CN212183190U - Surge protector monitoring system for lane controller - Google Patents
Surge protector monitoring system for lane controller Download PDFInfo
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- CN212183190U CN212183190U CN202020991863.0U CN202020991863U CN212183190U CN 212183190 U CN212183190 U CN 212183190U CN 202020991863 U CN202020991863 U CN 202020991863U CN 212183190 U CN212183190 U CN 212183190U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
The utility model provides a surge protector monitored control system for lane controller, through set up bleeder circuit, first filter circuit, second filter circuit, first voltage follower and second voltage follower in signal conditioning circuit, can carry out current-voltage conversion and filtering to the voltage on one end of the transient voltage suppression component of survey through first filter circuit; the voltage follower can be used for carrying out voltage following on the output voltage of the first filter circuit, so that the loading capacity is improved, and the impedance matching is realized; the voltage on the other side of the transient voltage suppression element to be detected is attenuated and divided by the voltage division circuit, so that the voltage is reduced to a low voltage suitable for being collected by the single chip microcomputer, and the reduced voltage signal is filtered by the second filter circuit; and voltage following is carried out on the output voltage of the second filter circuit through the second voltage follower, so that the loading capacity is improved, and the impedance matching is realized.
Description
Technical Field
The utility model relates to a lane controller field especially relates to a surge protector monitored control system for lane controller.
Background
The surge protector is also called SPD, its main component is high-energy zinc oxide valve plate, its main function is voltage limiting, when our power line is affected by thunder and lightning, it can be quickly started, and the over-current on the nearby line can be discharged to earth by means of self-body and grounding device connected with it so as to protect equipment on the line. At present, a lightning protection system of a lane controller comprises a surge protector monitoring system. The existing surge protector monitoring system mainly comprises a data acquisition and processing module, a data remote transmission module and a monitoring terminal display platform, and the working principle is as follows: the current signals at two ends of a transient voltage suppression element to be detected in the surge protector are detected through the sensor, and then the current signals are amplified, filtered and processed through the single chip microcomputer and then transmitted to the monitoring terminal display platform through the data remote transmission module. The current sampling point is arranged at the rear end of the transient voltage suppression element to be measured, and the high voltage must be reduced to the low voltage suitable for being collected by the single chip microcomputer through the signal conditioning circuit because the single chip microcomputer cannot directly sample the high voltage. But current signal conditioning circuit can't realize the high impedance input and the low impedance output of electric current, consequently, for solving above-mentioned problem, the utility model provides a surge protector monitored control system for lane controller through optimizing signal conditioning circuit's structure, realizes the high impedance input and the low impedance output phase-match of electric current.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a surge protector monitored control system for lane controller through optimizing signal conditioning circuit's structure, realizes that the high impedance input and the low impedance output phase-match of electric current.
The technical scheme of the utility model is realized like this: the utility model provides a surge protector monitored control system for lane controller, it includes transient voltage suppression component, singlechip, signal conditioning circuit, AD converter and communication module to be surveyed, and signal conditioning circuit includes bleeder circuit, first filter circuit, second filter circuit, first voltage follower and second voltage follower;
one end of the transient voltage suppression element to be detected is electrically connected with the input end of the first voltage follower through the first filter circuit, the output end of the first voltage follower is electrically connected with the analog input end of the A/D converter, the digital output end of the A/D converter is electrically connected with the single chip microcomputer, and the communication end of the single chip microcomputer is electrically connected with the communication module;
the other end of the transient voltage suppression element to be detected is electrically connected with the input end of the first filter through the voltage division circuit, and the output end of the first filter is electrically connected with the analog input end of the A/D converter through the second voltage follower.
In addition to the above technical solution, preferably, the first filter circuit includes: the resistor R82, the capacitor C53 and the bidirectional TVS tube D12 are connected in parallel;
one end of the transient voltage suppression element to be tested is electrically connected with one end of the capacitor C53 and the input end of the first voltage follower respectively, and the other end of the capacitor C53 is grounded.
Further preferably, the first voltage follower comprises an AD8552M/TR amplifier;
On the basis of the above technical solution, preferably, the voltage dividing circuit includes resistors R83-R85 and a sliding resistor RP 4;
the other end of the transient voltage suppression element to be detected is electrically connected with one end of a sliding resistor RP4 through a resistor R84, the other end of the sliding resistor RP4 is grounded through a resistor R85, a sliding sheet of the sliding resistor RP4 is respectively electrically connected with one end of a resistor R83 and the input end of the second filter circuit, and the other end of the resistor R83 is grounded.
Further preferably, the second filter circuit includes: a capacitor C54 and a bidirectional TVS tube D13 which are connected in parallel with each other;
one end of the capacitor C54 is electrically connected to the slider of the sliding resistor RP4 and one end of the resistor R83, respectively, and the other end of the capacitor C54 is grounded.
Further preferably, the second voltage follower comprises an AD8552M/TR amplifier;
The utility model discloses a surge protector monitored control system for lane controller has following beneficial effect for prior art:
(1) by arranging the voltage division circuit, the first filter circuit, the second filter circuit, the first voltage follower and the second voltage follower in the signal conditioning circuit, the voltage at one end of the transient voltage suppression element to be detected can be subjected to current-voltage conversion and filtering processing through the first filter circuit; the voltage follower can be used for carrying out voltage following on the output voltage of the first filter circuit, so that the loading capacity is improved, and the impedance matching is realized; the voltage on the other side of the transient voltage suppression element to be detected is attenuated and divided by the voltage division circuit, so that the voltage is reduced to a low voltage suitable for being collected by the single chip microcomputer, and the reduced voltage signal is filtered by the second filter circuit; and voltage following is carried out on the output voltage of the second filter circuit through the second voltage follower, so that the loading capacity is improved, and the impedance matching is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural diagram of a surge protector monitoring system for a lane controller according to the present invention;
fig. 2 is a circuit diagram of a signal conditioning circuit in a surge protector monitoring system for a lane controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses a surge protector monitored control system for lane controller, it includes by survey transient voltage suppression component, singlechip, signal conditioning circuit, AD converter and communication module. The signal conditioning circuit collects the current at two ends of the transient voltage suppression element to be measured, converts the current signal into a voltage signal, amplifies and filters the voltage signal and transmits the voltage signal to the A/D converter, the A/D converter converts the voltage signal into a digital signal and transmits the digital signal to the single chip microcomputer, and the single chip microcomputer transmits the digital signal to the monitoring terminal display platform through the communication module to be displayed.
Further preferably, in a voltage-driven circuit, the larger the input impedance, the lighter the load on the voltage source, and thus the easier it is to drive, and the less the influence on the signal source, that is, the smaller the influence on the previous stage circuit by the device having the larger input impedance; the output impedance refers to the impedance presented when the device drives a circuit at the later stage, and the larger the output impedance is, the more the load capacity of the device is weakened. However, the conventional signal conditioning circuit cannot achieve high impedance input and low impedance output, because, in order to solve the above problems, in this embodiment, the signal conditioning circuit includes a voltage dividing circuit, a first filter circuit, a second filter circuit, a first voltage follower, and a second voltage follower; one end of the transient voltage suppression element to be detected is electrically connected with the input end of the first voltage follower through the first filter circuit, the output end of the first voltage follower is electrically connected with the analog input end of the A/D converter, the digital output end of the A/D converter is electrically connected with the single chip microcomputer, and the communication end of the single chip microcomputer is electrically connected with the communication module; the other end of the transient voltage suppression element to be detected is electrically connected with the input end of the first filter through the voltage division circuit, and the output end of the first filter is electrically connected with the analog input end of the A/D converter through the second voltage follower.
Further preferably, the first filter circuit is configured to filter an interference signal in the current signal collected by one end of the measured transient voltage suppression element. In this embodiment, as shown in fig. 2, the first filter circuit includes: the resistor R82, the capacitor C53 and the bidirectional TVS tube D12 are connected in parallel; specifically, one end of the transient voltage suppression element to be tested is electrically connected to one end of the capacitor C53 and the input end of the first voltage follower, respectively, and the other end of the capacitor C53 is grounded.
Wherein, the resistor R82 is used for converting current into voltage; the capacitor C53 is a filter capacitor; the bidirectional TVS tube D12 mainly has a voltage limiting protection effect and prevents the single chip microcomputer from being damaged by voltage overrun.
Further preferably, the high impedance input and the low impedance output of the current sampling signal can be realized by the first voltage follower. In the present embodiment, as shown in fig. 2, the first voltage follower includes an AD8552M/TR amplifier; pin 3 of the AD8552M/TR amplifier is electrically connected to one end of the transient voltage suppression device under test and one end of the capacitor C53, respectively, and pin 1 of the AD8552M/TR amplifier is electrically connected to the analog input terminal of the a/D converter.
Further preferably, because the voltage at the two ends of the transient voltage suppression element to be detected can reach 500V, and because the single chip microcomputer cannot directly sample the high voltage, the high voltage must be reduced to a low voltage suitable for being collected by the single chip microcomputer through the signal conditioning circuit, and therefore, in this embodiment, the voltage at the two ends of the transient voltage suppression element to be detected is reduced to a voltage range capable of being collected by the single chip microcomputer through the voltage division circuit. In this embodiment, as shown in fig. 2, the voltage divider circuit includes resistors R83-R85 and a sliding resistor RP 4; specifically, the other end of the transient voltage suppression element to be tested is electrically connected with one end of a sliding resistor RP4 through a resistor R84, the other end of the sliding resistor RP4 is grounded through a resistor R85, a sliding sheet of the sliding resistor RP4 is electrically connected with one end of a resistor R83 and the input end of the second filter circuit, and the other end of the resistor R83 is grounded.
The resistor resistors R83-R85 and the sliding resistor RP4 are connected in series and in parallel, most of voltage is dropped on the resistors, and the function of voltage division attenuation is achieved; the voltage division ratio of the voltage division circuit is adjusted by adjusting the resistance value of the sliding resistor RP 4; the resistors R83-R85 and the sliding resistor RP4 are all precision resistors.
Further preferably, the second filter circuit filters interference information in the signal at the output end of the voltage division circuit. In this embodiment, as shown in fig. 2, the second filter circuit includes: a capacitor C54 and a bidirectional TVS tube D13 which are connected in parallel with each other; specifically, one end of the capacitor C54 is electrically connected to the slider of the sliding resistor RP4 and one end of the resistor R83, respectively, and the other end of the capacitor C54 is grounded.
The capacitor C54 is a filter capacitor; the bidirectional TVS tube D13 plays a role in amplitude limiting protection.
Further preferably, the high impedance input and the low impedance output of the current sampling signal can be realized by the second voltage follower. In the present embodiment, as shown in fig. 2, the second voltage follower includes an AD8552M/TR amplifier; specifically, a pin 5 of the AD8552M/TR amplifier is electrically connected to one end of the capacitor C53, a pin 6 of the AD8552M/TR amplifier is electrically connected to a pin 7 thereof, and the pin 7 of the AD8552M/TR amplifier is electrically connected to the analog input terminal of the a/D converter.
Further preferably, the types of the a/D converter and the single chip microcomputer of this embodiment are not limited, and different types may be selected according to actual requirements.
Further preferably, the embodiment communicates with the monitoring terminal display platform through the communication module. The communication module may be a wireless communication module or a wired communication module.
The working principle of the embodiment is as follows: the voltage at one end of the transient voltage suppression element to be detected is subjected to current-voltage conversion and filtering processing through the first filter circuit and then is input to the first voltage follower, and the load carrying capacity can be improved and the impedance matching effect can be realized through the first voltage follower;
the voltage on the other end of the transient voltage suppression element to be measured is attenuated and divided by the voltage dividing circuit, so that the voltage is in a voltage range which can be received by a pin of the single chip microcomputer, voltage signals after voltage reduction are subjected to filtering processing by the second filter circuit and then input to the second voltage follower, and the load carrying capacity can be improved and the impedance matching effect can be realized through the second voltage follower.
The beneficial effect of this embodiment does: by arranging the voltage division circuit, the first filter circuit, the second filter circuit, the first voltage follower and the second voltage follower in the signal conditioning circuit, the voltage at one end of the transient voltage suppression element to be detected can be subjected to current-voltage conversion and filtering processing through the first filter circuit; the voltage follower can be used for carrying out voltage following on the output voltage of the first filter circuit, so that the loading capacity is improved, and the impedance matching is realized; the voltage on the other side of the transient voltage suppression element to be detected is attenuated and divided by the voltage division circuit, so that the voltage is reduced to a low voltage suitable for being collected by the single chip microcomputer, and the reduced voltage signal is filtered by the second filter circuit; and voltage following is carried out on the output voltage of the second filter circuit through the second voltage follower, so that the loading capacity is improved, and the impedance matching is realized.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a surge protector monitored control system for lane controller, its includes by survey transient voltage suppression component, singlechip, signal conditioning circuit, AD converter and communication module, its characterized in that: the signal conditioning circuit comprises a voltage division circuit, a first filter circuit, a second filter circuit, a first voltage follower and a second voltage follower;
one end of the transient voltage suppression element to be detected is electrically connected with the input end of the first voltage follower through the first filter circuit, the output end of the first voltage follower is electrically connected with the analog input end of the A/D converter, the digital output end of the A/D converter is electrically connected with the single chip microcomputer, and the communication end of the single chip microcomputer is electrically connected with the communication module;
the other end of the transient voltage suppression element to be detected is electrically connected with the input end of the first filter through the voltage division circuit, and the output end of the first filter is electrically connected with the analog input end of the A/D converter through the second voltage follower.
2. A surge protector monitoring system for a roadway controller as recited in claim 1, wherein: the first filter circuit includes: the resistor R82, the capacitor C53 and the bidirectional TVS tube D12 are connected in parallel;
one end of the transient voltage suppression element to be tested is electrically connected with one end of the capacitor C53 and the input end of the first voltage follower respectively, and the other end of the capacitor C53 is grounded.
3. A surge protector monitoring system for a roadway controller as recited in claim 2, wherein: the first voltage follower comprises an AD8552M/TR amplifier;
pin 3 of the AD8552M/TR amplifier is electrically connected to one end of the transient voltage suppression device under test and one end of a capacitor C53, respectively, and pin 1 of the AD8552M/TR amplifier is electrically connected to the analog input terminal of the a/D converter.
4. A surge protector monitoring system for a roadway controller as recited in claim 1, wherein: the voltage division circuit comprises resistors R83-R85 and a sliding resistor RP 4;
the other end of the transient voltage suppression element to be detected is electrically connected with one end of a sliding resistor RP4 through a resistor R84, the other end of the sliding resistor RP4 is grounded through a resistor R85, a sliding sheet of the sliding resistor RP4 is electrically connected with one end of a resistor R83 and the input end of the second filter circuit respectively, and the other end of the resistor R83 is grounded.
5. A surge protector monitoring system for a roadway controller as recited in claim 4, wherein: the second filter circuit includes: a capacitor C54 and a bidirectional TVS tube D13 which are connected in parallel with each other;
one end of the capacitor C54 is electrically connected with the slide sheet of the slide resistor RP4 and one end of the resistor R83 respectively, and the other end of the capacitor C54 is grounded.
6. A surge protector monitoring system for a roadway controller as recited in claim 5, wherein: the second voltage follower comprises an AD8552M/TR amplifier;
a pin 5 of the AD8552M/TR amplifier is electrically connected with one end of a capacitor C53, a pin 6 of the AD8552M/TR amplifier is electrically connected with a pin 7 of the AD 8552/TR amplifier, and the pin 7 of the AD8552M/TR amplifier is connected with an analog input end of the A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020991863.0U CN212183190U (en) | 2020-06-03 | 2020-06-03 | Surge protector monitoring system for lane controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020991863.0U CN212183190U (en) | 2020-06-03 | 2020-06-03 | Surge protector monitoring system for lane controller |
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| Publication Number | Publication Date |
|---|---|
| CN212183190U true CN212183190U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020991863.0U Active CN212183190U (en) | 2020-06-03 | 2020-06-03 | Surge protector monitoring system for lane controller |
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| CN (1) | CN212183190U (en) |
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- 2020-06-03 CN CN202020991863.0U patent/CN212183190U/en active Active
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