Novel surge protector lightning stroke current detection device

Abstract

The utility model provides a novel surge protector lightning stroke current detection device. A central processor, a power supply circuit, a lightning stroke counting and peak value clearing circuit, a lightning stroke current frequency and peak value detection circuit, a surge protector deterioration state detection circuit, an equipment address detection circuit and a serial port communication circuit are arranged in the lightning stroke current detection device. The lightning stroke current frequency and peak value detection circuit is used for providing the counted lightning stroke frequency and the lightning stroke peak value detected each time for the central processing unit; the lightning stroke counting and peak value clearing circuit is used for clearing the lightning stroke count and the lightning stroke peak value stored in the central processing unit; the surge protector degradation state detection circuit is used for transmitting the degradation state of the surge protector to the central processing unit; the equipment address detection circuit is used for transmitting the equipment address of the lightning stroke current detection device to the central processor. In the application, the design of the lightning stroke current frequency and peak detection circuit can ensure that the central processing unit can still work normally when collecting the amplitude of the lightning stroke current.

Description

TECHNICAL FIELD

[0001] The utility model relates to lightning current equipment field especially relates to a novel surge protection device lightning current detection device. BACKGROUND

[0002] Surge protectors help prevent damage to electronic equipment caused by current and voltage variations due to lightning strikes, switching surges, transients, noise, improper connections or other abnormal conditions or faults propagated on power or transmission lines. With the increasing number of electronic systems and devices in commercial and industrial societies, the need for effective, efficient protection against surges becomes more and more important. System or device failure due to accidental or unexpected surges can cause significant monetary loss to the system or device, and can even affect personal safety. In order to reduce these risks,

[0003] And lightning will produce a larger lightning current, may damage power equipment, in order to reduce the loss caused by lightning, in addition to the need for lightning protection device protection, usually also need to monitor lightning, through the monitoring results to analyze the characteristics and activity law of lightning and the lightning weak point of power grid, according to the analysis to select more effective lightning protection measures, in order to establish a more perfect lightning protection device. SUMMARY

[0004] The utility model aims at providing a novel surge protection device lightning current detection device, lightning current is gathered, and the lightning current times and peak detection circuit are divided into rectification through voltage division, the collection of lightning times and lightning current is realized, so as to obtain lightning current peak value.

[0005] In order to realize the above-mentioned purpose, the utility model provides a novel surge protection device lightning current detection device, lightning current detection device is equipped with central processing unit, power supply circuit, lightning count and peak zero circuit, lightning current times and peak detection circuit, surge protection device deterioration state detection circuit, equipment address detection circuit, serial communication circuit, wherein:

[0006] The power supply circuit provides working input voltage for the central processing unit;

[0007] The lightning current times and peak detection circuit is used for providing the lightning times counted and the lightning peak value detected each time to the central processing unit, and the lightning times and the lightning peak value are stored in the central processing unit, and the lightning count and peak zero circuit is used for zeroing the lightning count and the lightning peak value stored in the central processing unit;

[0008] The surge protection device deterioration state detection circuit is used for transmitting the deterioration state of the surge protection device to the central processing unit;

[0009] The device address detection circuit is configured to transmit the device address of the lightning current detection device to the central processor.

[0010] The central processor is connected with an external device through the serial communication circuit.

[0011] Further, in the lightning current detection device of the new surge protector, a lightning current frequency and peak value detection circuit wiring port and a lightning count and peak value zeroing button are arranged outside the lightning current detection device, the lightning current frequency and peak value detection circuit wiring port is electrically connected with the lightning current frequency and peak value detection circuit, and the lightning count and peak value zeroing button is electrically connected with the lightning count and peak value zeroing circuit.

[0012] Further, in the lightning current detection device of the new surge protector, the lightning count and peak value zeroing button is composed of one button, and the lightning count and peak value zeroing is performed by long pressing the lightning count and peak value zeroing button.

[0013] Further, in the lightning current detection device of the new surge protector, the lightning current frequency and peak value detection circuit comprises a primary voltage dividing circuit, a voltage rectifying circuit and a secondary voltage dividing circuit, and the lightning current voltage dividing route is in sequence of a hard coil, the lightning current frequency and peak value detection circuit wiring port, the primary voltage dividing circuit, the voltage rectifying circuit, the secondary voltage dividing circuit and the central processor.

