CN117353239A - Signal lightning pulse suppression protection circuit with failure detection - Google Patents
Signal lightning pulse suppression protection circuit with failure detection Download PDFInfo
- Publication number
- CN117353239A CN117353239A CN202311581261.2A CN202311581261A CN117353239A CN 117353239 A CN117353239 A CN 117353239A CN 202311581261 A CN202311581261 A CN 202311581261A CN 117353239 A CN117353239 A CN 117353239A
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- Prior art keywords
- circuit
- port
- indicator lamp
- rectification
- loop
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 230000001629 suppression Effects 0.000 title claims abstract description 15
- 230000001960 triggered effect Effects 0.000 claims abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000001012 protector Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/046—Signalling the blowing of a fuse
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Abstract
The invention relates to a lightning pulse suppression protection circuit with failure detection signals, which comprises discharge tubes G1 and G2 connected between two signal lines and a rectification loop D1, wherein the discharge tube G1 is also connected with a PE grounding wire; the 2 nd and 4 th ports of the rectifying circuit D1 are respectively connected with a diode connected with a PE grounding wire, the rectifying circuit D1 is also connected with an overheat failure ATCO type tripping circuit, the overheat failure ATCO type tripping circuit is connected with an indicator lamp circuit and a wiring terminal, and when the overheat failure ATCO type tripping circuit fails, an indicator lamp in the indicator lamp circuit is extinguished, and a switching value signal is triggered to interrupt and simultaneously transmitted to an upper computer for alarming. According to the invention, failure detection is realized through the temperature fuse and the transient diode which are connected in series, and when one device is damaged and fails, a signal terminal can be detected quickly and accurately, and the overall sensitivity is high and the stability is good.
Description
Technical Field
The invention relates to the field of electric protection, in particular to a signal lightning pulse suppression protection circuit with failure detection.
Background
At present, most of signal lightning protection devices, surge protection devices and the like which are applicable to information systems are only provided with lightning protection functions, a detection and alarm system aiming at the working state of the signal lightning protection devices, surge protection devices and surge protection devices is not provided, the state of the signal lightning protection devices, surge protection devices and the surge protection devices is not monitored or indicated after the signal lightning protection devices, surge protection devices and surge protection devices are damaged or fail, maintenance personnel can only routinely detach the signal lightning protection devices, surge protection devices and the surge protection devices to send out inspection and test, and the signal lightning protection devices, surge protection devices and the like are time-consuming and labor-consuming and inconvenient; the existing signal lightning protector, surge protector and the like are all protected by a gas discharge tube as a first stage, a transient suppression diode as a second stage, and a resistor as coordination between two stages, so that components forming the protector are possibly damaged in the use process of the product.
At present, a signal lightning protector, a surge protector and the like only monitor the temperature of a coordinated resistor (the temperature rise of the resistor is caused by the increase of current), and a transient diode TVS is combined with a mechanical push rod to shield infrared correlation and is combined with a solution of mechanical push rod hole blocking, so that the sensitivity of detection is not high, the accuracy and the reliability are poor, and particularly when abnormal working current occurs on a circuit, the resistance monitoring is unreasonable. The solution of shielding infrared correlation by combining a transient diode TVS with a mechanical push rod is generally adopted in some imported brands, but the disadvantage is that the transient diode TVS may be internally fused when broken down, a bonding pad does not fall off so that the push rod and a spring dragging the push rod cannot act, not to mention that the infrared correlation of the later stage is shielded, and when a plurality of signal products are arranged in a row, each state cannot be detected, but the signal products are mistakenly considered to be problematic, and the personnel are required to check one by one, so that a large amount of manpower and material resources are consumed, and the cost is greatly increased.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a signal lightning pulse suppression protection circuit with failure detection, and solves the defects in the prior art.
The aim of the invention is achieved by the following technical scheme: the signal lightning pulse suppression protection circuit with failure detection comprises discharge tubes G1 and G2 connected between two signal lines and a rectification loop D1, wherein the discharge tube G1 is also connected with a PE grounding wire; the 2 nd and 4 th ports of the rectifying circuit D1 are respectively connected with a diode connected with a PE grounding wire, the rectifying circuit D1 is also connected with an overheat failure ATCO type tripping circuit, the overheat failure ATCO type tripping circuit is connected with an indicator lamp circuit and a wiring terminal, and when the overheat failure ATCO type tripping circuit fails, an indicator lamp in the indicator lamp circuit is extinguished, and a switching value signal is triggered to interrupt and simultaneously transmitted to an upper computer for alarming.
