Signal transmission and modulation system based on edge calculation

Abstract

The invention discloses a signal transmission and modulation system based on edge calculation, which relates to the field of signal transmission and modulation and comprises a transmission center in communication connection with a signal acquisition module, a signal modulation module, a transmission channel planning module and a signal demodulation module. Environmental signals in a vegetable greenhouse are collected, the collected environmental signals are modulated to obtain corresponding environmental modulation signals, a transmission channel is arranged to transmit the environmental modulation signals, the transmitted environmental modulation signals are demodulated to obtain original environmental signals, the original environmental signals are sent to a user side, and the modulation effect is evaluated. The transmission integrity of the signal in the channel is ensured, the transmission channel is adjusted according to the actual situation, and the transmission speed of the signal is increased.

Description

Technical Field

[0001] The present invention relates to the field of signal transmission and modulation, and in particular to a signal transmission and modulation system based on edge computing. Background Art

[0002] With the development of society and the improvement of people's living standards, the importance of signal transmission and modulation is the core of information interaction. Without effective signal transmission and modulation technologies, we will not be able to obtain the information we need; In the prior art, the modulation effect is not evaluated, and the integrity of signal transmission in the channel cannot be ensured. The transmission channel is not adjusted according to the actual situation. How to evaluate the modulation effect and adjust the transmission channel according to the actual situation is a problem we need to solve. Therefore, a signal transmission and modulation system based on edge computing is provided herein. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a signal transmission and modulation system based on edge computing.

[0004] The purpose of the present invention can be achieved by the following technical solutions: A signal transmission and modulation system based on edge computing, including a transmission center, which is communicatively connected to a signal acquisition module, a signal modulation module, a transmission channel planning module, and a signal demodulation module; The signal acquisition module is used to acquire the environmental signals in the vegetable greenhouse; The signal modulation module is used to modulate the acquired environmental signals to obtain corresponding environmental modulation signals; The transmission channel planning module is used to plan the transmission channel for the environmental modulation signals and transmit the environmental modulation signals according to the planned transmission channel; The signal demodulation module demodulates the transmitted environmental modulation signals and sends the demodulated environmental modulation signals to the user terminal; Further, the signal acquisition module is composed of a temperature acquisition terminal, a humidity acquisition terminal, and a carbon dioxide concentration acquisition terminal; The environmental signals include temperature signals, humidity signals, and carbon dioxide concentration signals; The temperature acquisition terminal, the humidity acquisition terminal, and the carbon dioxide concentration acquisition terminal are installed in the internal area of the vegetable greenhouse; The temperature signals, humidity signals, and carbon dioxide concentration signals in the internal area of the vegetable greenhouse are respectively obtained through the temperature acquisition terminal, the humidity acquisition terminal, and the carbon dioxide concentration acquisition terminal installed in the internal area of the vegetable greenhouse.

[0005] Further, the process of the signal modulation module modulating the temperature signal in the environmental signal includes: Set a DC bias and a temperature modulation carrier, add the temperature signal to the DC bias, and multiply the added result by the temperature modulation carrier to obtain a temperature modulation signal; Evaluate the modulation effect of the temperature modulation signal, obtain a modulation effect evaluation coefficient of the temperature modulation signal, and set a threshold range of the modulation effect evaluation coefficient; Obtain an evaluation result of the modulation effect of the temperature modulation signal according to the comparison result between the obtained modulation effect evaluation coefficient and the set threshold range of the modulation effect evaluation coefficient; The evaluation result includes that the modulation effect of the temperature modulation signal is unqualified and the modulation effect of the temperature modulation signal is qualified; When the modulation effect of the temperature modulation signal is unqualified, re-modulate the temperature signal, obtain a modulation effect evaluation coefficient of the temperature modulation signal at this time, and adjust the DC bias according to the modulation effect evaluation coefficient of the temperature modulation signal.

