CN110652246B - Automatic cleaning device for shutter curtain - Google Patents
Automatic cleaning device for shutter curtain Download PDFInfo
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- CN110652246B CN110652246B CN201910940156.0A CN201910940156A CN110652246B CN 110652246 B CN110652246 B CN 110652246B CN 201910940156 A CN201910940156 A CN 201910940156A CN 110652246 B CN110652246 B CN 110652246B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 69
- 238000005259 measurement Methods 0.000 claims abstract description 36
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 24
- 238000005286 illumination Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004861 thermometry Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L4/00—Cleaning window shades, window screens, venetian blinds
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L4/00—Cleaning window shades, window screens, venetian blinds
- A47L4/04—Accessories facilitating cleaning, e.g. venetian blind separators, spreaders, or cleaning racks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses an automatic cleaning device for a blind curtain. The automatic cleaning device includes: the device comprises a signal acquisition module, a communication module and an actuating mechanism; the signal acquisition module comprises an ultrasonic temperature measurement system, a photosensitive diode photometric system, a humidity sensor and a slave machine; the executing mechanism comprises a host, a display screen and a driving motor; the ultrasonic temperature measurement system is used for measuring indoor temperature; the photosensitive diode photometric system is used for measuring indoor illumination; the humidity sensor is used for measuring indoor humidity; the slave machine transmits the measurement data acquired by the signal acquisition module to a host of the execution mechanism through the communication module, and the host controls the driving motor to execute corresponding operation according to the measurement data; the measurement data comprises indoor temperature, indoor illuminance and indoor humidity; the corresponding operations include adjusting the blind switch, adjusting the blade angle, and cleaning the blind. The automatic cleaning device provided by the invention can automatically clean the shutter curtain.
Description
Technical Field
The invention relates to the field of cleaning of window blinds, in particular to an automatic cleaning device for the window blinds.
Background
At present, the intelligent blind curtain has certain self-reaction, regulation and control functions, realizes automation through infrared rays, radio remote control or timing control, and realizes intelligent operation of products by using electronic sensors of sunlight, temperature and wind power; such as automatically adjusting the light intensity, air humidity, etc. according to the indoor environment.
The current intelligent temperature control system for the shutter curtain adopts a universal temperature sensor DS18b20 or DT11 to detect the temperature, and a processor drives a motor to open and close the curtain and adjust the angle according to the value of the detected temperature; although the universal temperature sensor has the advantages of small volume, low hardware cost, strong anti-interference capability and the like, the universal temperature sensor has low precision, large error and poor stability in practical application, is easy to damage, and has greatly reduced sensitivity after multiple measurements; meanwhile, the existing intelligent shutter curtain can only automatically adjust the light intensity and the air humidity, is used for a long time, deposits a large amount of dust, greatly reduces the working efficiency of the intelligent shutter curtain, and can only manually clean the shutter curtain leaf by leaf due to the special structure of the shutter curtain, so that the cleaning efficiency is extremely low.
Disclosure of Invention
The invention aims to provide an automatic cleaning device for a blind curtain, which aims to solve the problems of low temperature measurement precision and low cleaning efficiency of the existing blind curtain.
In order to achieve the purpose, the invention provides the following scheme:
an automatic cleaning device for a blind curtain, comprising: the device comprises a signal acquisition module, a communication module and an actuating mechanism; the signal acquisition module comprises an ultrasonic temperature measurement system, a photosensitive diode photometric system, a humidity sensor and a slave machine; the executing mechanism comprises a host, a display screen and a driving motor;
the ultrasonic temperature measuring system is used for measuring indoor temperature; the photosensitive diode photometric system is used for measuring indoor illuminance; the humidity sensor is used for measuring indoor humidity; the slave machine is respectively connected with the ultrasonic temperature measuring system, the photosensitive diode photometric system and the humidity sensor; the slave machine is used for acquiring the respective measurement data of the ultrasonic temperature measurement system, the photodiode photometric system and the humidity sensor; the measurement data comprises indoor temperature, indoor illuminance and indoor humidity;
the communication module is respectively in wireless connection with the slave machine and the host machine; the slave machine of the signal acquisition module transmits the acquired measurement data to the communication module, and the communication module transmits the measurement data from the signal acquisition module to the host machine of the execution mechanism; the host controls the driving motor to execute corresponding operation according to the measurement data; the corresponding operations include adjusting the blind switch, adjusting the blade angle, and cleaning the blind.
