Same-frequency opposite transmission valve based on switching value and analog quantity

Abstract

The same-frequency opposite-transmission valve based on the switching value and the analog quantity comprises a valve body and further comprises a LoRa communication module used for receiving and demodulating a first radio frequency signal from external equipment so as to obtain a control instruction; wherein the first radio frequency signal is obtained by modulating a switching value and an analog quantity; the processor is also used for receiving the second radio frequency signal of the state acquisition module and sending the second radio frequency signal to external equipment; the action module is connected with the valve body and used for receiving the control instruction and controlling the valve body to act according to the control instruction; and the state acquisition module is used for acquiring the real-time state of the valve main body and modulating the real-time state into a second radio frequency signal. According to the same-frequency opposite-transmission valve, remote control over the valve is achieved through the LoRa communication technology, and the requirement for remote control over the valve in a scene with poor communication signals can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial control, and in particular relates to a same-frequency counter-transmission valve based on switch quantity and analog quantity. Background Art

[0002] A valve is a device used to control the flow of fluids (including gas, liquid, powder, etc.) in pipes or equipment. Valves play an important role in many fields such as industry and civil use. At present, there are two main methods for industrial management to control valves:

[0003] 1) Manual control. The staff goes to the site to manually open and close the control valve. The disadvantage is that the labor cost is high and the control efficiency is low.

[0004] 2) Remote control. Use 4G, WIFI, Bluetooth and other communication technologies to remotely control valve opening and closing. Its advantage is that it does not require staff to be on site, reducing labor costs, and can control the valve in the first place, with high management efficiency. However, the existing remote control method is still not suitable for scenarios with poor communication signals. Summary of the invention

[0005] In view of the defects in the prior art, the present invention provides a same-frequency transmission valve based on switch quantity and analog quantity, which can meet the demand for remote control of the valve in the scenario of poor communication signal.

[0006] A same-frequency counter-transmission valve based on switch quantity and analog quantity includes a valve body, including:

[0007] LoRa communication module: used to receive and demodulate the first radio frequency signal from the external device to obtain the control instruction; wherein the first radio frequency signal is modulated according to the switch quantity and the analog quantity; and also used to receive the second radio frequency signal of the state acquisition module and send the second radio frequency signal to the external device;

[0008] Action module: connected to the valve body, the action module is used to receive control instructions and control the action of the valve body according to the control instructions;

[0009] State acquisition module: used to acquire the real-time state of the valve body and modulate the real-time state into a second radio frequency signal.

[0010] Furthermore, the first radio frequency signal obtained by switching quantity modulation is used to control the valve body to open or close; the first radio frequency signal obtained by analog quantity modulation is used to control the valve body to open to a specified opening angle or a specified opening and closing percentage.

[0011] Furthermore, the state acquisition module includes an angle sensor disposed on the valve body; the angle sensor is used to convert the detection signal into an analog quantity and then output it;

[0012] The status of the valve body includes open and open angle and opening percentage, or closed.

[0013] Furthermore, the external device includes:

[0014] Visualization module: a visualization interface is provided; a valve map is provided on the visualization interface; the valve map is used to display the layout of all the same-frequency counter-transmission valves in the industrial site. When a same-frequency counter-transmission valve is selected in the valve map, the real-time status of the selected same-frequency counter-transmission valve is displayed through a pop-up window; the real-time status is obtained by demodulating the second radio frequency signal.

[0015] Furthermore, the real-time status of the same-frequency counter-transmission valve includes closing, opening angle or opening percentage.

[0016] Furthermore, the action module is specifically used for:

[0017] Convert control instructions into digital signals;

[0018] When it is detected that the frequency of the digital signal is the first frequency and contains N continuous pulses, the valve body is controlled to open; the default opening angle or opening percentage is 100%;

[0019] When it is detected that the frequency of the digital signal is the first frequency and contains M continuous pulses, the valve body is controlled to close;

[0020] When it is detected that the frequency of the digital signal is not the first frequency, the frequency control table is queried according to the frequency of the digital signal to obtain the opening angle or opening percentage, and the valve is controlled to open to the opening angle or opening percentage; wherein the frequency control table contains different frequencies and corresponding opening angles or opening percentages.

