CN103134567A - High frequency electromagnetic level indicator - Google Patents
High frequency electromagnetic level indicator Download PDFInfo
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- CN103134567A CN103134567A CN2011103905558A CN201110390555A CN103134567A CN 103134567 A CN103134567 A CN 103134567A CN 2011103905558 A CN2011103905558 A CN 2011103905558A CN 201110390555 A CN201110390555 A CN 201110390555A CN 103134567 A CN103134567 A CN 103134567A
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- control circuit
- frequency electromagnetic
- probe
- mcu microprocessor
- sensing device
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Abstract
The invention discloses a high frequency electromagnetic level indicator which comprises a detector, a shell body and a control circuit. The control circuit comprises a microprogrammed control unit (MCU) microprocessor, a signal processing circuit, a highway addressable remote transducer (HART) communication protocol circuit, a power module and an output module, wherein the MCU microprocessor is used for controlling the whole control circuit, the signal processing circuit is used for converting a detected signal to provide the detected signal for the MCU microprocessor, the HART communication protocol circuit is used for a communication protocol of the control circuit, the power module is used for providing power for each part, and the output module is used for outputting an detection result of the MCU microprocessor. The control circuit is provided with a time calibration module used for conducting time calibration before a device is used. The high frequency electromagnetic level indicator has the advantages that according to the fact that the time calibration module is arranged in the control circuit, the time calibration can be conveniently conducted before detection, accuracy of time is ensured, and detection accuracy is improved.
Description
Technical field
The present invention relates to a kind of measurement mechanism, be specifically related to a kind of high-frequency electromagnetic level-sensing device.
Background technology
The high-frequency electromagnetic level-sensing device is used for measuring most liquid and pressed powder, such as water, oil, ethanol etc.And according to the difference of measuring media, different installation forms is arranged.Difference due to measuring media, the high-frequency electromagnetic level-sensing device is designed to multi-signal output, and when twice detection was different medium, existing high-frequency electromagnetic level-sensing device was due to not free calibration function, have a strong impact on measuring accuracy, so the calibration before each the detection is very important.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide and a kind ofly guarantee the time accuracy in advance line time calibration of measurement, improve the high-frequency electromagnetic level-sensing device of measuring accuracy.
For achieving the above object, technical scheme of the present invention is as follows: a kind of high-frequency electromagnetic level-sensing device, it is characterized in that, comprise sniffer, housing and control circuit, described control circuit comprises be used to the MCU microprocessor of controlling whole control circuit, will offer the signal processing circuit of MCU microprocessor after the detectable signal conversion, is used for the HART communication protocol circuit of described control circuit communication protocol, provide the power module of electric energy for each several part, the output module of output MCU microprocessor testing result; Described control circuit is provided with module time calibration of using the line time calibration of advancing for equipment.
Preferably, described sniffer comprises probe, probe and connector, described probe is connected to an end of described probe, described connector is connected to the other end of described probe, described housing comprises main body and bonnet, and described bonnet is fixed on an end of described main body, and the other end of described main body is fixedly connected with described connector, described control circuit is arranged in described housing, and the cable in described control circuit and described probe is electrically connected to.
Preferably, described control circuit is provided with the overcurrent protection module of monitoring for to the testing process electric current.
Preferably, described housing is provided with the pilot lamp that shows described MCU microprocessor indicator signal and the toggle switch that operates described MCU microprocessor.
Preferably, also be provided with on described housing for the input terminal and the lead-out terminal that connect external unit.
Preferably, described probe is Teflon type, thimble tube, wirerope type or single rod type.
Adopt the beneficial effect of the technical program to be: by at control circuit setup times calibration module, conveniently to guarantee the accuracy of time in the measurement line time calibration of advancing, improve measuring accuracy.
By at control circuit, overcurrent protection module being set, electric current in testing process is monitored, guarantee that product uses safety, thereby guarantee the serviceable life of product.
Simultaneously equipment is easy for installation, simple in structure, only need be directly installed on the pipeline of required test liquid to measure, and satisfies different use occasions.
Description of drawings
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, the below will do to introduce simply to the accompanying drawing of required use in the embodiment technical description, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present invention.
Fig. 2 is control circuit schematic diagram of the present invention.
Numeral and the represented corresponding component title of letter in figure:
1. probe 2. probe 3. connector 4. main body 5. bonnet 6. set bolt 7. cable 8. control circuits.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment 1
As shown in Figure 1, a kind of embodiment of the present invention, a kind of high-frequency electromagnetic level-sensing device, comprise sniffer, housing and control circuit 8, control circuit comprises be used to the MCU microprocessor of controlling whole control circuit, will offer the signal processing circuit of MCU microprocessor after the detectable signal conversion, is used for the HART communication protocol circuit of described control circuit communication protocol, provide the power module of electric energy for each several part, the output module of output MCU microprocessor testing result.Housing is provided with the pilot lamp that shows MCU microprocessor indicator signal and the toggle switch that operates the MCU microprocessor.Also be provided with on housing for the input terminal and the lead-out terminal that connect external unit.Control circuit is provided with module time calibration for the alignment time, before using equipment Inspection, operates the MCU microprocessor by plucking number sign switch, first to the calibrating of equipment, thereby makes equipment accurately detect the mistiming, guarantees the accuracy of its test.Control circuit also is provided with the overcurrent protection module of monitoring for to the testing process electric current, in the process that detects, the electric current of the signal that detects is monitored; when electric current is excessive; carry out overcurrent protection, guarantee the security of equipment, improve its serviceable life.
