CN105783976A - Biomagnetic response device - Google Patents

Abstract

A biological magnetic response device relates to the technical field of electromagnetic biology and solves the technical problem of biological magnetic response research. The device includes an outer barrel with one upper and lower cavity, and a Helmholtz coil installed in the outer barrel; the lower cavity of the outer barrel is divided into three chambers from left to right, and the upper cavity of the outer barrel is divided into three chambers. An outer water tank, a central water tank and two inner water tanks are formed, the outer water tank is annular, and the outer water tank surrounds the central water tank and the two inner water tanks; the central water tank passes through the inner ring of the Helmholtz coil , the front and rear ends of the central water tank are respectively connected to the outer water tank, the inner water tank is an arc-shaped groove with open front and rear ends, the front and rear ends of the inner water tank are respectively connected to the outer water tank, and the two inner water tanks are respectively located on the left and right sides of the Helmholtz coil sides. The device provided by the invention is suitable for biomagnetic response experiments.

Description

biomagnetic response device

technical field

The invention relates to electromagnetic biological technology, in particular to the technology of a biological magnetic response device.

Background technique

The effects of electromagnetic radiation from wind farms on the habitat, reproduction, growth, development, spawning and migration of marine organisms have always attracted people's attention.

However, because it is difficult to study marine bioelectromagnetics through field experiments at sea, the current research on marine bioelectromagnetics is limited to the laboratory environment. The magnetic field generating device of the existing experimental device is not perfect, and the division of the experimental tank is not reasonable. In particular, there is no experimental device suitable for the experimental study of the magnetic response of marine organisms, which brings difficulties to the systematic and in-depth study of marine biological electromagnetics.

Contents of the invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a biological magnetic response device that can bring convenience to the research of marine biological electromagnetics.

In order to solve the above-mentioned technical problems, the biomagnetic response device provided by the present invention is characterized in that it includes an outer barrel and a Helmholtz coil, and the outer barrel is provided with an upper chamber and a lower chamber respectively;

The lower chamber of the outer barrel is divided into three chambers from left to right, and the three chambers are respectively the left shielding chamber, the coil accommodation chamber, the right shielding chamber, and the Helmholtz coil from left to right. The bottom end is fixed in the coil accommodation chamber, and the top end of the Helmholtz coil extends into the upper chamber of the outer barrel;

An outer water tank, a central water tank and two inner water tanks are formed in the upper chamber of the outer barrel, the outer water tank is in a ring shape, and the outer water tank surrounds the central water tank and the two inner water tanks;

The central water tank is a straight tank with open front and rear ends, and the central water tank passes through the inner ring of the Helmholtz coil, the front and rear ends of the central water tank are respectively connected to the outer water tank, and the central water tank is equipped with a Partition partition;

The inner water tank is an arc-shaped groove with open front and rear ends, the front and rear ends of the inner water tank are respectively connected to the outer water tank, and the two inner water tanks are respectively located on the left and right sides of the Helmholtz coil.

Further, a left and a right storage tubes are symmetrically fixed in the upper cavity of the outer tub, and two inner water tanks are located between the two storage tubes.

Further, the radial section of the storage tube is in the shape of a crescent with two tips facing the Helmholtz coil, the right side wall of the left storage tube constitutes the left tank wall of the left inner water tank, and the left side of the right storage tube The cylinder wall constitutes the right tank wall of the right inner water tank.

Further, it also includes a shielding barrel, the shielding barrel is an iron barrel body, and the shielding barrel is provided with an iron shielding cover that covers the mouth of the barrel, the outer barrel is placed in the shielding barrel, and the outer barrel is provided with a sealing cover. A transparent outer barrel cover that covers the mouth of the barrel, and there is a gap between the shielding cover and the outer barrel cover.

The biological magnetic response device provided by the present invention utilizes the magnetic field generated by the Helmholtz coil to have the characteristics of uniform and constant central magnetic field and uneven peripheral magnetic field, and divides the upper chamber of the outer tub into an outer water tank, a central water tank and an inner water tank, In this way, multiple cultivation areas are formed, and a highly simulated magnetic field experiment environment can be established for biological magnetic response research, which can bring convenience to marine biological electromagnetic research.

Description of drawings

Fig. 1 is a right front perspective view of a biomagnetic response device according to an embodiment of the present invention;

Fig. 2 is a front sectional view of a biomagnetic response device according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the magnetic field distribution of the Helmholtz coil.

detailed description

The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention. All similar structures and similar changes of the present invention should be included in the scope of protection of the present invention. The commas in all indicate the relationship between and.

As shown in Fig. 1-Fig. 2, a biomagnetic response device provided by the embodiment of the present invention is characterized in that it includes an outer barrel 2 and a Helmholtz coil 1, and the outer barrel 2 is provided with an upper and lower container respectively. Cavity;

The lower chamber of the outer barrel 2 is divided into three chambers from left to right, and the three chambers are respectively a left shielding chamber 51, a coil accommodating chamber 52, a right shielding chamber 53, and a Helm chamber from left to right. The bottom end of the Holtz coil 1 is fixed in the coil accommodating cavity 52, and the top end of the Helmholtz coil 1 extends into the upper cavity of the outer barrel;

An outer water tank 43, a central water tank 41, and two inner water tanks 42 are formed in the upper chamber of the outer tub 2, the outer water tank 43 is ring-shaped, and the outer water tank 43 surrounds the central water tank 41 and the two inner water tanks 42;

The central water tank 41 is a straight tank with open front and rear ends, and the central water tank 41 passes through the inner ring of the Helmholtz coil 1, and the front and rear ends of the central water tank 1 are respectively connected to the outer water tank 43, and the central water tank is equipped with a Partition partitions (not shown) that close its front and rear ends;

The inner water tank 42 is an arc-shaped groove with open front and rear ends, and the front and rear ends of the inner water tank 42 are respectively connected to the outer water tank 43 , and the two inner water tanks 42 are respectively located on the left and right sides of the Helmholtz coil 1 .

