CN106770647B - Fat content measuring system and method - Google Patents

Abstract

The present invention provides a fat content measurement system and method. The fat content measuring system includes: an ultrasonic measuring instrument and a user terminal. The ultrasonic measuring instrument includes a control device, an ultrasonic probe and a processing device, and the user terminal includes a synthesis module and a calculation module. When using the fat content measurement system for measurement, at least two ultrasonic echoes obtained after ultrasonic transmission, reception and processing are respectively performed on the same measured object using at least two levels of emission voltages to synthesize to obtain a synthesized ultrasonic echo, Calculate the fat thickness and fat content of the measured object according to the synthesized ultrasonic echoes. The fat content measurement system and method improve the signal-to-noise ratio of the far-field signal and make the near-field signal unsaturated without increasing the circuit and saving the cost, thereby improving the measurement accuracy.

Description

Fat content measurement system and method

technical field

The invention relates to the technical field of ultrasonic applications, and in particular, to a fat content measurement system and method.

Background technique

In traditional ultrasonic measuring instruments, in order to compensate the attenuation of ultrasonic echo signals caused by the increase of depth, a time gain compensation (TGC) circuit is generally used to amplify the echo signals. This circuit is complex and expensive, and is not suitable for fat content. In low-cost, small ultrasonic instruments such as measuring instruments. Another method uses a fixed gain, and uses a digital gain method for gain compensation in the back-end digital processing. Although this method saves the time gain compensation (TGC) circuit and reduces the cost, it will bring corresponding problems. When the ultrasonic energy is transmitted in the human body, it will attenuate with the depth. The attenuation coefficient is generally 0.81dB/cm*MHz. If the ultrasonic transmission frequency is 2.5MHz, the ultrasonic energy will be attenuated by half every 1.5cm depth, that is, the ultrasonic echo signal. The energy decreases by 3dB every 1.5cm. In order to obtain a higher signal-to-noise ratio of the far-field signal, it is necessary to increase the emission voltage, but the increase of the emission voltage will inevitably lead to the saturation of the near-field signal when the gain is fixed.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a fat content measurement system and method to solve the above problems.

To achieve the above object, the present invention provides the following technical solutions:

A fat content measurement system includes: an ultrasonic measuring instrument and a user terminal, the ultrasonic measuring instrument includes a control device, an ultrasonic probe and a processing device, and the user terminal includes a synthesis module and a calculation module;

The control device is used to generate a transmission voltage and a transmission waveform, and control the ultrasonic probe to emit ultrasonic waves under the transmission voltage and the transmission waveform, wherein the control device can generate at least two levels of transmission voltage;

The ultrasonic probe is used to transmit ultrasonic waves to the measured object under the control of the control device, receive ultrasonic echoes of the transmitted ultrasonic waves, and send the received ultrasonic echoes to the processing device;

The processing device is configured to receive ultrasonic echoes sent by the ultrasonic probe, process the ultrasonic echoes, obtain processed ultrasonic echoes, and send the processed ultrasonic echoes to the user The synthesis module of the terminal;

The synthesis module is used for receiving and storing the processed ultrasonic echoes sent by the processing device, and at least two ultrasonic waves obtained after ultrasonic transmission, reception and processing are respectively performed on the same measured object using at least two levels of emission voltages. The echoes are synthesized to obtain a synthesized ultrasonic echo, and the synthesis includes performing depth segmentation on each obtained ultrasonic echo to obtain a segmented ultrasonic echo, and each level of emission voltage corresponds to a segment of ultrasonic echoes. At least two sections of ultrasonic echoes corresponding to at least two levels of emission voltages constitute the synthesized ultrasonic echoes;

The calculation module is used for calculating the fat thickness and fat content of the measured object according to the synthesized ultrasonic echo.

Further, the user terminal further includes a storage module for storing the calculation results of the fat thickness and fat content calculated by the calculation module.

Further, the fat content measurement system also includes a server;

The computing module is further configured to send user registration information and the calculation results of the fat thickness and fat content to the server;

The server is configured to receive and store the user registration information and the calculation results of fat thickness and fat content sent by the computing module, and to share data with external devices.

