WO2015025069A1 - Device for preventing work accidents - Google Patents
Device for preventing work accidents Download PDFInfo
- Publication number
- WO2015025069A1 WO2015025069A1 PCT/ES2014/070653 ES2014070653W WO2015025069A1 WO 2015025069 A1 WO2015025069 A1 WO 2015025069A1 ES 2014070653 W ES2014070653 W ES 2014070653W WO 2015025069 A1 WO2015025069 A1 WO 2015025069A1
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- WO
- WIPO (PCT)
- Prior art keywords
- work tool
- detector circuit
- conductance
- worker
- skin
- Prior art date
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Classifications
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- 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
Definitions
- the present invention belongs to the field of occupational safety and protection devices, against possible risks, damages or accidents caused during the operation of industrial machines and / or work tools.
- the invention relates to a series of improvements introduced in the patent application P201000872, of the same owner, called "Device for preventing occupational accidents.
- the improvements proposed in this certificate of addition allow to solve the aforementioned inconveniences, providing a device to avoid occupational accidents, without connection cables with the worker that hinder their movement and with an instantaneous response speed, being applicable both in three-phase machines, single phase, like direct current.
- the device described here can work with all skin types, both healthy and damaged skin, regardless of the existence of a wound or burn in it.
- the device object of the invention comprises: a detector circuit that measures the conductance of the worker's skin, also called the "galvanic response" of the skin, and that is connectable to a power source for its electrical supply; a relay connected to the detector circuit and the power supply, which has a pair of output cables for connection to the power terminals of a work tool; and a main cable that connects the tool work with the detector circuit; said elements being configured so that the accidental contact between the worker and the work tool, the latter being in operation, causes the detector circuit to measure the conductance of the worker's skin through the main cable, so that when overcoming a certain threshold value, the relay opens immediately, disconnecting the power circuit of the work tool through its output cables and therefore, stopping its operation instantly.
- a detector circuit that measures the conductance of the worker's skin, also called the "galvanic response" of the skin, and that is connectable to a power source for its electrical supply
- a relay connected to the detector circuit and the power supply, which has a pair of output cables for connection to the
- the above-mentioned detector circuit by which it is possible to measure the galvanic response of the skin is constituted by basic electronic components, widely known and used in the field of electronics, also preferably comprising a voltage regulator to adapt and reduce the voltage from the power supply, since the electronic components require a lower electrical supply than the relay; and a pair of LED devices to indicate the on / off status of the device, and the opening / closing status of the relay respectively.
- the device of the present invention may additionally comprise at least one potentiometer, linked to the detector circuit, which allows the calibration of a certain threshold value of skin conductance.
- the potentiometer it is possible to first calibrate the device, so that we make sure that when a certain skin conductance value is reached, the relay opens, cutting off the current flow to the work tool, and therefore, immediately stopping its operation.
- the final cutting, milling or machining element of the work tool must be electrically isolated from the rest of its components (housing, motor, etc.). This can be achieved, for example, by incorporating a layer of Teflon or ceramic.
- Figure 1. Shows a schematic view of the preventive device for occupational accidents object of the invention.
- Figure 2. Shows a schematic view of the connection of the device of the invention with a work tool.
- a device (1) can be seen to prevent occupational accidents, according to the present invention, which comprises:
- a detector circuit (10) configured to measure the galvanic response of a worker's skin, said detector circuit (10) being connectable through an outlet (12) to a source of supply (3) which in the present example is 12 V, for its electrical supply,
- a relay (20) connected to the detector circuit (10) and the power supply (3), which has a pair of output cables (21, 22) for connection to the power terminals of a work tool (2 ), in this case a cutting tool like the one shown in figure 2,
- the elements mentioned above are configured so that when the worker contacts the work tool (2), the latter being connected to the network, the detector circuit (10) measures through the main cable (30) the conductance of the skin of the worker, so that when exceeding a certain threshold value of conductance, previously calibrated for each worker, the relay (20) immediately goes to an open position, disconnecting the power circuit of the work tool (2) accordingly through its output cables (21, 22) and therefore, stopping instantly, thus avoiding possible damage to the worker, such as injuries, cuts, amputations or the like.
