49results about How to "Short power-on time" patented technology

The invention discloses a device for detecting a storage battery through timing discharge under PWM (pulse width modulation) control. The device comprises a DSP (digital signal processor), a PWM high-frequency signal circuit, a PWM low-frequency signal circuit, an on-off logic judgment circuit, an electromagnetic isolation circuit, an FET (field effect transistor) discharge circuit, a set current analog output circuit and a discharge current detection feedback circuit. According to the device, the DSP is utilized to emit high-precision PWM signals, meanwhile, fast on-off of multiple groups of FETs are controlled, so that the storage battery realizes output of constant current close to short circuit current instantaneously, and the performance condition of the storage battery is judged through rapid detection for a current peak and attenuation change by the DSP. The device can detect the storage battery at any stage in the life cycle, and with the adoption of the DSP, PWM control signal precision and current detection precision both guarantee accuracy of a detection result and universality of a detection range. Due to extreme short conduction time, little heat is generated, and repeated continuous detection can be realized.

The invention discloses a special carbon material internal heat serial connection graphitization production device, which comprises a graphitization furnace (1), and the two ends of the graphitization furnace (1) are respectively furnace head conductive electrodes (2) and furnace tail conductive electrodes (3). , the furnace head conductive electrode (2) and the furnace tail conductive electrode (3) are respectively provided with a furnace head two-way pushing device (4) and a furnace tail two-way pushing device (5), and the furnace head two-way pushing device (4) is two The end is connected with the furnace head soft busbar (6), the furnace tail two-way pushing device (5) is connected with the furnace tail soft busbar (7), the furnace head two-way pushing device (4) and the furnace tail two-way pushing device (5 ) outside is the fixed busbar (8). The invention has short energization time, large furnace loading capacity, low energy consumption, no furnace tail jumper electrode, simple connection mode between the bus bar and the conductive electrode, less cooling water consumption, and low maintenance cost.

The invention provides an electromagnetically triggered friction type compression release device, which includes a trigger mechanism, two pull hooks, a locking mechanism, an upper pressure plate, two triggers, two torsion springs, two tension springs, a lower pressure plate and a mounting seat , the trigger mechanism is installed on the top of the mounting seat, the upper pressure plate, trigger, torsion spring, tension spring and lower pressure plate are all arranged in the mounting seat, the locking mechanism passes through the left and right sides of the mounting seat, and the two hooks are respectively connected with the locking mechanism. The left and right ends are connected; in the locked state, the trigger mechanism restricts the rotation of the two triggers, the tension spring pulls the trigger, the trigger is pressed on the upper platen to compress the locking mechanism, and the two hooks are locked; in the unlocked state, the trigger mechanism moves to unlock Two triggers, the torsion spring drives the trigger to rotate, and the tension spring is released from the trigger, releasing the pressing of the trigger on the upper pressure plate, releasing the locking mechanism, and the two hooks are separated. The invention has large bearing capacity, rapid action, repeatable test, insensitive to high and low temperature, and can be applied to various connection and separation occasions.

The invention discloses a gate device of an automatic ticket checker and a control method of the gate device. The control method comprises (A) when a controller receives an instruction of opening door leaves, opening the door leaves and keeping in the opening state for first preset time, then closing the door leaves and powering on an electromagnetic brake for second preset time to lock the door leaves; and (B) when the controller does not receive the instruction of opening the door leaves, judging whether the door leaves are freely turned or forced to be turned according to the relationship between the detected door leaf position and the closed door leaf position, and if the door leaves are judged to be freely turned, powering on the electromagnetic brake to lock the door leaves for the second preset time, otherwise, sending warning information indicative of passing of a ticket check passage without permission if the door leaves are passed without permission.According to the invention, a driving mechanism and the electromagnetic brake are powered on only within a few seconds when the door leaves are opened / closed and locked, and are powered off in other time, to therefore reduce the energy consumption of the gate device.