CN105445535A - Digital current transducer and detection device - Google Patents
Digital current transducer and detection device Download PDFInfo
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- CN105445535A CN105445535A CN201510896591.XA CN201510896591A CN105445535A CN 105445535 A CN105445535 A CN 105445535A CN 201510896591 A CN201510896591 A CN 201510896591A CN 105445535 A CN105445535 A CN 105445535A
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- current transducer
- conversion circuit
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Abstract
The invention discloses a digital current transducer and a detection device. The digital current transducer comprises a signal acquisition circuit, a signal conversion circuit, an analog-digital conversion circuit, and a signal transmission circuit, wherein the signal acquisition circuit is used for acquisition of current signals output by a sensor to be detected; the signal conversion circuit is used for converting the current signals acquired by the signal acquisition circuit into direct current analog signals; the analog-digital conversion circuit is used for converting the direct current analog signals into digital signals; and the signal transmission circuit is used for transmitting the digital signals obtained by the analog-digital conversion circuit to a monitoring host. As the signals transmitted between the current transducer and the monitoring host are digital signals and the digital signals is high in interference immunity, the interference on the signals during the process for transmitting signals from the current transducer to the monitoring host can be reduced. Besides, as multi-channels of digital signals can be transmitted through one digital bus, a plurality of digital current transducers can transmit signals to the monitoring host only through one digital bus so that wiring between the current transducers and the monitoring host becomes convenient.
Description
Technical field
The present invention relates to signal processing technology field, particularly a kind of numeric type current transducer and detecting devices.
Background technology
Traditional current transducer is a kind of device current signal being converted to linear DC simulating signal, because the anti-interference of simulating signal in transmitting procedure is poor, the simulating signal that current transducer is exported can introduce larger signal disturbing in the process transferring to monitoring host computer; And, what export due to existing current transducer is simulating signal, a current transducer is made to need by an independently transmission line analog signal, by the analog signal transmission of output to monitoring host computer, when system needs to utilize monitoring host computer to monitor the signal that multiple stage current transducer collects, will make to need in system to arrange many transmission line analog signals accordingly, thus make the wiring of entire system comparatively complicated, and add system cost.
Can find out in sum how to reduce current transducer to the interference suffered by signal during monitoring host computer signal transmission, and facilitate the wiring between current transducer and monitoring host computer to be have problem to be solved at present.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of numeric type current transducer and detecting devices, reduce current transducer to the interference suffered by signal during monitoring host computer signal transmission, and facilitate the wiring between current transducer and monitoring host computer.Its concrete scheme is as follows:
A kind of numeric type current transducer, comprising:
The signal acquisition circuit that the current signal exported sensor to be measured gathers;
The current signal that described signal acquisition circuit collects is converted to the signaling conversion circuit of DC simulation signal;
The DC simulation signal be converted to by described signaling conversion circuit converts the analog to digital conversion circuit of digital signal to;
The digital signal obtained by analog-digital conversion circuit as described is sent to the signal sending circuit of monitoring host computer.
Preferably, described signal sending circuit comprises:
Receive the signal receiving module of the digital signal that analog-digital conversion circuit as described exports;
The digital signal that described signal receiving module receives is sent to the signal transmitting module of described monitoring host computer.
Preferably, described signal sending circuit comprises:
Receive the signal receiving module of the digital signal that analog-digital conversion circuit as described exports;
The signal processing module that the digital signal received described signal receiving module processes;
The signal that described signal processing module exports is sent to the signal transmitting module of described monitoring host computer.
Preferably, described signal processing module comprises:
Carry out amplifying the digital signal amplifying unit processed to the digital signal that described signal receiving module receives.
Preferably, described signal processing module also comprises:
The signal of described digital signal amplifying unit output is carried out to the signal filtering unit of filtering process.
Preferably, described signal filtering unit is low-pass filter.
The invention also discloses a kind of detecting devices, comprise aforesaid numeric type current transducer; Wherein, described detecting devices comprises N number of described numeric type current transducer, and N is positive integer; Also comprise:
Be connected with communication bus, and by described communication bus, obtain the monitoring host computer of the signal that signal sending circuit sends in numeric type current transducer described in each.
Preferably, described communication bus is RS485 bus.
