阅读说明：本技术 一种高精度阴极保护电位恒定保持装置及方法 (High-precision cathode protection potential constant maintaining device and method ) 是由 闫允一 刘莹 刘程远 苗松 于 2019-04-12 设计创作，主要内容包括：一种高精度阴极保护电位恒定保持装置及方法,包括信号处理模块、主控模块、执行模块,所述信号处理模块与主控模块电连接,主控模块与执行模块电连接；所述信号处理模块用于对采样来的输入信号做模数转换并输出到主控模块；所述主控模块根据模数转换后的信号通过内部算法处理计算出实时的输出控制信息,并将控制信息发送给执行模块；所述执行模块则根据主控模块发送来的控制信息具体生成对应的电压信号输出到实际电路当中。有效避免了现有技术中埋地油气管道阴极保护系统无法控制稳定管道保护电位、对外界环境的适应能力差、抗干扰能力较差、无法在复杂的环境下长时间将电位维持在预先的设定值的缺陷。(A high-precision cathode protection potential constant holding device and a method thereof comprise a signal processing module, a main control module and an execution module, wherein the signal processing module is electrically connected with the main control module; the signal processing module is used for performing analog-to-digital conversion on the sampled input signal and outputting the input signal to the main control module; the main control module calculates real-time output control information through internal algorithm processing according to the signals after analog-to-digital conversion, and sends the control information to the execution module; and the execution module specifically generates a corresponding voltage signal according to the control information sent by the main control module and outputs the voltage signal to the actual circuit. The defects that a buried oil and gas pipeline cathode protection system in the prior art cannot control and stabilize the pipeline protection potential, has poor adaptability to the external environment and poor anti-interference capability and cannot maintain the potential at a preset value for a long time in a complex environment are effectively overcome.)

1. A high-precision cathode protection potential constant holding device is characterized in that: the system comprises a signal processing module, a main control module and an execution module, wherein the signal processing module is electrically connected with the main control module;

the signal processing module is used for performing analog-to-digital conversion on the sampled input signal and outputting the input signal to the main control module;

the main control module calculates real-time output control information through internal algorithm processing according to the signals after analog-to-digital conversion, and sends the control information to the execution module;

and the execution module specifically generates a corresponding voltage signal according to the control information sent by the main control module and outputs the voltage signal to the actual circuit.

2. The high-precision cathode protection potential constant holding device according to claim 1, characterized in that: the high-precision cathode protection potential constant holding device also comprises a power module device, wherein the power module device comprises a first power module, a second power module and a third power module;

the first power supply module is electrically connected with the signal processing module and is used for providing power supply required by the work of the signal processing module;

the second power supply module is electrically connected with the main control module and is used for providing power supply required by the work of the main control module;

and the third power supply module is electrically connected with the execution module and is used for providing power supply required by the operation of the execution module.

3. The high-precision cathode protection potential constant holding device according to claim 1, characterized in that: the main control module is also electrically connected with an information display module, and the information display module is used for displaying the information set by the parameter setting module and the control information.

The main control module is also electrically connected with a clock module and used for providing a reference clock frequency signal required by the work of the main control module.

4. The high-precision cathode protection potential constant holding device according to claim 1, characterized in that: the main control module is also electrically connected with a parameter setting module for interacting with an external user, and the user can set a voltage data value and send a control instruction to the main control module through the parameter setting module.

5. The high-precision cathode protection potential constant holding device according to claim 1, characterized in that:

the main control module is connected with the flash memory, the main control module is further connected with the WIFI module, the WIFI module is connected with the wireless local area network WLAN, and a notebook computer for backup is arranged in the wireless local area network WLAN, so that the main control module can transmit the control information in the form of information messages to the notebook computer for backup through the wireless local area network WLAN for storage, and the requirement of backup storage of the information can be met.

6. A method for maintaining a constant high-precision cathodic protection potential is characterized by comprising the following steps:

step 1: the signal processing module performs analog-to-digital conversion on the sampled input signal and outputs the analog-to-digital conversion to the main control module;

step 2: the main control module calculates real-time output control information through internal algorithm processing according to the signals after analog-to-digital conversion, and sends the control information to the execution module;

and step 3: and the execution module specifically generates a corresponding voltage signal according to the control information sent by the main control module and outputs the voltage signal to the actual circuit.

