WO2017210955A1

WO2017210955A1 - Animal heart sound signal acquisition device and acquisition system

Info

Publication number: WO2017210955A1
Application number: PCT/CN2016/089840
Authority: WO
Inventors: 郑勇; 王忠山
Original assignee: 深圳市沃特沃德股份有限公司
Priority date: 2016-06-08
Filing date: 2016-07-12
Publication date: 2017-12-14
Also published as: CN106037791A; CN106037791B

Abstract

Disclosed are a heart sound signal acquisition device and an acquisition system. The animal heart sound signal acquisition device (10) comprises a pectoral girdle body. A heart sound signal acquisition unit is built in the pectoral girdle body. The heart sound signal acquisition unit comprises a sensor module (101), a processing module (102), a wireless communication module (103), a storage module (104) and a power supply module (105).The connection between the sensor module (101) and the processing module (102) is used for acquiring an analogue heart sound signal of an animal and sending same to the processing module (102) in real time. The connection between the processing module (102) and the wireless communication module (103) is used for performing A/D conversion on the received analogue heart sound signal and sending same to the wireless communication module (103) in real time. The wireless communication module (103) is used for sending the received digital heart sound signal to a terminal device (30). The terminal device (30) is used for displaying the animal heart sound signal in real time, and for playing the heart sound signal, and also for analysing the heart sound signal and giving an alarm when an abnormality is detected. The heart sound signal acquisition device and acquisition system can acquire an animal heart sound signal in real time and give an alarm when an abnormality is detected.

Description

Title: Inventive Name: Animal Heart Sound Signal Collecting Device and Collecting System Technical Field

[0001] The present invention belongs to the field of smart wear technology, and in particular, to an animal heart sound signal collecting device and an acquisition system.

Background technique

[0002] The heart sound signal is the sound produced by systolic diastolic sputum, and detecting heart sound signals is an indispensable means of understanding the state of the heart and blood vessels. The current detection of animal heart sound signals requires a dedicated medical stethoscope, which is usually used to measure heart sound signals in animals. However, medical stethoscopes cannot collect animal heart sound signals with them.

[0003] Existing smart wearable devices such as animal chest straps do not have a heart sound signal acquisition and detection function, and cannot accurately record heart sound signals. When a heart sound is abnormal, it cannot be found and alarmed.

technical problem

[0004] The technical problem to be solved by the present invention is to provide an animal heart sound signal collecting device and an acquisition system, and aim to provide a device capable of collecting an animal heart sound signal and detecting an abnormal 吋 alarm.

Problem solution

Technical solution

[0005] The present invention provides an animal heart sound signal collecting device, the animal heart sound signal collecting device includes a chest strap body, the chest strap body has a heart sound signal collecting unit built therein; the heart sound signal collecting unit comprises: a sensor Module, processing module, wireless communication module;

[0006] The sensor module is connected to the processing module, and configured to collect an analog heart sound signal of the animal and send the collected simulated heart sound signal to the processing module;

The processing module is connected to the wireless communication module, and configured to perform the received analog heart sound signal.

The A/D conversion process sends the processed digitized heart sound signal to the wireless communication module; [0008] the wireless communication module is configured to send the received digital heart sound signal.

[0009] Further, the sensor module is disposed on a position of the chest strap body corresponding to an animal heart.

[0010] Further, the sensor module includes a PVDF piezoelectric film piece and a preamplifier circuit connected in sequence , filter circuit and post-amplifier circuit.

[0011] Further, the wireless communication module includes a wireless radio frequency module and a radio frequency antenna module.

[0012] Further, the wireless communication module includes a Bluetooth module and a Bluetooth antenna module.

[0013] Further, the storage module is further connected to the processing module, and is configured to store the digitized heart sound signal processed by the processing module.

[0014] Further, the power module is further connected to the processing module for supplying power to the heart sound signal collecting device.

