Directional harmful gas discongesting platform for hospital ward

Directional harmful gas discongesting platform for hospital ward

  • CN 108,798,352 B
  • Filed: 01/30/2018
  • Issued: 08/18/2020
  • Est. Priority Date: 01/30/2018
  • Status: Active Grant
First Claim
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1. A hospital ward carbon dioxide directional fluffing platform, characterized in that the platform includes:

  • a plurality of carbon dioxide concentration detection devices arranged in different areas in a hospital ward;

    the user input equipment is used for receiving the glass surface consistency parameters, the set distance and the set direction input by the user according to the operation of the user;

    each carbon dioxide concentration detection device is used for detecting the carbon dioxide concentration of the area where the carbon dioxide concentration detection device is located, and outputting the detection result serving as the real-time concentration together with the area number corresponding to the area where the carbon dioxide concentration detection device is located;

    the switch control equipment is respectively connected with the plurality of windowing control equipment in the hospital ward;

    the switch control equipment is used for respectively sending corresponding opening control signals to the windowing control equipment;

    each windowing control device is connected with the corresponding window and is used for controlling the opening degree of the corresponding window corresponding to the opening control signal when the opening control signal is received;

    the network camera assembly is arranged on a beam of a hospital ward and comprises an IP camera, a data volume measuring device, a self-adaptive compression device and a network transmission device, wherein the IP camera is used for receiving a shooting direction and shooting image data of a field environment according to the shooting direction to obtain a field environment image, the data volume measuring device is connected with the IP camera and is used for receiving the field environment image and calculating the data volume of the field environment image, the self-adaptive compression device is connected with the data volume measuring device and is used for adjusting the compression strength of the field environment image based on the calculated data volume, and the network transmission device is connected with the self-adaptive compression device and is used for wirelessly transmitting the compressed field environment image to a remote hospital monitoring center;

    wherein the adaptive compression device adjusting the compression strength of the live environment image based on the calculated size of the data volume comprises;

    the larger the calculated data amount is, the higher the adjusted compression strength of the field environment image is, and the compressed field environment image is obtained;

    the automatic light supplementing device is connected with the network camera shooting assembly and used for receiving the field environment image and executing automatic light supplementing processing on the field environment image so as to obtain and output an automatic light supplementing image;

    a first image processing device, configured to receive the automatic fill-in image, further connected to the user input device, and configured to receive the set distance and the set direction, perform luminance histogram processing on the automatic fill-in image, obtain a maximum luminance value among luminance values of each pixel in the automatic fill-in image as an upper luminance value limit, further obtain a minimum luminance value among luminance values of each pixel in the automatic fill-in image as a lower luminance value limit, form a data item table formed by taking the lower luminance value limit to the upper luminance value limit as a horizontal index and taking the lower luminance value limit to the upper luminance value limit as a vertical index, where a length from a pixel having a luminance value as a horizontal index of the data item to a pixel having a luminance value as a vertical index of the data item in the automatic fill-in image in a direction that is different from the horizontal direction is smaller than the set distance The total number of pairs of pixel points;

    the second image processing device is connected with the first image processing device and used for determining the average value of pixel values of pixel points in each row and the average value of pixel values of pixel points in each column of the automatic light supplementing image, calculating the row average value of the automatic light supplementing image based on the average value of the pixel values of the pixel points in each row of the automatic light supplementing image, and calculating the column average value of the automatic light supplementing image based on the average value of the pixel values of the pixel points in each column of the automatic light supplementing image;

    the third image processing device is connected with the second image processing device and used for calculating the variance of each average value based on the average value of pixel values of pixel points of each row of the automatic supplementary lighting image to be used as the row variance of the automatic supplementary lighting image and calculating the variance of each average value based on the average value of pixel values of pixel points of each row of the automatic supplementary lighting image to be used as the row variance of the automatic supplementary lighting image;

    the fourth image processing device is respectively connected with the first image processing device, the second image processing device and the third image processing device, and is used for receiving the data item table, the row average value, the column average value, the row variance and the column variance and determining the brightness consistency parameter of the automatic supplementary lighting image based on the data item table, the row average value, the column average value, the row variance and the column variance;

    the fifth image processing device is respectively connected with the user input device and the fourth image processing device and is used for matching the brightness consistency parameter of the automatic supplementary lighting image with the glass surface consistency parameter, if the matching is successful, a glass type signal is output, and if the matching is failed, other types of signals are output;

    the real-time amplitude detection device is connected with the fifth image processing device and used for determining the real-time opening amplitude of the window in the automatic light supplementing image based on the image analysis of the automatic light supplementing image when the glass type signal is received;

    the IMX6 processing chip is respectively connected with the plurality of carbon dioxide concentration detection devices, is used for determining the area number of the area where the carbon dioxide concentration detection device with the highest carbon dioxide concentration is located, and is also connected with the IP camera, and is used for adjusting the shooting direction of the IP camera so that the shooting direction of the IP camera faces the area where the carbon dioxide concentration detection device with the highest carbon dioxide concentration is located based on the determined area number of the area where the carbon dioxide concentration detection device with the highest carbon dioxide concentration is located;

    the IMX6 processing chip is further connected with the real-time amplitude detection device and the switch control device respectively, and is configured to receive the real-time opening amplitude, and send an opening control signal matched with the determined highest carbon dioxide concentration to the switch control device when the real-time opening amplitude is not matched with the determined highest carbon dioxide concentration, so that the switch control device controls the window opening control device of a window corresponding to the shooting direction of the IP camera;

    wherein the fourth image processing device determining the brightness uniformity coefficient of the auto fill light image based on the data entry table, the row mean, the column mean, the row variance, and the column variance comprises;

    adding the square of the row variance and the square of the column variance to obtain a divided term, for each data item in the data item table, subtracting the row mean from the horizontal index thereof to obtain a first multiplication value, subtracting the column mean from the vertical index thereof to obtain a second multiplication value, multiplying the value thereof by the first multiplication value and the second multiplication value to obtain a product value thereof, adding the product values of all data items of the data item table to obtain an addition value, and dividing the addition value by the divided term to obtain and output a brightness consistency parameter of the auto-fill image;

    the IMX6 processing chip is further used for sending an opening control signal matched with the determined highest carbon dioxide concentration to the switch control equipment when the real-time opening amplitude reaches the maximum value, so that the switch control equipment can control the window opening control equipment of a window nearby the window corresponding to the shooting direction of the IP camera;

    the IP camera head comprises a passive pixel sensor, which is called a passive pixel sensor and is composed of a reverse biased photodiode and a switching tube, wherein the photodiode is a PN junction composed of a P-type semiconductor and an N-type semiconductor, the reverse biased photodiode is equivalent to a diode which is reversely biased and is connected with a MOS capacitor in parallel, when the switching tube is opened, the photodiode is communicated with a vertical column line, a charge integration amplifier reading circuit at the tail end of the column line keeps the voltage of the column line to be constant, when signal charges stored by the photodiode are read, the voltage of the signal charges is reset to the voltage level of the column line, and meanwhile, the charges which are in direct proportion to optical signals are converted into charges by a charge integration amplifier to be output.

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