阅读说明：本技术 一种鸟声录制系统 (Bird sound recording system ) 是由 毛汉领 张启鹏 熊永敬 李欣欣 黄振峰 于 2018-07-09 设计创作，主要内容包括：本发明为一种鸟声录制系统,由控制模块、滤声模块、鸟声录制模块、蓝牙发送模块、拾音模块、感应模块组成。控制模块控制整个系统开始录音和停止录音等的；拾音模块用于去掉噪声并接收鸟的叫声；鸟声录制模块接收来自拾音模块录制的鸟的叫声,并转化为数字信号,以无损的格式储存；蓝牙发送模块用于与手机或平板等的连接,便于对系统录音的控制和数据的传输。本发明具有功耗低、体积小、电路简单、操作简单、可靠性强等优点,可直接放到鸟巢中进行录音,解决了在录音系统体积小的前提下野外录制鸟叫声的时间短的问题,极大方便了鸟声的研究。(The invention relates to a bird sound recording system which comprises a control module, a sound filtering module, a bird sound recording module, a Bluetooth sending module, a pickup module and an induction module. The control module controls the whole system to start recording, stop recording and the like; the pickup module is used for removing noise and receiving the sound of the bird; the bird sound recording module receives the bird sound recorded by the pickup module, converts the bird sound into a digital signal and stores the digital signal in a lossless format; the Bluetooth sending module is used for being connected with a mobile phone or a tablet and the like, and is convenient for controlling system recording and transmitting data. The invention has the advantages of low power consumption, small volume, simple circuit, simple operation, strong reliability and the like, can be directly placed in a bird nest for recording, solves the problem of short time for recording bird cry in the field on the premise of small volume of a recording system, and greatly facilitates the research of bird cry.)

1. A bird sound recording system is characterized by being specially used for recording bird sounds in bird nests, and a matched system is designed for recording the bird sounds. The whole system comprises an induction module, a control module, a sound filtering module, a bird sound recording module, a Bluetooth sending module, a pickup module and a battery module.

2. A bird sound recording system as claimed in claim 1, wherein: the sensing module consists of a gravity sensing module and a heat energy sensing module. When the sensing module senses that the bird is in the bird nest, the recording system is started to start recording. And when the sensing module senses that no bird is in the bird nest, the recording is closed, and the standby mode is entered.

3. A bird sound recording system as claimed in claim 1, wherein: after the pickup module received the bird sound, through control module's control, the module of straining is conveyed to sound signal, strains sound module and handles received sound signal, filters non-bird sound, leaves the bird sound.

4. A bird sound recording system as claimed in claim 1, wherein: the sound filtering module transmits the processed signals to the voice chip, the voice chip converts the processed signals into lossless digital signals to transmit to the storage module after receiving sound, and the storage module stores the lossless digital signals.

5. A bird sound recording system as claimed in claim 1, wherein: the control module adopts an 8052 series single chip microcomputer of STC.

6. A bird sound recording system as claimed in claim 1, wherein: the battery module is 18650 high-capacity rechargeable lithium battery.

7. A bird sound recording system as claimed in claim 1, wherein: the Bluetooth module is used for transmitting the bird sound stored in the system, and wireless control and transmission are achieved.

8. The bluetooth module according to claim 7, wherein the matching is performed successfully after the correct key is inputted by searching the corresponding bluetooth signal in the mobile phone or tablet. The starting and ending of recording can be controlled by the operation of a mobile phone or a tablet and the like. After the control module receives the file extracting request, the control module can control the Bluetooth module to transmit data, and can extract the audio file from the mobile phone or the tablet terminal at that time and empty the memory of the system to ensure the sufficiency of the storage space.

Technical Field

The invention relates to a control system, in particular to a system for recording bird sounds.

Background

Birds generally have special hidden lives, and the image equipment is difficult to shoot. And the precision of researching the life habits of the birds is higher by adopting a mode of capturing the sound spectrum. The bird calling has various meanings such as seeking puppets, protecting guards, seeking friends, fighting and the like. Birds make loud buzzes just like people's voice has own degree of identification, and different kinds, sexes and buzzes are different. Through the research on the singing of the birds and the related behaviors, the biological significance of different singing of the birds and the relation between the singing and the field protection behaviors can be known, and meanwhile, a certain evidence can be provided for the classification of the birds.