As shown in Figure 1, sniffer comprises probe 1, probe 2 and connector 3, and probe 1 one ends are connected with probe 2, and the other end of probe 2 is connected with connector 3, does not need complicated annexation, and sniffer is simple in structure.Control circuit 8 is arranged in housing, and cable 7 is arranged in probe 2, and control circuit 8 is electrically connected to cable 7.Housing comprises bonnet 5 and main body 4, main body 4 is connected with connector 3 by set bolt 6, bonnet 5 is fixed on an end of main body 4, main body 4 and bonnet 5 are made by the metal material of corrosion-resistant, high temperature resistant and anti-various rugged surroundings, degree of protection is high, can reach the degree of protection of IP67, satisfy the work requirements of the industry spot of various rugged surroundings.Probe 2 is the wirerope type, adopts stainless steel, and the rear end is stepped, facilitates the client to install and use, and the client can directly install or install supporting flange, mold insert on batch can be measured after, only needs to take spanner to block the rear end and just can load and unload very easily.
as shown in Figure 2, the schematic diagram of control circuit, principle of work: by the toggle switch operation control circuit, the MCU microprocessor sends work order, through after signal processing circuit, send probe 2 to by cable 7, low-energy electromagnetic wave of high frequency of probe 2 emissions, electromagnetic wave conducts along probe 1, be reflected back after running into medium, transmitted wave and reflection wave produce a time phase difference, reflection wave reflexes to probe 1, be transmitted to again signal processing circuit, signal processing circuit is converted to the manageable thing of MCU microprocessor position signal with the time signal that receives, and sending the MCU microprocessor to processes, the signal of result is by output module output detections result, whole control circuit communicates by HART communication protocol, show simultaneously the indicator signal of MCU microprocessor by pilot lamp.
All the other are identical with embodiment 1, and difference is, popping one's head in is thimble tube, according to the needs of Different field environment, multiple fit system is arranged, and can also be Teflon type or single rod type.
Adopt the beneficial effect of the technical program to be: by at control circuit setup times calibration module, conveniently to guarantee the accuracy of time in the measurement line time verification of advancing, improve measuring accuracy.
By at control circuit, overcurrent protection module being set, electric current in testing process is monitored, guarantee that product uses safety, thereby guarantee the serviceable life of product.
Simultaneously equipment is easy for installation, simple in structure, only need be directly installed on the pipeline of required test liquid to measure, and satisfies different use occasions.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. high-frequency electromagnetic level-sensing device, it is characterized in that, comprise sniffer, housing and control circuit, described control circuit comprises be used to the MCU microprocessor of controlling whole control circuit, the signal processing circuit of MCU microprocessor will be offered after the detectable signal conversion, for the HART communication protocol circuit of described control circuit communication protocol, provide the power module of electric energy for each several part, the output module of output MCU microprocessor testing result; Described control circuit is provided with module time calibration of using the line time calibration of advancing for equipment.
2. high-frequency electromagnetic level-sensing device according to claim 1, it is characterized in that, described sniffer comprises probe, probe and connector, described probe is connected to an end of described probe, described connector is connected to the other end of described probe, described housing comprises main body and bonnet, described bonnet is fixed on an end of described main body, the other end of described main body is fixedly connected with described connector, described control circuit is arranged in described housing, and the cable in described control circuit and described probe is electrically connected to.
3. high-frequency electromagnetic level-sensing device according to claim 1 and 2, is characterized in that, described control circuit is provided with the overcurrent protection module of monitoring for to the testing process electric current.
4. high-frequency electromagnetic level-sensing device according to claim 1 and 2, is characterized in that, described housing is provided with the pilot lamp that shows described MCU microprocessor indicator signal and the toggle switch that operates described MCU microprocessor.
5. high-frequency electromagnetic level-sensing device according to claim 1 and 2, is characterized in that, also is provided with on described housing for the input terminal and the lead-out terminal that connect external unit.
6. high-frequency electromagnetic level-sensing device according to claim 2, is characterized in that, described probe is Teflon type, thimble tube, wirerope type or single rod type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103905558A CN103134567A (en) | 2011-12-01 | 2011-12-01 | High frequency electromagnetic level indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103905558A CN103134567A (en) | 2011-12-01 | 2011-12-01 | High frequency electromagnetic level indicator |
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| Publication Number | Publication Date |
|---|---|
| CN103134567A true CN103134567A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103905558A Pending CN103134567A (en) | 2011-12-01 | 2011-12-01 | High frequency electromagnetic level indicator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6581460B1 (en) * | 2002-01-28 | 2003-06-24 | Vega Grieshaber Kg | Method and device for direct digitizing microwave signals |
| US20050264440A1 (en) * | 2004-05-25 | 2005-12-01 | Rosemount Inc. | Test apparatus for a waveguide sensing level in a container |
| CN201285328Y (en) * | 2008-09-16 | 2009-08-05 | 伊玛精密电子（苏州）有限公司 | Sensor probe apparatus |
| CN201514255U (en) * | 2009-09-23 | 2010-06-23 | 伊玛精密电子（苏州）有限公司 | Strong oscillation intelligent fork material level meter |
-
2011
- 2011-12-01 CN CN2011103905558A patent/CN103134567A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6581460B1 (en) * | 2002-01-28 | 2003-06-24 | Vega Grieshaber Kg | Method and device for direct digitizing microwave signals |
| US20050264440A1 (en) * | 2004-05-25 | 2005-12-01 | Rosemount Inc. | Test apparatus for a waveguide sensing level in a container |
| CN201285328Y (en) * | 2008-09-16 | 2009-08-05 | 伊玛精密电子（苏州）有限公司 | Sensor probe apparatus |
| CN201514255U (en) * | 2009-09-23 | 2010-06-23 | 伊玛精密电子（苏州）有限公司 | Strong oscillation intelligent fork material level meter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Suzhou Liewei Electrical Appliance Equipment Co., Ltd. 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 |
Application publication date: 20130605 |