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EP1836434A2 - Systeme de securite pour appareils, pour le fonctionnement securise d'appareils a moteur presentant un danger, notamment pour des appareils de jardinage et des outils - Google Patents

Systeme de securite pour appareils, pour le fonctionnement securise d'appareils a moteur presentant un danger, notamment pour des appareils de jardinage et des outils

Info

Publication number
EP1836434A2
EP1836434A2 EP05850250A EP05850250A EP1836434A2 EP 1836434 A2 EP1836434 A2 EP 1836434A2 EP 05850250 A EP05850250 A EP 05850250A EP 05850250 A EP05850250 A EP 05850250A EP 1836434 A2 EP1836434 A2 EP 1836434A2
Authority
EP
European Patent Office
Prior art keywords
hazardous
field
backup system
equipment
alternating field
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Withdrawn
Application number
EP05850250A
Other languages
German (de)
English (en)
Inventor
Wolfgang Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microchip Technology Germany GmbH
Original Assignee
Ident Technology AG
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 Ident Technology AG filed Critical Ident Technology AG
Publication of EP1836434A2 publication Critical patent/EP1836434A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D75/00—Accessories for harvesters or mowers
    • A01D75/20—Devices for protecting men or animals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/04—Apparatus for trimming hedges, e.g. hedge shears
    • A01G3/047—Apparatus for trimming hedges, e.g. hedge shears portable
    • A01G3/053—Apparatus for trimming hedges, e.g. hedge shears portable motor-driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/148—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using capacitive technology
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/18—Control arrangements requiring the use of both hands
    • F16P3/20—Control arrangements requiring the use of both hands for electric control systems