There are many kinds of birds, and there are different singing habits according to different life habits. Some birds stay in the bird nest for a long time, the chirping of the birds is concentrated near the bird nest, and more bird samples can be recorded; some birds leave their nests to find food and often require many days to fly back into the nest, and because of their limited time in the nest, fewer samples of bird sounds can be recorded.

The method firstly carries out enhancement processing on the bird song through short-time spectrum estimation, then carries out fast extraction on textural features from an obtained enhanced power spectrum by SDH, and then carries out identification and classification by combining random forests.

At present, equipment specially used for recording bird cry in the market is few, and is expensive, large in equipment volume and complex in structure. Birds live in bird nests and require recording systems that are as small as possible and long in recording time in order not to affect their habits.

The general recording equipment controls the starting of a recording system by a voice control switch, but in a field environment, a plurality of noises including rain, thunder, wind and the like can make the voice control switch conducted, so that other sounds are recorded, and the recording quality is influenced.

The bird nest is generally in a higher position on a tree, the existing recording system cannot realize wireless connection, and can only extract data by replacing the memory card, so that the complexity of work and the danger of work are greatly increased.

Disclosure of Invention

Based on the above, the invention aims to provide a bird sound recording system which is convenient and reliable for recording bird sounds in the field, reduces energy consumption, and solves the problems of large volume, short recording time and complex operation of the existing recording system.

In order to achieve the purpose, the bird sound pickup device comprises an induction module, a control module, a sound filtering module, a bird sound recording module, a Bluetooth sending module and a pickup module.

The sensing module is used for cooperative control of gravity sensing and heat energy sensing.

The gravity sensing is used for primarily judging whether the bird is in the bird nest or not, but the change of the gravity is possibly that other objects fall on the bird nest, and at the moment, the heat energy sensing is used for further judging the existence of the bird.

Only when the gravity sensing and the heat energy sensing judge that the bird is in the bird nest at the same time, the recording system can be controlled to record.

The control module is composed of a 52 series single chip microcomputer. The control program is stored in the singlechip, the program controls the corresponding pin of the singlechip to monitor the pulse signal, and after the pulse signal is monitored, the corresponding operation is executed.

The corresponding operation comprises starting recording; stopping recording; receiving Bluetooth data; and transmitting the Bluetooth data.

The pickup module is used for gathering the bird and calls voice, reduces the noise, improves the definition and the accuracy of bird and calls voice.

When the system starts recording, the sound pickup converts the sound signal into an electric signal and then transmits the electric signal to the sound filtering module.

The acoustic filtering module processes the signal to filter out low and high frequency noise, leaving a birdie signal in the passband. The processed signal is transmitted to the bird sound recording module.

The bird sound recording module is responsible for receiving the electric signals transmitted by the pickup module, and the recording module converts the electric signals into digital signals through sampling and stores the digital signals in a lossless format.

Compared with the audio format of MP3, the lossless format has more complete data storage and higher reducibility, and is beneficial to the analysis of frequency and tone.

The Bluetooth sending module is used for being connected with a mobile phone or a tablet and the like, and is convenient for controlling system recording and transmitting data.

After the Bluetooth signal is searched by the mobile phone or the tablet computer, connection matching is carried out. After the matching is successful, the whole system can be operated at the connecting end, for example, the operations of starting recording, stopping recording and transmitting data are performed.

The wireless transmission is beneficial to remotely extracting data and operating the whole system on the premise of not influencing the life habit of the bird. The wireless transmission also reduces the workload of operators, does not need to climb to a tree for operation, and reduces the danger.

The whole recording system is low in energy consumption, only has the power consumption of 46mAh in a recording state, and only has the power consumption of 41mAh in a non-recording state, so that the power consumption is greatly lower than that of other recording equipment on the market, and the energy is saved.

