CN105222842A - Transmitter and sensor signal is become to the method sent in this transmitter - Google Patents
Transmitter and sensor signal is become to the method sent in this transmitter Download PDFInfo
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- CN105222842A CN105222842A CN201410239092.9A CN201410239092A CN105222842A CN 105222842 A CN105222842 A CN 105222842A CN 201410239092 A CN201410239092 A CN 201410239092A CN 105222842 A CN105222842 A CN 105222842A
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- transmitter
- detection circuit
- tube self
- sensor tube
- sensor
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Abstract
The invention provides a kind of transmitter for coriolis flowmeter and sensor signal become to the method sent in this transmitter.This transmitter comprises: sample circuit, for sampling to the sensor signal obtained by sensor sense vibrations flowtube.Wherein, transmitter also comprises: dismountable sensor tube self-detection circuit, when sensor tube self-detection circuit to be installed on transmitter and electrically to be accessed transmitter, sensor tube self-detection circuit determines whether there is failure condition in vibrating flow pipe based on sensor signal.
Description
Technical field
The present invention relates to a kind of transmitter for coriolis flowmeter and sensor signal become to the method sent in this transmitter.
Background technology
Transmitter for coriolis flowmeter is that the sensor signal obtained by sensor sense vibrations flowtube changed into can by the converter of the signal of controller identification.In the process that transmitter processes sensor signal, sometimes need to detect vibrating flow pipe, determine in vibrating flow pipe, whether there is failure condition (the such as tube wall of vibrating flow blockage, vibrating flow pipe has breakage etc.), thus guarantee the correctness of sensor signal.Circuit for detecting vibrating flow pipe is called as sensor tube self-detection circuit.But the detection for vibrating flow pipe not always needs, such as, when just having changed new vibrating flow pipe, this kind can not be carried out and detect, and after vibrating flow pipe is employed a period of time, may need to carry out this kind and detect.
But, in existing transmitter, sensor tube self-detection circuit is fixedly mounted on transmitter usually, and this causes the detection that whenever all will perform vibrating flow pipe, thus user can not select flexibly, and unnecessary energy resource consumption may be caused.
Summary of the invention
Consider the problems referred to above, the object of this invention is to provide a kind of transmitter for coriolis flowmeter and sensor signal become to the method sent in this transmitter.Thus whether user can select to detect vibrating flow pipe flexibly.
One aspect of the present invention provides a kind of transmitter for coriolis flowmeter, and this transmitter comprises sample circuit, and this sample circuit is sampled to the sensor signal obtained by sensor sense vibrations flowtube.Wherein, transmitter also comprises: dismountable sensor tube self-detection circuit, when this sensor tube self-detection circuit to be installed on this transmitter and electrically to be accessed this transmitter, this sensor tube self-detection circuit determines whether there is failure condition in vibrating flow pipe based on sensor signal.
According to an embodiment, transmitter also comprises place in circuit, and place in circuit is used for this sensor tube self-detection circuit electrically to access transmitter, wherein, place in circuit comprises: install detecting unit, whether be installed to transmitter for detecting sensor pipe self-detection circuit; And access unit, for when installing detecting unit and detecting that sensor tube self-detection circuit is installed on transmitter, sensor tube self-detection circuit is electrically accessed transmitter.
According to another embodiment, transmitter also comprises hand switch, and sensor tube self-detection circuit, after being installed on transmitter at sensor tube self-detection circuit, is manually electrically accessed transmitter by this hand switch.
According to another embodiment, sensor tube self-detection circuit comprises: sensor signal detection unit, for sensing sensor signal, and determines whether there is failure condition in vibrating flow pipe based on sensor signal; Signal transmission unit, for i) determining to send sensor signal to sample circuit when there is not failure condition in vibrating flow pipe at sensor signal detection unit, and ii) stop when sensor signal detection unit determines to there is failure condition in vibrating flow pipe transmitting sensor signal; And alarm unit, send alerting signal for determining at sensor signal detection unit when there is failure condition in vibrating flow pipe.
According to another embodiment, sensor is embedded in transmitter.
According to another embodiment, sensor is separated with transmitter.
According to another embodiment, sensor tube self-detection circuit is modularized circuit.
Another aspect of the present invention provides a kind of and become to sensor signal the method sent in for the transmitter of coriolis flowmeter, wherein, transmitter comprises dismountable sensor tube self-detection circuit, and method comprises step: sample to this sensor signal obtained by sensor sense vibrations flowtube.Wherein, when sensor tube self-detection circuit to be installed on transmitter and electrically to be accessed transmitter, step is below performed: sensor tube self-detection circuit determines whether there is failure condition in vibrating flow pipe based on sensor signal.
Application the present invention, because sensor tube self-detection circuit is wherein detachable, therefore user can come to select flexibly whether to carry out the detection to vibrating flow pipe as required.