- the detector circuit (10) comprises, among other basic electronic components, a voltage regulator (11), in the present example a positive voltage regulator L7805, which allows the voltage of the power supply (3) to be adjusted and controlled. to supply the electronic components, since, while the relay (20) needs for its If an input voltage of 12V operates, the electronic components must never receive a voltage greater than 5V, as they would be destroyed.
- a voltage regulator 11
- L7805 positive voltage regulator
- the detector circuit (10) comprises a pair of LED devices (L1, L2), in the present green and red embodiment, which allow indicating the on / off state of the device (1), as well as the opening / relay closure (20) respectively.
- the green LED (L1) on indicates that the device is connected to the power supply (3) and therefore can be used as a safety device.
- the red LED (L2) on would indicate that the relay (20) is in the open position, that is, the worker has accidentally contacted the work tool (2), so the power supply is cut off instantly.
- the work tool (2) has a motor (M) that has an electric brake (E), thus optimizing even more if the instantaneous stop of the work tool (2) fits. Therefore, if there is an accidental contact of the worker with the work tool (2), the detector circuit (10) changes the relay position (20) to its opening state, cutting off the passage of electric current to the work tool (10), which causes the activation of said electric brake (E), and therefore the work tool stop (2).
- Said electric brake (E) must have the ability to perform an instantaneous stop, of the order of hundredths of a second, so that the work tool (2) stops very quickly for optimum worker safety.
Abstract
The invention relates to a safety device based on measuring the conductance or the galvanic response of the skin, said device comprising: a detection circuit (10) which measures conductance or galvanic response; a relay (20) connected to the detection circuit (10) and provided with a pair of output cables (21, 22) to be connected to the power supply terminals of the work tool (2); and a main cable (30) which connects the work tool (2) to the detection circuit (10). The aforementioned elements are configured such that if the worker comes into contact accidentally with the work tool (2) the detection circuit (10) measures the conductance of the worker's skin and, if a pre-determined threshold value is exceeded, the relay (20) switches immediately to the open position, disconnecting the power supply circuit from the work tool (2) and, consequently, stopping the operation of the tool instantaneously.
Description
DESCRIPCION DESCRIPTION
DISPOSITIVO PARA EVITAR ACCIDENTES LABORALES DEVICE TO AVOID LABOR ACCIDENTS
OBJETO DE LA INVENCIÓN OBJECT OF THE INVENTION
La presente invención pertenece al campo de los dispositivos de seguridad y protección laborales, frente a posibles riesgos, daños o accidentes ocasionados durante el funcionamiento de máquinas industriales y/o herramientas de trabajo. The present invention belongs to the field of occupational safety and protection devices, against possible risks, damages or accidents caused during the operation of industrial machines and / or work tools.
Más concretamente, la invención se refiere a una serie de mejoras introducidas en la solicitud de patente P201000872, del mismo titular, denominada "Dispositivo para evitar accidentes laborales. More specifically, the invention relates to a series of improvements introduced in the patent application P201000872, of the same owner, called "Device for preventing occupational accidents.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
En la actualidad, es destacable que aproximadamente un 80% de los accidentes ocurridos en entornos laborales son provocados de manera inconsciente por el propio trabajador, donde a menudo sus pensamientos y problemas diarios ocupan su mente, empujándole a sufrir accidentes por distracción, pérdidas de atención, cansancio, etc., desconociendo la existencia de dispositivos de seguridad configurados para evitar dichos accidentes laborales. Así, hoy en día continua existiendo una falta de seguridad importante en el entorno laboral, pudiendo producir lesiones de todo tipo, leves, moderadas o muy graves, tales como la amputación de un miembro o incluso llegando causar la muerte del trabajador. At present, it is remarkable that approximately 80% of accidents that occur in work environments are caused unconsciously by the worker himself, where his daily thoughts and problems often occupy his mind, pushing him to suffer accidents due to distraction, loss of attention , fatigue, etc., ignoring the existence of safety devices configured to avoid such occupational accidents. Thus, today there is still a significant lack of security in the workplace, which can cause injuries of all kinds, minor, moderate or very serious, such as the amputation of a member or even causing the death of the worker.
