57results about How to "The peripheral circuit is simple" patented technology

The invention discloses a digital control device for a diesel engine and a control method realized by using the digital control device for a diesel engine. The device includes a speed regulation driving main circuit, a shaping circuit, a core processor for segmental PID control, and an input and output device; The input signal of the shaping circuit is a speed sensor signal, and its output signal is a square wave speed signal. The output terminal of the shaping circuit is connected to the external interrupt pin of the core processor, and the I / O port of the core processor is connected to the input and output The equipment is connected; the signal output by the PWM output pin of the core processor is connected to the speed regulation drive main circuit, and the speed regulation output terminal TS of the speed regulation drive main circuit outputs the voltage for adjusting the throttle of the diesel engine; the advantage of the present invention is that the structure Compact, low power consumption, high precision, good speed control performance, high safety and easy to use.

The invention discloses a three-dimensional interface stress sensor which mainly solves the problem of the prior art that the three-dimensional interface stress cannot be measured in the real time. The three-dimensional interface stress sensor comprises a top layer (1), a driving electrode (2), a middle layer (3), a sensing electrode (4) and a bottom layer (5), wherein the driving electrode (2) is coupled on the bottom surface of the top layer (1); the middle layer (3) consists of four separating pillars (31, 32, 33 and 34) which are fixed between the top layer (1) and the bottom layer (5); the sensing electrode (4) consists of a Z-direction sensing electrode (41), an X-direction sensing electrode (42) and a Y-direction sensing electrode (43); the Z-direction sensing electrode (41) is coupled in the middle of the upper surface of the bottom layer (5); and the X-direction sensing electrode (42) and Y-direction sensing electrode (43) are respectively coupled on two adjacent sides of the upper surface and are vertical to each other. The three-dimensional interface stress sensor has the advantages of small geometric dimension, large measurement range, high sensitivity and easy integration, can realize real-time measurement of the three-dimensional interface stress and can be used for rehabilitation medicine, orthopedic surgery, athletic training and shoemaking industry.

The invention discloses a power source management driving chip and an application circuit of the power source management driving chip. The chip is provided with a power source input pin, a ground connecting pin, a peak voltage input pin, a sampling resistance pin, a zero current detecting pin, a current inducting pin and a gate driving pin. A V / I converter, a delaying unit 1, a delaying unit 2, an RS trigger, a mono-stability circuit, a leading edge blanking circuit, an error comparator A1, a Schmitt trigger G1, a NOT gate G2, a follower G3, a three-input NAND gate G4, a NAND gate G5, a NOT gate G6, a counter G7, a logic control unit G8 and an output stage G9 are arranged inside the chip. The power source management driving chip has the remarkable advantages that the complexity of the power source driving chip, the physical area and the power dissipation of the chip and the cost of simplification of a driving power source module are reduced, whether a load is an open circuit or a short circuit can be rapidly detected through an internal module of the chip, and the responding time of a control circuit is shortened.