[0006] Further, the process of the signal modulation module modulating the humidity signal in the environmental signal includes: Set a humidity modulation carrier, and multiply the humidity signal by the humidity modulation carrier to obtain a humidity modulation signal; Evaluate the modulation effect of the humidity modulation signal, obtain a modulation effect evaluation coefficient of the humidity modulation signal, and set a threshold range of the modulation effect evaluation coefficient; Obtain an evaluation result of the modulation effect of the humidity modulation signal according to the comparison result between the obtained modulation effect evaluation coefficient and the set threshold range of the modulation effect evaluation coefficient; The evaluation result includes that the modulation effect of the humidity modulation signal is unqualified and the modulation effect of the humidity modulation signal is qualified; When the modulation effect of the humidity modulation signal is unqualified, re-modulate the humidity signal, obtain a modulation effect evaluation coefficient of the humidity modulation signal at this time, and adjust the maximum amplitude of the humidity modulation carrier according to the modulation effect evaluation coefficient of the humidity modulation signal.

[0007] Further, the process of the signal modulation module modulating the carbon dioxide concentration signal in the environmental signal includes: Set a carbon dioxide concentration modulation carrier and a band-pass filter, multiply the carbon dioxide concentration signal by the carbon dioxide concentration modulation carrier, and pass the multiplied result through the band-pass filter to obtain a carbon dioxide concentration modulation signal; Evaluate the modulation effect of the carbon dioxide concentration modulation signal, obtain a modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal, and set a threshold range of the modulation effect evaluation coefficient; Obtain the evaluation result of the modulation effect of the carbon dioxide concentration modulation signal according to the comparison result between the obtained modulation effect evaluation coefficient and the set threshold range of the modulation effect evaluation coefficient; The evaluation result includes that the modulation effect of the carbon dioxide concentration modulation signal is unqualified and the modulation effect of the carbon dioxide concentration modulation signal is qualified; When the modulation effect of the carbon dioxide concentration modulation signal is unqualified, re-modulate the carbon dioxide concentration signal, obtain the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal at this time, and adjust the maximum amplitude of the carbon dioxide concentration modulation carrier according to the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal.

[0008] Further, the process of the transmission channel planning module for planning the transmission channel of the environmental modulation signal includes: Set the transmission channel for the temperature modulation signal, the transmission channel for the humidity modulation signal, the transmission channel for the carbon dioxide concentration modulation signal, and the standby transmission channel; Record the maximum amount of information that can be transmitted per second by the transmission channel as the channel capacity, and set the channel capacity of the transmission channel for the temperature modulation signal, the transmission channel for the humidity modulation signal, the transmission channel for the carbon dioxide concentration modulation signal, and the standby transmission channel; Set the monitoring time, and obtain the amount of information of the temperature modulation signal, the amount of information of the humidity modulation signal, and the amount of information of the carbon dioxide concentration modulation signal at each detection time; Adjust the transmission channel according to the amount of information of the obtained temperature modulation signal, the amount of information of the humidity modulation signal, and the amount of information of the carbon dioxide concentration modulation signal.

[0009] Further, the transmission channel for the temperature modulation signal, the transmission channel for the humidity modulation signal, the transmission channel for the carbon dioxide concentration modulation signal, and the standby transmission channel include an open state and a closed state; The initial states of the transmission channel for the temperature modulation signal, the transmission channel for the humidity modulation signal, and the transmission channel for the carbon dioxide concentration modulation signal are in the open state; The initial state of the standby transmission channel is in the closed state.

