CN106642568A - Internet-of-things electric appliance baud rate adjusting method and device and air conditioner - Google Patents

Abstract

The embodiment of the invention discloses a method, a device and an air conditioner for adjusting the baud rate of an Internet of Things appliance. The method includes: collecting a plurality of pulse signals, measuring the width of the pulse signal; processing the pulse signal according to the width to obtain a minimum width, and obtaining the baud rate of the pulse signal according to the minimum width; Adjust the baud rate of itself according to the baud rate of the pulse signal. This method obtains the minimum width by processing the pulse signal sent by the signal sending device, and adjusts its own baud rate according to the baud rate of the pulse signal obtained through the minimum width, so as to realize the automatic control of pulse signals with different baud rates by the Internet of Things appliances. Adaptation, and then realize the loss-free reception of the transmitted data, so that the Internet of Things appliances can correctly respond to user operations, and improve the reliability of the Internet of Things appliances.

Description

A method, device, and air conditioner for adjusting the baud rate of an Internet of Things electrical appliance

technical field

Embodiments of the present invention relate to the technical field of household electrical appliances, and in particular, to a method and device for adjusting the baud rate of an Internet of Things electrical appliance, and an air conditioner.

Background technique

With the development of communication technology, it has become a trend to use wireless communication technology to interconnect air conditioners with mobile terminal smart devices such as mobile phones to form the Internet of Things, and then use mobile terminals to realize remote control of Internet of Things appliances such as air conditioners. Usually, the mobile terminal is connected to the control center at home through the Internet, and the IoT appliances and the control center communicate with each other through serial communication, and the sending rate of the serial communication receiver is only consistent with the sending rate of the sender. Only under the premise that the communication receiver can correctly receive all the data sent by the communication sender.

However, for different types of signal transmitters, the corresponding transmission rate, that is, the baud rate is also different. When the IoT appliance transmits data, there will be problems caused by the mismatch between the wireless signal transmitter and the IoT appliance. Unable to receive the data, resulting in the risk of data loss, which will cause the IoT appliances to fail to correctly respond to the user's operations through the mobile terminal, affecting the user's experience of remote control of the IoT appliances.

Contents of the invention

In view of this, embodiments of the present invention provide a method, device, and air conditioner for adjusting the baud rate of an Internet of Things appliance, so as to achieve the purpose of adaptive adjustment of the Internet of Things appliance to pulse signals with different baud rates.

In the first aspect, an embodiment of the present invention provides a method for adjusting the baud rate of an Internet of Things appliance, including:

collecting a plurality of pulse signals, and measuring the width of the pulse signals;

Processing the pulse signal according to the width to obtain a minimum width, and obtaining a baud rate of the pulse signal according to the minimum width;

Adjust the baud rate of itself according to the baud rate of the pulse signal.

Further, the processing of the pulse signal according to the width to obtain the minimum width includes:

Arranging all pulse signals with unequal widths in ascending order according to the widths;

Subtracting the widths of adjacent pulse signals one by one, re-arranging in ascending order according to the widths of all pulse signals with unequal widths after the subtraction and before the subtraction, to generate a reference pulse signal queue;

The width of the reference pulse signal queue is subtracted one by one and arranged in ascending order according to the width, until the number of pulse signal items in the first reference pulse signal queue generated in the previous time is the same as that in the second reference pulse signal queue generated in the next time;

The width of the pulse signal of the first item in the second reference pulse signal queue is taken as the minimum width.

Further, the processing the pulse signal according to the width to obtain the minimum width also includes:

judging whether the widths of all pulse signals in the second reference pulse signal queue are mutually prime;

Correspondingly, taking the width of the first pulse signal of the second reference pulse signal queue as the minimum width includes:

If the widths of the pulse signals in the second reference pulse signal queue are relatively prime, the width of the first pulse signal after the second reference pulse signal queue is taken as the minimum width.

