CN115598411A - Real-time power acquisition circuit, method and system compatible with Alternating Current (AC) and Direct Current (DC) switch machines - Google Patents
Real-time power acquisition circuit, method and system compatible with Alternating Current (AC) and Direct Current (DC) switch machines Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
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- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
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Abstract
The utility model relates to a real-time power acquisition circuit, a method and a system of compatible interchange and direct current goat, through the power acquisition circuit that can compatible interchange goat and interchange goat, the scheme of adopting resistance direct type to gather acquires the voltage and the current signal that the load end was input, then through keeping apart amplifier circuit, carry out analog-to-digital conversion by the analog-to-digital conversion chip again, digital signal after the conversion gives programmable logic ware and carries out filtering process and data processing, the final data transmission after will handling carries out the analysis for terminal maintenance equipment such as CPU, thereby realized whole sampling circuit's high integration, it is miniaturized, the real-time of data acquisition has been promoted again simultaneously, the precision of data acquisition has been improved.
Description
Technical Field
The disclosure relates to the technical field of rail transit, and in particular to a real-time power acquisition circuit, a real-time power acquisition method, a real-time power acquisition system and an electronic device compatible with an alternating current point switch and a direct current point switch.
Background
The direct current switch machine and the alternating current switch machine are important equipment in an interlocking system in the field of rail transit, and a maintenance monitoring system needs to acquire the action voltage and the action current of the system through an external acquisition device and draw a power curve to diagnose and maintain faults.
At present, the acquisition devices of a direct current switch machine and an alternating current switch machine are not universal and are not economical and practical enough. Such as:
the patent with the publication number of CN201201614Y provides a current power sensor of a railway turnout switch machine, and the patent with the publication number of CN113933703A provides a power acquisition system and method of a switch machine, an object controller and a storage medium. The invention objects of the two patents are only limited to the ac switch machine, and the technical solutions adopted are both a voltage transformer and a current transformer.
Patent publication No. CN105866510a provides a monitoring system for railway outdoor trackside signal equipment, which can support a direct current switch machine and an alternating current switch machine at the same time, but needs two acquisition devices.
The technical scheme of the acquisition device is mainly realized by adopting magnetic isolation devices such as a voltage transformer, a current transformer, a Hall sensor and the like, and the problems of large volume, low real-time performance of data acquisition, poor accuracy of data acquisition and the like of the acquisition device are also brought.
Disclosure of Invention
In order to solve the above problems, the present application provides a real-time power acquisition circuit, a method, a system and an electronic device compatible with ac and dc switches.
In one aspect of the present application, a real-time power collecting circuit compatible with ac and dc switches is provided, including:
the sampling circuit is used for acquiring signals of the end to be sampled, performing analog-to-digital conversion on the acquired signals and then sending the signals to the programmable logic device;
the programmable logic device is used for receiving the digital signals obtained after analog-to-digital conversion, filtering the digital signals, calculating power data of the digital signals according to the type of the collected signals, and sending the power data to the terminal maintenance equipment;
the sampling circuit is electrically connected with the programmable logic device.
As an optional embodiment of the present application, optionally, the programmable logic performs power data calculation on the digital signal according to a type of the collected signal, including:
when the collected signal is an alternating current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time, fourier transform is carried out after the filtering processing, and the phase difference phi of the voltage and the current is calculated; according to power calculation formula
Calculating to obtain final power data, and then sending the power data to terminal maintenance equipment;
when the acquired signal is a direct current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time to obtain voltage and current data in the filtered digital signal; and calculating to obtain final power data according to a power calculation formula P = U × I, and then sending the power data to the terminal maintenance equipment.
As an optional implementation of the present application, optionally, the sampling circuit includes:
the voltage sampling circuit loop is used for collecting voltage signals;
the voltage sampling circuit loop comprises: a first input terminal, a first resistor, a second input terminal, a first isolation operational amplifier and a first analog-to-digital conversion chip,
the first input terminal inputs a signal to be sampled, and the second input terminal is connected with a reference signal of the signal to be sampled;
the first input terminal, the first resistor, the second resistor and the second input terminal are sequentially connected in series;
the first isolation operational amplifier is connected in parallel with two ends of the second resistor;
the first isolation operational amplifier is connected with the first analog-to-digital conversion chip in series, and the first analog-to-digital conversion chip is connected with the programmable logic device in series.
