Novel surge protector data acquisition device

Abstract

The utility model provides a novel surge protector data acquisition device which is internally provided with 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, an SPD deterioration state detection circuit, an SSD working state detection circuit, an equipment address detection circuit and a serial port communication circuit. 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 SPD degradation state detection circuit is used for transmitting the SPD degradation state to the central processing unit, and the SSD working state detection circuit is used for transmitting the SSD working state to the central processing unit; according to the application, the central processing unit can be ensured to have the function of acquiring the lightning stroke frequency and the lightning stroke peak value of the SPD under the lightning stroke current of 1-80kA, meanwhile, the central processing unit still has other acquisition functions, the degradation state detection of the SPD and the working state detection of the SSD can be carried out, and the acquisition device integrating the four functions can work normally.

Description

TECHNICAL FIELD

[0001] The utility model relates to data acquisition field especially relates to a novel surge protection device data acquisition 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 propagating 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 increasingly important. System or device failure due to accidental or unexpected surges can result in significant monetary loss to the system or device, and can even pose a risk to personal safety. To reduce these risks,

[0003] And the lightning occurs when a large 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.

[0004] When using surge protectors with detection functions, in order to ensure the required detection work, it is necessary to design various collection functions for different purposes, but in order to avoid the influence of lightning current and other irregular operations on the work of the equipment, various collection structures that are not affected by current changes need to be designed. SUMMARY

[0005] The utility model aims at providing a kind of novel surge protection device data acquisition device, can guarantee that central processing unit has the function of the lightning strike number and lightning strike peak value of SPD under 1-80kA lightning current, still has other collection functions, can carry out the deterioration state detection of SPD, SSD operating state detection, four functions are integrated acquisition device, can work normally.

[0006] In order to realize the above-mentioned purpose, the utility model provides a kind of novel surge protection device data acquisition device, SPD data acquisition device is equipped with central processing unit, power supply circuit, lightning strike counting and peak zero circuit, lightning current number and peak detection circuit, SPD deterioration state detection circuit, SSD operating state detection circuit, equipment address detection circuit and serial communication circuit, wherein:

[0007] The power supply circuit provides working input voltage for the central processing unit;

[0008] The lightning stroke current number and peak value detection circuit is used to provide the lightning stroke number and the lightning stroke peak value of each detection to the central processor, and store the lightning stroke number and the lightning stroke peak value in the central processor, and the lightning stroke count and peak value zero clearing circuit is used to clear the lightning stroke number and the lightning stroke peak value stored in the central processor;

[0009] The SPD degradation state detection circuit is used to transmit the SPD degradation state to the central processor, and the SSD working state detection circuit is used to transmit the SSD working state to the central processor;

[0010] The device address detection circuit is used to transmit the device address of the SPD data acquisition device to the central processor;

[0011] The central processor is connected with the external device through the serial communication circuit, that is, the central processor transmits the SPD degradation state, the SSD working state, the lightning stroke number, the lightning stroke peak value and the device address processed to the upper computer through the serial communication circuit.

[0012] Further, in the novel surge protector data acquisition device, the SPD data acquisition device is provided with an SSD working state detection circuit wiring port and an SPD degradation state detection circuit wiring port outside, the SSD working state detection circuit wiring port is electrically connected with the SSD working state detection circuit, that is, the SSD working state detection circuit wiring port transmits the detected SSD working state to the SSD working state detection circuit, and the SPD degradation state detection circuit wiring port is electrically connected with the SPD degradation state detection circuit, that is, the SPD degradation state detection circuit wiring port transmits the detected SPD degradation state to the SPD degradation state detection circuit.

[0013] Further, in the novel surge protector data acquisition device, the SSD working state detection circuit is provided with a light emitting diode, and the SPD data acquisition device is provided with an SSD working state indicating lamp outside, if the working state is closed, the light emitting diode in the SSD working state detection circuit emits light, the SSD working state indicating lamp is always bright, and the circuit of the SSD working state detection circuit is conducted, if the working state is disconnected, the light emitting diode in the SSD working state detection circuit does not emit light, the SSD working state indicating lamp is always dark, the circuit of the SSD working state detection circuit is not conducted, and the SSD working state detection circuit is electrically connected with the central processor.

[0014] Further, in the new surge protector data acquisition device, the SPD degradation state detection circuit is provided with a light emitting diode, and the SPD data acquisition device is provided with an SPD degradation state indicator lamp outside. If the degradation state is closed, the light emitting diode in the SPD degradation state detection circuit emits light, the SPD degradation state indicator lamp is always on, and the circuit of the SPD degradation state detection circuit is on. If the degradation state is open, the light emitting diode in the SPD degradation state detection circuit does not emit light, the SPD degradation state indicator lamp is always dark, the circuit of the SPD degradation state detection circuit is not on, and the SPD degradation state detection circuit is electrically connected with the central processing unit.

[0015] Further, in the new surge protector data acquisition device, the SPD data acquisition device is provided with an SPD lightning current frequency and peak detection circuit wiring port and a lightning peak frequency clearing button outside. The SPD lightning current frequency and peak detection circuit wiring port is electrically connected with the lightning current frequency and peak detection circuit, and the lightning peak frequency clearing button is electrically connected with the lightning count and peak clearing circuit.

[0016] Further, in the new surge protector data acquisition device, the lightning peak frequency clearing button is composed of one button. Long pressing the lightning peak frequency clearing button clears the lightning count and lightning peak.

[0017] Further, in the new surge protector data acquisition device, the lightning current frequency and peak detection circuit includes a primary voltage dividing circuit, a voltage rectifying circuit and a secondary voltage dividing circuit. The voltage dividing route of lightning current is hard coil, SPD lightning current frequency and peak detection circuit wiring port, primary voltage dividing circuit, voltage rectifying circuit, secondary voltage dividing circuit and the central processing unit in turn.

[0018] Further, in the new surge protector data acquisition device, the SPD data acquisition device is provided with a DIP switch outside. The DIP switch is electrically connected with the device address detection circuit. The DIP switch is composed of two sets of four-bit binary DIP switches. Different states of the DIP switch form a two-bit 16 hexadecimal device address of the SPD data acquisition device.

[0019] Further, in the new surge protector data acquisition device, the SPD data acquisition device is provided with a power circuit wiring port, a serial communication circuit wiring port, a program running lamp and a serial communication indicator lamp outside. The power circuit wiring port and the program running lamp are electrically connected with the power circuit. The serial communication circuit wiring port and the serial communication indicator lamp are electrically connected with the serial communication circuit.

[0020] Compared with the prior art, the beneficial effects of the utility model mainly show in: through the lightning current times and peak value detection circuit, SPD deterioration state detection circuit and SSD working state detection circuit that design guarantees data acquisition device can carry out SPD's deterioration state detection, SSD working state detection, SPD's lightning times and lightning peak value detection in turn, the acquisition device that four acquisition functions are fused into one, and guarantees its still can work normally under 1-80kA lightning current. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is working schematic view of new surge protector data acquisition device in the utility model;

[0022] Figure 2 It is structure schematic view of new surge protector data acquisition device in the utility model;

[0023] Figure 3 It is circuit schematic view of SSD working state detection circuit in the utility model;

[0024] Figure 4 It is circuit schematic view of SPD deterioration state detection circuit in the utility model;

[0025] Figure 5 It is circuit schematic view of lightning current times and peak value detection circuit carries out lightning current voltage division in the utility model;

[0026] Figure 6 It is working flow chart schematic view of lightning current times and peak value detection circuit carries out lightning current amplitude detection in the utility model. DETAILED DESCRIPTION

[0027] The utility model will be combined with schematic view to carry out more detailed description of new surge protector data acquisition device in the utility model, wherein the preferred embodiment of the utility model is shown, should understand that the skilled in the art can modify the utility model described herein, and still realize the advantageous effect of the utility model of the utility model. Therefore, the following description should be understood as the extensive knowledge of the skilled in the art, and not as the limitation of the utility model.

