EP2612417A2 - Procédé et dispositif d'alimentation cyclique et dispositif de détection le comportant - Google Patents
Procédé et dispositif d'alimentation cyclique et dispositif de détection le comportantInfo
- Publication number
- EP2612417A2 EP2612417A2 EP11773029.1A EP11773029A EP2612417A2 EP 2612417 A2 EP2612417 A2 EP 2612417A2 EP 11773029 A EP11773029 A EP 11773029A EP 2612417 A2 EP2612417 A2 EP 2612417A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- regulator
- capacitor
- switch
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
Definitions
- the present invention relates to a method and a cyclic feed device and a detection device comprising it. It applies, in particular, to the detection of a risk by an independent detector, that is to say non-powered by the electrical network, for example a domestic detector of smoke, heat, gas, especially carbonic , fire or flame.
- an independent detector that is to say non-powered by the electrical network, for example a domestic detector of smoke, heat, gas, especially carbonic , fire or flame.
- Standalone smoke and fire detectors should operate without external energy input. Their duration of use is therefore limited by the duration of discharge of a battery or accumulator. This discharge duration is, in the known detectors, too limited, which requires maintenance operations and manipulations all the more complex that the detectors are generally positioned in height, out of direct reach of a user. Indeed, the best positioning of such a detector is on the ceiling. Handling the detector presents difficulties, especially for people with reduced mobility. Because it is tedious to reach the test button, many users never test their detectors and they are no longer in working order.
- the present invention aims to remedy all or part of these disadvantages.
- the present invention is directed to a device for supplying an electronic circuit with cyclic operation, characterized in that it comprises:
- a reserve of electrical energy consisting of a battery or an electric accumulator, for supplying the entire electronic circuit
- a voltage regulator adapted to regulate the voltage supplied by the electrical energy reserve for supplying a part of the electronic circuit
- At least one component of the circuit being powered by the energy reserve independently of the regulator, at least one capacitor charged by the voltage regulator and supplying at least one component of the part of the electronic circuit supplied by the regulator,
- a switch adapted to deactivate the regulator, such that each said component supplied by the capacitor is then exclusively supplied with electricity by a said capacitor.
- the power supply device comprises a circuit for detecting a physical quantity powered by the regulator and a buzzer powered by the reserve of electrical energy at a voltage greater than the output voltage of the voltage regulator and controlled by a component powered by the detection circuit.
- the switch is controlled by a component powered by the capacitor.
- the electronic circuit comprises a central component dormant during power supply of the electronic circuit by the capacitor and active when the regulator is activated.
- the loss of charge of the capacitor is thus minimized since the central component, for example a microprocessor or a microcontroller, consumes, on the load of the capacitor, only its sleep energy.
- the central component for example a microprocessor or a microcontroller
- the switch is adapted to cause the activation of the regulator when the capacitor provides a voltage that does not allow the active operation of the central component but allows the dormant operation of the central component.
- the pressure drop of the capacitor is thus minimized since the central component consumes, on the load of the capacitor, only its sleep energy.
- the switch is adapted to cause the activation of the regulator when the capacitor provides a voltage that does not allow the active operation of the central component but allows the storage of data in memory of the central component.
- the pressure drop of the capacitor is thus minimized since the central component consumes, on the charge of the capacitor, only its data storage energy in memory.
- the power supply device comprises a control means of the electronic circuit which controls the operation of the electronic circuit in sleep mode when the regulator is deactivated.
- the pressure drop of the capacitor is thus minimized since the electronic circuit consumes, on the charge of the capacitor, only its sleep energy.
- the switch comprises a MosFet type transistor positioned either in a positive supply rail (P channel) or in a negative rail (N channel).
- the switch thus consumes, itself, very little energy.
- the power supply device comprises a means for comparing the voltage across the capacitor with a predetermined voltage value and a control means for the switch adapted to activate the regulator when the voltage across the capacitor is less than said predetermined value.
- the capacitor is thus recharged only when it is sufficiently discharged, which avoids recharging it prematurely.
- the predetermined voltage value is greater than the limit voltage for holding in memory the data held by each component supplied by the capacitor.
- the supply device comprises means for comparing the elapsed time since a deactivation of the regulator with a predetermined duration value and a control means activating the regulator adapted to activate the regulator when said elapsed time is greater than said predetermined value.
- timer time
- the predetermined duration value is less than the duration of passage of the capacitor voltage below the sleep holding limit voltage of each component supplied by the capacitor.