Further, the control device includes: a main controller, an emission voltage controller and an emission control circuit, the main controller is electrically connected to the emission voltage controller and the emission control circuit respectively, and the emission voltage control The device is electrically connected with the emission control circuit;

the main controller, for generating and sending digital signals to the transmit voltage controller, and generating and sending transmit waveforms to the transmit control circuit;

The transmit voltage controller includes a digital-to-analog converter, an amplifier and an emitter-level follower, the digital-to-analog converter is used to receive a digital signal generated by the main controller and convert the digital signal into a transmit voltage, the The amplifier is used for amplifying the emission voltage, and the emitter follower is used for power amplifying the amplified emission voltage, and sending the power amplified emission voltage to the emission control circuit;

The transmission control circuit is used to receive the transmission waveform generated by the main controller and the transmission voltage generated by the transmission voltage controller, and generate and send the excitation signal that enables the ultrasonic probe to transmit ultrasonic waves to the ultrasonic probe .

Further, the processing device includes: a high-pass filter, an amplifier circuit, an envelope detection circuit and an analog-to-digital converter;

The high-pass filter is used to filter out low-frequency interference signals in the ultrasonic echoes received by the ultrasonic probe, obtain filtered ultrasonic echoes, and send the filtered ultrasonic echoes to the amplifying circuit;

The amplifying circuit is configured to receive the filtered ultrasonic echo sent by the high-pass filter, amplify the filtered ultrasonic echo to obtain the amplified ultrasonic echo, and convert the amplified ultrasonic echo sent to the envelope detection circuit;

The envelope detection circuit is used for receiving the amplified ultrasonic echo sent by the amplifying circuit, performing envelope detection processing on the amplified ultrasonic echo to obtain the ultrasonic echo envelope signal, and converting the amplified ultrasonic echo into the envelope signal. sending an ultrasonic echo envelope signal to the analog-to-digital converter;

The analog-to-digital converter is used for receiving the ultrasonic echo envelope signal sent by the envelope detection circuit, and converting the ultrasonic echo envelope signal into an ultrasonic echo digital signal.

A fat content measurement system includes: a control device, an ultrasonic probe, a processing device, a synthesis module and a calculation module;

The control device is used to generate a transmission voltage and a transmission waveform, and control the ultrasonic probe to emit ultrasonic waves under the transmission voltage and the transmission waveform, wherein the control device can generate at least two levels of transmission voltage;

The ultrasonic probe is used to transmit ultrasonic waves to the measured object under the control of the control device, receive ultrasonic echoes of the transmitted ultrasonic waves, and send the received ultrasonic echoes to the processing device;

The processing device is configured to receive ultrasonic echoes sent by the ultrasonic probe, process the ultrasonic echoes, obtain processed ultrasonic echoes, and send the processed ultrasonic echoes to the synthesiser module;

The synthesis module is used for receiving and storing the processed ultrasonic echoes sent by the processing device, and at least two ultrasonic echoes obtained after ultrasonic transmission, reception and processing are respectively performed on the same measured object using at least two levels of emission voltages. Perform synthesis to obtain a synthesized ultrasonic echo, and the synthesis includes performing depth segmentation on each obtained ultrasonic echo to obtain a segmented ultrasonic echo, and each level of emission voltage corresponds to a segment of ultrasonic echoes, and the at least two ultrasonic echoes are respectively corresponding. at least two ultrasonic echoes corresponding to the level emission voltages constitute the synthesized ultrasonic echoes;

a calculation module for calculating the fat thickness and fat content of the measured object according to the synthesized ultrasonic echo;

The display device is used to display the calculation result of the fat thickness and fat content of the measured object.

Further, the fat content measurement system further includes a storage module, and the storage module is configured to store the calculation results of the fat thickness and the fat content of the measured object calculated by the calculation module.

Further, the fat content measurement system further includes a communication device for communicating with an external device.

