WO2024254671A1 - Systèmes de barrière infrarouge et procédés de ceux-ci - Google Patents

Systèmes de barrière infrarouge et procédés de ceux-ci Download PDF

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Publication number
WO2024254671A1
WO2024254671A1 PCT/CA2023/050808 CA2023050808W WO2024254671A1 WO 2024254671 A1 WO2024254671 A1 WO 2024254671A1 CA 2023050808 W CA2023050808 W CA 2023050808W WO 2024254671 A1 WO2024254671 A1 WO 2024254671A1
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WIPO (PCT)
Prior art keywords
safety
equipment
signal
modified
master controller
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PCT/CA2023/050808
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English (en)
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Edward D. Velanoff
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Individual
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Individual
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Priority to PCT/CA2023/050808 priority Critical patent/WO2024254671A1/fr
Publication of WO2024254671A1 publication Critical patent/WO2024254671A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • F16P3/144—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 light grids
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/22—Status alarms responsive to presence or absence of persons

Definitions

  • the present invention relates generally to systems and methods for safeguarding an area, and more particularly, to an infrared barrier system and method that safeguards humans from an area in proximity of an equipment.
  • laser type systems are not practical to use in these situations, and in some cases cannot be used, because laser systems are largely affected by dust, flying debris, and water spray or anything that disrupts the lasers beam. These system imperfections cause unnecessary equipment stoppage, irritated operators, and slow down production. There are also many types of drills and drilling operations where a laser type system does not work.
  • the present disclosure relates to a portable infrared barrier device positionable in proximity of an equipment.
  • the portable infrared barrier device includes an enclosure.
  • the enclosure includes one or more sensor pods, each of the one or more sensor pods including one or more passive infrared sensors, and a corresponding pod controller associated with the sensor pod, and a master controller communicatively coupled to the one or more sensor pods and the equipment.
  • the pod controller is configured to generate one or more first safety signals for the master controller.
  • the master controller is configured to monitor the one or more first safety signals received from the pod controllers associated with the one or more sensor pods, and generate and send a second safety signal to the equipment.
  • Each passive infrared sensor is operable to detect a source of infrared radiation in a corresponding detection zone, and generate a detection signal indicative of the detection of the source of infrared radiation.
  • the pod controller associated with the sensor pod is configured to infer human presence in proximity of the equipment based on the detection signals generated by the one or more passive infrared sensors, and modify the one or more first safety signals based on the inference of the human presence in proximity of the equipment.
  • the master controller is configured to detect the modified one or more first safety signals, and modify the second safety signal for the equipment based on the modified one or more first safety signals, the modified second safety signal to cause the equipment to shut down.
  • the master controller may be configured to determine a fault state associated with the portable infrared barrier device based on continuously monitoring the modified one or more first safety signals from the corresponding pod controller of each of the one or more sensor pods and generate the modified second safety signal based on the fault state associated with the portable infrared barrier device existing for more than a pre-determined time period.
  • the master controller may be communicatively coupled to a relay of the equipment.
  • the modified second safety signal generated by the master controller may trip the relay to cause the equipment to shut down.
  • the enclosure may include a carbon fibre nylon enclosure.
  • the enclosure may be trapezoidal in shape with the one or more sensor pods placed at center, front, and on each side perpendicular to the front of the enclosure.
  • the enclosure may be guarded by a metal covering, where the metal covering may include aluminium.
  • the portable infrared barrier device may be configured to be coupled to one or more other infrared barrier devices.
  • the one or more other infrared barrier devices may include a stationary infrared barrier device, or another portable infrared barrier device.
  • each of the one or more passive infrared sensors of the sensor pod may have a detection zone that may overlap with a detection zone of at least one other passive infrared sensor of the sensor pod.
  • the detection signal may include a 3.3 -volt detection signal indicative of the detection of the source of infrared radiation
  • each of the one or more first safety signals and the second safety signal may include a 24 volt output switching signal device (OSSD) signal
  • each of the modified one or more first safety signals and the modified second safety signal may be a 0 volt signal
  • the portable infrared barrier device may include a tripod stand, where the enclosure may be mounted on the tripod stand.
  • the present disclosure relates to a stationary infrared barrier system for an equipment.
  • the stationary infrared barrier system includes one or more sensor pods mounted on the equipment, each of the one or more sensor pods including one or more passive infrared sensors, and a corresponding pod controller associated with the sensor pod, and a master controller communicatively coupled to the one or more sensor pods and the equipment.
  • the pod controller is configured to generate one or more first safety signals for the master controller.
  • the master controller is configured to monitor the one or more first safety signals received from the pod controllers associated with the one or more sensor pods, and generate and send a second safety signal to the equipment.
  • Each passive infrared sensor is operable to detect a source of infrared radiation in a corresponding detection zone, and generate a detection signal indicative of the detection of the source of infrared radiation.
  • the pod controller associated with the sensor pod is configured to infer human presence in proximity of the equipment based on the detection signals generated by the one or more passive infrared sensors, and modify the one or more first safety signals based on the inference of the human presence in proximity of the equipment.
  • the master controller is configured to detect the modified one or more first safety signals, and modify the second safety signal for the equipment based on the modified one or more first safety signals, the modified second safety signal to cause the equipment to shut down.
  • the master controller may be configured to determine a fault state associated with the stationary infrared barrier system based on continuously monitoring the modified one or more first safety signals from the corresponding pod controller of each of the one or more sensor pods, and generate the modified second safety signal based on the fault state associated with the stationary infrared barrier system existing for more than a pre-determined time period.
  • the master controller may be communicatively coupled to a relay of the equipment, where the modified second safety signal generated by the master controller may trip the relay to cause the equipment to shut down.