Further, the method also includes:

If the widths of the pulse signals in the second reference pulse signal queue are non-coprime, re-acquire a plurality of pulse signals, measure the width of the pulse signals, and process the pulse signals according to the width until Widths of the pulse signals in the second reference pulse signal queue are mutually prime.

Further, before adjusting the baud rate of itself according to the baud rate of the pulse signal, it also includes:

Send a confirmation query signal according to the obtained baud rate, and receive a baud rate confirmation response signal.

Further, the baud rate confirmation inquiry signal includes an address inquiry request and a baud rate confirmation request.

In the second aspect, the embodiment of the present invention also provides a device for adjusting the baud rate of an Internet of Things appliance, including:

Width measurement module, for collecting a plurality of pulse signals, measuring the width of the pulse signal;

A baud rate acquisition module, configured to process the pulse signal according to the width to obtain a minimum width, and obtain the baud rate of the pulse signal according to the minimum width;

The baud rate adjustment module is configured to adjust its own baud rate according to the baud rate of the pulse signal.

Further, the baud rate acquisition module is specifically used for:

Arranging all pulse signals with unequal widths in ascending order according to the widths;

Subtracting the widths of adjacent pulse signals one by one, re-arranging in ascending order according to the widths of all pulse signals with unequal widths after the subtraction and before the subtraction, to generate a reference pulse signal queue;

The width of the reference pulse signal queue is subtracted one by one and arranged in ascending order according to the width, until the number of pulse signal items in the first reference pulse signal queue generated in the previous time is the same as that in the second reference pulse signal queue generated in the next time;

The width of the pulse signal of the first item in the second reference pulse signal queue is taken as the minimum width.

Further, the baud rate acquisition module is also specifically used for:

judging whether the widths of all pulse signals in the second reference pulse signal queue are mutually prime;

Correspondingly, taking the width of the first pulse signal of the second reference pulse signal queue as the minimum width includes:

If the widths of the pulse signals in the second reference pulse signal queue are relatively prime, the width of the first pulse signal after the second reference pulse signal queue is taken as the minimum width.

Further, the baud rate acquisition module is also specifically used for:

If the widths of the pulse signals in the second reference pulse signal queue are non-coprime, re-acquire a plurality of pulse signals, measure the width of the pulse signals, and process the pulse signals according to the width until Widths of the pulse signals in the second reference pulse signal queue are mutually prime.

Further, the device also includes:

The baud rate confirmation module is specifically configured to send a confirmation inquiry signal according to the obtained baud rate, and receive a baud rate confirmation response signal.

Further, the baud rate confirmation inquiry signal includes an address inquiry request and a baud rate confirmation request.

In a third aspect, an embodiment of the present invention further provides an air conditioner, including the device for adjusting the baud rate of an Internet of Things appliance provided in the above embodiment.

The embodiment of the present invention provides a method, device, and air conditioner for adjusting the baud rate of an Internet of Things electrical appliance. The minimum width is obtained by processing the pulse signal sent by the signal sending device, and the baud rate of the pulse signal obtained through the minimum width is adjusted. baud rate. It solves the problem that the data cannot be received due to the mismatch between the signal sending device and the baud rate of the IoT appliance, resulting in the loss of the transmitted data, and the problem that the IoT appliance cannot respond to the user's operation correctly, and realizes the pulse signal of the IoT appliance for different baud rates. The self-adaption can realize the loss-free reception of the transmitted data, so that the IoT appliances can correctly respond to user operations, and improve the reliability of the IoT appliances.

Description of drawings

FIG. 1 is a schematic flowchart of a method for adjusting the baud rate of an Internet of Things appliance provided by Embodiment 1 of the present invention.

FIG. 2 is a schematic flowchart of a method for adjusting the baud rate of an Internet of Things appliance provided by Embodiment 2 of the present invention.

