CN113125847A - Method and device for processing direct current signal - Google Patents
Method and device for processing direct current signal Download PDFInfo
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- CN113125847A CN113125847A CN202110430299.4A CN202110430299A CN113125847A CN 113125847 A CN113125847 A CN 113125847A CN 202110430299 A CN202110430299 A CN 202110430299A CN 113125847 A CN113125847 A CN 113125847A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
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Abstract
The invention discloses a method and a device for processing direct current signals, wherein the method comprises the following steps: the current divider collects a direct current signal in a target direct current low-voltage circuit; the conversion circuit converts the direct current signal into a corresponding digital signal; the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal; and the micro-processing unit identifies the real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information. By means of the digital isolation circuit, under the condition that the manufacturing cost of the direct-current low-voltage circuit breaker protection system is low, electrical isolation between input signals and output signals is achieved.
Description
Technical Field
The invention relates to the technical field of low-voltage electrical appliances, in particular to a method and a device for processing a direct current signal.
Background
The sampling mode of the direct current low-voltage circuit breaker to the direct current signal at present mainly has three modes of direct current transformer sampling, shunt sampling and Hall sensor sampling, and because the direct current transformer and the Hall sensor are easily interfered by a magnetic field, in practical application, most manufacturers can select the shunt as a mainstream sampling tool.
Although the current shunt has the advantages of simple structure, large measurement range and difficult influence by an external magnetic field, the current shunt has the defect of non-isolation of an electric appliance directly connected with a main loop, and in order to solve the problem of non-isolation of the electric appliance connected with the main loop, the isolation amplifier is adopted to electrically isolate an input sampling signal in the prior art.
Disclosure of Invention
The invention provides a method and a device for processing a direct current signal, which realize the electrical isolation between an input signal and an output signal by a method of a digital isolation circuit.
In a first aspect, the present invention provides a method for processing a dc current signal, which is applied to a dc low-voltage circuit breaker protection system, where the system includes: the circuit comprises a current divider, a conversion circuit connected with the current divider in series, a digital isolation circuit connected with the A/D conversion circuit in series, and a micro-processing unit connected with the digital isolation circuit in series; the method comprises the following steps:
the current divider collects a direct current signal in a target direct current low-voltage circuit;
the conversion circuit converts the direct current signal into a corresponding digital signal;
the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal;
and the micro-processing unit identifies the real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information.
Optionally, the conversion circuit comprises: the signal filtering and amplifying circuit and the A/D conversion circuit are connected with the signal filtering and amplifying circuit; the conversion circuit converts the direct current signal into a corresponding digital signal, including:
the signal filtering and amplifying circuit performs low-pass filtering and amplification on the direct current signal to obtain an amplified direct current signal;
and the A/D conversion circuit converts the amplified direct current signal into a corresponding digital signal.
Optionally, the micro-processing unit comprises: the device comprises a microprocessor, a detection module connected with the microprocessor, and an alarm module connected with the microprocessor; the micro-processing unit identifies real-time state information of the direct current signal from the isolated digital signal, and determines the safety of the target direct current low-voltage circuit according to the real-time state information, and the method comprises the following steps:
the microprocessor recognizing the real-time status information from the isolated digital signal;
the detection module detects the real-time state information, and when the index item exceeding a preset interval exists in the real-time state information, the alarm module sends an alarm signal.
Optionally, the detection module comprises a current detection module; the alarm module comprises a current alarm module; the real-time status information comprises real-time current data; when the index item exceeding the preset interval exists in the real-time state information, the alarm module sends out an alarm signal, and the alarm signal comprises the following steps:
the current detection module detects the real-time current data; when the real-time current data exceeds a preset current interval, the microprocessor sends an alarm instruction to the current alarm module;
and the current alarm module responds to the alarm instruction and sends out the alarm signal.
Optionally, the detection module comprises a temperature detection module; the alarm module comprises a temperature alarm module; the real-time status information includes real-time temperature data; when the index item exceeding the preset interval exists in the real-time state information, the alarm module sends out an alarm signal, and the alarm signal comprises the following steps:
the temperature detection module detects the real-time temperature data; when the real-time temperature data exceeds a preset temperature interval, the microprocessor sends an alarm instruction to the temperature alarm module;
and the current alarm module responds to the alarm instruction and sends out the alarm signal.