Optionally, the communication module includes two ultrasonic communication modules, which are a first ultrasonic communication module and a second ultrasonic communication module respectively; the first ultrasonic communication module is connected with the slave; the second ultrasonic communication module is connected with the host; the first ultrasonic communication module and the second ultrasonic communication module are in ultrasonic wireless communication; the slave machine carries out digital amplitude modulation on the acquired measurement data through the first ultrasonic communication module and transmits the modulated measurement data to the second ultrasonic communication module; the second ultrasonic communication module sends the modulated measurement data to the host; and the host controls the opening and closing of the blind curtain, the adjustment of the blade angle and the cleaning of the blind curtain according to the modulated measurement data, and displays the modulated measurement data through the display screen.
Optionally, the ultrasonic temperature measurement system collects the indoor temperature once every 1S, and determines the average temperature value once every 10S.
Optionally, the center frequency of the digital amplitude modulation is 30 kHz.
Optionally, the ultrasonic temperature measurement system is used for measuring the indoor temperature and specifically includes:
the ultrasonic temperature measuring system sends out ultrasonic waves, the time from transmitting to returning of the ultrasonic waves and the distance from the ultrasonic temperature measuring system to an obstacle are obtained, the ultrasonic speed is determined according to the time and the distance, and the indoor temperature is determined according to the ultrasonic speed.
Optionally, each blade of the blind is provided with an electric brush and a humidifying nozzle;
the electric brush and the humidifying sprayer are respectively connected with the driving motor; when the indoor humidity detected by the humidity sensor is lower than a humidity threshold value, the host machine controls the humidifying spray head to humidify the shutter curtain through the driving motor, and drives the electric brush to clean the shutter curtain through the driving motor.
Optionally, the humidity threshold is 40% of the standard humidity; the standard humidity is an average humidity of indoor humidity within a time range.
Optionally, the slave is of the model STM 32.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides an automatic cleaning device for a blind window curtain, which measures the indoor temperature through an ultrasonic temperature measuring system, and compared with a general temperature sensor, the ultrasonic temperature measuring system has high precision, small error and high stability, does not directly measure the indoor temperature, determines the indoor temperature through speed, and is not influenced by external environmental factors, thereby improving the accuracy of temperature measurement; simultaneously, this application is according to indoor humidity self-cleaning shutter curtain to avoided the manual work to clean the problem that shutter curtain cleaning efficiency is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a view illustrating the structure of an automatic cleaning device for blinds;
FIG. 2 is a schematic diagram of the operation of the ultrasonic thermometry system of the present invention;
fig. 3 is a schematic diagram of a carrier according to the present invention;
FIG. 4 is a signal waveform diagram of the delay 2ASK provided by the present invention;
FIG. 5 is a schematic diagram of ultrasonic communication provided by the present invention;
fig. 6 is a schematic diagram of non-coherent demodulation provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an automatic cleaning device for a blind curtain, which can improve the accuracy of temperature measurement and automatically clean the blind curtain.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a structural view of an automatic cleaning device for a blind according to the present invention, and as shown in fig. 1, the automatic cleaning device for a blind includes: the device comprises a signal acquisition module 1, a communication module 2 and an execution mechanism 3.
The signal acquisition module 1 comprises an ultrasonic temperature measurement system, a photosensitive diode photometric system, a humidity sensor and an actuating mechanism. The signal acquisition module 1 specifically comprises an ultrasonic temperature measurement system, a photodiode photometric system, a humidity sensor and a slave machine. The communication module 2 comprises two ultrasonic communication modules, namely a first ultrasonic communication module and a second ultrasonic communication module. The executing mechanism 3 specifically comprises a host, a display screen and a driving motor.
