First, the temperature
The temperature in the house should be kept at 18-23°C, and the minimum temperature should not be lower than 15°C. If there is a windy weather, the tarpaulin should be shaken to prevent the wind from dropping inside the house. Every day, the size of the air inlet is adjusted according to the weather conditions and the performance of the flock. Check the exhaust fan belt and motor before work everyday to see if the temperature control exhaust fan is sensitive. Watch the weather forecast every day so that prevention work can be done in advance.
Second, ventilation
In the early winter season, it is better to use fresh air and slower air flow. Before winter, repair the area that should not enter the wind, especially the exhaust air at the exhaust fan must be handled well to prevent the chickens from being affected due to the partial cold air, the poor ventilation of the house and the low temperature near the exhaust fan. And it affects production. When the smell of ammonia in the house is large, the temperature in the house should be increased first, and then the ventilation volume should be increased. When the air in the house is relatively dirty, if it is necessary to increase the ventilation, it should be gradually increased, preferably at a high temperature at noon, and each ventilation time is shorter, and the method of multiple passages is better. Never leave dead corners when ventilating. If you want to increase the number of exhaust fans, you must be cautious. After the increase, carefully observe the performance of the flock and proceed without any adverse reactions.
Third, the humidity
Add litter before winter. Winter litter is relatively dry, and it is often sprayed or spray-disinfected. If there is water under the scaffolding, the water under the scaffolding will be released in the autumn when the temperature is high, and then sprinkled with white ash. When the room temperature is appropriate, increase the ventilation. Adjust the nipple drinking line water pressure to less than 10 cm, or adjust the water level of the drinking fountain to less than 1 cm. Always inspect the drinking line. Nipple joints with leaking water in the water dispenser should be replaced or repaired immediately. If the water leakage in the drinking fountains is to be dealt with promptly, it will prevent the ammonia smell in the chicken house from being excessive due to water leakage and affect the health of the chickens.
The narrowband filter is subdivided from the bandpass filter, and its definition is the same as the bandpass filter, that is, this kind of filter allows the optical signal to pass through in a specific wavelength band, but deviates from the outside of this wavelength band. Optical signals on both sides are blocked, and the passband of the narrowband filter is relatively narrow, generally less than 5% of the central wavelength value.
The narrowband filter is subdivided from the bandpass filter, and its definition is the same as the bandpass filter, that is, this kind of filter allows the optical signal to pass through in a specific wavelength band, but deviates from the outside of this wavelength band. Optical signals on both sides are blocked, and the passband of the narrowband filter is relatively narrow, generally less than 5% of the central wavelength value.
Its main parameters are: center wavelength, half maximum width (bandwidth), peak transmittance, cut-off range, cut-off depth (OD value)
Type: Generally, it can be any wavelength within 350nm~2000nm, the transmittance is greater than 70%, the cut-off wavelength is from 200nm to 3500nm, and the cut-off depth is 1OD~6OD
Let the visible light completely filter out only the near-infrared 940nm light that needs to be used, so that the CCD or CMOS photosensitive chip can form a black and white image. Through the calculation method of the biometric system, the human eye, iris, and face are tested to identify different people. Features, play access control security, hotel, entertainment venue monitoring, factory or office attendance.
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