As an optional implementation of the present application, optionally, the sampling circuit further includes:
the current sampling circuit loop is used for acquiring current signals;
the current sampling circuit loop comprises: a first input terminal, a third resistor, an output terminal, a second isolation operational amplifier, and a second analog-to-digital conversion chip,
the first input terminal inputs a signal to be sampled, and the output terminal is connected with a load end of the signal to be sampled;
the first input terminal, the third resistor and the output terminal are sequentially connected in series;
the second isolation operational amplifier the resistor is connected to two ends of the third resistor in parallel;
the second isolation operational amplifier is connected with the second analog-to-digital conversion chip in series, and the second analog-to-digital conversion chip is connected with the programmable logic device in series.
As an optional implementation of the present application, optionally, the number of the sampling circuits is at least one.
As an optional embodiment of the present application, optionally, the number of the sampling circuits does not exceed three.
On the other hand, the application provides a real-time power acquisition method compatible with an alternating current point switch and a direct current point switch, which comprises the following steps:
based on the real-time power acquisition circuit compatible with the alternating current and direct current point switches, acquiring voltage signals and current signals of input signals to be sampled;
sending the collected voltage signal and current signal to an isolation operational amplifier for signal amplification;
the amplified signal is subjected to analog-to-digital conversion through an analog-to-digital conversion chip to obtain a digital signal, and the digital signal is sent to a programmable logic device;
the programmable logic device receives the digital signals obtained after analog-to-digital conversion, carries out filtering processing on the digital signals, carries out power data calculation on the digital signals according to the type of the collected signals, and sends the power data to the terminal maintenance equipment.
As an optional implementation of the present application, optionally, the receiving, by the programmable logic device, the digital signal obtained through analog-to-digital conversion, performing filtering processing on the digital signal, performing power data calculation on the digital signal according to the type of the acquired signal, and sending the power data to the terminal maintenance device includes:
according to the collected signals, judging the type of the input signals to be sampled:
when the collected signal is an alternating current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time, fourier transform is carried out after the filtering processing, and the phase difference phi of the voltage and the current is calculated; according to power calculation formula
Calculating to obtain final power data, and then sending the power data to terminal maintenance equipment;
when the acquired signal is a direct current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time to obtain voltage and current data in the filtered digital signal; and calculating to obtain final power data according to a power calculation formula P = U × I, and then sending the power data to the terminal maintenance equipment.
In another aspect of the present application, a real-time power collecting system compatible with ac and dc switches is further provided, including:
an AC/DC input power supply;
the real-time power acquisition circuit compatible with the alternating current and direct current point switch is arranged on the power acquisition circuit;
a switch machine drive circuit;
an AC/DC switch machine;
maintaining the system;
the alternating current/direct current input power supply, the real-time power acquisition circuit, the switch machine driving circuit and the alternating current/direct current switch machine are electrically connected in sequence;
the maintenance system is electrically connected with the real-time power acquisition circuit.
In another aspect of the present application, an electronic device is further provided, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the switch machine real-time power collection method when executing the executable instructions.
The invention has the technical effects that:
this application is through the power acquisition circuit who provides can compatible direct current goat and alternating current goat, the scheme that adopts resistance direct type to gather acquires voltage and the current signal that the load end was input, then through keeping apart amplifier circuit, carry out the analog-to-digital conversion by the analog-to-digital conversion chip again, digital signal after the conversion gives programmable logic ware and carries out filtering process and data processing, finally give terminal maintenance equipment such as CPU with data transmission after handling and carry out the analysis, thereby realized whole sampling circuit's high integration, and is small-size, data acquisition's real-time has been promoted again simultaneously, the precision of data acquisition has been improved.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of a power harvesting circuit according to the present invention;
fig. 2 shows a block diagram of an application circuit of the ac switch machine according to the invention;
FIG. 3 is a schematic diagram of the power acquisition circuitry of the AC switch machine of the present invention;
fig. 4 shows a block diagram of an application circuit of the dc switch machine according to the invention;
fig. 5 shows a schematic diagram of the power acquisition circuitry of the dc switch machine of the present invention.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
Interpretation of terms:
a Power Acquisition Circuit;
a switcher Drive Circuit;
a Maintenance System (terminal Maintenance device) Maintenance System;
an alternating current Point (AC Point);
a direct current Point switch (DC Point);
an INPUT terminal INPUT;
and an OUTPUT terminal OUTPUT.
