CN105322635A - Self-protection intelligent sensor power supply management circuit - Google Patents
Self-protection intelligent sensor power supply management circuit Download PDFInfo
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- CN105322635A CN105322635A CN201410372213.7A CN201410372213A CN105322635A CN 105322635 A CN105322635 A CN 105322635A CN 201410372213 A CN201410372213 A CN 201410372213A CN 105322635 A CN105322635 A CN 105322635A
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Abstract
The invention provides a self-protection intelligent sensor power supply management circuit which is a high quality factor power supply management circuit, has the advantages of high output power and energy harvesting efficiency, and can drive an electronic load to normally work. The self-protection intelligent sensor power supply management circuit provided by the invention comprises a coil transducer and a power supply management circuit. The self-protection intelligent sensor power supply management circuit is structurally characterized in that a space electromagnetic field sends alternating electromagnetic field energy to the coil transducer; the coil transducer converts the electromagnetic field energy into power, and transmits the power to an up-conversion matching circuit; the up-conversion matching circuit is connected with a power storage circuit; the power storage circuit and a control circuit are connected with each other, and are finally connected with a voltage regulation output circuit; the control circuit switches on the voltage regulation output circuit to enable a super capacitor to discharge; the power is transmitted to temperature and current sensors, and a wireless transceiver node is driven to work; a PC is connected with a master node for data processing and displaying; and real-time power utilization monitoring is realized.
Description
Technical field
The invention belongs to the improvement of electric power management circuit, relate to a kind of from full formula intelligent sensor electric power management circuit specifically; In field extensive uses such as environmental monitoring, health care, military affairs, Electrical Safety is monitored in real time.
Background technology
In recent years, the demand of people to large power-consuming equipment constantly increases, and the electric fire caused because electricity consumption is excessive happens occasionally, and therefore becomes particularly important to the monitoring of electric wire state.
Along with the development of technology of wireless sensing network, the wireless sensor node of small size, low-power consumption is widely used in fields such as environmental monitoring, health care, military affairs.Adopt wireless sensing node to carry out wireless transmission to electric wire state parameter, Electrical Safety can be realized and monitor in real time.The battery that traditional method adopts is powered to wireless senser, but the self-contained finite energy of battery, can not meet the demand of long-term work, in the occasion that harsh and unforgiving environments or the mankind cannot arrive, battery altering is very difficult.The power conversion gathered in environment is electric energy, realizes the self energizing of wireless senser, effectively can solve the problem of battery altering difficulty.
At present, the environmental energy that self energizing technology generally adopts has solar energy, wind energy, mechanical energy, electromagnetic energy etc., and external electromagnetic field is prevalent in each corner natural, is the potential energy source of self-power wireless transducer.
Sensor power supply management system function of the prior art is rudimentary, self-powered poor performance, can not meet power supply for a long time, with reference to Chinese invention patent, the patent No. is 200710117796.9, it discloses a kind of sensor node energy management system and comprises switch switching circuit, charging circuit, voltage stabilizing circuit, booster circuit, single-chip microcomputer and A/D change-over circuit.The energy that solar-energy photo-voltaic cell exports also is powered for sensor node, single-chip microcomputer and A/D change-over circuit to lithium ion cell charging by charging circuit and voltage stabilizing circuit; Meanwhile, the thermoelectric cell that the solar-energy photo-voltaic cell back side is pasted is charged directly to ultracapacitor by booster circuit.Single chip circuit controls A/D converter timing and detects ultracapacitor both end voltage, when ultracapacitor both end voltage equals the withstand voltage 2.7V of ultracapacitor, single-chip microcomputer then opens switch switching circuit, and resistance energy photovoltaic cell is in parallel to lithium ion cell charging after booster circuit and too for ultracapacitor.
Traditional electric power management circuit adopts bridge rectifier and control circuit to combine, and stores electric energy; In order to increase the stored energy of storage capacitor, use modulate circuit and DC-DC circuit that the output voltage of management circuit is brought up to 3.3V, adopt match circuit and voltage-multiplying circuit to make the output voltage of management circuit reach the rated operational voltage of wireless sensing node, propose a kind of adaptive algorithm adjustment transducer duty ratio to improve the power output of energy acquisition management circuit.But, around electric wire, the electromagnetic field frequency of alternation is low frequency 50Hz, by the restriction of transducer winding inductance volume, the management circuit quality factor of conventional method are very low, and in light current magnetic energy density environments, the power output of circuit is not enough to drive wireless sensing node normally to work.