[0015] The present invention also provides an animal heart sound signal collecting system, comprising: an animal heart sound signal collecting device and a terminal device;

[0016] The animal heart sound signal collecting device includes a chest strap body, and a heart sound signal collecting unit is built in the chest strap body; the heart sound signal collecting unit comprises: a sensor module, a processing module, and a wireless communication module;

[0017] the sensor module is connected to the processing module, and configured to collect an analog heart sound signal of the animal and send the collected simulated heart sound signal to the processing module;

[0018] the processing module is connected to the wireless communication module, and configured to perform the received analog heart sound signal

The A/D conversion process sends the processed digitized heart sound signal to the wireless communication module; [0019] the wireless communication module is configured to send the received digital heart sound signal;

[0020] The terminal device is configured to receive the digitized heart sound signal sent by the heart sound signal collecting device, and perform analysis, and send an alarm signal after the received digital heart sound signal is not within a preset value range. Further, the sensor module is disposed on the chest strap body at a position corresponding to the animal's heart.

[0021] Further, the sensor module includes a PVDF piezoelectric film piece and a preamplifier circuit sequentially connected

, filter circuit and post-amplifier circuit.

[0022] Further, the wireless communication module includes a wireless radio frequency module and a radio frequency antenna module.

[0023] Further, the storage module is further configured to be connected to the processing module, and configured to store the digitized heart sound signal processed by the processing module.

[0024] Further, the power module is further connected to the processing module for supplying power to the heart sound signal collecting device.

[0025] Further, the terminal device is further configured to perform D/A conversion on the received digital heart sound signal. An audio signal, and driving the earphone or speaker to play the audio signal.

[0026] Further, the terminal device is further configured to display the heart sound signal in a two-dimensional manner.

Advantageous effects of the invention

Beneficial effect

[0027] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an animal heart sound signal collecting device and an acquisition system, which can use the sensor to collect the heart sound signal of the animal and send it to the terminal device through the wireless communication module. The terminal device receives the transmitted heart sound signal, and can display the heart sound signal of the animal in a graphical manner, and can play the heart sound signal, that is, the terminal device has the function of the stethoscope, and the owner can use the terminal device to obtain the heart sound signal collecting device. Animal heart sound signal; When the terminal equipment analyzes that the animal heart sound signal is abnormal, it will automatically alarm.

Brief description of the drawing

DRAWINGS

1 is a schematic diagram of a heart sound signal collecting unit built in an animal heart sound signal collecting apparatus according to an embodiment of the present invention;

2 is a schematic diagram of an ideal heart sound signal waveform output by an animal heart sound signal collecting apparatus according to an embodiment of the present invention;

3 is a storage processing flow diagram in a storage module of an animal heart sound signal collecting apparatus according to an embodiment of the present invention;

4 is a schematic diagram of an animal heart sound signal acquisition system according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a process of displaying an APP center sound data of a terminal device according to an embodiment of the present invention.

Embodiments of the invention

[0008] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0034] The main implementation idea of the present invention is: collecting the heart sound signal of the animal through a PVDF (Polyviny lidene Fluoride, polyvinylidene fluoride, molecular formula: -(CH2-CF2)n-) sensor installed in the heart sound signal collecting device. No., and the processed heart sound signal is processed by the processing module and sent to the APP of the terminal device, the A PP graphically displays the animal heart sound signal, and the peer APP can drive the earphone or the speaker of the terminal device to play the heart sound signal; It can analyze the heart sound signal, and when it is abnormal, it will alarm by sound and light.

[0035] The animal heart sound signal collecting device 10 is specifically described below. The animal heart sound signal collecting device 10 described in the embodiment of the present invention is a smart chest strap device, as shown in FIG.

[0036] The animal heart sound signal collecting device 10 includes a chest strap body, and a heart sound signal collecting unit is built in the chest strap body; the heart sound signal collecting unit includes: a sensor module 101, a processing module 102, and a wireless communication module 103. , the storage module 104, the power module 105;

[0037] The sensor module 101 is connected to the processing module 102, for collecting the simulated heart sound signal of the animal and transmitting the collected simulated heart sound signal to the processing module 102;

[0038] Specifically, the sensor module 101 is disposed on the chest strap body at a position corresponding to the animal's heart. Specifically, the sensor module 101 includes a PVDF piezoelectric film and a signal pre-processing circuit, and the signal pre-processing circuit includes a preamplifier circuit, a band pass filter circuit, and a post-amplifier circuit that are sequentially connected; the sensor module 101 It is used to collect the simulated heart sound signal and amplify and filter the simulated heart sound signal. Figure 2 shows the ideal heart sound signal waveform after processing.