- the present invention relates to a device for detecting gas, flame, smoke heat or fire, which comprises a feed device object of the present invention.
- This detection device has the same advantages, goals and special features as the supply device object of the invention.
- the present invention is directed to a method for determining an electronic circuit operating in a cycle comprising a first operating phase requiring a higher consumption than the second operating phase consisting of the remainder of the cycle, characterized in that it includes the steps of:
- the regulator is permanently supplied by the energy source.
- a duty cycle is chosen so that the capacitor voltage at the end of total consumption is greater than a limit voltage for storing the state information of at least one component fed by the capacitor and less than a limit voltage for keeping said component powered by the capacitor in sleep.
- FIG. 1 represents a block diagram of a first embodiment of a detection device which is the subject of the present invention
- FIG. 2 represents, in the form of a logic diagram, the steps implemented in a first particular embodiment of the method that is the subject of the present invention adapted to the device illustrated in FIG. 1,
- FIG. 3 represents, in the form of a timing diagram, signals implemented by components of the device illustrated in FIG. 1;
- FIG. 4 represents a block diagram of a second embodiment of a detection device object of the present invention
- FIG. 5 represents, in the form of a timing diagram, signals implemented by components of the device illustrated in FIG. 4,
- FIG. 6 represents, in the form of a logic diagram, the steps implemented in a second particular embodiment of the method that is the subject of the present invention adapted to the device illustrated in FIG. 4,
- FIG. 7 represents, in the form of a logic diagram, a method for designing an electronic circuit with cyclic operation implementing the device that is the subject of the invention and FIG. 8 represents consumption and voltage curves as a function of the inverse of a duty cycle.
- an autonomous device for detecting a risk for example smoke, gas, fire, heat or flame.
- the scope of the present invention is not limited to this type of electronic device but extends to any electronic device operating in a cyclic manner, each cycle comprising a first phase of operation imposing a higher consumption than the second phase of operation consisting of the rest of the cycle.
- the first phase concerns the waking operation of a component implementing a program or an algorithm and the second phase concerns the sleep or waking of this component, or even its complete shutdown, without loss of data and memorized states.
- the detection device 105 which is the subject of the present invention comprises:
- a voltage regulator 1 15 adapted to regulate the voltage supplied by the electric energy reserve 1 10,
- the electrical energy reserve 1 10 is, for example, consisting of a battery or an accumulator.
- the source of electrical energy is adapted to provide a voltage for the operation of an alarm 140, for example a siren and / or beacon.
- the voltage regulator 1 15, the capacitor 120 and the detection circuit 125 are of a type known in the field of fire or smoke detectors.
- the detection circuit 125 implements a voltage lower than the voltage delivered by the power source 1 10. Components prohibiting the supply of the regulator 1 15 by the capacitor 120, are not shown in Figure 1 because they are well known to those skilled in the art.
- the voltage used by the alarm 140 is greater than or equal to nine volts while the operating voltage of the detection circuit 125 is less than six volts.
- a central component 135 of the detection circuit 125 is a microcontroller or an Asia circuit (acronym for "Application Specifies Integrated Circuit for an Application Specific Integrated Circuit") operating at a voltage of three or five volts, the voltage of nine volts being required to power a buzzer that must deliver 85db at three meters.
- the switch 130 is adapted to open the circuit comprising the energy reserve 1 10 upstream of the regulator 1 15.
- the switch 130 comprises a comparison means (represented by a triangle generally associated with a operational amplifier) of the electrical charge of each capacitor 120 with a predetermined limit value. This means of comparison is, in some embodiments, integrated with the central component 135 of the detection circuit 125.
- the switch 130 comprises a transistor (not shown), for example of the MosFet type, which is therefore of low loss voltage, positioned either in a positive supply rail (P-channel) or in a negative rail (N-channel).
- the central component 135 is put in sleep between two analyzes performed by the detector 105, so as to optimize the life of the battery.
- the active duty / sleep ratio is a few milliseconds for five to ten seconds of sleep.
- the duty cycle is greater than 100. Even more preferably, the duty ratio is greater than 300. It is noted that, in the case where the detector 105 implements radio communications, its wake-up phase may last from order of 10 ms while without radio communication, this phase is an order of magnitude lower, for example of the order of 1 ms. The cycle lasts, in total, from 3 to 6 seconds, or even 8 seconds.
