Laser ranging Telescope is a measuring instrument that integrates the species observation and measurement of the laser rangefinder and the long -distance system., Human -machine interface modules and communication modules are composed of several parts.

one, Laser ranging Telescope principle

Laser ranging Telescope generally uses pulse method to measure distance.The process of the pulse method of the pulse method is this: the laser emitted by the ranging meter is accepted by the ranging meter after being reflected by the measured object. The ranging meter also records the time of laser round trip.Half of the speed of light and round -trip time is the distance between the rangefinder and the measured object.

In areas where accuracy requirements of outdoor sports and ballistic calculations are generally adopted/-1 Ordinary laser rangefinder about rice.

In areas where high demand such as construction, land measurement, power monitoring, and engineering measurement are generally used, high -precision laser ranging meters are generally used. At present0, 3 rice.

In addition, because the laser rangefinder needs to ensure the accuracy of the optical system and the laser system in a wide measurement, there is usually a blind spot. At present, the good range of ranging Telescope can be achieved.3, 5 Mi, the general ranging Telescope is 10 arrive 15 Mi is not waiting.

two, Laser ranging Telescope application range

Laser ranging Telescopes are widely used in terrain measurement, battlefield measurement, tanks, aircraft, ships, ships and artillery to target ranging, measurement of clouds, aircraft, missiles, and height of artificial satellites.It is an important technical equipment that improves the accuracy of tanks, aircraft, ships and artillery.Due to the continuous reduction of the price of laser ranging Telescope, the use of laser rangers has gradually begun to use in industries, which can be widely used in industrial surveying and controlling, mines, ports and other fields.

The ranging Telescope is a type of laser rangefinder, or a long -distance laser ranging meter.The measurement distance of the ranging Telescope is generally400-3000 rice.

The ranging Telescope, as the name implies, is also a Telescope, but it is just a laser ranging Telescope.Therefore, the ranging Telescope is divided into single -cylinder ranging Telescopes and bispenton ranging Telescopes.

Single -cylinder ranging Telescope is generally a few hundred- Thousands of yuan.The price of dual -Tube ranging Telescope is generally 10,000 yuan or above.

three, How can I choose a ranging Telescope that suits you?

Several important parameters of the ranging Telescope:

1, Measurement distance: This is the main indicator of the ranging Telescope. Only the Telescope can be measured at the farthest. The measuring distance of the Telescope is generally400-3000 Mi, this distance refers to a straight line distance from the measurement location to the measurement target.There is also an important indicator in the back, the horizontal distance (these two concepts must not be confused).The measuring distance of the ranging Telescope is generally theoretical measurement distance, which will be affected by the weather.So when you choose a ranging meter, you should choose the longest measurement distance than your actual requirements. 20% Left and right ranging Telescope.

2, Measurement accuracy: The accuracy range of the measurement of the distance mirror, the measurement accuracy of the ranging Telescope on the market is generally1 Mi, some of the measurement accuracy of high -precision ranging Telescope can be achieved 02 Mi, for example, Tuyad from the left YP-1000H PRO The measurement accuracy is achieved 02 rice.

3. Whether you can measure high: Whether you can measure the height, many rangefons have this function, so this ranginger can also be called a high meter.The other concept is the absolute height of the measurement target. Do not confuse these two concepts.

4. Whether you can measure angle: Whether the angle can be measured, many rangefinder with this function, so this ranging meter can also be called an angle meter.

5. Whether the target is absolutely height: unlike the concept of high measurement mentioned earlier, it refers to the height of the target itself. This is the function of the high -end rangefinder.

6. Whether the horizontal distance can be measured: The measurement distance mentioned earlier refers to the measurement location to the straight line distance of the measurement target, and the horizontal distance refers to the horizontal distance from the measurement location to the measurement target.These two distances are different.This is the function of the high -end ranging meter.

7. Whether continuous ranging: continuous ranging is very useful in many cases, so this function is also very important.

8. Whether it can be continuously measured: The function of continuous angle measuring angles will have this function on some high -end ranging Telescopes.

Understand the above distance mirror8 Big important functional parameters, you can choose according to your needs, because the ranging Telescope is a measuring Tool. Under the circumstances of economic conditions, it is recommended that you choose a full -range ranging telescopeUsed under work.

[How do middle -aged and elderly people knee pads] How do middle -aged and elderly people protect the knee and the elderly why the middle -aged and elderly people should wear knee protection

The knee joint is one of the most vulnerable joints in the human body. Evilness and lack of exercise can easily cause knee damage.Experts point out that people of different ages have different knee pads, and improper use will damage the knee joint.