[0010] Further, the process of the signal demodulation module for demodulating the transmitted environmental modulation signal includes: Set the temperature signal band-pass filter, the humidity signal band-pass filter, the carbon dioxide concentration signal band-pass filter, the temperature signal low-pass filter, the humidity signal low-pass filter, and the carbon dioxide concentration signal low-pass filter; Pass the temperature modulation signal through the temperature signal band-pass filter, multiply the temperature modulation signal passing through the temperature signal band-pass filter by the temperature modulation carrier, and obtain the original temperature signal by passing the multiplied result through the temperature signal low-pass filter; Pass the humidity modulation signal through a humidity signal band-pass filter, multiply the humidity modulation signal passing through the humidity signal band-pass filter by a humidity modulation carrier, and obtain the original humidity signal by passing the multiplication result through a humidity signal low-pass filter; Pass the carbon dioxide concentration modulation signal through a carbon dioxide concentration signal band-pass filter, multiply the carbon dioxide concentration modulation signal passing through the carbon dioxide concentration signal band-pass filter by a carbon dioxide concentration modulation carrier, and obtain the original carbon dioxide concentration signal by passing the multiplication result through a carbon dioxide concentration signal low-pass filter.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: collect the environmental signals in the vegetable greenhouse, modulate the collected environmental signals to obtain corresponding environmental modulation signals, set up a transmission channel to transmit the environmental modulation signals, demodulate the transmitted environmental modulation signals to obtain the original environmental signals, send the original environmental signals to the user side, evaluate the modulation effect, ensure the integrity of the signal transmission in the channel, adjust the transmission channel according to the actual situation, and accelerate the signal transmission speed. Brief Description of the Drawings

[0012] Figure 1 is the schematic diagram of the present invention. Detailed Embodiments

[0013] As Figure 1 shown, a signal transmission and modulation system based on edge computing includes a transmission center, and the transmission center is communicatively connected to a signal acquisition module, a signal modulation module, a transmission channel planning module, and a signal demodulation module; The signal acquisition module is used to collect the environmental signals in the vegetable greenhouse; It should be further noted that, in the specific implementation process, the signal acquisition module is composed of a temperature acquisition terminal, a humidity acquisition terminal, and a carbon dioxide concentration acquisition terminal; The environmental signals include temperature signals, humidity signals, and carbon dioxide concentration signals; The temperature acquisition terminal is used to collect the temperature signals in the vegetable greenhouse, the humidity acquisition terminal is used to collect the humidity signals in the vegetable greenhouse, and the carbon dioxide concentration acquisition terminal is used to collect the carbon dioxide concentration signals in the vegetable greenhouse; Install the temperature acquisition terminal, the humidity acquisition terminal, and the carbon dioxide concentration acquisition terminal in the internal area of the vegetable greenhouse; The temperature acquisition terminal, humidity acquisition terminal, and carbon dioxide concentration acquisition terminal installed in the internal area of the vegetable greenhouse are used to obtain the temperature signal, humidity signal, and carbon dioxide concentration signal of the internal area of the vegetable greenhouse respectively. The obtained temperature signal, humidity signal, and carbon dioxide concentration signal of the internal area of the vegetable greenhouse are denoted as T(t), S(t), and E(t) respectively.

