WO2023170456A1 - Dispositif et procédé d'avertissement de présence d'un champ électrique - Google Patents

Dispositif et procédé d'avertissement de présence d'un champ électrique Download PDF

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Publication number
WO2023170456A1
WO2023170456A1 PCT/IB2022/054320 IB2022054320W WO2023170456A1 WO 2023170456 A1 WO2023170456 A1 WO 2023170456A1 IB 2022054320 W IB2022054320 W IB 2022054320W WO 2023170456 A1 WO2023170456 A1 WO 2023170456A1
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WO
WIPO (PCT)
Prior art keywords
unit
electric field
oscillator
signal provided
voltage
Prior art date
Application number
PCT/IB2022/054320
Other languages
English (en)
Inventor
Bharath S
Original Assignee
Bharath S
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bharath S filed Critical Bharath S
Publication of WO2023170456A1 publication Critical patent/WO2023170456A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning

Definitions

  • Embodiments of the present disclosure relate to the field of safety equipments and more particularly to a device and a method for alerting presence of an electric field.
  • the persons may be subjected to painful and fatal electric shocks when the persons come in contact with the live electrical circuits.
  • the persons used to de-energize the live electrical circuits prior to performing any operations on or around the live electrical circuits, the persons used to de-energize the live electrical circuits.
  • electrical circuits may get re-energized during the operations due to various reasons causing the persons face the risk of electric shocks.
  • the various reasons may include, a faulty switch, induction effects, static charges, and the like.
  • Equipments which are capable of detecting presence of an electric field on or around the live electrical circuits may be used to alert the persons regarding the live electrical circuits. But the equipments which are currently being used is inefficient in detecting the presence of the electric field on or around the live electrical circuits carrying alternating current (AC) or direct current (DC). Also, the equipments are bulky and less portable. The equipments are energy intensive thereby restricting operational time of the equipments.
  • AC alternating current
  • DC direct current
  • a device for alerting presence of an electric field includes an antenna unit adapted to provide a voltage signal upon detecting the electric field.
  • the device also includes an amplifier unit operatively coupled to the antenna unit.
  • the amplifier unit includes a plurality of transistors mutually coupled in a darlington pair configuration. The plurality of transistors are adapted to amplify the voltage signal provided by the antenna unit to provide an amplified voltage signal.
  • the device further includes a switching unit operatively coupled to the amplifier unit.
  • the switching unit is adapted to switch supply voltage provided by a voltage source upon receiving the amplified voltage signal provided by the amplifier unit.
  • the device also includes an oscillator unit operatively coupled to the switching unit.
  • the oscillator unit is adapted to provide an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit.
  • the device further includes an alert unit operatively coupled to the oscillator unit.
  • the alert unit is adapted to provide one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit, thereby alerting presence of the electric field.
  • a method for alerting presence of an electric field includes providing, by an antenna unit, a voltage signal upon detecting an electric field.
  • the method also includes amplifying, by a plurality of transistors of an amplifier unit, the voltage signal provided by the antenna unit to provide an amplified voltage signal.
  • the plurality of transistors are mutually coupled in a darlington pair configuration.
  • the method further includes switching, by a switching unit, supply voltage provided by a voltage source upon receiving the amplified voltage signal provided by the amplifier unit.
  • the method also includes providing, by an oscillator unit, an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit.
  • the method further includes providing, by an alert unit, one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit, thereby alerting presence of the electric field.
  • FIG. 1 is a circuit diagram representation of a device for alerting presence of an electric field in accordance with an embodiment of the present disclosure
  • FIG. 2 is a schematic representation of one embodiment of the system of FIG. 1 depicting a top view and a bottom view of the device in accordance with an embodiment of the present disclosure
  • FIG. 3 is a flow chart representing the steps involved in a method for alerting presence of an electric field in accordance with an embodiment of the present disclosure.
  • Embodiments of the present disclosure relate to a device and a method for alerting presence of an electric field.
  • a device and a method for alerting presence of an electric field is provided.
  • the device includes an antenna unit adapted to provide a voltage signal upon detecting the electric field.
  • the device also includes an amplifier unit operatively coupled to the antenna unit.
  • the amplifier unit includes a plurality of transistors mutually coupled in a darlington pair configuration. The plurality of transistors are adapted to amplify the voltage signal provided by the antenna unit to provide an amplified voltage signal.
  • the device further includes a switching unit operatively coupled to the amplifier unit.
  • the switching unit is adapted to switch supply voltage provided by a voltage source upon receiving the amplified voltage signal provided by the amplifier unit.
  • the device also includes an oscillator unit operatively coupled to the switching unit.
  • the oscillator unit is adapted to provide an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit.
  • the device further includes an alert unit operatively coupled to the oscillator unit.
  • the alert unit is adapted to provide one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit, thereby alerting presence of the electric field.
  • FIG. 1 is a circuit diagram representation of a device (10) for alerting presence of an electric field in accordance with an embodiment of the present disclosure.