[0028] In the description of the utility model, it is necessary to explain that, for the direction word, if the term "center", "transverse", "vertical", "length", "width", "thickness", "upper", "lower", "front", "back", "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, only for the convenience of narrating the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and can not be understood as limiting the specific protection scope of the utility model.

[0029] In the utility model, except another explicit provision and limitation, if the term "assembly", "connection", "connection" term should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected, can also be mechanical connection, can be directly connected, can also be connected through the intermediate medium, can be two elements internally connected. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific situation.

[0030] The utility model is described in the following paragraphs with reference to the drawings in an exemplary manner. According to the following description, the advantages and features of the utility model 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 description of the utility model embodiments.

[0031] As shown in Figure 1 The utility model provides a novel surge protector data acquisition device, and SPD data acquisition device 1 is internally provided with central processing unit 13, power supply circuit 14, lightning count and peak zeroing circuit 15, lightning current frequency and peak detection circuit 16, SPD degradation state detection circuit 17, SSD working state detection circuit 18, equipment address detection circuit 19 and serial communication circuit 20. SPD is a surge protector, and SSD is a special protection device for SPD.

[0032] As shown in Figure 2 SPD data acquisition device 1 is externally provided with power supply circuit wiring port 2, serial communication circuit wiring port 3, SSD working state detection circuit wiring port 4, SPD degradation state detection circuit wiring port 5, SPD lightning current frequency and peak detection circuit wiring port 6, code switch 7, program running lamp 8, serial communication indicating lamp 9, SPD degradation state indicating lamp 10, SSD working state indicating lamp 11 and lightning peak frequency zeroing button 12.

[0033] Specifically, the power supply circuit 14 provides the central processor 13 with working input voltage in the range of 9V-36V; and the power supply circuit wiring port 2 and the program running lamp 8 are both electrically connected with the power supply circuit 14, as shown in Figure 1 The power supply circuit wiring port 2 is composed of port A and port B, and the program running lamp 8 flashes every 2S when the SPD data acquisition device 1 is connected to power supply through the power supply circuit 14.

[0034] Specifically, the lightning current frequency and peak value detection circuit 16 is used to provide the central processor 13 with the counted lightning frequency and the detected lightning peak value of each lightning, and store the lightning frequency and the lightning peak value in the EEPROM memory of the central processor 13; the lightning count and peak value clearing circuit 15 is used to clear the lightning count and the lightning peak value stored in the central processor 13; that is, the SPD lightning current frequency and peak value detection circuit wiring port 6 is electrically connected with the lightning current frequency and peak value detection circuit 16, as shown in Figure 2 The SPD lightning current frequency and peak value detection circuit wiring port 6 is composed of port L1 and port L2, and the lightning peak value frequency clearing button 12 is electrically connected with the lightning count and peak value clearing circuit 15.

[0035] Specifically, the SPD degradation state detection circuit 17 is used to transmit the SPD degradation state to the central processor 13, and the SSD working state detection circuit 18 is used to transmit the SSD working state to the central processor 13; as shown in Figures 2 to 4 The SSD working state detection circuit wiring port 4 is electrically connected with the SSD working state detection circuit 18, and the SSD working state detection circuit wiring port 4 is composed of port 13 and port 14, that is, the SSD working state detection circuit wiring port 4 transmits the detected SSD working state to the SSD working state detection circuit 18; the SPD degradation state detection circuit wiring port 5 is electrically connected with the SPD degradation state detection circuit 17, and the SPD degradation state detection circuit wiring port 5 is composed of port 11 and 12, that is, the SPD degradation state detection circuit wiring port 5 transmits the detected SPD degradation state to the SPD degradation state detection circuit 17.

[0036] Specifically, the device address detection circuit 19 is used to transmit the device address of the SPD data acquisition device 1 to the central processor 13.

[0037] Specifically, the central processor 13 is connected with external devices through the serial communication circuit 20, and the serial communication circuit wiring port 3 and the serial communication indicating lamp 9 are both electrically connected with the serial communication circuit 20, that is, the central processor 13 transmits the processed SPD degradation state, SSD working state, lightning frequency, lightning peak value and device address to the upper computer through the serial communication circuit 20. As shown in Figure 2As shown, the serial communication circuit wiring port 3 is composed of port + and port -. When the SPD data acquisition device 1 communicates with the host computer through the serial communication circuit 20, the serial communication indicator light 9 flashes once.

[0038] Further, as shown in Figure 2 and Figure 3 Since the SSD working state detection circuit wiring port 4 transmits the detected SSD working state to the SSD working state detection circuit 18, and the light-emitting diode is provided in the SSD working state detection circuit 18, the SPD data acquisition device 1 is provided with the SSD working state indicator light 11. If the working state is closed, the light-emitting diode in the SSD working state detection circuit 18 emits light, the SSD working state indicator light 11 is always on, and the circuit of the SSD working state detection circuit 18 is on. If the working state is open, the light-emitting diode in the SSD working state detection circuit 18 does not emit light, the SSD working state indicator light 11 is always off, and the circuit of the SSD working state detection circuit 18 is not on. At the same time, the SSD working state detection circuit 18 is electrically connected with the central processor 13, that is, the photoelectric coupling circuit output part of the SSD working state detection circuit 18 is directly connected with the GPIO pin of the central processor 13.

[0039] Further, as shown in Figure 2 and Figure 4 Since the SPD degradation state detection circuit wiring port 5 transmits the detected SPD degradation state to the SPD degradation state detection circuit 17, and the light-emitting diode is provided in the SPD degradation state detection circuit 17, the SPD data acquisition device 1 is provided with the SPD degradation state indicator light 10. If the degradation state is closed, the light-emitting diode in the SPD degradation state detection circuit 17 emits light, the SPD degradation state indicator light 10 is always on, and the circuit of the SPD degradation state detection circuit 17 is on. If the degradation state is open, the light-emitting diode in the SPD degradation state detection circuit 17 does not emit light, the SPD degradation state indicator light 10 is always off, and the circuit of the SPD degradation state detection circuit 17 is not on. At the same time, the SPD degradation state detection circuit 17 is electrically connected with the central processor 13, that is, the photoelectric coupling circuit output part of the SPD degradation state detection circuit 17 is directly connected with the GPIO pin of the central processor 13.

[0040] Further, as shown in Figure 2 The lightning peak value number clearing button 12 is composed of a button. After pressing the lightning peak value number clearing button 12 for more than 2 seconds, the lightning count and lightning peak value can be cleared.

[0041] Further, as shown in Figure 5As shown, the lightning current frequency and peak detection circuit 16 includes a primary voltage dividing circuit 22, a voltage rectifier circuit 23 and a secondary voltage dividing circuit 24, and the voltage dividing route of the lightning current is in sequence: the hard coil 21, the SPD lightning current frequency and peak detection circuit connection port 6, the primary voltage dividing circuit 22, the voltage rectifier circuit 23, the secondary voltage dividing circuit 24 and the central processing unit 13. That is, the hard coil 21 transmits the collected lightning voltage to the SPD lightning current frequency and peak detection circuit connection port 6, and then to the primary voltage dividing circuit 22 for the first voltage dividing to reduce the voltage; the voltage of the first voltage dividing is rectified by the voltage rectifier circuit 23, and then converted into a direct current voltage and transmitted to the secondary voltage dividing circuit 24, and the secondary voltage dividing circuit 24 divides the received voltage to 0-3.3V and transmits to the ADC sampling interface of the central processing unit 13.

[0042] Further, as shown in Figure 6 The working procedure of the central processing unit 13 for storing the lightning frequency and the lightning peak value provided by the lightning current frequency and peak detection circuit 16 is as follows:

[0043] S1: The central processing unit 13 collects the lightning data through the ADC sampling interface, the sampling frequency is 2MHz, and the average is 0.5 microsecond for one data without interruption;

[0044] S2: The collected data is grouped into an array every 5000 data, and one group is taken for operation processing to obtain the maximum value of the group;

[0045] S3: The maximum value of the group is taken as the lightning peak value and compared with the lightning triggering threshold value, if greater than the threshold value, S4 is entered; if not, S2 is entered to take the next group of data for processing;

[0046] S4: The lightning peak value of the group is written into the EEPROM memory of the central processing unit 13, and the lightning frequency is recorded;

[0047] S5: The data storage of the group is completed, and the next group of data is processed by repeating the steps.

[0048] Further, as shown in Figures 1 to 2 The dial switch 7 is electrically connected with the device address detection circuit 19, the dial switch 7 is composed of two sets of four-bit binary dial switches, and the two-bit 16 hexadecimal device address of the SPD data acquisition device 1 is composed through different states of the dial switch 7, and the device address range is 00~FF, wherein the 00 and FF addresses are designed as default 1.

[0049] The innovation points of the novel SPD data acquisition device are mainly as follows.

[0050] 1. The SPD data acquisition device adopts a 9-36V wide voltage design.

[0051] 2. The SPD data acquisition device of the utility model adopts the appearance design of 36mm shell.

[0052] 3. The acquisition function of the SPD data acquisition device of the utility model includes: SPD deterioration state detection, SSD working state detection, SPD lightning strike number and lightning strike peak value detection, four functions of the integrated acquisition device, wherein the amplitude of the lightning strike peak value detection is 1-80kA.

[0053] In summary, in the embodiment, the new surge protector data acquisition device is provided, the lightning strike current number and peak value detection circuit, the SPD deterioration state detection circuit and the SSD working state detection circuit are designed to ensure that the data acquisition device can sequentially perform the SPD deterioration state detection, the SSD working state detection, the SPD lightning strike number and lightning strike peak value detection, the four acquisition functions are integrated into one acquisition device, and the acquisition device can still work normally under the 1-80kA lightning strike current.

[0054] The above is only the preferred embodiment of the utility model, and does not limit the utility model. Any skilled person in the art can make any form of equivalent replacement, modification or change of the technical scheme and technical content disclosed by the utility model without departing from the technical scheme of the utility model, which still belongs to the protection scope of the utility model.

Claims

1. A novel surge protector data acquisition device, characterized by, The SPD data acquisition device (1) is internally provided with a central processor (13), a power supply circuit (14), a lightning strike counting and peak clearing circuit (15), a lightning strike current frequency and peak detection circuit (16), an SPD degradation state detection circuit (17), an SSD working state detection circuit (18), a device address detection circuit (19) and a serial communication circuit (20), wherein: The power supply circuit (14) provides working input voltage for the central processor (13); The lightning strike current frequency and peak detection circuit (16) is used for providing the counted lightning strike frequency and the detected lightning peak value each time to the central processor (13), and storing the lightning strike frequency and the lightning peak value in the central processor (13), and the lightning strike counting and peak clearing circuit (15) is used for clearing the lightning strike counting and the lightning peak value stored in the central processor (13); The SPD degradation state detection circuit (17) is used for transmitting the SPD degradation state to the central processor (13), and the SSD working state detection circuit (18) is used for transmitting the SSD working state to the central processor (13); The device address detection circuit (19) is used for transmitting the device address of the SPD data acquisition device (1) to the central processor (13); The central processor (13) is connected with an external device through the serial communication circuit (20), that is, the central processor (13) transmits the processed SPD degradation state, SSD working state, lightning strike frequency, lightning peak value and device address to an upper computer through the serial communication circuit (20).