- the duration of this cycle is reduced when the detection circuit needs to remove a doubt, for example if a low level of gas, smoke or heat has been detected but is less than a trigger level immediate alarm.
- the regulator 1 15 is deactivated, which saves the intrinsic consumption of the regulator (which is between 4 ⁇ and 10 ⁇ in general), which contributes to more than 80% of the total consumption (because of the extremely low value of the active duty cycle / sleep).
- a central component 135 is selected which has a very low storage voltage in memory of the data and states and a high speed of reset with stored data in memory.
- a PIC16F677 Microchip company (registered trademarks) has a power range from two to 5.5 volts active mode. However, in sleep mode, it can store data in internal memory (Sram) up to 1.5 volts.
- this central component 135 is supplied at 3.3 volts regulated, which is, in itself, necessary to guarantee the operation of the digital analog conversions, to release enough voltage on the output tabs to turn on a light. LED, etc., and the buffer capacitor 120 is charged to this value.
- the central component 135 stops, it can maintain the stored memory data in the state by being supplied by the buffer capacitor 120 until the voltage across this capacitor reaches 1.5 volts.
- the switch is closed, under the control of the comparator and switch 130 to recharge the buffer capacitor 120 and, preferably, to restart the central component 135 in active mode, with the data stored in memory from one cycle to the next .
- the voltage comparator takes the form of a weak voltage detector internal to the central component 135.
- the buffer capacitor 120 is dimensioned such that its discharge makes it possible to feed the central component 135 in sleep mode for the duration of the sleep (this temporal parameter can be parameterized in a microcontroller). Indeed, this dimensioning is a function of the consumption in sleep mode, the minimum acceptable tension and the duration of sleep (based on an adjustable watchdog). Of course, value tolerances and temperature conditions are taken into account to prevent the voltage across the capacitor 120 from going below the minimum voltage.
- the detector comprises a starting system (not shown) so that, at the first power-up, the switch is closed in a hardware and non-software manner. For example, an additional capacitor is provided which maintains the switch closure command during charging of the capacitor 120.
- FIG. 2 shows steps in the operation of a detection device such as that illustrated in FIG. These steps comprise, firstly, a step 205 of first start, at the first power up or change of energy source 1 10, closing of the switch 130, activation of the regulator 1 15 and starting the central component 135. Then, the central component controls or realizes iteratively:
- a step 220 of determination of detection of a physical quantity representative of a risk for example smoke, heat, gas,
- a step 225 for triggering an alarm and an alarm 140 in the event of detection, a step 225 for triggering an alarm and an alarm 140,
- the comparator commands the closing of the switch 130, during a step 245,
- the central component 135 In each cycle, in the absence of detection, the central component 135 is at a standstill. The switch 130 is then closed, which causes the activation of the regulator 1 15 and, consequently, the increase of the voltage across the capacitor 120. When this voltage is sufficient for the awakening of the central component 135, the component central 135 performs a reset ("reset") while recovering the data stored in memory. At the end of the detection phase, the central component 135 causes the switch 130 to open and stops. The capacitor 120, which supplies the detection circuit 125, gradually discharges until its voltage becomes lower than the limit voltage indicated in step 240. At this time, the cycle starts again.
- the switch 130 In case of detection, the switch 130 remains closed and the alarm 140 is triggered.
- this first embodiment has the advantage that it allows the voltage across the capacitor 120 to go below the dormant holding voltage of the central component. 135 but above the memory holding voltage data of the central component 135.
- the discharge time of the capacitor can thus be increased, compared to the case where the central component 135 should remain dormant.
- the duty cycle can thus be reduced since the discharge time of the capacitor is increased and the general consumption is very low.
- a voltage comparator must be provided since the central component 135 can not cause the closing of the switch at the end of the discharge of the capacitor 120 since it does not have the voltage necessary for its operation, even in operating mode. sleep.
- FIG. 4 shows that the second embodiment 155 of the detection device comprises the same components as the first embodiment illustrated in FIG. 1, with the exception of the switch 145 which replaces the switch with comparator 130 .
- the switch 145 is adapted to open the circuit comprising the energy reserve 1 10 upstream of the regulator 1 15.
- the switch 145 has no means for comparing the electric charge of each capacitor. 120 with a predetermined limit value.
- This comparison means is replaced by a timer ("timer") made by the central component 135, which controls the state of the switch 145.
