Electronic pressure scanning valve multi-channel data synchronous acquisition system and acquisition method

Abstract

A kind of electronic pressure scanning valve multichannel data synchronous acquisition system, including a time synchronous acquisition controller and multiple multichannel synchronous measurement controllers that can communicate with it, each multichannel synchronous measurement controller is connected with an electronic pressure scanning valve control;The time synchronous acquisition controller includes first processor, standard clock generator, timing sampling control unit and first communication module connected with first processor;The multichannel synchronous measurement controller includes second processor, second wireless communication module connected with second processor, and the electronic pressure scanning valve is connected with second processor control.The electronic pressure scanning valve multichannel data synchronous acquisition system and acquisition method of the application can be used in multichannel electronic pressure scanning valve measurement scene, realize each scanning valve synchronous acquisition, realize the accurate time synchronization of the acquisition data between electronic scanning valve.

Description

Technical Field

[0001] This invention belongs to the field of electronic technology and relates to synchronous data acquisition, specifically to a multi-channel synchronous data acquisition system and method for electronic pressure scanning valves. Background Technology

[0002] Electronic pressure scanning valves are measuring instruments used in basic engineering and technological sciences, civil engineering, environmental science and technology, and resource fields. Existing electronic pressure scanning valves can measure multiple pressure signals in real time, accurately measure and evaluate pressure in working environments with wide temperature variations, and display and output the results graphically. The entire system is lightweight, easy to use, and maintains good accuracy, leading to its increasingly widespread application.

[0003] In some applications, multiple electronic pressure scanning valves need to be scanned synchronously in time to acquire data from different spaces at the same point in time. Currently, there is a lack of synchronous scanning control technology for multiple electronic pressure scanning valves. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this invention discloses a multi-channel data synchronous acquisition system and acquisition method for electronic pressure scanning valves.

[0005] The electronic pressure scanning valve multi-channel data synchronous acquisition system of the present invention includes a time synchronization acquisition controller and multiple multi-channel synchronous measurement controllers that can communicate with it, and each multi-channel synchronous measurement controller is controlled and connected to an electronic pressure scanning valve. The time synchronization acquisition controller includes a first processor, a standard clock generator, a timing sampling control unit, and a first communication module connected to the first processor; The multi-channel synchronous measurement controller includes a second processor, a second wireless communication module connected to the second processor, and the electronic pressure scanning valve is controlled and connected to the second processor.

[0006] Preferably, the standard clock generator is a BeiDou synchronization timing module.

[0007] Preferably, the first processor and the second processor are FPGAs or embedded microprocessor architectures.

[0008] Preferably, the first communication module and the second communication module are Bluetooth or Wi-Fi modules.

[0009] A method for synchronous acquisition of multi-channel data from an electronic pressure scanning valve includes the following steps: Step S1. Synchronize the local time with the standard time. Based on the preset sampling period, generate a synchronization trigger signal TS using the synchronized global time LP, and simultaneously broadcast the synchronized global time HL. Step S2. Each electronic pressure scanning valve acquires data according to the synchronous trigger signal TS, and marks the acquired data using the original timestamp of the local time L; Step S3. Use the synchronized global time HL to perform local time synchronization on each electronic pressure scanning valve with the original timestamp. After local time synchronization, the original timestamp is updated to the local timestamp, and time synchronization is completed.

[0010] Preferably, the standard time is BeiDou time.

[0011] Preferably, the specific method for local time synchronization in step 3 is as follows: S31. Calculate the time offset based on the synchronized global time HL(t) and the local time L(t) of the electronic pressure scanning valve. .