FIG. 3 is a schematic structural diagram of a device for adjusting the baud rate of an Internet of Things appliance provided by Embodiment 3 of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Embodiment one

Figure 1 is a schematic flowchart of a method for adjusting the baud rate of an Internet of Things appliance provided by Embodiment 1 of the present invention. The technical solution of this embodiment can be applied to scenarios where the baud rate of an Internet of Things appliance needs to be adjusted, and can be implemented by the present invention The example provides the device for adjusting the baud rate of the Internet of Things appliance. The system can be implemented in the form of software and/or hardware. The device can be integrated into the Internet of Things appliance with the function of adjusting the baud rate, such as an air conditioner. The method includes:

S110, collecting multiple pulse signals, and measuring the width of the pulse signals.

IoT appliances collect multiple pulse signals sent by the signal sending device, and measure the width of the pulse signal. The width of the pulse signal refers to the duration of the high-level pulse in the pulse signal, that is, the rising edge and the next adjacent falling edge of the pulse signal distance between edges. Common baud rates include 4800 baud, 9600 baud, and 19200 baud. From the above, it can be seen that 4800 baud is the basis, and other baud rates are multiples of 4800 baud. Therefore, in the embodiment of the present invention, the width of the pulse signal with a baud rate of 4800 baud is used as the reference unit of width 1, that is, the width of the pulse signal mentioned later is an integer multiple of the width of the pulse signal of 4800 baud. In addition, for example, the signal sending device may be a router or a switch, usually a wireless router, and the signal sending device can send signals in the form of pulses to electrical appliances in the surrounding area, such as electrical appliances of the Internet of Things. It should be noted that when collecting multiple pulse signals, multiple pulse signals may be continuously collected, or multiple continuous pulse signals at different time nodes may be collected, which is not limited in this embodiment of the present invention.

S120, process the pulse signal according to the width to obtain the minimum width, and obtain the baud rate of the pulse signal according to the minimum width.

Process the pulse signal according to the width to obtain the minimum width, the minimum width is the time required to transmit one bit of data in the collected pulse signal, and the baud rate of the pulse signal represents the data transmission rate, that is, the data transmitted per unit time digits.

Optionally, processing the multiple pulse signals collected according to the width may include the following processing operations:

First, arrange all pulse signals with unequal widths in ascending order according to their widths, that is, arrange all pulse signals with unequal widths in ascending order of widths. Exemplarily, the width of the collected pulse signal can be {3, 2, 2, 5, 3, 5, 8, 5}, and the pulse signals with unequal width {3, 2, 5, 8} are sorted in ascending order The pulse signals obtained by permutation are {2, 3, 5, 8}.

Then, the widths of adjacent pulse signals are subtracted one by one, and all pulse signals with unequal widths after the subtraction and before the subtraction are rearranged in ascending order according to the widths to generate a reference pulse signal queue. Exemplarily, there are n pulse signals with unequal widths before the subtraction, and the widths of adjacent pulse signals arranged in ascending order of width are subtracted one by one, that is, the width of the current pulse signal minus the width of the previous pulse signal Width, the n-1 pulse signal is obtained after the subtraction, and the m-item pulse signals with unequal widths in the n-1 pulse signal after the subtraction and the n-item pulse signal before the subtraction are rearranged in ascending order according to the width , generating a queue of reference pulse signals. Exemplarily, taking the pulse signals {2, 3, 5, 8} obtained in the previous step as an example, the widths of adjacent pulse signals are subtracted one by one, and all pulse signals with unequal widths after subtraction and before subtraction are calculated according to The pulse signals obtained by rearranging the widths in ascending order are {1, 2, 3, 5, 8}.

