53results about How to "Guaranteed Conversion Accuracy" patented technology

A vehicle includes a battery pack including a secondary battery and a first control device, a second control device provided separately from the battery pack, and a converter. The converter is configured to select a conversion formula from options depending on a situation and use the selected conversion formula to convert at least one of a first current upper limit value and a second current upper limit value into at least one of a first power upper limit value and a second power upper limit value.

This invention relates to a fault collection detecting apparatus and its method and the system comprises upper computer and down computer. The down computer adopts data collection board and is used to data collection of multiple-path spot and buffer and pre-process, while the upper computer adopts PDA and receives the sent data by the down computer through the serial port. The down computer realizes the whole spot monitor tasks, such as analog signal collection, AD conversion and simple data process part and controls the hardware scale and power consumption of the system. The upper computer realizes the further data process, spot real time analysis display element, history data re-display.

The invention provides a digital trusted instrument with a CAN interface. An external mechanical rotation angle variation quantity is transferred to a second automatic angle adjusting machine, and a fine channel angle digital quantity is obtained through an SDC module. The external mechanical rotation angle variation quantity is transferred to a first automatic angle adjusting machine through a speed reducer, and a coarse channel angle digital quantity is obtained through an SDC module. The coarse channel angle digital quantity and the fine channel angle digital quantity are subjected to coarse and fine combined operation of a single chip microcomputer, and a 17-bit trusted instrument position digital quantity is obtained. The trusted instrument position digital quantity is transmitted to a servo controller by a CAN bus driver module through a CAN data bus. A power supply module supplies power to the SDC modules, the single chip microcomputer and the CAN bus driver module. According to the digital trusted instrument, the direct influence on precision by excitation power supply interference is small, the conversion precision is ensured, and the calculation workload of a servo control computer is reduced.

The present invention relates to a cursor-type high-accuracy and high-speed A / D conversion apparatus. The conversion apparatus in the present invention comprises m conversion units, wherein each conversion unit is used for A / D conversion of a section of consecutive digits; and further comprises: m-1 rounding up switching groups, wherein an input end of each of the rounding up switching groups is connected to the conversion unit of a corresponding digit section, so as to output a minimum voltage value, which is output by a voltage dividing circuit, greater than a voltage to be measured in the conversion unit of the corresponding digit section; m-2 rounding down switching groups, wherein an input end of each of the rounding down switching groups is connected to the conversion unit of the corresponding digit section, so as to output a maximum voltage value, which is output by the voltage dividing circuit, smaller than the voltage to be measured in the conversion unit of the corresponding digit section; and a data latch, wherein input ends of same are successively connected to digital signals output by the m conversion units according to digit sections from high to low, so as to realize synchronous output of digital signals. By means of using cursors with different accuracies to continuously carry out refined measurement on a voltage to be converted, the accuracy of analog-digital conversion is guaranteed, and the conversion speed is improved at the same time.

The application provides a data conversion method, device and electronic equipment for vector data, specifically determining the maximum grid and the minimum grid according to the maximum area and minimum area of ​​the vector data; scanning the vector data according to the maximum grid for the first time, and obtaining Multiple cells; record the value of the cell within the vector boundary of the vector data as the raster attribute value of the vector data; sequentially reduce the area of ​​the scanning unit; according to the reduced scanning unit, the cells crossing the vector boundary are again Scan to obtain multiple cells; record the value of the cell within the vector boundary as the raster attribute value of the vector data; and so on. By gradually reducing the scanning unit, this scheme can convert larger connected areas with larger grids to improve computational efficiency, and convert smaller connected areas with smaller grids to ensure conversion accuracy, so as to achieve In the case of guaranteeing accuracy, high computational efficiency is achieved.

The invention discloses a digital direct regulation direct current voltage stabilizing and regulating power supply. The power supply is a PWM switch power supply and controlled by a single chip microcomputer, and central voltage digital quantity is taken as a voltage stabilizing and regulating comparison reference. A main control signal is a high-frequency pulse signal with peak analog-digital conversion and gradual pulse instantaneous control. The power supply comprises a plurality of high-frequency controllable rectifier circuits, the output voltage is gradually decreased by the same rate, the gating is decided by the output voltage, the main control signal is taken out from the endpoint of a rectifier coil with the maximum number of turns, and the control precision is ensured by using large file size to simulate the control of small file size. A secondary control signal is taken out from the direct current of an output end, the timely inspection of A / D is carried out, the output voltage is compared with the central voltage, and the difference of the output voltage and the central voltage is used for determining the frequency of a micro-movement switch and slightly changing pulse duty cycle to correct the systematic errors. The power supply has small size, light weight, great power, high efficiency, stable voltage, small ripple, high quality, integrated stabilization and regulation and arbitrary regulation within a wide range at different places, thereby being the ideal power supply in the digital information age.