CN202494730U - Signal processing device and testing system based on RTDS - Google Patents
Signal processing device and testing system based on RTDS Download PDFInfo
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- CN202494730U CN202494730U CN2012200007045U CN201220000704U CN202494730U CN 202494730 U CN202494730 U CN 202494730U CN 2012200007045 U CN2012200007045 U CN 2012200007045U CN 201220000704 U CN201220000704 U CN 201220000704U CN 202494730 U CN202494730 U CN 202494730U
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Abstract
本实用新型提供一种基于RTDS的信号处理装置及测试系统，其中，该信号处理装置包括：模拟滤波电路，与待测设备输出端连接，用于对待测设备输出的暂态信号进行模数滤波处理；信号处理电路，分别与模拟滤波电路和待测设备输出端连接，用于处理模拟滤波器的输出信号，并对待测设备的输出信号进行数字积分处理并输出。通过本实用新型，可以有效的实现模拟信号的抗干扰传输，保护测试系统中的模拟输入模块，从而可以降低测试系统的运行维护成本。
The utility model provides an RTDS-based signal processing device and a test system, wherein the signal processing device includes: an analog filter circuit connected to the output terminal of the device to be tested, and used for analog-digital filtering of the transient signal output by the device to be tested Processing; the signal processing circuit is respectively connected with the analog filter circuit and the output terminal of the device under test, and is used for processing the output signal of the analog filter, and performs digital integral processing and output on the output signal of the device under test. Through the utility model, the anti-interference transmission of the analog signal can be effectively realized, and the analog input module in the test system can be protected, so that the operation and maintenance cost of the test system can be reduced.
Description
Technical field
The utility model relates to electric system, particularly, relates to a kind of signal processing apparatus and test macro based on RTDS.
Background technology
At generator excitation parameter test system (RTDS for example; Real Time Digital Simulator; Full name is the real-timedigital simulation appearance) research in, how to adopt the expensive test macro of appropriate signal isolating means protective price to obtain paying close attention to widely.At present, employing is the isolation that the linear photoconductor coupling module is realized external analog input signal and RTDS input channel.The linear photoconductor coupling module adopts the light emitting diode of pairing, realizes that through feedback circuit light intensity and input voltage are directly proportional, and input circuit and output loop do not have direct electrical communication, realize that through light intensity signal is coupled to output loop from input circuit.But; When adopting the linear photoconductor coupling technique, the whole signal circuit overwhelming majority is still electric signal, introduces easily and disturbs; And input and output loop distance is nearly (less than 1 millimeter) too; Dielectric strength is no more than 3Kv, and this has just caused the damage of analog input module, and then has increased the operation expense of test macro and greatly reduced its service efficiency.
The utility model content
The fundamental purpose of the utility model embodiment is to provide a kind of signal processing apparatus and test macro based on RTDS, to solve the problem that analog input module that test macro of the prior art causes owing to signal disturbs damaged and then increased the test macro operation expense.
To achieve these goals; The utility model embodiment provides a kind of signal processing apparatus based on RTDS; Said device comprises: analogue filter circuit, be connected with the Devices to test output terminal, and be used for the transient signal of said Devices to test output is carried out the modulus Filtering Processing; Signal processing circuit is connected with said Devices to test output terminal with described analogue filter circuit respectively, is used for the output signal of treatment of simulated wave filter, and the output signal of said Devices to test is carried out digital integration processing and output.
Particularly; Described analogue filter circuit comprises: operational amplifier, first capacitor, second capacitor, first resistance, second resistance, the 3rd resistance and the 4th resistance; The in-phase end of said operational amplifier links to each other with second resistor; Said first resistor is connected the output terminal of said Devices to test and the end of oppisite phase of said operational amplifier; Be connected between the end of oppisite phase and output terminal of said operational amplifier after said the 3rd resistance and the series connection of the 4th resistance, said first capacitor is connected between the end of oppisite phase and output terminal of said operational amplifier, and said second capacitor is connected between the tie point and ground of said the 3rd resistance and the 4th resistance.
Above-mentioned signal processing circuit comprises: first analog-digital converter, be connected with described analogue filter circuit, and the output conversion of signals that is used for said analogue filter circuit is a digital signal; Digital integrator is connected with said Devices to test output terminal, is used for the output signal of said Devices to test is carried out the digital integration processing; Interface circuit is connected with described digital integrator, is used for the output signal of said digital integrator and the output signal of said analog-digital converter are sent to the light pulse change-over circuit.