A method for measuring fat content, the method comprising:

Use at least two levels of emission voltage to transmit ultrasonic waves to the measured object respectively;

respectively receiving ultrasonic echoes of the ultrasonic waves;

respectively processing the ultrasonic echoes to obtain processed ultrasonic echoes;

At least two ultrasonic echoes obtained after ultrasonic transmission, reception and processing are respectively performed on the same measured object using at least two levels of emission voltages are synthesized to obtain a synthesized ultrasonic echo, and the synthesis includes synthesizing each obtained ultrasonic echo. The ultrasonic wave is deeply segmented to obtain segmented ultrasonic echoes, each level of transmission voltage corresponds to a segment of ultrasonic echoes, and at least two segments of ultrasonic echoes corresponding to the at least two levels of transmission voltages constitute the synthesized ultrasonic echoes ;

Calculate the fat thickness and fat content of the subject based on the synthesized ultrasonic echoes.

Further, the step of calculating the fat thickness and fat content of the measured object according to the synthesized ultrasonic echo includes:

Obtain the first derivative of the ultrasonic echo signal exceeding the threshold to obtain the sampling time of each interface;

Calculate the fat thickness of the measured object according to the sampling time;

The fat content of the tested object is obtained according to the fat thickness.

The fat content measurement system and method provided by the invention improves the signal-to-noise ratio of the far-field signal and makes the near-field signal unsaturated without increasing the circuit and saving the cost, thereby improving the measurement accuracy.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. Other related figures are obtained from these figures.

FIG. 1 is a schematic structural diagram of a fat content measurement system provided by an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of a control device provided by an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a processing apparatus provided by an embodiment of the present invention.

FIG. 4 is another schematic structural diagram of a user terminal according to an embodiment of the present invention.

FIG. 5 is another schematic structural diagram of a fat content measurement system provided by an embodiment of the present invention.

FIG. 6 is a schematic diagram of measurement performed by an ultrasonic measuring instrument provided in an embodiment of the present invention.

7-a is a schematic diagram of a processed ultrasonic echo obtained by using a first-stage emission voltage according to an embodiment of the present invention.

FIG. 7-b is a schematic diagram of a processed ultrasonic echo obtained by using a second-stage emission voltage according to an embodiment of the present invention.

FIG. 7-c is a schematic diagram of a processed ultrasonic echo obtained by using a third-stage emission voltage according to an embodiment of the present invention.

FIG. 7-d is a schematic diagram of an ultrasonic echo synthesized by a synthesis module according to an embodiment of the present invention.

FIG. 8 is a schematic diagram of performing threshold processing on synthesized ultrasonic echoes according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of obtaining a first-order derivative of a signal segment in an ultrasonic echo that exceeds a threshold according to an embodiment of the present invention.

FIG. 10 is another schematic structural diagram of a fat content measurement system provided by an embodiment of the present invention.

FIG. 11 is another schematic structural diagram of a fat content measurement system provided by an embodiment of the present invention.

FIG. 12 is a flowchart of a method for measuring fat content according to an embodiment of the present invention.

FIG. 13 is a flowchart of step S105 in the fat content measurement method provided by the embodiment of the present invention.

Icons: 1-fat content measurement system; 10-ultrasonic measuring instrument; 11-control device; 12-ultrasonic probe; 13-processing device; 50-user terminal; 51-synthesis module; 52-calculation module; 111-main controller ; 112-transmitting voltage controller; 113-transmitting control circuit; 1121-digital-to-analog converter; 1122-amplifier; 1123-emitter-level follower; 131-high-pass filter; 132-amplifying circuit; 133-envelope detection circuit; 134-analog-to-digital converter; 53-storage module; 90-server; 54-display device; 55-communication device; 3-skin; 5-fat layer; 7-superficial fascia layer; 9-deep fascia layer.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. In the description of the present invention, the terms "first", "second", "third", "fourth", etc. are only used to distinguish the description, and should not be construed as merely or imply relative importance.