How to protect the knee of middle -aged and elderly people

1. Middle -aged people need to avoid high -intensity exercise

Middle -aged people are usually busy with busy work, stressful, and prone to sub -health. Therefore, it is important to take the time to maintain physical exercise to maintain physical health.For most middle -aged people who use cars, sedentary and less movement, exercise should be gradual, and try to avoid suddenly entering high -intensity exercise from the state that does not exercise from all year round.Therefore, in order to protect the knee joint, the middle -aged movement should pay attention to starting from the small load movement of sweating or sweating, and gradually increase the amount of exercise to achieve the effect of strengthening the fitness. Wearing knee care during exercise can effectively avoid knee damage.

2. Elderly people should climb the mountain and climb the stairs

Many elderly people think that climbing stairs and mountain climbing is a way to exercise fitness and saving money, but it is not known that this method is not conducive to protecting the knee joint.When up the stairs, the knee load is basically the weight of its own body. In addition to its own weight, the knee joint must also bear the power of the rushing when going down the stairs. This impact will increase the damage to the knee joint.Therefore, the elderly are the best exercise that has no damage to the knee joint, such as swimming, cycling, walking, etc.During exercise, it can be equipped with the right knee pads. On the one hand, it can prevent injuries to the knee due to improper stress, and on the other hand, it can also keep a warm role.

3. Do not rotate the knee injury to the knee injury

During the warm -up activities, holding your hands on your knees, and turning left for a few laps and a few laps, which is one of the commonly used warm -up methods.For people who have no damage to the knee joint, there is no problem doing this action.However, for patients with knee joints, especially patients with semi -moon plates and osteoarthritis, such actions may further damage the knee joint, severe tearing and card pressure of the meniscus, and need surgery.

For patients with knee joints, the ideal warm -up activity method is: put the knee joints on the position of irreplaceable position, such as sitting position, knee flexion, irreversible.At this time, rotation and motion of the knee joints, decreased joint pressure, and the friction between the joint surfaces is greatly reduced, which is conducive to protecting the injured joint cartilage and half -moon plate.

Why do middle -aged and elderly people wear knee -knee

1. Insulation, the knee muscles and blood vessels are relatively small, and it is not easy to produce heat. The middle -aged and elderly people bring the knee pads to achieve the effect of insulation, prevent cold and moisture invading the joints, and cause arthritis and other diseases.

2. Avoid injuries, knee is an important joint of human movement, especially in the process of exercise, which is particularly easy to collide and abrasion. The knee pad can play a buffer, reduce the collision strength of the knee, and prevent Skin scams.

3. Comfortable, the knee degeneration of middle -aged and elderly people is several times the pressure of its own weight. Bringing knee pads can reduce the pressure on the knee.

4. Healthcare, the middle -aged and elderly people have obvious effects on knee guards on knee rheumatism, arthritis, not flexible joints, and joint diseases such as joint diseases, and can play a role in assisting.

5. Brake, the osteogenesis of the middle and elderly people is relatively loose and fragile, and the actions are slightly larger or the exercise may make the original position. The knee pads can keep the thighs and calves as much as possible on the same straight line to protect the joints.The disease of the knee will not aggravate the condition.

I believe that everyone has understood the role and benefit of the knee pads of middle -aged and elderly people. The benefits of middle -aged and elderly people with knee pads are very much.Don't bring it if you look at the trouble. You can replace the warm or breathable knee -keeping knee -cure according to the changes in the weather, let the knee be protected by a layer of more layers of life, one more life is guaranteed, and the life is more comfortable. Why not?

What are the types of life rafts?

1. Rigid life raft

Rigid life rafts are also called traditional life rafts. The structure is to use galvanized iron, aluminum alloy plates, stainless steel plates or hard plastic materials for the four weeks of life rafts to make several linked air boxes as the main buoyant part of the life raft.Then cover or does not cover the flame retardant material; the top of the raft is equipped with a fixed rigid Tent and entrance, and the bottom of the raft is a wooden lattice board.Usually stored on the sliding shelves on the side of the Ship or driving the deck of the table. When the slide is opened, the slide is opened.

The biggest feature of such life rafts is the simple structure and low cost; but its size is large, heavy and less carrier.

2. Inflatable life raft

The inflatable life raft is divided into qi -deficient life rafts, qi -type life -saving floats, and bloating self -supporting righteous life rafts.

(1) Bloating life raft

Such life rafts provide buoyancy from upper and lower floating tots made of rubber materials. They are made of double -layer waterproof nylon cloth into tents, and they are swollen into round, elliptical or polygons with gas.After the life raft is stacked, it is stored in the glass reinforcement storage cylinder with the genus.The design of the qi -blee -type life raft is advanced, tight structure, good safety, convenient movement, simple operation, and rapid formation, so it is widely used in various civilian and military ships at sea.

There are two types of bloating life rafts, namely mechanical hanging type and throwing type.The mechanical Hanging raft has been inflated before entering the water; the throwing life raft is inflated and shaped on the sea surface, and the life raft may be overwritten during the inflatable formation process.Essence

(2) Blay -type life -saving floating glute

In addition to no tents, the qi -bleaching life -type rescuer, its manufacturing materials, main structure, performance requirements, forming process, storage requirements, genus equipment, etc., are the same as the qi -type life raft, but the application method only has throw -in type investment types.EssenceIt does not have a Tent. After the raft is inflated on the water surface, the personnel in the water can be set in the two asymptom platform or any side of the floating glute from the two sides of the floating glute, which is convenient and fast.The rated passengers are more than 50 people with the bloat -type life rafts with tents, and they can carry up to 50 people.

The double -layer raft of the life -saving floats is located between the upper and lower floating tires.Therefore, regardless of whether it is applied by the sea conditions, the floating glute is in a state of romance (available on both sides) after inflating the sea surface, and no manual correction is required.This kind of life -saving floating glute has a greater impact on sea conditions and climate because there is no Tent, and the main equipment is on the passenger wheel.

(3) Blay qi self -supporting righteous life raft

In order to overcome the overwriting situation of the qi -jellyfield life raft during the formation of the sea surface, to avoid the difficulty of launching the water to support the righteous raft, and to meet the needs of the maritime survival personnel on safety and rapid response.Once such life rafts are overwhelming during the casting process, because the top of the raft is round, it can reduce the contact surface with water.After the inflatable formation is completed, you can correct it yourself.

Bloating life raft performance requirements

1. In terms of life raft, it should be able to withstand exposure of floating for 30 days under all sea conditions.

2. The life raft and its genus can be used safely and normal after being put into the water from the 18M altitude.

3. The life raft floats on the water, and it can withstand that at least 4.5m above the bottom of the raft can repeat the height of the height, not damaged, and does not affect normal use.

4. All passengers and geniuses of life rafts and a sea anchor can be released. They can be dragged at a speed of 3 KN in static water and are not damaged.

5. The life raft should be equipped with a canopy that can be automatically supported when landing.

6. The quota of the life raft must not be less than 6.

7. The total quality of the life raft, the total quality of the items and containers must not exceed 185kg.In addition, it also requires specific requirements for the equipment of the life raft, the installation facilities of the life raft, the strength of the lifting life raft, the dealership, the container of the installation raft, and the free floating drop -off.

storage of qi -jelly -type life rafts

1. The life raft and its storage device should not affect the use of life -saving equipment stored in any other location.

2. In the case of safety and feasibility, as close as possible.In addition to throwing out the life rafts that landed out of the outshore, the life raft should be in this position: that is, the life raft in the landing position, when the full -load Ship is not good for 10 and reaches 20 to any sideWhen the angle of immersion in the edge of the open -air deck of the Ship (from the larger angle of the two), it should be not less than 2 m from the waterline.

3. When the suspended life raft can be used in the state, the two boats should be allowed to complete the login and landing preparations within 5 minutes.

4. It is stored in a safe and shielded place and is protected to avoid damage caused by fire and explosion.Especially the life raft on the oil tanker.It should not be stored above the cargo oil compartment, polluting oil cabin or other explosive or dangerous cargo compartment.

Inspection and maintenance of life rafts

1. Observation inspections of life rafts and their storage and settlement equipment per week to ensure that they are available immediately and make records.

2. Each month, check the rapid decircation, fixing hooks, fixed cables, rope plugs, connecting buckles, and life raft containers on the life raft.It should be repaired immediately so that it is in a good technical state, and it must be recorded.

3. The time interval of the life raft maintenance does not exceed 12 months, and it can be exhibited to 17 months with the consent of the competent authority.