[0021] Furthermore, the status acquisition module is specifically used for:

[0022] When it is detected that the valve body is closed, a digital signal having a first frequency and comprising M continuous pulses is generated, and the digital signal is modulated into a second radio frequency signal;

[0023] When it is detected that the valve body is opened, the opening angle or opening percentage of the valve body is collected, and the frequency control table is queried according to the collected opening angle or opening percentage to obtain the corresponding frequency, generate a digital signal of the corresponding frequency, and modulate the digital signal into a second radio frequency signal.

[0024] Furthermore, after displaying the real-time status of the selected same-frequency counter-transmission valve through a pop-up window, the visualization module is also used to:

[0025] Set the close button, open button and opening angle setting box in the pop-up window;

[0026] When it is detected that the close button is triggered, a digital signal having a first frequency and comprising M continuous pulses is generated, and the digital signal is modulated into a first radio frequency signal;

[0027] When it is detected that the open button is triggered, a digital signal having a first frequency and comprising N continuous pulses is generated, and the digital signal is modulated into a first radio frequency signal;

[0028] When it is detected that the opening angle setting box is filled with the opening angle or the opening percentage, the frequency control table is queried to obtain the corresponding frequency, an analog signal of the corresponding frequency is generated, and the analog signal is modulated into a first radio frequency signal.

[0029] Furthermore, the visualization module is also used to:

[0030] Save the control instructions and real-time status of all valves transmitting in the same frequency in the valve map;

[0031] When the control command is inconsistent with the real-time status, an alarm will be given to the valve with the same frequency transmission.

[0032] It can be seen from the above technical solution that the same-frequency transmission valve based on switching quantity and analog quantity provided by the present invention realizes remote control of the valve through LoRa communication technology, which can meet the demand for remote control of the valve in scenarios with poor communication signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0034] Figure 1 A module block diagram of a same-frequency counter-transmission valve provided in an embodiment. DETAILED DESCRIPTION

[0035] The embodiments of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and the protection scope of the present invention cannot be limited thereto. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should be the common meanings understood by those skilled in the art to which the present invention belongs.

[0036] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0037] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0038] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0039] Example:

[0040] A valve based on switching quantity and analog quantity with the same frequency transmission, including a valve body, see Figure 1 ,include:

[0041] LoRa communication module: used to receive and demodulate the first radio frequency signal from the external device to obtain the control instruction; wherein the first radio frequency signal is modulated according to the switch quantity and the analog quantity; and also used to receive the second radio frequency signal of the state acquisition module and send the second radio frequency signal to the external device;

[0042] Action module: connected to the valve body, the action module is used to receive control instructions and control the action of the valve body according to the control instructions;

[0043] State acquisition module: used to acquire the real-time state of the valve body and modulate the real-time state into a second radio frequency signal.

[0044] In this embodiment, the valve body can be a stop valve, a ball valve, a butterfly valve, a gate valve or the like. The LoRa communication module can realize the LoRa communication between the valve and the external device at the same frequency. Since LoRa communication has strong anti-interference ability, it can be applied to scenes with poor communication signals, such as deserts, oceans, remote mountainous areas, etc., so that remote control of valves can be realized in these scenes. When it is necessary to control the action of the valve, the staff can send a first radio frequency signal through an external device. The first radio frequency signal is a signal obtained by modulating the switch quantity and analog quantity based on the LoRa communication principle.

[0045] In this embodiment, after receiving the first radio frequency signal, the LoRa communication module demodulates the first radio frequency signal based on the LoRa communication principle to obtain a control instruction. The control instruction is mainly used to control the valve body to close, open, or open to a specified opening angle or opening percentage. After receiving the control instruction, the action module controls the action of the valve body according to the control instruction, thereby completing the remote control of the valve body.

[0046] In this embodiment, in addition to the remote control function, the same-frequency transmission valve can also collect and report the real-time status of the valve body. The real-time status of the valve body includes opening and opening angle or opening percentage, or closing. The status acquisition module modulates the collected real-time status into a second radio frequency signal, and then sends it to the external device through the LoRa communication module, so that the external device can know the status of the valve body in all the same-frequency transmission valves in the industrial site in a timely manner, and better assist the staff in managing all the same-frequency transmission valves in the industrial site.

