CN203660674U - On-line electricity-taking circuit for low-power products - Google Patents
On-line electricity-taking circuit for low-power products Download PDFInfo
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- CN203660674U CN203660674U CN201320824767.7U CN201320824767U CN203660674U CN 203660674 U CN203660674 U CN 203660674U CN 201320824767 U CN201320824767 U CN 201320824767U CN 203660674 U CN203660674 U CN 203660674U
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Abstract
The utility model discloses an on-line electricity-taking circuit for low-power products, wherein the input end of the on-line electricity-taking circuit is configured to induct current signals, and the output end of the on-line electricity-taking circuit is connected with a low-power product. In the on-line electricity-taking circuit, a mutual inductor is connected with a current and voltage commutator. The output end of the current and voltage commutator is connected with a bridge type rectifier. The output end of the bridge type rectifier is connected with a divider resistor. The output end of the divider resistor is connected with a voltage stabilizer. The output end of the voltage stabilizer is connected in parallel with a super capacitance energy storage apparatus and a measuring circuit. The output end of the super capacitance energy storage apparatus is connected with a voltage-stabilizing chip through a filtering inductor. The output end of the measurement circuit is connected with one input end of a main chip of the low-power product. One output end of the main chip of the low-power product is connected with the voltage-stabilizing chip through a switch. According to the technical scheme of the utility model, the on-line electricity-taking circuit provides a stable voltage for the main chip of the low-power product and also provides a continuous power supply for the low-power product. In this way, the internal circuit of the low-power product is ensured to be in normal operation even when the low-power product is not connected with any external power supply line.
Description
Technical field
The utility model relates to online power-supply circuit, relates in particular to the online power-supply circuit of low-power consumption product.
Background technology
At present, the product of low-power consumption uses in a large number, for example wireless temperature detector, wireless alarm, smoke alarm, fault detector etc.The most of employing of the product wireless telecommunications of these low-power consumption, battery-powered.For example, in the time that the product of these power consumptions is arranged on not easy-to-dismount position, out of doors or while using in high-tension electricity, the extremely difficult battery of changing, so be necessary to develop a kind of circuit that can power to low-power consumption.
Summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of online power-supply circuit of the sustainable low-power consumption product that low-power consumption product is powered.
The technical solution of the utility model is: the online power-supply circuit of low-power consumption product, the input sensor current signal of described online power-supply circuit, the output of online power-supply circuit is connected with low-power consumption product, described online power-supply circuit comprises the instrument transformer for sensor current signal, and current/voltage device for interchanging, bridge rectifier, divider resistance, pressurizer, super capacitor energy storage device, measuring circuit and voltage stabilizing chip, the output of instrument transformer is connected with the input of current/voltage device for interchanging, the output of current/voltage device for interchanging is connected with the input of bridge rectifier, the output of bridge rectifier is connected with divider resistance, the output of divider resistance is connected with pressurizer, the output of pressurizer is connected with super capacitor energy storage device and measuring circuit respectively, super capacitor energy storage device and measuring circuit are in parallel, the output of super capacitor energy storage device is connected with voltage stabilizing chip by filter inductance, the output of measuring circuit is connected with master chip one input of low-power consumption product, master chip one output of low-power consumption product is connected with voltage stabilizing chip by switch.
Measuring circuit described in the utility model comprises two divider resistance R3, R4, and two filter capacitor C3, C4, the input of resistance R 3 is connected with pressurizer, the output of resistance R 3 is connected with resistance R 4, capacitor C 3 and capacitor C 4 are connected in parallel on respectively in resistance R 4, and the output of resistance R 4 is connected with master chip.
Described current/voltage device for interchanging is resistance R V1, is also parallel with protective resistance R1 on resistance R V1.
Described pressurizer is two voltage stabilizing didoe D2, D3 in parallel, the first end ground connection of diode D2, and the second end is connected with the output of divider resistance; The first end ground connection of diode D3, the second end is connected with the output of divider resistance.