In the present invention, numeric type current transducer comprises: the signal acquisition circuit that the current signal exported sensor to be measured gathers; The current signal collected by signal acquisition circuit converts the signaling conversion circuit of DC simulation signal to; The DC simulation signal be converted to by signaling conversion circuit converts the analog to digital conversion circuit of digital signal to; The digital signal obtained by analog to digital conversion circuit is sent to the signal sending circuit of monitoring host computer.Visible, in the present invention, by arranging an analog to digital conversion circuit in numeric type current transducer, thus the DC simulation signal obtained by signaling conversion circuit converts digital signal to, then the digital signal obtained by analog to digital conversion circuit by signal sending circuit is sent to monitoring host computer, also be, the signal transmitted between current transducer and monitoring host computer in the present invention is digital signal, because digital signal has extraordinary anti-interference, thus reduce current transducer to the interference suffered by signal during monitoring host computer signal transmission; In addition, because multiply digital signals can be transmitted by a number bus, thus make multiple stage numeric type current transducer only need just can transfer to monitoring host computer by a number bus, thus the wiring facilitated between current transducer and monitoring host computer, for the complexity reducing wiring provides possibility.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is a kind of numeric type current transducer structural representation disclosed in the embodiment of the present invention;
Fig. 2 is a kind of concrete numeric type current transducer structural representation disclosed in the embodiment of the present invention;
Fig. 3 is a kind of detecting devices structural representation disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of numeric type current transducer, shown in Figure 1, above-mentioned numeric type current transducer comprises:
The signal acquisition circuit 11 that the current signal exported sensor to be measured gathers;
The current signal that signal acquisition circuit 11 collects is converted to the signaling conversion circuit 12 of DC simulation signal;
The DC simulation signal be converted to by signaling conversion circuit 12 converts the analog to digital conversion circuit 13 of digital signal to;
The digital signal that analog to digital conversion circuit 13 obtains is sent to the signal sending circuit 14 of monitoring host computer.
In the embodiment of the present invention, numeric type current transducer comprises: the signal acquisition circuit that the current signal exported sensor to be measured gathers; The current signal collected by signal acquisition circuit converts the signaling conversion circuit of DC simulation signal to; The DC simulation signal be converted to by signaling conversion circuit converts the analog to digital conversion circuit of digital signal to; The digital signal obtained by analog to digital conversion circuit is sent to the signal sending circuit of monitoring host computer.
Visible, in the embodiment of the present invention, by arranging an analog to digital conversion circuit in numeric type current transducer, thus the DC simulation signal obtained by signaling conversion circuit converts digital signal to, then the digital signal obtained by analog to digital conversion circuit by signal sending circuit is sent to monitoring host computer, also be, the signal transmitted between current transducer and monitoring host computer in the embodiment of the present invention is digital signal, because digital signal has extraordinary anti-interference, thus reduce current transducer to the interference suffered by signal during monitoring host computer signal transmission; In addition, because multiply digital signals can be transmitted by a number bus, thus make multiple stage numeric type current transducer only need just can transfer to monitoring host computer by a number bus, thus the wiring facilitated between current transducer and monitoring host computer, for the complexity reducing wiring provides possibility.
The embodiment of the invention discloses a kind of concrete numeric type current transducer, relative to a upper embodiment, the present embodiment has done further instruction and optimization to technical scheme.Concrete:
In the present embodiment, signal sending circuit 14 can have various structures.
Wherein, a kind of concrete structure of signal sending circuit is: signal sending circuit comprises the signal receiving module receiving the digital signal that analog to digital conversion circuit exports, and the digital signal received by signal receiving module is sent to the signal transmitting module of monitoring host computer.
Shown in Figure 2, the another kind of concrete structure of signal sending circuit 14 is: the signal processing module 142 that signal sending circuit 14 comprises the signal receiving module 141 receiving the digital signal that analog to digital conversion circuit 13 exports, the digital signal received signal receiving module 141 processes, and the signal that signal processing module 142 exports is sent to the signal transmitting module 143 of monitoring host computer.
In order to improve the intensity of signal, in the present embodiment, above-mentioned signal processing module specifically can comprise: carry out amplifying the digital signal amplifying unit processed to the digital signal that signal receiving module receives.
In order to improve the degree of purity of signal, in the present embodiment, above-mentioned signal processing module can further include: the signal exported digital signal amplification unit carries out the signal filtering unit of filtering process.Wherein, signal filtering unit is preferably low-pass filter, for removing high frequency noise.
The embodiment of the invention also discloses a kind of detecting devices, comprise the current transducer of numeric type disclosed in previous embodiment; Wherein, shown in Figure 3, above-mentioned detecting devices comprises N number of numeric type current transducer, and N is positive integer; Also comprise:
Be connected with communication bus, and by above-mentioned communication bus, obtain the monitoring host computer 30 of the signal that signal sending circuit sends in each numeric type current transducer.
It should be noted that, in the present embodiment, preferred communication bus is RS485 bus.