Secondly, the width of the reference pulse signal queue is cyclically subtracted one by one and arranged in ascending order according to the width, until the number of pulse signal items in the first reference pulse signal queue generated in the previous generation is the same as that in the second reference pulse signal queue generated in the subsequent time. Exemplarily, the widths of the m pulse signals in the reference pulse queue formed in the previous step are subtracted one by one, and all pulse signals with unequal widths in the pulse signals before and after the subtraction are arranged in ascending order, And generate a new reference pulse signal queue, and cycle accordingly until the first reference pulse signal queue formed by arranging all pulse signals with unequal widths in ascending order of width after the pth cycle is not equal to all widths of the p+1 cycle The number of pulse signal items in the second reference pulse signal queue formed by arranging the pulse signals in ascending order of width is the same. For example, when the first reference pulse signal queue and the second reference pulse signal queue have pulse signals with q-item widths that are not equal , stop the cycle operation of subtracting the widths one by one and sorting them in ascending order according to the widths. Exemplarily, taking the pulse signal {1, 2, 3, 5, 8} obtained in the previous step as an example, the widths of adjacent pulse signals are subtracted one by one, and all pulses with unequal widths after subtraction and before subtraction The pulse signal obtained by rearranging the signal in ascending order according to the width is still {1, 2, 3, 5, 8}. At this time, the previous first reference pulse signal queue {1, 2, 3, 5, 8} and the subsequent The number of pulse signal items in the second reference pulse signal queue {1, 2, 3, 5, 8} is the same, all of which are 5 items, and then stop the cycle operation of subtracting the width one by one and sorting according to the width ascending order.

Finally, the width of the pulse signal of the first item in the second reference pulse signal queue is taken as the minimum width. Exemplarily, the second reference pulse signal queue with q pulse signals with unequal widths obtained in the above steps is obtained by arranging the pulse signals with q unequal widths in ascending order, so the first in the second reference pulse signal queue The width of the item pulse signal is the smallest, which is taken as the minimum width, so that the minimum width is obtained through the above-mentioned processing of the pulse signal according to the width. Exemplarily, taking the second reference pulse signal queue {1, 2, 3, 5, 8} obtained in the previous step as an example, the width 1 of the first pulse signal in the second reference pulse signal queue is taken as the minimum width.

Due to the pulse signals with unequal widths of q items in the obtained second reference pulse signal queue obtained after p+1 cycles, there may be cases such as {2, 4, 6, 8, 10}, so if the second reference The first item of the pulse signal queue is used as the minimum width, and the baud rate of the pulse signal cannot be obtained according to the first item. Therefore, the pulse signal needs to be processed according to the width to obtain the minimum width. For example, the second reference pulse signal can be judged according to Whether the widths of all pulse signals in the queue are relatively prime determines whether the minimum width is correct. Correspondingly, if the widths of the pulse signals in the second reference pulse signal queue are relatively prime, then the width of the first pulse signal after the second reference pulse signal queue is taken as the minimum width.

Exemplarily, the second reference pulse signal queue obtained after looping p+1 times includes pulse signals with unequal widths arranged in ascending order of q items, but the first pulse signal in the second reference pulse signal queue cannot be directly The width is taken as the minimum width, because the width of the q-item pulse signal in the second reference pulse signal queue may not be mutually prime, that is, the greatest common divisor of the width of the q-item pulse signal is not 1, if the width of the q-item pulse signal When the greatest common divisor of is not 1, the width of the first pulse signal in the second reference pulse signal queue is taken as the minimum width. There may be more than one bit of data contained in the minimum width, so that the acquisition pulse signal cannot be obtained according to the minimum width. baud rate. Therefore, only when the widths of all the pulse signals in the second reference pulse signal queue are relatively prime, the width of the first pulse signal after the second reference pulse signal queue can be taken as the minimum width.

If the width of the pulse signal in the second reference pulse signal queue is non-coprime, then re-gather a plurality of pulse signals, measure the width of the pulse signal, process the pulse signal until the pulse signal in the second reference pulse signal queue The width is relatively prime. Specifically, if the widths of the pulse signals in the second reference pulse signal queue are non-coprime, that is, the greatest common divisor is not 1, then re-acquire a plurality of pulse signals sent by the signal sending device, measure the width of the pulse signals, and compare The pulse signal is processed until the width of the pulse signal in the second reference pulse signal queue is relatively prime, then it is determined that one bit of data has been transmitted in the width of the first pulse signal of the second reference pulse signal queue as the minimum width at this time, and the The width of the pulse signal of the first item in the second reference pulse signal queue is used as the minimum width. In this way, according to whether the widths of all pulse signals in the second reference pulse signal queue are mutually prime, it is determined whether to use the width of the first pulse signal in the second reference queue as the minimum width, so as to avoid the occurrence of special pulse signals generated in some cases. The interference improves the accuracy of the baud rate adjustment device of the Internet of Things electrical appliance to process the pulse signal according to the width to obtain the minimum width, thereby improving the accuracy of obtaining the baud rate of the pulse signal and adjusting the baud rate of the Internet of Things electrical appliance according to the minimum width.

