阅读说明：本技术 一种雷电流监测装置 (Lightning current monitoring device ) 是由 杜刚 方袭 陈科企 宋光勇 王恒 于 2020-06-24 设计创作，主要内容包括：本发明实施例公开了一种雷电流监测装置,与待测设备连接,包括：传感器,用于监测所述待测设备的雷电流的电流变化率；积分器,与所述传感器连接,用于将所述电流变换率转换为电压变换率；控制模块,与所述积分器连接,用于将所述电压变换率进行分析并显示波形信息。本发明实施例提供的一种雷电流监测装置,通过在线监测系统或设备遭受雷电冲击或电涌冲击的情况,并将该数据信息进行实时上传并保存,解决了现有技术中在监测雷电流的情况时通常为离线状态的技术问题,实现了在线实时监测设备雷电流的效果,提升了系统的安全性和用户的体验。(The embodiment of the invention discloses a lightning current monitoring device which is connected with equipment to be tested and comprises: the sensor is used for monitoring the current change rate of the lightning current of the equipment to be tested; an integrator connected to the sensor for converting the current conversion rate to a voltage conversion rate; and the control module is connected with the integrator and used for analyzing the voltage conversion rate and displaying waveform information. According to the lightning current monitoring device provided by the embodiment of the invention, the condition that the system or the equipment is subjected to lightning impulse or surge impulse is monitored on line, and the data information is uploaded and stored in real time, so that the technical problem that the condition of the lightning current is monitored in the prior art is usually in an off-line state is solved, the effect of monitoring the lightning current of the equipment on line in real time is realized, and the safety of the system and the experience of a user are improved.)

1. The utility model provides a lightning current monitoring devices, is connected with the equipment that awaits measuring, its characterized in that includes:

the sensor is used for monitoring the current change rate of the lightning current of the equipment to be tested;

an integrator connected to the sensor for converting the current conversion rate to a voltage conversion rate;

and the control module is connected with the integrator and used for analyzing the voltage conversion rate and displaying waveform information.

2. A lightning current monitoring device according to claim 1, further comprising: an AD sampler connected between the integrator and the control module for converting the voltage conversion rate to a rapidly varying voltage signal.

3. A lightning current monitoring device according to claim 1, further comprising: and the power supply module is connected with the control module and used for providing a direct-current working power supply.

4. A lightning current monitoring device according to claim 3, further comprising: and the conversion module is connected with the power supply module and used for converting the direct-current working power supply into a direct-current working power supply.

5. A lightning current monitoring device according to claim 1, further comprising: and the storage module is connected with the control module and is used for storing the waveform information.

6. A lightning current monitoring device according to claim 1, further comprising: and the clock module is connected with the control module and is used for recording the occurrence time of the voltage conversion rate.

7. A lightning current monitoring device according to claim 1, further comprising: and the communication module is connected with the control module and is used for establishing communication connection between the control module and external equipment.

8. A lightning current monitoring device according to claim 7, wherein said communication module comprises: the wireless communication module is used for establishing wireless connection between the control module and the external equipment, and the wired communication module is used for establishing wired connection between the control module and the external equipment.

9. A lightning current monitoring device according to claim 1, wherein the control module includes one or more of a MCU and a CPU.

10. A lightning current monitoring device according to claim 1, characterised in that the sensor is connected to the earth line of the device under test.

Technical Field

The embodiment of the invention relates to a lightning monitoring technology, in particular to a lightning current monitoring device.

Background

In the face of construction requirements of smart meteorology, global meteorology and the like, lightning protection observation elements are more comprehensive, measurement results are more accurate, transmission processing is more timely, and meteorological observation equipment is moving towards the direction of intellectualization and microminiaturization. The lightning protection monitoring system is used as an important ground observation device, is to realize high precision, low power consumption, high integration, intellectualization and commercialization, and is suitable for various natural environments.

Lightning protection monitoring is mainly carried out in an off-line mode in the current market, components such as a lightning protection device and a surge protection device are monitored through a lightning protection element tester, and whether the lightning protection function fails or not is judged through parameters such as voltage-dependent voltage, leakage current and breakdown voltage. The offline monitoring mode can affect production and lack timeliness. And the leakage current is increased after the piezoresistor fails, the piezoresistor generates heat, the indication and remote signaling functions are realized through a heat effect element and a spring mechanism, but only one switching value signal can be output, and further quantitative analysis cannot be realized.

Disclosure of Invention

The invention provides a lightning current monitoring device, which is used for realizing the effect of monitoring the lightning current of equipment on line in real time. The embodiment of the invention provides a lightning current monitoring device which is connected with equipment to be tested and comprises:

the sensor is used for monitoring the current change rate of the lightning current of the equipment to be tested;

an integrator connected to the sensor for converting the current conversion rate to a voltage conversion rate;

and the control module is connected with the integrator and used for analyzing the voltage conversion rate and displaying waveform information.

Optionally, the method further includes: an AD sampler connected between the integrator and the control module for converting the voltage conversion rate to a rapidly varying voltage signal.

Optionally, the method further includes: and the power supply module is connected with the control module and used for providing a direct-current working power supply.

Optionally, the method further includes: and the conversion module is connected with the power supply module and used for converting the direct-current working power supply into a direct-current working power supply.

Optionally, the method further includes: and the storage module is connected with the control module and is used for storing the waveform information.

Optionally, the method further includes: and the clock module is connected with the control module and is used for recording the occurrence time of the voltage conversion rate.

Optionally, the method further includes: and the communication module is connected with the control module and is used for establishing communication connection between the control module and external equipment.

Optionally, the communication module includes: the wireless communication module is used for establishing wireless connection between the control module and the external equipment, and the wired communication module is used for establishing wired connection between the control module and the external equipment.

Optionally, the control module includes one or more of an MCU and a CPU.

Optionally, the sensor is connected to a ground wire of the device to be tested.

The embodiment of the invention discloses a lightning current monitoring device which is connected with equipment to be tested and comprises: the sensor is used for monitoring the current change rate of the lightning current of the equipment to be tested; an integrator connected to the sensor for converting the current conversion rate to a voltage conversion rate; and the control module is connected with the integrator and used for analyzing the voltage conversion rate and displaying waveform information. According to the lightning current monitoring device provided by the embodiment of the invention, the condition that the system or the equipment is subjected to lightning impulse or surge impulse is monitored on line, and the data information is uploaded and stored in real time, so that the technical problem that the condition of the lightning current is monitored in the prior art is usually in an off-line state is solved, the effect of monitoring the lightning current of the equipment on line in real time is realized, and the safety of the system and the experience of a user are improved.

Drawings

Fig. 1 is a module connection diagram of a lightning current monitoring device according to an embodiment of the present invention;

fig. 2 is a module connection diagram of a lightning current monitoring device according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, the first voltage may be referred to as a second voltage, and similarly, the second voltage may be referred to as the first voltage, without departing from the scope of the present application. The first voltage and the second voltage are both voltages, but they are not the same voltage. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Example one

Fig. 1 is a module connection diagram of a lightning current monitoring device according to an embodiment of the present invention, which is applicable to monitoring a lightning current condition of a device in real time, and the lightning current monitoring device according to the embodiment is connected to a device 4 to be tested, and includes: sensor 1, integrator 2 and control module 3.

The sensor 1 is used for monitoring the current change rate of the lightning current of the device 4 to be tested. The sensor 1 is connected to the ground wire of the device under test 4.

In this embodiment, the device under test 4 is a lightning protection power grid assembly such as a lightning protection device and a surge protector, and the lightning protection power grid assembly provides a safety protection electronic device for various electronic devices, instruments and meters, and communication lines. When the peak current or the voltage is suddenly generated in the electric loop or the communication line due to external interference, the lightning protection power grid assembly can be conducted and shunted in a very short time, so that damage of surge to other equipment in the loop is avoided. In this embodiment, the sensor 1 is connected to the device to be measured 4 and monitors a current change rate of the device to be measured 4 when conducting and shunting lightning current, that is, a current transformation amount in a unit time, and the sensor 1 in this embodiment needs to be sleeved on a lightning protection grounding wire of the device to be measured 4 for use. In this embodiment, the sensor 1 is preferably an open flexible Rogowski coil, facilitating installation and maintenance. The connecting wire of the output end of the coil adopts a double-layer shielding wire, so that the anti-interference performance is better. When lightning current hits the device 4 to be tested, any lightning current surge or surge generated by the ground wire of the device 4 to be tested is sensed by the coil and transmitted to the sensor 1 interface on the module, preferably using a reliable BNC shielding interface.

An integrator 2 is connected to the sensor 1 for converting the current rate of conversion to a voltage rate of conversion.