[0014] The signal modulation module is used to modulate the acquired environmental signal to obtain a corresponding environmental modulation signal; It should be further noted that in the specific implementation process, the process of the signal modulation module modulating the acquired environmental signal includes: Modulating the environmental signal step by step; First, modulate the temperature signal, set the DC bias, denoted as A0, and A0 ≥ |T(t)|max, where |T(t)|max represents the maximum amplitude in T(t). Set the temperature modulation carrier, denoted as cosw1t; Modulate the temperature signal through the set DC bias and temperature modulation carrier. Add the temperature signal to the DC bias, and multiply the added result by the temperature modulation carrier to obtain the temperature modulation signal, denoted as TW(t); Where, TW(t) = [A0 + T(t)] * cosw1t = A0 * cosw1t + T(t) * cosw1t; Evaluate the modulation effect of the temperature modulation signal, and set the modulation effect evaluation coefficient of the temperature modulation signal, denoted as TP; Where, TP = |T(t)|max / A0; Set the threshold range of the modulation effect evaluation coefficient of the temperature modulation signal, denoted as (TP0, TP1); When TP ≤ TP0, the modulation effect of the temperature modulation signal is unqualified; When TP0 < TP < TP1, the modulation effect of the temperature modulation signal is qualified; When TP ≥ TP1, the modulation effect of the temperature modulation signal is unqualified; When the modulation effect of the temperature modulation signal is unqualified, re-modulate the temperature signal, and obtain the modulation effect evaluation coefficient of the temperature modulation signal at this time. If TP ≤ TP0 at this time, lower the DC bias A0. If TP ≥ TP1 at this time, raise the DC bias A0; After the temperature signal modulation is completed, modulate the humidity signal, and set the humidity modulation carrier, denoted as cosw2t; Modulate the humidity signal through the set humidity modulation carrier, and multiply the humidity signal by the humidity modulation carrier to obtain the humidity modulation signal, denoted as SW(t); Among them, SW(t) = S(t) * cosw2t; Evaluate the modulation effect of the humidity modulation signal, set the modulation effect evaluation coefficient of the humidity modulation signal, denoted as SP; Among them, SP = |S(t)|max / |cosw2t|max, and |cosw2t|max represents the maximum amplitude in cosw2t; Set the threshold range of the modulation effect evaluation coefficient of the humidity modulation signal, denoted as (SP0, SP1); When SP ≤ SP0, the modulation effect of the humidity modulation signal is unqualified; When SP0 < SP < SP1, the modulation effect of the humidity modulation signal is qualified; When SP ≥ SP1, the modulation effect of the humidity modulation signal is unqualified; When the modulation effect of the humidity modulation signal is unqualified, re-modulate the humidity signal, obtain the modulation effect evaluation coefficient of the humidity modulation signal at this time. If SP ≤ SP0 at this time, lower the maximum amplitude of the humidity modulation carrier. If SP ≥ SP1 at this time, increase the maximum amplitude of the humidity modulation carrier; After the humidity signal modulation is completed, modulate the carbon dioxide concentration signal. Set the carbon dioxide concentration modulation carrier, denoted as cosw3t, and set the band-pass filter, denoted as H1(W); Modulate the carbon dioxide concentration signal through the set carbon dioxide concentration modulation carrier and band-pass filter. Multiply the carbon dioxide concentration signal by the carbon dioxide concentration modulation carrier, and obtain the carbon dioxide concentration modulation signal by passing the multiplication result through the band-pass filter, denoted as EW(t); Among them, EW(t) = E(t) * cosw3t; Evaluate the modulation effect of the carbon dioxide concentration modulation signal, set the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal, denoted as EP; Among them, EP = |E(t)|max / |cosw3t|max, and |cosw3t|max represents the maximum amplitude in cosw3t; Set the threshold range of the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal, denoted as (EP0, EP1); When EP ≤ EP0, the modulation effect of the carbon dioxide concentration modulation signal is unqualified; When EP0 < EP < EP1, the modulation effect of the carbon dioxide concentration modulation signal is qualified; When EP ≥ EP1, the modulation effect of the carbon dioxide concentration modulation signal is unqualified; When the modulation effect of the carbon dioxide concentration modulation signal is unqualified, the carbon dioxide concentration signal is re-modulated, and the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal at this time is obtained. If the EP at this time is ≤ EP0, the maximum amplitude of the carbon dioxide concentration modulation carrier is lowered. If the EP at this time is ≥ EP1, the maximum amplitude of the carbon dioxide concentration modulation carrier is increased; The environmental signal is gradually modulated to make the environmental modulation signal more accurate and capable of being transmitted through the transmission channel simultaneously, so that the client can receive the temperature signal, humidity signal, and carbon dioxide concentration signal simultaneously.

[0015] The transmission channel planning module is used to plan the transmission channel for the environmental modulation signal and transmit the environmental modulation signal according to the planned transmission channel; It should be further noted that in the specific implementation process, the process of the transmission channel planning module planning the transmission channel for the environmental modulation signal includes: Set up the temperature modulation signal transmission channel, humidity modulation signal transmission channel, carbon dioxide concentration modulation signal transmission channel, and standby transmission channel; The temperature modulation signal transmission channel is used to transmit the temperature modulation signal, the humidity modulation signal transmission channel is used to transmit the humidity modulation signal, and the carbon dioxide concentration modulation signal transmission channel is used to transmit the carbon dioxide concentration modulation signal; The temperature modulation signal transmission channel, humidity modulation signal transmission channel, carbon dioxide concentration modulation signal transmission channel, and standby transmission channel include an open state and a closed state; The initial states of the temperature modulation signal transmission channel, humidity modulation signal transmission channel, and carbon dioxide concentration modulation signal transmission channel are in the open state; The initial state of the standby transmission channel is in the closed state; Record the maximum amount of information that the channel can transmit per second as the channel capacity. Set the channel capacities of the temperature modulation signal transmission channel, humidity modulation signal transmission channel, and carbon dioxide concentration modulation signal transmission channel, denoted as XR1, and set the channel capacity of the standby transmission channel, denoted as XR2; Among them, XR2 > XR1; Set the monitoring time, denoted as i, i = 1, 2, 3, ……, n, where n is a positive integer and n ≥ 1. Obtain the amount of information of the temperature modulation signal, humidity modulation signal, and carbon dioxide concentration modulation signal at each detection time; If the amount of information of the temperature modulation signal is greater than the channel capacity of the temperature modulation signal transmission channel, the standby transmission channel is opened, and the standby channel and the temperature modulation signal transmission channel are used to transmit the temperature modulation signal simultaneously; If the information amount of the humidity modulation signal is greater than the channel capacity of the humidity modulation signal transmission channel, the standby transmission channel is activated, and the humidity modulation signal is transmitted using both the standby channel and the humidity modulation signal transmission channel; If the information amount of the carbon dioxide concentration modulation signal is greater than the channel capacity of the carbon dioxide concentration modulation signal transmission channel, the standby transmission channel is activated, and the carbon dioxide concentration modulation signal is transmitted using both the standby channel and the carbon dioxide concentration modulation signal transmission channel; If the information amounts of the temperature modulation signal, the humidity modulation signal, and the carbon dioxide concentration modulation signal are respectively greater than the channel capacities of the temperature modulation signal transmission channel, the humidity modulation signal transmission channel, and the carbon dioxide concentration modulation signal transmission channel at the same time, the standby transmission channel is activated, and the temperature modulation signal is transmitted using both the standby channel and the temperature modulation signal transmission channel, the humidity modulation signal is transmitted using both the standby channel and the humidity modulation signal transmission channel, and the carbon dioxide concentration modulation signal is transmitted using both the standby channel and the carbon dioxide concentration modulation signal transmission channel; The signal demodulation module demodulates the transmitted environmental modulation signal and sends the demodulated environmental modulation signal to the user terminal; It should be further noted that in the specific implementation process, the process of the signal demodulation module demodulating the transmitted environmental modulation signal includes: Set a temperature signal band-pass filter, a humidity signal band-pass filter, a carbon dioxide concentration signal band-pass filter, a temperature signal low-pass filter, a humidity signal low-pass filter, and a carbon dioxide concentration signal low-pass filter; Pass the temperature modulation signal through the temperature signal band-pass filter, multiply the temperature modulation signal passing through the temperature signal band-pass filter by cosw1t, and obtain the original temperature signal by passing the multiplied result through the temperature signal low-pass filter; Pass the humidity modulation signal through the humidity signal band-pass filter, multiply the humidity modulation signal passing through the humidity signal band-pass filter by cosw2t, and obtain the original humidity signal by passing the multiplied result through the humidity signal low-pass filter; Pass the carbon dioxide concentration modulation signal through the carbon dioxide concentration signal band-pass filter, multiply the carbon dioxide concentration modulation signal passing through the carbon dioxide concentration signal band-pass filter by cosw3t, and obtain the original carbon dioxide concentration signal by passing the multiplied result through the carbon dioxide concentration signal low-pass filter.

