CN112849812A

CN112849812A - Classification garbage can based on LD3320 voice recognition chip

Info

Publication number: CN112849812A
Application number: CN202011623666.4A
Authority: CN
Inventors: 屠礼芬; 邓荣攀; 彭祺
Original assignee: Hubei Engineering University
Current assignee: Hubei Engineering University
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-28

Abstract

The invention relates to a classification garbage can based on an LD3320 voice recognition chip, which comprises a wireless transmission module, a transceiver, a garbage can, a voice recognition module, an ultrasonic ranging module and a control system, wherein the wireless transmission module is used for transmitting a wireless signal to the transceiver; the garbage can comprises a can body, a can cover, a swing arm and a rotating mechanism; the rotating mechanism comprises a base, a reduction gear set, a driving motor and a driving circuit; the voice recognition module comprises a sound pick-up and an LD3320 voice recognition chip, receives analog voice information, converts the analog voice information into digital voice information, recognizes keywords and sends the digital voice information to the control system. The method can accurately release the garbage without the user having garbage classification knowledge, thereby solving the problem of inaccurate release; the social popularization of garbage classification is facilitated; the garbage stacking degree in the can be accurately and automatically judged, and the alarm can be given at a proper time, so that the workload of manual maintenance is further reduced.

Description

Classification garbage can based on LD3320 voice recognition chip

Technical Field

The invention relates to the technical field of garbage classification, in particular to a classification garbage can based on an LD3320 voice recognition chip.

Background

Along with the progress of society, human material life is greatly enriched, but simultaneously, various garbage is generated in human activities; garbage destroys the global environment on which humans live in a very hostile trend. One of the root causes of environmental damage from waste is that it is not properly disposed of from the source.

At present, most of garbage cans are single, and classified throwing is not set; various wastes are mixed and thrown together, and are not subjected to classified and rationalized treatment in the later period, so that a plurality of hazardous substances reversely enter the earth environment circle, and the living environment of human beings, such as soil, water resource, atmosphere and the like, is deteriorated. On the other hand, the garbage is also a resource, and a large amount of garbage is also a huge waste if the garbage is not classified or destroyed. Therefore, in the situation of increasing garbage yield and environmental condition deterioration, how to realize garbage resource utilization to the maximum extent, reduce the amount of garbage disposal and improve living environment state through garbage classification management is an urgent problem which is commonly concerned by countries in the world at present. The garbage classification treatment has the advantages of reducing land erosion, reducing pollution and the like. Therefore, the classified collection of the garbage can reduce the garbage treatment amount and treatment equipment, reduce the treatment cost and reduce the consumption of land resources, and has social, economic and ecological benefits.

The garbage can which is one of the most important channels of the garbage collection terminal at present has the following defects:

1. due to the fact that the user lacks knowledge of garbage classification, various types of garbage cannot be classified accurately, and therefore the situation that classified putting of the user is inaccurate frequently happens;

2. the garbage classification knowledge is too numerous and complicated, so that the classification learning cost of a user is very high, and the social popularization of garbage classification is seriously influenced.

Disclosure of Invention

Aiming at the problems, the invention provides a classification garbage can based on an LD3320 voice recognition chip, and aims to fundamentally solve the problem of inaccurate garbage throwing.

In order to solve the problems, the technical scheme provided by the invention is as follows:

the utility model provides a categorised garbage bin based on LD3320 speech recognition chip, contains wireless transmission module, transceiver, garbage bin, speech recognition module, ultrasonic ranging module and control system, wherein:

and the wireless transmission module is used for receiving the digital control signal from the control system and forwarding the digital control signal to the transceiver, receiving the feedback signal from the transceiver and forwarding the feedback signal to the control system, and receiving the digital voice information from the voice recognition module and forwarding the digital voice information to the control system.

The transceiver is used for receiving the digital control signal from the wireless transmission module, forwarding the digital control signal to the signal modulation chip, receiving the garbage height signal from the ultrasonic ranging module, packaging the garbage height signal into a feedback signal and sending the feedback signal to the wireless transmission module; the signal modulation chip is used for receiving the digital control signal from the transceiver, converting the digital control signal into an analog control signal and finally sending the analog control signal to the motor; the analog control signal output end of the signal modulation chip is in electric signal connection with the analog control signal input end of the motor; the digital control signal comprises a starting signal, a rotating direction signal, a rotating quantity signal and a stopping signal; the feedback signals comprise motor rotating shaft position signals and garbage height signals; the digital control signal output end of the transceiver is in electric signal connection with the digital control signal input end of the signal modulation chip, the digital control signal input end of the transceiver is in electric signal connection with the digital control signal output end of the wireless transmission module, and the feedback signal output end of the transceiver is in electric signal connection with the feedback signal input end of the wireless transmission module.