Between described pressurizer and super capacitor energy storage device, be also provided with filter capacitor C1.The online power-supply circuit of low-power consumption product of the present utility model, by instrument transformer, the circuit that has current signal and flow through is carried out to sensor current signal, and the current signal of induction is converted to voltage signal, then carry out after the processing such as rectification, dividing potential drop, voltage stabilizing, filtering, for the master chip of low-power consumption product provides stable voltage, provide lasting power supply to low-power consumption product, even if make not circumscripted power line of low-power consumption product, its internal circuit also can normally be worked.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the circuit diagram of the online power-supply circuit of the utility model low-power consumption product.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail.
As shown in Figure 1, the online power-supply circuit of the utility model low-power consumption product, the input sensor current signal of described online power-supply circuit, the output of online power-supply circuit is connected with low-power consumption product, described online power-supply circuit comprises the instrument transformer L2 for sensor current signal, and current/voltage device for interchanging 10, bridge rectifier D 1, divider resistance R2, pressurizer 20, super capacitor energy storage device C2, measuring circuit 30 and voltage stabilizing chip U1, the output of instrument transformer L2 is connected with the input of current/voltage device for interchanging 10, the output of current/voltage device for interchanging 10 is connected with the input of bridge rectifier D 1, the output of bridge rectifier D 1 is connected with divider resistance R2, the output of divider resistance R2 is connected with pressurizer 20, the output of pressurizer 20 is connected with super capacitor energy storage device C2 and measuring circuit 30 respectively, super capacitor energy storage device C2 and measuring circuit 30 are in parallel, the output of super capacitor energy storage device C2 is connected with voltage stabilizing chip U1 by filter inductance L1, the output of measuring circuit 30 is connected with master chip one input of low-power consumption product, master chip one output of low-power consumption product is connected with voltage stabilizing chip U1 by switch.
Further, measuring circuit 30 described in the utility model comprises two divider resistance R3, R4, and two filter capacitor C3, C4, the input of resistance R 3 is connected with pressurizer 20, the output of resistance R 3 is connected with resistance R 4, resistance R 4, capacitor C 3 are connected in parallel on respectively in resistance R 4, and the output of resistance R 4 is connected with the master chip of low-power consumption product.
Further, described current/voltage device for interchanging 10 is resistance R V1,, on resistance R V1, be also parallel with protective resistance R1.The current signal of input is converted to voltage signal by current/voltage device for interchanging 10, and protective resistance R1 protects the circuit of its rear end.
Further, described pressurizer 20 is two voltage stabilizing didoe D2, D3 in parallel, the first end ground connection of diode D2, and the second end is connected with the output of divider resistance R2; The first end ground connection of diode D3, the second end is connected with the output of divider resistance R2.
Further, between described pressurizer 20 and super capacitor energy storage device C2, be also provided with filter capacitor C1.
When the online power-supply circuit work of the utility model low-power consumption product, first instrument transformer L2 is arranged on outside the circuit that current signal flows through.Instrument transformer L2 sensor current signal, and current signal is sent to current/voltage device for interchanging 10, the resistance R V1 of current signal in current/voltage device for interchanging 10 transfers current signal to voltage signal, and the voltage signal after conversion is delivered in bridge rectifier D 1, bridge rectifier D 1 transfers the voltage signal of interchange to d. c. voltage signal.This d. c. voltage signal is first through divider resistance R2 dividing potential drop, then diode D2 and diode D3 voltage stabilizing in pressurizer 20, and then flows to respectively super energy storage C2 and measuring circuit 30.
The voltage signal of sending into super capacitor energy storage device C2 is first after filter capacitor C1 Exception Filter voltage signal, then is stored in super capacitor energy storage device C2.The output of super capacitor energy storage device C2 is connected with voltage stabilizing chip U1 by filter inductance L1.
The voltage signal that enters measuring circuit 30 carries out dividing potential drop through divider resistance R3 and divider resistance R4 successively, and the voltage signal after dividing potential drop carries out, after filtering, inputing to the master chip of low-power consumption product through filter capacitor C3 and filter capacitor C4 successively.
When the voltage signal that flows to the master chip of low-power consumption product when measuring circuit reaches set point, the switch closure between master chip and voltage stabilizing chip U1; Meanwhile, super capacitor energy storage device C2 electric discharge, the voltage signal that super capacitor energy storage device C2 emits is after filter inductance L1 filtering, then through voltage stabilizing chip U1 voltage stabilizing, the last master chip that flows to again low-power consumption product, powers to master chip.