2. The novel surge protector data acquisition device of claim 1, wherein, The SPD data acquisition device (1) is externally provided with an SSD working state detection circuit wiring port (4) and an SPD degradation state detection circuit wiring port (5), the SSD working state detection circuit wiring port (4) is electrically connected with the SSD working state detection circuit (18), that is, the SSD working state detection circuit wiring port (4) transmits the detected SSD working state to the SSD working state detection circuit (18); and the SPD degradation state detection circuit wiring port (5) is electrically connected with the SPD degradation state detection circuit (17), that is, the SPD degradation state detection circuit wiring port (5) transmits the detected SPD degradation state to the SPD degradation state detection circuit (17).

3. The novel surge protector data acquisition device of claim 2, wherein, The SSD working state detection circuit (18) is provided with a light emitting diode, the SPD data acquisition device (1) is provided with an SSD working state indicator light (11) outside, if the working state is closed, the light emitting diode in the SSD working state detection circuit (18) emits light, the SSD working state indicator light (11) is always bright, and the circuit of the SSD working state detection circuit (18) is conducted;If the working state is open, the light emitting diode in the SSD working state detection circuit (18) does not emit light, the SSD working state indicator light (11) is always dark, the circuit of the SSD working state detection circuit (18) is not conducted, and the SSD working state detection circuit (18) is electrically connected with the central processing unit (13).

4. The novel surge protector data acquisition device of claim 2, wherein, The SPD deterioration state detection circuit (17) is provided with a light emitting diode, the SPD data acquisition device (1) is provided with an SPD deterioration state indicator light (10) outside, if the deterioration state is closed, the light emitting diode in the SPD deterioration state detection circuit (17) emits light, the SPD deterioration state indicator light (10) is always bright, and the circuit of the SPD deterioration state detection circuit (17) is conducted;If the deterioration state is open, the light emitting diode in the SPD deterioration state detection circuit (17) does not emit light, the SPD deterioration state indicator light (10) is always dark, the circuit of the SPD deterioration state detection circuit (17) is not conducted, and the SPD deterioration state detection circuit (17) is electrically connected with the central processing unit (13).

5. The novel surge protector data acquisition device of claim 1, wherein, The SPD data acquisition device (1) is provided with an SPD lightning current frequency and peak value detection circuit wiring port (6) and a lightning peak value frequency clearing button (12) outside, the SPD lightning current frequency and peak value detection circuit wiring port (6) is electrically connected with the lightning current frequency and peak value detection circuit (16), and the lightning peak value frequency clearing button (12) is electrically connected with the lightning count and peak value clearing circuit (15).

6. The novel surge protector data acquisition device of claim 5, wherein, The lightning peak value frequency clearing button (12) is composed of a button, and the lightning count and lightning peak value are cleared by long pressing the lightning peak value frequency clearing button (12).

7. The novel surge protector data acquisition device of claim 5, wherein, The lightning current frequency and peak value detection circuit (16) comprises a primary voltage dividing circuit (22), a voltage rectifying circuit (23) and a secondary voltage dividing circuit (24), and the voltage dividing route of lightning current is hard coil (21), SPD lightning current frequency and peak value detection circuit wiring port (6), primary voltage dividing circuit (22), voltage rectifying circuit (23), secondary voltage dividing circuit (24) and the central processing unit (13) in turn.

8. The novel surge protector data acquisition device of claim 1, wherein, The SPD data acquisition device (1) is provided with a DIP switch (7) outside, the DIP switch (7) is electrically connected with the device address detection circuit (19), the DIP switch (7) is composed of two sets of four-bit binary DIP switches, and two 16-bit device addresses of the SPD data acquisition device (1) are composed by different states of the DIP switch (7).

9. The novel surge protector data acquisition device of claim 1, wherein, The SPD data acquisition device (1) is externally provided with a power circuit wiring port (2), a serial communication circuit wiring port (3), a program running lamp (8) and a serial communication indicating lamp (9), the power circuit wiring port (2) and the program running lamp (8) are electrically connected with the power circuit (14), and the serial communication circuit wiring port (3) and the serial communication indicating lamp (9) are electrically connected with the serial communication circuit (20).

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