[0039] Specifically, the PVDF piezoelectric film sheet includes a piezoelectric film and two electrodes.

[0040] Specifically, the PVDF piezoelectric thin film equivalent circuit may be an equivalent voltage source or an equivalent charge source. The signal pre-processing circuit first preamplifies the analog heart sound signal, then passes through a band-pass filter circuit (consisting of a low-pass filter circuit and a high-pass filter circuit), and finally passes through a post-stage amplification circuit, and the output waveform is as shown in FIG. 2 . The bandpass filter circuit can be controlled by the switch. The frequency range of the heart sound is 0.1H _Z ~ 2000Hz, so the low frequency cutoff frequency of the heart bandpass filter is taken as Ο.ΙΗζ, and the high frequency cutoff frequency is taken as 2000 Hz. The output of the preamplifier can directly skip the bandpass filter circuit directly to the postamplifier circuit through the gate control. Since the preamplifier signal only amplifies the heartbeat signal to several hundred millivolts, the signal is still weak, so it is amplified by the post stage. The circuit amplifies the simulated heart sound signal to a range of +5V and outputs to the processing module 102.

The processing module 102 is connected to the wireless communication module 103, configured to perform A/D conversion processing on the received analog heart sound signal, and send the processed digital heart sound signal to the wireless communication module. [0042] Specifically, the processing module 102 is the core of the system, which adopts the MTK6580 Cortex A7 quad-core 1.4G processor, supports the 2G/3G system, is responsible for A/D conversion, and controls the Bluetooth BLE.

[0043] Specifically, the A/D conversion circuit adopts 8 bits, and the measured signal can be recovered according to the Lekrest sampling theorem sampling frequency of 4 k z, and the rate of the heart sound signal is 32 kb/s.

[0044] The wireless communication module 103 is configured to send the received digital heart sound signal to the terminal device 30.

[0045] Specifically, the wireless communication module 103 supports multiple communication systems such as Bluetooth BLE/2G/3G/4G.

[0046] Specifically, the wireless communication module 103 includes a wireless radio frequency module and a radio frequency antenna module. The radio frequency module is composed of a radio frequency front end + a radio frequency transceiver, and the radio frequency antenna module performs radio frequency signal reception and transmission, and interfaces with the processing module 102.

[0047] Specifically, the wireless communication module 103 further includes a Bluetooth module and a Bluetooth antenna module. The Bluetooth module and the Bluetooth antenna module are responsible for handling the Bluetooth BLE function.

[0048] In detail, the smart chest strap device is controlled by the terminal device 30. Remotely, the stored digital heart sound signal is transmitted to the APP of the terminal device 30 through the 2G/3G/4G mobile network; at a short distance, the stored digital heart sound signal is transmitted to the APP of the terminal device 30 through the Bluetooth BLE.

[0049] More specifically, at a close distance, the APP establishes a connection with the animal intelligent chest strap device through the BLE profile of the Bluetooth. The main functions of the BLE are fast search, fast connection, ultra-low power retention connection, and the transmission rate of the BLE is 1 Mbps. Suitable for the low power consumption of the wearable product and the need to transmit the heart sound signal, the APP caches the digital heart sound signal obtained by the BLE channel, and the size of the buffer space is consistent with the size of the heart sound buffer space of the chest strap. In the remote, the APP notifies the animal chest strap device through the server, and transmits the heart sound signal by using the 2G/3G/4G mobile network. The uplink and downlink rate of 2G/3G/4G is much larger than the heart sound signal rate of 32Kbps, which satisfies the demand of the transmitted heart sound signal. The size of the cache space is the same as the short range.

[0050] The storage module 104 is connected to the processing module 402, and configured to store the digitized heart sound signal processed by the processing module 102.