[0016] The above embodiments are only used to illustrate the technical method of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A signal transmission and modulation system based on edge computing, comprising a transmission center, characterized in that: The transmission center is communicatively connected with a signal acquisition module, a signal modulation module, a transmission channel planning module, and a signal demodulation module; The signal acquisition module is used to collect environmental signals in the vegetable greenhouse; The signal modulation module is used to modulate the collected environmental signal to obtain a corresponding environmental modulation signal; The transmission channel planning module is used to plan the transmission channel for the environmental modulation signal and transmit the environmental modulation signal according to the planned transmission channel; The signal demodulation module demodulates the transmitted environmental modulation signal and sends the demodulated environmental modulation signal to the user end.

2. The signal transmission and modulation system based on edge computing according to claim 1, characterized in that: The signal acquisition module is composed of a temperature acquisition terminal, a humidity acquisition terminal and a carbon dioxide concentration acquisition terminal; The environmental signals include temperature signals, humidity signals and carbon dioxide concentration signals; Install the temperature collection terminal, humidity collection terminal and carbon dioxide concentration collection terminal in the inner area of ​​the vegetable greenhouse; The temperature signal, humidity signal and carbon dioxide concentration signal of the inner area of ​​the vegetable greenhouse are obtained respectively through the temperature collection terminal, humidity collection terminal and carbon dioxide concentration collection terminal installed in the inner area of ​​the vegetable greenhouse.

3. The signal transmission and modulation system based on edge computing according to claim 2, characterized in that: The process of the signal modulation module modulating the temperature signal in the ambient signal includes: Set a DC bias and a temperature modulation carrier, add the temperature signal to the DC bias, and multiply the result of the addition by the temperature modulation carrier to obtain a temperature modulation signal; Evaluate the modulation effect of the temperature modulation signal, obtain the modulation effect evaluation coefficient of the temperature modulation signal, and set the modulation effect evaluation coefficient threshold range; Obtaining an evaluation result of the modulation effect of the temperature modulation signal according to a comparison result of the obtained modulation effect evaluation coefficient and a set modulation effect evaluation coefficient threshold range; The evaluation result includes whether the modulation effect of the temperature modulation signal is unqualified or the modulation effect of the temperature modulation signal is qualified; When the modulation effect of the temperature modulation signal is unqualified, the temperature signal is re-modulated to obtain the modulation effect evaluation coefficient of the temperature modulation signal at this time, and the DC bias is adjusted according to the modulation effect evaluation coefficient of the temperature modulation signal.

4. The signal transmission and modulation system based on edge computing according to claim 3, characterized in that: The process of the signal modulation module modulating the humidity signal in the environmental signal includes: Set the humidity modulation carrier, and multiply the humidity signal by the humidity modulation carrier to obtain the humidity modulation signal; Evaluate the modulation effect of the humidity modulation signal, obtain the modulation effect evaluation coefficient of the humidity modulation signal, and set the modulation effect evaluation coefficient threshold range; Obtaining an evaluation result of the modulation effect of the humidity modulation signal according to a comparison result of the obtained modulation effect evaluation coefficient and a set modulation effect evaluation coefficient threshold range; The evaluation result includes whether the modulation effect of the humidity modulation signal is unqualified or the modulation effect of the humidity modulation signal is qualified; When the modulation effect of the humidity modulation signal is unqualified, the humidity signal is remodulated to obtain the modulation effect evaluation coefficient of the humidity modulation signal at this time, and the maximum amplitude of the humidity modulation carrier is adjusted according to the modulation effect evaluation coefficient of the humidity modulation signal.