  • the device (10) includes an antenna unit (20) adapted to provide a voltage signal upon detecting an electric field.
  • the antenna unit (20) may include, but not limited to, a wire probe antenna, a helical antenna, a microstrip patch antenna, a whip antenna and the like.
  • the voltage signal provided by the antenna unit (20) may be proportional to intensity of the electric field.
  • the device (10) also includes an amplifier unit (30) operatively coupled to the antenna unit (20).
  • the amplifier unit (30) includes a plurality of transistors (40) mutually coupled in a darlington pair configuration.
  • the plurality of transistors (40) may include, but not limited to, bipolar junction transistors, field effect transistors, insulated gate bipolar transistors and the like.
  • the plurality of transistors (40) are adapted to amplify the voltage signal provided by the antenna unit (20) to provide an amplified voltage signal.
  • the device (10) further includes a switching unit (50) operatively coupled to the amplifier unit (30).
  • the switching unit (50) is adapted to switch supply voltage provided by a voltage source (60) upon receiving the amplified voltage signal provided by the amplifier unit (30).
  • the switching unit (50) may include, but not limited to, thyristors, triode for alternating current (TRIAC), diode for alternating current (DIAC) and the like.
  • the switching unit (50) may include at least one of a semiconductor switch (90) adapted to operate in saturation region.
  • the semiconductor switch (90) may be a transistor.
  • the voltage source (60) may include, but not limited to, at least one of a battery, solar cell, biofuel cell, super capacitors, thermo electric generators, piezo electric generators, triboelectric generators, and radio frequency energy harvesters.
  • the voltage source (60) may be a lithium-ion battery.
  • the voltage source (60) may be charged via a charging port (140) associated with the voltage source (60).
  • the device (10) also includes an oscillator unit (70) operatively coupled to the switching unit (50).
  • the oscillator unit (70) is adapted to provide an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit (50).
  • the predefined frequency of the oscillator unit (70) may be adjusted by means of a resistor (150) connected across terminals of the oscillator unit (70).
  • the oscillator unit (70) may include a voltage stabilizer (130) connected across the terminals of the oscillator unit (70). In such an embodiment, the voltage stabilizer (130) may be adapted to provide stable voltage to the oscillator unit (70).
  • the voltage stabilizer (130) may include a capacitor.
  • the oscillator unit (70) may include an oscillator chip.
  • the device (10) further includes an alert unit (80) operatively coupled to the oscillator unit (70).
  • the alert unit (80) is adapted to provide one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit (70), thereby alerting presence of the electric field.
  • the alert unit (80) may be adapted to receive the oscillatory signal provided by the oscillator unit (70) via a booster unit (120) adapted to boost signal strength of the oscillatory signal.
  • the booster unit (120) may include an amplifying element (160) adapted to be operated in active region.
  • the amplifying element (160) may be a transistor.
  • the one or more transducers may include an audio speaker (100) adapted to provide an audio alert corresponding the oscillatory signal provided by the oscillator unit (70).
  • the one or more transducers may include one or more light emitting diodes (110) adapted to provide a visual alert corresponding the oscillatory signal provided by the oscillator unit (70).
  • the one or more transducers may include a vibration motor adapted to provide a vibration alert corresponding the oscillatory signal provided by the oscillator unit (70).
  • the alert unit (80) may include a control switch adapted to disable the one or more transducers for a predefined time.
  • the predefined time may be administered by a timer circuit.
  • the alert unit (80) may include a test button adapted to test operational readiness of the one or more transducers.
  • Top view (170) and bottom view (180) of the device (10) is shown in FIG. 2.
  • FIG. 2 is a schematic representation of one embodiment of the system of FIG. 1 depicting a top view (170) and a bottom view (180) of the device (10) in accordance with an embodiment of the present disclosure.
  • the device (10) may be a wearable device.
  • the device (10) may be secured to body parts of the operator by one or more fasteners (190).
  • the one or more fasteners (190) may include, but not limited to, one or more snaps, one or more straps, a hook and a loop fastener and the like.
  • the device (10) may get activated when the one or more fasteners (190) are in a closed position. In a specific embodiment, the device (10) may get deactivated when the one or more fasteners (190) are in an open position.
  • the antenna unit (20) may be capable of sensing the electric field generated by alternating current (AC) and direct current (DC).
  • the one or more light emitting diodes (110) may constitute a display (200) for providing visual alerts.
  • the amplifier unit (30), the switching unit (50), the oscillator unit (70), the stabilizer (130), and the booster unit (120) may be embedded in a printed circuit board (210).
  • the printed circuit board (210), the voltage source (60) and the audio speaker (100) may be provided on a platform (220) coupled to the one or more fasteners (190) along with the antenna unit (20), the audio speaker (100) and the voltage source (60).
  • FIG. 3 is a flow chart representing the steps involved in a method (500) for alerting presence of an electric field in accordance with an embodiment of the present disclosure.
  • the method (500) includes providing a voltage signal upon detecting an electric field in step 510.
  • providing a voltage signal upon detecting an electric field includes providing a voltage signal upon detecting an electric field by an antenna unit.
  • the antenna unit may include, but not limited to, a wire probe antenna, a helical antenna, a microstrip patch antenna, a whip antenna and the like.
  • the device may be a wearable device. In such an embodiment, the device may be secured to body parts of an operator by one or more fasteners.
  • the one or more fasteners may include, but not limited to, one or more snaps, one or more straps, a hook and loop fastener and the like.