[0012] The electronic pressure scanning valve multi-channel data synchronous acquisition system and acquisition method described in this invention can be used in multi-channel electronic pressure scanning valve measurement scenarios to achieve synchronous acquisition of data from each scanning valve and to achieve precise time synchronization of data acquired between electronic scanning valves. Attached Figure Description

[0013] Figure 1 This is a schematic flowchart of a specific implementation of the multi-channel data synchronous acquisition method for the electronic pressure scanning valve described in this invention; Figure 2 This is a schematic diagram of a specific embodiment of the multi-channel data synchronous acquisition method for the electronic pressure scanning valve described in this invention; Figure 3 This is a schematic diagram of a specific implementation of the local time synchronization described in this invention. Detailed Implementation

[0014] The specific embodiments of the present invention will be described in further detail below.

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0016] like Figure 1 As shown, the multi-channel data synchronous acquisition method for the electronic pressure scanning valve of the present invention includes the following steps: Step S1. Synchronize the local time with the standard time. Based on the preset sampling period, generate a synchronization trigger signal TS using the synchronized global time LP, and simultaneously broadcast the synchronized global time HL. The standard time can be the BeiDou time sent in real time by the BeiDou time synchronization module.

[0017] Step S2. Each electronic pressure scanning valve acquires data according to the synchronous trigger signal TS, and marks the acquired data using the original timestamp of the local time L; A typical implementation of the tagged data is the original timestamp after the first byte of the data, followed by the collected data bytes.

[0018] Step S3. Use the synchronized global time HL to perform local time synchronization on each electronic pressure scanning valve with the original timestamp. After local time synchronization, the original timestamp is updated to the local timestamp, and time synchronization is completed.

[0019] The specific method for local time synchronization in step 3 is as follows: S31. Calculate the time offset estimate based on the synchronized global time HL(t) and the local time L(t) of the electronic pressure scanning valve. .

[0020] The above method allows for rapid time synchronization between different acquisition modules, ensuring consistency with the standard time provided by BeiDou. This time synchronization method eliminates the need to integrate a BeiDou time synchronization module into the acquisition module, contributing to a compact scanning valve design. Time synchronization can be achieved even in scenarios without BeiDou signal coverage.

[0021] For example, such as Figure 3 As shown, at time t1, the time synchronization acquisition controller broadcasts the global time timestamp H. L (t1) serves as the master clock, while the multi-channel synchronous measurement controller generates a local timestamp L1(t1) as the slave clock; at time t2, the time synchronization acquisition controller broadcasts the timestamp H. L (t2), the multi-channel synchronous measurement controller generates a timestamp L1(t2) locally; and so on, in Time synchronization acquisition controller broadcast timestamp H L (t n The multi-channel synchronous measurement controller generates a timestamp L1(t) locally. n ), Then the relative clock offset estimate θ(t) = H L (t n )-L1(t n ); .

[0022] In step 1, synchronizing the local time with the standard time can also be done using the method described above, with the standard time as the synchronized global time HL(t).

[0023] The electronic pressure scanning valve multi-channel data synchronous acquisition system of the present invention includes a time synchronization acquisition controller and multiple multi-channel synchronous measurement controllers that can communicate with it, and each multi-channel synchronous measurement controller is controlled and connected to an electronic pressure scanning valve. The time synchronization acquisition controller includes a first processor, a standard clock generator, a timing sampling control unit, and a first communication module connected to the first processor; The multi-channel synchronous measurement controller includes a second processor, a second wireless communication module connected to the second processor, and the electronic pressure scanning valve is controlled and connected to the second processor.

[0024] The working principle of the multi-channel data synchronization acquisition system for the electronic pressure scanning valve is as follows: a standard clock generator generates or receives a standard clock, for example, a Beidou synchronization time module, which synchronizes the standard clock with the local time of the area where the time synchronization acquisition controller is located. According to the pre-set sampling period of the electronic pressure scanning valve, a synchronization trigger signal TS is generated using the synchronized global time LP. For example, if the sampling period is set to 1 second, the clock counter inside the first processor will send out one pulse per second as the synchronization trigger signal TS. At the same time as the first communication module sends out the synchronization trigger signal, the first communication module also broadcasts the synchronized global time HL.