Más en particular, en relación al dispositivo descrito en la solicitud de patente principal P201000872, se han detectado algunos inconvenientes y aspectos claramente optimizables, como son:
- su modo de funcionamiento requiere de un cable conectado al trabajador permanentemente, con las molestias y peligros que esto conlleva, tanto por la reducción de comodidad y limitación de su capacidad de movimiento, como por los posibles enganches y/o tropiezos que se pueden originar, More particularly, in relation to the device described in the main patent application P201000872, some inconveniences and clearly optimizable aspects have been detected, such as: - its mode of operation requires a cable connected to the worker permanently, with the inconvenience and dangers that this entails, both for the reduction of comfort and limitation of its ability to move, as for the possible hooks and / or trips that may originate ,
- presenta una baja velocidad de respuesta, desde que el trabajador contacta por accidente con la herramienta de trabajo, hasta que ésta se para, pudiendo llegar incluso a transcurrir varios segundos, - it has a low response speed, from when the worker accidentally contacts the work tool, until it stops, and it may even take several seconds,
- presenta un elevado peso, con unas dimensiones grandes y un diseño rudo, que hacen al dispositivo más costoso de fabricar, siendo poco manejable y menos atractivo para el usuario. - It has a high weight, with large dimensions and a rough design, which make the device more expensive to manufacture, being unmanageable and less attractive to the user.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
Las mejoras propuestas en este certificado de adición permiten resolver los inconvenientes anteriormente citados, proporcionando un dispositivo para evitar accidentes laborales, sin cables de conexión con el trabajador que entorpezcan su movimiento y con una velocidad de respuesta instantánea, siendo de aplicación tanto en máquinas trifásicas, monofásicas, como de corriente continua. Además, cabe señalar que el dispositivo aquí descrito puede trabajar con todo tipo de pieles, tanto pieles sanas como pieles dañadas, sin importar la existencia de alguna herida o quemadura en ella. The improvements proposed in this certificate of addition allow to solve the aforementioned inconveniences, providing a device to avoid occupational accidents, without connection cables with the worker that hinder their movement and with an instantaneous response speed, being applicable both in three-phase machines, single phase, like direct current. In addition, it should be noted that the device described here can work with all skin types, both healthy and damaged skin, regardless of the existence of a wound or burn in it.
Más en particular, el dispositivo objeto de invención comprende: un circuito detector que mide la conductancia de la piel del trabajador, también denominada "respuesta galvánica" de la piel, y que es conectable a una fuente de alimentación para su suministro eléctrico; un relé conectado al circuito detector y a la fuente de alimentación, que dispone de un par de cables de salida para su conexión a los terminales de alimentación de una herramienta trabajo; y un cable principal que conecta la herramienta de
trabajo con el circuito detector; estando dichos elementos configurados de modo que el contacto accidental entre el trabajador y la herramienta de trabajo, estando ésta última en funcionamiento, provoca que el circuito detector mida a través del cable principal la conductancia de la piel del trabajador, de manera que al superar un determinado valor umbral, el relé se abre de forma inmediata, desconectando a través de sus cables de salida el circuito de alimentación de la herramienta de trabajo y por tanto, parando al instante su funcionamiento. More particularly, the device object of the invention comprises: a detector circuit that measures the conductance of the worker's skin, also called the "galvanic response" of the skin, and that is connectable to a power source for its electrical supply; a relay connected to the detector circuit and the power supply, which has a pair of output cables for connection to the power terminals of a work tool; and a main cable that connects the tool work with the detector circuit; said elements being configured so that the accidental contact between the worker and the work tool, the latter being in operation, causes the detector circuit to measure the conductance of the worker's skin through the main cable, so that when overcoming a certain threshold value, the relay opens immediately, disconnecting the power circuit of the work tool through its output cables and therefore, stopping its operation instantly.
Cabe indicar que el circuito detector arriba citado, mediante el cual es posible medir la respuesta galvánica de la piel está constituido por componentes electrónicos básicos, ampliamente conocidos y usados en el campo de la electrónica, comprendiendo además preferentemente un regulador de tensión para adecuar y reducir el voltaje procedente de la fuente de alimentación, ya que los componentes electrónicos requieren un menor suministro eléctrico que el relé; y un par de dispositivos LED para indicar el estado de conexión/desconexión del dispositivo, y el estado de apertura/cierre del relé respectivamente. It should be noted that the above-mentioned detector circuit, by which it is possible to measure the galvanic response of the skin is constituted by basic electronic components, widely known and used in the field of electronics, also preferably comprising a voltage regulator to adapt and reduce the voltage from the power supply, since the electronic components require a lower electrical supply than the relay; and a pair of LED devices to indicate the on / off status of the device, and the opening / closing status of the relay respectively.
