CN101634579A - Electronic equipment for measuring process parameters - Google Patents
Electronic equipment for measuring process parameters Download PDFInfo
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- CN101634579A CN101634579A CN200810116890A CN200810116890A CN101634579A CN 101634579 A CN101634579 A CN 101634579A CN 200810116890 A CN200810116890 A CN 200810116890A CN 200810116890 A CN200810116890 A CN 200810116890A CN 101634579 A CN101634579 A CN 101634579A
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- digital communication
- electronic equipment
- process parameters
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses electronic equipment for measuring process parameters, belongs to the field of electronics, and in particular relates to an improvement on the structure of electronic equipment for measuring process parameters. The electronic equipment for measuring the process parameters is mainly used for connecting a two-wire circuit and realizing supply of a power supply and digital communication of a processing control system through the two-wire circuit. The invention provides the electronic equipment capable of reliably measuring the process parameters of the digital communication with minimum power consumption. The electronic equipment comprises a current adjusting part, a digital communication part, the power supply, a current limiting part, an ultrasonic emitter, a receiver, a microprocessor CPU, an A/D converter and a memory; a digital communication signal is connected with the current adjusting part and an input end of the A/D converter; an output end of the current adjusting part is connected with an input end of the digital communication part; and an output end of the digital communication part is respectively connected with the current limiting part, the receiver and the microprocessor CPU through the power supply.
Description
Technical field:
The invention belongs to electronic applications, relate in particular to a kind of improvement of structure of electronic equipment of measurement process parameters, be mainly used in two-wire circuit and link to each other, by this two-wire circuit realize providing of power supply and with the digital communication of process control system.
Background technology:
At present, the electronic equipment of the existing measurement process parameters that connects by two-wire circuit, for example use as radar or ultrasonic liquid level measuring meter, the ultrasonic liquid level measuring meter is launched sound wave by means of being the sensor device of form with the ultrasonic sensor to the filling surface that is positioned at container.Receiving after the signal content of filling surface, can calculate liquid level in the container by analysis to signal propagation time.Wherein, the control device in measuring equipment is coordinated the acting in conjunction of all circuit components of participating or measuring equipment parts.In a radar level gauging meter, produce and emission radar pulse rather than ultrasound wave.
Usually connecing the two-wire circuit that the hierarchical levels of open-air bus system comes into operation provides this measuring equipment of operation required electric energy on the one hand, be used on the other hand carrying out digital communication with position process control system thereon, the effect of this process control system is that the measurement result that is provided by measuring equipment is further processed.
There is following shortcoming in above-mentioned measuring equipment:
The power consumption fluctuation is very big, on the one hand, is constant preparing measurement or carrying out the time interval internal power consumption of measuring; On the other hand, two-wire circuit At All Other Times in measuring equipment consume smaller power, make power consumption and current drain therefore descend greatly thus.It is the digital communication of being undertaken by two-wire circuit equally that the fluctuation of this electric current may be disturbed.Particularly fast, i.e. at short notice current fluctuation is verified be have interfering.In order to guarantee the dual-use function at two-wire circuit, people make the current drain of measuring equipment keep constant within the specific limits in order to make the communication between measuring equipment and the process control system not disturbed, stop current fluctuation fast.But in the prior art, if make electric current keep constant in whole power supply voltage range, then this measure causes power consumption to increase several times by high supply voltage, and this causes unnecessary energy consumption and very strong heating.
Summary of the invention:
The present invention is exactly at the problems referred to above, and a kind of electronic equipment that can carry out the measurement process parameters of reliable digital communication under minimal power consumption is provided.
For achieving the above object, the present invention adopts following technical scheme, the present invention includes the Current Regulation part, the digital communication part, power supply, current-limiting part, ultrasonic transmitter, receiver, microprocessor CPU, A/D converter and storer, digital communication signal and Current Regulation part, the input end of A/D converter links to each other, the output terminal of Current Regulation part links to each other with the input end of digital communication part, the output terminal of digital communication part is through power supply and current-limiting part, receiver, microprocessor CPU links to each other respectively, the output terminal one tunnel of current-limiting part links to each other with receiver through ultrasonic transmitter, one the tunnel links to each other with A/D converter, the output terminal of A/D converter links to each other with microprocessor CPU, and microprocessor CPU links to each other with storer respectively.
Beneficial effect of the present invention:
The present invention makes the communication between measuring equipment and the process control system not disturbed, makes the current drain of measuring equipment keep constant within the specific limits, and stops current fluctuation fast; And can not cause heat exhaustion and very strong heating.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment:
As shown in Figure 1, the present invention includes the Current Regulation part, the digital communication part, power supply, current-limiting part, ultrasonic transmitter, receiver, microprocessor CPU, A/D converter and storer, digital communication signal and Current Regulation part, the input end of A/D converter links to each other, the output terminal of Current Regulation part links to each other with the input end of digital communication part, the output terminal of digital communication part is through power supply and current-limiting part, receiver, microprocessor CPU links to each other respectively, the output terminal one tunnel of current-limiting part links to each other with receiver through ultrasonic transmitter, one the tunnel links to each other with A/D converter, the output terminal of A/D converter links to each other with microprocessor CPU, and microprocessor CPU links to each other with storer respectively.
Claims (1)
1, a kind of electronic equipment of measurement process parameters, it is characterized in that comprising the Current Regulation part, the digital communication part, power supply, current-limiting part, ultrasonic transmitter, receiver, microprocessor CPU, A/D converter and storer, digital communication signal and Current Regulation part, the input end of A/D converter links to each other, the output terminal of Current Regulation part links to each other with the input end of digital communication part, the output terminal of digital communication part is through power supply and current-limiting part, receiver, microprocessor CPU links to each other respectively, the output terminal one tunnel of current-limiting part links to each other with receiver through ultrasonic transmitter, one the tunnel links to each other with A/D converter, the output terminal of A/D converter links to each other with microprocessor CPU, and microprocessor CPU links to each other with storer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116890A CN101634579A (en) | 2008-07-21 | 2008-07-21 | Electronic equipment for measuring process parameters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116890A CN101634579A (en) | 2008-07-21 | 2008-07-21 | Electronic equipment for measuring process parameters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101634579A true CN101634579A (en) | 2010-01-27 |
Family
ID=41593838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810116890A Pending CN101634579A (en) | 2008-07-21 | 2008-07-21 | Electronic equipment for measuring process parameters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101634579A (en) |
-
2008
- 2008-07-21 CN CN200810116890A patent/CN101634579A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Ji Ling Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Ji Ling Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100127 |