According to the technology, a power acquisition circuit compatible with a direct current switch machine and an alternating current switch machine is adopted, a scheme of direct resistance acquisition is adopted to obtain voltage and current signals input by a load end, then the voltage and current signals pass through an isolation amplifying circuit and are subjected to analog-to-digital conversion by an analog-to-digital conversion chip, converted digital signals are sent to a programmable logic controller for filtering processing and data processing, and finally processed data are transmitted to terminal maintenance equipment such as a CPU (central processing unit) for analysis.
In one circuit system, the power acquisition circuit can be provided with at least one path.
Example 1
As shown in fig. 1, in one aspect, the present application provides a real-time power acquisition circuit compatible with ac and dc switches, including:
the sampling circuit is used for acquiring signals of the end to be sampled, performing analog-to-digital conversion on the acquired signals and then transmitting the acquired signals to the programmable logic device;
the programmable logic device is used for receiving the digital signals obtained after analog-to-digital conversion, filtering the digital signals, calculating power data of the digital signals according to the type of the collected signals, and sending the power data to the terminal maintenance equipment;
the sampling circuit is electrically connected with the programmable logic device.
Each power acquisition circuit consists of a voltage sampling circuit loop, a current sampling circuit loop, and an isolation operational amplifier and an analog-to-digital conversion chip which are respectively matched with the voltage sampling circuit loop and the current sampling circuit loop. In the power acquisition circuit, a sampling circuit is connected with a power supply of a signal to be input, and a voltage sampling circuit loop transmits a voltage signal of the input signal to be sampled to a programmable logic device FPGA after an isolation method and analog-to-digital conversion, so that a voltage value of the signal to be sampled is obtained; the corresponding current sampling circuit loop obtains a current signal (actually, a voltage value, I = U/R needs to be converted and calculated) of a signal to be sampled, and sends the current signal to the programmable logic device FPGA after an isolation method and analog-to-digital conversion, so as to obtain a current value of the signal to be sampled. And the FPGA carries out power calculation according to the processed voltage and current data. The calculation is performed specifically according to the data type of the sampling signal.
The power calculation mode of the FPGA on the sampling signal is calculated according to the type of the sampling signal, so that two sets of power calculation algorithms (programs/algorithms are not limited) are built in the FPGA, and calling is carried out according to the judged type of the sampling signal.
As an optional implementation of the present application, optionally, the performing, by the programmable logic device, power data calculation on the digital signal according to the type of the acquired signal includes:
when the collected signal is an alternating current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time, fourier transform is carried out after the filtering processing, and the phase difference phi of the voltage and the current is calculated; according to power calculation formula
Calculating to obtain final power data, and then sending the power data to terminal maintenance equipment;
when the acquired signal is a direct current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time to obtain voltage and current data in the filtered digital signal; and calculating to obtain final power data according to a power calculation formula P = U × I, and then sending the power data to the terminal maintenance equipment.
In this embodiment, taking the first power collecting circuit in the upper part of fig. 1 as an example, the power collecting circuit includes a first INPUT terminal INPUT1, a second INPUT terminal INPUT4, an OUTPUT terminal OUTPUT1, a first resistor R1, a second resistor R2, a third resistor R3, a first isolating operational Amplifier 1, a first analog-to-digital conversion chip ADC1, a second isolating operational Amplifier 2, and a second analog-to-digital conversion chip ADC 2. The first analog-to-digital conversion chip ADC1 and the second analog-to-digital conversion chip ADC2 are respectively connected with an interface of the programmable logic unit FPGA in series.
As an optional implementation of the present application, optionally, the sampling circuit includes:
the voltage sampling circuit loop is used for collecting voltage signals;
the voltage sampling circuit loop comprises: a first input terminal, a first resistor, a second input terminal, a first isolation operational amplifier and a first analog-to-digital conversion chip,
the first input terminal inputs a signal to be sampled, and the second input terminal is connected with a reference signal of the signal to be sampled;
the first input terminal, the first resistor, the second resistor and the second input terminal are sequentially connected in series;
the first isolation operational amplifier is connected in parallel with two ends of the second resistor;
the first isolation operational amplifier is connected with the first analog-to-digital conversion chip in series, and the first analog-to-digital conversion chip is connected with the programmable logic device in series.
