73results about How to "Avoid further damage" patented technology

An LED driver circuit is provided for protecting one (or more) LEDs connected in series from over-current damages which may result from a short circuit condition. The driver circuit includes a current control circuit for receiving an input signal from a power source and providing a current output for powering the LED. A voltage sensor detects a voltage across the LED. An LED current restriction circuit such as a switching element restricts a current flow into the LED. A short circuit response circuit controls the LED current restriction circuit dependent on a comparison between the voltage detected by the voltage sensor and a predetermined threshold value. When the detected voltage is less than or equal to the threshold value, the response circuit determines a short circuit, and a signal is sent to the current restriction circuit to restrict current flow into the one or more LEDs.

Thermally adjustable surgical tools include a conductor and a ferromagnetic material. The ferromagnetic material may be quickly heated when subjected to high frequency alternating current through the conductor. The ferromagnetic material may also cool rapidly because of its relatively low mass and the small thermal mass of the conductor. The thermally adjustable surgical tools may be used to sculpt, melt, break and/or remove biological material. The thermally adjustable surgical tools may also include balloon catheters which can heat fluid to thereby treat biological material.

Thermally adjustable surgical tools include a conductor and a ferromagnetic material. The ferromagnetic material may be quickly heated when subjected to high frequency alternating current through the conductor. The ferromagnetic material may also cool rapidly because of its relatively low mass and the small thermal mass of the conductor. The thermally adjustable surgical tools may be used to sculpt, melt, break and/or remove biological material. The thermally adjustable surgical tools may also include balloon catheters which can heat fluid to thereby treat biological material.

The present invention is a novel, theft-resistant, and senior-friendly packaging for consumer and retail products that is cheap and easy to manufacture. The packaging is designed to prevent individuals from gaining access to the enclosed product through tampering with the packaging while at the same time meeting or exceeding federal child-resistant and senior-friendly guidelines. The packaging incorporates plastic material and multiple cuts to be tear-resistant and to halt the propagation of a tear, if one should occur.

The invention relates to a hydroxyethyl chitosan fiber preparation method, including the following steps: (1)dispersing chitosan fiber in the mixed solvent of ethanol and isopropanol, adding aqueous alkali, maintaining the temperature of the system in the range of minus 10 DEG C to 20 DEG C, dipping for 5-120min and then basifying to produce basified chitosan fiber; (2)adding isopropanol solution of epoxy ethane into the above system and rising the temperature of the system to 30-70 DEG C, then etherifying for 0.5-8h, taking out of the fiber and dispersing the fiber in ethanol aqueous, adding acetic acid solution drop by drop until the mixture becomes neutral, then washing with ethanol, dehydrating through anhydrous ethanol, and finally airing in air. In this way, partially substituted hydroxyethyl chitosan fiber can be prepared. Hydroxyethyl chitosan fiber with liquid adsorption and liquid retention capabilities can be prepared by introducing hydrophilic hydroxyethyl groups to the chain of chitosan macromolecule. The hydroxyethyl chitosan fiber has potential application value on the treatment of serous wounds; the preparation method is simple, and the substitution degree is easy to control.

The invention discloses a control device for a magnetic suspension bearing system. The control device for the magnetic suspension bearing system comprises a magnetic suspension bearing controller used for controlling a bearing in the magnetic suspension bearing system, and a motor controller used for controlling a motor in the magnetic suspension bearing system, wherein the motor controller is further used for controlling the motor for stopping rotation when the magnetic suspension bearing system is in fault, and the magnetic suspension bearing controller is further used for controlling stopping shaft suspension of the magnetic suspension bearing system after the motor is controlled by the motor controller for stopping rotation. Through the control device, the magnetic suspension bearing system in fault is prevented from being further damaged.

A system for detecting a damage condition associated with an agricultural machine. The system can include a component of the agricultural machine and a movement sensor configured to measure a movement parameter associated with the component. The system can include a controller communicatively coupled with the movement sensor. The controller can include a processor and associated memory. The memory may store instructions that, when executed by the processor, configure the controller to perform operations. The operations may include monitoring the movement parameter associated with the component and detecting a change in the monitored movement parameter over time that is associated with a damage pattern. The damage pattern may be indicative of damage to the agricultural machine. The operations may include automatically initiating a corrective action associated with preventing further damage to the agricultural machine when it is detected that the monitored movement parameter has experienced the damage pattern.