Por otro lado, se ha previsto que el dispositivo de la presente invención pueda comprender adicionalmente al menos un potenciómetro, vinculado al circuito detector, que permite la calibración de un determinado valor umbral de conductancia de la piel. Esto permite adecuar el funcionamiento del dispositivo en función de cada trabajador o entorno de trabajo, pues generalmente cada trabajador presenta unos valores de conductancia de la piel diferentes. De esta manera, mediante el potenciómetro es posible calibrar primeramente el dispositivo, de manera que nos aseguramos de que cuando se alcance un determinado valor de conductancia de la piel, el relé se abra, cortando el paso de corriente a la herramienta de trabajo, y por tanto, parando inmediatamente su funcionamiento.
Por último, es preciso indicar que para un óptimo funcionamiento del dispositivo de la invención, el elemento final de corte, fresado o mecanizado de la herramienta de trabajo debe estar aislado eléctricamente del resto de sus componentes (carcasa, motor, etc.). Ello se puede conseguir por ejemplo mediante la incorporación de una capa de teflón o cerámica. On the other hand, it is provided that the device of the present invention may additionally comprise at least one potentiometer, linked to the detector circuit, which allows the calibration of a certain threshold value of skin conductance. This allows the operation of the device to be adapted according to each worker or work environment, since generally each worker has different skin conductance values. In this way, using the potentiometer it is possible to first calibrate the device, so that we make sure that when a certain skin conductance value is reached, the relay opens, cutting off the current flow to the work tool, and therefore, immediately stopping its operation. Finally, it should be noted that for optimal operation of the device of the invention, the final cutting, milling or machining element of the work tool must be electrically isolated from the rest of its components (housing, motor, etc.). This can be achieved, for example, by incorporating a layer of Teflon or ceramic.
DESCRIPCIÓN DE LOS DIBUJOS DESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización práctica de la misma, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: Figura 1.- Muestra una vista esquemática del dispositivo preventivo de accidentes laborales objeto de invención. To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented: Figure 1.- Shows a schematic view of the preventive device for occupational accidents object of the invention.
Figura 2.- Muestra una vista esquemática del conexionado del dispositivo de la invención con una herramienta de trabajo. Figure 2.- Shows a schematic view of the connection of the device of the invention with a work tool.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN PREFERRED EMBODIMENT OF THE INVENTION
Se describe a continuación un ejemplo de realización preferente de la invención, haciendo mención a las figuras arribas citadas, sin que ello suponga una limitación de su ámbito de protección. An example of a preferred embodiment of the invention is described below, with reference to the above-mentioned figures, without implying a limitation of its scope of protection.
En las figuras 1 y 2 se puede apreciar un dispositivo (1 ) para evitar accidentes laborales, según la presente invención, el cual comprende: In Figures 1 and 2 a device (1) can be seen to prevent occupational accidents, according to the present invention, which comprises:
- un circuito detector (10) configurado para medir la respuesta galvánica de la piel de un trabajador, siendo dicho circuito detector (10) conectable a través de una toma de corriente (12) a una fuente de
alimentación (3) que en el presente ejemplo es de 12 V, para su suministro eléctrico, - a detector circuit (10) configured to measure the galvanic response of a worker's skin, said detector circuit (10) being connectable through an outlet (12) to a source of supply (3) which in the present example is 12 V, for its electrical supply,
- un relé (20) conectado al circuito detector (10) y la fuente de alimentación (3), que dispone de un par de cables de salida (21 , 22) para su conexión a los terminales de alimentación de una herramienta trabajo (2), en este caso una herramienta de corte como la mostrada en la figura 2, - a relay (20) connected to the detector circuit (10) and the power supply (3), which has a pair of output cables (21, 22) for connection to the power terminals of a work tool (2 ), in this case a cutting tool like the one shown in figure 2,
- un cable principal (30) que conecta la herramienta de trabajo (2) con el circuito detector (10), y - a main cable (30) that connects the work tool (2) with the detector circuit (10), and
- un par de potenciómetros (P1 , P2) vinculados al circuito detector (10) para la calibración de un determinado valor umbral de conductancia de la piel, en función de cada trabajador. - a pair of potentiometers (P1, P2) linked to the detector circuit (10) for the calibration of a certain threshold value of skin conductance, depending on each worker.