  • the device may get activated when the one or more fasteners are in a closed position. In a specific embodiment, the device may get deactivated when the one or more fasteners are in an open position.
  • the antenna unit may be capable of sensing the electric field generated by alternating current (AC) and direct current (DC).
  • the voltage signal provided by the antenna unit may be proportional to intensity of the electric field.
  • the method (500) also includes amplifying the voltage signal provided by the antenna unit to provide an amplified voltage signal in step 520.
  • amplifying the voltage signal provided by the antenna unit to provide an amplified voltage signal includes amplifying the voltage signal provided by the antenna unit to provide an amplified voltage signal by a plurality of transistors of an amplifier unit.
  • the plurality of transistors may include, but not limited to, bi-polar junction transistors, field effect transistors, insulated gate bipolar transistors and the like. The plurality of transistors are adapted to amplify the voltage signal provided by the antenna unit to provide an amplified voltage signal.
  • the method (500) further includes switching supply voltage provided by a voltage source upon receiving the amplified voltage signal provided by the amplifier unit in step 530.
  • switching supply voltage provided by a voltage source upon receiving the amplified voltage signal provided by the amplifier unit includes switching supply voltage provided by a voltage source upon receiving the amplified voltage signal provided by the amplifier unit by a switching unit.
  • the switching unit may include, but not limited to, thyristors, triode for alternating current (TRIAC), diode for alternating current (DIAC) and the like.
  • the switching unit may include at least one of a semi-conductor switch adapted to be operated in saturation region. In such an embodiment, the semi-conductor switch may be a transistor.
  • the voltage source may include, but not limited to, at least one of a battery, solar cell, biofuel cell, super capacitors, thermo electric generators, piezo electric generators, triboelectric generators, and radio frequency energy harvesters.
  • the voltage source may be a lithium ion battery.
  • the lithium ion battery may be charged via a charging port associated with the lithium ion battery.
  • the method (500) also includes providing an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit in step 540.
  • providing an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit includes providing an oscillatory signal at a predefined frequency upon receiving the supply voltage switched by the switching unit by an oscillator unit.
  • the predefined frequency of the oscillator unit may be adjusted by means of a variable resistor connected across terminals of the oscillator unit.
  • the oscillator unit may include a voltage stabilizer connected across the terminals of the oscillator unit. In such an embodiment, the voltage stabilizer may be adapted to provide stable voltage to the oscillator unit. In one embodiment, the voltage stabilizer may include a capacitor.
  • the oscillator unit may include an oscillator chip.
  • the method (500) further includes providing one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit, thereby alerting presence of the electric field in step 550.
  • providing one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit, thereby alerting presence of the electric field includes providing one or more alerts to an operator by modulating output of one or more transducers corresponding to the oscillatory signal provided by the oscillator unit, thereby alerting presence of the electric field by an alert unit.
  • the alert unit may be adapted to receive the oscillatory signal provided by the oscillator unit via a booster unit adapted to boost signal strength of the oscillatory signal.
  • the booster unit may include one or more transistors adapted to be operated in active region.
  • the one or more transducers may include an audio speaker adapted to provide an audio alert corresponding the oscillatory signal provided by the oscillator unit.
  • the one or more transducers may include one or more light emitting diodes adapted to provide a visual alert corresponding the oscillatory signal provided by the oscillator unit.
  • the one or more transducers may include a vibration motor adapted to provide a vibration alert corresponding the oscillatory signal provided by the oscillator unit.
  • the alert unit may include a control switch adapted to disable the one or more transducers for a predefined time.
  • the predefined time may be administered by a timer circuit.
  • the alert unit may include a test button adapted to test operational readiness of the one or more transducers.
  • the antenna unit may be capable of sensing the electric field generated by alternating current (AC) and direct current (DC).
  • the one or more light emitting diodes may constitute a display for providing visual alerts.
  • the amplifier unit, the switching unit, the oscillator unit, the stabilizer, and the booster unit may be embedded in a printed circuit board.
  • the printed circuit board may be provided on a platform coupled to the one or more fasteners along with the antenna unit, the audio speaker and the voltage source.
  • Various embodiments of the device and a method for alerting presence of an electric field described above enable various advantages. Provision of the antenna unit, the amplifier unit, the switching unit, the oscillator unit and the alert unit capable of detecting the electric field generated by either alternating current (AC) or direct current (DC) thereby making the device efficient. Provision of the one or more fasteners to secure the device to the body parts of the operator provides portability to the device. Provision of the inbuilt voltage source provides standalone functionality to the device. The device is compact, and durable. Various components used to fabricate the device is readily available and cheap thereby making the device cost effective. Provision of the alert unit provides situational awareness to the operator by providing one or more alerts upon detecting the electric field. Also, the components are energy efficient thereby ensuring extended operation of the device.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