  • the stationary infrared barrier system may be configured to be coupled to one or more other infrared barrier devices or systems.
  • the one or more other infrared barrier devices or systems may include a portable infrared barrier device, or another stationary infrared barrier system.
  • each of the one or more passive infrared sensors of the sensor pod may have a detection zone that may overlap with a detection zone of at least one other passive infrared sensor of the sensor pod.
  • the detection signal may include a 3.3 volt detection signal indicative of the detection of the source of infrared radiation
  • each of the one or more first safety signals and the second safety signal may include a 24 volt OSSD signal
  • each of the modified one or more first safety signals and the modified second safety signal may be a 0 volt signal.
  • the present disclosure relates to an infrared barrier method including receiving, by a master controller associated with an infrared barrier device, one or more first safety signals from one or more sensor pods of the infrared barrier device, each of the one or more sensor pods including one or more passive infrared sensors, and a corresponding pod controller associated with the sensor pod, and each of the one or more sensor pods in communication with the master controller, continuously monitoring, by the master controller, the received one or more first safety signals, generating and sending, by the master controller, a second safety signal to an equipment, detecting, by the master controller, modified one or more first safety signals from at least one of the one or more sensor pods of the infrared barrier device, the modified one or more first safety signals indicative of human presence in proximity of the equipment, and modifying, by the master controller, the second safety signal for the equipment based on the modified one or more first safety signals, the modified second safety signal to cause the equipment to shut down.
  • each of the one or more first safety signals and the second safety signal may include a 24 volt OSSD signal, and each of the modified one or more first safety signals and the modified second safety signal may be a 0 volt signal.
  • the present disclosure relates to a non-transitory computer-readable storage medium comprising instructions executable by a processor, the instructions to cause the processor to carry out the functions performed by the disclosed invisible barrier device.
  • FIG. 1 shows an example representation for implementing an invisible barrier system, in accordance with embodiments of the present disclosure
  • FIG. 2 shows an example representation of portable invisible barrier systems in proximity of an equipment, in accordance with embodiments of the present disclosure
  • FIG. 3 shows an example representation of a stationary invisible barrier system, in accordance with embodiments of the present disclosure
  • FIG. 4 shows an example representation of detection zones of corresponding passive infrared sensors of invisible barrier systems, in accordance with embodiments of the present disclosure
  • FIG. 5 A shows an example functional overview of sensor pods of an invisible barrier system, in accordance with embodiments of the present disclosure
  • FIG. 5B shows an example table showing states of passive infrared sensors and expected outputs, in accordance with embodiments of the present disclosure
  • FIG. 6 A shows an example functional overview of a master controller of an invisible barrier system, in accordance with embodiments of the present disclosure
  • FIG. 6B shows an example table showing states of sensor inputs and expected outputs, in accordance with embodiments of the present disclosure
  • FIGs. 7A and 7B show example representations of interconnected invisible barrier systems, in accordance with embodiments of the present disclosure.
  • FIG. 8 shows a flow chart of an example infrared barrier method, in accordance with embodiments of the present disclosure.
  • individual embodiments may be described as a process which is depicted as a flowchart, a flow diagram, a data flow diagram, a structure diagram, or a block diagram. Although a flowchart may describe the operations as a sequential process, many of the operations can be performed in parallel or concurrently. In addition, the order of the operations may be re-arranged.
  • a process is terminated when its operations are completed but could have additional blocks not included in a figure.
  • a process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc. When a process corresponds to a function, its termination can correspond to a return of the function to the calling function or the main function.
  • exemplary and/or “demonstrative” is used herein to mean serving as an example, instance, or illustration. For the avoidance of doubt, the subject matter disclosed herein is not limited by such examples.
  • any aspect or design described herein as “exemplary” and/or “demonstrative” is not necessarily to be construed as preferred or advantageous over other aspects or designs, nor is it meant to preclude equivalent exemplary structures and techniques known to those of ordinary skill in the art.
  • FIG. 1 shows an example representation 100 for implementing an invisible barrier system, in accordance with embodiments of the present disclosure.
  • the example representation 100 includes an invisible/infrared barrier system 102 comprising one or more sensor pods (104-1, 104-2) and a master controller 110.
  • the one or more sensor pods (104-1, 104-2) may include one or more passive infrared (PIR) sensors (106-1, 106-2, 106-3, 106- 4).
  • PIR passive infrared
  • a first sensor pod 104-1 may include one or more PIR sensors (106-1, 106-2)
  • a second sensor pod 104-2 may include one or more PIR sensors (106-3, 106-4).
  • the one or more PIR sensors may be individually referred as PIR sensor 106 and collectively referred as the PIR sensors 106.
  • the one or more sensor pods may be referred as the sensor pods 104 or the sensor pods 104.
  • two sensor pods have been depicted in the invisible barrier system 102 in FIG. 1, there may be any number of sensor pods as appropriate within the scope of the present disclosure.
  • the PIR sensors 106 may be analog sensors or digital sensors.
  • the PIR sensors 106 may detect humans, and in some embodiments, the PIR sensors 106 may detect direction of travel of the humans.
  • each sensor pod (104-1, 104-2) may include a corresponding pod controller (108-1, 108-2).
  • the pod controllers (108-1, 108- 2) may be communicatively coupled to the master controller 110.
  • the master controller 110 may be communicatively coupled to the sensor pods (104-1, 104-2) and an equipment 112.
  • the equipment 112 may include a rotating steel in an underground drill or mining domain.
  • the equipment 112 may be any mining equipment.
  • the equipment 112 may comprise any equipment from which the humans need to be safeguarded.