Así, los elementos arriba citados están configurados de manera que cuando el trabajador contacta con la herramienta de trabajo (2), estando ésta última conectada a la red, el circuito detector (10) mide a través del cable principal (30) la conductancia de la piel del trabajador, de modo que al superar un determinado valor umbral de conductancia, previamente calibrado para cada trabajador, el relé (20) pasa inmediatamente a una posición abierta, desconectando en consecuencia el circuito de alimentación de la herramienta de trabajo (2) a través de sus cables de salida (21 , 22) y por tanto, parándose ésta al instante, evitando así posibles daños al trabajador, tales como heridas, cortes, amputaciones o similares. Thus, the elements mentioned above are configured so that when the worker contacts the work tool (2), the latter being connected to the network, the detector circuit (10) measures through the main cable (30) the conductance of the skin of the worker, so that when exceeding a certain threshold value of conductance, previously calibrated for each worker, the relay (20) immediately goes to an open position, disconnecting the power circuit of the work tool (2) accordingly through its output cables (21, 22) and therefore, stopping instantly, thus avoiding possible damage to the worker, such as injuries, cuts, amputations or the like.
Más concretamente, el circuito detector (10) comprende entre otros componentes electrónicos básicos, un regulador de tensión (11 ), en el presente ejemplo un regulador de voltaje positivo L7805, que permite adecuar y controlar el voltaje de la fuente de alimentación (3) a suministrar a los componentes electrónicos, ya que, mientras el relé (20) necesita para su
funcionamiento una tensión de entrada de 12V, los componentes electrónicos no deben recibir nunca un voltaje superior a 5V, pues se destruirían. More specifically, the detector circuit (10) comprises, among other basic electronic components, a voltage regulator (11), in the present example a positive voltage regulator L7805, which allows the voltage of the power supply (3) to be adjusted and controlled. to supply the electronic components, since, while the relay (20) needs for its If an input voltage of 12V operates, the electronic components must never receive a voltage greater than 5V, as they would be destroyed.
Además, el circuito detector (10) comprende un par de dispositivos LED (L1 , L2), en la presente realización verde y rojo, que permiten indicar el estado de conexión/desconexión del dispositivo (1 ), así como el estado de apertura/cierre del relé (20) respectivamente. Así, el LED (L1 ) verde encendido nos indica que el dispositivo está conectado a la fuente de alimentación (3) y por tanto, puede empezar a usarse como dispositivo de seguridad. Por su parte, el LED (L2) rojo encendido nos indicaría que el relé (20) está en posición abierta, esto es, el trabajador ha contactado accidentalmente con la herramienta de trabajo (2), por lo que se corta la corriente de alimentación instantáneamente. In addition, the detector circuit (10) comprises a pair of LED devices (L1, L2), in the present green and red embodiment, which allow indicating the on / off state of the device (1), as well as the opening / relay closure (20) respectively. Thus, the green LED (L1) on indicates that the device is connected to the power supply (3) and therefore can be used as a safety device. For its part, the red LED (L2) on would indicate that the relay (20) is in the open position, that is, the worker has accidentally contacted the work tool (2), so the power supply is cut off instantly.
En el presente ejemplo, la herramienta de trabajo (2) presenta un motor (M) que dispone de electrofreno (E), optimizándose así aún más si cabe la parada instantánea de la herramienta de trabajo (2). Por tanto, en caso de que exista un contacto accidental del trabajador con la herramienta de trabajo (2), el circuito detector (10) cambia de posición el relé (20) a su estado de apertura, cortando el paso de corriente eléctrica a la herramienta de trabajo (10), lo que provoca la activación de dicho electrofreno (E), y por ende, el paro de la herramienta de trabajo (2). Dicho electrofreno (E) debe poseer la capacidad de realizar una parada instantánea, del orden de centésimas de segundo, de modo que la herramienta de trabajo (2) se detenga muy rápidamente para una óptima seguridad del trabajador. In the present example, the work tool (2) has a motor (M) that has an electric brake (E), thus optimizing even more if the instantaneous stop of the work tool (2) fits. Therefore, if there is an accidental contact of the worker with the work tool (2), the detector circuit (10) changes the relay position (20) to its opening state, cutting off the passage of electric current to the work tool (10), which causes the activation of said electric brake (E), and therefore the work tool stop (2). Said electric brake (E) must have the ability to perform an instantaneous stop, of the order of hundredths of a second, so that the work tool (2) stops very quickly for optimum worker safety.
Como ya se ha indicado en párrafos anteriores, para un adecuado funcionamiento del dispositivo (1 ) de seguridad aquí descrito, es preciso que la herramienta de trabajo (2), en su conexión entre el elemento final de
trabajo (disco de corte, taladro fresador, etc.) y el eje o mecanismo de accionamiento del motor (M) esté aislada del resto de componentes mediante un material o capa de material aislante (A), tal como plástico, teflón o cerámica. Además, en la vista esquemática representada en la figura 2 se puede apreciar que, dado que se trata de una herramienta de trabajo (2) de corte, rotativa, se recomienda emplear una escobilla (4) para su conexión al cable principal (30) que conecta a su vez con el circuito detector (10).
As already indicated in previous paragraphs, for a proper operation of the safety device (1) described here, it is necessary that the work tool (2), in its connection between the final element of work (cutting disc, milling drill, etc.) and the motor drive shaft or mechanism (M) is isolated from the rest of the components by means of a material or layer of insulating material (A), such as plastic, Teflon or ceramic. In addition, in the schematic view represented in Figure 2 it can be seen that, since it is a rotary cutting work tool (2), it is recommended to use a brush (4) for connection to the main cable (30) which in turn connects with the detector circuit (10).
Claims
1. - Mejoras introducidas en la solicitud de patente P201000872 "Dispositivo para evitar accidentes laborales" para trabajadores con máquinas y/o herramientas de trabajo, estando dicho dispositivo (1 ) caracterizado por comprender: 1. - Improvements introduced in patent application P201000872 "Device to prevent occupational accidents" for workers with machines and / or work tools, said device (1) being characterized by comprising:
- un circuito detector (10) que mide la conductancia de la piel, o respuesta galvánica de la piel del trabajador, y que es conectable a una fuente de alimentación (3) para su suministro eléctrico, - a detector circuit (10) that measures the conductance of the skin, or galvanic response of the worker's skin, and that is connectable to a power source (3) for its electrical supply,
- un relé (20) conectado al circuito detector (10) y a la fuente de alimentación (3), que dispone de un par de cables de salida (21 , 22) para su conexión a los terminales de alimentación de una herramienta trabajo (2), y - a relay (20) connected to the detector circuit (10) and the power supply (3), which has a pair of output cables (21, 22) for connection to the power terminals of a work tool (2 ), Y
- un cable principal (30) que conecta la herramienta de trabajo (2) con el circuito detector (10), estando dichos elementos configurados de modo que el contacto accidental entre el trabajador y la herramienta de trabajo (2), estando ésta última en funcionamiento, provoca que el circuito detector (10) mida a través del cable principal (30) la conductancia de la piel del trabajador, de modo que al superar un determinado valor umbral de conductancia, el relé (20) se abre inmediatamente, desconectando a través de sus cables de salida (21 , 22) el circuito de alimentación de la herramienta de trabajo (2) y por tanto, parando al instante su funcionamiento. - a main cable (30) that connects the work tool (2) with the detector circuit (10), said elements being configured so that the accidental contact between the worker and the work tool (2), the latter being in operation, causes the detector circuit (10) to measure the conductance of the worker's skin through the main cable (30), so that when a certain conductance threshold value is exceeded, the relay (20) opens immediately, disconnecting through its output cables (21, 22) the power circuit of the work tool (2) and therefore, stopping its operation instantly.
