阅读说明：本技术 一种基于电场测量的直流电压检测报警系统及其检测方法 (Direct-current voltage detection alarm system based on electric field measurement and detection method thereof ) 是由 胡国波 吴小刚 潘一藩 于 2020-12-04 设计创作，主要内容包括：本发明提供了一种基于电场测量的直流电压检测报警系统,所述直流电压检测报警系统包括传感器、信号调理单元、A/D转换单元、控制处理单元、存储单元、按键输入单元、显示单元、报警单元和通信单元；所述直流电压检测报警系统采集电场值和环境温度信号,并经过所述信号调理单元进行调理输出,所述控制处理单元进行分析判断,通过所述存储单元和所述显示单元进行存储显示,当所述电场值较高时及时发出报警信息,并通过所述通信单元上传至上位机。本发明采集待测电场值,并采用ZigBee无线通信技术和GPRS技术分别将检测信息传输至上位机和工作人员的远程终端,提高检测报警系统的准确性和安全可靠性。(The invention provides a direct-current voltage detection alarm system based on electric field measurement, which comprises a sensor, a signal conditioning unit, an A/D (analog/digital) conversion unit, a control processing unit, a storage unit, a key input unit, a display unit, an alarm unit and a communication unit, wherein the signal conditioning unit is used for processing a signal; the direct current voltage detection alarm system collects an electric field value and an environment temperature signal, the electric field value and the environment temperature signal are conditioned and output through the signal conditioning unit, the control processing unit analyzes and judges, the electric field value is stored and displayed through the storage unit and the display unit, alarm information is timely sent out when the electric field value is higher, and the alarm information is uploaded to an upper computer through the communication unit. The invention collects the electric field value to be detected, and transmits the detection information to the remote terminals of the upper computer and the staff respectively by adopting the ZigBee wireless communication technology and the GPRS technology, thereby improving the accuracy and the safety and the reliability of the detection alarm system.)

1. A direct current voltage detection alarm system based on electric field measurement is characterized by comprising a sensor, a signal conditioning unit, an A/D conversion unit, a control processing unit, a storage unit, a key input unit, a display unit, an alarm unit and a communication unit, wherein the sensor is sequentially connected with the signal conditioning unit, the A/D conversion unit and the control processing unit, and the control processing unit is also respectively connected with the storage unit, the key input unit, the display unit, the alarm unit and the communication unit; the direct current voltage detection alarm system collects an electric field value and an environment temperature signal, the electric field value and the environment temperature signal are conditioned and output through the signal conditioning unit, the control processing unit analyzes and judges, the electric field value is stored and displayed through the storage unit and the display unit, alarm information is timely sent out when the electric field value is higher, and the alarm information is uploaded to an upper computer through the communication unit.

2. The direct-current voltage detection alarm system based on electric field measurement as claimed in claim 1, wherein the sensor comprises an electric field sensor and a temperature sensor, the electric field sensor adopts an electrode type vibration capacitance sensor to collect the electric field value, and the temperature sensor collects a temperature signal of a detection environment.

3. The direct-current voltage detection alarm system based on electric field measurement as claimed in claim 2, wherein the signal conditioning unit comprises a voltage following module and a filtering module, wherein the voltage following module converts a low-frequency half-wave signal collected by the sensor into a signal meeting the input requirement of the A/D conversion unit; the filtering module filters high-frequency noise signals in a complex electromagnetic environment by adopting a low-pass filter.

4. The direct current voltage detection alarm system based on electric field measurement as claimed in claim 3, wherein said key input unit is combined with said storage unit and said display unit to perform parameter setting and information query on said direct current voltage detection alarm system, and said parameters include a voltage alarm value and a temperature alarm value.

5. The direct current voltage detection alarm system based on electric field measurement as claimed in claim 4, wherein the display unit uses LCD liquid crystal display for information display.

6. The direct-current voltage detection alarm system based on electric field measurement as claimed in claim 5, wherein the control processing unit adopts a microprocessor to analyze and judge the signal.

7. The direct-current voltage detection alarm system based on electric field measurement as claimed in claim 6, wherein the alarm unit employs an audible and visual alarm, and when the electric field value is abnormal and the temperature signal is abnormal, an alarm signal can be sent out in time, so that a worker can more intuitively perceive the working state of the direct-current voltage detection alarm system.

8. The direct-current voltage detection alarm system based on electric field measurement according to claim 7, wherein the communication unit uploads the detection information of the direct-current voltage detection alarm system to the upper computer by adopting a ZigBee wireless communication technology, and the upper computer transmits the detection information to a remote terminal of a worker by adopting a GPRS technology, so that the interference of an alarm signal caused by the complex field environment is prevented.

9. The direct-current voltage detection alarm system based on electric field measurement according to claim 8, further comprising an insulating protection rod, which facilitates voltage detection and protects personal safety of the worker, wherein the insulating protection rod is a telescopic rod.

10. The detection alarm method of the direct current voltage detection alarm system based on the electric field measurement as claimed in any one of claims 1 to 9, wherein the detection alarm method comprises the steps of:

step (1): the sensor collects the electric field value and the temperature signal;

step (2): the electric field value is converted into a signal meeting the input requirement of the A/D conversion unit through the voltage following module;

and (3): filtering high-frequency noise signals in a complex electromagnetic environment by the filtering module;

and (4): performing A/D conversion by the A/D conversion unit;

and (5): storing and displaying the electric field value and the temperature signal;

and (6): the control processing unit compares the temperature signal with the temperature alarm value, and if the temperature signal is greater than the temperature alarm value, a high temperature alarm is sent out through the alarm unit and the display unit;

and (7): the control processing unit compares and judges the electric field value and the voltage alarm value, and if the electric field value is larger than the voltage alarm value, a voltage high alarm is sent out through the alarm unit and the display unit;

and (8): and uploading the detection information of the direct current voltage detection alarm system to the upper computer through the communication unit.

Technical Field

The invention belongs to the technical field of electric power detection, and particularly relates to a direct-current voltage detection alarm system based on electric field measurement and a detection method thereof.

Background

At present, the power transmission modes of the power grid in China are mainly alternating current power transmission and direct current power transmission. The high-voltage direct-current transmission mode has the advantages of longer transmission distance, large capacitance, low line cost, small loss and no problem of synchronous stability, so that the direct-current transmission mode is more economical and convenient. With the continuous development of the high-voltage direct-current transmission technology, a plurality of transmission projects with different voltage grades are built in China one after another and stably operate. The development of the high-voltage direct-current transmission technology causes safety problems in construction, operation and maintenance to increase day by day. Before the high-voltage power equipment which suffers from faults or needs to be powered off is subjected to power-off maintenance, the equipment which needs to be powered off is subjected to power-off operation, the voltage state of a power transmission line is detected, the equipment is ensured to be in a power-off state, next-step maintenance and first-aid repair work can be carried out, and the occurrence of serious accidents of equipment damage and personal safety danger is avoided.

The invention provides a direct-current voltage detection alarm system based on electric field measurement, which adopts an electrode type vibration capacitance sensor to collect the value of an electric field to be measured, and adopts a ZigBee wireless communication technology and a GPRS technology to respectively transmit detection information to a remote terminal of an upper computer and a remote terminal of a worker, thereby effectively preventing the worker from not accurately seeing alarm information due to the complexity of a field environment, and improving the accuracy and the safety and the reliability of the detection alarm system.

Disclosure of Invention

The invention provides a direct-current voltage detection alarm system and a direct-current voltage detection alarm method based on electric field measurement, which are used for collecting an electric field value to be detected, and respectively transmitting detection information to a remote terminal of an upper computer and a remote terminal of a worker by adopting a ZigBee wireless communication technology and a GPRS technology, so that the accuracy and the safety and reliability of the detection alarm system are improved.

The invention particularly relates to a direct-current voltage detection alarm system based on electric field measurement, which comprises a sensor, a signal conditioning unit, an A/D conversion unit, a control processing unit, a storage unit, a key input unit, a display unit, an alarm unit and a communication unit, wherein the sensor is sequentially connected with the signal conditioning unit, the A/D conversion unit and the control processing unit, and the control processing unit is also respectively connected with the storage unit, the key input unit, the display unit, the alarm unit and the communication unit; the direct current voltage detection alarm system collects an electric field value and an environment temperature signal, the electric field value and the environment temperature signal are conditioned and output through the signal conditioning unit, the control processing unit analyzes and judges, the electric field value is stored and displayed through the storage unit and the display unit, alarm information is timely sent out when the electric field value is higher, and the alarm information is uploaded to an upper computer through the communication unit.

The sensor comprises an electric field sensor and a temperature sensor, wherein the electric field sensor adopts an electrode type vibration capacitance sensor to collect an electric field value, and the temperature sensor collects a temperature signal of a detection environment.

The signal conditioning unit comprises a voltage following module and a filtering module, wherein the voltage following module converts the low-frequency half-wave signal collected by the sensor into a signal meeting the input requirement of the A/D conversion unit; the filtering module filters high-frequency noise signals in a complex electromagnetic environment by adopting a low-pass filter.

The key input unit is combined with the storage unit and the display unit to carry out parameter setting and information query on the high-voltage direct-current voltage detection alarm system, and the parameters comprise a voltage alarm value and a temperature alarm value.

The display unit adopts an LCD to display information.

And the control processing unit adopts a microprocessor to analyze and judge the signals.

The alarm unit adopts an acousto-optic alarm, and can send out an alarm signal in time when the electric field value is abnormal and the temperature signal is abnormal, so that a worker can sense the working state of the direct-current voltage detection alarm system more visually.

The communication unit adopts zigBee wireless communication technology with direct current voltage detection alarm system detection information uploads to the host computer, the host computer adopts GPRS technique with detection information transmission to staff's remote terminal again, prevents to lead to alarm signal's interference because of site environment complicacy.

The direct-current voltage detection alarm system further comprises an insulating protection rod, the insulating protection rod is convenient for workers to carry out voltage detection and protect personal safety of the workers, and the insulating protection rod is a telescopic rod.

The invention also provides a detection and alarm method of the direct current voltage detection alarm system based on electric field measurement, which comprises the following steps:

step (1): the sensor collects the electric field value and the temperature signal;

step (2): the electric field value is converted into a signal meeting the input requirement of the A/D conversion unit through the voltage following module;

and (3): filtering high-frequency noise signals in a complex electromagnetic environment by the filtering module;

and (4): performing A/D conversion by the A/D conversion unit;

and (5): storing and displaying the electric field value and the temperature signal;

and (6): the control processing unit compares the temperature signal with the temperature alarm value, and if the temperature signal is greater than the temperature alarm value, a high temperature alarm is sent out through the alarm unit and the display unit;

and (7): the control processing unit compares and judges the electric field value and the voltage alarm value, and if the electric field value is larger than the voltage alarm value, a voltage high alarm is sent out through the alarm unit and the display unit;

and (8): and uploading the detection information of the direct current voltage detection alarm system to the upper computer through the communication unit.

Compared with the prior art, the beneficial effects are: the direct-current voltage detection alarm system adopts the electrode type vibration capacitance sensor to collect the electric field value to be detected, and adopts the ZigBee wireless communication technology and the GPRS technology to transmit detection information to the remote terminals of an upper computer and workers respectively, so that the situation that the workers cannot accurately see alarm information due to the complexity of the field environment is effectively prevented, and the accuracy and the safety and reliability of the detection alarm system are improved.

Drawings

Fig. 1 is a schematic structural diagram of a dc voltage detection alarm system based on electric field measurement according to the present invention.

Fig. 2 is a flow chart of the operation of the dc voltage detection alarm system based on electric field measurement according to the present invention.

Detailed Description

The following describes in detail a specific embodiment of the dc voltage detection alarm system based on electric field measurement according to the present invention with reference to the accompanying drawings.

As shown in fig. 1, the dc voltage detection alarm system of the present invention includes a sensor, a signal conditioning unit, an a/D conversion unit, a control processing unit, a storage unit, a key input unit, a display unit, an alarm unit, and a communication unit, wherein the sensor is sequentially connected to the signal conditioning unit, the a/D conversion unit, and the control processing unit is further connected to the storage unit, the key input unit, the display unit, the alarm unit, and the communication unit, respectively; the direct current voltage detection alarm system collects an electric field value and an environment temperature signal, the electric field value and the environment temperature signal are conditioned and output through the signal conditioning unit, the control processing unit analyzes and judges, the electric field value is stored and displayed through the storage unit and the display unit, alarm information is timely sent out when the electric field value is higher, and the alarm information is uploaded to an upper computer through the communication unit.

The sensor comprises an electric field sensor and a temperature sensor, wherein the electric field sensor adopts an electrode type vibration capacitance sensor to collect an electric field value, and the temperature sensor collects a temperature signal of a detection environment.

The signal conditioning unit comprises a voltage following module and a filtering module, wherein the voltage following module converts the low-frequency half-wave signal collected by the sensor into a signal meeting the input requirement of the A/D conversion unit; the filtering module filters high-frequency noise signals in a complex electromagnetic environment by adopting a low-pass filter.

The key input unit is combined with the storage unit and the display unit to carry out parameter setting and information query on the high-voltage direct-current voltage detection alarm system, and the parameters comprise a voltage alarm value and a temperature alarm value.

The display unit adopts an LCD to display information.

And the control processing unit adopts a microprocessor to analyze and judge the signals.

The alarm unit adopts an acousto-optic alarm, and can send out an alarm signal in time when the electric field value is abnormal and the temperature signal is abnormal, so that a worker can sense the working state of the direct-current voltage detection alarm system more visually.

The communication unit adopts zigBee wireless communication technology with direct current voltage detection alarm system detection information uploads to the host computer, the host computer adopts GPRS technique with detection information transmission to staff's remote terminal again, prevents to lead to alarm signal's interference because of site environment complicacy.

The direct-current voltage detection alarm system further comprises an insulating protection rod, the insulating protection rod is convenient for workers to carry out voltage detection and protect personal safety of the workers, and the insulating protection rod is a telescopic rod.

As shown in fig. 2, the present invention further provides a detection alarm method of a dc voltage detection alarm system based on electric field measurement, wherein the detection alarm method comprises the following steps:

step (1): the sensor collects the electric field value and the temperature signal;

step (2): the electric field value is converted into a signal meeting the input requirement of the A/D conversion unit through the voltage following module;

and (3): filtering high-frequency noise signals in a complex electromagnetic environment by the filtering module;

and (4): performing A/D conversion by the A/D conversion unit;

and (5): storing and displaying the electric field value and the temperature signal;

and (6): the control processing unit compares the temperature signal with the temperature alarm value, and if the temperature signal is greater than the temperature alarm value, a high temperature alarm is sent out through the alarm unit and the display unit;

and (7): the control processing unit compares and judges the electric field value and the voltage alarm value, and if the electric field value is larger than the voltage alarm value, a voltage high alarm is sent out through the alarm unit and the display unit;

and (8): and uploading the detection information of the direct current voltage detection alarm system to the upper computer through the communication unit.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.