Referring to FIG. 1 , the present invention provides a fat content measurement system 1 , including: an ultrasonic measuring instrument 10 and a user terminal 50 . The ultrasonic measuring instrument 10 includes a control device 11 , an ultrasonic probe 12 and a processing device 13 , and the user terminal 50 includes a synthesis module 51 and a calculation module 52 .

The control device 11 is used to generate a transmission voltage and a transmission waveform, and control the ultrasonic probe 12 to transmit ultrasonic waves under the transmission voltage and the transmission waveform. Wherein, the control device 11 can generate at least two levels of emission voltages. Optionally, in this embodiment, the control device 11 can generate three levels of emission voltages, which are 1V, 2V and 4V respectively. It should be understood that the number of voltage levels and voltage values used may be different depending on the fat thickness of the measured object. Therefore, the number of voltage levels and voltage values generated by the control device 11 should be set according to the actual situation, which is not limited here. .

Referring to FIG. 2 , optionally, in this embodiment, the control device 11 includes: a main controller 111 , a transmission voltage controller 112 and a transmission control circuit 113 . The main controller 111 is electrically connected to the emission voltage controller 112 and the emission control circuit 113 respectively, and the emission voltage controller 112 is electrically connected to the emission control circuit 113 . The main controller 111 is used for generating and sending digital signals to the transmit voltage controller 112 , and generating and sending transmit waveforms to the transmit control circuit 113 . Optionally, the main controller 111 may use a processor such as an FPGA, a DSP, a single-chip microcomputer, or an ARM. The transmit voltage controller 112 includes a digital-to-analog converter 1121 , an amplifier 1122 and an emitter follower 1123 . The digital-to-analog converter 1121 is used to receive the digital signal generated by the main controller 111 and convert the digital signal into a transmission voltage, the amplifier 1122 is used to amplify the transmission voltage, and the emitter follower 1123 is used to amplify the transmission voltage. The resulting transmit voltage is subjected to power amplification, and the power-amplified transmit voltage is sent to the transmit control circuit 113 . The transmission control circuit 113 is used to receive the transmission waveform generated by the main controller 111 and the transmission voltage generated by the transmission voltage controller 112 , and to generate and transmit the excitation signal that enables the ultrasonic probe 12 to transmit ultrasonic waves to the ultrasonic probe 12 .

The ultrasonic probe 12 is used to transmit ultrasonic waves to the measured object under the control of the control device 11 , receive ultrasonic echoes of the transmitted ultrasonic waves, and send the received ultrasonic echoes to the processing device 13 .

The processing device 13 is configured to receive the ultrasonic echo sent by the ultrasonic probe 12, process the ultrasonic echo, obtain the processed ultrasonic echo, and send the processed ultrasonic echo to the user The synthesis module 51 of the terminal 50 .

Referring to FIG. 3 , optionally, in this embodiment, the processing device 13 includes: a high-pass filter 131 , an amplification circuit 132 , an envelope detection circuit 133 and an analog-to-digital converter 134 . The high-pass filter 131 is used to filter out low-frequency interference signals in the ultrasonic echoes received by the ultrasonic probe 12 to obtain filtered ultrasonic echoes, and send the filtered ultrasonic echoes to the amplifying circuit 132 . The amplifying circuit 132 is used to receive the filtered ultrasonic echo sent by the high-pass filter 131, amplify the filtered ultrasonic echo to obtain the amplified ultrasonic echo, and convert the amplified ultrasonic echo into the amplified ultrasonic echo. The echoes are sent to the envelope detection circuit 133 . The envelope detection circuit 133 is used to receive the amplified ultrasonic echo sent by the amplifying circuit 132, perform envelope detection processing on the amplified ultrasonic echo, obtain the ultrasonic echo envelope signal, and then The ultrasonic echo envelope signal is sent to the analog-to-digital converter 134 . The analog-to-digital converter 134 is configured to receive the ultrasonic echo envelope signal sent by the envelope detection circuit 133 and convert the ultrasonic echo envelope signal into a digital ultrasonic echo signal.

The processing device 13 and the user terminal 50 have built-in data interfaces, Bluetooth modules, WiFi modules, etc. for communicating with external devices. The user terminal 50 may be an electronic device such as a smart phone, a tablet computer, and a computer.