[0025] Standard time synchronized with local time For applications requiring high synchronization accuracy and sampling rate, the first processor of the time synchronization acquisition controller can be implemented using an FPGA+ embedded microprocessor architecture. Fine-grained time scales based on FPGA design serve as the time accuracy for synchronization by the first processor.

[0026] For applications requiring high synchronization accuracy and sampling rate, a single embedded microprocessor can be used as the primary processor. The embedded microprocessor's internal timer is used to design a coarse-grained time scale as the synchronization accuracy of the primary processor.

[0027] The first communication module may use Bluetooth, Wi-Fi or other short-range wireless communication technologies depending on the application scenario.

[0028] After receiving the synchronization trigger signal TS and the synchronized global time HL through the second communication module, each multi-channel synchronous measurement controller controls the connected electronic pressure scanning valve to perform data acquisition according to the synchronization trigger signal TS. The synchronization trigger signal TS can control whether the ADC of the electronic pressure scanning valve is working, so as to realize the synchronous periodic acquisition of data. During data acquisition, the clock counter inside the second processor stamps each acquired data with the local timestamp of the multi-channel synchronous measurement controller.

[0029] The data with the local timestamp is transmitted to the second processor. The second processor also receives the synchronized global time HL through the second communication module. It uses the synchronized global time HL to perform local time synchronization on the original timestamp. After local time synchronization, the original timestamp is updated to the local timestamp, and the time synchronization is completed.

[0030] Once time synchronization is complete, the data can be transmitted externally via the network port or the second communication module.

[0031] The electronic pressure scanning valve multi-channel data synchronous acquisition system and acquisition method described in this invention can be used in multi-channel electronic pressure scanning valve measurement scenarios to achieve synchronous acquisition of data from each scanning valve and to achieve precise time synchronization of data acquired between electronic scanning valves.

[0032] This invention can be implemented by computer program instructions and can provide these computer program instructions to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that the instructions, which are executed by the processor of the computer or other programmable data processing device, generate instructions for implementing the flowchart. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0033] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0034] The foregoing descriptions are preferred embodiments of the present invention. Unless there is a clear contradiction between the preferred embodiments or a prerequisite for a particular preferred embodiment, the preferred embodiments can be arbitrarily combined and used. The embodiments and specific parameters described are only for clearly illustrating the inventor's invention verification process and are not intended to limit the scope of patent protection of the present invention. The scope of patent protection of the present invention shall still be determined by its claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A method for synchronous acquisition of multi-channel data from an electronic pressure scanning valve, characterized in that, Includes the following steps: Step S1. Synchronize the local time with the standard time. Based on the preset sampling period, generate a synchronization trigger signal TS using the synchronized global time LP, and simultaneously broadcast the synchronized global time HL. Step S2. Each electronic pressure scanning valve acquires data according to the synchronous trigger signal TS, and marks the acquired data using the original timestamp of the local time L; Step S3. Use the synchronized global time HL to perform local time synchronization on the original timestamps of each electronic pressure scanning valve. After local time synchronization, the original timestamps are updated to the local timestamps, and time synchronization is completed. The specific method for local time synchronization in step S3 is as follows: S31. Calculate the time offset based on the synchronized global time HL(t) and the local time L(t) of the electronic pressure scanning valve. θ(t) = HL(t) - L(t) S32. Calculate the relative rate of the clock φ(t). φ(t)=1+[θ(t)-θ(t-τ)] / [[L(t)-L(t-τ)] In the formula, θ(t) is the current clock offset estimate, θ(t-τ) is the previous clock offset estimate, τ represents the time interval between the current broadcast and the previous broadcast, and L(t)-L(t-τ) is the local time interval between the two clock offset estimates; S33. Then the local time L(t) is synchronized according to the following formula; The synchronized time LE(t) = (1 + φ(t)) * L(t) + θ(t).

2. The data acquisition method as described in claim 1, characterized in that, The standard time used is BeiDou time.

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