Wherein, The digital integration implement body comprises: second analog-digital converter, totalizer, first Hi-pass filter and second Hi-pass filter; Wherein, Said second analog-digital converter is connected with said first Hi-pass filter with said Devices to test output terminal respectively, and described totalizer is connected with second Hi-pass filter with said first Hi-pass filter respectively, and described second Hi-pass filter is connected with said interface circuit.
The utility model embodiment also provides a kind of test macro based on RTDS, and described system comprises above-mentioned signal processing apparatus.
By means of technique scheme one of at least; Through analogue filter circuit and signal processing circuit the signal of Devices to test output is handled; Can effectively realize the anti-interference transmission of simulating signal; Protect the analog input module in the test macro, thereby can reduce the operation expense of test macro.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structured flowchart based on the signal processing apparatus of RTDS according to the utility model embodiment;
Fig. 2 is the circuit diagram according to the analogue filter circuit 1 of the utility model embodiment;
Fig. 3 is the structured flowchart according to the signal processing circuit 2 of the utility model embodiment;
Fig. 4 is the structural representation according to the digital integrator of the utility model embodiment.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Because test macro of the prior art can't effectively be realized the isolation of undesired signal, caused that analog input module is damaged easily in the test macro, and then caused the increase of test macro maintenance cost.Based on this, the utility model embodiment provides a kind of signal processing apparatus and test macro based on RTDS.Below in conjunction with accompanying drawing the utility model is elaborated.
The utility model embodiment provides a kind of signal processing apparatus based on RTDS, and is as shown in Figure 1, and this device comprises:
Can know by above description; Through analogue filter circuit and signal processing circuit the signal of Devices to test output is handled; Can effectively realize the anti-interference transmission of simulating signal; And then analog input module in the protection test macro, than prior art, thereby because the utility model embodiment can effectively protect analog input module can reduce the operation expense of test macro.
Particularly; As shown in Figure 2; Analogue filter circuit 1 comprises: operational amplifier U21, the first capacitor C21, the second capacitor C22, first resistance R 21, second resistance R 22, the 3rd resistance R 23 and the 4th resistance R 24; The in-phase end of operational amplifier U21 links to each other with second resistance R 22; First resistance R 21 is connected the output terminal of Devices to test and the end of oppisite phase of operational amplifier U21; Be connected between the end of oppisite phase and output terminal of operational amplifier U21 after the 3rd resistance R 23 and 24 series connection of the 4th resistance R, the first capacitor C21 is connected between the end of oppisite phase and output terminal of operational amplifier U21, and the second capacitor C22 is connected between the tie point and ground of the 3rd resistance R 23 and the 4th resistance R 24.
In practical operation, operational amplifier U21 can adopt the AD820AR of Analog Device company; The resistance of first resistance R 21 is 10k Ω, and second resistance R, 22 resistances are 8k Ω, and the resistance of the 3rd resistance R 23 and the 4th resistance R 24 is 25k Ω, and the temperature coefficient of above-mentioned resistance is all less than 15 * 10-6/ ℃.The appearance value of the first capacitor C21 is 100nF, and the appearance value of the second capacitor C22 is 0.01 μ F.
As shown in Figure 3, above-mentioned signal processing circuit 2 comprises:
The first analog-digital converter ADC1 is connected with analogue filter circuit, and the output conversion of signals that is used for analogue filter circuit is a digital signal;
Digital integrator is connected with the Devices to test output terminal, is used for the output signal of Devices to test is carried out the digital integration processing;
Interface circuit U31 is connected with digital integrator, is used for the output signal of digital integrator and the output signal of analog-digital converter are sent to the light pulse change-over circuit.This output can be through optical fiber output.
Preferably, above-mentioned ADC1 can adopt the ADS8365 of TI company, and that U31 adopts is the EP1C12Q240I7 of U.S. altera corp.
Particularly, as shown in Figure 4, above-mentioned digital integrator comprises:
The second analog-digital converter ADC2, totalizer AR, the first Hi-pass filter HPF1 and the second Hi-pass filter HPF2; Wherein, The second analog-digital converter ADC2 is connected with the first Hi-pass filter HPF1 with the Devices to test output terminal respectively; Totalizer AR is connected with the second Hi-pass filter HPF2 with the first Hi-pass filter HPF1 respectively, and the second Hi-pass filter HPF2 is connected with interface circuit.
Preferably, ADC2 adopts the ADS8365 of TI company, and HPF1, HPF2 and AR can be realized that the hardware platform of HPF1, HPF2 and AR can adopt TI company's T MS320F28335 to realize by software.
The utility model embodiment also provides a kind of test macro based on RTDS, and this system comprises above-mentioned signal processing apparatus, and this signal processing apparatus is arranged in the RTDS signal isolating device, can anti-interference signal, and protection RTDS input circuit.