The garbage can is used for storing garbage; the garbage can comprises a can body, a can cover, a swing arm and a rotating mechanism; the rotating mechanism comprises a base, a reduction gear set, a driving motor and a driving circuit; the base is fixedly connected with the barrel body; one end of the swing arm is fixedly connected with the barrel cover, and the other end of the swing arm is fixedly connected with the torque output end of the reduction gear set; a rotating shaft of the driving motor is fixedly connected with a torque input end of the reduction gear set; the shell of the motor is fixedly connected with the base; the driving circuit comprises a position detector and the signal modulation chip; the position detector is used for acquiring the position of the rotating shaft of the motor, converting the position of the rotating shaft of the motor into a motor rotating shaft position signal and finally sending the motor rotating shaft position signal to the transceiver; and the motor rotating shaft position signal output end of the position detector is in electric signal connection with the motor rotating shaft position signal input end of the transceiver.

The voice recognition module is used for receiving analog voice information from a user, converting the analog voice information into digital voice information, recognizing a keyword in the digital voice information and finally sending the keyword to a control system; the speech recognition module includes adapter and LD3320 speech recognition chip, wherein:

the sound pick-up is used for receiving the analog voice information from a user and then sending the analog voice information to the LD3320 voice recognition chip; the positive output end of the sound pick-up is connected with the MIC [ P ] stitch electric signal of the LD3320 voice recognition chip, and the negative output end of the sound pick-up is connected with the MIC [ N ] stitch electric signal of the LD3320 voice recognition chip.

The LD3320 voice recognition chip is used for converting the analog voice information into digital voice information, then recognizing a keyword in the digital voice information, and finally sending the keyword to a control system through a wireless transmission module; the pins P0-P7 of the LD3320 voice recognition chip are all connected with the corresponding interface electric signals of the wireless transmission module.

The ultrasonic ranging module is used for detecting the height of the garbage stored in the garbage can body of the garbage can in real time; and the garbage height signal output end of the ultrasonic ranging module is in electric signal connection with the garbage height signal input end of the transceiver.

And the control system is used for receiving the feedback signal and the keywords from the wireless transmission module, processing the feedback signal and the keywords to obtain a digital control signal and finally sending the digital control signal to the wireless transmission module.

Preferably, the wireless transmission module comprises an ESP32-S audio module.

Preferably, the wireless transmission module includes an ESP826 processor.

Preferably, the ultrasonic ranging module comprises a US-100 ultrasonic module.

Preferably, the ultrasonic ranging module comprises an HC-SR04 ultrasonic module.

Compared with the prior art, the invention has the following advantages:

1. the invention adopts voice recognition and automatically judges the garbage types, so that the garbage can be accurately thrown in without the garbage classification knowledge of the user, and the problem of inaccurate throwing is fundamentally solved.

2. The invention avoids the learning cost of the user because the user does not need to learn the garbage throwing knowledge, and is very beneficial to the social popularization of garbage classification.

3. The height of the garbage in the can is judged by adopting ultrasonic waves, so that the stacking degree of the garbage in the can be accurately and automatically judged, an alarm is given at a proper time, and the workload of manual maintenance is further reduced.

Drawings

FIG. 1 is a schematic view of a sorting trash can according to an embodiment of the present invention;

FIG. 2 is a schematic external view of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a rotating mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an ultrasonic timing sequence according to an embodiment of the present invention.

Wherein: 1. the barrel comprises a barrel body, a barrel cover, a rotating mechanism, a base, a swing arm, a speed reduction gear set, a driving motor and a driving circuit, wherein the barrel body is 2, the barrel cover is 3, the base is 4, the swing arm is 5, the speed reduction gear set is 6, and the driving motor is 7 and the driving circuit is 8.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to be purely exemplary and are not intended to limit the scope of the invention, as various equivalent modifications of the invention will occur to those skilled in the art upon reading the present disclosure and fall within the scope of the appended claims.