[0051] Specifically, the storage module 104 includes an MCP for recording heart sound signals and supporting a high speed memory system. The storage space is 20Mb, and the heart sound signal can be stored for more than 10 minutes. The queue structure of the FIFO is adopted. The storage processing flow is shown in Figure 3, which is specifically as follows:

[0052] S201, reading heart sound A/D sampling data;

[0053] S202, storing in the RAM; [0054] S203, continue to read the heart sound A/D sampling data, and store the RAM address +1;

[0055] S204, determining whether the RAM address is full; if not, returning to step S201;

[0056] S205. If it is determined that the RAM address is full, the RAM is the start address, and the process returns to step S201.

[0057] The power module 105 is connected to the processing module 102, and is configured to supply power to the heart sound signal collecting device.

[0058] Further, the power module 105 is composed of a dedicated power management chip, and is responsible for the power-off processing, power supply, battery charging, and power management of the heart sound signal collecting device 10.

[0059] The present invention also provides an animal heart sound signal acquisition system, as shown in FIG. 4, including an animal heart sound signal acquisition device 10 and a terminal device 30;

[0060] The terminal device 30 is configured to receive the digitized heart sound signal sent by the heart sound signal collecting device 10, and display the heart sound signal in a two-dimensional manner;

Specifically, the terminal device 30 dynamically displays the heart sound signal in a two-dimensional manner on the APP corresponding to the heart sound signal collecting device 10, wherein the X axis is the daytime and the Y axis is the heart sound signal voltage amplitude.

[0062] Specifically, the terminal device 30 includes a mobile phone, a tablet computer, and the like. The APP is an application running on a terminal device such as a smart phone, and supports both Android/IOS systems.

[0063] Specifically, the waveform of the APP heart sound signal shows that 4k data can be obtained per second according to the sampling frequency of 4k. Take the HD screen with resolution of 1280x720 as an example, use horizontal display, its 1280 direction is X axis, the unit interval is sampling interval and 0.25ms; 720 direction is Y axis, the unit interval is _mv voltage, according to 2 0 per second The frame rate, which can display 1280 points per frame, can update 20x1280=25600 points per second, fully satisfying the heart sound signal of 4k per second. The display mode is that the heart sound waveform is from left to right, and the scroll mode is used to move to the right in the leftmost direction of the display area. When new data comes in, the old data is pushed backwards, and the number of data updated per frame = (4000-1280) /20=136. The display waveform adopts multi-threading technology, and the drawing operation is continuously performed. The displayed frame rate and number of points can also be set by yourself. The following describes the display process of 1 second heart sound data. The frame rate of 20 frames per second is used, and 136 points are updated each time. The display steps are as shown in Figure 5, specifically:

[0064] step S401, setting a buffer, setting a heart sound buffer area address pointer;

[0065] Step S402, reading 1280 heart sound buffer data according to the heart sound buffer area address pointer;

[0066] Step S403, calling a point function, and sequentially displaying 1280 points of heart sound data on the screen;

[0067] step S404, the heart sound buffer area address pointer is increased by 136, and the heart sound buffer data is read; [0068] Step S405, determining whether the heart sound buffer area address pointer is equal to 2720, and if so, returning to step S401, and if not, proceeding to step S406;

[0069] Step S406, determining whether the timer is full, and if yes, returning to step S402.

[0070] The terminal device 30 is further configured to perform D/A conversion on the received digital heart sound signal to obtain an audio signal.

And driving the earphone or the speaker to play the audio signal;

[0071] Specifically, the APP of the terminal device 30 directly reads the digitized heart sound signal of the heart sound buffer area, and performs D/

After the A conversion process is sent to the audio system of the terminal device, the earphone or the Speaker speaker is driven to broadcast the heart sound signal, and the effect is the same as the stethoscope. The length of the play is the same as the length of the sample, and can also be set.

[0072] The terminal device 30 is further configured to analyze the received digitized heart sound signal, and send an alarm signal after the received digital heart sound signal is not within a preset value range.

[0073] Specifically, the APP compares the collected heart sound signal with the stored normal heart sound signal, and is not abnormal in the preset value range; if an abnormality is found, the APP will actively alarm in the sound and light manner.