[0014] Further, in the lightning current detection device of the new surge protector, a surge protector deterioration state detection circuit wiring port is arranged outside the lightning current detection device, the surge protector deterioration state detection circuit wiring port is electrically connected with the surge protector deterioration state detection circuit, that is, the surge protector deterioration state detection circuit wiring port transmits the detected surge protector deterioration state to the surge protector deterioration state detection circuit.

[0015] Further, in the lightning current detection device of the new surge protector, a light emitting diode is arranged in the surge protector deterioration state detection circuit, the light emitting diode emits light and the circuit of the surge protector deterioration state detection circuit is conducted if the deterioration state is closed, and the light emitting diode does not emit light and the circuit of the surge protector deterioration state detection circuit is not conducted if the deterioration state is open, the surge protector deterioration state detection circuit is electrically connected with the central processor.

[0016] Further, in the new surge protector lightning current detection device, a dial switch is arranged outside the lightning current detection device, the dial switch is electrically connected with the equipment address detection circuit, the dial switch is composed of two sets of four-bit binary dial switches, and two 16-bit equipment addresses of the lightning current detection device are formed by different states of the dial switch.

[0017] Further, in the new surge protector lightning current detection device, a power circuit wiring port and a serial communication circuit wiring port are arranged outside the lightning current detection device, the power circuit wiring port is electrically connected with the power circuit, and the serial communication circuit wiring port is electrically connected with the serial communication circuit.

[0018] Further, in the new surge protector lightning current detection device, the central processing unit transmits the processed SPD working state, lightning times, lightning peak value and equipment address to an upper computer through the serial communication circuit.

[0019] Compared with the prior art, the new surge protector lightning current detection device has the following beneficial effects: lightning current is collected, voltage division and rectification are performed on the lightning current through a lightning current times and peak value detection circuit, lightning times and lightning current are collected, and a lightning current peak value is obtained, so that the central processing unit can still work normally while having a 1-80kA lightning current collection lightning current amplitude function. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a working schematic diagram of the new surge protector lightning current detection device in the utility model;

[0021] Figure 2 Fig. 2 is a structural schematic diagram of the new surge protector lightning current detection device in the utility model;

[0022] Figure 3 Fig. 3 is a circuit schematic diagram of the surge protector deterioration state detection circuit in the utility model;

[0023] Figure 4 Fig. 4 is a circuit schematic diagram of lightning current voltage division of the lightning current times and peak value detection circuit in the utility model;

[0024] Figure 5 Fig. 5 is a working flowchart of lightning current amplitude detection of the lightning current times and peak value detection circuit in the utility model. DETAILED DESCRIPTION

[0025] The novel surge protector lightning current detection device of the present application will be described in more detail below in conjunction with the schematic drawings, wherein the preferred embodiments of the present application are shown, it should be understood that the present application described herein can be modified by those skilled in the art, and still achieve the advantageous effects of the present application. Therefore, the following description should be understood as a broad knowledge for those skilled in the art, and not as a limitation of the present application.

[0026] In the description of the present application, it should be pointed out that for the terms of orientation, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0027] The present application will be described in more detail in the following paragraphs with reference to the drawings. According to the following description, the advantages and features of the present application will be more apparent. It should be noted that the drawings are very simplified and all use non-precise proportions, only for the purpose of facilitating, clearly assisting the purpose of illustrating the embodiments of the present application.

[0028] As shown in Figure 1 The present application proposes a novel surge protector lightning current detection device, the lightning current detection device 1 is provided with a central processing unit 8, a power supply circuit 9, a lightning count and peak zero circuit 10, a lightning current frequency and peak detection circuit 11, a surge protector degradation state detection circuit 12, a device address detection circuit 13, a serial communication circuit 14.

[0029] As shown in Figure 2 The lightning current detection device 1 is provided with a power supply circuit wiring port 2, a serial communication circuit wiring port 3, a surge protector degradation state detection circuit wiring port 4, a dial switch 5, a surge protector lightning current frequency and peak detection circuit wiring port 6, and a lightning count and peak zero key 7.

[0030] The power supply circuit 9 provides working input voltage for the central processing unit 8, the voltage range is 5V-18V; that is, the power supply circuit wiring port 2 is electrically connected with the power supply circuit 9, the power supply circuit wiring port 2 is composed of port + and port -;

[0031] The lightning current frequency and peak value detection circuit 11 is used to provide the lightning frequency and the lightning peak value of each detection to the central processor 8, and store the lightning frequency and the lightning peak value in the EEPROM memory of the central processor 8. The lightning count and peak value clearing circuit 10 is used to clear the lightning count and the lightning peak value stored in the EEPROM memory of the central processor 8. That is, the lightning current frequency and peak value detection circuit connection port 6 is electrically connected with the lightning current frequency and peak value detection circuit 11. The lightning current frequency and peak value detection circuit connection port 6 is composed of the port L1 and the port L2. The lightning count and peak value clearing button 7 is electrically connected with the lightning count and peak value clearing circuit 10.

[0032] The SPD deterioration state detection circuit 12 is used to transmit the SPD deterioration state to the central processor 8. The SPD deterioration state detection circuit connection port 4 is electrically connected with the SPD deterioration state detection circuit 12. The SPD deterioration state detection circuit connection port 4 is composed of the port 11 and the port 12. That is, the SPD deterioration state detection circuit connection port 4 transmits the detected SPD deterioration state to the SPD deterioration state detection circuit 12.

[0033] The device address detection circuit 13 is used to transmit the device address of the lightning current detection device 1 to the central processor 8.

[0034] The central processor 8 is connected with the external device through the serial communication circuit 14. The serial communication circuit connection port 3 is electrically connected with the serial communication circuit 14. The serial communication circuit connection port 3 is composed of the port A and the port B. That is, the central processor 8 transmits the processed SPD working state, the lightning frequency, the lightning peak value and the device address to the upper computer through the serial communication circuit 14.

[0035] Further, as shown in Figure 2 The lightning count and peak value clearing button 7 is composed of one button. The lightning count and peak value can be cleared by pressing the lightning count and peak value clearing button 72s or more.

[0036] Further, as shown in Figure 4As shown, the lightning current frequency and peak detection circuit 11 includes a primary voltage dividing circuit 16, a voltage rectifier circuit 17 and a secondary voltage dividing circuit 18, and the voltage dividing route of the lightning current is hard coil 15, surge protector lightning current frequency and peak detection circuit connection port 6, primary voltage dividing circuit 16, voltage rectifier circuit 17, secondary voltage dividing circuit 18 and central processing unit 8 in turn. That is, the hard coil 15 transmits the collected lightning voltage to the surge protector lightning current frequency and peak detection circuit connection port 6, and then to the primary voltage dividing circuit 16 for the first voltage dividing to reduce the voltage; the voltage rectifier circuit 17 completes the rectification of the voltage after the first voltage dividing, converts the voltage into a direct current voltage and transmits it to the secondary voltage dividing circuit 18, and the secondary voltage dividing circuit 18 divides the received voltage to 0-3.3V and transmits it to the ADC sampling interface of the central processing unit 8.

[0037] Further, as shown in FIG. 6, the surge protector deterioration state detection circuit 12 includes a primary voltage dividing circuit 19, a voltage rectifier circuit 20 and a secondary voltage dividing circuit 21, and the voltage dividing route of the surge protector deterioration state detection circuit 12 is surge protector deterioration state detection circuit connection port 4, primary voltage dividing circuit 19, voltage rectifier circuit 20, secondary voltage dividing circuit 21 and central processing unit 8 in turn. That is, the primary voltage dividing circuit 19 divides the voltage received from the surge protector deterioration state detection circuit connection port 4 to 0-3.3V, and the voltage rectifier circuit 20 rectifies the voltage after the first voltage dividing and converts it into a direct current voltage, and the secondary voltage dividing circuit 21 divides the voltage to 0-3.3V and transmits it to the ADC sampling interface of the central processing unit 8. Figure 5 Further, as shown in FIG. 6, the surge protector deterioration state detection circuit 12 includes a primary voltage dividing circuit 19, a voltage rectifier circuit 20 and a secondary voltage dividing circuit 21, and the voltage dividing route of the surge protector deterioration state detection circuit 12 is surge protector deterioration state detection circuit connection port 4, primary voltage dividing circuit 19, voltage rectifier circuit 20, secondary voltage dividing circuit 21 and central processing unit 8 in turn. That is, the primary voltage dividing circuit 19 divides the voltage received from the surge protector deterioration state detection circuit connection port 4 to 0-3.3V, and the voltage rectifier circuit 20 rectifies the voltage after the first voltage dividing and converts it into a direct current voltage, and the secondary voltage dividing circuit 21 divides the voltage to 0-3.3V and transmits it to the ADC sampling interface of the central processing unit 8.

[0038] S1: The central processing unit 8 collects lightning data through the ADC sampling interface, the sampling frequency is 2MHz, and the average is 0.5 microseconds for one data without interruption;

[0039] S2: The collected data is divided into an array every 5000 data, and one group is taken for operation and processing to obtain the maximum value of the group;

[0040] S3: The maximum value is compared with the lightning trigger threshold value, if greater than the threshold value, enter S4; if not, enter S2 to take the next group of data for processing;

[0041] S4: The lightning peak value is written into the EEPROM memory of the central processing unit 8, and the lightning frequency is recorded at the same time;

[0042] S5: The group of data storage is completed, and the next group of data processing is repeated.

[0043] Further, as shown in FIG. 6, the surge protector deterioration state detection circuit 12 includes a primary voltage dividing circuit 19, a voltage rectifier circuit 20 and a secondary voltage dividing circuit 21, and the voltage dividing route of the surge protector deterioration state detection circuit 12 is surge protector deterioration state detection circuit connection port 4, primary voltage dividing circuit 19, voltage rectifier circuit 20, secondary voltage dividing circuit 21 and central processing unit 8 in turn. That is, the primary voltage dividing circuit 19 divides the voltage received from the surge protector deterioration state detection circuit connection port 4 to 0-3.3V, and the voltage rectifier circuit 20 rectifies the voltage after the first voltage dividing and converts it into a direct current voltage, and the secondary voltage dividing circuit 21 divides the voltage to 0-3.3V and transmits it to the ADC sampling interface of the central processing unit 8. Figure 3 Further, as shown in FIG. 6, the surge protector deterioration state detection circuit 12 includes a primary voltage dividing circuit 19, a voltage rectifier circuit 20 and a secondary voltage dividing circuit 21, and the voltage dividing route of the surge protector deterioration state detection circuit 12 is surge protector deterioration state detection circuit connection port 4, primary voltage dividing circuit 19, voltage rectifier circuit 20, secondary voltage dividing circuit 21 and central processing unit 8 in turn. That is, the primary voltage dividing circuit 19 divides the voltage received from the surge protector deterioration state detection circuit connection port 4 to 0-3.3V, and the voltage rectifier circuit 20 rectifies the voltage after the first voltage dividing and converts it into a direct current voltage, and the secondary voltage dividing circuit 21 divides the voltage to 0-3.3V and transmits it to the ADC sampling interface of the central processing unit 8.

[0044] Further, as shown in Figures 1 to 2 The dial switch 5 is composed of two sets of four-bit binary dial switches, and two-bit 16 hexadecimal device addresses of the lightning current detection device 1 are composed by different states of the dial switch 5, the range of the device address is 00~FF, wherein the 00 and FF addresses are designed as 1 by default, and the dial switch 5 is electrically connected with the device address detection circuit 13.

[0045] In summary, in the embodiment, the lightning current detection device of the new surge protector is proposed, lightning current is collected, and the lightning current times and peak detection circuit are divided and rectified, lightning times and lightning current are collected, and the lightning current peak is obtained. In order to ensure that the behavior of collecting lightning current does not affect the normal work of the surge protector itself, the lightning current detection device needs to be effectively divided and rectified, so that in the case of collecting and recording the time of lightning, the amplitude of lightning current, energy and other information, the device has the function of collecting lightning current amplitude of 1-80kA lightning current, and the central processing unit can still work normally.

[0046] The above is only the preferred embodiment of the present application, and does not limit the present application. Any skilled person in the art, without departing from the technical solution of the present application, can make any form of equivalent replacement or modification of the technical solution and technical content disclosed in the present application, and still belong to the protection scope of the present application.