As shown in fig. 1, a classification garbage can based on LD3320 speech recognition chip includes wireless transmission module, transceiver, garbage can, speech recognition module, ultrasonic ranging module and control system, wherein:

In this embodiment, the wireless transmission module is implemented by using a WIFI module. The Wi-Fi module is also called a serial port Wi-Fi module, belongs to an internet of things transmission layer, and has the function of converting a serial port or TTL level into an embedded module which accords with a Wi-Fi wireless network communication standard, and a built-in wireless network protocol IEEE802.11b.g.n protocol stack and a TCP/IP protocol stack. The traditional hardware equipment is embedded into a Wi-Fi module, can be directly connected to the Internet by utilizing Wi-Fi, and is an important component for realizing application of Internet of things such as wireless smart home and M2M.

The WiFi module performs fast networking by means of a specified channel number. In a typical wireless networking process, a scan is first automatically made of all the channels present to search for the (or Adhoc) network created by the destination AP to which the connection is to be made. The serial port WiFi module provides settings: the parameters of the working channel can directly designate the working channel of the module under the condition of the known channel of the target network, thereby achieving the purpose of accelerating the networking speed. The wireless signal received from the antenna is filtered by the filter, enters the antenna for selection, is filtered again, then enters a power amplifier or a low noise amplifier, and is sent into the WI-FI1 chip, the WiFi chip processes the wireless signal and then sends the processed wireless signal to the CPU through the SDIO interface, the CPU sends the data to some software or application programs, the application programs or software processes the data and then sends the processed data to the display for display, and stores some data, some network control and operation of the user and some data are processed and controlled by the CPU through the application programs and sent to the WiFI chip through the SIDO interface, and the WiFI chip converts the data into data signals suitable for sending and outputs the data signals to the power amplifier circuit for power amplification. Then the signal data is sent to the antenna to be transmitted after filtering, antenna selection and secondary filtering. Data from the WiFi chip to the CPU is transmitted through the SDIO interface.

The WIFI module can choose for use the WIFI module that contains ESP32-S audio frequency module, also can choose for use the WIFI module that contains ESP826 treater.

In this embodiment, a WIFI module including an ESP826 processor is selected, specifically, a series of WIFI module modules developed by an ain ESP8266 chip by an Ai-thinker company are a money internet of things chip. The chip can work in three modes, which are respectively as follows: the AP mode, the station mode and the mixed mode are controlled by a common AT instruction, and the specific parameters are as follows:

802.11 b/g/n; built-in low-power 32-bit CPU: can double as an application processor; a 10-bit high-precision ADC is arranged in the device; a TCP/IP protocol stack is built in; a built-in TR switch, balun, LNA, power amplifier and matching network; a built-in PLL, a voltage stabilizer and a power management component; antenna diversity is supported; STBC, 1x1MIMO, 2x1 MIMO; aggregation of A-MPDUs, A-MSDUs, and a guard interval of 0.4 s; WiFi @2.4GHz supports a WPA/WPA2 security mode; the STA/AP/STA + AP working mode is supported; support SmartConfig functions (including Android and iOS devices); SDIO2.0, (H) SPI, UART, I2C, I2S, IRRemoteControl, PWM, GPIO; the deep sleep holding current is 10uA, and the turn-off current is less than 5 uA; awakening, connecting and transmitting data packets within 2 ms; output power of +20dBm in 802.11b mode; the standby state consumed power is less than 1.0mW (DTIM 3); working temperature range: -40 ℃ to 125 ℃; and the authentication is carried out by FCC, CE, TELEC, WiFialliance and SRRC.

The chip uses a 3.3V direct-current power supply, has small volume, low power consumption, transparent transmission support, no serious packet loss phenomenon and ultralow price. Meanwhile, ESP8266 allows a user to write a ROM by himself, not only can the data transmission function be realized, but also the WiFi hotspot can be controlled to be established, or the WiFi hotspot can be connected to a certain designated router as a WiFi client, and meanwhile, all GPIOs can be programmed and controlled.

The transceiver is used for receiving the digital control signal from the wireless transmission module, forwarding the digital control signal to the signal modulation chip, receiving the garbage height signal from the ultrasonic ranging module, packaging the garbage height signal into a feedback signal and sending the feedback signal to the wireless transmission module; the transceiver is arranged on the garbage can; the signal modulation chip is used for receiving the digital control signal from the transceiver, converting the digital control signal into an analog control signal and finally sending the analog control signal to the motor; the analog control signal output end of the signal modulation chip is in electric signal connection with the analog control signal input end of the motor; the digital control signal comprises a starting signal, a rotating direction signal, a rotating quantity signal and a stopping signal; the feedback signal comprises a motor rotating shaft position signal and a garbage height signal; the digital control signal output end of the transceiver is in electric signal connection with the digital control signal input end of the signal modulation chip, the digital control signal input end is in electric signal connection with the digital control signal output end of the wireless transmission module, and the feedback signal output end is in electric signal connection with the feedback signal input end of the wireless transmission module.