[0074] The invention combines the intelligent chest strap device integrated with the PVDF sensor technology with the wireless communication technology and the APP application, and uses the smart phone as a stethoscope, and the actual transmission of the heart sound data is not high, as long as there is 2G/3G/ The remote or Bluetooth-enabled short range covered by the 4G mobile network can collect heart sound signals randomly and play and display them on terminal devices such as smart phones. It solves the problem of existing products, fills in the application blank of animal intelligent wearing equipment, helps to understand the heart sound information of animals, and also analyzes the heart sound signal of animals to better understand the animal's physical condition.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Within the scope of protection of the invention.

Claims

Claim

An animal heart sound signal collecting device, wherein the animal heart sound signal collecting device comprises a chest strap body, a heart sound signal collecting unit is built in the chest strap body; the heart sound signal collecting unit comprises: a sensor module, processing a module, a wireless communication module; the sensor module is connected to the processing module, configured to collect an analog heart sound signal of the animal, and send the collected simulated heart sound signal to the processing module; the processing module and the Wireless communication module connection for performing the received analog heart sound signal

The A/D conversion process sends the processed digitized heart sound signal to the wireless communication module; the wireless communication module is configured to send the received digital heart sound signal. The animal heart sound signal collecting apparatus according to claim 1, wherein said sensor module is disposed at a position on said chest strap body corresponding to an animal's heart.

The animal heart sound signal collecting apparatus according to claim 1, wherein said sensor module comprises a PVDF piezoelectric film, a preamplifier circuit, a filter circuit and a post amplifying circuit which are sequentially connected.

The animal heart sound signal collecting apparatus according to claim 1, wherein the wireless communication module comprises a wireless radio frequency module and a radio frequency antenna module.

The animal heart sound signal collecting apparatus according to claim 1, wherein the wireless communication module comprises a Bluetooth module and a Bluetooth antenna module.

The animal heart sound signal collecting apparatus according to claim 1, further comprising a storage module, wherein the storage module is connected to the processing module for storing the digitized heart sound signal processed by the processing module.

The animal heart sound signal collecting apparatus according to claim 1, further comprising a power module, wherein the power module is connected to the processing module for supplying power to the heart sound signal collecting device.

An animal heart sound signal collecting system, comprising: an animal heart sound signal collecting device and a terminal device; the animal heart sound signal collecting device comprises a chest strap body, and a heart sound signal collecting unit is built in the chest strap body; The heart sound signal acquisition unit includes

: a sensor module, a processing module, a wireless communication module; the sensor module and the location The processing module is configured to collect the simulated heart sound signal of the animal and send the collected simulated heart sound signal to the processing module; the processing module is connected to the wireless communication module, and is configured to receive the simulated The heart sound signal is subjected to A/D conversion processing, and the processed digital heart sound signal is sent to the wireless communication module; the wireless communication module is configured to send the received digital heart sound signal; the terminal device is used for Receiving and analyzing the digitized heart sound signal sent by the heart sound signal collecting device, and sending an alarm signal when the received digital heart sound signal is not within a preset value range.

[Claim 9] The animal heart sound signal acquisition system according to claim 8, wherein the sensor module is disposed on a position of the chest strap body corresponding to an animal heart.

[Claim 10] The animal heart sound signal acquisition system according to claim 8, wherein the sensor module comprises a PVDF piezoelectric film, a preamplifier circuit, a filter circuit, and a post amplifying circuit which are sequentially connected.

[Claim 11] The animal heart sound signal acquisition system according to claim 8, wherein the wireless communication module comprises a wireless radio frequency module and a radio frequency antenna module.

[Claim 12] The animal heart sound signal collecting system according to claim 8, further comprising a storage module, wherein the storage module is connected to the processing module, and configured to store the digitized heart sound processed by the processing module signal.

[Claim 13] The animal heart sound signal collecting system according to claim 8, further comprising a power module, wherein the power module is connected to the processing module for supplying power to the heart sound signal collecting device.

[Claim 14] The animal heart sound signal collecting system according to claim 8, wherein the terminal device is further configured to perform D/A conversion of the received digital heart sound signal to obtain an audio signal, and drive the earphone or the speaker. Playing the audio signal.

[Claim 15] The animal heart sound signal collecting system according to claim 8, wherein the terminal device is further configured to display the heart sound signal in a two-dimensional manner.