The specific circuit connection relationship of the voltage sampling circuit loop can be seen in fig. 1. The voltage sampling circuit loop is as follows:
the first INPUT terminal INPUT1 is connected to an INPUT signal to be sampled, and the first INPUT terminal INPUT4 is connected to an INPUT reference signal of the signal to be sampled. After a sampled signal passes through a voltage division network of a first resistor R1 and a second resistor R2, small voltage signals at two ends of the second resistor R2 are transmitted to a first isolation operational Amplifier Amplifier 1, are isolated and amplified, are sampled by a first analog-to-digital conversion chip ADC1, and are subjected to filtering processing through digitally sampled signals and finally digital signals obtained through sampling of a programmable logic device FPGA.
As an optional implementation of this application, optionally, the sampling circuit further includes:
the current sampling circuit loop is used for acquiring current signals;
the current sampling circuit loop comprises: a first input terminal, a third resistor, an output terminal, a second isolation operational amplifier, and a second analog-to-digital conversion chip,
the first input terminal inputs a signal to be sampled, and the output terminal is connected with a load end of the signal to be sampled;
the first input terminal, the third resistor and the output terminal are sequentially connected in series;
the second isolation operational amplifier is connected in parallel with two ends of the third resistor;
the second isolation operational amplifier is connected with the second analog-to-digital conversion chip in series, and the second analog-to-digital conversion chip is connected with the programmable logic device in series.
The specific circuit connection relationship of the current sampling circuit loop can be seen in fig. 1. The current sampling circuit loop is as follows:
the first input terminal OUTPUT1 is connected with a load end of a signal to be sampled, when the signal to be sampled drives a load, current flows through a third resistor R3 which is connected in series in a loop, small voltage signals at two ends of the third resistor R3 are transmitted to a second isolation operational Amplifier 2, the small voltage signals are isolated and amplified, then are sampled by a second analog-to-digital conversion chip ADC2, and finally are filtered through digital signals obtained by digital sampling through a programmable logic device FPGA.
When the collected signal is an alternating current signal, the FPGA finally carries out filtering processing on the voltage and current data sampled in real time, fourier transform is carried out after the filtering processing, the phase difference phi of the voltage and the current is calculated, and then the power calculation formula is used for calculating the phase difference phi of the voltage and the current
The final power data can be obtained. And finally, the power data is sent to the terminal maintenance equipment through the network communication port EHTERNET.
When the acquired signal is a direct current signal, the FPGA directly carries out operation processing on the filtered voltage and current data according to a power calculation formula P = U × I because the direct current voltage and the direct current have no phase difference, and the final power data can be obtained. And finally, the power data is sent to the terminal maintenance equipment through the network communication port EHTERNET.
As an optional implementation of the present application, optionally, the number of the sampling circuits is at least one. The sampling circuit of the application can be arranged in one path and corresponds to an alternating current/direct current input power supply.
As an optional embodiment of the present application, optionally, the number of the sampling circuits does not exceed three. In order to ensure the computation performance and the carrying power, at most, three paths are not exceeded, as shown in fig. 1, and three paths are adopted in the present embodiment.
Based on the Power Acquisition Circuit, the embodiment also provides an application method of the Circuit.
On the other hand, the application provides a real-time power acquisition method compatible with an alternating current switch and a direct current switch, which comprises the following steps:
based on the real-time power acquisition circuit compatible with the alternating current and direct current point switches, acquiring voltage signals and current signals of input signals to be sampled;
sending the collected voltage signal and current signal to an isolation operational amplifier for signal amplification;
the amplified signal is subjected to analog-to-digital conversion through an analog-to-digital conversion chip to obtain a digital signal, and the digital signal is sent to a programmable logic device;
the programmable logic device receives the digital signals obtained after analog-to-digital conversion, carries out filtering processing on the digital signals, carries out power data calculation on the digital signals according to the type of the collected signals, and sends the power data to the terminal maintenance equipment.
