RU167535U1 - DEVICE FOR DETERMINING THE THICKNESS OF THE FAT AND MUSCULAR FABRIC OF THE BULLS - Google Patents

Abstract

The utility model relates to agricultural production and can be used to measure the thickness of the layers of adipose and muscle tissue of farm animals, for example, gobies. A device for determining the thickness of the layers of adipose and muscle tissue of gobies containing an ultrasonic oscillation generator (ultrasonic vibrator) and an ultrasonic ultrasound receiver placed on the animal, additionally contains a block for setting programs, a block for setting parameters of reference samples, a visual indicator and a computing device, the first and second inputs of which are connected with the outputs of the ultrasonic ultrasound generator and the ultrasonic ultrasound receiver, the third and fourth inputs of which are connected to the blocks for setting the programs and parameters of the reference samples, and the output to the visual indicator. The device allows to increase the accuracy of measuring the thickness of the layers of adipose and muscle tissue. 1, 1 p.p.

Description

The utility model relates to agricultural production and can be used to measure the thickness of the layers of adipose and muscle tissue of farm animals, for example, gobies.

Known devices (the implementation of the method according to author certificate. No. 1388716 SU, class A01K 29/00, 1988) for determining the thickness of the layers of adipose and muscle tissue of gobies, containing an ultrasonic oscillation generator (ultrasound) and an ultrasound detector placed on the animal.

The disadvantage of such devices is the low accuracy of the measurement, due to the lack of the ability to determine the sequence of layers of adipose and muscle tissue.

The technical result of the proposed technical solution is to increase the measurement accuracy by determining the order of the layers of adipose and muscle tissue.

This technical result is achieved by the fact that the device for determining the thickness of the layers of adipose and muscle tissue of gobies containing an ultrasonic oscillation generator (ultrasound) and an ultrasound receiver located on the animal further comprises a program setting unit, a unit for setting parameters of reference samples, a visual indicator and a computing device, the first and second inputs of which are connected to the outputs of the generator of ultrasonic testing and the receiver of ultrasonic testing, the third and fourth inputs of which are connected to the blocks for setting programs and parameters of reference samples in and out - with visual indication.

The device (Fig. 1) contains an ultrasonic ultrasound generator 1 located on the animal’s body 2 (in the area of the layers of its fat and muscle tissue), a unit 3 for setting calculation programs, a computing device 4, a receiver 5 for ultrasonic testing, and a unit for specifying parameters (ultrasonic and their attenuation coefficients in the adipose and muscle tissue of gobies) reference samples and a visual indicator 7. The outputs of the ultrasonic generator 1 and the ultrasonic receiver 5 are connected to the first and second inputs of the computing device 4. The third and fourth inputs of the latter are connected respectively to block 3 anija calculation program (the thickness of the layers of adipose and muscle tissue according to the expression (1), and a reference unit 6 parameters (rates C _i UT and the coefficients α _i damping USI in adipose and muscle tissue of calves) reference samples. Such parameters C _i and α _i are determined in laboratory conditions by known ultrasonic testing methods.The results of the calculation (in a computing device 4) of the thicknesses of adipose and muscle tissue of gobies are reflected in visual indicator 7.

The accuracy of determining the speed necessary for calculating the thickness of the test layer is ensured by the fact that in soft biological tissues there is a significant correlation between the ultrasound velocity and their attenuation coefficient. Therefore, for reliable recognition of the types of layers of animal tissue during ultrasound measurements, it is necessary to use the product of speed and the attenuation coefficient (C _i ⋅ α _i ).

The device operates as follows. A device is applied to the animal’s body in the zone of monitoring the thickness of adipose and muscle tissue, which emits ultrasonic vibrations with an amplitude of U _i . The USC receiver 5 measures the voltage levels of the reflected (Fig. 2) from the boundaries a, b, f of the signals U ₁ , U ₂ , U ₃ . In the computing device 4, the processing of the corresponding signals (voltage values U _{0 of the} generator 1 of the ultrasonic testing device and the receiver 5 of the ultrasonic testing device U ₁ , U ₂ , U ₃ ). The results of calculations of the thicknesses of adipose and muscle tissues are displayed on visual indicator 7.

The device implements the following algorithm for determining the thickness of a layer of adipose or muscle tissue.

1. Computing device 4 measures t _i - the propagation time of ultrasonic testing in the studied i-th layer, and also determines the ratio B = U _i-1 / U _i , where U _{i are} the voltage amplitudes of the reflected signals.

2. Computing device 4 compares this relation B with the reference relations

G _i = U _i-1 / U _i = 2⋅C _i ⋅α _i ⋅t _i ,

where C _i , α _i are the parameters of the reference samples of the layers of adipose and muscle tissue, t _i is the obtained (in paragraph 1) value of the ultrasonic propagation time in the studied i-th layer.

3. In computing device 4, the ratio B (p. 1) is compared with the reference ratios G _i for adipose and muscle tissue, and then the value of G _i is selected that is closest to the measured value B, which allows you to determine the type of layer under study (adipose or muscle tissue) and accordingly, the propagation speed C _{i of} ultrasonic testing in this layer.

4. In the computing device 4, the thickness l _{i of the} layer of adipose or muscle tissue is calculated according to the formula (introduced into the computing device 4 by means of the block 3 for specifying calculation programs)

l _i = C _i ⋅τ _i / 2.

An example of the implementation of such an algorithm. The attenuation coefficients and ultrasonic testing speed measured on fat samples are 0.17 1 / cm and 1.43 1,410 ⁵ cm / s, and on muscle samples, respectively, 0.35 1 / cm and 1.58⋅10 cm / s . When tested on a half-carcass, a bull was obtained (for one of the tissue layers) t = 43 μs, and the ratio of stress amplitudes B = 2.7. The calculated amplitude ratios were:

For the fat layer G ₁ = 0.17⋅1.43⋅10 ⁵ ⋅43⋅10 ^-6 = 2.4;

For the muscle layer, G ₂ = 0.35⋅1.58⋅10 ^-5 ⋅43⋅10 ^-6 = 1.7.

According to p. 3, we choose G ₁ , then the desired layer thickness is determined as

l = 1.43⋅10 ⁵ ⋅43⋅10 ^-6 / 2 = 3.1 cm.

The layer thickness measured by a ruler was 3.2 cm.

The device allows to increase the accuracy of measuring the thickness of the layers of adipose and muscle tissue.

Claims (1)

A device for determining the thickness of the layers of adipose and muscle tissue of gobies, containing an ultrasonic oscillation generator (ultrasound) and an ultrasound receiver placed on the animal, characterized in that it further comprises a program setting unit, a unit for setting parameters of reference samples, a visual indicator and a computing device, the first and the second inputs of which are connected to the outputs of the generator of ultrasonic testing and the receiver of ultrasonic testing, the third and fourth inputs of which are connected to the blocks for setting programs and parameters of reference samples, and the output to visual ikatorom.