The invention has the advantages of low power consumption, small volume, simple circuit, simple operation, strong reliability and the like, can be directly placed in a bird nest for recording, solves the problem of short time for recording bird cry in the field on the premise of small volume of a recording system, and greatly facilitates the research of bird cry.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention takes the bird's voice as a recording object, comprehensively considers the life habit of the bird, designs a series of recording technologies surrounding the bird's voice, has pertinence, is suitable for collecting the bird's voice in the field and improves the scientific research efficiency.

2. And each adopted module is simple and has low power consumption. Existing recording devices are generally intended to record human voice and many designs are not necessary for recording birds, such as: screen, keys, play functions, etc. The invention removes unnecessary design, simplifies structure, reduces power consumption, and prolongs the recording time in the field.

3. The sensing module that adopts is gravity response and heat energy response, compares with present acoustic control response, and is more accurate, the more energy saving. Recording bird cry in the field mainly aims to overcome various non-bird sings in the natural environment, and can well avoid false triggering by using gravity sensing and heat energy sensing. When the bird is not in the nest, the recording system is closed, energy is saved, and the service life is prolonged.

Drawings

Fig. 1 is a block diagram of a bird sound recording system according to an embodiment of the present invention.

Fig. 2 is a sensing flow diagram of a birdsound recording system according to an embodiment of the invention.

Fig. 3 is a recording flow diagram of a bird sound recording system according to an embodiment of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples:

referring to fig. 1, a block diagram of a system design is shown. The whole system mainly comprises the six parts, and is low in power consumption and convenient to operate. The sensing module firstly detects the bird in the nest, and then transmits a signal to the control module, and the control module controls the bird sound recording module to start; meanwhile, the sound filtering module receives the sound signal of the pickup module, and filters out environmental noise and the sound of other animals through an algorithm, and the bird calling sound is reserved. The bird song signal is transmitted to the bird song recording module.

In fig. 1, the bluetooth sending module is configured to retrieve the audio file header address of the bird song through the external connection request by the control module after the connection is successful, and send the audio file header address to the bluetooth sending module. And the Bluetooth sending module sends the data to the connection terminal.

Referring to fig. 2, fig. 2 shows a sensing flow chart of the bird sound recording system according to an embodiment, which mainly includes the following steps:

step s 1: the gravity sensing module senses the gravity change of the whole bird nest. The result of gravity sensing includes two cases. The first condition is as follows: and if the gravity sensing module detects the corresponding weight change, the recording is judged to be started, and the signal is transmitted to the next stage for reprocessing. Case two: if the corresponding weight change or the weight change far larger than the set upper limit is not detected, the recording is judged to be closed, and the signal is transmitted to the next stage for reprocessing. In order to prevent the bird nest from gravity change caused by rainwater or other objects falling outside the bird nest, the sensitivity interval of the gravity sensing module is set to be less than 20% of the gravity of the birds and more than 20% of the gravity of the birds.

Step s 2: the signal of s1 controls the start of the heat energy induction, after the start, the heat energy induction of the whole bird nest is induced, and the heat energy induction result comprises two conditions. The first condition is as follows: and after the heat energy sensing module detects that the heat energy is obviously changed, the recording is judged to be started. Case two: and after the heat energy sensing module detects that no obvious heat energy changes, the recording is judged to be closed.

Step s 3: the recording is started by a signal for starting the recording under the cooperative control of the gravity sensing module and the heat sensing module.

Step s 4: the gravity sensing module does not detect that the recording is immediately judged to be closed, and the signal is transmitted to the step, so that the control system closes the recording state and enters a standby state. And after the heat energy sensing module detects that no obvious heat energy changes exist, the recording is judged to be closed, the signal is transmitted to the step, and the control system closes the recording state and enters a standby state.

Referring to fig. 3, a recording process according to the present invention is shown. The control system detects the starting signal and calls a recording program, and the key of the recording program is to find out the initial address of the recorded voice data. And searching the first address data corresponding to the sequence number in the address array through the segment number variable in the execution of the storage program, sending an SETREC < address > and an REC instruction to the bird sound recording module, starting recording the bird sound by the bird sound recording module, and converting the electric signal into a digital signal by the recording module through sampling.

The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.