As an optional implementation of the present application, optionally, the receiving, by the programmable logic device, the digital signal obtained through analog-to-digital conversion, performing filtering processing on the digital signal, performing power data calculation on the digital signal according to the type of the acquired signal, and sending the power data to the terminal maintenance device includes:
according to the collected signals, judging the type of the input signals to be sampled:
when the collected signal is an alternating current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time, fourier transform is carried out after the filtering processing, and the phase difference phi of the voltage and the current is calculated; according to power calculation formula
Calculating to obtain final power data, and then sending the power data to terminal maintenance equipment;
when the acquired signal is a direct current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time to obtain voltage and current data in the filtered digital signal; and calculating to obtain final power data according to a power calculation formula P = U × I, and then sending the power data to the terminal maintenance equipment.
The above method is specifically combined with the description part of the circuit, and is not repeated herein.
It should be apparent to those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, and the program may be stored in a computer readable storage medium, and when executed, may include the processes of the embodiments of the control methods as described above. The modules or steps of the invention described above can be implemented by a general purpose computing device, they can be centralized on a single computing device or distributed over a network of multiple computing devices, and they can alternatively be implemented by program code executable by a computing device, so that they can be stored in a storage device and executed by a computing device, or they can be separately fabricated into various integrated circuit modules, or multiple modules or steps thereof can be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, and the program may be stored in a computer readable storage medium, and when executed, may include the processes of the embodiments of the control methods as described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a Random Access Memory (RAM), a flash memory (FlashMemory), a hard disk (hard disk drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Therefore, this application passes through the power acquisition circuit, the scheme that adopts resistance direct mode to gather carries out the input signal sampling, through keeping apart amplifier circuit, carry out analog-to-digital conversion by the analog-to-digital conversion chip again, digital signal after the conversion gives programmable logic ware FPGA and carries out filtering process and data processing, terminal maintenance equipment such as CPU is given with the data transmission after handling to final FPGA and is analyzed, thereby realized the high integration of whole sampling circuit, it is miniaturized, data acquisition's real-time has been promoted again simultaneously, the precision of data acquisition has been improved.
It should be noted that, although the power calculation method of the input signal is described above by taking a power acquisition circuit as an example, those skilled in the art can understand that the disclosure should not be limited thereto. In fact, the user can flexibly set the number of the power acquisition circuits according to the actual application scene as long as the technical functions of the present application can be realized according to the above technical method.
Example 2
Based on the implementation principle of embodiment 1, in another aspect of the present application, a real-time power acquisition system compatible with an ac and a dc switch machine is further provided, including:
an AC/DC input power supply;
the real-time power acquisition circuit compatible with the alternating current and direct current point switch is arranged on the power acquisition circuit;
a switch machine drive circuit;
an AC/DC switch;
maintaining the system;
the alternating current/direct current input power supply, the real-time power acquisition circuit, the switch machine driving circuit and the alternating current/direct current switch machine are electrically connected in sequence;
the maintenance system is electrically connected with the real-time power acquisition circuit.
The method specifically includes power acquisition of an ac switch and power acquisition of a dc switch, which will be described below separately.
1. Power collection for AC point switch
As shown in fig. 2, it is a block diagram of an application Circuit of an AC switch machine, and includes an input of a three-phase AC Power supply AC380V, a Power Acquisition Circuit, a switch machine driving Circuit, a Maintenance System (terminal Maintenance device) Maintenance System, and an AC switch machine AC Point. The Power Acquisition Circuit is described in embodiment 1.
Substituting it into fig. 2, the power acquisition circuit of the ac switch machine shown in fig. 3 is formed, in which:
the terminal INPUT1 is connected with the C phase of an AC point machine three-phase driving power supply AC 380V; AC380V C;
the terminal INPUT2 is connected with the B phase of the three-phase driving power AC380V of the alternating current point switch; AC380V B;
the terminal INPUT3 is connected with the phase A of an AC point machine three-phase driving power supply AC 380V; AC380V A;
the terminals INPUT4, INPUT5 and INPUT6 are connected with a zero line N of a three-phase driving power supply AC380V of the AC point switch; AC380V N;
the terminals OUTPUT1, OUTPUT2 and OUTPUT3 are connected to a Drive Circuit of the point switch;
the communication port ETHERNET is accessed to a Maintenance System Maintenance System.