The ultrasonic temperature measuring system is used for measuring indoor temperature; the photosensitive diode photometric system is used for measuring indoor illuminance; the humidity sensor is used for measuring indoor humidity. The slave machine is respectively connected with the ultrasonic temperature measuring system, the photosensitive diode photometric system and the humidity sensor. The slave machine is used for acquiring the respective measurement data of the ultrasonic temperature measurement system, the photodiode photometric system and the humidity sensor; the measurement data includes an indoor temperature, an indoor illuminance, and an indoor humidity.
The communication module 2 is respectively connected with the slave machine and the host machine in a wireless mode. The slave machine of the signal acquisition module 1 sends the acquired measurement data to the communication module 2, and the communication module 2 transmits the measurement data from the signal acquisition module 1 to the host machine of the execution mechanism 3. The host controls the driving motor to execute corresponding operation according to the measurement data; the corresponding operations include adjusting the blind switch, adjusting the blade angle, and cleaning the blind.
In practical applications, the communication module 2 includes two ultrasonic communication modules, namely a first ultrasonic communication module and a second ultrasonic communication module, and the model of the ultrasonic sensor is HC-SC 04. And the ultrasonic temperature measurement system transmits the collected indoor temperature to a second ultrasonic communication module connected with the host machine for digital amplitude modulation. The host machine is communicated with the driving motor according to the modulated temperature, controls the opening and closing of the blind and the adjustment of the blade angle according to the modulated temperature, and displays the modulated temperature through the display screen.
According to the invention, the STM32 is used as a main control chip, illumination intensity (illumination) is firstly detected, and a photodiode light measuring system is used for detecting the illumination, so that whether the day or the night is distinguished. If the illumination is not in the condition or the illumination does not reach the illumination threshold value, outputting a high level and directly closing the curtain; when the illumination intensity exceeds the illumination threshold value, a low level is output, and the ultrasonic temperature measurement system and the humidity sensor are started to control the indoor temperature and humidity.
As shown in figure 5, the invention adopts an ultrasonic temperature measurement system HC-SR04 to carry out ultrasonic temperature measurement, a temperature value is collected every 1S, an average value is obtained after 10S is collected, ultrasonic communication is carried out after 10S, the temperature value is subjected to digital amplitude modulation (2ASK), the center frequency is 30kHz, the signal is used for driving an ultrasonic transducer of 30kHz to communicate with a host computer, the host computer carries out judgment according to the received temperature value, the opening and closing of a curtain and the adjustment of the blade angle are controlled through ultrasonic waves, and the temperature value is displayed back at the same time.
When the humidity sensor measures that the room is too dry, the humidification nozzles on the blades are controlled to perform humidification treatment; meanwhile, each blade is provided with an electric brush, and the blades are cleaned regularly, so that the defects of inconvenience, time and labor waste and the like of manual curtain cleaning are overcome.
In practical application, the measuring of the indoor temperature by the ultrasonic temperature measuring system specifically comprises: the ultrasonic temperature measuring system sends out ultrasonic waves, the time from emission to return of the ultrasonic waves and the distance from the ultrasonic temperature measuring system to an obstacle are obtained, the ultrasonic speed is determined according to the time and the distance, and the indoor temperature is determined according to the ultrasonic speed.
The ultrasonic temperature measuring system adopts the HC-SR04 ultrasonic module to measure the temperature, firstly, the singlechip P1.0 generates a high level of at least 10 mu s and transmits the high level to the HC-SR04, the HC-SR04 ultrasonic module automatically transmits 8 square wave signals of 40kHz to automatically detect whether the signals return, the output end of the HC-SR04 is connected with the port P3.0 of the singlechip to work in an interruption mode, and when the port P3.0 has high level output and starts to time, and when a down-jump edge appears, the timing is finished. The time at this time is the time t from the transmission of the ultrasonic wave to the return, i.e., a-B-C, as shown in fig. 2. If A, B the distance d is known and the obstacle B is the wall opposite the ultrasonic thermometry system, the velocity can be calculated from the time t
And because the ultrasonic wave speed is greatly influenced by the temperature, the temperature can be accurately calculated according to the speed.