- the switch 145 comprises a transistor (not shown), for example of the MosFet type, and therefore of low loss voltage, positioned either in a positive supply rail (P-channel) or in a negative rail (N channel).
- the central component 135 is put in sleep between two analyzes performed by the detector 105, so as to optimize the life of the battery.
- the active duty / sleep ratio is a few milliseconds for five to ten seconds of sleep.
- the duty cycle is greater than 100. Even more preferably, the duty ratio is greater than 300.
- the detector 105 implements radio communications
- its wake-up phase may last from order of 10 ms while without radio communication, this phase is an order of magnitude lower, for example of the order of 1 ms.
- the cycle lasts, in total, from 3 to 6 seconds, or even 8 seconds. Note that the duration of this cycle is reduced when the detection circuit needs to remove a doubt, for example if a low level of gas, smoke or heat has been detected but is less than a trigger level immediate alarm.
- the regulator 1 15 is deactivated, which saves the intrinsic consumption of the regulator (which is between 4 ⁇ and 10 ⁇ in general), which contributes to more than 80% of the total consumption (because of the extremely low value of the active duty cycle / sleep).
- a central component 135 is selected which has a wide range of supply voltages in sleep mode allowing it to be powered by a capacitor that discharges.
- a PIC16F677 Microchip company has a power range from two to 5.5 volts active mode.
- this central component 135 is supplied at 3.3 volts regulated, which is, in itself, necessary to guarantee the operation of the digital analog conversions, to release enough voltage on the output tabs to turn on a light. LED, etc., and the buffer capacitor 120 is charged to this value.
- the central component 135 goes into sleep mode, it can remain dormant by being powered by the buffer capacitor 120 until the voltage across the capacitor reaches two volts.
- the switch 145 is closed, under the control of the central component 135 to recharge the buffer capacitor 120 and operate the central component 135 in active mode.
- the buffer capacitor 120 is dimensioned such that its discharge makes it possible to feed the central component 135 in sleep mode for the duration of the sleep (this temporal parameter can be parameterized in a microcontroller). Indeed, this dimensioning is a function of the consumption in sleep mode, the minimum acceptable tension and the duration of sleep (based on an adjustable watchdog). Of course, value tolerances and temperature conditions are taken into account to prevent the voltage across the capacitor 120 from going below the minimum voltage.
- the detector comprises a starting system (not shown) so that, at the first power-up, the switch is closed in a hardware and non-software manner. For example, an additional capacitor is provided which maintains the switch closure command during charging of the capacitor 120.
- FIG. 6 shows steps in the operation of a detection device such as that illustrated in FIG. 4. These steps comprise, firstly:
- the central component controls or realizes iteratively: a step 615 for determining the detection of a physical quantity representative of a risk, for example smoke, heat, gas.
- a step 620 for triggering an alarm and an alarm 140 in the event of detection, a step 620 for triggering an alarm and an alarm 140,
- the central component 135 In each cycle, in the absence of detection, the central component 135 is dormant. When it enters the active mode, it commands the closing of the switch 145, which causes the activation of the regulator 1 15 and, consequently, the increase of the voltage across the capacitor 120.
- the central component 135 causes the opening of the switch 145 and goes into sleep mode.
- the capacitor 120 which feeds the detection circuit 125, gradually discharges without exceeding the minimum holding voltage of the central component 135 in sleep mode, thanks to the dimensioning mentioned above.
- the cycle begins again.
- this second embodiment has the advantage of not requiring a comparator. On the other hand, it requires that the voltage at the terminals of the capacitor never becomes lower than the limit voltage for holding in sleep.
- a step 705 for determining the operating cycle of the circuit and its central component it is a question of determining which functions are performed during the awakening phases of the central component, in a manner known to those skilled in the art,
- a step 710 for determining the components of the electronic circuit with the exception of its regulator, its regulator switch, its voltage holding capacitor at the terminals of the central component, its power source and, possibly, its central component,
- a step 715 for determining the energy source it is a question of determining the voltage delivered by the energy source, in particular in relation to the components having a high consumption, for example the alarm 140;
- a step 725 of choosing a regulator for supplying the components that are preferentially supplied with a reduced voltage it is a question of choosing a regulator having a low residual consumption but being able to supply these components;
- a step 730 directly supplying other components independently of the regulator, in particular the components requiring a voltage greater than the output voltage of the regulator;
- a step 735 of positioning a switch upstream of the regulator in order to be able to cut off its power supply and avoid this residual consumption a step 740 for positioning a capacitor between the regulator and the components supplied by the regulator, providing that the regulator does not consume energy stored in the capacitor;
- the minimum voltage 815 during the cycles, at the terminals of the voltage holding capacitor on the central component, the voltage limit value 820 is observed. for keeping the central component at rest and the limit value 825 for holding the data held by the central component in memory.