Definitions

  • the invention is directed to a system for the secured
  • the invention has for its object to provide solutions through which arise in the operation of motor equipment, especially manually manageable garden and forestry equipment, as well as power tools in terms of operational safety advantages.
  • This object is achieved in a first abstract description he inventungs according to a device backup system to avert hazardous operating situations in the use of motor-driven devices, the system
  • Field generating means comprises, for generating a capacitive spatial change field
  • detection means comprises, for detecting a danger and / or Abschalttrelevant categorized state by detecting changes in the field structure in the Emdrmgung an Obj ectes in the field of j by a field.
  • An evaluation circuit is preferably provided for the classification of the danger and / or switch-off-relevant state, wherein this evaluation circuit is coupled to particular detection means and the detection means are designed so that they can be detected via these field-electrical changes in the environment of the hazardous structure.
  • the inventive system may bessteichend.
  • the capacitive alternating field can be generated by an electrode device that forms part of the hazard-relevant structure.
  • Electrode device can be generated, which is arranged m neighborhood to the hazard-relevant structure. Furthermore, the capacitive alternating field can also be generated by an electrode device which is arranged in an access area to the hazardous structure.
  • the alternating field can be coupled in particular in combination with the aforementioned measures in a power supply cable, so that, for example, in unzuläs siger approach to the cable, the operation of the device is suppressed.
  • Switching device can be provided in the plug-side end region of the power supply cable. It is possible to cause the control of the switching device via signal events, which are coupled into the cable.
  • the capacitive alternating field can also be generated by coupling into the user.
  • the coupling can be performed by a user-side leading circuit device, for. B. IdentCard can be realized. It is also possible to accomplish the coupling by means of an electrode device which is arranged in a grip region or otherwise in the case of proper handling of a device structure close to the user.
  • the capacitive alternating field can be coupled into the user so that this forms an aura surrounding the user. Also in this case, the capacitive alternating field can be generated by a device-side system component, or by a system component to be supplied by the user.
  • Carries information content This information content can be evaluated, for example, as proof of authorization. Under threat in the present context, in particular, but not exclusively danger by pinching, crushing, cutting, heat, cold and electricity to understand.
  • the invention is also directed to the components of said system as such. Furthermore, the invention also includes the implementable by the aforementioned apparatus measures protection method for switching off the drive hazardous structures in devices, especially garden or forestry equipment or other cutting tools.
  • the erfmdungsgedorfe device fuse system is particularly suitable for authorized verification of cutting Kleingeraten with other protection features.
  • protection against injury can be implemented as protection against injury:
  • Sensor protects cables from being cut, and therefore also people Sensor protects people from injury o Sensor protects the operator himself o Sensor protects unauthorized persons o Sensor protects helpers
  • the invention is particularly directed to the protection of electric motor-driven cutting garden tools, such as hedge trimmers, hacklers, lawnmowers, power saws, etc.
  • Such devices are often readily accessible to persons (e.g., children) and potentially potentially hazardous to use.
  • the present invention advantageously partially solves the known problems in a contactless way.
  • a capacitive alternating field such as an aura is generated around an authorized operator, his helpers and / or the cable feed line.
  • the proof of this aura by a suitable detector leads with proper handling to the switching on of the device.
  • the supply of an alternating field permitting the switching on can also take place via personal protective equipment, which can also consist of several parts.
  • both the cutting system and the cable can be connected as receiving devices to a sensor system comprising an LC network.
  • the protective field is generated by the cutting system. If this protective field is coupled into the cable, it is switched off.
  • Figure 1 is a schematic representation to illustrate the inventive concept for securing a motor device
  • Figure 2 is a schematic representation to illustrate the further mode of action of a system according to the invention.
  • Figure 3 is a simplified representation of a designed as a donor card element which serves the coupling of a quasi-static alternating field in a user;
  • Figure 4 is a schematic representation of the signal transmission between a donor and a receiver with the involvement of the limbs of a user;
  • Figure 5 is a schematic representation of a receiving and evaluation system capable of displaying different proximity states
  • Figure 1 shows Schemata.seh the construction of a Kraftgerates, which includes a switching and braking device and an electric motor.
  • the invention provides a generator which can output a medium-frequency AC voltage (eg 200 kHz) capacitively to the film A. This is preferably housed in the handle near the switch.
  • a second film B is located for example in an additional handle. Its enclosure with the other hand is absolutely necessary.
  • a user carries a user card
  • a helper carries a protection card.
  • These cards generate data-modulated alternating fields which are transmitted capacitively to the skin of the respective wearer and form a "synthetic aura M which can be detected, detected and demodulated by a suitable receiver at a definable distance of 0-30 cm. If the user authorized in this way activates the device, the internal controller first checks via the foil B the authorization code of the user card transmitted via the skin. At the same time, it is ensured that the user actually uses the handle (accommodated in the sheet B).
  • the device can be started on it.
  • the controller then turns off the film B and the film C on.
  • This is capacitively connected to the cutting device, on film A is now a modulated AC voltage signal (pulse), which can be modulated with a Abschaltcode, on the skin of the operator.
  • the pulse is tension designed to increase the "synthetic aura" around the operator, and if this comes too close to the cutter body parts, the receiver will detect it and immediately stop the machine until the operator removes his limbs from the danger zone In this way, a serious injury can be prevented in a simple manner, since the shut-off signal from foil A also acts on the supply cable, this is likewise protected from severing, and the operator is protected from a possibly resulting electric shock.
  • Helpers can be equipped with a device (eg in the form of a check card) that generates a switch-off AC signal and capacitively couples it to the wearer's skin so that the helper also forms a "synthetic protective aura.” If the helper gets too close to the cutting device , the receiver can detect this and stop the motor before injury.
  • a device eg in the form of a check card
  • the invention provides a further circuit by which it can be ensured that certain areas of a cutting tool are not touched.
  • An encoder consists of an oscillator, which preferably generates a square wave signal (approximately 20OkHz). This signal can be boosted via a series resonant circuit, if necessary. Thereafter, it is guided on a conductive surface (e.g., copper foil). This forms one side of a capacitor. The other is formed by the human skin.
  • a conductive surface e.g., copper foil
  • switch-on and switch-off signals are distinguished. While operators are driving the switch-in, helpers should carry switch-off transmitters. This ensures that the helper can not operate the equipment, but disable it when a helper comes in the danger zone of the snow device.
  • the operator himself is protected by the switch-off signal (foil A) present in the garden implement, which also secures the supply cable from being severed.
  • the device can only be switched on if the operator carries a switch-on device AND the device is handled as intended. Since the device does not start without a (coded) switch-on signal, this effect can also be used eg for theft and / or parental control.
  • FIG. 4 shows the structure of a transmitter and a receiver for the "synthetic aura" of capacitive alternating fields.
  • a dielectric (e.g., copper) receiver sheet plastic of the device housing or handles
  • An (extremely weak) AC circuit is closed via the human skin (for example between foil A and foil B, so-called bodyb ⁇ dge).
  • Portable donors make this circle parasitic to earth.
  • As input amplifiers i.a. high impedance operational amplifiers (e.g., Max9003), transimpedance amplifiers (e.g., TEMIC U2538B with integrated decoder), or parallel resonant circuit comparators.
  • FIG. 6 shows further design possibilities of the system according to the invention:
  • An external receiver can be connected to a PC via an interface
  • a spiral arrangement of the internal coupling surfaces can be used to detect the enclosure of a handle by hand.
  • a second signal couples into the surface if it is not shielded by an enclosing hand (Faraday cage).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Scissors And Nippers (AREA)
  • Harvester Elements (AREA)
  • Portable Power Tools In General (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