In the embodiment of the present invention, a left and right storage tube 3 is symmetrically fixed in the upper cavity of the outer barrel, and two inner water tanks 42 are located between the two storage tubes 3. The radial section of the storage tube 3 It is crescent-shaped with two tips facing the Helmholtz coil 1, the right wall of the left storage tube 3 forms the left tank wall of the left inner water tank 42, and the left side wall of the right storage tube 3 forms the right inner water tank 42. Right trough wall.

The embodiment of the present invention also includes a shielding barrel, the shielding barrel is an iron barrel body, the shielding barrel is provided with an iron shielding cover that covers its mouth, the outer barrel 2 is placed in the shielding barrel, and the outer barrel 2 There is a transparent outer barrel cover that covers the mouth of the barrel, and there is a gap between the shielding cover and the outer barrel cover. This gap can be used to install cameras and other equipment to monitor the experimental process. The role of the shielding cover and the shielding barrel is to jointly form a A closed magnetic field circuit can more effectively shield the magnetic field to protect external experimenters from the influence of magnetic field radiation. The function of the outer barrel cover is to facilitate the staff to observe the condition in the inner cavity of the outer barrel with the naked eye after removing the shielding cover.

In the embodiment of the present invention, the Helmholtz coil is made of an acrylic plate with a thickness of 12 mm, its inner diameter is 850 mm ± 5 mm, its outer diameter is 975 mm ± 5 mm, and its effective radius (in the Biot-Savart law formula Radius) is 450mm; each coil is wound with 1.5mm insulated enameled wire for 400 turns, and every 200 turns has a tap; the total resistance of the two coils is about 24 ohms, and when the magnetic induction is 3.5mT, the voltage value is about 120V; The characteristic of the Helmholtz coil is that it can generate a wide uniform magnetic field area near the midpoint of its common axis. area and is suitable for manufacturing one-dimensional, two-dimensional and three-dimensional space combined magnetic fields and other characteristics.

The embodiment of the present invention is suitable for biomagnetic response experiments. As shown in Figure 3, the magnetic field generated by the Helmholtz coil has the characteristics of a uniform and constant central magnetic field and an inhomogeneous peripheral magnetic field; Cultivate organisms in the central tank of the area, use the central tank to study the response of a constant electromagnetic field to biological physiological behavior, or cultivate organisms in the inner tank and outer tank located in the outer magnetic field area of the Helmholtz coil, and use the inner tank and outer tank to study Biological selectivity to magnetic field strength.

During biomagnetic response experiments, seawater can be injected into the left shielding chamber and right shielding chamber of the lower chamber of the outer barrel for magnetic field shielding, and fresh water or seawater for experiments can be injected into the central tank, inner tank, and outer tank. The amount of water injected depends on the actual situation. The experimental requirements are determined; if the overall magnetic field space is used to conduct experiments such as the spatial distribution of fish schools, the central water tank, inner water tank, and outer water tank can be used at the same time. After the front and rear ends of the central water tank are closed with partition partitions, the central water tank can be used alone Bioresponse experiments under magnetic fields.

Claims (4)

1. A biomagnetic response device, characterized in that: it comprises an outer barrel and a Helmholtz coil, and the outer barrel is provided with an upper and lower chamber; The lower chamber of the outer barrel is divided into three chambers from left to right, and the three chambers are respectively the left shielding chamber, the coil accommodation chamber, the right shielding chamber, and the Helmholtz coil from left to right. The bottom end is fixed in the coil accommodating cavity, and the top end of the Helmholtz coil extends into the upper cavity of the outer barrel; An outer water tank, a central water tank and two inner water tanks are formed in the upper chamber of the outer barrel, the outer water tank is in a ring shape, and the outer water tank surrounds the central water tank and the two inner water tanks; The central water tank is a straight tank with open front and rear ends, and the central water tank passes through the inner ring of the Helmholtz coil, the front and rear ends of the central water tank are respectively connected to the outer water tank, and the central water tank is equipped with a Partition partition; The inner water tank is an arc-shaped groove with open front and rear ends, the front and rear ends of the inner water tank are respectively connected to the outer water tank, and the two inner water tanks are respectively located on the left and right sides of the Helmholtz coil. 2. The biomagnetic response device according to claim 1, characterized in that: the upper chamber of the outer bucket is symmetrically fixed with a left and right storage cylinder, and two inner water tanks are located between the two storage cylinders . 3. The biomagnetic response device according to claim 2, characterized in that: the radial section of the storage tube is in the shape of a crescent with two tips facing the Helmholtz coil, and the right side wall of the left storage tube constitutes The left tank wall of the left inner water tank and the left side wall of the right storage tube form the right tank wall of the right inner water tank. 4. The biomagnetic response device according to claim 1, characterized in that: it also includes a shielding barrel, the shielding barrel is an iron barrel body, and the shielding barrel is provided with an iron shielding cover that seals the mouth of the barrel , the outer barrel is placed in the shielding barrel, and the outer barrel is provided with a transparent outer barrel cover that covers the mouth of the barrel, and there is a gap between the shielding cover and the outer barrel cover.