CN2781774Y

CN2781774Y - A kind of machinery for recording fish breathing-electric converter

Info

Publication number: CN2781774Y
Application number: CNU2004201505185U
Authority: CN
Inventors: 吴垠
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-27
Filing date: 2004-09-27
Publication date: 2006-05-24
Anticipated expiration: 2014-09-27

Abstract

The utility model relates to a device which can convert a sensing member to different variables. Particularly, in order to accurately record the respiratory movement and the variation of the respiratory movement of fishes in water, the utility model discloses machinery for recording the respiratory movement of the fishes, namely, an electric transducer which has the invention main point that an adjustable potentiometer and a limiting resistor of a bridge circuit formed in the way that one end of a cantilever arm of a machine/electric transducer is fixed on a supporting plate, and a strain foil stuck on the cantilever arm and the connected place of a leader line and a middle connecting line beam are sealed by insulation waterproof glue are fixed on a terminal board and are fixedly connected with a plug.

Description

The respirometric machinery of a kind of record fish---electric transducer

Technical field

The utility model relates to a kind of device that the sensing member is converted to different variablees.

Background technology

Fish are its important physical functions in respiration, the power of its breathing and the environment of water have direct relation, as the temperature of water, mesohaline increase and decrease of water and the contaminated degree of water etc. are measured fish and are changed the important indicator that can be used as environmental surveillance in respiration.In the prior art in the measuring method of respiration campaign be: use a kind of machinery---electric transducer to fish, its structure is: an end of the thin strip plate made from beryllium-bronze is fixed on the casing, the other end is unsettled to form the overarm arm, close two groups of foil gauge R of the corresponding stickup of root in its two sides ₁, R ₃And R ₂, R ₄, described foil gauge and the adjustable potentiometer R that is fixed on the terminal plate ₅With current-limiting resistance R ₆Form bridge-type electricity network, when external force acts on the cantilever end of overarm arm, make the overarm arm do the slight bending distortion, thereby the resistance variations that causes subsides foil gauge thereon makes electric bridge unbalance, with this signal input oscillograph, handle in recorder or the calculator, can measure the size of its external force.Use described machinery---when electric transducer is measured water fish class respiratory capacity, be to be to have the fish hook of cord to be hung on the fish gill with one, the other end of rope lies in the cantilever end of overarm arm, when the fish gill is breathed, the flexural deformation that fish hook and cord become the overarm arm that moves through with one Zhang Yihe, therefore, machinery with this structure---electric transducer is measured the fish respiratory movement following shortcoming: at first, because the fish gill is relatively more fragile, the active area of fish hook is again little, therefore, its respirometric power of transmitting the fish gill can not be too big; Secondly, because the transmission of fish gill respiration displacement fluctuation that campaign produces is finished by cord, and cord in water the part with the suffered resistance of motion of part is different on the water, so the distortion factor is also big, its three because fish can not maintain static in water, when fish is turned round, its cord must tilt, thereby produces horizontal component, and the transmission distortion factor of its power changes with the cord gradient.

Summary of the invention

In order to overcome the shortcoming of prior art, the utility model provides a kind of record fish respirometric machinery---electric transducer, the cantilever end of its overarm arm is acted directly on the fish gill, the displacement fluctuation that the fish gill respiration is produced directly becomes the bending motion of overarm arm, to reach the accuracy of measurement.

Solution of the present utility model can reach by following measure: the respirometric machinery of a kind of record fish---electric transducer comprises the overarm arm of being made by beryllium-bronze, foil gauge R ₁, R ₃And R ₂, R ₄The corresponding respectively overarm arm two sides that are attached to are near near its root, adjustable potentiometer R ₅With current-limiting resistance R ₆Be packed on the terminal plate, an end of the arm that it is characterized in that hanging oneself from a beam is fixed on the gripper shoe, will be affixed on strain place R on the overarm arm with insulative water-proof glue ₁R ₃And R ₂, R ₄Sealing, with the connecting portion of described foil gauge lead-out wire and connected intermediate connection bundle also with the sealing of insulative water-proof glue and be fixed on the arm of hanging oneself from a beam the other end of intermediate connection bundle and the adjustable potentiometer R on the terminal plate ₅And current-limiting resistance R ₆Link to each other, plug and terminal plate are fixed together.

