Abstract: A method of multi-triggering includes calculating a specific distance according to a plurality of parameters, deploying a plurality of earthquake detectors used for detecting a vertical acceleration of a surface vibration of the earth, and determining whether an earthquake happens or not according to the plurality of earthquake detectors.

Abstract: A needle protecting module of an injection device in connecting with a syringe has a needle base, a needle body a tube module, a mounting tube, an elastic unit, and a stopping unit. The syringe has a tube body and an axis. The needle body transfixes the needle base and communicates with the tube body for medication injection. The needle base is removably engaged with the tube body and bearing the needle protecting module is transfixed by the needle body. The tube module is mounted around the needle base and has an annular space. The mounting tube is movably inserted into the annular space. The elastic unit is mounted in the annular space and abuts both the mounting tube and the needle base bilaterally. The stopping unit is moveably mounted in the annular space and is selectively engaged with the mounting tube.

Abstract: Particular embodiments described herein provide for an electronic device, that includes a main body, an interconnect attached to the main body, where the interconnect can electrically couple with different sized first housings, a hinge attached to the interconnect, where the hinge can rotatably couple the interconnect with the main body, and a porch, where the porch can accommodate different sized second housings.

Abstract: An adjustable wrench has a wrench body, a clamping element, and a ratcheting jaw. The wrench body has a handle, a head, and a thumbscrew. The head is formed on the handle and has a connecting block, a fixed jaw, a curved slot, two pin holes, a positioning pin, a mounting recess, two pivot holes, and a sliding slot. The clamping element is connected to the wrench body and has a sliding bar, a ribbed slab, and a movable jaw. The ribbed slab is formed on the sliding bar and is mounted in the sliding slot. The movable jaw has an engaging surface and a positioning block. The ratcheting jaw is a curved block capable of sliding forward and retracting backward inside the curved slot and has two mounting boards, a receiving recess, an engaging surface, an abutting surface, an engaging protrusion, a holding recess, and an elastic element.

Abstract: Particular embodiments described herein provide for device that includes a first housing, a cradle, and a hinge that rotatable couples the first housing to the cradle. The hinge includes a switch bolt configured to selectively provide friction torque to the hinge, a torsion spring configured to provide spring torque to the hinge, and a switch mechanism to activate and deactivate the switch bolt, wherein the friction torque provided by the switch bolt is greater than the spring torque provided by the torsion spring.

Abstract: A disposable pre-filled syringe has a protecting tube, a medication filling tube, a separating plug, a pushing module, and a needle module. The medication filling tube is made of chemically inert material and is mounted in the protecting tube. The separating plug is mounted in an end of the medication filling tube. The pushing module is slidably inserted into the medication filling tube opposite to the separating plug. The needle module is mounted on an end of the protecting tube.

Abstract: Particular embodiments described herein provide for device that includes a first housing, a cradle, and a hinge that rotatable couples the first housing to the cradle. The hinge includes a switch bolt configured to selectively provide friction torque to the hinge, a torsion spring configured to provide spring torque to the hinge, and a switch mechanism to activate and deactivate the switch bolt, wherein the friction torque provided by the switch bolt is greater than the spring torque provided by the torsion spring.

Abstract: A piezoelectric loudspeaker includes an oscillator, two damping members and a plurality of terminals which are disposed in a loudspeaker box. The oscillator includes a plate and two piezoelectric members coupled to two sides of the plate. The oscillator is disposed in an accommodation trough of the loudspeaker box, and has a fixed end and a free end. The damping members are made of silicone and disposed in the accommodation trough. The damping members are pressed against an edge of the free end of the plate of the oscillator. The terminals are connected with the plate and the piezoelectric members of the oscillator, respectively. Through the damping members, the present invention provides a better shock absorption effect to effectively reduce the noises caused by the free end of the oscillator and to effectively enhance the tone.

Abstract: A system and method instantly on-site analyze seismic acceleration signals measured from a primary wave of an earthquake and at a detecting site. The system includes an embedded computing host and a signal preprocessing module. Hardware preprocessing is executed on the seismic acceleration signals; and whether the earthquake is a seismic event is able to be determined according to a seism determining logic. Seismic acceleration signals are converted into ground velocities and ground displacements to obtain a peak ground displacement. A seismic fracture time parameter is calculated through the ground velocities and ground displacements and then a seismic magnitude of the earthquake is obtained. According to the peak ground displacement and the seismic magnitude, an epicentral distance is further calculated. Then a peak ground acceleration of the earthquake's shear wave at the detection site is able to be obtained through the seismic magnitude and the epicentral distance.

Abstract: An earthquake alarm broadcasting equipment for an earthquake detecting system includes a receiver for receiving a detection result from the earthquake detecting system, wherein the detection result at least indicates a level of earthquake intensity, a memory device for storing a trigger level, a use scenario set by a user and a contingency measure corresponding to the use scenario, a processor coupled to the receiver and the memory device for generating a control signal according to the detection result, the trigger level and the contingency measures, and a functional module coupled to the processor for broadcasting an earthquake alarm and the contingency measures to the user.