The synthesis module 51 is used for receiving and storing the processed ultrasonic echoes sent by the processing device 13, and at least two ultrasonic waves obtained after ultrasonic transmission, reception and processing are respectively performed on the same measured object using at least two levels of emission voltages. The echoes are synthesized to obtain a synthesized ultrasonic echo, and the synthesis includes performing depth segmentation on each obtained ultrasonic echo to obtain a segmented ultrasonic echo, and each level of emission voltage corresponds to a segment of ultrasonic echoes. At least two sections of ultrasonic echoes corresponding to at least two levels of emission voltages constitute the synthesized ultrasonic echoes.

The calculation module 52 is configured to calculate the fat thickness and fat content of the measured object according to the synthesized ultrasonic echoes.

Referring to FIG. 4 , optionally, in this embodiment, the user terminal 50 further includes a storage module 53 for storing the calculation results of the fat thickness and fat content calculated by the calculation module 52 .

Referring to FIG. 5 , optionally, in this embodiment, the fat content measurement system 1 further includes a server 90 . The calculation module 52 is further configured to send the user registration information and the calculation results of the fat thickness and fat content to the server 90 . The server 90 is configured to receive and store the user registration information and the calculation results of fat thickness and fat content sent by the calculation module 52, and to share data with external devices.

Referring to FIG. 6 , when the fat content measurement system 1 provided by the present invention is used to measure the fat thickness and fat content of a certain part of the human body, optionally, the control device 11 can generate three-level emission voltages, and each part is measured three times. For the first measurement, the ultrasonic probe 12 of the ultrasonic measuring instrument 10 is placed close to the skin 3 . Generally, there is a coupling agent between the ultrasonic probe 12 and the skin 3 . The ultrasonic probe 12 generates ultrasonic waves under the control of the first-level emission voltage generated by the control device 11. When the ultrasonic waves pass through the interface between the skin 3, the fat layer 5, the superficial fascia layer 7 and the deep fascia layer 9, they are reflected to form ultrasonic echoes. The wave is received by the ultrasonic probe 12, and the ultrasonic probe 12 sends the received ultrasonic echo to the processing device 13 after filtering, amplification, envelope detection and analog-to-digital conversion, etc. The synthesis module 51 of the user terminal 50 . The steps of the second measurement and the third measurement are the same as the steps of the first measurement, the difference is that the ultrasonic probe generates ultrasonic waves under the control of the second-level emission voltage and the third-level emission voltage generated by the control device 11 respectively. of.

After the three measurements are completed, the synthesis module 51 receives three processed ultrasonic echoes, as shown in Fig. 7-a, Fig. 7-b and Fig. 7-c. A represents the first segment of the segmented ultrasonic echo obtained with the first-level emission voltage, B represents the second segment of the segmented ultrasonic echo obtained with the second-level emission voltage, and C represents the third-level ultrasonic echo The third segment of the segmented ultrasound echo obtained by transmitting the voltage. Fig. 7-d is a schematic diagram of the synthesized ultrasonic echo. As shown in Fig. 7-d, the first segment of the synthesized ultrasonic echo is the first segment of the segmented ultrasonic echo obtained by using the first-level emission voltage, and the second segment is the second-level transmission The second segment of the segmented ultrasonic echo obtained by the voltage, and the third segment is the third segment of the segmented ultrasonic echo obtained by using the third-level emission voltage.

The synthesized ultrasonic echoes are sent to the calculation module 52 to calculate the fat thickness and fat content of the measured object.

Firstly, threshold processing is performed on the synthesized ultrasonic echo, that is, the signal higher than the threshold is taken as 1, and the signal below the threshold is taken as 0, as shown in FIG. 8 .

The choice of threshold depends on fat thickness and existing experience. Then, the first-order derivative is obtained for the signal segment in the ultrasonic echo that exceeds the threshold. If the first-order derivative of a signal point is greater than a positive threshold, and the first-order derivative of the next signal point is less than a negative threshold, the signal point is marked as An interface signal point T(n), as shown in Figure 9.