L'invention concerne un dispositif (10) et un procédé (500) permettant de signaler la présence d'un champ électrique. Le dispositif comprend une unité d'antenne (20) pour fournir un signal de tension lors de la détection du champ électrique. Le dispositif comprend une unité d'amplification (30) comprenant des transistors mutuellement couplés dans une configuration de paire Darlington. Les transistors amplifient le signal de tension fourni par l'unité d'antenne pour fournir un signal de tension amplifié. Le dispositif comprend une unité de commutation (50) conçue pour commuter la tension d'alimentation fournie par une source de tension (60) lors de la réception du signal de tension amplifié fourni par l'unité d'amplificateur. Le dispositif comprend une unité d'oscillateur (70) pour fournir un signal oscillatoire à une fréquence prédéfinie lors de la réception de la tension d'alimentation commutée par l'unité de commutation. Le dispositif comprend une unité d'avertissement (80) pour avertir l'opérateur de la présence d'un champ électrique en modulant la sortie des transducteurs correspondant au signal oscillatoire fourni par l'unité d'oscillation.
PCT/IB2022/054320 2022-03-11 2022-05-10 Dispositif et procédé d'avertissement de présence d'un champ électrique WO2023170456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202241013470 2022-03-11
IN202241013470 2022-03-11

Publications (1)

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WO2023170456A1 true WO2023170456A1 (fr) 2023-09-14

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309690A (en) * 1966-05-19 1967-03-14 Melville M Moffitt Helmet with detecting circuit mounted thereon for indicating approach to an energized powerline
US3786468A (en) * 1972-09-22 1974-01-15 M Moffitt Electric field proximity safety alarm
US11009532B2 (en) * 2016-12-12 2021-05-18 Safeguard Equipment, Inc. Energy detection warning device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309690A (en) * 1966-05-19 1967-03-14 Melville M Moffitt Helmet with detecting circuit mounted thereon for indicating approach to an energized powerline
US3786468A (en) * 1972-09-22 1974-01-15 M Moffitt Electric field proximity safety alarm
US11009532B2 (en) * 2016-12-12 2021-05-18 Safeguard Equipment, Inc. Energy detection warning device

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