The minimum width has a reciprocal relationship with the baud rate of the pulse signal. If the minimum width is obtained, the baud rate of the pulse signal sent by the signal sending device can be obtained according to the reciprocal relationship.

It should be noted that in the process of obtaining the pulse signal sent by the signal transmitting device according to the reciprocal relationship, there may be errors in the measurement of the width of the pulse signal, resulting in the baud rate of the pulse signal obtained according to the reciprocal relationship based on the minimum width. If there is a certain error, the baud rate of the obtained pulse signal can be compared with 4800 baud, 9600 baud and 19200 baud, and the baud rate of the obtained pulse signal can be adjusted according to the comparison result to eliminate the error.

S130. Adjust the baud rate of itself according to the baud rate of the pulse signal.

Specifically, the baud rate of the pulse signal sent by the signal sending device is obtained by taking the reciprocal of the minimum width obtained in the above steps, and adjusts its own baud rate according to the baud rate of the pulse signal so that the two baud rates match. When the baud rate of the pulse signal sent by the signal sending device changes, the baud rate of the pulse signal can be obtained according to the minimum width, and the baud rate of the IoT appliance can be adjusted according to the baud rate of the pulse signal to complete the wave matching of the IoT appliance. Adaptation of pulse signals with changing baud rates.

In the embodiment of the present invention, the minimum width is obtained by processing the pulse signal sent by the signal sending device, and the baud rate of the IoT appliance is adjusted according to the baud rate of the pulse signal obtained through the minimum width. It solves the problem that the transmission data is lost due to the mismatch between the signal sending device and the baud rate of the IoT appliance, and the IoT appliance cannot respond to user operations correctly, and realizes the self-adaptive adjustment of the IoT appliance to different baud rate pulse signals, which can The lossless reception of transmitted data is realized, so that the Internet of Things appliance can correctly respond to user operations, and the reliability of the work of the Internet of Things appliance is improved.

Embodiment two

Figure 2 is a schematic flow chart of a method for adjusting the baud rate of an Internet of Things appliance provided by Embodiment 2 of the present invention. Based on the foregoing embodiments, the method adds the method of sending a confirmation inquiry signal according to the obtained baud rate and receiving the baud rate. This step confirms the response signal at a high rate.

Correspondingly, the method of the embodiment of the present invention includes:

S210, collecting multiple pulse signals, and measuring the width of the pulse signals.

S220. Process the pulse signal according to the width to obtain the minimum width, and obtain the baud rate of the pulse signal according to the minimum width.

S230. Send a confirmation inquiry signal according to the obtained baud rate, and receive a baud rate confirmation response signal.

Optionally, the baud rate confirmation query signal includes an address query request and a baud rate confirmation request, and the IoT appliance sends a confirmation query signal to the signal sending device to determine whether the currently obtained baud rate is consistent with the baud rate sent by the signal sending device The rate is consistent, and the IP address of the signal sending device is determined according to the address query request, the signal sending device feeds back a baud rate confirmation response signal, and the Internet of Things appliance receives the baud rate confirmation response signal.

S240, adjusting the baud rate of itself according to the baud rate of the pulse signal.

In the embodiment of the present invention, before adjusting the baud rate of the Internet of Things appliance according to the baud rate of the pulse signal, a confirmation inquiry signal is sent according to the baud rate, and a baud rate confirmation response signal is received to confirm the waveform obtained by processing the pulse signal according to the width. The baud rate is matched with the baud rate of the signal sending device, and then the baud rate of the IoT appliance is adjusted according to the obtained baud rate, which improves the accuracy of the adaptation of the IoT appliance to different baud rate pulse signals, and further improves the Reliability of working with networked appliances.