The relationship between the ultrasonic wave speed and the temperature is shown in formula (1):
C＝C0+0.607×T (1)
C0the acoustic velocity at zero degrees is 332m/s, and C is the ultrasonic velocity calculated in real time, i.e., C is V. T is the absolute temperature:
T＝273+T℃ (2)
t ℃ is the temperature in centigrade.
For example, the ultrasonic velocity is 332m/S at 0 ℃ and 350m/S at 30 ℃, and the velocity is increased by 0.607m/S for every 1 ℃ rise in temperature, as is apparent from the formula (1). The single chip microcomputer calculates the speed according to the time value t, then calculates the temperature value according to the formula (1), and converts the temperature value into 8-bit binary number for storage through A/D conversion.
To avoid errors due to a single measurement, multiple measurements may be taken and averaged.
Assuming that the distance between the ultrasonic temperature measurement system and the wall is 4 meters, the speed at absolute zero is 332m/s at minimum, and the time from the emission to the return of the ultrasonic wave is 12 ms; assuming that the high level of HC-SR04 is first generated by monolithic computer P1.0 every 1 second for at least 10 μ s, the time t from transmission to return, A-B-C, is the time.
If the distance d between A, B is known, the obstacle B is the wall opposite to the ultrasonic temperature measuring system, and the speed can be calculated according to the time t
Since the equation (1) shows that the velocity is proportional to the temperature, the velocity at absolute zero is 332m/s and the temperature is found from the equation
Then the temperature value is A/D converted into 8-bit binary value and stored.
The signal obtained by the above method is a binary digital baseband signal, and to realize wireless remote transmission, the digital signal must be modulated, and common digital modulation methods include: amplitude Shift Keying (ASK), Frequency-Shift Keying (FSK), and Phase Shift Keying (PSK).
The center frequency of the ultrasonic probe is fixed, the communication distance is long, and the frequency shift keying mode is not advisable after experimental verification, so the ASK mode is adopted for communication; according to the difference of the values of the digital baseband signals, the digital modulation is divided into binary modulation and multilevel modulation.
The invention adopts binary amplitude keying technology, and the generation method comprises an analog multiplication method and a digital keying method; because the analog phase multiplication circuit is more complicated, in order to reduce the complexity of peripheral circuits, the generation of the delay 2ASK signal is realized by adopting a keying method through a single chip microcomputer software program, and because the carrier frequency of the ultrasonic temperature measurement is lower, the generation of the delay 2ASK carrier frequency is realized by adopting an STM32 timer with higher operability and flexibility, so that digital keying is adopted.
As shown in fig. 3-6, the implementation process of the delay 2ASK modulation is: when transmitting a bit of information "1", the DAC is used to cooperate with the timer to output 5 sine waves with the cycle frequency of 30KHz, and the rest of the time outputs low level. When one bit of information "0" is transmitted, a low level is output, and a timer is turned on for 10 ms.
The principle of binary amplitude keying modulation is known as follows: a binary amplitude keying signal may be derived from the product of a unipolar rectangular pulse sequence and a carrier wave. Therefore, the 2ASK modulation mode can be realized by setting a 2ASK carrier signal.
The carrier signal delayed by 2ASK is shown in fig. 3, and it is assumed that the carrier signal has a cycle of every 10ms, 5 sine waves having a cycle frequency of 30KHz are transmitted at the initial time of each cycle, and no signal is transmitted at the rest of the time.
For example 101101 for a digital baseband signal, the signal waveform delayed by 2ASK is shown in fig. 4.