5. The signal transmission and modulation system based on edge computing according to claim 4, characterized in that: The process of the signal modulation module modulating the carbon dioxide concentration signal in the environmental signal includes: Setting a carbon dioxide concentration modulated carrier and a bandpass filter, multiplying the carbon dioxide concentration signal by the carbon dioxide concentration modulated carrier, and passing the multiplication result through the bandpass filter to obtain a carbon dioxide concentration modulated signal; Evaluate the modulation effect of the carbon dioxide concentration modulation signal, obtain a modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal, and set a threshold range of the modulation effect evaluation coefficient; Obtaining an evaluation result of the modulation effect of the carbon dioxide concentration modulation signal according to a comparison result of the obtained modulation effect evaluation coefficient and a set threshold range of the modulation effect evaluation coefficient; The evaluation result includes whether the modulation effect of the carbon dioxide concentration modulation signal is unqualified or the modulation effect of the carbon dioxide concentration modulation signal is qualified; When the modulation effect of the carbon dioxide concentration modulation signal is unqualified, the carbon dioxide concentration signal is remodulated to obtain the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal at this time, and the maximum amplitude of the carbon dioxide concentration modulation carrier is adjusted according to the modulation effect evaluation coefficient of the carbon dioxide concentration modulation signal.

6. The signal transmission and modulation system based on edge computing according to claim 5, characterized in that: The process of the transmission channel planning module performing transmission channel planning on the environmental modulation signal includes: Setting a temperature modulation signal transmission channel, a humidity modulation signal transmission channel, a carbon dioxide concentration modulation signal transmission channel and a standby transmission channel; The maximum amount of information that can be transmitted per second by the transmission channel is recorded as the channel capacity, and the channel capacities of the temperature modulation signal transmission channel, the humidity modulation signal transmission channel, the carbon dioxide concentration modulation signal transmission channel and the standby transmission channel are set; Set the monitoring time and obtain the information amount of the temperature modulation signal, the humidity modulation signal and the carbon dioxide concentration modulation signal at each detection time; The transmission channel is adjusted according to the information amount of the acquired temperature modulation signal, the information amount of the humidity modulation signal and the information amount of the carbon dioxide concentration modulation signal.

7. The signal transmission and modulation system based on edge computing according to claim 6, characterized in that: The temperature modulation signal transmission channel, the humidity modulation signal transmission channel, the carbon dioxide concentration modulation signal transmission channel and the standby transmission channel include an open state and a closed state; The initial states of the temperature modulation signal transmission channel, the humidity modulation signal transmission channel and the carbon dioxide concentration modulation signal transmission channel are an open state; The initial state of the standby transmission channel is a closed state.

8. The signal transmission and modulation system based on edge computing according to claim 6, characterized in that: The process of the signal demodulation module demodulating the transmitted environmental modulation signal includes: Set the temperature signal bandpass filter, humidity signal bandpass filter, carbon dioxide concentration signal bandpass filter, temperature signal low-pass filter, humidity signal low-pass filter, carbon dioxide concentration signal low-pass filter; Pass the temperature modulated signal through a temperature signal bandpass filter, multiply the temperature modulated signal passing through the temperature signal bandpass filter by the temperature modulated carrier, and pass the multiplication result through a temperature signal low-pass filter to obtain the original temperature signal; The humidity modulated signal is passed through a humidity signal bandpass filter, the humidity modulated signal that has passed through the humidity signal bandpass filter is multiplied by the humidity modulated carrier, and the multiplication result is passed through a humidity signal low-pass filter to obtain the original humidity signal; The carbon dioxide concentration modulated signal is passed through a carbon dioxide concentration signal bandpass filter, the carbon dioxide concentration modulated signal that has passed through the carbon dioxide concentration signal bandpass filter is multiplied by a carbon dioxide concentration modulated carrier, and the multiplication result is passed through a carbon dioxide concentration signal low-pass filter to obtain an original carbon dioxide concentration signal.

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