The function of compass

The use of compass compass, also known as compass, Luo Geng, compass disk, etc. , is the predecessor of the modern compass. According to the principles of the Book of Changes and Heluo, and referring to the operating principles of the five stars, seven strategies and stars of the sun, the ups and downs of mountains, rivers and plains on the earth are observed, the compass is improved, the orientation is determined, and the terrain is surveyed. The "Mao" on the compass represents the East and "Wu" represents the South. You represent the west, Zi represents the north, Xun represents the southeast, Kun represents the southwest, Gan represents the northwest and Gen represents the northeast. There are many kinds of compasses, the most commonly used ones are three-point disc, three-in-one disc, three-point disc, easy disc, mysterious disc and unique disc compasses used by various factions. Compass is geomantic omen, and it is an indispensable tool for me to engage in geomantic omen activities. In fact, when it comes to the role of the compass, many people will only think of the role of Taoist priests in seeing Feng Shui. In fact, according to the different methods of use, the compass has many little-known functions.

The role of the Feng Shui compass The compass is a tool of the Feng Shui master, which can be said to be the rice bowl of the Feng Shui master. Every master will pass on the most important clothes and secrets to his favorite capable disciple before he dies. The compass is also one of the relics handed down from the guru. Master passed on Buddhism and disciple's mantle, which proved that he had given his disciples a lifetime of hard work, expectation and full support. Jianghu people usually call it giving his rice bowl to his apprentice, hoping to continue and carry forward his legacy. If a feng shui practitioner, whether a master or a novice feng shui apprentice, has no master's mantle and no key technical secrets passed down, he usually does not have the qualification of direct inheritance. In Jianghu dialect, it means "drifting snow", that is, a gentleman who made his debut halfway, or a gentleman who taught himself to study. Such a gentleman who has never studied with him can simply inspect some Yang Zhai Feng Shui or Yin Fen Feng Shui. But be careful when you do feng shui, because breaking feng shui and doing feng shui are completely different things. There are many ways to break feng shui, such as gossip, mystery, change of heart, witchcraft and so on. And to do feng shui, you must have excellent and complete feng shui skills. Usually, only through inheritance can we acquire geomantic omen and metaphysics to control the fortune of life and reverse Gankun. Especially in the Feng Shui Tomb of Yin and Yang Master, we should be more careful. Don't bury people at will without excellent yin-yang feng shui burial, so as not to harm others and yourself. It's horrible to kill people in a ghost house, from genocide to casualties, which can be seen in less than a hundred days.

The function of compass in life is to determine the direction, which is the most basic.

See feng shui, used by rural superstitions.

As a wheel, this is for children in small classes.

As a magnetic toy, this is for primary school students.

When fighting, it was junior high school students.

As a cushion on the dining table, this is used by my mother.

What is an electronic compass? What is an electronic compass? What's the role? Electronic compass, also called digital compass, is a method to determine the North Pole by using geomagnetic field. In fact, it is an electronic compass. Nowadays, electronic compasses are generally composed of magnetoresistive sensors and fluxgates.

Although GPS is widely used in navigation, positioning, speed measurement and orientation, its accuracy is greatly reduced or even unusable because its signals are often blocked by terrain and objects. Especially in urban areas with high-rise buildings and forest areas with dense vegetation, the effectiveness of GPS signals is only 60%. Moreover, at rest, GPS can't give course information. In order to make up for this deficiency, the method of integrated navigation and positioning can be adopted. Electronic compass products are designed to meet the needs of users. It can effectively compensate the GPS signal, ensure that the navigation azimuth information 100% is effective, and it can work normally even if the GPS signal is out of lock, so as to ensure that the star is not lost.

Electronic compass can be divided into plane electronic compass and three-dimensional electronic compass. The plane electronic compass requires the user to keep the compass level when using it, otherwise, when the compass is tilted, it will also give the change of course, but in fact the course has not changed. Although the plane electronic compass has high requirements for use, it is a good cost-effective choice if the carrier attached to the compass can always remain horizontal. The use of three-dimensional electronic compass in plane electronic compass has been strictly restricted, because there is an inclination sensor in the three-dimensional electronic compass. If the compass is inclined, it can compensate the inclination of the compass, so that even if the compass is inclined, the heading data is still accurate. Sometimes, in order to overcome the temperature drift, the compass can also build temperature compensation to minimize the temperature drift of tilt angle and pointing angle.