Next, calculate the thickness of each layer, the calculation formula is: H(n)=T(n)×V/2

Among them, V is the propagation speed of ultrasonic waves in the human body. Since the invention is mainly to calculate the thickness of fat, the sound speed should be the propagation speed of ultrasonic waves in the fat layer 5, so the value of V is 1450m/s. T(n) is the difference between the time when the ultrasonic echoes generated by each interface are received and the time when the ultrasonic echoes generated by the interface between the skin 3 and the fat layer 5 are received. H(n) is the thickness of the skin 3 to each interface. Generally, when calculating the thickness of the fat layer 5, the thickness of the skin layer 3 can be ignored, so the thickness of the fat layer 5 can be directly calculated by the time when the ultrasonic echo generated by the interface between the fat layer 5 and the deep fascia layer 9 is received. calculate.

Finally, fat content is calculated based on fat thickness. On the operation interface, the user terminal 50 instructs the operator to complete the thickness detection of the fat layer 5 in the left and right rear waist, the inner measurement of the left and right thighs, etc., and input gender, weight and waist size as required, and estimate the body fat content (percentage) accordingly, The specific estimation formula is:

Female: BF%=(0.183×BW+0.251×UVW+0.126×UMB+0.169×THI-20.7)/BW×100%

Male: BF%=(-0.237×BW+0.482×UVW+0.195×UMB+0.209×THI-18.9)/BW×100%

Among them, BW is body weight (unit, kg), UVW is waist circumference (unit, mm), UMB is the average measured left and right back waist fat thickness (unit, mm), THI is the measured left and right inner thigh fat thickness average (unit, mm).

The user terminal 50 records the measured body fat content through the storage module. After completing multiple measurements, the user terminal 50 may also draw a change curve and trend of the body fat content. The user terminal 50 can also share data with exercise fitness recording software, such as Keep, apple, etc., through the server 90, and objectively record the results of exercise such as fitness and weight loss. The user terminal 50 can also make suggestions by analyzing the fat thickness of each part, the body fat content and the shared fitness data.

Please refer to FIG. 10 , the present invention also provides a fat content measurement system 1 , which is substantially the same as the fat content measurement system 1 shown in FIG. 1 , except that in the fat content measurement system 1 shown in FIG. 10 , the synthesis module 51 and the calculation module 52 are integrated with the control device 11, the ultrasonic probe 12 and the processing device 13, and a display device 54 is added to display the calculation results of the fat thickness and fat content of the measured object.

Referring to FIG. 11 , optionally, in this embodiment, the fat content measurement system 1 may further include a storage module 53 for storing the calculation results of the fat thickness and fat content of the measured object calculated by the calculation module 52 and a communication device 55 for communicating with external devices.

Referring to FIG. 12 , an embodiment of the present invention further provides a method for measuring fat content, the method includes: step S101 , step S102 , step S103 , step S104 and step S105 .

Step S101, using at least two levels of transmitting voltages to transmit ultrasonic waves to the measured object respectively;

Step S102, respectively receiving ultrasonic echoes of the ultrasonic waves;

Step S103, respectively processing the ultrasonic echoes to obtain processed ultrasonic echoes;

Step S104, synthesizing at least two ultrasonic echoes obtained after ultrasonic transmission, reception and processing are carried out respectively on the same measured object using at least two levels of emission voltages to obtain a synthesized ultrasonic echo, and the synthesizing includes synthesizing each of the obtained ultrasonic echoes. Each ultrasonic echo is deeply segmented to obtain segmented ultrasonic echoes, each level of transmission voltage corresponds to a segment of ultrasonic echoes, and at least two segments of ultrasonic echoes corresponding to the at least two levels of transmission voltages constitute the combined ultrasonic echo. ultrasonic echo;

Step S105: Calculate the fat thickness and fat content of the measured object according to the synthesized ultrasonic echo.

Referring to FIG. 13, optionally, in this embodiment, step S105 includes: sub-step S1051, sub-step S1052 and sub-step S1053.