In a second aspect, the present invention further discloses a processing apparatus for a dc current signal, which is applied to a protection system of a dc low-voltage circuit breaker, and the system includes: the circuit comprises a current divider, a conversion circuit connected with the current divider in series, a digital isolation circuit connected with the A/D conversion circuit in series, and a micro-processing unit connected with the digital isolation circuit in series; the device comprises:
the acquisition module is used for acquiring a direct current signal in the target direct current low-voltage circuit through the shunt;
the conversion module is used for converting the direct current signal into a corresponding digital signal through the conversion circuit;
the isolation module is used for isolating the input signal and the output signal in the digital signal through the digital isolation circuit to obtain an isolated digital signal;
and the identification module is used for identifying the real-time state information of the direct current signal from the isolated digital signal through the micro-processing unit and determining the safety of the target direct current low-voltage circuit according to the real-time state information.
Optionally, the conversion circuit comprises: the signal filtering and amplifying circuit and the A/D conversion circuit are connected with the signal filtering and amplifying circuit; the conversion module includes:
the filtering submodule is used for carrying out low-pass filtering and amplification on the direct current signal through the signal filtering and amplifying circuit to obtain an amplified direct current signal;
and the conversion submodule is used for converting the amplified direct current signal into a corresponding digital signal through the A/D conversion circuit.
Optionally, the micro-processing unit comprises: the device comprises a microprocessor, a detection module connected with the microprocessor, and an alarm module connected with the microprocessor; the isolation module includes:
the identification submodule is used for identifying the real-time state information from the isolated digital signal through the microprocessor;
and the detection submodule is used for detecting the real-time state information through the detection module, and the alarm module sends out an alarm signal when an index item exceeding a preset interval exists in the real-time state information.
Optionally, the detection module comprises a current detection module; the alarm module comprises a current alarm module; the real-time status information comprises real-time current data; the detection submodule includes:
the first detection unit is used for detecting the real-time current data through the current detection module; when the real-time current data exceeds a preset current interval, the microprocessor sends an alarm instruction to the current alarm module;
and the first response unit is used for responding to the alarm instruction through the current alarm module and sending out the alarm signal.
Optionally, the detection module comprises a temperature detection module; the alarm module comprises a temperature alarm module; the detection submodule includes:
the second detection unit is used for detecting the real-time temperature data through the temperature detection module; when the real-time temperature data exceeds a preset temperature interval, the microprocessor sends an alarm instruction to the temperature alarm module;
and the second response unit is used for responding to the alarm instruction through the current alarm module and sending out the alarm signal.
In a third aspect, the present application provides an electronic device comprising a processor and a memory, wherein the memory stores computer readable instructions, and the computer readable instructions, when executed by the processor, perform the steps of the method as provided in the first aspect.
In a fourth aspect, the present application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method as provided in the first aspect above.
According to the technical scheme, the invention has the following advantages:
the invention collects the direct current signal in the target direct current low voltage circuit through the shunt; the conversion circuit converts the direct current signal into a corresponding digital signal; the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal; and the micro-processing unit identifies the real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information. By means of the digital isolation circuit, under the condition that the manufacturing cost of the direct-current low-voltage circuit breaker protection system is low, electrical isolation between input signals and output signals is achieved.
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, and 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 inventive exercise.
FIG. 1 is a flowchart illustrating a first embodiment of a method for processing a DC signal according to the present invention;
FIG. 2 is a flowchart illustrating steps of a second embodiment of a method for processing a DC signal according to the present invention;
fig. 3 is a schematic diagram of the dc low-voltage circuit breaker protection system according to the present invention;
fig. 4 is a block diagram of a dc signal processing apparatus according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for processing a direct current signal, which realize the electrical isolation between an input signal and an output signal by a method of a digital isolation circuit.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first embodiment, referring to fig. 1, fig. 1 is a flowchart of a first step of a method for processing a dc current signal according to a first embodiment of the present invention, which is applied to a protection system of a dc low-voltage circuit breaker, and the system includes: the circuit comprises a current divider, a conversion circuit connected with the current divider in series, a digital isolation circuit connected with the A/D conversion circuit in series, and a micro-processing unit connected with the digital isolation circuit in series; the method specifically comprises the following steps:
step S101, the current divider collects direct current signals in a target direct current low-voltage circuit;
step S102, the conversion circuit converts the direct current signal into a corresponding digital signal;
step S103, the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal;
and step S104, the micro-processing unit identifies real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information.