In the present embodiment, the integrator 2 refers to a module that integrates the difference between two inputs. These inputs may be the rate of change, or an accumulated value from a pulse counter. Comparing the accumulated value with the release action value, and controlling two separated outputs by the accumulated value; one of the outputs is active when the accumulated value reaches the release limit and the other is active when the pre-release value is reached. In the present embodiment, the integrator 2 is connected to the sensor 1, and the current conversion rate output by the sensor 1 is converted into a voltage conversion rate, i.e. a linear voltage signal, by an integrating and I/V converting circuit inside the sensor 1, and the linear voltage signal can be sent to the control chip for identification and analysis.

And the control module 3 is connected with the integrator 2 and is used for analyzing the voltage conversion rate and displaying waveform information.

In the present embodiment, the control module 3 includes one or more of an MCU (micro controller Unit) and a CPU (Central Processing Unit). For example, the MCU is also called a microcomputer or a single chip, and is a computer with a chip level formed by appropriately reducing the frequency and specification of the cpu, and integrating the peripheral interfaces such as the memory, the counter, the USB, the a/D conversion, the UART, the PLC, the DMA, and the like, and even the LCD driving circuit on a single chip, so as to perform different combination control for different applications. In this embodiment, the MCU receives the transformation change rate transmitted by the integrator 2, and identifies the transformation change rate to obtain the lightning current condition of the device 4 to be tested, for example, to obtain the charge total amount, the voltage peak value, the current peak value, the voltage change rate, the current change rate, and other important parameter information of the lightning current, and further to restore the waveform of the lightning current to display waveform information after the collected voltage signals are processed by software, where the waveform information includes the lightning current peak value, the polarity, the rise time, the half-peak time, the energy ratio, the number of lightning intrusions and the corresponding time, and the user may further define a location name for each module as needed. The lightning current monitoring system can also transmit relevant parameter information of the lightning current to the server in real time, operation and maintenance personnel can conveniently monitor the safety condition of the lightning protection power grid assembly in real time, the effect of monitoring the lightning current of the equipment on line in real time is achieved, the safety of the system is improved, and the condition that safety accidents are caused due to the fact that the lightning protection power grid assembly is abnormal and is not processed in time is avoided.

This embodiment discloses lightning current monitoring devices is connected with the equipment that awaits measuring, includes: the sensor is used for monitoring the current change rate of the lightning current of the equipment to be tested; an integrator connected to the sensor for converting the current conversion rate to a voltage conversion rate; and the control module is connected with the integrator and used for analyzing the voltage conversion rate and displaying waveform information. According to the lightning current monitoring device provided by the embodiment of the invention, the condition that the system or the equipment is subjected to lightning impulse or surge impulse is monitored on line, and the data information is uploaded and stored in real time, so that the technical problem that the condition of the lightning current is monitored in the prior art is usually in an off-line state is solved, the effect of monitoring the lightning current of the equipment on line in real time is realized, and the safety of the system and the experience of a user are improved.

Example two

Fig. 2 is a module connection diagram of a lightning current monitoring device according to a second embodiment of the present invention, which is applicable to monitoring a lightning current condition of a device in real time in this embodiment, in which more functional modules are added to the lightning current monitoring device according to the first embodiment to implement other functions, and the lightning current monitoring device according to the second embodiment is connected to a device 4 to be tested, and includes: the device comprises a sensor 1, an integrator 2, a control module 3, an AD sampler 5, a power module 6, a conversion module 7, a storage module, a clock module 8 and a communication module 9.

The sensor 1 is used for monitoring the current change rate of the lightning current of the device 4 to be tested. The sensor 1 is connected to the ground wire of the device under test 4.

An integrator 2 is connected to the sensor 1 for converting the current rate of conversion to a voltage rate of conversion.

And the control module 3 is connected with the integrator 2 and is used for analyzing the voltage conversion rate and displaying waveform information.

An AD sampler 5 is connected between the integrator 2 and the control module 3 for converting the voltage conversion ratio into a rapidly varying voltage signal.

In the present embodiment, the AD sampler 5 is composed of a high-speed AD acquisition circuit, and the AD acquisition circuit is mainly used for converting the current in the circuit into a voltage signal by using a sampling element, and then converting the voltage signal into a corresponding digital signal by using ADC quantization. Illustratively, a resistor is connected in series in the circuit, and the flowing current forms a corresponding voltage on the resistor; in addition, the conversion can be carried out by devices such as a current transformer and a Hall element, and corresponding voltage can be obtained. The general CPU and MCU can only recognize digital signals, and the voltage conversion rate obtained by the integrator 2 is an analog signal, and at this time, the analog signal needs to be converted into a digital signal by the AD sampler 5 and then input into the control module 3 for analysis and recognition.

And the power supply module 6 is connected with the control module 3 and used for providing a direct-current working power supply.

In this embodiment, the power module 6 is a 24V dc power supply, and may be provided by a storage battery or by being connected to a dc power grid. And a direct current power supply provided by the power supply module 6 is transmitted to the control module 3 for the normal work of the control chip.

The conversion module 7 is connected with the power module 6 and is used for converting the direct-current working power supply into a direct-current working power supply.

In this embodiment, the conversion module 7 is a step-down transformer or a step-down circuit, and the step-down transformer is used as an example in this embodiment, and the step-down transformer converts a higher voltage at the finger input end into an ideal voltage with a relatively low output, so as to achieve the purpose of voltage reduction, and perform voltage conversion by the electromagnetic induction principle. Generally, the normal working voltage of the MCU and the CPU is 5V dc, and the direct transmission of the 24V dc voltage provided by the power module 6 to the MCU or the CPU may cause chip damage and cause unnecessary loss. In this embodiment, the step-down transformer converts the 24V dc power input by the power module 6 into a 5V dc power and inputs the dc power to the MCU in the control module 3, so that the MCU can work normally.

The storage module is connected with the control module 3 and is used for storing the waveform information.

In this embodiment, the memory module includes one or more memories and may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this embodiment, the storage module stores the peak value, polarity, rise time, half-peak time, energy ratio of the lightning current analyzed by the control module 3, the number of times of lightning invasion and corresponding time, and other important parameter information, so that operation and maintenance personnel can call the lightning current record at any time to check and analyze the lightning current record.

The clock module 8 is connected with the control module 3 and is used for recording the occurrence time of the voltage conversion rate.

In this embodiment, the clock module 8 is a real-time clock circuit, the clock circuit is an oscillating circuit that generates accurate motion like a clock, any operation is in time sequence, and the circuit for generating this time is the clock circuit. The clock circuit is generally composed of a crystal oscillator, a crystal oscillator control chip and a capacitor. In this embodiment, the clock circuit is connected to the control module 3, so that the specific time point of each lightning current hitting the device to be tested 4 can be recorded in real time, and the operation and maintenance personnel can conveniently inquire the time point.

The communication module 9 is connected with the control module 3 and used for establishing communication connection between the control module 3 and external equipment. The communication module 9 includes: the wireless communication module 91 is used for establishing wireless connection between the control module 3 and the external device, and the wired communication module 92 is used for establishing wired connection between the control module 3 and the external device.

In this embodiment, the wired communication module 92 is connected to a server or other terminal devices through a network cable or other transmission lines, and the server can monitor the working conditions of a plurality of lightning current detection devices and recorded lightning current data in real time. The wireless communication module 91 comprises a WiFi chip, a 4G chip or other communication chips, the working conditions of a plurality of lightning current detection devices can be sent to the mobile terminal of the operation and maintenance personnel in real time, and the operation and maintenance personnel can check the working conditions of each lightning current detection device in real time in the process of troubleshooting. In this embodiment, the control module 3 may be connected to any external device, such as a server, a cloud, a mobile terminal, etc., through the communication module 9, so as to realize real-time data transmission of each lightning current detection device, so as to monitor the condition that the system or the device is subjected to lightning impulse or surge impulse on line, and upload and store these pieces of information in real time.

This embodiment discloses lightning current monitoring devices is connected with the equipment that awaits measuring, includes: the sensor is used for monitoring the current change rate of the lightning current of the equipment to be tested; an integrator connected to the sensor for converting the current conversion rate to a voltage conversion rate; the control module is connected with the integrator and used for analyzing the voltage conversion rate and displaying waveform information; an AD sampler is connected between the integrator and the control module for converting the voltage conversion rate to a rapidly varying voltage signal. And the power supply module is connected with the control module and used for providing a direct-current working power supply. The conversion module is connected with the power module and used for converting the direct-current working power supply into a direct-current working power supply. The storage module is connected with the control module and used for storing the waveform information. And the clock module is connected with the control module and used for recording the occurrence time of the voltage conversion rate. The communication module is connected with the control module and used for establishing communication connection between the control module and external equipment. According to the lightning current monitoring device provided by the embodiment of the invention, the condition that the system or the equipment is subjected to lightning impulse or surge impulse is monitored on line, and the data information is uploaded and stored in real time, so that the technical problem that the condition of the lightning current is monitored in the prior art is usually in an off-line state is solved, the effect of monitoring the lightning current of the equipment on line in real time is realized, and the safety of the system and the experience of a user are improved.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.