Sub-step S1051, obtaining the first derivative of the ultrasonic echo signal exceeding the threshold to obtain the sampling time of each interface;

Sub-step S1052, calculate and obtain the fat thickness of the measured object according to the sampling time;

In sub-step S1053, the fat content of the measured object is obtained according to the fat thickness.

The fat content measurement system 1 and the method provided by the present invention improve the signal-to-noise ratio of the far-field signal and make the near-field signal unsaturated without increasing the circuit and saving the cost, thereby improving the measurement accuracy.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the description of the present invention, it should also be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, or are The orientation or positional relationship that the product of the invention is usually placed in use is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a kind of fat content measuring system, including ultrasonic meter, which is characterized in that further include: user terminal, the ultrasound Measuring instrument includes control device, ultrasonic probe and processing unit, and the user terminal includes synthesis module and computing module；

The control device for generating emitting voltage and transmitted waveform, and controls the ultrasonic probe in the emitting voltage With emit ultrasonic wave under transmitted waveform, wherein the control device can generate at least two-stage emitting voltage；

The ultrasonic probe receives it and is emitted for emitting ultrasonic wave to measurand under the control of the control device The ultrasonic echo of ultrasonic wave, and the ultrasonic echo received is sent to the processing unit；

The processing unit, the ultrasonic echo sent for receiving the ultrasonic probe, and the ultrasonic echo is handled, The ultrasonic echo that obtains that treated, and treated that ultrasound returns is sent to the synthesis module of the user terminal by described；

The synthesis module will be to same quilt for receiving and storing the processing unit ultrasonic echo that sends that treated Object is surveyed to return using at least two ultrasounds that at least two-stage emitting voltage carries out obtaining after ultrasonic wave transmitting, reception and processing respectively Wave synthesized after ultrasonic echo, the synthesis includes carrying out depth to each ultrasonic echo of acquisition to be segmented Ultrasonic echo after to segmentation, every grade of emitting voltage respectively correspond one section of ultrasonic echo, and at least two-stage emitting voltage institute is right At least two sections of ultrasonic echos answered constitute the ultrasonic echo after the synthesis；The computing module, after according to the synthesis Ultrasonic echo calculate measurand fat thickness and fat content.

2. fat content measuring system according to claim 1, which is characterized in that the user terminal further includes storage mould Block, for storing the calculated result of the fat thickness that the computing module calculates and fat content.

3. fat content measuring system according to claim 1, which is characterized in that the fat content measuring system is also wrapped Include server；

The computing module is also used to send the calculated result of user's registration information and the fat thickness and fat content to institute State server；

The server contains for receiving and storing user's registration information and fat thickness that the computing module is sent and fat The calculated result of amount carries out data sharing with external equipment.

4. fat content measuring system according to claim 1, which is characterized in that the control device includes: main control Device, emitting voltage controller and countdown circuit, the master controller and the emitting voltage controller and the transmitting are controlled Circuit processed is electrically connected, and the emitting voltage controller and the countdown circuit are electrically connected；

The master controller, for generating and sending digital signal, and generation and Xiang Suoshu to the emitting voltage controller Countdown circuit sends transmitted waveform；

The emitting voltage controller, including digital analog converter, amplifier and a grade follower is penetrated, the digital analog converter is for connecing It receives the digital signal that the master controller generates and converts emitting voltage for the digital signal, the amplifier is used for institute It states emitting voltage to amplify, grade follower of penetrating is for carrying out power amplification to amplified emitting voltage, and by power Amplified emitting voltage is sent to the countdown circuit；

The countdown circuit, for receiving the transmitted waveform and emitting voltage controller production that the master controller generates Raw emitting voltage, and generating and sending can make the pumping signal of the ultrasonic probe transmitting ultrasonic wave to the ultrasonic probe.