In the embodiment of the invention, a direct current signal in a target direct current low-voltage circuit is collected through the shunt; the conversion circuit converts the direct current signal into a corresponding digital signal; the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal; and the micro-processing unit identifies the real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information. By means of the digital isolation circuit, under the condition that the manufacturing cost of the direct-current low-voltage circuit breaker protection system is low, electrical isolation between input signals and output signals is achieved.
In a second embodiment, please refer to fig. 2, which is a flowchart illustrating steps of a second embodiment of a method for processing a dc current signal according to the present invention, and fig. 3 is a schematic diagram illustrating a dc low-voltage circuit breaker protection system according to the present invention, including a power isolation circuit, a shunt 1 connected in series in the dc system, a signal filtering and amplifying circuit 2, an a/D conversion circuit 3, a digital isolation circuit 4, a microprocessor 5, a current detection module 6, a current alarm module 7, a temperature detection module 8, a temperature alarm module 9, and a communication module 10, wherein the power isolation circuit is respectively connected to the signal filtering and amplifying circuit 2, the a/D conversion circuit 3, and the digital isolation circuit 4, and is configured to provide power for the signal filtering and amplifying circuit, the a/D conversion circuit, and the digital isolation circuit, thereby ensuring the operation of the direct current low-voltage circuit breaker protection system. The method specifically comprises the following steps:
step S201, the current divider 1 collects direct current signals in a target direct current low-voltage circuit;
step S202, the signal filtering and amplifying circuit 2 performs low-pass filtering and amplification on the direct current signal to obtain an amplified direct current signal;
step S203, the a/D conversion circuit 3 converts the amplified dc current signal into a corresponding digital signal;
step S204, the digital isolation circuit 4 isolates the input signal and the output signal in the digital signal to obtain an isolated digital signal;
step S205, the microprocessor 5 identifies the real-time status information from the isolated digital signal;
step S206, the detection module detects the real-time state information, and when the index item exceeding a preset interval exists in the real-time state information, the alarm module sends out an alarm signal.
Specifically, the following two cases are included: (1) the current detection module 6 detects the real-time current data; when the real-time current data exceeds a preset current interval, the microprocessor 5 sends an alarm instruction to the current alarm module 7;
the current alarm module 7 responds to the alarm instruction and sends out the alarm signal;
(2) the temperature detection module 8 detects the real-time temperature data; when the real-time temperature data exceeds a preset temperature interval, the microprocessor 5 sends 9 an alarm instruction to the temperature alarm module;
the current alarm module 9 responds to the alarm instruction and sends out the alarm signal.
In specific implementation, the temperature detection module 8 may adopt a temperature sensor, the current alarm module 7 may adopt an audible and visual alarm, and the temperature alarm module 9 may adopt an audible and visual alarm, so as to realize detection of the target dc low-voltage circuit.
In the embodiment of the present invention, under the condition of isolation between the input signal and the output signal, after the safety of the target dc low-voltage circuit is confirmed, the safety of the target dc low-voltage circuit may be sent to the remote client through the communication module 10, and the remote client may perform remote control through the communication module 10 when the target dc low-voltage circuit is abnormal.
In the method for processing the direct current signal provided by the embodiment of the invention, the direct current signal in the target direct current low-voltage circuit is acquired through the shunt; the conversion circuit converts the direct current signal into a corresponding digital signal; the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal; and the micro-processing unit identifies the real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information. By means of the digital isolation circuit, under the condition that the manufacturing cost of the direct-current low-voltage circuit breaker protection system is low, electrical isolation between input signals and output signals is achieved.
Referring to fig. 4, a processing apparatus for a dc current signal is shown, which is applied to a protection system of a dc low-voltage circuit breaker, the system includes: the circuit comprises a current divider, a conversion circuit connected with the current divider in series, a digital isolation circuit connected with the A/D conversion circuit in series, and a micro-processing unit connected with the digital isolation circuit in series; the device comprises:
the acquisition module 101 is used for acquiring a direct current signal in a target direct current low-voltage circuit through the current divider;
the conversion module 102 is configured to convert the dc current signal into a corresponding digital signal through the conversion circuit;
the isolation module 103 is configured to isolate an input signal and an output signal in the digital signal through the digital isolation circuit to obtain an isolated digital signal;
the identification module 104 is configured to identify, by the microprocessor unit, real-time state information of the dc current signal from the isolated digital signal, and determine the safety of the target dc low-voltage circuit according to the real-time state information.