[0047] This same-frequency transmission valve based on switch quantity and analog quantity realizes remote control of the valve through LoRa communication technology, which can meet the needs of remote control of the valve in scenarios with poor communication signals.

[0048] Furthermore, in some embodiments, the first RF signal obtained by switching quantity modulation is used to control the valve body to open or close; the first RF signal obtained by analog quantity modulation is used to control the valve body to open to a specified opening angle or a specified opening percentage.

[0049] In this embodiment, the same frequency counter-transmission valve can control the opening or closing of the valve body through the switch quantity, which is a digital signal. The opening angle of the valve body is controlled by the analog quantity, for example, the valve body is controlled to open to 10%, 30%, 70%, 100%, etc. through the analog quantity.

[0050] Furthermore, in some embodiments, the state acquisition module includes an angle sensor disposed on the valve body. The angle sensor is used to convert the detection signal into an analog quantity and then output it.

[0051] In this embodiment, the same frequency counter-transmission valve collects the real-time status through the angle sensor set on the valve body. The angle sensor can be installed on the rotating shaft of the valve body. When the rotating shaft rotates to different angles, the valve body opens to the corresponding angle, and the resistance value in the angle sensor changes, so that the real-time status of the valve body can be detected by the angle sensor.

[0052] Further, in some embodiments, the external device includes:

[0053] Visualization module: a visualization interface is provided; a valve map is provided on the visualization interface; the valve map is used to display the layout of all the same-frequency counter-transmission valves in the industrial site. When a same-frequency counter-transmission valve is selected in the valve map, the real-time status of the selected same-frequency counter-transmission valve is displayed through a pop-up window; the real-time status is obtained by demodulating the second radio frequency signal.

[0054] In this embodiment, after the external device receives the second radio frequency signal, it can demodulate the second radio frequency signal and visualize the obtained real-time status of the valve body, so that the staff can directly view the real-time status of each same-frequency counter-transmission valve at the industrial site. The valve map contains the layout of all same-frequency counter-transmission valves at the industrial site, that is, the location of all same-frequency counter-transmission valves at the industrial site. When the staff wants to view the real-time status of a same-frequency counter-transmission valve, select the same-frequency counter-transmission valve in the valve map, and the visualization interface will display the real-time status of the same-frequency counter-transmission valve through a pop-up window. The real-time status of the same-frequency counter-transmission valve includes closed, open angle or opening percentage.

[0055] Furthermore, in some embodiments, the action module is specifically used to:

[0056] Convert control instructions into digital signals;

[0057] When it is detected that the frequency of the digital signal is the first frequency and contains N continuous pulses, the valve body is controlled to open; the default opening angle or opening percentage is 100%;

[0058] When it is detected that the frequency of the digital signal is the first frequency and contains M continuous pulses, the valve body is controlled to close;

[0059] When it is detected that the frequency of the digital signal is not the first frequency, the frequency control table is queried according to the frequency of the digital signal to obtain the opening angle or opening percentage, and the valve is controlled to open to the opening angle or opening percentage; wherein the frequency control table contains different frequencies and corresponding opening angles or opening percentages.

[0060] In this embodiment, the action module controls the valve body action including the following situations:

[0061] 1) When the frequency of the digital signal is the first frequency A and contains N continuous pulses, the valve body is controlled to open to 100%. When the action module detects the number of continuous pulses, if a rising edge is detected, the number of continuous pulses is increased by 1. When no rising edge is detected within 1 / A time, the pulse detection is stopped. When the number of continuous pulses is equal to N, the valve body is controlled to open to 100%.

[0062] 2) When the frequency of the digital signal is the first frequency A and contains M continuous pulses, the valve body is controlled to be closed. When the number of continuous pulses is equal to M, the action module controls the valve body to be closed.

[0063] 3) When the frequency of the digital signal is not the first frequency A, the valve body is controlled to open to a specified opening angle or opening percentage according to the frequency of the digital signal. The action module first sets a frequency control table, which includes multiple frequencies and corresponding opening angles or opening percentages. For example, the frequency control table includes frequency B and an opening angle or opening percentage of 30%, frequency C and an opening angle or opening percentage of 50%, frequency D and an opening angle or opening percentage of 70%, etc. In this way, when the frequency of the digital signal is frequency C, the valve is controlled to open to 50%.

[0064] Furthermore, in some embodiments, the state acquisition module is specifically used to:

[0065] When it is detected that the valve body is closed, a digital signal having a first frequency and comprising M continuous pulses is generated, and the digital signal is modulated into a second radio frequency signal;

[0066] When it is detected that the valve body is opened, the opening angle or opening percentage of the valve body is collected, and the frequency control table is queried according to the collected opening angle or opening percentage to obtain the corresponding frequency, generate a digital signal of the corresponding frequency, and modulate the digital signal into a second radio frequency signal.

[0067] In this embodiment, when the state acquisition module generates the second radio frequency signal, there are the following two situations:

[0068] 1) When the valve body is closed, a digital signal having a first frequency A and containing M continuous pulses is generated, and the digital signal is modulated to obtain a second radio frequency signal.

[0069] 2) When the valve body is opened, a digital signal of a corresponding frequency is generated according to the opening angle or opening percentage of the valve body. For example, when the opening angle or opening percentage of the valve body is 70%, a digital signal of frequency D is generated and modulated to obtain a second radio frequency signal.

[0070] Furthermore, in some embodiments, after displaying the real-time status of the selected same-frequency counter-transmission valve through a pop-up window, the visualization module is further used to:

[0071] Set the close button, open button and opening angle setting box in the pop-up window;

[0072] When it is detected that the close button is triggered, a digital signal having a first frequency and comprising M continuous pulses is generated, and the digital signal is modulated into a first radio frequency signal;

[0073] When it is detected that the open button is triggered, a digital signal having a first frequency and comprising N continuous pulses is generated, and the digital signal is modulated into a first radio frequency signal;

[0074] When it is detected that the opening angle setting box is filled with the opening angle or the opening percentage, the frequency control table is queried to obtain the corresponding frequency, an analog signal of the corresponding frequency is generated, and the analog signal is modulated into a first radio frequency signal.

[0075] In this embodiment, the staff sends out the first radio frequency signal to control the same-frequency counter-transmission valve by operating the visual interface on the external device. The staff selects a same-frequency counter-transmission valve in the visual interface, and a pop-up window pops up to display the real-time status of the same-frequency counter-transmission valve. The staff can view the real-time status of the same-frequency counter-transmission valve. The pop-up window can also set a close button, an open button and an opening angle setting box. The opening angle setting box allows the staff to fill in the required opening angle or opening and closing percentage. When the staff wants to change the real-time status of the same-frequency counter-transmission valve, it includes the following situations:

[0076] 1) When a staff member wants to close the same-frequency transmission valve, a digital signal having a first frequency A and containing M continuous pulses is generated, and the digital signal is modulated to obtain a first radio frequency signal.

[0077] 2) The staff wants to open the same-frequency transmission valve to 100%. At this time, a digital signal with a first frequency A and N continuous pulses is generated, and the digital signal is modulated to obtain a first radio frequency signal.

[0078] 3) The staff wants to open the same-frequency counter-transmission valve to a specified opening angle or opening percentage, and fills in the desired opening angle or opening percentage in the opening angle setting box. For example, when 70% is filled in the opening angle setting box, the frequency D is obtained by querying the frequency control table. At this time, an analog signal of frequency D is generated, and the analog signal is modulated to obtain a first radio frequency signal.

[0079] Furthermore, in some embodiments, the visualization module is also used to:

[0080] Save the control instructions and real-time status of all valves transmitting in the same frequency in the valve map;

[0081] When the control command is inconsistent with the real-time status, an alarm will be given to the valve with the same frequency transmission.

[0082] In this embodiment, the visualization module stores the real-time status and control instructions of all the same-frequency opposite-transmission valves. When the control instruction and the real-time status are consistent, it indicates that the remote control of the same-frequency opposite-transmission valve is successful. For example, when the control instruction is to control the same-frequency opposite-transmission valve to be closed, and the real-time status of the same-frequency opposite-transmission valve is closed, it indicates that the remote control is successful. When the control instruction and the real-time status are inconsistent, it indicates that the remote control of the same-frequency opposite-transmission valve has failed. For example, when the control instruction is to control the same-frequency opposite-transmission valve to be closed, and the real-time status of the same-frequency opposite-transmission valve is open, it indicates that the remote control has failed. At this time, an alarm is issued to remind the staff of the remote control failure, so that the staff can take emergency measures, such as performing remote control or manual control again.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A same-frequency counter-transmission valve based on switch quantity and analog quantity, comprising a valve body, characterized in that: include: LoRa communication module: used to receive and demodulate the first radio frequency signal from the external device to obtain a control instruction; The first radio frequency signal is modulated according to the switch quantity and the analog quantity; Also used for receiving a second radio frequency signal from the status acquisition module, and sending the second radio frequency signal to an external device; Action module: connected to the valve body, the action module is used to receive the control instruction and control the action of the valve body according to the control instruction; Status acquisition module: used to acquire the real-time status of the valve body and modulate the real-time status into a second radio frequency signal.

2. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 1 is characterized in that: The first radio frequency signal obtained by modulation of the switching quantity is used to control the valve body to open or close; the first radio frequency signal obtained by modulation of the analog quantity is used to control the valve body to open to a specified opening angle or a specified opening and closing percentage.

3. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 2 is characterized in that: The state acquisition module includes an angle sensor disposed on the valve body; the angle sensor is used to convert the detection signal into an analog quantity and then output it; The state of the valve body includes opening, opening angle and opening percentage, or closing.

4. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 1 is characterized in that: The external device includes: Visualization module: provided with a visualization interface; a valve map is provided on the visualization interface; the valve map is used to display the layout of all the same-frequency counter-transmission valves in the industrial site. When a same-frequency counter-transmission valve is selected in the valve map, the real-time status of the selected same-frequency counter-transmission valve is displayed through a pop-up window; the real-time status is obtained by demodulating the second radio frequency signal.

5. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 4 is characterized in that: The real-time status of the same-frequency counter-transmission valve includes closing, opening angle or opening percentage.

6. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 4 is characterized in that: The action module is specifically used for: Converting the control instruction into a digital signal; When it is detected that the frequency of the digital signal is the first frequency and contains N continuous pulses, the valve body is controlled to open; the default opening angle or opening percentage is 100%; When it is detected that the frequency of the digital signal is the first frequency and contains M continuous pulses, controlling the valve body to close; When it is detected that the frequency of the digital signal is not the first frequency, a frequency control table is queried according to the frequency of the digital signal to obtain an opening angle or an opening percentage, and the valve is controlled to open to the opening angle or the opening percentage; wherein the frequency control table contains different frequencies and corresponding opening angles or opening percentages.

7. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 6 is characterized in that: The state acquisition module is specifically used for: When it is detected that the valve body is closed, a digital signal having the first frequency and comprising M continuous pulses is generated, and the digital signal is modulated into the second radio frequency signal; When it is detected that the valve body is opened, the opening angle or opening percentage of the valve body is collected, and the frequency control table is queried according to the collected opening angle or opening percentage to obtain the corresponding frequency, generate a digital signal of the corresponding frequency, and modulate the digital signal into the second radio frequency signal.

8. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 6 is characterized in that: After displaying the real-time status of the selected same-frequency counter-transmission valve through a pop-up window, the visualization module is also used to: Set the close button, open button and opening angle setting box in the pop-up window; When it is detected that the close button is triggered, a digital signal having a first frequency and comprising M continuous pulses is generated, and the digital signal is modulated into the first radio frequency signal; When it is detected that the open button is triggered, a digital signal having a first frequency and comprising N continuous pulses is generated, and the digital signal is modulated into the first radio frequency signal; When it is detected that the opening angle setting box is filled with the opening angle or the opening percentage, the frequency control table is queried to obtain the corresponding frequency, an analog signal of the corresponding frequency is generated, and the analog signal is modulated into the first radio frequency signal.

9. The same frequency counter-transmission valve based on switch quantity and analog quantity according to claim 8 is characterized in that: The visualization module is also used for: Saving the control instructions and real-time status of all the same-frequency transmitting valves in the valve map; When the control instruction is inconsistent with the real-time status, an alarm is given to the same-frequency transmission valve.

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