The invention discloses an ecological environment monitoring and early warning method and system based on big data, and belongs to the technical field of environmental protection monitoring. The method comprises the following steps of acquiring the environment data acquired by a plurality of environment data acquisition points; performing classified statistics on the environmental data to obtain acorresponding environmental data table; analyzing the environment data table, judging whether abnormal environment data exists or not, and obtaining a first judgment result; when the first judgment result is yes, based on the category of the abnormal environment data, sending the early warning information to the corresponding supervisor, and storing an environment data table corresponding to theabnormal environment data and the early warning information in an abnormal monitoring database; and when the first judgment result is negative, storing the environment data table to a normal monitoring database, so that the real-time monitoring of the ecological environment is achieved, the abnormal condition of the ecological environment in the monitored area can be found in time, corresponding supervisors can be notified, and accordingly the rapid processing of the abnormal condition is achieved, and further the damage to the ecological environment is reduced or even avoided.

A 360° camera system that eliminates problems associated with capturing real-time encounters between first responders, i.e., law enforcement personnel (such as police officers) and civilians such that all individuals involved in the encounter can be held accountable for their actions, wherein multiple cameras are provided, e.g., two to three cameras, consisting of cameras that acquire images in a 360° range, as opposed to conventional cameras that shoot up to a range of 170°, such that questions about sequence of events and their circumstances are eliminated.

The invention discloses an orthopedic nail taking device convenient for taking out broken nails. The device comprises a supporting plate. Connecting rods are fixedly connected to the left side and theright side of the lower surface of the supporting plate. The connecting rods are arranged in a limiting groove. The bottom ends of the connecting rods are fixedly connected with a sliding plate. Theleft end and the right end of the sliding plate are respectively in sliding connection with sliding grooves which are formed in the left side surface and the right side surface of the inner wall of the limiting grooves in a sliding mode. The orthopedic nail taking device is provided with a feeding device. A downward pressure can be applied to a spring through the connecting rods when a screw tap moves downwards. The spring is compressed, so that the spring can exert an upward elastic force on the connecting rods under the action of the pressure. As a result, the screw tap can exert an upward pulling force on a broken nail in the process of forming an internal thread until the broken nail is separated from a bone. Therefore, a round groove can be prevented from being formed in the peripheryof the broken nail in the nail taking process. In this way, a fracture part can be prevented from being damaged again.

The invention discloses a steel slag framework-based ultrathin antiskid wearing layer and a preparation method thereof. The antiskid wearing layer is prepared from the following components in parts byweight: 20-26 parts of a steel slag aggregate, 70-76 parts of aggregate chips, 2-5 parts of filler, 6-10 parts of water and 8-12 parts of modified emulsified asphalt. The ultrathin antiskid wearing layer is prepared by mixing the steel slag aggregate, the aggregate chips, the filler, water and the modified emulsified asphalt and the like in a certain proportion and sequence. The grain sizes of the steel slag aggregate are 2.36-4.75 mm, the aggregate chips are basalt or diabase chips, the grain sizes of which are smaller than 2.36 mm, the filler is sulphate aluminium cement and limestone flour, the modified emulsified asphalt is obtained by modifying waste rubber flour, an emulsifier is dodecyl trimethylene diane, and an additive is obtained by compounding ammonium chloride and polyethylene glycol. The steel slag framework-based ultrathin antiskid wearing layer can be widely applied to road preserving engineering, thereby providing a novel path to scaled application of fine grain sizeparts of the steel slag.

The invention relates to a sun visor for a vehicle which has a visor body and a fastening region, wherein the fastening region is for fastening the visor body to a counterpart attached to a vehicle.

