45results about How to "Accurate signal acquisition" patented technology

The invention provides a signal acquisition system for an injection molding machine. According to the signal acquisition system, the input end of a differential amplifier circuit (20) is connected to the output end of a linear opticalcoupler isolating circuit. The input end of an AD converter circuit (30) is connected to the output end of the differential amplifier circuit. The input end of a WIFI signal transmitting board (40) is connected with the output end of the AD converter circuit (30). The input end of the opticalcoupler isolating circuit (50) is connected to a digital signal output end of a controller of the injection molding machine. The output end of the opticalcoupler isolating circuit (50) is connected to a corresponding IO port of the WIFI transmitting board. The input end of the linear opticalcoupler isolating circuit (60) is connected to an analog signal output end of the controller of the injection molding machine and used for isolating the acquisition system from the injection molding machine. According to the signal acquisition system for the injection molding machine, high-low levels of corresponding IO ports are adopted for different processes during production of the injection molding machine, acquisition of signals of the injection molding machine is achieved, wireless acquisition of the signals is achieved by applying the WIFI transmitting board, and the automatic acquisition and automatic storage functions are achieved.

The invention discloses an alarm device of the termination of transfusion. The invention consists of two metal clip electrodes and a circuit. The first metal clip clamps the exposed part of a transfusion needle and is led out to be connected with one end of a capacitance-voltage transformation module by a guide wire, so as to form one electrode of a capacitance sensor; the second metal clip clamps a drip tube of the transfusion needle and is led out to be connected with the other end of the capacitance-voltage transformation module by the other guide wire, so as to form the other electrode ofthe capacitance sensor, further to constitute the capacitance sensor. The invention makes use of the electrical conductivity of liquid medicine to make the variable-polar distance capacitance sensor;when in transfusion process till the end of the transfusion, the media in the drip tube changes from liquid medicine to air, the distance between the first electrode and the media is rapidly increased and the capacitance changes correspondingly. Therefore, the capacitance sensor can cause great change of capacitance at the end of transfusion; the collected capacitance signal is input into a detection circuit through the guide wire, and then the invention can emit sound and light alarm. The invention adopts the non-contact capacitance sensor to collect the signal of the termination of transfusion, and the invention has accurate signal collection, stability, reliability and strong interference resistance.

The invention discloses a direction operating mechanism for an intelligent body building vehicle. The direction operating mechanism comprises an upper fixing plate, a lower fixing plate, a rod end joint bearing and an elastic body, wherein the upper fixing plate can be fixed with a handlebar of the intelligent body building vehicle, the lower fixing plate can be fixed with a vehicle frame of the intelligent body building vehicle, the elastic body can realize the reset function, the rod end joint bearing comprises a rod end and a support body used for supporting the rod end to realize the 360-degree omnibearing swinging, the support body of the rod end joint bearing is fixedly connected with the lower fixing plate, the rod end of the rod end joint bearing passes through the elastic body to be fixedly connected with the upper fixing plate, the elastic body is supported and propped between the upper fixing plate and the lower fixing plate so that the handlebar connected with the upper fixing plate can realize the 360-degree omnibearing swinging in a manner relative to the vehicle frame connected with the lower fixing plate, and in addition, the resetting is realized. The structure can provide the 360-degree omnibearing steering action, the fast original position returning can be realized after the steering force elimination, and the direction operating mechanism has the characteristics that the manufacture is simple, the manufacture cost is low, the realization is easy, the collected signals are accurate, the sensitivity is high, and the operation is convenient.