In the time that the voltage that measuring circuit measures does not reach the set point in the master chip of low-power consumption product, illustrate that the voltage of storing in super capacitor energy storage device C2 is also not enough to drive voltage stabilizing chip U1 work, now, switch between master chip and voltage stabilizing chip U1 disconnects, and super capacitor energy storage device C2 continues stored energy.
The impact of the voltage signal that filter inductance L1 available buffer super capacitor energy storage device C2 emits to voltage stabilizing chip U1.
The unstable voltage signal that voltage stabilizing chip U1 can emit super capacitor energy storage device C2 is stabilized in the operating voltage range of master chip.
In the utility model, the product of described low-power consumption can be wireless temperature detector, wireless alarm, smoke alarm, fault detector etc.The master chip of the product of low-power consumption adopts after online power-supply circuit of the present utility model, and without changing battery, online power-supply circuit can be the product continued power of low-power consumption again.
Claims (5)
1. the online power-supply circuit of low-power consumption product, the input sensor current signal of described online power-supply circuit, the output of online power-supply circuit is connected with low-power consumption product, it is characterized in that: described online power-supply circuit comprises the instrument transformer for sensor current signal, and current/voltage device for interchanging, bridge rectifier, divider resistance, pressurizer, super capacitor energy storage device, measuring circuit and voltage stabilizing chip, the output of instrument transformer is connected with the input of current/voltage device for interchanging, the output of current/voltage device for interchanging is connected with the input of bridge rectifier, the output of bridge rectifier is connected with divider resistance, the output of divider resistance is connected with pressurizer, the output of pressurizer is connected with super capacitor energy storage device and measuring circuit respectively, super capacitor energy storage device and measuring circuit are in parallel, the output of super capacitor energy storage device is connected with voltage stabilizing chip by filter inductance, the output of measuring circuit is connected with master chip one input of low-power consumption product, master chip one output of low-power consumption product is connected with voltage stabilizing chip by switch.
2. the online power-supply circuit of low-power consumption product according to claim 1, it is characterized in that: described measuring circuit comprises two divider resistance R3, R4, and two filter capacitor C3, C4, the input of resistance R 3 is connected with pressurizer, the output of resistance R 3 is connected with resistance R 4, capacitor C 3 and capacitor C 4 are connected in parallel on respectively in resistance R 4, and the output of resistance R 4 is connected with master chip.
3. the online power-supply circuit of low-power consumption product according to claim 1, is characterized in that: described current/voltage device for interchanging is resistance R V1, is also parallel with protective resistance R1 on resistance R V1.
4. the online power-supply circuit of low-power consumption product according to claim 1, is characterized in that: described pressurizer is two voltage stabilizing didoe D2, D3 in parallel, the first end ground connection of diode D2, and the second end is connected with the output of divider resistance; The first end ground connection of diode D3, the second end is connected with the output of divider resistance.
5. the online power-supply circuit of low-power consumption product according to claim 1, is characterized in that: between described pressurizer and super capacitor energy storage device, be also provided with filter capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824767.7U CN203660674U (en) | 2013-12-13 | 2013-12-13 | On-line electricity-taking circuit for low-power products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320824767.7U CN203660674U (en) | 2013-12-13 | 2013-12-13 | On-line electricity-taking circuit for low-power products |
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| Publication Number | Publication Date |
|---|---|
| CN203660674U true CN203660674U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320824767.7U Expired - Fee Related CN203660674U (en) | 2013-12-13 | 2013-12-13 | On-line electricity-taking circuit for low-power products |
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| Country | Link |
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| CN (1) | CN203660674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114386539A (en) * | 2020-10-20 | 2022-04-22 | Oppo广东移动通信有限公司 | Zero-power-consumption node equipment, working method and zero-power-consumption system |
-
2013
- 2013-12-13 CN CN201320824767.7U patent/CN203660674U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114386539A (en) * | 2020-10-20 | 2022-04-22 | Oppo广东移动通信有限公司 | Zero-power-consumption node equipment, working method and zero-power-consumption system |
| CN114386539B (en) * | 2020-10-20 | 2024-03-08 | Oppo广东移动通信有限公司 | Zero-power-consumption node equipment, working method and zero-power-consumption system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20171213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |