CN220543038U - Detection device for judging degradation condition of SPD and SPD system - Google Patents

Abstract

The utility model relates to a detection device and SPD system for judging the degradation condition of SPD, wherein the detection device for judging the degradation condition of SPD comprises: the device comprises a detection module, a processing module and a communication module; the detection module comprises an optical coupling device; the processing module is a 2.4G wireless transceiver module; the input end of the optical coupling device is used for inputting SPD detection signals; the output end of the optical coupling device is used as a detection data output end and is connected with the processing data input end of the processing module; the processing data output end of the processing module is connected with the transmission data input end of the communication module; the communication module is used for adjusting the frequency of the processing data output by the processing module and sending the processing data. An operator can remotely receive the degradation state information of the SPD, so that the function of remotely monitoring whether the SPD is degraded or not is realized.

Description

Detection device for judging degradation condition of SPD and SPD system

Technical Field

The utility model relates to a circuit protection device, in particular to a detection device for judging degradation of an SPD and an SPD system.

Background

Lightning damage is a natural disaster. The release of thunder and lightning has serious threat to human beings, lightning induction surge attached to thunder and lightning has strong destructive power to electronic equipment, and in recent years, along with the improvement of precision of the electronic equipment, the requirement on lightning safety is also higher and higher.

The installation of the SPD (Surge protection Device, surge protector) module is an important measure for preventing electric equipment from lightning induced surge, the SPD is an electronic device for providing safety protection for various electronic equipment, instruments and communication lines, and when the outside is interfered by lightning stroke or over current or over voltage is suddenly generated, the SPD can conduct and discharge current in a very short time, so that other equipment in a loop is prevented from being damaged by the surge. However, when a large system composed of many electric devices is faced, each device may be separately provided with an SPD, and when one or more SPDs of the devices are damaged, an operator often cannot know the damage condition of the SPD in time, and cannot locate the specific position of the damaged SPD.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model discloses a detection device and an SPD system for judging the degradation condition of an SPD.

The technical scheme adopted by the utility model is as follows:

a detection device for judging degradation of SPD comprises: the device comprises a detection module, a processing module and a communication module; the detection module comprises an optical coupling device; the processing module is a 2.4G wireless transceiver module; the input end of the optical coupling device is used for inputting SPD detection signals; the output end of the optical coupling device is used as a detection data output end and is connected with the processing data input end of the processing module; the processing data output end of the processing module is connected with the transmission data input end of the communication module; the communication module is used for adjusting the processing data output by the processing module and transmitting the processing data in a wireless mode.

The further technical scheme is that the detection module further comprises an input terminal; the anode input end of the optical coupling device is connected with the working voltage; the cathode input end of the optical coupling device is connected with the input terminal; the first output end of the optical coupling device is connected with the working voltage; the first output end of the optical coupling device is connected with the detection data input end of the processing module; the second output end of the optical coupling device is grounded; the input terminal is used for inputting an SDP detection signal.

The communication module comprises a first inductor, a second inductor, a first capacitor, a second capacitor and a third capacitor; two ends of the first inductor are transmission data input ends of the communication module; the first end of the first capacitor is connected with the first end of the first inductor; the first end of the second capacitor is connected with the second end of the first inductor; two ends of the third capacitor are respectively connected with the first end of the first capacitor and the second end of the second capacitor; the second end of the second capacitor is grounded; the first end of the second inductor is connected with the first end of the first inductor, and the second end of the second inductor is grounded.

The further technical scheme is that the detection device further comprises an antenna connected to the second end of the first capacitor.

The further technical scheme is that the detection device further comprises a storage module; the storage module is used for storing the identification code of the SPD; the data transmission end of the storage module is connected with the data transmission end of the processing module.

The further technical scheme is that the processing module comprises a processing chip with the model of nRF24E 1; the ninth pin of the processing chip is used as a detection data input end of the processing module and is connected with a detection data output end of the detection module; and a nineteenth pin and a twentieth pin of the processing chip are used as processing data output ends and are connected with a transmission data input end of the communication module.

The further technical scheme is that the detection device further comprises a storage module; the memory module comprises a memory chip with the model number of 25AA 320; and the fourth pin, the fifth pin, the sixth pin and the thirty-sixth pin of the processing chip are used as data transmission ends of the processing module and are sequentially connected with the sixth pin, the fifth pin, the first pin and the second pin of the storage module respectively.