Embodiment three

Fig. 3 is a schematic structural diagram of a device for adjusting the baud rate of an Internet of Things appliance provided by Embodiment 3 of the present invention. The system includes:

Width measurement module 310, is used for collecting a plurality of pulse signals, measures the width of pulse signal;

The baud rate acquisition module 320 is used to process the pulse signal according to the width to obtain the minimum width, and obtain the baud rate of the pulse signal according to the minimum width;

The baud rate adjustment module 330 is configured to adjust its own baud rate according to the baud rate of the pulse signal.

Optionally, the baud rate acquisition module 320 can specifically be used to arrange all pulse signals with unequal widths in ascending order according to their widths; Equal pulse signals are re-arranged in ascending order according to the width to generate a reference pulse signal queue; the width of the reference pulse signal queue is cyclically subtracted one by one and arranged in ascending order according to the width until the first reference pulse signal queue generated in the previous generation and the subsequent generation The number of pulse signal items in the second reference pulse signal queue is the same; the width of the pulse signal of the first item in the second reference pulse signal queue is taken as the minimum width.

Optionally, the baud rate acquisition module 320 may also be specifically configured to determine whether the widths of all pulse signals in the second reference pulse signal queue are mutually prime. Correspondingly, taking the width of the first pulse signal of the second reference pulse signal queue as the minimum width, including if the widths of the pulse signals in the second reference pulse signal queue are mutually prime, then taking the first pulse signal after the second reference pulse signal queue of the width as the minimum width.

Optionally, the baud rate acquisition module 320 can also be specifically used to re-acquire multiple pulse signals if the width of the pulse signals in the second reference pulse signal queue is non-coprime, measure the width of the pulse signals, and compare the pulses according to the width The signals are processed until the widths of the pulse signals in the second reference pulse signal queue are mutually prime.

Optionally, on the basis of the above device, a baud rate confirmation module is further included, which can be specifically configured to send a confirmation inquiry signal according to the obtained baud rate, and receive a baud rate confirmation response signal.

Optionally, the baud rate confirmation inquiry signal includes an address inquiry request and a baud rate confirmation request.

In the embodiment of the present invention, the minimum width is obtained by processing the pulse signal sent by the signal sending device, and the baud rate of the IoT appliance is adjusted according to the baud rate of the pulse signal obtained through the minimum width. It solves the problem that the transmission data is lost due to the mismatch between the signal sending device and the baud rate of the IoT appliance, and the IoT appliance cannot correctly respond to user operations, and realizes the self-adaptation of the IoT appliance to different baud rate pulse signals, and realizes the The lossless reception of the transmitted data enables the IoT appliances to correctly respond to user operations, improving the reliability of the IoT appliances.

An embodiment of the present invention also provides an air conditioner, which may include the device for adjusting the baud rate of the Internet of Things appliance provided in the above embodiments, and may also implement the method for adjusting the baud rate of the Internet of Things appliance provided in any of the above embodiments. Exemplarily, the air conditioner can collect multiple pulse signals sent by the signal sending device, measure the width of the pulse signal, process the pulse signal according to the width to obtain the minimum width and then obtain the baud rate of the pulse signal, and then adjust the air conditioner according to the obtained baud rate The baud rate is the match between its own baud rate and the baud rate of the signal sending device, which realizes the self-adaptation of the air conditioner to pulse signals of different baud rates, realizes the loss-free reception of transmitted data, and enables the air conditioner to respond correctly User operation improves the reliability of the air conditioner.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (13)