The overheat failure ATCO type tripping circuit comprises a temperature fuse F1 and a TVS1 which are connected in series, the other end of the temperature fuse F1 is connected with a 4 th port of the rectifying circuit D1, the other end of the TVS1 is connected with an indicator lamp circuit and a 2 nd port of the rectifying circuit D1, and when the temperature fuse F1 or the TVS1 fails, an indicator lamp in the indicator lamp circuit is extinguished.
The rectification circuit D1 comprises a bridge rectification circuit formed by 4 diodes, the 1 st port and the 3 rd port of the rectification circuit D1 are respectively connected with two signal lines, the 4 th port is connected with the positive electrode of the diode D3, the negative electrode of the diode D3 is connected with the PE grounding wire, the 2 nd port is connected with the negative electrode of the diode D2, and the positive electrode of the diode D2 is connected with the PE grounding wire.
The temperature fuse is characterized by further comprising a rectification loop D0, wherein the rectification loop D0 comprises a bridge rectification loop formed by 4 diodes, the 1 st port of the rectification loop D0 is connected with the temperature fuse F1, the 3 rd port is connected with the 4 th port, and the indicator light loop is connected between the 2 nd port and the 3 rd port of the rectification loop D0.
The detection loop comprises an indicator lamp H1 and a resistor R3, wherein the indicator lamp H1 is connected between a 2 nd port and a 3 rd port of the rectification loop D0, one end of the resistor R3 is connected with the 3 rd port of the rectification loop D0, and the other end of the resistor R3 is connected with the TVS1 and the 2 nd port of the rectification loop D1.
The 1 st port of the rectification loop D0 and the resistor R3 are also connected with a wiring terminal, and when the wiring terminal is connected with an upper computer through RS 485.
The invention has the following advantages: a signal lightning pulse suppression protection circuit with failure detection is used for realizing failure detection through a temperature fuse and a transient diode which are connected in series, and when one device is damaged and fails, a signal terminal can be detected quickly and accurately, and the overall sensitivity is high and the stability is good.
Drawings
Fig. 1 is a circuit schematic of the present invention.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of the embodiments of the present application, provided in connection with the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application. The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the invention specifically relates to a lightning pulse suppression protection circuit with failure detection, which comprises discharge tubes G1 and G2 connected between two signal lines, and a rectification loop D1, wherein the discharge tube G1 is also connected with a PE grounding wire; the 2 nd and 4 th ports of the rectifying circuit D1 are respectively connected with a diode connected with a PE grounding wire, the rectifying circuit D1 is also connected with an overheat failure ATCO type tripping circuit, the overheat failure ATCO type tripping circuit is connected with an indicator lamp circuit and a wiring terminal, and when the overheat failure ATCO type tripping circuit fails, an indicator lamp in the indicator lamp circuit is extinguished, and a switching value signal is triggered to interrupt and simultaneously transmitted to an upper computer for alarming.
Further, the overheat failure ATCO type tripping circuit comprises a temperature fuse F1 and a TVS1 which are connected in series, the other end of the temperature fuse F1 is connected with a 4 th port of the rectifying circuit D1, the other end of the TVS1 is connected with an indicator lamp circuit and a 2 nd port of the rectifying circuit D1, when the temperature fuse F1 or the TVS1 fails, 11 pins and 12 pins on a wiring terminal are disconnected, an indicator lamp in the indicator lamp circuit is extinguished, the protection fails, and the inspection replacement is reminded.
Further, the rectifying circuit D1 includes a bridge rectifying circuit formed by 4 diodes, the 1 st port and the 3 rd port of the rectifying circuit D1 are respectively connected with two signal lines, the 4 th port is connected with the positive pole of the diode D3, the negative pole of the diode D3 is connected with the PE ground wire, the 2 nd port is connected with the negative pole of the diode D2, and the positive pole of the diode D2 is connected with the PE ground wire.
The temperature fuse is characterized by further comprising a rectification loop D0, wherein the rectification loop D0 comprises a bridge rectification loop formed by 4 diodes, the 1 st port of the rectification loop D0 is connected with the temperature fuse F1, the 3 rd port is connected with the 4 th port, and the indicator light loop is connected between the 2 nd port and the 3 rd port of the rectification loop D0.
Further, the detection loop comprises an indicator lamp H1 and a resistor R3, wherein the indicator lamp H1 is connected between a 2 nd port and a 3 rd port of the rectification loop D0, one end of the resistor R3 is connected with the 3 rd port of the rectification loop D0, and the other end is connected with the TVS1 and the 2 nd port of the rectification loop D1.
Further, the 1 st port of the rectification loop D0 and the resistor R3 are also connected with a wiring terminal, and when the wiring terminal is connected with an upper computer through RS 485.
The working principle of the invention is as follows: after one of the TVS1 (transient diode) and the temperature fuse F1 is broken down, failure information can be detected immediately after the protection circuit fails, the temperature fuse F1 is connected with an indicator lamp loop in parallel and a switching value signal on a wiring terminal, the switching value signal is connected with an upper computer through an RS485, and the online state of the signal and the extinction of an indicator lamp of the indicator lamp loop are monitored in real time to display an abnormal state.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and adaptations, and of being modified within the scope of the inventive concept described herein, by the foregoing teachings or by the skilled person or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (6)
1. A signal lightning pulse suppression protection circuit with failure detection is characterized in that: the power supply circuit comprises discharge tubes G1 and G2 connected between two signal lines and a rectification loop D1, wherein the discharge tube G1 is also connected with a PE grounding wire; the 2 nd and 4 th ports of the rectifying circuit D1 are respectively connected with a diode connected with a PE grounding wire, the rectifying circuit D1 is also connected with an overheat failure ATCO type tripping circuit, the overheat failure ATCO type tripping circuit is connected with an indicator lamp circuit and a wiring terminal, and when the overheat failure ATCO type tripping circuit fails, an indicator lamp in the indicator lamp circuit is extinguished, and a switching value signal is triggered to interrupt and simultaneously transmitted to an upper computer for alarming.
2. The lightning impulse suppression protection circuit with failure detection signal according to claim 1, wherein: the overheat failure ATCO type tripping circuit comprises a temperature fuse F1 and a TVS1 which are connected in series, the other end of the temperature fuse F1 is connected with a 4 th port of the rectifying circuit D1, the other end of the TVS1 is connected with an indicator lamp circuit and a 2 nd port of the rectifying circuit D1, and when the temperature fuse F1 or the TVS1 fails, an indicator lamp in the indicator lamp circuit is extinguished.
3. The lightning impulse suppression protection circuit with failure detection signal according to claim 1, wherein: the rectification circuit D1 comprises a bridge rectification circuit formed by 4 diodes, the 1 st port and the 3 rd port of the rectification circuit D1 are respectively connected with two signal lines, the 4 th port is connected with the positive electrode of the diode D3, the negative electrode of the diode D3 is connected with the PE grounding wire, the 2 nd port is connected with the negative electrode of the diode D2, and the positive electrode of the diode D2 is connected with the PE grounding wire.
4. The lightning impulse suppression protection circuit with failure detection signal according to claim 2, wherein: the temperature fuse is characterized by further comprising a rectification loop D0, wherein the rectification loop D0 comprises a bridge rectification loop formed by 4 diodes, the 1 st port of the rectification loop D0 is connected with the temperature fuse F1, the 3 rd port is connected with the 4 th port, and the indicator light loop is connected between the 2 nd port and the 3 rd port of the rectification loop D0.
5. The lightning impulse suppression protection circuit with failure detection according to claim 4, wherein: the detection loop comprises an indicator lamp H1 and a resistor R3, wherein the indicator lamp H1 is connected between a 2 nd port and a 3 rd port of the rectification loop D0, one end of the resistor R3 is connected with the 3 rd port of the rectification loop D0, and the other end of the resistor R3 is connected with the TVS1 and the 2 nd port of the rectification loop D1.
6. The lightning impulse suppression protection circuit with failure detection according to claim 5, wherein: the 1 st port of the rectification loop D0 and the resistor R3 are also connected with a wiring terminal, and when the wiring terminal is connected with an upper computer through RS 485.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311581261.2A CN117353239A (en) | 2023-11-24 | 2023-11-24 | Signal lightning pulse suppression protection circuit with failure detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311581261.2A CN117353239A (en) | 2023-11-24 | 2023-11-24 | Signal lightning pulse suppression protection circuit with failure detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117353239A true CN117353239A (en) | 2024-01-05 |
Family
ID=89369619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311581261.2A Pending CN117353239A (en) | 2023-11-24 | 2023-11-24 | Signal lightning pulse suppression protection circuit with failure detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117353239A (en) |
-
2023
- 2023-11-24 CN CN202311581261.2A patent/CN117353239A/en active Pending
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