Therefore, be necessary the electric power management circuit designing a kind of high quality factor, make circuit be enough to drive electronic load normally to work.
Summary of the invention
The present invention is exactly for the problems referred to above, make up the deficiencies in the prior art, provide a kind of from full formula intelligent sensor electric power management circuit, the electric power management circuit of high quality factor, there is high power output and energy acquisition efficiency, make circuit be enough to drive electronic load normally to work.
For achieving the above object, the present invention adopts following technical scheme.
The present invention comprises coil transducer from full formula intelligent sensor electric power management circuit, electric power management circuit, its design feature is: the energy of electromagnetic field of alternation is given coil transducer by external electromagnetic field, energy of electromagnetic field is converted to electric energy by coil transducer, then by power delivery to up-conversion match circuit, up-conversion match circuit is connected with accumulator, accumulator and control circuit are interconnected, finally be connected with voltage-stabilizing output circuit again, control circuit starts voltage-stabilizing output circuit makes super capacitor discharge, electricity flows to temperature, current sensor and the work of driving wireless receiving and dispatching node, PC is connected with host node and carries out data processing and display, can realize electricity consumption status real time monitor.
As a preferred embodiment of the present invention, described coil transducer is made up of magnetic core and coiling enamelled wire thereon, when circulate in electric wire alternating current time, the coil be enclosed within around electric wire can be experienced the magnetic field of alternation and export electric energy.
As another kind of preferred version of the present invention, described electric power management circuit is made up of up-conversion match circuit, AC/DC rectification circuit, memory circuit, control circuit and voltage-stabilizing output circuit.Circuit rectification after frequency up-converted, coupling exports, by power storage in super capacitor.When super capacitor both end voltage reaches pre-determined threshold voltage, control circuit starts voltage stabilizing circuit work, will be stored in the fault offset in super capacitor, drives the work of wireless receiving and dispatching node.
As another preferred version of the present invention, described up-conversion match circuit is made up of transformer, bidirectional switch and matching capacitance, and two-coil transducer and matching capacitance form primary return and the secondary loop of transformer respectively.The primary return of transformer is provided with the turn-on and turn-off of a bidirectional switch, a control circuit control switch, by switch conduction and opening time internal inductance and electric capacity between concussion, realize frequency up-converted.
Beneficial effect of the present invention: the present invention is directed to management circuit quality factor very low, be stored in energy shortage in super capacitor to drive the problem from the work of full formula intelligent sensor of small size, propose a kind of from full formula intelligent sensor electric power management circuit, comprising up-conversion electric power management circuit improve the charge power of super capacitor.Reduce resonant capacitance value by the operating frequency improving circuit, increase the quality factor of circuit, make circuit produce higher power output in faint environmental energy, improve energy acquisition efficiency.
Accompanying drawing explanation
Fig. 1 is the theory structure schematic diagram of the present invention from full formula intelligent sensor electric power management circuit.
Fig. 2 is the circuit theory diagrams of the present invention from full formula intelligent sensor electric power management circuit.
Wherein, 1 be external electromagnetic field, 2 be coil transducer, 3 be up-conversion match circuit, 4 be accumulator, 5 be control circuit, 6 be voltage-stabilizing output circuit, 7 be temperature, current sensor, 8 is wireless receiving and dispatching node, 9 for PC.
Embodiment
As shown in Figure 1, for the present invention is from the theory structure schematic diagram of full formula intelligent sensor electric power management circuit.In figure, comprise coil transducer 2, electric power management circuit; The energy of electromagnetic field of alternation is given coil transducer 2 by external electromagnetic field 1, energy of electromagnetic field is converted to electric energy by coil transducer 2, then by power delivery to up-conversion match circuit 3, up-conversion match circuit 3 is connected with accumulator 4, accumulator 4 and control circuit 5 are interconnected, finally be connected with voltage-stabilizing output circuit 6, control circuit 5 starts voltage-stabilizing output circuit 6 makes super capacitor discharge again, and electricity flows to temperature, current sensor 7 and drives wireless receiving and dispatching node 8 to work; PC 9 is connected with host node and carries out data processing and display, can realize electricity consumption status real time monitor.