L'invention concerne un système visant au fonctionnement sécurisé d'appareils à moteur présentant un danger, notamment d'appareils de jardinage tels que, par exemple, des cisailles pour haies et bordures, des tronçonneuses et des tondeuses à gazon. L'invention vise à proposer des solutions présentant des avantages en termes de sécurité de fonctionnement lors de l'utilisation d'appareils à moteur, notamment d'appareils de jardinage et de sylviculture de manipulation manuelle, et d'outils mécaniques. A cet effet, un système de sécurité pour appareils sert à éviter des situations de fonctionnement présentant un danger lors de l'utilisation d'appareils à moteur, ce système comprenant des moyens de préparation de champ. pour générer un champ alternatif capacitif dans l'espace, et des moyens de saisie, pour saisir un état pouvant être considéré comme présentant un danger et/ou susceptible d'être déconnecté, par la saisie d'effets électriques de champ lors de la pénétration d'un objet dans la zone saisie par le champ.
EP05850250A 2004-12-09 2005-12-09 Systeme de securite pour appareils, pour le fonctionnement securise d'appareils a moteur presentant un danger, notamment pour des appareils de jardinage et des outils Withdrawn EP1836434A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004059582 2004-12-09
PCT/EP2005/013255 WO2006061248A2 (fr) 2004-12-09 2005-12-09 Systeme de securite pour appareils, pour le fonctionnement securise d'appareils a moteur presentant un danger, notamment pour des appareils de jardinage et des outils

Publications (1)

Publication Number Publication Date
EP1836434A2 true EP1836434A2 (fr) 2007-09-26

Family

ID=36570865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05850250A Withdrawn EP1836434A2 (fr) 2004-12-09 2005-12-09 Systeme de securite pour appareils, pour le fonctionnement securise d'appareils a moteur presentant un danger, notamment pour des appareils de jardinage et des outils

Country Status (3)

Country Link
US (1) US20100194209A1 (fr)
EP (1) EP1836434A2 (fr)
WO (1) WO2006061248A2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006046515B4 (de) * 2006-09-29 2015-12-31 Ident Technology Ag Kraftfahrzeugsitz mit einem Sensorsystem
US9298333B2 (en) 2011-12-22 2016-03-29 Smsc Holdings S.A.R.L. Gesturing architecture using proximity sensing
GB2513397A (en) * 2013-04-26 2014-10-29 Colin Andrew Reason Main Power Cable Proximity Sensor for Electric Motor driven garden trimming products
US10759418B2 (en) 2014-12-29 2020-09-01 Husqvarna Ab System and method for proximity-based control of outdoor power machines
US9747760B2 (en) 2015-02-10 2017-08-29 International Business Machines Corporation Safety equipment criteria verification
CN110119136B (zh) * 2018-02-05 2024-12-13 苏州宝时得电动工具有限公司 自移动设备及其障碍物检测方法
US10529216B1 (en) 2018-06-19 2020-01-07 Rachel Thibault Personal proximity sensor systems
SE1950847A1 (en) 2019-07-04 2020-10-20 Husqvarna Ab Power tool operator protection system and method
CN115803152B (zh) * 2020-07-01 2025-11-28 费斯托工具有限责任公司 电动工具和操作电动工具的方法
CN118973382A (zh) * 2022-04-20 2024-11-15 意玛克股份公司 景观美化装置
US20230364821A1 (en) * 2022-05-12 2023-11-16 Chain Orthopedics, Llc Controls, Feedback, Cutting Variations, and Accessories for Chain Saws

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US3953770A (en) * 1974-07-11 1976-04-27 Jinnosuke Hayashi Safety equipment for machinery used in processing plates, etc.
US4532501A (en) * 1982-02-02 1985-07-30 E. I. Du Pont De Nemours And Company Capacitively coupled machine tool safety system
IT1252015B (it) * 1991-11-28 1995-05-27 Black & Decker Inc Utensile elettrico con sensori di impugnamento
DE69624124T2 (de) * 1995-09-25 2003-06-26 Jorn Sorensen Verfahren und vorrichtung zur erfassung der distanz zwischen einem ersten objekt und einem zweiten objekt
US20020111702A1 (en) * 2001-02-15 2002-08-15 Angel Jeffrey R. Factory personnel monitors
DE10132031A1 (de) * 2001-07-03 2003-01-23 Texas Instruments Deutschland Verfahren zur Ermöglichung des authentifizierten Zugangs eines Individuums zu einem geschützten Bereich und Sicherheitssystem zur Durchführung des Verfahrens
ES2315523T3 (es) * 2002-08-15 2009-04-01 Ident Technology Ag Dispositivo para generacion selectiva de señales de conmutacion.
US6922153B2 (en) * 2003-05-13 2005-07-26 Credo Technology Corporation Safety detection and protection system for power tools

Non-Patent Citations (1)

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Title
See references of WO2006061248A2 *

Also Published As

Publication number Publication date
US20100194209A1 (en) 2010-08-05
WO2006061248A2 (fr) 2006-06-15
WO2006061248A3 (fr) 2006-08-03

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