4. The life raft must be maintained at the maintenance station recognized by the competent authority, or the certification personnel approved by the competent authority are inspected on the Ship as required.The main items for maintenance are: the surface quality of the raft (firm paste, damaged, etc.) inspection, inspection of the raft container, inspection of the dissemination of the raft, the presence of the life raft with it, the inspectionCheck, start the punching needle, start the inspection of the rope, and perform an inflatable test and inspection.In short, these inspections should not neglect any small parts, any parts, any part of the loading parts, and any one.Discover all bad situations such as shortage, damage, mildew, etc., must be supplemented, repaired or replaced to maintain its good technical state.

5. Under the general storage and use, the life of the rafts of the life raft is 10-15 years, which exceeds the service life and must be replaced.

6. If the static water pressure releaseer can be replaced on the Ship, there must be a qualified spare parts on the Ship. After the use expires, it should be replaced in time.

7. Static water pressure release device (except for being replaced by itself), the time interval of the maintenance is 12 months; it can be exhibited for 17 months after recognition by the competent authority.

8. The surface of the container of life raft must not be painted. The signs and technical data indicated on the container must be clear and obvious.You cannot be stamped particularly on the container, and you cannot add a fixed incorrectly.

Bloating life raft application method

1. Plug -in life raft

When the Ship is in danger, the raft can be thrown into the sea by manpower or with the help of its own gravity, and rely on the strong rope to pull the inflatable bottle valve to make it inflatable and forming in a very short period of time.

2. Mechanical Hanging

It is mainly used for passenger ships or scientific examination ships and teaching boats.First remove the raft from the storage room room or deck store and hang it on the life raft Hanging rack to pull the inflatable and pull the rope to make it shake on the side of the side.Then it is a climbing platform made by the tape to make the crew and the passenger from boarding the raft from the deck, and then hang the raft to the water.In this way, the occupants avoid difficulty climbing ladder and diving.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

The difference between children's life jacket and adult life jacket

1. The maximum adult life jacket can ensure the use of 140 kilograms of weight. Children's life jacket requires children to use within 45 kg of weight.

2. Adult Lifeline's buoyancy (n) 103, and children's life -saving clothing (n) 83.3.Generally, it is 7.5 kg/24 hours, and children are 5 kg/24 hours, so as to ensure that the surface above the chest can surface.The buoyancy of adult life jackets can float 7.5 kg of iron blocks in fresh water for 24 hours, and its buoyancy must not be reduced by 5 %.The buoyancy of children's life jackets can float 5.0 kg of iron blocks in fresh water for 24 hours.

3. The inside and outside of the child's life jacket should have a significant durable "children" image logo.

What kind of children's life jacket is good

1. The operation is easy to learn

The operation should be simple, the switching airbag is placed in a Smooth place, and the switching airbags must be able to inflatable quickly.Children are not familiar with life -saving equipment, so the operation of life jackets must be simple.There are no long bands on children's life -saving equipment. It is easy to wrap around the swimming equipment of other objects or other people in the water, and it is easy to danger.

2. Make sure that the life jacket is suitable for children's body shape and weight

The volume must not be too large. Children's watering can be used to protect the life jacket. Survival jackets will hinder children's normal activities in the water.Grasp the top of the arm opening and pull up gently.Let the child straight on his head.And see if the life jacket has passed the child's chin or face and whether there is excess space above the Sleeve.If so, life jackets are too big for children.

3. More safety deduction

To ensure the safety of children, the safety buckle of life jackets cannot be lower than two.And can be adjusted according to the baby's body shape.The seat Belt cannot be loosened in the water.The buttons of the seat Belt must be strong and cannot be easily opened.

4. The color should be bright

For example, orange, red and other dazzling colors can make lifeguards see at a glance, and some are also equipped with reflective boards.

5. Comfortable fabric

There are generally two types of life -saving fabrics, one: special nylon material, which is relatively low in price and wide use, but not durable; the other is: neoprene choppen rubber (diving material)., Feel soft and comfortable, friction, as long as high -end life jackets can use this fabric.In order not to rub the child's Skin, the waterproof cloth surface of the Skin can be selected close to the Skin, which will not wear the child's Skin during use.

6. Complete accessories

For example, survival whistle, etc., usually requires life jackets to have reflectives when playing with lower visibility.The life pocket and insurance Belt (passing through the Belt connected to the front film from the back of the life jacket) must be matched.

Children's life jacket purchase misunderstanding

1. Some parents think that various swimming circles can be regarded as life -saving supplies.The Swimming ring is an inflatable water toy. Its material and life supplies are completely different. The inflatable swimming rings can be easily overturned by the waves or leaked by foreign bodies. The child has a high chance of drowning.