7. The method of claim 6, wherein the method for the main control module to transmit the information message to the notebook computer for backup via the Wireless Local Area Network (WLAN) comprises the following steps:

1-1: constructing a temporary storage space for storing information messages transmitted by the main control module to a notebook computer for backup in a Wireless Local Area Network (WLAN);

the temporary storage space can be a space with a set size of a main memory of the main control module, and the temporary storage space is used for temporarily storing the information message transmitted by the main control module to the notebook computer for backup in the wireless local area network WLAN, namely the notebook computer for backup in the wireless local area network WLAN can only obtain the control information in the form of the information message obtained by the main control module through the temporary storage space;

the number of the main control modules is a plurality, and only one notebook computer is provided;

1-2: monitoring the sum of bit positions of the information message in the current temporary storage space, and judging whether the sum of the bit positions is not lower than a set length critical value or not;

when the sum of the bits is judged to be not less than the length critical value, it represents that the notebook computer for backup in the wireless local area network WLAN is not smooth, the speed of the feedback information message in the notebook computer for backup in the wireless local area network WLAN is lower than the speed of the information message obtained by the main control module, at this time, if the information message continuously formed by the main control module for transferring the temporary storage space is also obtained, the notebook computer for backup in the wireless local area network WLAN is always jammed and is not beneficial to the normal use of the notebook computer for backup in the wireless local area network WLAN, at this time, all the main control modules need to be informed to stop transmitting the information message to the notebook computer for backup in the wireless local area network WLAN, or the temporary storage space stops storing the obtained information message transmitted by the main control module, and naturally, the information message can also be before the temporary storage space of 1-1, the method comprises the following steps that all main control modules are set in advance to refuse to transmit information messages again, namely, all main control modules are set in advance to refuse to transmit a next information message after transmitting an information message and before the information message is fed back by a notebook computer used for backup in a Wireless Local Area Network (WLAN), and the detailed achieving method is that the time interval during which all the main control modules obtain feedback is set as the maximum value which can be expressed by the number of machines of the main control modules;

but when the sum of the bit bits is judged to be lower than the length critical value by one, the notebook computer for backup in the WLAN is smooth, and the process can be continued for 1-2;

1-3: repeatedly transmitting an information message with the minimum bit size to a notebook computer for backup in a Wireless Local Area Network (WLAN) in a circulating way;

1-4: judging whether the feedback time interval of the notebook computer for backup in the WLAN to the information message with the minimum bit size is not higher than a critical value of a preset time interval or not;

the mark on the information message fed back by the notebook computer for backup in the wireless local area network WLAN can be used for judging whether the information message is fed back by the notebook computer for backup in the wireless local area network WLAN to the information message with the minimum bit size;

if the size of the feedback time interval of the notebook computer used for backup in the WLAN to the information message with the minimum bit size is judged to be higher than the critical value of a preset time interval, continuing to execute the step 1-3; if the feedback time interval of the notebook computer for backup in the WLAN to the information message with the minimum bit size is judged not to be higher than the critical value of a preset time interval, executing 1-5;

1-5: sequentially transmitting the information messages in the temporary storage space to a notebook computer for backup in the WLAN by virtue of the sequence of the information messages stored in the temporary storage space;

if the information message fed back by the notebook computer for backup in the wireless local area network WLAN is received, the information message stored in the corresponding format is cancelled in the temporary storage space by means of the mark on the fed back information message, and the information message is transmitted to the corresponding main control module by means of the mark on the fed back information message, so that the requirement of the notebook computer for backup in the wireless local area network WLAN of the main control module is met.

8. The method of claim 7, wherein the method for the main control module to transmit the information message to the notebook computer for backup via the wireless local area network WLAN comprises the following steps:

2-1: the method comprises the steps that after an information message is transmitted by all main control modules in advance, the information message is refused to be transmitted after being fed back by a notebook computer used for backup in a Wireless Local Area Network (WLAN);

2-2: constructing a temporary storage space for storing information messages transmitted by each main control module to a notebook computer for backup in a Wireless Local Area Network (WLAN);

2-3: monitoring the sum of the bit quantity of a first character of the information message in the temporary storage space at the destination, and judging whether the sum of the bit quantity of the first character is not lower than a preset length critical value one or not;

if so, executing 2-4; if not, continuing to execute 2-3;

2-4: repeatedly transmitting an information message with the minimum bit size to a notebook computer for backup in a Wireless Local Area Network (WLAN) in a circulating way;

2-5: judging whether the feedback time interval of the notebook computer for backup in the WLAN to the information message with the minimum bit size is not higher than a critical value of a preset time interval or not;

if not, returning to the step 2-4 for execution; if so, executing 2-6;

2-6: sequentially transmitting the information messages in the temporary storage space to a notebook computer for backup in the WLAN according to the sequence of the time stored in the temporary storage space;

2-7: monitoring the sum of the number of second character bits of the information message in the temporary storage space at the destination, and judging whether the sum of the number of the second character bits is not higher than a preset length critical value two;

here, the length threshold value two is lower than the length threshold value one;

if yes, go to 2-8 to execute; if not, continuing to execute 2-7;

2-8: stopping circularly and repeatedly transmitting the information message with the minimum bit size to the notebook computer for backup in the WLAN, and informing all the main control modules that the information message can be continuously obtained;

the notebook computer terminal for backup in the wireless local area network WLAN comprises a communication program, a storage program and an operation program, wherein:

the communication program is used for obtaining information messages transmitted by each main control module to a notebook computer for backup in a Wireless Local Area Network (WLAN), the storage program is used for storing the information messages obtained by the communication program, the operation program is used for monitoring the sum of bit sizes of first characters of all the information messages stored in the storage program at the present, and whether the sum of the bit sizes of the first characters is not lower than a preset length critical value is judged;

when the operation program judges that the sum of the bit sizes of the first characters is not less than the length critical value, the notebook computer for backup in the WLAN is not smooth, the speed of feeding back the information message in the notebook computer for backup in the WLAN is lower than the speed of generating the information message by the main control module, if the information message continuously generated by the main control module forwarded by the temporary storage space is continuously obtained, the notebook computer for backup in the WLAN is often blocked and normal use of the notebook computer for backup in the WLAN is affected, at this time, the operating program is required to control the communication program to notify all the main control modules to stop transmitting the information message to the notebook computer for backup in the WLAN, or controlling the communication program to stop obtaining the information message transmitted by the main control module so as to stop storing the storage program; naturally, the operating program may also set all the main control modules in advance to refuse to transmit the information message again, that is, the operating program refuses to transmit the next information message after transmitting the information message generated by the main control module and before being fed back by the notebook computer for backup in the wireless local area network WLAN;

then, the communication program circularly and repeatedly transmits an information message with the minimum bit size to a notebook computer for backup in the WLAN, and the operation program judges whether the feedback time interval size of the notebook computer for backup in the WLAN to the information message with the minimum bit size is less than or equal to a critical value of a preset time interval or not; if yes, the operation program is enabled to transmit the information messages to the notebook computer for backup in the WLAN in sequence according to the sequence of the time when the information messages are stored in the storage program; after the control communication program sequentially transmits the information messages in the storage program to the notebook computer for backup in the WLAN, the operation program controls the storage program to cancel the information messages fed back by the notebook computer for backup in the WLAN;

the operation program monitors the sum of the bit sizes of the second characters of the information messages stored in the program under the view, controls the communication program to stop transmitting the information message with the minimum bit size to the notebook computer for backup in the WLAN repeatedly in a circulating way when judging that the sum of the bit sizes of the second characters is lower than or equal to a preset length critical value two, and controls the communication program to inform the main control module to continue generating the information message, wherein the length critical value two is lower than the length critical value one.

Technical Field

The invention belongs to the technical field of pipeline protection, and particularly relates to a high-precision cathode protection potential constant maintaining device and method.