Can know that by above description the utility model embodiment can realize the transmission that simulating signal is remote, noiseless, isolate, and can be used for distributed measurement, the Digital Simulation System that protection is expensive.
In sum, the utility model embodiment is mainly used in the input of protection RTDS to be isolated, and compares with prior art, and the utility model embodiment has following advantage:
1, has good transient characterisitics, in strong interference environment, can play a very good protection test macro;
2, have excellent temperature stability and anti-vibration characteristic, in-40 ℃～+ 80 ℃ range of temperature, the measuring error that the digitized measurement system causes because of temperature variation is less than ± 0.05%; External vibration can not have any impact to the accuracy of measurement mechanism.
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; And be not used in the protection domain that limits the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. the signal processing apparatus based on RTDS is characterized in that, described device comprises:
Analogue filter circuit is connected with the Devices to test output terminal, is used for the transient signal of said Devices to test output is carried out the modulus Filtering Processing;
Signal processing circuit is connected with said Devices to test output terminal with described analogue filter circuit respectively, is used for the output signal of treatment of simulated wave filter, and the output signal of said Devices to test is carried out digital integration processing and output.
2. device according to claim 1 is characterized in that, described analogue filter circuit comprises:
Operational amplifier, first capacitor, second capacitor, first resistance, second resistance, the 3rd resistance and the 4th resistance, wherein,
The in-phase end of said operational amplifier links to each other with second resistor; Said first resistor is connected the output terminal of said Devices to test and the end of oppisite phase of said operational amplifier; Be connected between the end of oppisite phase and output terminal of said operational amplifier after said the 3rd resistance and the series connection of the 4th resistance; Said first capacitor is connected between the end of oppisite phase and output terminal of said operational amplifier, and said second capacitor is connected between the tie point and ground of said the 3rd resistance and the 4th resistance.
3. device according to claim 1 is characterized in that, described signal processing circuit comprises:
First analog-digital converter is connected with described analogue filter circuit, and the output conversion of signals that is used for said analogue filter circuit is a digital signal;
Digital integrator is connected with said Devices to test output terminal, is used for the output signal of said Devices to test is carried out the digital integration processing;
Interface circuit is connected with described digital integrator, is used for the output signal of said digital integrator and the output signal of said analog-digital converter are sent to the light pulse change-over circuit.
4. device according to claim 3 is characterized in that, described digital integrator comprises:
Second analog-digital converter, totalizer, first Hi-pass filter and second Hi-pass filter, wherein,
Said second analog-digital converter is connected with said first Hi-pass filter with said Devices to test output terminal respectively; Described totalizer is connected with second Hi-pass filter with said first Hi-pass filter respectively, and described second Hi-pass filter is connected with said interface circuit.
5. the test macro based on RTDS is characterized in that, described system comprises like each described signal processing apparatus in the claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200007045U CN202494730U (en) | 2012-01-04 | 2012-01-04 | Signal processing device and testing system based on RTDS |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200007045U CN202494730U (en) | 2012-01-04 | 2012-01-04 | Signal processing device and testing system based on RTDS |
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| CN202494730U true CN202494730U (en) | 2012-10-17 |
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| CN2012200007045U Expired - Lifetime CN202494730U (en) | 2012-01-04 | 2012-01-04 | Signal processing device and testing system based on RTDS |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354025A (en) * | 2013-06-19 | 2013-10-16 | 许昌开普电器检测研究院 | RTDS data transmission device and method based on serial communication |
| CN107861497A (en) * | 2017-11-08 | 2018-03-30 | 广州供电局有限公司 | Realize the communicator and method of electric device control system test |
-
2012
- 2012-01-04 CN CN2012200007045U patent/CN202494730U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354025A (en) * | 2013-06-19 | 2013-10-16 | 许昌开普电器检测研究院 | RTDS data transmission device and method based on serial communication |
| CN103354025B (en) * | 2013-06-19 | 2017-07-14 | 许昌开普检测技术有限公司 | A kind of RTDS data transmission devices and method based on serial communication |
| CN107861497A (en) * | 2017-11-08 | 2018-03-30 | 广州供电局有限公司 | Realize the communicator and method of electric device control system test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NORTH CHINA POWER SCIENCE RESEARCH INST., CO., LTD Effective date: 20131031 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: NORTH CHINA POWER SCIENCE RESEARCH INST., CO., LTD. Effective date: 20131031 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100045 XICHENG, BEIJING TO: 100031 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131031 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: North China Electrical Power Research Institute LLC Address before: 100045 Beijing Fuxingmenwai Di Zang an Nan Xiang No. Patentee before: North China Electrical Power Research Institute LLC |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |