The performance of the Baby Monitor Security Camera
The performance of the baby monitor is reflected by its built-in parameters and function combination. The following shows some properties that a high-quality and applicable baby monitor should have. The requirements for baby monitors in this part apply to all audio/video, digital/analog home baby monitors and wireless baby monitors, and are not changed due to the combination mode of the monitoring end and the control end.
Baby Monitor Security Camera,smart 1080P camera PTZ Baby Monitor,Night Vision Solar Surveillance camera,PTZ rotation,Motion detection Shenzhen Fuvision Electronics Co., Ltd. , https://www.outdoorsolarcamera.com How to prevent citrus, litchi, longan, ulcer disease?
Citrus ulcer disease symptoms: Leaves, yellow oil-like spots appear on the back of the leaves at the beginning, and gradually expand into nearly round shape later. The lesion penetrated the blade slightly on both sides, and the tissue was corked and rough. The central depression was cracked like a gray-brown crater. There are yellow halos around the lesion, with a diameter of 3- to 5-mm, and sometimes several lesions are linked together to form an irregularly shaped large lesion and the diseased leaves fall off earlier. Branches and lesions on branch shoots are similar to those on diseased leaves. They are nearly round, oval, or combined into irregular shapes, light yellow or yellow-brown, with prominent protrusions but no yellow halos around them. The lesions can reach deep into the phloem, and when the lesions surround the entire foliage, the shoots will die. The fruit, lesions and leaves and shoots on the similar, the surface of corky protrusions and the central gap is more pronounced, when serious, causing fruit drop.
Ulcer disease is one of the most important diseases of fruit trees. It harms citrus, litchi, longan, and other fruit trees and poplars. The disease damages the leaves, shoots and fruits, often causing fallen leaves and dead branches, and even dead seedlings. The damage of orange fruit of mature horses caused serious fruit drop, light disease, and quality, resulting in economic losses. Citrus canker disease causes wounds from late March to November, especially high-temperature, rainy weather, and damage caused by pests such as leaf miners, which mainly damage new shoots and fruits.
The pathogen of ulcer disease is a kind of bacteria. The pathogen can survive in the host tissue for several months. The pathogenic bacteria latent in the diseased tissue overwinter. During the spring rains the following year, the bacteria spilled out of the disease and spread through wind, rain, insects, and foliage contact. Bacteria fall on young shoots, young leaves and young fruit, and are invaded by stomata, lenticels or wounds. In the case of high temperature and rainy conditions, the bacteria can be repeatedly infested and continue to expand. Tender shoots are 3–12 cm long, which is the period of invasive germs. Damage caused by leaf miners is an important way to infect the disease.
2. Control measures (1) Strictly implement the quarantine system. It is forbidden to transfer the grapefruit seedlings, rootstocks and scions out of the ward, and to prohibit the export of sick fruits. Once the diseased grapefruit, seedlings, scion or fruit are found, they are immediately destroyed.
(2) Establish a disease-free nursery. The disease-free Shatian pomelo fine seed collection garden was selected to cultivate disease-free rootstocks and breed disease-free grapefruit seedlings. The introduction of disease-free grapefruit seedlings in the new planting grapefruit in Shatian is the most effective preventive measure.
(3) New planted grapefruit garden focuses on prevention. Seedlings can be sterilized with 700-1000 mg/kg of agricultural streptomycin plus 1% alcohol for 15 minutes. If a disease-free zone is found for the first time in small quantities, it should be completely excavated and burned. Since then, it has been checked frequently. Once a sporadic disease strain is found, it should be immediately cleared and sprayed.
(4) The arable land grapefruit should strengthen cultivation management. 1 Timely prevention and control of leafminers, swallowtail and other pests in each stage of pomelo shoots to reduce the wounds of branches and leaves to prevent the invasion of bacteria. 2 Do a good job of controlling shoots. The result tree is to wipe out the summer shoots thoroughly, and put the autumn shoots early. The diseased trees need to control the summer and autumn shoots, leaving more mature spring shoots. The application of potash fertilizer in the early stage of new shoots promotes shoots to be robust. 3 The diseased branches, diseased leaves and diseased fruits were cut off in time and burned in a concentrated manner. During the clearing of the garden in winter, fallen leaves, fallen fruits and dead branches were burned. Each cut off one diseased branch, that is, disinfect the branches with alcohol. 4 It is forbidden to enter the orchard when it is dry on rainy days or in the morning.
(5) Chemical control. 100 times liquid or 1000-1500 mg/kg streptomycin or 0.5% equivalent Bordeaux mixture can be used. Matters needing attention: 1 cut off all the diseased branches, diseased leaves and fruit before spraying; 2 master the spraying period. Young trees should be sprayed for the first time at 3 to 5 centimeters after shoots at each shoot stage, sprayed every 5 to 7 days for the second time, and the leaves should be sprayed green for the third time. Mature trees were sprayed once at 10 days, 30 days and 60 days after flowering. The shoots were sprayed once a week for the leaf shoots in autumn and once in the green period. 3 Spray once after each pruning or after heavy winds and heavy rain. Focus on grasping shoot stage and young fruit expansion period to protect young tissues and achieve control effects. (Author: Huai Bi)
Low power display: the baby monitor, especially the monitoring terminal, must work continuously for a long time. Once the product is low in power, it cannot remind parents to charge it in time. When the power continues to be consumed until it is exhausted, the control terminal will be unable to continue to receive any signal.
Voice trigger prompt: Voice trigger means that once the monitoring terminal detects the noise caused by the abnormal behavior of infants or children, it will be displayed at the control terminal through the noise prompt lamp.
The transmission signal frequency can be adjusted: the monitoring end of the baby monitor provides audio and video digital signals to the control end by transmitting wireless signals. If the transmission frequency of the monitoring end is not selected properly, it will produce electromagnetic interference with other household appliances, digital equipment, etc., which will affect the normal use of the product. Therefore, it is necessary to select a baby monitor that allows users to adjust the frequency of the transmitted signal at the monitoring end.
Adjustable volume: a friendly baby monitor will provide a volume selection knob or button at the control end. When parents are in an environment with loud background sound, they can hear the activity sound of babies and children by turning up the volume; When it is late at night or in a quiet environment, the low volume will not affect the normal rest of the people around you when you are answering normally.
VOX function: VOX is the abbreviation of sound activation start. The monitor with VOX function is in standby mode under normal conditions, and the screen and horn stop working, thus reducing the energy consumption of the product; Once it is detected that the monitored object has an abnormal sound exceeding the set standard, it will immediately flash its alarm lamp at the control terminal or directly light up the screen, and simultaneously play the audio and video information sent by the monitoring terminal.
Digital signals and analog signals: baby monitors using digital signals, such as Baohushen baby monitors, will have better transmission efficiency and provide users with clearer sound and picture quality; Moreover, digital signals can be encrypted to prevent being intercepted and interpreted by other receivers, effectively protecting users' family privacy; The electromagnetic signal interference of digital signal will be lower than that of analog signal, so as not to affect the normal work of other household appliances and equipment.
Monitoring end extension: The baby monitor with a friendly user experience should allow users to use one control end to manage the activities of several monitoring ends at the same time, especially in some families with multiple children. This good scalability not only reduces the trouble of carrying multiple control ends at the same time, but also reduces the objective additional expenses for these families.
Temperature display: some products will have the function of realizing the current indoor temperature, and even can set a critical value. Once the room temperature exceeds or falls below the critical value, an alarm signal will be sent. This is a very considerate function for temperature sensitive newborn children or sick children.
Intercom function: The high-end baby monitor allows parents to have a direct conversation with the baby (child) at one end of the monitoring end through the control end, so that children who are alone can provide psychological comfort. If children have any temporary needs or words, they can be known without bothering the guardian to run to the child.
Signal range: theoretically, the signal sent by the monitoring terminal can be received by the remote control terminal, which is more convenient for users to use the baby monitor flexibly. Now more and more families live in large family rooms, even multi-storey villas, and the baby monitor with strong signal receiving ability provides these families with a more convenient way of use. Parents no longer need to set the room beside the children in order to see and hear their children's every move. They can even take the control terminal to go out for a short walk!
Power supply mode: The baby monitor with built-in battery can automatically switch to the battery power supply mode when the external AC power supply is suddenly stopped, so that the user will not be affected to continue to monitor the child in the power failure environment.