The principle of electronic compass

The three-dimensional electronic compass consists of three-dimensional magnetoresistive sensor, biaxial tilt sensor and single chip microcomputer. The three-dimensional magnetoresistive sensor is used to measure the earth's magnetic field, and the inclination sensor is used to compensate when the magnetometer is not horizontal. Single-chip microcomputer processes the signals of magnetometer and inclination sensor, as well as data output and soft iron and hard iron compensation. The magnetometer adopts three vertical magnetoresistive sensors, and each sensor detects the geomagnetic field intensity in the axial direction. The sensor whose advancing direction is called X direction detects the geomagnetic field vector value in X direction; The sensor on the left or in the Y direction detects the vector value of the geomagnetic field in the Y direction; The downward or z-direction sensor detects the vector value of the geomagnetic field in the z direction. The sensitivity of the sensor in each direction has been adjusted to the optimal point according to the component vector of the geomagnetic field in this direction, and it has a very low horizontal axis sensitivity. The analog output signal generated by the sensor is amplified and sent to MCU for processing. The measuring range of magnetic field is 2 gauss.

What's the use of ancient compasses? The ancestor of the compass appeared in the Warring States period. It is made of natural magnets. It looks like a spoon with a round bottom, which can be balanced on a smooth "field" and can rotate freely. When it is at rest, the handle of the spoon will point to the south. The ancients called it "Sina", and in the book Han Feizi at that time, there was: "Wang Li Sina took the time first." "Sooner or later" means square, east. Guiguzi recorded the application of Sina, and Zheng people took Sina with them when picking jade to make sure they didn't get lost. In the Spring and Autumn Period, nephrite and jadeite with hardness of 5-7 degrees can be polished into various shapes, so natural magnets with hardness of only 5.5-6.5 degrees can also be used to make SiNa. In the book Lun Heng, Wang Chong of the Eastern Han Dynasty made a clear record of the shape and usage of Sina. Sina is made of a whole natural magnet after pondering. The handle of the spoon is guided by the pole, so that the center of gravity of the whole spoon falls right in the middle of the bottom of the spoon. The spoon is placed in a smooth field, surrounded by a four-dimensional stem and branches, which synthesize 24 directions. This design was completed through long-term research after the ancients carefully observed many phenomena related to magnetism in nature and accumulated a lot of knowledge and experience. The appearance of Sina is the practical application of people's understanding of the polarity of magnet fingers. However, Sina also has many defects. Natural magnets are hard to find, and they are easy to lose their magnetism when they are impacted and heated during processing. Therefore, Sina's magnetism is relatively weak, and the contact with the site should be very smooth, otherwise it will be difficult to rotate because of too much friction and resistance, and the expected guiding effect will not be achieved. Moreover, Sina has a certain volume and weight, which is inconvenient to carry, which may be the main reason why Sina has not been widely used for a long time. Sina consists of a bronze disc and a magnetic spoon made of a natural magnet. The bronze disc is engraved with 24 directions, and the magnetic spoon is placed on the central circular surface of the disc. When it is at rest, the tail of the spoon points to the south.

Please accept it, thank you!

What does a friend's compass do? Compasses are generally used in geomantic omen, which can be used to determine the location of yin points, and can also be used for town houses, lucky, evil spirits and so on.

What is the difference between a compass and a 30-minute compass? There used to be a geomantic compass, but now there is a digital compass, but in general it is an instrument that uses the earth's magnetic field to determine the direction.

What does the geomantic compass do at night? Feng shui and magic are tricks, and they can't fundamentally change fortune. There is only one way to be lucky all your life, that is, to do more good deeds and accumulate virtue. When virtue accumulates to a certain extent, good luck will always accompany you. At this time, if we continue to do good deeds, the hidden virtues will accumulate more and more, which will not only bring good luck to ourselves, but also bring infinite good luck to future generations.