5. fat content measuring system according to claim 1, which is characterized in that the processing unit includes: high pass filter Wave device, amplifying circuit, envelope detection circuit and analog-digital converter；The high-pass filter connects for filtering out the ultrasonic probe The low-frequency interference signal in ultrasonic echo received obtains filtered ultrasonic echo, and filtered ultrasonic echo is sent To the amplifying circuit；

The amplifying circuit, the filtered ultrasonic echo sent for receiving the high-pass filter, to described filtered Ultrasonic echo amplifies, and obtains amplified ultrasonic echo, and amplified ultrasonic echo is sent to the envelope detection Circuit；

The envelope detection circuit, the amplified ultrasonic echo sent for receiving the amplifying circuit, after the amplification Ultrasonic echo carry out envelope detection processing, obtain ultrasonic echo envelope signal, and the ultrasonic echo envelope signal is sent To the analog-digital converter；

Analog-digital converter, the ultrasonic echo envelope signal sent for receiving the envelope detection circuit, and the ultrasound is returned Wave envelope signal is converted to ultrasonic echo digital signal.

6. a kind of fat content measuring system, including control device, ultrasonic probe, processing unit, which is characterized in that further include: Synthesis module and computing module；

The control device for generating emitting voltage and transmitted waveform, and controls the ultrasonic probe in the emitting voltage With emit ultrasonic wave under transmitted waveform, wherein the control device can generate at least two-stage emitting voltage；

The ultrasonic probe receives it and is emitted for emitting ultrasonic wave to measurand under the control of the control device The ultrasonic echo of ultrasonic wave, and the ultrasonic echo received is sent to the processing unit；

The processing unit, the ultrasonic echo sent for receiving the ultrasonic probe, and the ultrasonic echo is handled, The ultrasonic echo that obtains that treated, and treated that ultrasound returns is sent to the synthesis module by described；

Synthesis module will be to same tested pair for receiving and storing the processing unit ultrasonic echo that sends that treated As using at least two-stage emitting voltage carry out respectively at least two ultrasonic echos obtained after ultrasonic wave transmitting, reception and processing into Row synthesize after ultrasonic echo, described synthesize includes being segmented to each ultrasonic echo of acquisition progress depth point Ultrasonic echo after section, every grade of emitting voltage respectively correspond one section of ultrasonic echo, corresponding at least two-stage emitting voltage At least two sections of ultrasonic echos constitute the ultrasonic echo after the synthesis；

Computing module, for calculating the fat thickness and fat content of measurand according to the ultrasonic echo after the synthesis；

Display device, for showing the fat thickness and fat content calculated result of measurand.

7. fat content measuring system according to claim 6, which is characterized in that the fat content measuring system is also wrapped Memory module is included, the memory module is used to store the fat thickness and fat content for the measurand that the computing module calculates Calculated result.

8. fat content measuring system according to claim 7, which is characterized in that the fat content measuring system is also wrapped Include the communication device communicated with external equipment.

9. a kind of fat content measurement method, which is characterized in that the described method includes:

Ultrasonic wave is emitted to measurand respectively using at least two-stage emitting voltage；

The ultrasonic echo of the ultrasonic wave is received respectively；

The ultrasonic echo is handled respectively, the ultrasonic echo that obtains that treated；

By carry out obtaining after ultrasonic wave transmitting, reception and processing respectively using at least two-stage emitting voltage to same measurand At least two ultrasonic echos synthesized after ultrasonic echo, the synthesis includes each ultrasonic echo to acquisition The ultrasonic echo after depth is segmented is carried out, every grade of emitting voltage respectively corresponds one section of ultrasonic echo, and described at least two At least two sections of ultrasonic echos corresponding to grade emitting voltage constitute the ultrasonic echo after the synthesis；

The fat thickness and fat content of measurand are calculated according to the ultrasonic echo after synthesis.

10. fat content measurement method according to claim 9, which is characterized in that the ultrasound according to after synthesis is returned The fat thickness and fat content step of wave calculating measurand, comprising:

First derivative is asked to obtain the sampling time of each interface the ultrasound echo signal for being more than threshold value；

The fat thickness of the measurand is calculated according to the sampling time；

The fat content of measurand is obtained according to the fat thickness.