Background

The buried pipelines comprise various oil, gas and water pipelines, and most of the buried pipelines are metal pipelines. In order to improve the corrosion resistance of the metal pipeline and prolong the service life, the outer layer of the metal pipeline is generally provided with an anticorrosive layer. In order to further improve the corrosion resistance, a cathodic protection measure is also adopted, and generally a voltage is applied to the metal pipeline to enable the metal pipeline to present a negative potential to the ground. With the development of economy, the ground electromagnetic environment is more and more complex, the construction of direct current transmission systems, alternating current high-voltage transmission lines and the like near buried pipelines is rapidly developed, and possible stray current interference sources such as alternating current and direct current electrified railways, rectifier station substations thereof, large-scale factories, alternating current grounding bodies, direct current grounding bodies and the like can interfere with the work of cathode protection systems of metal pipelines, so that the corrosion speed of the metal pipelines is accelerated. Therefore, it is very important to take corresponding protection measures in time to avoid serious pipeline accidents.

Disclosure of Invention

Aiming at the problems, the invention provides a high-precision cathode protection potential constant holding device and method, which effectively overcome the defects that a buried oil and gas pipeline cathode protection system in the prior art cannot control and stabilize the pipeline protection potential, has poor adaptability to the external environment and poor anti-interference capability, and cannot maintain the potential at a preset value for a long time in a complex environment.

In order to overcome the defects in the prior art, the invention provides a solution of a high-precision cathode protection potential constant maintaining device and method, which comprises the following specific steps:

a high-precision cathode protection potential constant holding device comprises a signal processing module, a main control module and an execution module, wherein the signal processing module is electrically connected with the main control module;

the signal processing module is used for performing analog-to-digital conversion on the sampled input signal and outputting the input signal to the main control module;

the main control module calculates real-time output control information through internal algorithm processing according to the signals after analog-to-digital conversion, and sends the control information to the execution module;

and the execution module specifically generates a corresponding voltage signal according to the control information sent by the main control module and outputs the voltage signal to the actual circuit.

The high-precision cathode protection potential constant holding device also comprises a power module device, wherein the power module device comprises a first power module, a second power module and a third power module;

the first power supply module is electrically connected with the signal processing module and is used for providing power supply required by the work of the signal processing module;

the second power supply module is electrically connected with the main control module and is used for providing power supply required by the work of the main control module;

and the third power supply module is electrically connected with the execution module and is used for providing power supply required by the operation of the execution module.

The main control module is also electrically connected with an information display module, and the information display module is used for displaying the information set by the parameter setting module and the control information.

The main control module is also electrically connected with a clock module and used for providing a reference clock frequency signal required by the work of the main control module.

The main control module is also electrically connected with a parameter setting module for interacting with an external user, and the user can set a voltage data value and send a control instruction to the main control module through the parameter setting module.

The method for the high-precision cathode protection potential constant maintaining device comprises the following steps:

step 1: the signal processing module performs analog-to-digital conversion on the sampled input signal and outputs the analog-to-digital conversion to the main control module;

step 2: the main control module calculates real-time output control information through internal algorithm processing according to the signals after analog-to-digital conversion, and sends the control information to the execution module;

and step 3: and the execution module specifically generates a corresponding voltage signal according to the control information sent by the main control module and outputs the voltage signal to the actual circuit.

The beneficial effects of the invention are as follows:

the high-precision cathode protection potential constant holding device provided by the invention can control and stabilize the potential at the pipeline protection potential in real time through the output of a voltage signal; the device has self-adaptive capacity to external environment changes and strong anti-interference capacity. The potential can be maintained at the set value of the user for a long time when various external environments such as temperature, humidity, weather and the like change; under the condition that the power supply is stable, the effect that the user sets long-time automatic operation at one time can be realized; in addition, because a parameter setting module is provided to achieve a wider acceptable parameter setting interval value, the high-precision cathode protection potential constant holding device can also be used for setting parameter debugging in different pipelines or different environments; and under the condition that the setting of the parameter setting module enters a debugging state, the optimal setting parameter value under the pipeline environment condition can be searched out by repeatedly setting different parameters and further repeatedly testing according to the actual display information of the display module.

Drawings

Fig. 1 is a schematic view of a high-precision cathodic protection potential constant holding device.

Detailed Description

To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.