized in that: described voltage identificating circuit is to be provided with the bleeder circuit of being made up of resistive element between mutual inductance signal rectification circuit output end and ground, and the dividing point of bleeder circuit is connected with overcurrent protection switch pipe base stage.
5, according to the described remote control socket on wall of the arbitrary claim of claim 1-4, it is characterized in that: be connected to delay capacitor (C24) between described overcurrent protection switch pipe (Q2) base stage and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200037551U CN201336551Y (en) | 2009-01-23 | 2009-01-23 | Wall remote-control socket control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200037551U CN201336551Y (en) | 2009-01-23 | 2009-01-23 | Wall remote-control socket control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336551Y true CN201336551Y (en) | 2009-10-28 |
Family
ID=41288213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200037551U Expired - Fee Related CN201336551Y (en) | 2009-01-23 | 2009-01-23 | Wall remote-control socket control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336551Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269699A (en) * | 2014-10-10 | 2015-01-07 | 成都蒲江珂贤科技有限公司 | Three-phrase high-power remote control socket |
| CN105406290A (en) * | 2015-11-20 | 2016-03-16 | 普天智能照明研究院有限公司 | Light-load protection type socket |
-
2009
- 2009-01-23 CN CNU2009200037551U patent/CN201336551Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269699A (en) * | 2014-10-10 | 2015-01-07 | 成都蒲江珂贤科技有限公司 | Three-phrase high-power remote control socket |
| CN105406290A (en) * | 2015-11-20 | 2016-03-16 | 普天智能照明研究院有限公司 | Light-load protection type socket |
| CN105406290B (en) * | 2015-11-20 | 2018-02-13 | 普天智能照明研究院有限公司 | A kind of light loading protection formula socket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Wall remote-control socket control device Effective date of registration: 20121212 Granted publication date: 20091028 Pledgee: Bank of Wenzhou Limited by Share Ltd Liming branch Pledgor: Chen Yaohua Registration number: 2012990000786 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20141224 Granted publication date: 20091028 Pledgee: Bank of Wenzhou Limited by Share Ltd Liming branch Pledgor: Chen Yaohua Registration number: 2012990000786 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20140123 |