The ultrasonic wave communication with the host can be realized by the method shown in fig. 5, the center frequency of the generated 2ASK signal is 30kHz, the code element width of the digital baseband signal is 10ms, the code element transmission rate is 100B, and the bandwidth of the 2ASK signal is 200 Hz.
The demodulation mode host computer of the invention adopts the mode of incoherent demodulation to demodulate, the block diagram of the incoherent demodulation is shown in figure 6, and the temperature value can be known through D/A conversion, the host computer judges the temperature value, and then sends out an instruction to the driving motor to carry out the angle modulation or humidification treatment of opening and closing the window and the blade. In order to improve the interference immunity, an orthogonal coding method can be adopted. For example: (0011) windowing, (1100) closing the window, (1010) blade angle modulation, etc.
In order to exchange information between the master machine and the slave machine, a pair of ultrasonic transducers with the resonant frequency of 40kHz can be added, and a digital modulation mode or a pulse width regulation mode can be adopted. Namely, the communication module comprises two ultrasonic communication modules, namely a first ultrasonic communication module and a second ultrasonic communication module. The first ultrasonic communication module is connected with the slave; the second ultrasonic communication module is connected with the host. And the first ultrasonic communication module and the second ultrasonic communication module are in ultrasonic wireless communication. And the slave machine performs digital amplitude modulation on the acquired measurement data through the first ultrasonic communication module and transmits the modulated measurement data to the second ultrasonic communication module. And the second ultrasonic communication module sends the modulated measurement data to the host. And the host controls the opening and closing of the blind curtain, the adjustment of the blade angle and the cleaning of the blind curtain according to the modulated measurement data, and displays the modulated measurement data through the display screen.
In practical application, each blade of the blind is provided with an electric brush and a humidifying nozzle; the electric brush and the humidifying sprayer are respectively connected with the driving motor; when the indoor humidity detected by the humidity sensor is lower than a humidity threshold value, the host machine controls the humidifying spray head to humidify the shutter curtain through the driving motor, and drives the electric brush to clean the shutter curtain through the driving motor.
The blades of each shutter are provided with a humidifying nozzle, the host machine carries out blade cleaning on a signal of the driving motor set at regular time, the time can be set by the single chip microcomputer, meanwhile, a signal can be given by the humidity sensor, and if the humidity is lower than a humidity threshold value, the driving motor can also be driven to carry out blade cleaning. The design has the advantages of convenience and quickness. The humidity threshold is 40% of the standard humidity; the standard humidity is an average humidity of indoor humidity within a time range.
In practical application, the automatic cleaning method is used for completing automatic cleaning through the following steps:
the first step, environment detection, detects indoor temperature and humidity. Earlier through humidity transducer detection room humidity, the detected value is sent to in the machine of following STM32, STM32 is connected with two ultrasonic wave modules, communication ultrasonic wave module (first ultrasonic communication module) and temperature measurement ultrasonic wave module (ultrasonic temperature measurement system), utilizes above-mentioned ultrasonic temperature measurement method, combines STM32 singlechip to measure the temperature to with the temperature value in STM 32.
And in the second step, data communication is carried out. By using the ultrasonic communication method, the communication module is communicated with the slave STM32 and the host computer, and the temperature and humidity data are sent to the host computer.
And thirdly, the host machine determines whether to clean according to the indoor humidity value. When the humidity value is lower than 40% of the standard humidity, starting a cleaning function, and cleaning the curtain while finishing humidity control; and whether the curtain is opened or not is determined according to the indoor temperature value, the sunlight is irradiated in, and if the indoor temperature is lower than 24 ℃, the curtain is opened.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. An automatic cleaning device for a blind curtain is characterized by comprising: the device comprises a signal acquisition module, a communication module and an actuating mechanism; the signal acquisition module comprises an ultrasonic temperature measurement system, a photosensitive diode photometric system, a humidity sensor and a slave machine; the executing mechanism comprises a host, a display screen and a driving motor;
the ultrasonic temperature measuring system is used for measuring indoor temperature; the photosensitive diode photometric system is used for measuring indoor illuminance; the humidity sensor is used for measuring indoor humidity; the slave machine is respectively connected with the ultrasonic temperature measuring system, the photosensitive diode photometric system and the humidity sensor; the slave machine is used for acquiring the respective measurement data of the ultrasonic temperature measurement system, the photodiode photometric system and the humidity sensor; the measurement data comprises indoor temperature, indoor illuminance and indoor humidity; the ultrasonic temperature measurement system collects indoor temperature every 1S, and determines an average temperature value every 10S;
the communication module is respectively in wireless connection with the slave machine and the host machine; the slave machine of the signal acquisition module transmits the acquired measurement data to the communication module, and the communication module transmits the measurement data from the signal acquisition module to the host machine of the execution mechanism; the host controls the driving motor to execute corresponding operation according to the measurement data; the corresponding operation comprises adjusting the shutter switch, adjusting the blade angle and cleaning the shutter; the host machine also regularly gives signals to the driving motor to clean the blades;
each blade of the shutter curtain is provided with an electric brush and a humidifying spray head;
the electric brush and the humidifying sprayer are respectively connected with the driving motor; when the indoor humidity detected by the humidity sensor is lower than a humidity threshold value, the host controls the humidifying spray head to humidify the blind curtain through the driving motor, and drives the electric brush to clean the blind curtain through the driving motor;
the slave machine is used for acquiring the illumination detected by the photodiode photometric system and outputting a high level to close the curtain when the indoor illumination is smaller than an illumination threshold value; and when the indoor illumination is greater than the illumination threshold value, outputting a low level to start the ultrasonic temperature measuring system and the humidity sensor, and controlling the indoor temperature and the indoor humidity.
2. The automatic cleaning device for the venetian blind according to claim 1, wherein the communication module comprises two ultrasonic communication modules, namely a first ultrasonic communication module and a second ultrasonic communication module; the first ultrasonic communication module is connected with the slave; the second ultrasonic communication module is connected with the host; the first ultrasonic communication module and the second ultrasonic communication module are in ultrasonic wireless communication; the slave machine carries out digital amplitude modulation on the acquired measurement data through the first ultrasonic communication module and transmits the modulated measurement data to the second ultrasonic communication module; the second ultrasonic communication module sends the modulated measurement data to the host; and the host controls the opening and closing of the blind curtain, the adjustment of the blade angle and the cleaning of the blind curtain according to the modulated measurement data, and displays the modulated measurement data through the display screen.
3. The automatic cleaning device for window blinds of claim 2, wherein the center frequency of the digital amplitude modulation is 30 kHz.
4. The automatic cleaning device for the blind curtain as claimed in claim 1, wherein the ultrasonic temperature measuring system for measuring the indoor temperature specifically comprises:
the ultrasonic temperature measuring system sends out ultrasonic waves, the time from transmitting to returning of the ultrasonic waves and the distance from the ultrasonic temperature measuring system to an obstacle are obtained, the ultrasonic speed is determined according to the time and the distance, and the indoor temperature is determined according to the ultrasonic speed.
5. The automatic cleaning device for window blinds of claim 1, wherein the humidity threshold is 40% of standard humidity; the standard humidity is an average humidity of indoor humidity within a time range.
6. The automatic cleaning device for the blind curtain as claimed in claim 1, wherein the slave is of the model STM 32.
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| CN205731918U (en) * | 2016-05-19 | 2016-11-30 | 潍坊金昌源电子有限公司 | A kind of ultrasonic generator cleaned for family |
| CN105971477A (en) * | 2016-06-21 | 2016-09-28 | 黄淮学院 | Solar blind window |
| CN207004409U (en) * | 2017-05-31 | 2018-02-13 | 卧槽科技（深圳）有限公司 | A kind of electrically driven curtain control device |
| CN208091586U (en) * | 2018-05-04 | 2018-11-13 | 南京信息工程大学 | A kind of gas temperature measuring system based on ultrasonic technique |
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