The utility model compared with prior art has following advantage:

Because two groups of foil gauges that are attached on the overarm arm are insulated the marine glue sealing, the lead-out wire of all foil gauges and also be insulated the marine glue sealing with the connecting portion of intermediate connection bundle and be fixed on the overarm arm, be fixed on adjustable potentiometer on the terminal plate and current-limiting resistance simultaneously and separate by intermediate connection bundle and overarm arm with plug that terminal plate is fixed together, such structure can make the overarm arm directly immerse in the water and will be fixed on one's body the fish with the affixed gripper shoe of overarm arm roots with special fixture, the cantilever end of overarm arm is directly contacted with the fish gill, when the fish gill respiration, the motion of one Zhang Yihe also directly makes overarm brachiocylloosis distortion, pass through bridge circuit, the intermediate connection bundle, terminal plate and plug, the flexural deformation of above-mentioned overarm arm is become signal of telecommunication input oscillograph, handle in recorder or the calculator, so the utility model can accurately be measured the respiratory movement of the fish gill; Cantilever end owing to its overarm arm directly contacts with the fish gill again, also overcome in the prior art because cord transmits the distortion that the fish respiratory movement is produced, the 3rd, because the cantilever end of overarm arm directly contacts with the fish gill, so, can be as the accuracy of measuring with influence owing to cord generation horizontal component in the prior art even the scope of moving about of fish in water is big more yet.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is the vertical view of overarm arm and gripper shoe among Fig. 1;

Fig. 3 is a circuit diagram of the present utility model.

Among the figure 1 is the overarm arm, and 2 is gripper shoe, and 3 is the intermediate connection bundle, and 4 is terminal plate, and 5 is plug, R ₁R ₃For being attached to laterally side by side two foil gauges near the face of the overarm arm roots, R ₂And R ₄For being attached on overarm arm another face and R ₁R ₃Corresponding foil gauge; R ₅Be adjustable potentiometer, R ₆Be current-limiting resistance, R ₅And R ₆Be fixed on the terminal plate 4, A is a positive output, and B is that the main structure of a bridge is pressed, and C presses for negative bridge, and D is a negative output.

Embodiment

Now in conjunction with the embodiments (accompanying drawing) the utility model is described in further detail:

As shown in Figure 1, 2,2 gripper shoes of making for aluminium sheet, 1 for making the overarm arm of thin strip with beryllium-bronze, and the one end is fixed on the gripper shoe with Type of Welding, and the plane transversely posts foil gauge R side by side near the overarm arm roots ₁And R ₃, foil gauge R ₂And R ₄Be attached to its lower plane and foil gauge R ₁And R ₃The corresponding section, the lead-out wire of described foil gauge links to each other with intermediate connection bundle 3, above-mentioned be attached to overarm on the arm foil gauge and the junction of lead-out wire and intermediate connection bundle with 703 (also can with acid silicone glass cement) glue do encapsulation process; The other end of intermediate connection bundle 3 and the variable potentiometer R that is fixed on the terminal plate 4 ₅And current-limiting resistance R ₆Connect, terminal plate 4 can be connected with screw with plug 5, also can be made of one.The utility model is work like this: the gripper shoe 2 usefulness clips that will connect the arm 1 of hanging oneself from a beam are fixed on one's body the fish, the lower plane of the cantilever end of overarm arm is abutted on the fish gill, plug is connected with calculator, because overarm arm in water and be attached to foil gauge R on the upper and lower plane ₁, R ₃And R ₂, R ₄And therefore the connection line in water, can be exported through plug 5 from the signal of telecommunication that foil gauge takes out strictly according to the facts all by the sealing of 703 glue.

Claims

1. one kind is write down the respirometric machinery of fish---electric transducer, comprise the overarm arm of making by beryllium-bronze (1), foil gauge R1, R3 and R2, corresponding respectively overarm arm (1) two sides that are attached to of R4 are near near its root, adjustable potentiometer R5 and current-limiting resistance R6 are packed on the terminal plate (4), it is characterized in that: an end of overarm arm (1) is fixed on the gripper shoe (2), to be affixed on the foil gauge R1 of overarm on the arm with insulative water-proof glue, R3 and R2, the R4 sealing, also seal and be fixed on the overarm arm with insulative water-proof glue the lead-out wire of described foil gauge and the connecting portion of connected intermediate connection bundle (3), the other end of intermediate connection bundle (3) links to each other with adjustable potentiometer R5 and current-limiting resistance R6 on the terminal plate (4), and plug (5) is fixed together with terminal plate (4).