2. Collecting the power of the DC switch machine,
As shown in fig. 4, it is a Circuit diagram of an application Circuit of a DC switch machine, including an input of a DC Power supply DC220V, a Power Acquisition Circuit, a switch machine driving Circuit, a Maintenance System (terminal Maintenance device) Maintenance System, and a DC switch machine DC Point.
Substituting the Power Acquisition Circuit of fig. 1 into fig. 4, the Power Acquisition Circuit of the dc switch machine shown in fig. 5 is formed, wherein:
the terminal INPUT1 is connected with a DC switch machine driving power supply DC220V plus DC220V +;
the terminal INPUT2 is suspended;
the terminal INPUT3 is suspended;
the terminal INPUT4 is connected with a driving power supply DC220V negative of a direct current switch machine, namely DC220V-;
the terminal OUTPUT1 is connected to a driving Circuit Drive of a point switch;
the communication port ETHERNET is accessed to a Maintenance System Maintenance System.
The power calculation of the ac/dc switch machine described above may be specifically described with reference to the application principle of embodiment 1.
With the above design, the following advantages are provided:
the circuit components are highly integrated, the whole volume is small, and the installation is convenient;
the interface is compatible with the circuit interfaces of the existing direct current switch machine and the alternating current switch machine, so that the maintenance and the upgrade are convenient;
high-speed real-time sampling, the data is more accurate.
Example 3
Still further, in another aspect of the present application, an electronic device is further provided, including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the switch machine real-time power collection method described above when executing the executable instructions.
The disclosed embodiments provide an electronic device comprising a processor and a memory for storing processor-executable instructions. Wherein the processor is configured to implement a real-time power harvesting circuit compatible with ac and dc switch machines as described in any one of the preceding paragraphs when executing the executable instructions.
Here, it should be noted that the number of processors may be one or more. Meanwhile, in the electronic device of the embodiment of the present disclosure, an input device and an output device may be further included. The processor, the memory, the input device, and the output device may be connected by a bus, or may be connected by other means, and are not limited specifically herein.
The memory, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and various modules, such as: the disclosed embodiment relates to a program or a module corresponding to a real-time power acquisition circuit compatible with an Alternating Current (AC) switch machine and a Direct Current (DC) switch machine. The processor executes various functional applications and data processing of the electronic device by running software programs or modules stored in the memory.
The input device may be used to receive an input number or signal. Wherein the signal may be a key signal generated in connection with user settings and function control of the device/terminal/server. The output means may comprise a display device such as a display screen.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A real-time power harvesting circuit compatible with ac and dc switches, comprising:
the sampling circuit is used for acquiring signals of the end to be sampled, performing analog-to-digital conversion on the acquired signals and then transmitting the acquired signals to the programmable logic device;
the programmable logic device is used for receiving the digital signals obtained after analog-to-digital conversion, filtering the digital signals, calculating power data of the digital signals according to the type of the collected signals, and sending the power data to the terminal maintenance equipment;
the sampling circuit is electrically connected with the programmable logic device.
2. The real-time power harvesting circuit of a compatible ac and dc switch machine as recited in claim 1, wherein said programmable logic performs power data calculations on said digital signal based on the type of signal harvested, comprising:
when the collected signal is an alternating current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time, fourier transform is carried out after the filtering processing, and the phase difference phi of the voltage and the current is calculated; according to power calculation formula
Calculating to obtain the final powerSending the power data to terminal maintenance equipment;
when the acquired signal is a direct current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time to obtain voltage and current data in the filtered digital signal; and calculating to obtain final power data according to a power calculation formula P = U × I, and then sending the power data to the terminal maintenance equipment.
3. The real-time power harvesting circuit of a compatible ac and dc switch machine as claimed in claim 1, wherein the sampling circuit comprises:
the voltage sampling circuit loop is used for collecting voltage signals;
the voltage sampling circuit loop comprises: a first input terminal, a first resistor, a second input terminal, a first isolation operational amplifier and a first analog-to-digital conversion chip,
the first input terminal inputs a signal to be sampled, and the second input terminal is connected with a reference signal of the signal to be sampled;
the first input terminal, the first resistor, the second resistor and the second input terminal are connected in series in sequence;
the first isolation operational amplifier is connected in parallel with two ends of the second resistor;
the first isolation operational amplifier is connected with the first analog-to-digital conversion chip in series, and the first analog-to-digital conversion chip is connected with the programmable logic device in series.