In an alternative embodiment, the conversion circuit comprises: the signal filtering and amplifying circuit and the A/D conversion circuit are connected with the signal filtering and amplifying circuit; the conversion module 102 includes:
the filtering submodule is used for carrying out low-pass filtering and amplification on the direct current signal through the signal filtering and amplifying circuit to obtain an amplified direct current signal;
and the conversion submodule is used for converting the amplified direct current signal into a corresponding digital signal through the A/D conversion circuit.
In an alternative embodiment, the micro-processing unit comprises: the device comprises a microprocessor, a detection module connected with the microprocessor, and an alarm module connected with the microprocessor; the isolation module 103 includes:
the identification submodule is used for identifying the real-time state information from the isolated digital signal through the microprocessor;
and the detection submodule is used for detecting the real-time state information through the detection module, and the alarm module sends out an alarm signal when an index item exceeding a preset interval exists in the real-time state information.
In an alternative embodiment, the detection module comprises a current detection module; the alarm module comprises a current alarm module; the real-time status information comprises real-time current data; the detection submodule includes:
the first detection unit is used for detecting the real-time current data through the current detection module; when the real-time current data exceeds a preset current interval, the microprocessor sends an alarm instruction to the current alarm module;
and the first response unit is used for responding to the alarm instruction through the current alarm module and sending out the alarm signal.
In an alternative embodiment, the detection module comprises a temperature detection module; the alarm module comprises a temperature alarm module; the detection submodule includes:
the second detection unit is used for detecting the real-time temperature data through the temperature detection module; when the real-time temperature data exceeds a preset temperature interval, the microprocessor sends an alarm instruction to the temperature alarm module;
and the second response unit is used for responding to the alarm instruction through the current alarm module and sending out the alarm signal.
An embodiment of the present invention further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method for processing a dc circuit signal according to any of the above embodiments.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by the processor, the method for processing the dc circuit signal according to any of the above embodiments is implemented.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A processing method of a direct current signal is applied to a direct current low-voltage circuit breaker protection system, and the system comprises the following steps: the circuit comprises a current divider, a conversion circuit connected with the current divider in series, a digital isolation circuit connected with the A/D conversion circuit in series, and a micro-processing unit connected with the digital isolation circuit in series; the method comprises the following steps:
the current divider collects a direct current signal in a target direct current low-voltage circuit;
the conversion circuit converts the direct current signal into a corresponding digital signal;
the digital isolation circuit isolates an input signal and an output signal in the digital signal to obtain an isolated digital signal;
and the micro-processing unit identifies the real-time state information of the direct current signal from the isolated digital signal and determines the safety of the target direct current low-voltage circuit according to the real-time state information.
2. The method according to claim 1, wherein the converting circuit comprises: the signal filtering and amplifying circuit and the A/D conversion circuit are connected with the signal filtering and amplifying circuit; the conversion circuit converts the direct current signal into a corresponding digital signal, including:
the signal filtering and amplifying circuit performs low-pass filtering and amplification on the direct current signal to obtain an amplified direct current signal;
and the A/D conversion circuit converts the amplified direct current signal into a corresponding digital signal.
3. The method for processing the direct current circuit signal according to claim 1 or 2, wherein the micro-processing unit comprises: the device comprises a microprocessor, a detection module connected with the microprocessor, and an alarm module connected with the microprocessor; the micro-processing unit identifies real-time state information of the direct current signal from the isolated digital signal, and determines the safety of the target direct current low-voltage circuit according to the real-time state information, and the method comprises the following steps:
the microprocessor recognizing the real-time status information from the isolated digital signal;
the detection module detects the real-time state information, and when the index item exceeding a preset interval exists in the real-time state information, the alarm module sends an alarm signal.
4. The method of claim 3, wherein the detection module comprises a current detection module; the alarm module comprises a current alarm module; the real-time status information comprises real-time current data; when the index item exceeding the preset interval exists in the real-time state information, the alarm module sends out an alarm signal, and the alarm signal comprises the following steps:
the current detection module detects the real-time current data; when the real-time current data exceeds a preset current interval, the microprocessor sends an alarm instruction to the current alarm module;
and the current alarm module responds to the alarm instruction and sends out the alarm signal.
5. The method according to claim 4, wherein the detection module comprises a temperature detection module; the alarm module comprises a temperature alarm module; the real-time status information includes real-time temperature data; when the index item exceeding the preset interval exists in the real-time state information, the alarm module sends out an alarm signal, and the alarm signal comprises the following steps:
the temperature detection module detects the real-time temperature data; when the real-time temperature data exceeds a preset temperature interval, the microprocessor sends an alarm instruction to the temperature alarm module;
and the current alarm module responds to the alarm instruction and sends out the alarm signal.
6. A processing device for DC current signals is characterized by being applied to a DC low-voltage circuit breaker protection system, and the system comprises: the circuit comprises a current divider, a conversion circuit connected with the current divider in series, a digital isolation circuit connected with the A/D conversion circuit in series, and a micro-processing unit connected with the digital isolation circuit in series; the device comprises:
the acquisition module is used for acquiring a direct current signal in the target direct current low-voltage circuit through the shunt;
the conversion module is used for converting the direct current signal into a corresponding digital signal through the conversion circuit;
the isolation module is used for isolating the input signal and the output signal in the digital signal through the digital isolation circuit to obtain an isolated digital signal;
and the identification module is used for identifying the real-time state information of the direct current signal from the isolated digital signal through the micro-processing unit and determining the safety of the target direct current low-voltage circuit according to the real-time state information.
7. The apparatus for processing a direct current signal according to claim 6, wherein the conversion circuit comprises: the signal filtering and amplifying circuit and the A/D conversion circuit are connected with the signal filtering and amplifying circuit; the conversion module includes:
the filtering submodule is used for carrying out low-pass filtering and amplification on the direct current signal through the signal filtering and amplifying circuit to obtain an amplified direct current signal;
and the conversion submodule is used for converting the amplified direct current signal into a corresponding digital signal through the A/D conversion circuit.
8. The apparatus for processing a DC circuit signal according to claim 6 or 7, wherein the micro-processing unit comprises: the device comprises a microprocessor, a detection module connected with the microprocessor, and an alarm module connected with the microprocessor; the isolation module includes:
the identification submodule is used for identifying the real-time state information from the isolated digital signal through the microprocessor;
and the detection submodule is used for detecting the real-time state information through the detection module, and the alarm module sends out an alarm signal when an index item exceeding a preset interval exists in the real-time state information.
9. The apparatus for processing the dc circuit signal of claim 8, wherein the detection module comprises a current detection module; the alarm module comprises a current alarm module; the real-time status information comprises real-time current data; the detection submodule includes:
the first detection unit is used for detecting the real-time current data through the current detection module; when the real-time current data exceeds a preset current interval, the microprocessor sends an alarm instruction to the current alarm module;
and the first response unit is used for responding to the alarm instruction through the current alarm module and sending out the alarm signal.
10. The apparatus for processing the dc circuit signal according to claim 9, wherein the detection module comprises a temperature detection module; the alarm module comprises a temperature alarm module; the detection submodule includes:
the second detection unit is used for detecting the real-time temperature data through the temperature detection module; when the real-time temperature data exceeds a preset temperature interval, the microprocessor sends an alarm instruction to the temperature alarm module;
and the second response unit is used for responding to the alarm instruction through the current alarm module and sending out the alarm signal.
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| CN202110430299.4A CN113125847A (en) | 2021-04-21 | 2021-04-21 | Method and device for processing direct current signal |
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| CN202110430299.4A CN113125847A (en) | 2021-04-21 | 2021-04-21 | Method and device for processing direct current signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113794410A (en) * | 2021-09-10 | 2021-12-14 | 福州大学 | Signal and power isolation system based on ARM intensive multi-path stepping motor control system |
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| CN102255275A (en) * | 2011-08-01 | 2011-11-23 | 常熟开关制造有限公司(原常熟开关厂） | DC low voltage circuit breaker protection device |
| CN202221885U (en) * | 2011-08-01 | 2012-05-16 | 常熟开关制造有限公司(原常熟开关厂） | Protection device of DC low voltage breaker |
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| CN102255275A (en) * | 2011-08-01 | 2011-11-23 | 常熟开关制造有限公司(原常熟开关厂） | DC low voltage circuit breaker protection device |
| CN202221885U (en) * | 2011-08-01 | 2012-05-16 | 常熟开关制造有限公司(原常熟开关厂） | Protection device of DC low voltage breaker |
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| CN113794410A (en) * | 2021-09-10 | 2021-12-14 | 福州大学 | Signal and power isolation system based on ARM intensive multi-path stepping motor control system |
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