5results about How to "Low linearity" patented technology

This invention relates to the field of power management technology, and particularly to an intelligent integrated power system and control method based on multi-source collaboration, including a main power module, a backup power cluster, an energy management unit, a voltage adaptation module, a status monitoring unit, a communication module, and a load interface. Compared to existing technologies that typically use a single type of battery pack as a backup power source, which suffers from slow response speed and difficulty in withstanding instantaneous high-power surges, this invention employs a heterogeneous energy storage system composed of parallel lithium battery packs and supercapacitor modules as the backup power cluster, and uses a bidirectional DC / DC converter for intelligent control. This solution fully leverages the different advantages of lithium batteries (high energy density) and supercapacitors (high power density and rapid response), enabling the system to provide both long-term backup power support and instantaneous high-power discharge, thereby significantly improving the dynamic response capability, power support reliability, and overall service life of the backup power source.

This invention discloses a time amplifier with self-cancelling quantization noise and a fractional-frequency division phase-locked loop (PLL), belonging to the field of frequency synthesis technology. The self-cancelling quantization noise time amplifier of this invention is based on a resistor-discharge type time amplifier. A control signal containing quantization error information is output through a slow-slope control signal generator to control the slow-discharge path of the time amplifier. This achieves K-fold time error amplification while simultaneously canceling fractional-frequency division quantization noise. The PLL architecture built based on this amplifier eliminates the need for a large-delay loop digital-to-time converter. The phase noise of the slow-slope control signal generator is suppressed by the time amplification gain, breaking the performance trade-off of traditional architectures. This invention achieves a low-noise, low-power, and high-linearity fractional-frequency division PLL design without degrading the performance of the time amplification phase detector.

The application provides a differential detection system of a high-voltage direct-current bus and a vehicle, the system comprising a differential sampling circuit, a first operational amplifier, an isolation circuit and a signal processing circuit; the differential sampling circuit is connected with a positive electrode and a negative electrode of the high-voltage direct-current bus and grounded; the inverting input end of the first operational amplifier is connected with the differential sampling circuit and the output end of the first operational amplifier, and the non-inverting input end of the first operational amplifier is connected with the negative electrode of the high-voltage direct-current bus and the common ground of the differential sampling circuit; the isolation circuit is connected with the first operational amplifier and the differential sampling circuit, and is connected with a power supply voltage and grounded; the signal processing circuit is connected with the isolation circuit, and the signal processing circuit determines the voltage of the high-voltage direct-current bus based on the output current of the isolation circuit. The system performs double-end sampling on the voltage of the high-voltage direct-current bus through differential sampling, has high sampling accuracy, high anti-interference ability, and is provided with the isolation circuit, and thus has high overall use safety.

The application discloses an anti-heparin-antithrombin complex antibody and application thereof in a heparin drug anticoagulation effect detection method, and comprises an antibody molecule capable of combining with a heparin-antithrombin complex, a light chain variable region amino acid sequence of the antibody molecule is shown as SEQ ID NO:1, and a heavy chain variable region amino acid sequence is shown as SEQ ID NO:2. The antibody molecule can be prepared into a kit for detecting the anticoagulation effect of the heparin drug, and has the characteristics of simple operation, high sensitivity, good repeatability, wide linearity and the like, and is suitable for high-throughput testing of the anticoagulation effect of the heparin drug.

The application provides an isolated detection system and a vehicle. The isolated detection system comprises a power supply circuit, a signal input circuit, an isolation circuit and a signal processing circuit. The power supply circuit is configured to output a first low-voltage power supply. The signal input circuit is connected to a positive electrode of a high-voltage DC bus, a negative electrode of the high-voltage DC bus and the power supply circuit. The isolation circuit is connected to the signal input circuit and the power supply circuit. The signal processing circuit is connected to the isolation circuit and configured to determine the voltage of the high-voltage DC bus based on the output current of the isolation circuit. The system can directly convert the high-voltage power supply of the high-voltage DC bus into a low-voltage power supply and output the low-voltage power supply to the high-voltage side circuit through the power supply circuit, so that the high-voltage side circuit can work normally, the power supply cost is low, the high-voltage side power supply and the low-voltage side power supply are isolated from each other, the power supply stability is high, the use reliability of each device in the system is improved, and the detection and operation reliability of the system are improved.