Claims

1. A novel surge protector lightning current detection device, characterized in that, The lightning current detection device (1) includes a central processing unit (8), a power supply circuit (9), a lightning strike counting and peak value clearing circuit (10), a lightning strike current count and peak value detection circuit (11), a surge protector degradation status detection circuit (12), a device address detection circuit (13), and a serial communication circuit (14), wherein: The power supply circuit (9) provides the operating input voltage to the central processing unit (8); The lightning strike current count and peak detection circuit (11) is used to provide the central processing unit (8) with the statistical number of lightning strikes and the peak value of each lightning strike, and store the number of lightning strikes and the peak value of each lightning strike in the central processing unit (8). The lightning strike count and peak value clearing circuit (10) is used to clear the lightning strike count and lightning strike peak value stored in the central processing unit (8). The surge protector degradation status detection circuit (12) is used to transmit the degradation status of the surge protector to the central processing unit (8); The device address detection circuit (13) is used to transmit the device address of the lightning current detection device (1) to the central processing unit (8); The central processing unit (8) is connected to external devices through the serial communication circuit (14).

2. The novel surge protector lightning current detection device according to claim 1, characterized in that, The lightning current detection device (1) is provided with a surge protector lightning current count and peak detection circuit wiring port (6) and a lightning count and peak reset key (7) on the outside. The surge protector lightning current count and peak detection circuit wiring port (6) is electrically connected to the lightning current count and peak detection circuit (11), and the lightning count and peak reset key (7) is electrically connected to the lightning count and peak reset circuit (10).

3. The novel surge protector lightning current detection device according to claim 2, characterized in that, The lightning strike count and peak value clearing key (7) consists of a button. Press and hold the lightning strike count and peak value clearing key (7) to clear the lightning strike count and peak value.

4. The novel surge protector lightning current detection device according to claim 2, characterized in that, The lightning strike current count and peak detection circuit (11) includes a primary voltage divider circuit (16), a voltage rectifier circuit (17), and a secondary voltage divider circuit (18). The voltage divider route of the lightning strike current is, in sequence, a rigid coil (15), a surge protector lightning strike current count and peak detection circuit connection port (6), a primary voltage divider circuit (16), a voltage rectifier circuit (17), a secondary voltage divider circuit (18), and the central processing unit (8).

5. The novel surge protector lightning current detection device according to claim 1, characterized in that, The lightning current detection device (1) is provided with a surge protector deterioration state detection circuit connection port (4) on the outside. The surge protector deterioration state detection circuit connection port (4) is electrically connected to the surge protector deterioration state detection circuit (12). That is, the surge protector deterioration state detection circuit connection port (4) transmits the detected surge protector deterioration state to the surge protector deterioration state detection circuit (12).

6. The novel surge protector lightning current detection device according to claim 5, characterized in that, The surge protector degradation state detection circuit (12) is equipped with a light-emitting diode. If the degradation state is closed, the light-emitting diode emits light and the circuit of the surge protector degradation state detection circuit (12) is turned on. If the degradation state is open, the light-emitting diode does not emit light and the circuit of the surge protector degradation state detection circuit (12) is not turned on. The surge protector degradation state detection circuit (12) is electrically connected to the central processing unit (8).

7. The novel surge protector lightning current detection device according to claim 1, characterized in that, The lightning current detection device (1) is provided with a DIP switch (5) on the outside. The DIP switch (5) is electrically connected to the device address detection circuit (13). The DIP switch (5) is composed of two sets of four-bit binary DIP switches. The two-bit hexadecimal device address of the lightning current detection device (1) is formed by the different states of the DIP switch (5).

8. The novel surge protector lightning current detection device according to claim 1, characterized in that, The lightning current detection device (1) is provided with a power circuit connection port (2) and a serial communication circuit connection port (3) on its outside. The power circuit connection port (2) is electrically connected to the power circuit (9), and the serial communication circuit connection port (3) is electrically connected to the serial communication circuit (14).

9. The novel surge protector lightning current detection device according to claim 1, characterized in that, The central processing unit (8) transmits the processed SPD working status, number of lightning strikes, peak lightning strike value, and device address to the host computer through the serial communication circuit (14).

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