The further technical scheme is that the processing module further comprises a clock module; the clock module comprises a crystal oscillator, a first resistor, a sixth capacitor and a seventh capacitor; the sixteenth pin and the seventeenth pin of the processing chip are respectively connected with the two ends of the crystal oscillator; the first resistor is connected in parallel with two ends of the crystal oscillator; the two ends of the first resistor are grounded through a sixth capacitor and a seventh capacitor respectively.

The detection device further comprises a power supply module; the power supply module provides working power for the processing module.

An SPD system having a detection device mounted thereto, the SPD system comprising an SPD comprising remote signaling terminals connected to a detection data input of a detection module according to any one of the above claims.

The beneficial effects of the utility model are as follows:

1. when the SPD is degraded, the switching value in the SPD is changed, a remote signaling signal output by the remote signaling terminal of the SPD is changed, the voltage received by the input end of the optical coupling device is changed, the state of the light emitting diode in the optical coupling device is changed, the output level of the output end of the optical coupling device is changed, and the processing module recognizes the change of the level, so that the judgment process of the current degradation condition of the SPD is realized. The communication module transmits the data processed by the processing module, so that an operator can remotely receive the degradation state information of the SPD, and the function of remotely monitoring whether the SPD is degraded or not is realized.

2. Furthermore, the utility model can realize the function of locating the degraded SPD. The storage module stores the corresponding SPD identification code therein, the SPD identification code can be sent out together with the SPD degradation state information through the communication module, when an operator receives the SPD degradation state information remotely, the SPD identification code can also be received together, after the system PC side acquires the identification code, a series of information related to the SPD can be called out, which position of the SPD is degraded, the investigation work can be done timely, the maintenance can be carried out pertinently, and the fault can be solved rapidly.

3. The clock module of the processing chip adopts the crystal oscillator with high precision, so that the frequency reference provided by the clock module is high, the clock module supports high transmission rate, and the clock module can quickly respond to whether the SPD is damaged or not.

4. The SPD system provided by the utility model, wherein the SPD device is provided with the detection device, can enable the SPD system to have degradation condition detection, and can be remotely monitored and positioned. The SPD system has the function of wireless positioning, is suitable for detection and early warning of the lightning protection device in the lightning stroke state, realizes the life pre-judging detection of the SPD, and can be used for various occasions such as power systems, electrical equipment, lightning protection equipment and the like. Meanwhile, the safety and reliability of electricity consumption can be improved, and remote real-time monitoring service is realized, so that the higher requirements of users on intelligent lightning protection performance and stability are met.

Drawings

Fig. 1 is a block diagram of a detection apparatus for judging the degradation of an SPD according to embodiment 1.

Fig. 2 is a block diagram of a detecting device for judging degradation of SPD according to embodiment 2.

Fig. 3 is a circuit diagram of a detection device for judging the degradation of the SPD according to embodiment 2.

Fig. 4 is a circuit diagram of the detection module.

Fig. 5 is a circuit diagram of a processing chip.

Fig. 6 is a circuit diagram of a communication module.

Fig. 7 is a circuit diagram of a memory chip.

Fig. 8 is a block diagram of an SPD system with a detection device mounted.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

Example 1.

Fig. 1 is a block diagram of a detection apparatus for judging the degradation of an SPD according to embodiment 1. As shown in fig. 1, the detecting device for judging the degradation condition of the SPD comprises a detecting module 2, a processing module 3 and a communication module 4. The detection module 2 comprises an optical coupling device. The processing module 3 is a 2.4G wireless transceiver module.

The input end of the optical coupling device is used for inputting a detection signal of a remote signaling terminal of the SPD. The output end of the optical coupling device is used as a detection data output end and is connected with the processing data input end of the processing module 3. The optocoupler may receive the voltage signal of the SPD and output a high level or a low level according to whether the SPD is degraded or not, and the detected data output terminal is transmitted to the processing module 3. The processing module 3 processes the detection data sent by the detection module 2 into a periodic signal suitable for burst mode (ShockBurst) transmission. The processing data output end of the processing module 3 is connected with the transmission data input end of the communication module 4. The communication module 4 is used for adjusting the frequency of the processing data output by the processing module 3 and sending the processing data.

The working method of the embodiment is as follows: the detection data input end of the detection module 2 is connected with the remote signaling terminal of the SPD, when the SPD is degraded, the switching value in the SPD can be changed, the remote signaling signal output by the remote signaling terminal of the SPD can be changed, the voltage received by the input end of the optical coupling device can be changed, the luminous state of the middle light emitting diode of the optical coupling device can be changed, the output level of the output end of the optical coupling device can be changed, at the moment, the switching value data output by the detection data output end of the detection module 2 represents the information about whether the current SPD is degraded, the detection module 2 transmits the result about whether the SPD is degraded to the processing module 3 for processing, and the communication module 4 transmits the information processed by the processing module 3, so that operators can remotely receive the information about whether the SPD is degraded, and the detection of the SPD degradation condition and the remote monitoring of the SPD can be realized.

The power supply module 1 supplies electrical energy to the processing module 3. The processing module 3 comprises a voltage conversion module. After receiving the power supply voltage input by the power supply module 1, the voltage conversion module of the processing module 3 adjusts the voltage so that the voltage value is suitable for the working state of the detection module 2.

Further, a clock module for a high frequency reference may be provided for the processing module 3. The clock module is used for providing crystal oscillator signals, and the processing module 3 supports high transmission rate by adopting crystal oscillator signals with high precision and high frequency reference, so that accurate time calculation can be performed on SPD damage.

Example 2.

Fig. 2 is a block diagram of a detecting device for judging degradation of SPD according to embodiment 2. Embodiment 2 is based on embodiment 1, further comprising a memory module 5 for storing the SPD identification code.

The data transmission end of the storage module 5 is connected with the data transmission end of the processing module 3. The data transmission end of the memory module 5 is a serial data input/output pin, and the data transmission end of the processing module 3 is a digital-to-analog conversion pin. The processing module 3 reads the SPD identification code stored in the memory module 5 through the chip selection signal, processes the level signal representing the degradation condition of the SPD and the SPD identification code, and transmits the processed signal and the processed SPD identification code to the communication module 4, the communication module 4 is further connected with the antenna 7, and the communication module 4 simultaneously transmits the processed data transmitted by the processing module 3 through the antenna 7. When the operator receives the degradation information of the SPDs remotely, the operator can also receive the identification codes of the degraded SPDs together, knows which position of the SPDs is degraded through the identification codes, can carry out targeted maintenance, and realizes the function of quick positioning.

Example 3.

Fig. 3 is a circuit diagram of a detection device for judging the degradation of the SPD according to embodiment 2. Embodiment 3 is a circuit connection structure that can be embodied based on embodiment 2. It will be appreciated that embodiment 1 can also be realized by a similar circuit configuration.

As shown in fig. 2 and 3, in the present embodiment, the detection module 2 includes an optical coupling device U3 of a model TLP281 GR. The processing module 3 includes a processing chip U1 of model nRF24E 1. The memory module 5 includes a memory chip U2 of size 25AA 320.

Fig. 4 is a circuit diagram of the detection module. As shown in fig. 2 and 4, the detection module 2 further includes an input terminal J1. The anode input end of the optical coupling device U3 is connected with the working voltage VDD through a third resistor R5, the cathode input end of the optical coupling device U3 is connected with the input terminal J1, the first output end of the optical coupling device U3 is connected with the working voltage VDD through a fourth resistor R6, and the first output end of the optical coupling device U3 is used as a detection data output end of the detection module 2 and is connected with the processing module 3. The second output terminal of the optocoupler U3 is grounded. The input terminal J1 is used for accessing the SPD detection signal. The degradation signal of the SPD is connected to the cathode input terminal of the photo-coupling device U3 through the input terminal J1.

Fig. 5 is a circuit diagram of a processing chip. As shown in fig. 2 and 5, the first pin of the processing chip U1 is used as a power input terminal of the processing module 3 and is connected to a power output terminal of the power supply module 1. The ninth pin P0.3 of the processing chip U1 is used as a processing data input terminal of the processing module 3 and is connected with a detection data output terminal of the detection module 2. The fourth pin P1.0, the fifth pin P1.1, the sixth pin P0.0 and the thirty-sixth pin P1.2 of the processing chip U1 are used as data transmission ends of the processing module 3, and are connected with the data transmission ends of the memory module 5, so as to transmit chip selection signals to the memory module 5 and transmit SPD identification codes. The sixteenth pin XC2 and the seventeenth pin XC1 of the processing chip U1 are connected to the clock module, and are configured to receive the crystal oscillator signal.