The signal transmitted between current transducer and monitoring host computer in the embodiment of the present invention is digital signal, because digital signal has extraordinary anti-interference, thus reduces current transducer to the interference suffered by signal during monitoring host computer signal transmission; In addition, the N number of numeric type current transducer in the present embodiment only just need can carry out signal with monitoring host computer by a communication bus and be connected, thus facilitates the wiring between current transducer and monitoring host computer, reduces wiring complexity.
Finally, also it should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above a kind of numeric type current transducer provided by the present invention and detecting devices are described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a numeric type current transducer, is characterized in that, comprising:
The signal acquisition circuit that the current signal exported sensor to be measured gathers;
The current signal that described signal acquisition circuit collects is converted to the signaling conversion circuit of DC simulation signal;
The DC simulation signal be converted to by described signaling conversion circuit converts the analog to digital conversion circuit of digital signal to;
The digital signal obtained by analog-digital conversion circuit as described is sent to the signal sending circuit of monitoring host computer.
2. numeric type current transducer according to claim 1, is characterized in that, described signal sending circuit comprises:
Receive the signal receiving module of the digital signal that analog-digital conversion circuit as described exports;
The digital signal that described signal receiving module receives is sent to the signal transmitting module of described monitoring host computer.
3. numeric type current transducer according to claim 1, is characterized in that, described signal sending circuit comprises:
Receive the signal receiving module of the digital signal that analog-digital conversion circuit as described exports;
The signal processing module that the digital signal received described signal receiving module processes;
The signal that described signal processing module exports is sent to the signal transmitting module of described monitoring host computer.
4. numeric type current transducer according to claim 3, is characterized in that, described signal processing module comprises:
Carry out amplifying the digital signal amplifying unit processed to the digital signal that described signal receiving module receives.
5. numeric type current transducer according to claim 4, is characterized in that, described signal processing module also comprises:
The signal of described digital signal amplifying unit output is carried out to the signal filtering unit of filtering process.
6. numeric type current transducer according to claim 5, is characterized in that, described signal filtering unit is low-pass filter.
7. a detecting devices, is characterized in that, comprises the numeric type current transducer as described in any one of claim 1 to 6; Wherein, described detecting devices comprises N number of described numeric type current transducer, and N is positive integer; Also comprise:
Be connected with communication bus, and by described communication bus, obtain the monitoring host computer of the signal that signal sending circuit sends in numeric type current transducer described in each.
8. detecting devices according to claim 7, is characterized in that, described communication bus is RS485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896591.XA CN105445535A (en) | 2015-12-04 | 2015-12-04 | Digital current transducer and detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510896591.XA CN105445535A (en) | 2015-12-04 | 2015-12-04 | Digital current transducer and detection device |
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| CN105445535A true CN105445535A (en) | 2016-03-30 |
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| CN201510896591.XA Pending CN105445535A (en) | 2015-12-04 | 2015-12-04 | Digital current transducer and detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107478897A (en) * | 2017-07-25 | 2017-12-15 | 国网福建省电力有限公司 | Double loop exchanges transmitting system and its control method |
| CN109188985A (en) * | 2018-10-23 | 2019-01-11 | 国家地质实验测试中心 | Instrument state monitoring device |
| CN109671728A (en) * | 2017-10-13 | 2019-04-23 | 深圳芯启航科技有限公司 | A kind of image sensing cell, imaging sensor and display device |
| CN112953544A (en) * | 2021-02-02 | 2021-06-11 | 华立科技股份有限公司 | Data transmission system, method, device and medium |
| CN114137303A (en) * | 2021-10-14 | 2022-03-04 | 国能神皖安庆发电有限责任公司 | Measuring device and measuring method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478897A (en) * | 2017-07-25 | 2017-12-15 | 国网福建省电力有限公司 | Double loop exchanges transmitting system and its control method |
| CN109671728A (en) * | 2017-10-13 | 2019-04-23 | 深圳芯启航科技有限公司 | A kind of image sensing cell, imaging sensor and display device |
| CN109188985A (en) * | 2018-10-23 | 2019-01-11 | 国家地质实验测试中心 | Instrument state monitoring device |
| CN112953544A (en) * | 2021-02-02 | 2021-06-11 | 华立科技股份有限公司 | Data transmission system, method, device and medium |
| CN114137303A (en) * | 2021-10-14 | 2022-03-04 | 国能神皖安庆发电有限责任公司 | Measuring device and measuring method |
| CN114137303B (en) * | 2021-10-14 | 2024-03-01 | 国能神皖安庆发电有限责任公司 | Measuring device and measuring method |
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Application publication date: 20160330 |