2. Select fancy and cute life -saving equipment without paying attention to the material and function of the product. You may buy inferior products.

3. The inflatable airbags sold by some merchants are also counted as life -saving products. The gas Bags are the same as Swimming ring materials. It is relatively easy to scrape. It cannot play a role in life -saving in the sea. It can only be regarded as swimming equipment.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

[What kind of knee pads are good] Which material is better for the knee pads?

Which material is better?

Usually material knee guard

The materials used on the knee pads are usually cotton, hair, leather, and blended materials.

Cotton: strong breathability and hygroscopic resistance, but after washing and.The shrinkage rate is large, about 4-10%.Thermal insulation is average, and it is not resistant to mold.

Mao: The common knee padding fabric raw materials are wool, rabbit hair, camel hair, etc., which are high in warmth, but the breathability is biased. It should not be distributed after sweating. The insect -proof is poor, and it gives people a sense of old dryness.

Leather: animal leather is more breathable and better in warmth, but fear of water; the surface of the artificial leather is not afraid of moisture, but the warmth and breathability are poor.

Blend: With the development of blended fibers, it has made up for some shortcomings of traditional materials to a certain extent, but its moisture absorption, breathable and warm performance is not satisfactory.For example, cotton and polyester blended woven fabrics are known as cotton, and they have the advantages of firmness, stretching, fast drying, and reflection, but the use of moisture and breathability is not as good as pure cotton fabric.

Far infrared knees

Materials such as Temalin Stone and activated carbon fibers are added to the knee pads. It is said that it is said to be released from the human body and the air to release far -infrared rays and negative ions, which can promote and improve blood circulation, enhance metabolism, and relieve pain.However, these materials itself exists in the life cycle. After a period of time, it is easy to fail. If the warm sticker of activated carbon as the raw material, oxygen starts to play a role. It is valid for about 14 hours.Temperature is easy to burn the Skin.Cardiovascular dysfunction, those with bleeding tendencies, and those who are suspected of having a malignant tumor site with caution or disable farming materials or clothing.

Tianmei Dragon Fiber Kneeling

Tianmei Dragon Fiber Knee, also known as the Butamon fiber and De Meilong fiber. It is a temperature -form memory intelligent fiber invented by Japan. It has the highest insulation power of all fibers so far.Its insulation power is three times that of cotton and twice the wool. Its mildew and insect -resistant and cotton hair are better.While the superpower warming power, because it has the following magical features, it is hailed as "the 21st Century Healthy Clothing", which leads to the trend of joint protective gear and clothing development.

1) The insulation ability changes with the changes in the temperature of the outside world.

2) Do not sweat, can volatilize sweat in time.When dry, its ultra -fine fiber component is comfortable with the human body. Once the human body sweats, the automatic adjustment of functional fiber (MRT Fiber) ingredients will become a three -dimensional structure, making the space between the fabric and the Skin of the Skin appointment.Two times when dry, speed up the evaporation of sweat and keep the Skin dry and comfortable.

3) Permanent and personal, wearing softly.It is usually made of two -sided woven methods, which can often be seamlessly woven, more comfortable to wear, no sense of oppression and not easy to loosen.

4) You can gather negative ions in the air to create a comfortable body environment.We know that the forest bath environment with a negative ion concentration of 1000-2000 is the most suitable human body.After wearing the cord of the dragon fiber, you can assemble 1,000 negative ions at any time on your body surface to create a comfortable environment like a forest bath.

Who are suitable for knee pads

1. Various types of cold constitutions.

2. People with various types of joint discomfort, such as degenerative arthritis, rheumatoid arthritis, half -moon plate injury, cymbal cartilage, synovitis and other knee unwell.

3. Elderly, pregnant (birth) women, sensitive to cold and cold changes.

4. Athletes, beautiful and fashionable women who love to wear winter skirts in autumn and winter, people who like outdoor sports such as mountaineering, adventure, fishing, etc.

5. Workers who often come into contact with air -conditioning such as supermarkets, staff who are engaged in frozen, aquatic products processing, agriculture, fishery, construction industry, etc., and office workers who stay in the air -conditioned room for a long time.

6. Those who think it is necessary to keep insulation.

precautions

The knee is an important sports organ of the human body. Our daily schedule is almost inseparable from the knee. As one of the largest joints of the human body, the knee is suffering a huge and continuous load. Its health directly determines the quality of life and life of a person's life and life.Wearing a good knee pad can help us easily cross spring, summer, autumn and winter. Why not do it!