The clock module comprises a crystal oscillator X1, a first resistor R1, a sixth capacitor C1 and a seventh capacitor C2. The two ends of the crystal oscillator X1 are respectively connected with a sixteenth pin XC2 and a seventeenth pin XC1 of the processing chip U1. The first resistor R1 is connected in parallel to two ends of the crystal oscillator X1. Both ends of the first resistor R1 are grounded through a sixth capacitor C1 and a seventh capacitor C2, respectively. In this embodiment, the crystal oscillator X1 is 16MB.

The nineteenth pin ANT1 and the twentieth pin ANT2 of the processing chip U1 are used as processing data output terminals and are connected to the transmission data input terminal of the communication module 4.

Fig. 6 is a circuit diagram of a communication module.

As shown in fig. 2, 3 and 6, the communication module 4 includes a first inductor L1, a second inductor L2, a first capacitor C11, a second capacitor C12, a third capacitor C13, a fourth capacitor C3 and a fifth capacitor C4.

Referring to fig. 3, two ends of the first inductor L1 are respectively connected to a nineteenth pin ANT19 and a twentieth pin ANT20 of the processing chip U1, a first end of the first capacitor C11 is connected to the first end of the first inductor L1, and a second end of the first capacitor C11 is connected to the antenna ANT. The first end of the second capacitor C12 is connected to the second end of the first inductor L1, and the second end of the second capacitor C12 is grounded. The two ends of the third capacitor C13 are respectively connected to the first end of the first capacitor C11 and the second end of the second capacitor C12. The first end of the second inductor L2 is connected with the first end of the first inductor L1, and the second end of the second inductor L2 is connected with the 18 th pin VDD_PA of the processing chip U1. The second end of the second inductor L2 is grounded through a fifth capacitor C4. The fourth capacitor C3 is connected in parallel to the fifth capacitor C4.

In this embodiment, the first inductance L1 is 3.6nH. The second inductance L2 is 22nH. The first capacitance C11 is 1.0pF. The second capacitance C12 is 1.0pF. The third capacitance C13 is 1.5pF. The fourth capacitance C3 is 22pF. The fifth capacitance C4 is 2.2nF. The communication module 4 converts the signal transmitted from the processing module 3 into a frequency suitable for the antenna to transmit through the capacitor and the inductor.

Fig. 7 is a circuit diagram of a memory chip. As shown in fig. 2, 3 and 7, the first pin CS, the second pin SO, the fifth pin SI and the sixth pin SCK of the memory chip U2 are used as data transmission terminals of the memory module 2, and are sequentially connected to the sixth pin P0.0, the thirty-sixth pin P1.2, the fifth pin P1.1 and the fourth pin P1.0 of the processing chip U1, respectively.

Example 3 shows one of the specific circuit connection structures of example 2 or example 1. In embodiment 3, selecting the processing chip U1 with the model nRF24E1 can effectively simplify the system power supply design, reduce the cost, and reduce the system power consumption. By the specific circuit structure of the embodiment 3, detection, remote monitoring and positioning of the degradation condition of the SPD can be realized. It will be appreciated that the circuit modules shown in fig. 1 or 2 may also be implemented using other circuit chips having similar functions.

Example 4.

Fig. 8 is a block diagram of an SPD system with a detection device mounted. As shown in fig. 8, embodiment 4 shows an SPD system with the detection apparatus of any one of embodiments 1 to 3 mounted. The SPD system includes an SPD, when the SPD is degraded, the switching value inside the SPD will change, and the remote signaling signal output by the remote signaling terminal of the SPD will change, and the remote signaling terminal of the SPD is connected to the detection data input end of the detection module 2 described in the above embodiment. The SPD system as shown in embodiment 4 may enable fast response, remote monitoring and rapid location of SPD degradation conditions.

The SPD system shown in embodiment 4 can monitor the operation condition (degradation) of the lightning protector and the front-end protector, and process fault information, and helps to discharge a large amount of pulse energy short-circuit generated by lightning strike induction on the circuit to the ground in a minimum time, and reduce the potential difference between interfaces of the device, so as to protect the device on the circuit.

The SPD with wireless positioning provided by the utility model is used for realizing multiple protection of induction lightning stroke, is novel lightning protection technology combined application equipment, and can be used in a lightning protection system of a low-voltage power distribution system.

The above description is illustrative of the utility model and not limiting, the scope of the utility model being defined by the appended claims, which may be modified in any manner without departing from the basic structure of the utility model.

Claims (10)

1. A detection apparatus for determining degradation of an SPD, comprising: the device comprises a detection module (2), a processing module (3) and a communication module (4); the detection module (2) comprises an optical coupling device (U3); the processing module (3) is a 2.4G wireless transceiver module; the input end of the optical coupling device (U3) is used for inputting SPD detection signals; the output end of the optical coupling device (U3) is used as a detection data output end and is connected with the processing data input end of the processing module (3); the processing data output end of the processing module (3) is connected with the transmission data input end of the communication module (4); the communication module (4) is used for adjusting the frequency of the processing data output by the processing module (3) and sending the processing data.

2. The detection device for determining the degradation of an SPD according to claim 1, wherein the detection module (2) further comprises an input terminal (J1); the anode input end of the optical coupling device (U3) is connected with the working voltage; the cathode input end of the optical coupling device (U3) is connected with an input terminal (J1); the first output end of the optical coupling device (U3) is connected with an operating voltage; the first output end of the optical coupling device (U3) is connected with the detection data input end of the processing module (3); the second output end of the optical coupling device (U3) is grounded; the input terminal (J1) is used for inputting an SDP detection signal.

3. The detection device for determining SPD degradation according to claim 1, wherein the communication module (4) comprises a first inductor (L1), a second inductor (L1), a first capacitor (C11), a second capacitor (C12), and a third capacitor (C13); two ends of the first inductor (L1) are transmission data input ends of the communication module (4); a first end of the first capacitor (C11) is connected with a first end of the first inductor (L1); the first end of the second capacitor (C12) is connected with the second end of the first inductor (L1); two ends of the third capacitor (C13) are respectively connected with the first end of the first capacitor (C11) and the second end of the second capacitor (C12); the second end of the second capacitor (C12) is grounded; the first end of the second inductor (L2) is connected with the first end of the first inductor (L1), and the second end of the second inductor (L2) is grounded.

4. A detection arrangement for determining degradation of an SPD according to claim 3, further comprising an Antenna (ANT) connected to the second end of the first capacitor (C11).

5. The apparatus according to claim 1, further comprising a memory module (5); the storage module (5) is used for storing the identification code of the SPD; the data transmission end of the storage module (5) is connected with the data transmission end of the processing module (3).

6. The apparatus according to claim 1, wherein the processing module (3) includes a processing chip (U1) of model nRF24E 1; a ninth pin of the processing chip (U1) is used as a detection data input end of the processing module (3) and is connected with a detection data output end of the detection module (2); and a nineteenth pin and a twentieth pin of the processing chip (U1) are used as processing data output ends and are connected with a transmission data input end of the communication module (4).

7. The apparatus according to claim 6, further comprising a memory module (5); the memory module (5) comprises a memory chip (U2) with the size of 25AA 320; the fourth pin, the fifth pin, the sixth pin and the thirty-sixth pin of the processing chip (U1) are used as data transmission ends of the processing module (3) and are sequentially connected with the sixth pin, the fifth pin, the first pin and the second pin of the storage module (5) respectively.

8. The apparatus according to claim 6, wherein the processing module (3) further comprises a clock module; the clock module comprises a crystal oscillator (X1), a first resistor (R1), a sixth capacitor (C1) and a seventh capacitor (C2); the two ends of the crystal oscillator (X1) are respectively connected with a sixteenth pin and a seventeenth pin of the processing chip (U1); the first resistor (R1) is connected in parallel with two ends of the crystal oscillator (X1); both ends of the first resistor (R1) are grounded through a sixth capacitor (C1) and a seventh capacitor (C2), respectively.

9. The detection device for judging degradation of an SPD according to claim 1, wherein the detection device further comprises a power supply module (1); the power supply module (1) provides working power for the processing module (3).

10. An SPD system with a detection device mounted thereto, wherein the SPD system comprises an SPD comprising remote signalling terminals connected to a detection data input of the detection module (2) according to any one of claims 1 to 9.