Abstract: The present disclosure provides an earthquake warning method. The earthquake warning method includes deploying a set of seismic device in a zone according to a criterion to detect an earthquake, generating a first earthquake warning signal when the earthquake is detected, receiving the first earthquake warning signal and a second earthquake signal; executing an decision determination according to the first earthquake warning signal and the second earthquake signal; sending first earthquake warning signal or a second earthquake signal according to the decision determination and broadcasting an earthquake warning.

Abstract: A method of multi-triggering includes calculating a specific distance according to a plurality of parameters, deploying a plurality of earthquake detectors used for detecting a vertical acceleration of a surface vibration of the earth, and determining whether an earthquake happens or not according to the plurality of earthquake detectors.

Abstract: An adjustable wrench has a wrench body, a clamping element, and a ratcheting jaw. The wrench body has a handle, a head, and a thumbscrew. The head is formed on the handle and has a connecting block, a fixed jaw, a curved slot, two pin holes, a positioning pin, a mounting recess, two pivot holes, and a sliding slot. The clamping element is connected to the wrench body and has a sliding bar, a ribbed slab, and a movable jaw. The ribbed slab is formed on the sliding bar and is mounted in the sliding slot. The movable jaw has an engaging surface and a positioning block. The ratcheting jaw is a curved block capable of sliding forward and retracting backward inside the curved slot and has two mounting boards, a receiving recess, an engaging surface, an abutting surface, an engaging protrusion, a holding recess, and an elastic element.

Abstract: A safety syringe has a barrel, a pushing element, a retracting element, and a needle group. The barrel is hollow and has a needle-group mounting end, an operating grip end, and a barrel lumen. The pushing element is retractably mounted in the barrel lumen and has a pushrod chamber. The retracting element is airtightly and slidably mounted in the pushrod chamber. The needle group is connected to the needle-group mounting end of the barrel. The present invention can pull the retracting element to move relative to the pushing element to form a low pressure condition in the pushrod chamber as a vacuum status. After the injection, a vacuum attraction force in the pushrod chamber can retract the used needle group into the pushrod chamber for safe use of the safety syringe.

Abstract: A method of determining an earthquake event for an earthquake detecting system includes retrieving at least one initial wave characteristic related to each earthquake data among a plurality of earthquake data; utilizing a support vector classification (SVC) method to establish an earthquake determination model according to the initial wave characteristic; and determining whether new earthquake data belong to an earthquake event or a non-earthquake event according to the earthquake determination model when the new earthquake data are received.

Abstract: An earthquake detection system includes an earthquake data receiving module, for receiving a plurality of earthquake data and generating an earthquake parameter according to the plurality of earthquake data; a threshold value setting module, for setting an earthquake threshold according to the earthquake parameter; and an earthquake detector, for determining whether a new earthquake data belongs to an earthquake event according to the earthquake threshold when the new earthquake data is received, in order to generate a determination result; wherein the threshold value setting module further adjusts the earthquake threshold according to the determination result.

Abstract: An electronic device includes a first body, a supporting arm, at least one first hinge, a first coupling member and at least one second coupling member. The first hinge is connected between the first body and the supporting arm. The supporting arm can rotate relatively to the first body through the first hinge. The first coupling member is disposed in the first body. The second coupling member is disposed in the supporting arm. When the second coupling member moves to at least one predetermined position, the first coupling member and the second coupling member are attracted by each other.

Abstract: A ratcheting tool including a handle formed with an integral yoke at a first end and a tool head coupled to the yoke at a pivot. The tool head has a toothed hub facing rearwardly of the pivot and into the yoke. A locking spool is rotatably carried in the yoke adjacent the toothed hub. The locking spool has a first face, a second face, and a first tooth extending along both the first face and the second face and engaging the toothed hub. The locking spool is rotatable between a first position in which the first face is adjacent the toothed hub, thereby locking the tool head in a selected angular position with respect to the handle, and a second position in which the second face is adjacent the toothed hub such that the tool head is pivotable about the pivot.

Abstract: A circuit for a front-end tunable filter of a communication and broadcast receiver and a tuning method thereof are described herein. In one aspect, the circuit of the tunable filter may be independent of the signal reception link of the receiver. The pre-filter (104) includes a variable capacitance (146) which is adjusted by a tuning signal (160). A negative resistance element (144) and the pre-filter (104) may form an oscillator. The negative resistance element (144) is controlled by an amplitude control signal (162) outputted from an oscillation amplitude control circuit (142). The oscillation amplitude control circuit (142) stabilizes the amplitude of a radio frequency signal (130) in a preset range. An oscillation frequency control circuit (140) stabilizes the frequency of the signal (130) in a preset frequency range by a tuning signal (160). The tuning is completed until both of the amplitude and the frequency of the oscillation signal meet the preset ranges.

Abstract: A hinge structure suited for connecting between a first body and a second body is provided, such that the first and the second bodies can rotate in relative to each other. The hinge structure includes a first pivoting member, a second pivoting member, and a third pivoting member. The first pivoting member has a first fixing portion fixed to the first body and a first winding portion extending from the first fixing portion. The second pivoting member has a second fixing portion fixed to the first body and a second winding portion extending from the second fixing portion. The third pivoting member is disposed on the second body and has a shaft. The first winding portion and the second winding portion respectively wind around the shaft. The first fixing portion and the second fixing portion are located at opposite sides of the shaft. An electronic device is also provided.