2. - Mejoras introducidas en la solicitud de patente P201000872 "Dispositivo para evitar accidentes laborales", según la reivindicación 1 , caracterizado por que el circuito detector (10) comprende adicionalmente un regulador de tensión (1 1 ) para adecuar el voltaje procedente de la fuente de alimentación (3).
2. - Improvements introduced in patent application P201000872 "Device for preventing occupational accidents", according to claim 1, characterized in that the detector circuit (10) additionally comprises a voltage regulator (1 1) to adapt the voltage from the power supply (3).
3. - Mejoras introducidas en la solicitud de patente P201000872 "Dispositivo para evitar accidentes laborales", según una cualquiera de las reivindicaciones 1 ó 2, caracterizado por que el circuito detector (10) comprende adicionalmente un par de dispositivos LED (L1 , L2) para indicar el estado de conexión/desconexión del dispositivo (1 ), y el estado de apertura/cierre del relé (20) respectivamente. 3. - Improvements introduced in patent application P201000872 "Device for preventing occupational accidents", according to any one of claims 1 or 2, characterized in that the detector circuit (10) additionally comprises a pair of LED devices (L1, L2) to indicate the on / off state of the device (1), and the opening / closing state of the relay (20) respectively.
4. - Mejoras introducidas en la solicitud de patente P201000872 "Dispositivo para evitar accidentes laborales", según una cualquiera de las reivindicaciones anteriores, caracterizado por que comprende adicionalmente al menos un potenciómetro (P1 , P2) vinculado al circuito detector (10) para la calibración de un determinado valor umbral de conductancia de la piel. 4. - Improvements introduced in patent application P201000872 "Device for preventing occupational accidents", according to any one of the preceding claims, characterized in that it additionally comprises at least one potentiometer (P1, P2) linked to the detector circuit (10) for Calibration of a certain threshold value of skin conductance.
5. - Mejoras introducidas en la solicitud de patente P201000872 "Dispositivo para evitar accidentes laborales", según la reivindicación 2, caracterizado por que el regulador de tensión (11 ) es un regulador de voltaje positivo L7805. 5. - Improvements introduced in patent application P201000872 "Device for preventing occupational accidents", according to claim 2, characterized in that the voltage regulator (11) is a positive voltage regulator L7805.
6. - Mejoras introducidas en la solicitud de patente P201000872 "Dispositivo para evitar accidentes laborales", según la reivindicación 1 , caracterizado por que la fuente de alimentación (3) es de 12V.
6. - Improvements introduced in patent application P201000872 "Device for preventing occupational accidents", according to claim 1, characterized in that the power supply (3) is 12V.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201331259A ES2532031B1 (en) | 2013-08-20 | 2013-08-20 | Device to prevent accidents at work, improved |
| ESP201331259 | 2013-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015025069A1 true WO2015025069A1 (en) | 2015-02-26 |
Family
ID=52483108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2014/070653 WO2015025069A1 (en) | 2013-08-20 | 2014-08-12 | Device for preventing work accidents |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2532031B1 (en) |
| WO (1) | WO2015025069A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2909461A1 (en) * | 2020-11-05 | 2022-05-06 | Sanchez Jose Maria Martinez | Protection device (Machine-translation by Google Translate, not legally binding) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978084A (en) * | 1958-10-21 | 1961-04-04 | Safeguard Mfg Company | Safety interlock |
| US3784842A (en) * | 1972-02-03 | 1974-01-08 | F Kremer | Body current activated circuit breaker |
| US3787732A (en) * | 1972-12-18 | 1974-01-22 | Magic Dot Inc | Electronic switch apparatus sensitive to and actuated by touch |
-
2013
- 2013-08-20 ES ES201331259A patent/ES2532031B1/en active Active
-
2014
- 2014-08-12 WO PCT/ES2014/070653 patent/WO2015025069A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978084A (en) * | 1958-10-21 | 1961-04-04 | Safeguard Mfg Company | Safety interlock |
| US3784842A (en) * | 1972-02-03 | 1974-01-08 | F Kremer | Body current activated circuit breaker |
| US3787732A (en) * | 1972-12-18 | 1974-01-22 | Magic Dot Inc | Electronic switch apparatus sensitive to and actuated by touch |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2532031B1 (en) | 2016-02-19 |
| ES2532031A1 (en) | 2015-03-23 |
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