538 results about "Crash helmet" patented technology

The invention provides an early warning method and device for a high falling accident of a construction worker. The early warning method for the high fall accident of the construction worker comprisesthe following steps: establishing a data set, and respectively training a target detection network and a behavior detection network by adopting a transfer learning method; acquiring a monitoring video of a preset area, inputting the monitoring video into the trained target detection network, calibrating an operator, a safety helmet and a safety belt, and judging whether to output equipment abnormality alarm information or not according to the existence and wearing positions of the safety helmet and the safety belt; inputting a worker target color image detected by the target detection networkinto the trained behavior detection network; extracting a skeleton key point sequence of a worker, connecting joints, evaluating the correlation between skeleton key points, estimating the posture ofthe worker according to a preset worker action category and the unsafe posture of the corresponding worker, and giving an alarm when detecting that the behavior of the worker is abnormal.

An conditioning system is shown for a helmet having an impact resistant body with an exterior, an interior which defines a head receiving cavity, a front region and having a back region which is located adjacent a lower edge of the helmet body. A first opening is provided in the helmet body located at the back region of the helmet body adjacent a lower edge thereof which acts as an air intake opening. A blower fan communicates with the air intake passage for drawing air into the intake passage and forcing the air from the back region of the helmet in the direction of the front region thereof. A thermoelectric cooling element is located in the helmet interior in communication with the intake passage downstream of the blower fan. The thermoelectric cooling element has a cold side and a hot side. A DC power source is provided for powering the thermoelectric cooling element. An external heat sink is located on the helmet exterior and is connected to the hot side of the thermoelectric cooling element by means of a second opening in the helmet body. Air passing over the thermoelectric cooling element is cooled and air conditions the head receiving region of the helmet.

The invention discloses a safety helmet wearing detection and tracking method based on improved YOLOv3, and relates to the technical field of image recognition. The method comprises the following steps: (1) preparing data and making a training set; (2) constructing an improved YOLOv3-MobileNetV2 target detection model; (3) performing video stream real-time recognition through the safety helmet wearing detection model; (4) predicting the position of the prediction frame of the next frame by using the state of the detection frame of the current frame without the safety helmet, matching the intersection ratio of the detection frame and the prediction frame to realize the association of the front frame and the rear frame, and finally tracking and counting the constructors without the safety helmet; and (5) taking the central point of the detection frame without wearing the safety helmet as a target tracking track point, and completing the drawing of the tracking track. According to the invention, safety helmet wearing detection and tracking counting of people who do not wear safety helmets are realized, and the detection speed and accuracy of an original YOLOv3 target detection model are greatly improved.

An electrical power system for crash helmets is described, including a connector being disposed at an end of a visor, where the connector is configured to conduct electrical current, a switching system configured to control activation of the electrical power system, the switching system being coupled to the connector, and a distribution system configured to conduct the electrical current from the connector to the switching system, the distribution system being coupled to the visor.

The invention discloses a thermal power plant on-site safety helmet wearing detection method, which comprises the steps of obtaining historical video pictures with workers in a monitoring area, and forming a safety helmet wearing detection data set; labeling the safety helmet wearing detection data set, and randomly dividing the safety helmet wearing detection data set into a training set and a test set; according to the obtained safety helmet wearing detection data set, generating an anchor frame corresponding to the safety helmet wearing detection data set and suitable for the monitoring area; training the improved YOLOv3 model by using the training set to obtain a helmet wearing detection model; adjusting the model confidence of the helmet wearing detection model; and carrying out real-time detection on the wearing condition of the safety helmet in the monitoring area based on the safety helmet wearing detection model. On the basis of the improved YOLOv3 model, real-time detection of safety helmet wearing of a thermal power plant on site is achieved, the method can adapt to complex scenes on site, mAP of safety helmet wearing detection is improved, the safety awareness of workers can be improved, and safety production on site is helped to be carried out in order.

A crash helmet includes a helmet body, a face mask, and a binding device for attaching the face mask to the helmet body. Thus, the face mask is mounted on and removed from the helmet body easily and rapidly by operation of the binding device, so that the crash helmet is assembled and disassembled easily and rapidly, thereby facilitating a user mounting and dismantling the crash helmet. In addition, the face mask is mounted on the helmet body by the binding device without needing a metallic spring to prevent the crash helmet from being inoperative during a long-term utilization, thereby enhancing the lifetime of the crash helmet.

The invention provides a protective collar for use with a full-face crash helmet, particularly for use in motor sports. The collar is at least partially formed from a resilient material that in use extends peripherally entirely around a user's neck. The collar has a recess in which a lower part of the crash helmets is received and secured, and helmet retaining means (e.g loop-pile fastening strips) are provided for retaining the helmet within the recess. The recess has an upwardly facing bottom surface which abuts the lower part of the helmet and a peripherally extending, inwardly facing wall surface which extends upwardly from the bottom surface. The wall surface closely fits against the lower part of the helmet around the periphery of the helmet. The collar is shaped to limit movement, both laterally and in a fore-and-aft direction, of the wearer's head in the event of a violent acceleration or deceleration, such as may occur in an accident.

An electrical power system for crash helmets is described, including a storage cell configured to provide electrical energy to a power system, the storage cell being coupled to a processor and sealed within a lining of a helmet, and a pocket formed within the lining of the helmet, the pocket being configured to house the system. Also described is a connector configured to couple the storage cell to a power source, the power source being configured to charge the storage cell, and a distribution system configured to deliver electrical current from the storage cell to the power system.

Provided are active Thermoelectric Cooling (“TEC”) systems/apparatuses for the purpose of cooling a person's head with or without the person wearing a safety helmet or hard hat.

A crash helmet assembly is provided including a lightweight shell or lattice of sufficiently rigid material and geometric design to surround but not contact the user's head. The helmet is affixed to a rigid vest-like garment by interconnecting rigid straps and braces such that the resulting combination deflects compression impact forces away from the head and neck and onto the user's shoulders and upper torso.

The invention discloses a constructor dressing standardization detection method and device based on visual analysis, and the method comprises the steps: collecting an image sample of a constructor, capturing a local image of the head of the constructor, and dividing the local image into a safety belt wearing mode and a safety helmet non-wearing mode; training a classification model on the sample set by utilizing ResNet to obtain a helmet wearing classification model; acquiring a real-time video stream of a construction site, and extracting to obtain a key frame image; analyzing the key frame image by utilizing an OpenPose human body posture estimation algorithm, judging whether a human body key point is detected or not, and if so, positioning a head area and an arm area; otherwise, judgingwhether the short-sleeved shirt is worn or not in the arm area by adopting a skin color model; calling a safety helmet wearing classification model to classify and identify the head area, and judgingwhether a constructor wears the safety helmet or not. According to the invention, 24-hour all-weather nonstandard behavior detection of constructors can be realized, so that the safety supervision ofa construction site is realized, and the construction efficiency and safety are improved.

The invention discloses a safety warning intelligent crash helmet. The intelligence comprises electronic hardware and control software, and the safety warning intelligent crash helmet comprises a crash helmet shell (1), a solar charging device, a tension controller, a temperature control device, a communication line and a microcomputer (4), wherein the solar charging device charges a microbattery (10) in such a way that light energy is converted into current by solar panels (12). The tension controller acquires signals which are processed by the microcomputer (4), when the tension is less that a value, a horn buzzs for sounding a safety alarm to remind a user rightly wearing the crash helmet, and the head safety is protected when in accident. The invention avoids the head hurt caused by wearing haphazardry; and the solar charging device provides a power supply of a crash helmet additional device, thereby the energy is saved.

A restraint system is disclosed which limits the range of motion of a driver's helmet, and consequently the flexure of an individual's neck. In particular, the proposed system is laterally symmetric and comprises an arrangement of straps including a first strap extending from the “chin” of the helmet downwardly over the shoulder to an attachment point near the shoulder blade. A second strap extend form the occipital region forward over the shoulder and is attached on the chest. A separate strap also extends from the chin to the mid-point of the second strap. A fourth strap extends from the occipital region to the mid-point of the first strap. In addition, a harness is disclosed comprising a strap which encircles the check and straps which encircle the thighs, and use of a VELCRO fastener to anchor the restraint system to the harness.

A quick release device comprises an anchor to couple to a safety helmet and a latch to couple to a tether. The anchor may include a cylindrical wall with an indentation circumferentially located thereon. The latch is configured to be attached to and removed from the anchor and may include a barrel, a plurality of ball bearings, and a push-pull button. The barrel may include a sidewall in which the ball bearings are rigidly retained when the latch is in a locked state and the ball bearings are loosely retained when the latch is in a released state. The push-pull button may cover one end of the barrel and may be pushed to attached the latch to the anchor and pulled to remove the latch from the anchor.

The present invention discloses a method for monitoring emotion and health condition of operating personnel and a safety helmet. The safety helmet comprises a safety helmet main body, a heart rate sensor module, a blood pressure sensor module, a brain wave sensor module and a control device. The method for monitoring the emotion and health condition of the operating personnel comprises the following steps: acquiring heart rate, blood pressure and brain wave signal data of the operating personnel; and comparing the data with pre-stored heart rate, blood pressure and brain wave signal thresholdvalues and judging that the operating personnel is in normal emotion and health condition when the data is between the threshold values. The safety helmet is used as a body health device carrier for the operating personnel, thus realizes purposes of health monitoring and mood monitoring for wearers by detecting human body head signals, thus realizes convenience and accuracy of monitoring human body fatigue and unstable mood, reduces emergence of casualties accidents, and effectively solves problems that current mainstream human body monitoring devices are inaccurate in monitoring data, inconvenient to wear during work progress, lack of mood monitoring functions, etc.

The invention relates to a high-strength plastic which comprises the following components in parts by weight: 40-70 parts of ABS (acrylonitrile-butadiene-styrene), 3-8 parts of interfacial coupling agent, 3-10 parts of toughener, 0.5-1.0 part of dispersing and lubricating agent, 5-10 parts of silicon dioxide and 10-15 parts of glass fiber. The high-strength plastic provided by the invention has excellent strength, can be widely used in automobile industry, and is often used for manufacturing daily necessities, such as automobile parts, home appliance industry, architectural decoration industry, crash helmets, motorcycle fenders, heelpieces, snowfield sporting goods, toys, clocks, loudspeaker shells, suitcases, buttons, cosmetic cases and the like, and advertising products of nameplates, ornaments and the like.