4. The real-time power harvesting circuit of a compatible ac and dc switch machine as recited in claim 3, wherein said sampling circuit further comprises:
the current sampling circuit loop is used for acquiring current signals;
the current sampling circuit loop comprises: a first input terminal, a third resistor, an output terminal, a second isolation operational amplifier, and a second analog-to-digital conversion chip,
the first input terminal inputs a signal to be sampled, and the output terminal is connected with a load end of the signal to be sampled;
the first input terminal, the third resistor and the output terminal are sequentially connected in series;
the second isolation operational amplifier is connected in parallel with two ends of the third resistor;
the second isolation operational amplifier is connected with the second analog-to-digital conversion chip in series, and the second analog-to-digital conversion chip is connected with the programmable logic device in series.
5. The real-time power harvesting circuit of a compatible ac and dc switch machine as recited in claim 1, wherein the number of said sampling circuits is at least one.
6. The real-time power harvesting circuit of a compatible ac and dc switch machine as recited in claim 1, wherein the number of sampling circuits is no more than three.
7. A real-time power acquisition method compatible with an alternating current switch machine and a direct current switch machine is characterized by comprising the following steps:
the real-time power acquisition circuit compatible with the alternating current and direct current switch machine according to any one of claims 1-6, wherein the voltage signal and the current signal of the input signal to be sampled are acquired;
sending the collected voltage signal and current signal to an isolation operational amplifier for signal amplification;
the amplified signal is subjected to analog-to-digital conversion through an analog-to-digital conversion chip to obtain a digital signal, and the digital signal is sent to a programmable logic device;
the programmable logic device receives the digital signals obtained after analog-to-digital conversion, carries out filtering processing on the digital signals, carries out power data calculation on the digital signals according to the type of the acquired signals, and sends the power data to the terminal maintenance equipment.
8. The method for real-time power collection of compatible ac and dc switch machines as claimed in claim 7, wherein the programmable logic device receives the digital signal obtained after the analog-to-digital conversion and performs the filtering process on the digital signal, and performs the power data calculation on the digital signal according to the type of the collected signal, and sends the power data to the terminal maintenance device, including:
according to the acquisition signal, judging the type of the input signal to be sampled:
when the collected signal is an alternating current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time, fourier transform is carried out after the filtering processing, and the phase difference phi of the voltage and the current is calculated; according to power calculation formula
Calculating to obtain final power data, and then sending the power data to terminal maintenance equipment;
when the acquired signal is a direct current signal, the programmable logic device carries out filtering processing on the digital signal sampled in real time to obtain voltage and current data in the filtered digital signal; and calculating to obtain final power data according to a power calculation formula P = U × I, and then sending the power data to the terminal maintenance equipment.
9. A real-time power acquisition system compatible with ac and dc switches, comprising:
an AC/DC input power supply;
the real-time power harvesting circuit of a compatible ac and dc switch machine of any of claims 1-6;
a switch machine drive circuit;
an AC/DC switch machine;
maintaining the system;
the alternating current/direct current input power supply, the real-time power acquisition circuit, the switch machine driving circuit and the alternating current/direct current switch machine are electrically connected in sequence;
the maintenance system is electrically connected with the real-time power acquisition circuit.
10. An electronic device, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the switch machine real-time power harvesting method of any one of claims 7-8 when executing the executable instructions.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116819213A (en) * | 2023-07-04 | 2023-09-29 | 中国建筑科学研究院有限公司 | Remote test self-adaptive interface data acquisition method, system and application program |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116819213A (en) * | 2023-07-04 | 2023-09-29 | 中国建筑科学研究院有限公司 | Remote test self-adaptive interface data acquisition method, system and application program |
| CN116819213B (en) * | 2023-07-04 | 2024-04-16 | 中国建筑科学研究院有限公司 | Remote test self-adaptive interface data acquisition method, system and application program |
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