  • the invisible barrier system 102 may detect a presence of humans, living objects, or vehicles in proximity of the equipment 112. In some embodiments, the invisible barrier system 102 may cause the equipment 112 to shut down upon detection of the presence of, for example, human within a detection zone of the invisible barrier system 102 (e.g., PIR sensors 106), i.e., in proximity to the equipment 112. In some embodiments, the invisible barrier system 102 may detect direction of travel of the humans, in addition to detecting the presence of humans, based on the combination of sensors and software. Since there are multiple PIR sensors 106, the detection of travel may be possible.
  • a detection zone of the invisible barrier system 102 e.g., PIR sensors 106
  • the invisible barrier system 102 may determine that the human is unsafe, and accordingly, the invisible barrier system 102 may not allow reset.
  • the invisible barrier system 108 may be capable of data logging.
  • data logging may include, but not be limited to, time stamp/date stamp for each event incident, for example, fault state detected at X time X date, human detected at X time X date, human/operators detected entering zone at X time X date, human detected leaving zone at X time X date, system reset/bypassed at X time X date by operator. All these events or incidents may be logged in detail so that they may be referred to in case they are required.
  • the PIR sensors 106 may be configured to detect a human body heat signature, such that detection zones of each of the PIR sensors 106 may overlap with each other for redundancy in order to identify the presence of the human in proximity of the equipment 112. It may be noted that the invisible barrier system 102 uses the PIR sensors 106 to create an electronic barricade. The PIR sensors 106 may detect motion and self-adjust to changing operating zones around the equipment 112. In an example embodiment, the detection zones of the PIR sensors 106 may be three dimensional (3D) zones spanning 5 meters and may cover an area of 150 degrees horizontally x 35 degrees vertically around the sensor pod 104.
  • 3D three dimensional
  • the detection zones of the PIR sensors 106 may be 3D zones spanning 5 meters and may cover an area of 35 degrees horizontally x 150 degrees vertically around the sensor pod 104. It may be appreciated that these are exemplary embodiments, and other detection zones may be possible.
  • the PIR sensors 106 may detect a human even at 16 feet or more. It may be appreciated that the PIR sensors 106 or as such the invisible barrier system 102 may be customized based on requirements on any equipment (e.g., 112) or area, for example, to change angles, zoning, detection distance, or the like.
  • the sensor pods (104-1, 104-2) may be embedded in an enclosure.
  • the enclosure may include a 3D carbon fiber nylon enclosure.
  • the invisible barrier system 102 has a safety rating of performance level (PL)-d with 99% diagnostics coverage, which may result from the 3D carbon fiber nylon enclosure.
  • PL is a value used to define the ability of safety-related parts of control systems to perform a safety function under foreseeable conditions. There are five levels, ‘a’ - ‘e’ , where ‘a’ is the higher level of probability of dangerous failure and ‘e’ is the lowest level of probability of dangerous failure.
  • the invisible barrier system 102 has the safety rating of PL-d, because of their constructions (e.g., physical characteristics), operational requirements, specialized software run by the system 102, using the 3D carbon fiber nylon enclosure, etc.
  • the enclosure may be trapezoidal in shape with the sensor pods (104-1, 104-2) being placed at center, front, and on each side perpendicular to the front of the enclosure. It may be appreciated that this is an illustrative example, and other configurations or arrangements may be possible within the scope of the present disclosure.
  • the enclosure may be guarded by a metal covering.
  • the metal covering may preferably be of aluminium. However, any other appropriate metal covering may be used within the scope of the present disclosure.
  • the metal covering does not obstruct the detection zone or view of the PIR sensors 106.
  • the corresponding pod controllers (108-1, 108-2) may also be embedded with the sensor pods (104-1, 104-2) in the enclosure.
  • the master controller 110 may also be embedded within the same enclosure as the sensor pods (104-1, 104-2) and the pod controllers (108-1, 108-2), as depicted in FIG. 1.
  • the invisible barrier system 102 may include a display on the back of the unit and light emitting diodes (LEDs) indicating lights that may be mounted inside the enclosure, but may be viewed from outside.
  • LEDs light emitting diodes
  • the entire invisible barrier system 102 may be potted with epoxy to completely conceal all the internal components, to protect from vibration, moisture, impact, tampering, and reverse engineering, or the like.
  • the master controller 110 may be separate from the sensor pods (104-1, 104-2) and the pod controllers (108- 1, 108-2), and may be communicatively coupled to the pod controllers (108-1, 108-2).
  • the invisible barrier system 102 may be a stationary system with the sensor pods (104-1, 104-2) being mounted on the equipment 112, and the master controller 110 being in communication with the sensor pods (104-1, 104-2) and the equipment 112. This will be explained in detail with reference to FIG. 3.
  • the invisible barrier system 102 may be positioned in proximity to the equipment 112, as depicted in FIG. 1, i.e. the invisible barrier system 102 may not be physically attached to the equipment 112.
  • the invisible barrier system 102 may be installed in underground drill rigs.
  • the invisible barrier system 102 may be a stand-alone system that may be positionable in proximity to the equipment 112.
  • the invisible barrier system 102 may be positionable on a tripod stand such that the invisible barrier system 102 may cover a huge 3D area to detect the presence of the human in proximity of the equipment 112.
  • the portable invisible barrier system 102 may be positionable by an operator or an administrator of the equipment 112, and may be intended to safeguard a dangerous area in proximity to the equipment 112. To this effect, when a human enters a detection zone of any one or more of the PIR sensors 106, the invisible barrier system 102 may detect the presence of the human, and cause the equipment 112 to shut down in order to safeguard the human.
  • the pod controllers may be configured to evaluate inputs from the PIR sensors 106 and generate one or more first safety signals for the master controller 110.
  • the PIR sensors 106 may be used in conjunction with a MOSFET to invert a signal to a normally high signal. When the PIR sensor 106 is in a normal state (i.e., safe state), the signal may be low. When the PIR sensor 106 is triggered, the signal from the PIR sensor 106 may be high, for example, a 3.3V signal.
  • the one or more first safety signals may be pulsed safety output signals, i.e., output switching signal device (OSSD) signals.
  • OSD output switching signal device
  • the master controller 110 may be configured to monitor the one or more first safety signals from the pod controllers (108-1, 108-2). In an example embodiment, the master controller 110 may monitor signals received from up to six PIR sensors 106. The master controller 110 may continuously monitor the one or more first safety signals from the pod controllers (108-1, 108-2). In some embodiments, the master controller 110 may monitor the one or more first safety signals from the pod controllers (108-1, 108-2) at pre-determined time intervals. Further, the master controller 110 may generate a second safety signal based on the received one or more first safety signals from the pod controllers (108-1, 108-2). The master controller 110 may send the second safety signal to the equipment 112. The second safety signal may be the OSSD signal.
  • the one or more first safety signals and the second safety signal may be 24V OSSD signals. This may indicate that the equipment 112 may continue to function and that the invisible barrier system 102 is in a safe state, i.e. no human, living being, or a vehicle, has been detected in an area covered by the equipment 112.
  • the PIR sensors 106 may detect a source of infrared radiation in a corresponding detection zone of the PIR sensor 106 when a human, living being, or the vehicle enters a zone covered by the equipment 112 during an operation of the equipment 112. Based on the detected source of radiation, the PIR sensors 106 may generate a detection signal and send the detection signal to the corresponding pod controller (108-1, 108-2).
  • the detection signal may be a 3.3V signal indicative of the PIR sensors 106 being triggered.
  • the corresponding pod controller (108-1, 108-2) may infer the presence of the human in proximity of the equipment 112 based on the detection signal received from the PIR sensors 106. Accordingly, the pod controllers (108-1, 108-2) may modify the one or more first safety signals (i.e., 24V OSSD signal) for the master controller 110. For example, the pod controllers (108-1, 108-2) may trip the signal from 24V OSSD signal to a 0V signal.
  • the master controller 110 may detect the modified one or more first safety signals (i.e., 0V signal), and modify the second safety signal (i.e., 24V OSSD signal) for the equipment 112 based on the modified one or more first safety signals. For example, similar to the pod controllers (108-1, 108-2), the master controller 110 may trip the second safety signal from 24V OSSD signal to a 0V signal. The master controller 110 may send the modified second safety signal to the equipment 112. In particular, by sending the modified second safety signal (i.e., 0V signal), the master controller 110 or as such, the invisible barrier system 102 may indicate that the equipment 112 may need to shut down to safeguard the detected human in proximity of the equipment 112.
  • the modified second safety signal i.e., 0V signal
  • the modified second safety signal from the master controller 110 may cause the equipment 112 to shut down for a particular time period or until safe state may be assured, thereby protecting the human.
  • the invisible barrier system 102 may determine the safe state based on continuously monitoring the area covered by the equipment 112. For example, once the PIR sensors 106 determine that there is no human in the corresponding detection zone, the PIR sensors 106 may indicate the same to the corresponding pod controllers (108-1, 108-2). The pod controller (108-1, 108-2) may then start generating the one or more first safety signals for the master controller 110, and the master controller 110 may generate and send the second safety signal to the equipment 112. This may indicate the equipment 112 that the safe state is assured, and that the equipment 112 may resume operation. In some embodiments, an operator or an administrator may restart the equipment 112 once safe state may be assured.
  • the equipment 112 may include a relay (not shown) such that the master controller 110 may be communicatively coupled to the relay of the equipment 112.
  • the modified second safety signal generated by the master controller 110 may be sent to the relay.
  • the relay may evaluate these signals received from the master controller 110, such that the modified second safety signal may trip the relay of the equipment 112 causing the equipment 112 to shut down.
  • the relay may supply and control the supply of power to the equipment 112 such that the relay may cause the equipment 112 to start, stop, and/or resume.
  • the relay may automatically stop the supply of power to the equipment 112, thereby causing the equipment 112 to shut down.
  • the relay may be used to control any number of things such as, but not limited to, electric prime movers, fuel cut-off solenoids, hydraulic safety valves etc. currently the safety relay controls a set of “block and bleed” type safety valves which in turn may stop hydraulic oil flow to drill motors and other hydraulic controls in the equipment 112.
  • These “block and bleed” type safety valves may be double redundant, and may release all stored energy from a prime mover and provide closed loop feedback of a valve position via inductive proximity switches.
  • the master controller 110 may send the modified second safety signal, i.e., 0V signal to the equipment 112 to cause the equipment 112 to shut down.
  • the master controller 110 may detect a fault state associated with the invisible barrier system 102 based on continuously monitoring the one or more first safety signals from the pod controllers (108-1, 108-2).
  • the master controller 110 in response to detecting the fault state for more than a pre-determined time period, may generate the modified second safety signal (i.e., 0V signal) for the equipment 112 to cause the equipment 112 to shut down.
  • the below table 1 gives an overview of environmental conditions and requirements of the invisible barrier system 102.
  • Each of the pod controllers 108 and/or the master controller 110 may include a processor and a memory operatively coupled with the processor, such that the processor may enable the pod controllers 108 and/or the master controller 110 to perform the respective functions, as discussed herein.
  • the processor may be implemented as one or more microprocessors, microcomputers, microcontrollers, edge or fog microcontrollers, digital signal processors, central processing units, logic circuitries, and/or any devices that process data based on operational instructions.
  • Examples of implementations of the processor may be a Graphics Processing Unit (GPU), a Reduced Instruction Set Computing (RISC) processor, an Application- Specific Integrated Circuit (ASIC) processor, a Complex Instruction Set Computing (CISC) processor, a microcontroller, a central processing unit (CPU), and/or a combination thereof.
  • the processor may be configured to fetch and execute computer-readable instructions stored in the memory of the pod controllers 108 and/or the master controller 110.
  • the memory may be configured to store one or more computer-readable instructions or routines in a non-transitory computer readable storage medium, which may be fetched and executed to create or share data packets over a network service.
  • the memory may comprise any non-transitory storage device including, for example, volatile memory such as Random-Access Memory (RAM), or non-volatile memory such as Electrically Erasable Programmable Read-only Memory (EPROM), flash memory, and the like.
  • the processor may comprise a cloud based or virtualized processing module or functionality. The processor may cooperate with the memory to execute instructions stored in the memory. For example, the processor may execute the instructions stored in memory to perform or control performance of methods, including method (e.g., 800), and the other methods described herein.
  • FIG. 1 shows example components of the proposed disclosure, in other embodiments, fewer components, different components, differently arranged components, or additional functional components may be implemented than those depicted in FIG. 1.
  • FIG. 2 shows an example representation 200 of portable invisible barrier systems in proximity of an equipment, in accordance with embodiments of the present disclosure.
  • the example representation 200 includes an equipment 202 and a plurality of portable invisible barrier systems (204-1, 204-2, 204-3, 204-4). It may be appreciated that the plurality of invisible barrier systems (204-1-1, 204-2, 204-3, 204-4) may be referred as the plurality of invisible barrier systems 204. Further, it may be appreciated that the equipment 202 and the portable invisible barrier systems 204 may be similar to the respective equipment 112 and the invisible barrier system 102 of FIG. 1 in their functionality, and hence may not be described in detail again for the sake of brevity.
  • the invisible barrier system 204 may be positionable on a tripod stand such that the invisible barrier system 204 may cover a huge 3D area, for example, 206 to detect the presence of the human in proximity of the equipment 202.
  • These stand-alone units 204 may be used as one, or multiple units linked together to form a larger system and have detections zones (e.g., 206) that are hundreds of meters apart, if desired.
  • a portable invisible barrier system 204 may be coupled to a stationary invisible barrier system (depicted in FIG. 3).
  • the plurality of invisible barrier systems 204 may be positionable by an operator or an administrator of the equipment 202, and may be intended to safeguard a dangerous area 206 in proximity to the equipment 202.
  • the invisible barrier system 204 may detect the presence of the human, and cause the equipment 202 to shut down in order to safeguard the human.
  • the invisible barrier systems 204 may be moved quickly to different locations or positions to accommodate for different equipment setups or to avoid interference from other nearby equipment.
  • the invisible barrier system 204 may guard a break-through point of a long hole drill (i.e., 202).
  • a break-through point may be several hundreds of meters above or below a long hole drill.
  • FIG. 3 shows an example representation 300 of a stationary invisible barrier system, in accordance with embodiments of the present disclosure.
  • a stationary invisible barrier system may include a master controller 302 in communication with one or more sensor pods (304-1, 304-2) and an equipment 306.
  • the controller 302 may be mounted on the equipment 306, and connected to the one or more sensor pods (304-1, 304-2) by, for example, cable or wirelessly.
  • the master controller 302, the one or more sensor pods (304-1, 304-2), and the equipment 306 may be similar to the respective master controller 110, the one or more sensor pods (104-1, 104-2), and the equipment 112 of FIG. 1 in their functionality, and hence, may not be described in detail again for the sake of brevity.
  • the sensor pods (304-1, 304-2) may include one or more PIR sensors (e.g., 106) and corresponding pod controller (e.g., 108).
  • the pod controllers may evaluate signals from the PIR sensors to easily detect a presence of a human or a vehicle or any other living object within a detection zone of the corresponding PIR sensor. These signals may then be transformed into one or more first safety signals, i.e., 24V OSSD signals, and transmitted via wire to the master controller 302.
  • the master controller 302 may include a processor and a memory operatively coupled with the processor, such that the processor may enable the master controller 302 to make critical decisions based on information or signals received from the sensor pods (304- 1, 304-2).
  • the master controller 302 may be connected to a relay of the equipment 306, such that the master controller 302 may send second safety signals, i.e., 24V OSSD signals to the relay.
  • the relay may evaluate these second safety signals, and control the equipment 306 based on the second safety signals received from the master controller 302.
  • the system when the stationary invisible barrier system of FIG. 3 or the portable invisible barrier system of FIG. 1 has tripped due to fault or human detection, the system may be reset by an operator.
  • the master controller 302 or 110 may only provide power to a reset button for the operator to reset the system if all criteria is met. The operator may make the final decision to put the system in run mode.
  • a reset signal may pass through proximity switches in safety valves before reaching the relay. The reset may only be performed from a first unit in line (if using more than one invisible barrier system and usually located on or at the equipment 306). This ensures that the operator has a visual view of the equipment 306 before resetting the system.
  • the system may not reset if any one unit is tripped if using more than one system linked together. If using multiple systems linked together, the last system in the chain may be the only one that generates the safety signals, i.e., pulsed 24V OSSD signals. These safety signals may be passed through each system until it reaches the relay on the equipment 306 (or 112). Each individual system in the chain may monitor the safety signals, i.e., 24V safety OSSD signals that are passing through it up to the next unit in line. Each system has the ability to break the safety signals that are passing through, which may in turn trip the relay and cause the equipment 306 to shut down. In some embodiments, the systems may determine if they are connected in a system running multiple units or if there is only one unit on its own, and may also determine their position in the chain. This will be further explained with reference to FIGs. 7 A and 7B.
  • the sensor pods (304-1, 304-2) may usually be located on the sides and front of the equipment 306.
  • This machine mounted invisible barrier system may detect a human in a danger area covered by the equipment 306 which may be usually at the front of the equipment 306.
  • FIG. 3 shows example components of the proposed disclosure, in other embodiments, fewer components, different components, differently arranged components, or additional functional components may be implemented than those depicted in FIG. 3.
  • FIG. 4 shows an example representation 400 of detection zones of corresponding PIR sensors of invisible barrier systems, in accordance with embodiments of the present disclosure.
  • the example representation 400 includes an equipment 402 and one or more PIR sensors (404-1, 404-2, 404-3). It may be appreciated that the equipment 402 and the one or more PIR sensors (404-1, 404-2, 404-3) may be similar to the respective equipment 112 and the one or more PIR sensors 106 of FIG. 1 in their functionality, and hence, may not be described in detail again for the sake of brevity.
  • each of the PIR sensors (404-1, 404-2, 404-3) may have their respective detection zones (406-1, 406-2, 406-3).
  • a first PIR sensor 404-1 may have a first detection zone 406-1
  • a second PIR sensor 404-2 may have a second detection zone 406-2
  • a third PIR sensor 404-3 may have a third detection zone 406-3.
  • each of the PIR sensors (404-1, 404-2, 404-3) may be associated with sensors pods (e.g., 104), as depicted in FIG. 1.
  • a detection zone (406-1, 406-2, 406-3) may represent a 3D space in which a human movement or a vehicle movement or any other movement of a living object therein may trigger a detection event at the PIR sensors (404-1, 404-2, 404-3), such that the PIR sensors (404-1, 404-2, 404-3) may generate a detection signal, i.e., 3.3V signals for their corresponding pod controllers (e.g., 108) to indicate presence of movement of a human, as an example.
  • a detection signal i.e., 3.3V signals for their corresponding pod controllers (e.g., 108) to indicate presence of movement of a human, as an example.
  • the range or angle of the detection zones (406-1, 406-2, 406-3) may be adjusted by an operator an administrator.
  • the detection zones (406-1, 406-2, 406-3) extend out from the PIR sensors (404-1, 404-2, 404-3) at a defined angle.
  • the detection zones (406-1, 406-2, 406-3) may be configured to overlap each other at least partially, in order to increase the probability of detection of human in proximity of the equipment 402 and to increase the field of view of the detection zones (406-1, 406-2, 406-3).
  • the PIR sensors (404-1, 404-2, 404-3) may be configured to generate the detection signal when a human enters any detection zone (406-1, 406-2, 406-3).
  • the detection signal may be generated immediately based on the detection of the human within the detection zone (406-1, 406-2, 406-3).
  • the detection signal may be transmitted to the corresponding pod controllers 108, which in turn may generate modified one or more first safety signals (i.e., from 24V OSSD signals to 0V signal) for a master controller (e.g., 110).
  • the master controller 110 may then generate and send a modified second safety signal (i.e., 0V signal) to the equipment 402 to cause the equipment 402 to shut down.
  • a modified second safety signal i.e., 0V signal
  • FIG. 5A shows an example functional overview 500A of sensor pods of an invisible barrier system, in accordance with embodiments of the present disclosure.
  • an invisible barrier system may include one or more sensor pods (e.g., 104).
  • the one or more sensor pods 104 may include one or more PIR sensors (502-1, 502-2) and a corresponding pod controller 504. It may be appreciated that the one or more PIR sensors (502-1, 502-2) and the pod controller 504 may be similar to the respective one or more PIR sensors 106 and the pod controller 108 of FIG. 1 in their functionality, and hence, may not be described in detail again for the sake of brevity.
  • the pod controller 504 may be configured with a pulse generator and an AND gate.
  • a signal from the PIR sensor (502-1, 502-2) may be low when the PIR sensor (502-1, 502-2) is in its nominal state, i.e., safe state, for example, when there is no detection of any living object within its corresponding detection zone in proximity of an equipment (e.g., 112).
  • a signal from the PIR sensor (502-1, 502-2) may be high when the PIR sensor (502-1, 502-2) is triggered, i.e., when a living object is detected within the corresponding detection zone.
  • the high signal may be a detection signal generated by the PIR sensor (502-1, 502-2).
  • the detection signal may be a 3.3V signal. In some embodiments, the detection signal may be a 5V signal.
  • the pod controller 504 may generate a corresponding first safety signal for a master controller (e.g., 110). In some embodiments, the pod controller 504 may generate one or more first safety signals, i.e., 24V OSSD signals (506-1, 506-2) based on the low signals received from the PIR sensors (502-1, 502-2), i.e., when the PIR sensors (502-1, 502-2) are in the nominal or safe state.
  • the pod controller 504 may modify the one or more first safety signals, i.e., from 24V OSSD signals to 0V signal based on the detection (high) signals received from the PIR sensors (502-1, 502-2) in response to detection of a living object within the corresponding detection zone.
  • the below table 2 outlines the required parameters and characteristics of the sensor input parameters.
  • FIG. 5B shows an example table 500B showing states of PIR sensors and expected OSSD outputs, in accordance with embodiments of the present disclosure.
  • FIG. 5B the table 500B shows states of PIR sensors (502-1, 502-2) with corresponding OSSD outputs (506-1, 506-2).
  • the pod controller e.g., 504
  • the pod controller 504 may use separate redundant circuits (for example, pulse generator and AND gate) to generate each OSSD pulse (506-1, 506-2), one for each respective PIR sensor (502-1, 502-2).
  • FIG. 6A shows an example functional overview 600A of a master controller of an invisible barrier system, in accordance with embodiments of the present disclosure.
  • the invisible barrier system may include one or more sensors pods (602-1, 602-2) and a master controller 604. It may be appreciated that the one or more sensor pods (602-1, 602-2) and the master controller 604 may be similar to the respective one or more sensor pods (104-1, 104-2) and the master controller 110 of FIG. 1 in their functionality, and hence, may not be described in detail again for the sake of brevity .
  • redundant master controllers 604 may evaluate one or more first safety signals (or modified) from the sensor pods (602-1, 602-2) and generate one or more second safety signals (606-1, 606-2).
  • the master controller 604 may include more than one master controller 604.
  • the inputs from the sensor pods (602-1, 602-2) may connect to the master controllers 604 digital inputs.
  • the signal may be stepped down to the required voltage using passive components (e.g., voltage dividing resistor array).
  • the digital inputs of the master controller 604 may be protected using current-limiting resistors and diodes to prevent back- feeding.
  • the below table 3 outlines the required parameters and characteristics of the master controller input parameters.
  • FIG. 6B shows an example table 600B showing states of OSSD sensor inputs and expected OSSD outputs, in accordance with embodiments of the present disclosure.
  • each master controller 604 may monitor each pair of OSSD inputs for discrepancies. A discrepancy fault may be triggered if the discrepancy (high or low) persists for more than a predefined time period, for example, for more than 250 ms. In some embodiments, each master controller 604 may monitor each pair of OSSD inputs for shorts between channels. A short fault may be triggered if there are more than, as an example, three overlapping test pulses.
  • the output of the master controller 604 may be a dual-channel OSSD with test pulses.
  • the OSSD pulses may interface to a relay of an equipment (e.g., 112).
  • the master controller 604 may evaluate the OSSD outputs (606-1, 606-2) as a feedback to validate the signals.
  • an output fault may be triggered by the master controller 604 if the OSSD output (606-1, 606-2) does not turn on within the pre-defined time period (i.e., 250 ms) of the output being requested to turn on.
  • an output fault may be triggered of the OSSD output (606-1, 606-2) does not turn off within the pre-defined time period of the output being requested to turn off.
  • FIGs. 7A-7B show example representations (700A, 700B) of invisible barrier systems connected in a chain, in accordance with embodiments of the present disclosure.
  • a plurality of invisible barrier systems (704-1, 704-2, 704-3, 704- 4) may be coupled with each other in proximity to an equipment 702. It may be appreciated that the plurality of invisible barrier systems (704-1, 704-2, 704-3, 704-4) may be similar to the invisible barrier system 102 of FIG. 1 and/or the invisible barrier system of FIG. 3 in their functionality, i.e., the plurality of invisible barrier systems (704-1, 704-2, 704-3, 704-4) may either be portable systems or stationary systems, as discussed herein.
  • a first invisible barrier system 704-1 may be the farthest system to the equipment 702, and a fourth invisible barrier system 704-4 may be the closest system to the equipment 702.
  • the farthest system in the chain i.e., the first invisible barrier system 704-1 or the first system 704-1 may generate safety signals for the equipment 702, such that the first system 704-1 may transmit the generated safety signals, i.e. OSSD signals to a second system 704-2, which in turn may forward the safety signals generated by the first system 704-1 to a third system 704-3.
  • the third system 704-3 may forward the safety signals generated by the first system 704-1 to the fourth system 704- 4.
  • the fourth system 704-4 may forward the safety signals to the equipment 702, thereby indicating that the equipment 702 may continue to function.
  • the system may be reset by an operator.
  • a master controller 302 or 110 may only provide power to a reset button for an operator to reset the system if all criteria is met. The operator may make the final decision to put the system in run mode.
  • a reset signal may pass through proximity switches in safety valves before reaching the relay. The reset may only be performed from a first system in line, i.e. the fourth system 704-4. In some embodiments, the system may not reset if any one unit is tripped.
  • the last system in the chain i.e. the first system 704-1 may be the only one that generates the safety signals, i.e., pulsed 24V OSSD signals. These safety signals may be passed through each system until it reaches the relay on the equipment 702. Each individual system in the chain may monitor the safety signals, i.e., 24V safety OSSD signals that are passing through it up to the next unit in line.
  • the first system 704-1 may generate the safety signals for the equipment 702 and transmit to the second system 704-2.
  • the second system 704-2 may get triggered, and generate a detection signal corresponding to detecting a presence of a human within its corresponding detection zone(s).
  • the second system 704-2 may modify the safety signals generated by the first system 704-1, and send the modified safety signals, i.e. 0V signal to the third system 704-3.
  • the third system 704-3 and the fourth system 704-3 may transmit the modified safety signal, i.e. 0V signal to the equipment 702 or relay of the equipment 702. Therefore, each system has the ability to break the safety signals that are passing through, which may in turn trip the relay and cause the equipment 702 to shut down.
  • FIG. 8 shows a flow chart of an example infrared barrier method 800, in accordance with embodiments of the present disclosure.
  • the blocks of the method 800 may be performed by a master controller (e.g., 110) associated with an infrared barrier system.
  • one or more first safety signals may be received by the master controller 110 from one or more sensor pods (e.g., 104) of an infrared barrier system/device (e.g., of FIG. 1 or FIG. 3).
  • the one or more sensor pods may include one or more PIR sensors (e.g., 106) and a corresponding pod controller (e.g., 108) associated with the sensor pod.
  • the one or more sensor pods may be in communication with the master controller.
  • the one or more sensor pods and the master controller may be enclosed in a single enclosure in a portable invisible barrier system (e.g., FIG. 1).
  • the one or more sensor pods may be in communication with the master controller (e.g., FIG. 3).
  • the one or more first safety signals received from the sensor pods are continuously monitored. Further, at block 806, a second safety signal is be generated and sent to an equipment (e.g., 112). In some embodiments, the second safety signal may be sent to a relay of the equipment by the master controller 110.
  • an equipment e.g., 112
  • the second safety signal may be sent to a relay of the equipment by the master controller 110.
  • modified one or more first safety signals from at least one of the one or more sensor pods are detected.
  • the modified one or more first safety signals may be indicative of, for example, human presence in proximity of the equipment.
  • the second safety signal is modified for the equipment based on the modified one or more first safety signals.
  • the modified second safety signal may cause the equipment to shut down, thereby safeguarding the human.
  • a fault state associated with the invisible barrier device may be determined based on monitoring the one or more first safety signals from the sensor pods continuously.
  • the modified second safety signal may be generated by the master controller 110 based on the fault state associated with the invisible barrier device existing for more than a pre-determined time period, for example, 250 ms.
  • FIG. 8 It may be appreciated that the block shown in FIG. 8 are merely illustrative. Other suitable blocks may be used, if desired. Moreover, the blocks of the method 800 may be performed in any order and may include additional blocks.
  • the methods described herein may be performed using the systems described herein.
  • the methods described herein may be performed using systems different than the systems described herein.
  • the systems described herein may perform the methods described herein and may perform or execute instructions stored in a non-transitory computer-readable storage medium (CRSM).
  • CRSM may comprise any electronic, magnetic, optical, or other physical storage device that stores executable instructions.
  • the instructions may comprise instructions to cause a processor to perform or control performance of operations of the proposed methods. It is also contemplated that the systems described herein may perform functions or execute instructions other than those described in relation to the methods and CRSMs described herein.
  • the CRSMs described herein may store instructions corresponding to the methods described herein and may store instructions which may be performed or executed by the systems described herein. Furthermore, it is contemplated that the CRSMs described herein may store instructions different than those corresponding to the methods described herein and may store instructions which may be performed by systems other than the systems described herein.
  • the methods, systems, and CRSMs described herein may include the features or perform the functions described herein in association with any one or more of the other methods, systems, and CRSMs described herein.
  • the method, methods, or operations described above may be executed or carried out by a computing system including a tangible computer-readable storage medium, also described herein as a storage machine, that holds machine-readable instructions executable by a logic machine (e.g. a processor or programmable control device) to provide, implement, perform, and/or enact the above described methods, processes and/or tasks.
  • a logic machine e.g. a processor or programmable control device
  • the state of the storage machine may be changed to hold different data.
  • the storage machine may include memory devices such as various hard disk drives, CD, or DVD devices.
  • the logic machine may execute machine-readable instructions via one or more physical information and/or logic processing devices.
  • the logic machine may be configured to execute instructions to perform tasks for a computer program.
  • the logic machine may include one or more processors to execute the machine-readable instructions.
  • the computing system may include a display subsystem to display a graphical user interface (GUI) or any visual element of the methods or processes described above.
  • GUI graphical user interface
  • the display subsystem, storage machine, and logic machine may be integrated such that the above method may be executed while visual elements of the disclosed system and/or method are displayed on a display screen for user consumption.
  • the computing system may include an input subsystem that receives user input.
  • the input subsystem may be configured to connect to and receive input from devices such as a mouse, keyboard, or gaming controller.
  • a user input may indicate a request that certain task is to be executed by the computing system, such as requesting the computing system to display any of the above described information or requesting that the user input updates or modifies existing stored information for processing.
  • a communication subsystem may allow the methods described above to be executed or provided over a computer network.
  • the communication subsystem may be configured to enable the computing system to communicate with a plurality of personal computing devices.
  • the communication subsystem may include wired and/or wireless communication devices to facilitate networked communication.
  • the described methods or processes may be executed, provided, or implemented for a user or one or more computing devices via a computer-program product such as via an API.

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Abstract

La présente invention concerne des systèmes de barrière infrarouge et des procédés. Les systèmes de barrière infrarouge peuvent être des systèmes portables ou des systèmes fixes. Des premiers signaux de sécurité sont reçus par un dispositif de commande maître du système de barrière infrarouge à partir de réceptacles de capteur du système de barrière infrarouge. Chacun des réceptacles de capteur comprend des capteurs infrarouges passifs, et un dispositif de commande de réceptacle correspondant. Les premiers signaux de sécurité sont surveillés en continu. Un second signal de sécurité est généré et envoyé à un équipement. Des premiers signaux de sécurité modifiés sont détectés à partir d'au moins un des réceptacles de capteur. Les premiers signaux de sécurité modifiés indiquent une présence humaine à proximité de l'équipement. Les seconds signaux de sécurité sont modifiés pour l'équipement sur la base des premiers signaux de sécurité modifiés, le second signal de sécurité modifié amenant l'équipement à s'arrêter.
PCT/CA2023/050808 2023-06-13 2023-06-13 Systèmes de barrière infrarouge et procédés de ceux-ci Ceased WO2024254671A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604483A (en) * 1995-02-08 1997-02-18 Giangardella; John J. Portable personal security device
US7183912B2 (en) * 2003-03-14 2007-02-27 Suren Systems, Ltd. PIR motion sensor utilizing sum and difference sensor signals
US10843343B2 (en) * 2017-06-26 2020-11-24 Sun Hst Co., Ltd. Access detecting system
US10909439B2 (en) * 2018-02-16 2021-02-02 Pilz Gmbh & Co. Kg System for safeguarding a person from an autonomously operating machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5604483A (en) * 1995-02-08 1997-02-18 Giangardella; John J. Portable personal security device
US7183912B2 (en) * 2003-03-14 2007-02-27 Suren Systems, Ltd. PIR motion sensor utilizing sum and difference sensor signals
US10843343B2 (en) * 2017-06-26 2020-11-24 Sun Hst Co., Ltd. Access detecting system
US10909439B2 (en) * 2018-02-16 2021-02-02 Pilz Gmbh & Co. Kg System for safeguarding a person from an autonomously operating machine

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