- the limit of use, in terms of the duty ratio, of the first embodiment, curve 845 corresponds to at the voltage limit 825 and is at the duty cycle value 840.
- the utilization limit, in terms of duty cycle, of the second embodiment, curve 810 corresponds to the voltage limit 820 and is at the duty cycle value 835.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Measurement Of Current Or Voltage (AREA)
- Fire Alarms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1056982A FR2964512B1 (fr) | 2010-09-02 | 2010-09-02 | Dispositif electronique autonome a consommation d'energie reduite et procede d'economie d'energie |
PCT/FR2011/052021 WO2012028833A2 (fr) | 2010-09-02 | 2011-09-02 | Procédé et dispositif d'alimentation cyclique et dispositif de détection le comportant |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2612417A2 true EP2612417A2 (fr) | 2013-07-10 |
Family
ID=43533187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11773029.1A Withdrawn EP2612417A2 (fr) | 2010-09-02 | 2011-09-02 | Procédé et dispositif d'alimentation cyclique et dispositif de détection le comportant |
Country Status (4)
Country | Link |
---|---|
US (1) | US9285819B2 (fr) |
EP (1) | EP2612417A2 (fr) |
FR (1) | FR2964512B1 (fr) |
WO (1) | WO2012028833A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011054729B4 (de) * | 2011-10-21 | 2013-12-19 | Nsm-Löwen Entertainment Gmbh | Unterhaltungsspielgerät |
FR3013143B1 (fr) * | 2013-11-14 | 2017-07-21 | Finsecur | Dispositif et procede de securisation d'un site |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4060709A (en) * | 1976-04-28 | 1977-11-29 | Hanson Charles G | Power supply control |
US5591212A (en) * | 1995-07-21 | 1997-01-07 | Medtronic, Inc. | Hybrid battery for implantable pulse generator |
US5966078A (en) * | 1997-02-19 | 1999-10-12 | Ranco Inc. | Battery saving circuit for a dangerous condition warning device |
US6104759A (en) * | 1997-09-15 | 2000-08-15 | Research In Motion Limited | Power supply system for a packet-switched radio transmitter |
FR2774487B1 (fr) * | 1998-02-05 | 2000-09-29 | Alsthom Cge Alcatel | Systeme d'alimentation optimisee pour circuit electronique |
US6525666B1 (en) * | 1998-12-16 | 2003-02-25 | Seiko Instruments Inc. | Power circuit |
AUPQ750500A0 (en) * | 2000-05-15 | 2000-06-08 | Energy Storage Systems Pty Ltd | A power supply |
GB2401261B (en) * | 2003-08-26 | 2005-07-13 | Nec Technologies | Apparatus for extending the standby time of a mobile unit |
US8077028B2 (en) * | 2006-02-15 | 2011-12-13 | Abl Ip Holding Llc | System and apparatus with self-diagnostic and emergency alert voice capabilities |
CN201153311Y (zh) * | 2008-01-30 | 2008-11-19 | 赵恩东 | 带有扩音电路的手机 |
US7786620B2 (en) * | 2008-02-15 | 2010-08-31 | Honeywell International Inc. | Battery supplementing super capacitor energy storage charge and discharge converter |
-
2010
- 2010-09-02 FR FR1056982A patent/FR2964512B1/fr active Active
-
2011
- 2011-09-02 EP EP11773029.1A patent/EP2612417A2/fr not_active Withdrawn
- 2011-09-02 US US13/820,707 patent/US9285819B2/en active Active
- 2011-09-02 WO PCT/FR2011/052021 patent/WO2012028833A2/fr active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2012028833A2 * |
Also Published As
Publication number | Publication date |
---|---|
US20130201028A1 (en) | 2013-08-08 |
FR2964512A1 (fr) | 2012-03-09 |
FR2964512B1 (fr) | 2013-06-28 |
WO2012028833A3 (fr) | 2012-05-31 |
WO2012028833A2 (fr) | 2012-03-08 |
US9285819B2 (en) | 2016-03-15 |
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