Claims (4)
1. from full formula intelligent sensor electric power management circuit, comprise coil transducer 2, electric power management circuit, it is characterized in that: the energy of electromagnetic field of alternation is given coil transducer (2) by external electromagnetic field (1), energy of electromagnetic field is converted to electric energy by coil transducer (2), then by power delivery to up-conversion match circuit (3), up-conversion match circuit (3) is connected with accumulator (4), accumulator (4) and control circuit (5) are interconnected, finally be connected with voltage-stabilizing output circuit (6) again, control circuit (5) starts voltage-stabilizing output circuit (6) makes super capacitor discharge, electricity flows to temperature, current sensor (7) and driving wireless receiving and dispatching node (8) work, PC (9) is connected with host node and carries out data processing and display, can realize electricity consumption status real time monitor.
2. according to claim 1 from full formula intelligent sensor electric power management circuit, it is characterized in that: described coil transducer (2) is made up of magnetic core and coiling enamelled wire thereon, when circulate in electric wire alternating current time, the coil be enclosed within around electric wire can be experienced the magnetic field of alternation and export electric energy.
3. according to claim 1 from full formula intelligent sensor electric power management circuit, it is characterized in that: described electric power management circuit is made up of up-conversion match circuit (3), AC/DC rectification circuit, memory circuit (4), control circuit (5) and voltage-stabilizing output circuit (6); Circuit rectification after frequency up-converted, coupling exports, by power storage in super capacitor; When super capacitor both end voltage reaches pre-determined threshold voltage, control circuit starts voltage stabilizing circuit work, will be stored in the fault offset in super capacitor, drives the work of wireless receiving and dispatching node.
4. according to claim 3 from full formula intelligent sensor electric power management circuit, it is characterized in that: described up-conversion match circuit (3) is made up of transformer, bidirectional switch and matching capacitance, and two-coil transducer and matching capacitance form primary return and the secondary loop of transformer respectively; The primary return of transformer is provided with the turn-on and turn-off of a bidirectional switch, a control circuit control switch, by switch conduction and opening time internal inductance and electric capacity between concussion, realize frequency up-converted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410372213.7A CN105322635A (en) | 2014-07-31 | 2014-07-31 | Self-protection intelligent sensor power supply management circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410372213.7A CN105322635A (en) | 2014-07-31 | 2014-07-31 | Self-protection intelligent sensor power supply management circuit |
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| Publication Number | Publication Date |
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| CN105322635A true CN105322635A (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410372213.7A Pending CN105322635A (en) | 2014-07-31 | 2014-07-31 | Self-protection intelligent sensor power supply management circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317385A (en) * | 2017-08-22 | 2017-11-03 | 姚静洁 | A kind of power-supply system gathered based on vibrational energy |
| CN109357848A (en) * | 2018-09-28 | 2019-02-19 | 四川工程职业技术学院 | A kind of measuring device and monitoring system of intelligent tool |
| CN109687540A (en) * | 2019-02-26 | 2019-04-26 | 重庆邮电大学 | A kind of electric wire magnetic field energy acquisition power supply |
-
2014
- 2014-07-31 CN CN201410372213.7A patent/CN105322635A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317385A (en) * | 2017-08-22 | 2017-11-03 | 姚静洁 | A kind of power-supply system gathered based on vibrational energy |
| CN109357848A (en) * | 2018-09-28 | 2019-02-19 | 四川工程职业技术学院 | A kind of measuring device and monitoring system of intelligent tool |
| CN109357848B (en) * | 2018-09-28 | 2024-04-19 | 四川工程职业技术大学 | Measuring device and monitoring system of intelligent cutter |
| CN109687540A (en) * | 2019-02-26 | 2019-04-26 | 重庆邮电大学 | A kind of electric wire magnetic field energy acquisition power supply |
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Legal Events
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |
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| WD01 | Invention patent application deemed withdrawn after publication |