1. A method for adjusting the baud rate of an Internet of Things electrical appliance, comprising: collecting a plurality of pulse signals, and measuring the width of the pulse signals; Processing the pulse signal according to the width to obtain a minimum width, and obtaining a baud rate of the pulse signal according to the minimum width; Adjust the baud rate of itself according to the baud rate of the pulse signal. 2. The method according to claim 1, wherein said processing said pulse signal according to said width to obtain a minimum width comprises: Arranging all pulse signals with unequal widths in ascending order according to the widths; Subtracting the widths of adjacent pulse signals one by one, re-arranging in ascending order according to the widths of all pulse signals with unequal widths after the subtraction and before the subtraction, to generate a reference pulse signal queue; The width of the reference pulse signal queue is subtracted one by one and arranged in ascending order according to the width, until the number of pulse signal items in the first reference pulse signal queue generated in the previous time is the same as that in the second reference pulse signal queue generated in the next time; The width of the pulse signal of the first item in the second reference pulse signal queue is taken as the minimum width. 3. The method according to claim 2, wherein said processing said pulse signal according to said width to obtain a minimum width further comprises: judging whether the widths of all pulse signals in the second reference pulse signal queue are mutually prime; Correspondingly, taking the width of the first pulse signal of the second reference pulse signal queue as the minimum width includes: If the widths of the pulse signals in the second reference pulse signal queue are relatively prime, the width of the first pulse signal after the second reference pulse signal queue is taken as the minimum width. 4. The method according to claim 3, further comprising: If the widths of the pulse signals in the second reference pulse signal queue are non-coprime, re-acquire a plurality of pulse signals, measure the width of the pulse signals, and process the pulse signals according to the width until Widths of the pulse signals in the second reference pulse signal queue are mutually prime. 5. The method according to claim 1, wherein, before the baud rate of the pulse signal is adjusted according to the baud rate of the pulse signal, further comprising: Send a confirmation query signal according to the obtained baud rate, and receive a baud rate confirmation response signal. 6. The method according to claim 5, wherein the baud rate confirmation inquiry signal comprises an address inquiry request and a baud rate confirmation request. 7. A device for adjusting the baud rate of an Internet of Things electrical appliance, comprising: Width measurement module, for collecting a plurality of pulse signals, measuring the width of the pulse signal; A baud rate acquisition module, configured to process the pulse signal according to the width to obtain a minimum width, and obtain the baud rate of the pulse signal according to the minimum width; The baud rate adjustment module is configured to adjust its own baud rate according to the baud rate of the pulse signal. 8. The device according to claim 7, wherein the baud rate acquisition module is specifically used for: Arranging all pulse signals with unequal widths in ascending order according to the widths; Subtracting the widths of adjacent pulse signals one by one, re-arranging in ascending order according to the widths of all pulse signals with unequal widths after the subtraction and before the subtraction, to generate a reference pulse signal queue; The width of the reference pulse signal queue is subtracted one by one and arranged in ascending order according to the width, until the number of pulse signal items in the first reference pulse signal queue generated in the previous time is the same as that in the second reference pulse signal queue generated in the next time; The width of the pulse signal of the first item in the second reference pulse signal queue is taken as the minimum width. 9. The device according to claim 8, wherein the baud rate acquisition module is also specifically used for: judging whether the widths of all pulse signals in the second reference pulse signal queue are mutually prime; Correspondingly, taking the width of the first pulse signal of the second reference pulse signal queue as the minimum width includes: If the widths of the pulse signals in the second reference pulse signal queue are relatively prime, the width of the first pulse signal after the second reference pulse signal queue is taken as the minimum width. 10. The device according to claim 9, wherein the baud rate obtaining module is also specifically used for: If the widths of the pulse signals in the second reference pulse signal queue are non-coprime, re-acquire a plurality of pulse signals, measure the width of the pulse signals, and process the pulse signals according to the width until Widths of the pulse signals in the second reference pulse signal queue are mutually prime. 11. The device according to claim 7, further comprising: The baud rate confirmation module is specifically configured to send a confirmation inquiry signal according to the obtained baud rate, and receive a baud rate confirmation response signal. 12. The device according to claim 11, wherein the baud rate confirmation inquiry signal comprises an address inquiry request and a baud rate confirmation request. 13. An air conditioner, comprising: the device for adjusting the baud rate of an Internet of Things appliance according to any one of claims 7-12.