The garbage can is used for storing garbage; as shown in fig. 2, the trash can comprises a can body 1, a can cover 2, a swing arm 5 and a rotating mechanism 3;

as shown in fig. 3, the rotation mechanism 3 includes a base 4, a reduction gear set 6, a drive motor 7, and a drive circuit 8; the base 4 is fixedly connected with the barrel body 1; one end of the swing arm 5 is fixedly connected with the barrel cover 2, and the other end of the swing arm is fixedly connected with the torque output end of the reduction gear set 6; the rotating shaft of the driving motor 7 is fixedly connected with the torque input end of the reduction gear set 6; the shell of the motor is fixedly connected with the base 4; the drive circuit 8 includes a position detector and a signal modulation chip; the position detector is used for acquiring the position of a rotating shaft of the motor, converting the position of the rotating shaft of the motor into a motor rotating shaft position signal and finally sending the motor rotating shaft position signal to the transceiver; the motor rotating shaft position signal output end of the position detector is in electric signal connection with the motor rotating shaft position signal input end of the transceiver.

The voice recognition module is used for receiving analog voice information from a user, converting the analog voice information into digital voice information, recognizing a keyword in the digital voice information and finally sending the keyword to the control system; the speech recognition module includes adapter and LD3320 speech recognition chip, wherein:

the sound pick-up is used for receiving the analog voice information from a user and then sending the analog voice information to the LD3320 voice recognition chip; the positive output end of the sound pick-up is connected with the MIC P pin electric signal of the LD3320 voice recognition chip, and the negative output end is connected with the MIC N pin electric signal of the LD3320 voice recognition chip.

The LD3320 voice recognition chip is used for converting the analog voice information into digital voice information, then recognizing keywords in the digital voice information, and finally sending the keywords to the control system through the wireless transmission module; the P0-P7 pins of the LD3320 voice recognition chip are all connected with the corresponding interface electric signals of the wireless transmission module.

The ultrasonic ranging module is used for detecting the height of garbage stored in the garbage can body 1 of the garbage can in real time; the ultrasonic ranging module is arranged on the garbage can; the rubbish height signal output end of the ultrasonic ranging module is in electric signal connection with the rubbish height signal input end of the transceiver.

The ultrasonic ranging module can be an US-100 ultrasonic module or an HC-SR04 ultrasonic module.

In this embodiment, the ultrasonic ranging module is an HC-SR04 ultrasonic module. The HC-SR04 ultrasonic module adopts IO to trigger ranging, and gives a high level signal of at least 10uS, the actual 40-50uS effect is good, the module automatically sends 8 square waves of 40KHz, a signal returns, a high level is output through IO, the duration time of the high level is the time from the transmission to the return of the ultrasonic, and the testing distance is (high level time: sound velocity (340M/S))/2. The ultrasonic timing chart is shown in fig. 4. The installation is convenient, difficult ageing material is firm, corrosion resistant, long service life, adopts IO to trigger range finding test distance (high level time sound velocity 340M/S/2) high accuracy. The product has simple use method, and one control port sends one high level more than 10US, so that the high level output can be waited at the receiving port. When the output is available, the timer can be started to time, and when the port is changed to low level, the value of the timer can be read, and at the moment, the distance can be calculated according to the time of the distance measurement. The value of the mobile measurement can be achieved by the continuous periodic measurement. By adopting the high-end operational amplifier SGM324, HC-SR04+ has wider working voltage (3.3V-5V), and has smaller working current (3mA) under the same distance measurement, software and hardware are completely compatible with the current HC-SR04, and the module has stable performance and accurate measured distance. Can be compared with the ultrasonic ranging modules such as foreign SRFO5, SRF02 and the like. The module has high precision, the blind area (2cm) is ultra-close, and stable distance measurement is a powerful basis for the successful market of the product. The module is completely compatible with a GH-311 anti-theft module, and the working voltage is as follows: DC5V, quiescent current <2mA, level out: high 5V, low 0V, detection distance: 2CM to 450CM, the induction angle is less than or equal to 15 degrees, and the high precision can reach 0.3 CM. Table 1 identifies the electrical parameters of the HC-SR04 ultrasound module:

TABLE 1 electric appliance parameter table of HC-SR04 ultrasonic wave module

Electrical parameter	HC-SR04 ultrasonic module
		Operating voltage	DC5V
Operating current	15mA
		Frequency of operation	40kHz
Farthest range	4m
		Near range	2cm
Measuring angle	15 degrees
		Inputting a trigger signal	TTL pulse of 10uS
Outputting a reverberation signal	Output TTL level signal proportional to range
		Specification and size	452015mm

And the control system is used for receiving the feedback signal and the keywords from the wireless transmission module, processing the feedback signal and the keywords to obtain a digital control signal, and finally sending the digital control signal to the wireless transmission module.

In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a categorised garbage bin based on LD3320 speech recognition chip which characterized in that: contain wireless transmission module, transceiver, garbage bin, speech recognition module, ultrasonic ranging module and control system, wherein:

the wireless transmission module is used for receiving the digital control signal from the control system and forwarding the digital control signal to the transceiver, receiving the feedback signal from the transceiver and forwarding the feedback signal to the control system, and receiving the digital voice information from the voice recognition module and forwarding the digital voice information to the control system;

the transceiver is used for receiving the digital control signal from the wireless transmission module, forwarding the digital control signal to the signal modulation chip, receiving the garbage height signal from the ultrasonic ranging module, packaging the garbage height signal into a feedback signal and sending the feedback signal to the wireless transmission module; the signal modulation chip is used for receiving the digital control signal from the transceiver, converting the digital control signal into an analog control signal and finally sending the analog control signal to the motor; the analog control signal output end of the signal modulation chip is in electric signal connection with the analog control signal input end of the motor; the digital control signal comprises a starting signal, a rotating direction signal, a rotating quantity signal and a stopping signal; the feedback signals comprise motor rotating shaft position signals and garbage height signals; the digital control signal output end of the transceiver is in electric signal connection with the digital control signal input end of the signal modulation chip, the digital control signal input end is in electric signal connection with the digital control signal output end of the wireless transmission module, and the feedback signal output end is in electric signal connection with the feedback signal input end of the wireless transmission module;

the garbage can is used for storing garbage; the garbage can comprises a can body (1), a can cover (2), a swing arm (5) and a rotating mechanism (3); the rotating mechanism (3) comprises a base (4), a reduction gear set (6), a driving motor (7) and a driving circuit (8); the base (4) is fixedly connected with the barrel body (1); one end of the swing arm (5) is fixedly connected with the barrel cover (2), and the other end of the swing arm is fixedly connected with the torque output end of the reduction gear set (6); the rotating shaft of the driving motor (7) is fixedly connected with the torque input end of the speed reducing gear set (6); the shell of the motor is fixedly connected with the base (4); the drive circuit (8) comprises a position detector and the signal modulation chip; the position detector is used for acquiring the position of the rotating shaft of the motor, converting the position of the rotating shaft of the motor into a motor rotating shaft position signal and finally sending the motor rotating shaft position signal to the transceiver; the motor rotating shaft position signal output end of the position detector is in electric signal connection with the motor rotating shaft position signal input end of the transceiver;

the sound pick-up is used for receiving the analog voice information from a user and then sending the analog voice information to the LD3320 voice recognition chip; the positive output end of the sound pick-up is electrically connected with an MIC (microphone) pin of the LD3320 voice recognition chip, and the negative output end of the sound pick-up is electrically connected with an MIC (microphone) pin of the LD3320 voice recognition chip;

the LD3320 voice recognition chip is used for converting the analog voice information into digital voice information, then recognizing a keyword in the digital voice information, and finally sending the keyword to a control system through a wireless transmission module; the P0-P7 pins of the LD3320 voice recognition chip are all connected with the corresponding interface electric signals of the wireless transmission module;

the ultrasonic ranging module is used for detecting the height of garbage stored in the garbage can body (1) of the garbage can in real time; the garbage height signal output end of the ultrasonic ranging module is in electric signal connection with the garbage height signal input end of the transceiver;

2. The LD3320 voice recognition chip based classification trash can of claim 1, wherein: the wireless transmission module comprises an ESP32-S audio module.

3. The LD3320 voice recognition chip based classification trash can of claim 1, wherein: the wireless transmission module includes an ESP826 processor.

4. The LD3320 voice recognition chip based classification trash can of claim 1, wherein: the ultrasonic ranging module comprises an US-100 ultrasonic module.

5. The LD3320 voice recognition chip based classification trash can of claim 1, wherein: the ultrasonic ranging module comprises an HC-SR04 ultrasonic module.