The invention relates to the field of equipment maintaining, in particular to a tamping coke oven tamping hammer fiction piece local bonding method. The method comprises the steps that a. a pneumatic shovel blade is used for carrying out clearing on a broken position of a tamping hammer old friction piece, and a bonding face is formed; b. the length of the bonding face is measured, the size of a new friction piece is determined hereby, and the fact that a gap exits between the new friction piece and the old friction piece after bonding is guaranteed; c. the new friction piece is cut and ground to meet the size requirement in the step b; d. a tamping hammer processed by the step a is placed on a bonding machine, a bonding face is upward, and bonding materials are evenly arranged on the bonding face in a coating mode; e. the polished new friction piece is placed on the bonding face in a paving mode and is pressed until the new friction piece is flat, and accurate alignment is guaranteed; and f. the bonding machine is started, the new friction piece and the tamping hammer are pressurized to specific pressure, the specific pressure is maintained for a certain period, the bonding machine is shut down, pressure is removed, and the tamping hammer is taken off. The method is good in bonding effect and high in bonding intensity, and the service life of the friction piece can be prolonged.

The invention relates to the field of oilfield workover, discloses anti-water-lock workover fluid and a preparation method, and aims to solve the technical problem of low temperature resistance of the anti-water-lock workover fluid in the prior art. The anti-water-lock workover fluid is prepared from the following components in percentage by weight: 0.3-0.6 percent of xanthan gum, 0.5-2.0 percent of high-temperature-resistant fluid loss agent, 0.2-0.5 percent of sterilizing agent, 0.2-0.5 percent of anti-water-lock agent, 0.5-2.0 percent of inhibitor, and the balance of water. The technical effect of improving the temperature resistance of the anti-water-lock workover fluid is achieved.

The invention discloses a tackifying particle for tackifying a rail transit wheel-rail interface, and a preparation method thereof. The preparation method comprises the following steps: 1, adding silica powder into water to form a premixed liquid; 2, carrying out spray drying on the premixed solution obtained in step 1 to form a particle green body; and 3, sintering the particle green body obtained in step 2 to obtain the finished product particle. The tackifying particle prepared by the invention can effectively avoid the problems of wheel rail wear and damage aggravation caused by hard particles in the tackifying process while meeting the wheel rail tackifying requirement; and tests show that the wear rate of the wheel rail material in the tackifying process is reduced by 70% compared with the traditional sand particle tackifying process, and the wheel rail sample has a smooth surface and has no obvious damage such as particle indentation and the like.

The disclosed invention provides a device and method to detect leaks in pipelines and heal them instantly using twin ball technology. The device comprises two twin balls of novel construction inserted into the pipeline. The sensor ball receives acoustical data through internal sensors. Once the threshold of the sound level is surpassed, the smart ball will send a signal to the second flowing ball. The second ball will flow towards the leaking outlet and eject a healing fluid to close the leak and prevent further damage. The sensor ball will also alert the user to the size and location of the leak via Wi-Fi monitoring and text messaging. This twin balls technology could be used in pipelines of varying sizes and flow rates.

The invention discloses a repair technology of a bridge pavement. The repair technology comprises the steps of S1, site survey, wherein the damaged pavement is subjected to the site survey; S2, sealing of half a bridge deck construction area, wherein firstly, a half-side area of a bridge is sealed; S3, concrete digging, wherein a groove is formed through an excavator; S4, locating and welding of an expansion joint, wherein a segmented spot-welding fastening method is adopted; S5, concrete casting, wherein a two-side symmetric continuous one-time concrete casting mode is adopted; S6, concrete maintenance, wherein after concrete is casted, plastic film is adopted for covering; S7, sealing of the other half the bridge deck construction area, wherein after half a bridge deck is repaired, the other half the bridge deck is sealed, and the construction steps are repeated; S8, detection, wherein the detection is conducted to determine that a pressed road groove and a section are consistent with a road camber, the surface is flat, and corrugated fluctuation and an obvious wheel track do not exist. The process is perfected, a vehicle can be allowed to pass when the pavement is repaired, normal transportation is guaranteed, the repaired pavement can be maintained, the pavement is prevented from being damaged again within a short time, and manpower and financial resources are saved.