Accompanying drawing explanation
With reference to below in conjunction with the explanation of accompanying drawing to embodiments of the invention, above and other objects, features and advantages of the present invention can be understood more easily.In the accompanying drawings, the identical or corresponding Reference numeral of employing represents by the technical characteristic of identical or correspondence or parts.Size and the relative position of unit need not be gone out in the accompanying drawings according to scale.
Fig. 1 is the block diagram of the structure of the transmitter for coriolis flowmeter schematically shown according to the embodiment of the present invention.
Fig. 2 schematically shows according to another embodiment of the present invention for the block diagram of the structure of the transmitter of coriolis flowmeter.
Fig. 3 is the schematic diagram of the concrete structure of the place in circuit illustrated according to the embodiment of the present invention.
Fig. 4 is the block diagram of the structure of an example of the sensor tube self-detection circuit illustrated according to the embodiment of the present invention.
Fig. 5 is the block diagram of the structure of a concrete example of the transmitter illustrated according to the embodiment of the present invention.
Fig. 6 schematically shows schematic flow sheet sensor signal being become to the method sent according to an embodiment of the invention in transmitter.
Embodiment
With reference to the accompanying drawings embodiments of the invention are described.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts well known by persons skilled in the art and process in illustrating.
Fig. 1 is the block diagram of the structure of the transmitter 100 for coriolis flowmeter schematically shown according to the embodiment of the present invention.Below transmitter 100 is described in detail.
As shown in fig. 1, transmitter 100 comprises sample circuit 101.Sample circuit 101 is for sampling to the sensor signal obtained by sensor sense vibrations flowtube, to obtain sampled signal.Sensor can be the liquid flow sensor etc. of the sensor of any type, such as sensed flow.Although not shown, transmitter 100 can also comprise treatment circuit, output circuit etc.Treatment circuit can process to obtain output signal to the sampled signal obtained of being sampled by sample circuit 101.Output signal is the signal of the standard reached required by follow-up controller or measurement instrument, namely reaches the signal of the requirement of controller or measurement instrument.Output circuit can will export to follow-up controller or measurement instrument.In an embodiment of the present invention, transmitter 100 is equipped with sample circuit 101 (connecting with solid line in FIG), treatment circuit, output circuit etc. regularly.
Different from sample circuit 101, treatment circuit, output circuit etc., sensor tube self-detection circuit 102 is dismountable (represented by dashed line in FIG sensor tube self-detection circuit 102 is installed to transmitter 100) for transmitter 100.When sensor tube self-detection circuit 102 to be installed on transmitter 100 and electrically to be accessed transmitter, sensor tube self-detection circuit 102 determines whether there is failure condition in described vibrating flow pipe based on described sensor signal.Because sensor tube self-detection circuit 102 is dismountable, therefore user can select neatly for whether detecting vibrating flow pipe.When just having changed new vibrating flow pipe, user can select not detect vibrating flow pipe, so sensor tube self-detection circuit 102 can not be installed on transmitter 100.And after vibrating flow pipe is employed a period of time, user needs detection whether to there is failure condition in vibrating flow pipe, sensor tube self-detection circuit 102 can be installed on transmitter 100 by user, and sensor tube self-detection circuit 102 is electrically linked in transmitter 100, with by detecting whether there is failure condition in vibrating flow pipe to sensor signal.
Fig. 2 illustrates according to another embodiment of the present invention for the block diagram of the structure of the transmitter 200 of coriolis flowmeter.As shown in Figure 2, except sample circuit 101 and sensor tube self-detection circuit 102, transmitter 200 also comprises place in circuit 103.Place in circuit 103 is for electrically accessing transmitter by sensor tube self-detection circuit 102.After sensor tube self-detection circuit 102 is mounted or is assembled on transmitter 200, sensor tube self-detection circuit 102 is electrically linked in transmitter 200 by place in circuit 103, carries out work to make sensor tube self-detection circuit 102 together with other interlock circuit in transmitter 200.
Fig. 3 is the schematic diagram of the concrete structure that place in circuit 103 is shown.Place in circuit 103 can comprise installs detecting unit 1031 and access unit 1032.Whether installation detecting unit 1031 may be used for detecting sensor pipe self-detection circuit 102 and is installed on transmitter 200.Access unit 1032 may be used for when installing detecting unit 1031 and detecting that sensor tube self-detection circuit 102 is installed on transmitter 200, sensor tube self-detection circuit 102 is linked in transmitter 200, electrically be linked in transmitter 200 by sensor tube self-detection circuit 102, carry out work to make sensor tube self-detection circuit 102 together with other interlock circuit in transmitter 200.By the place in circuit 103 of Fig. 3, can realize for the whether mounted automatic detection of sensor tube self-detection circuit 102, and automatically it can electrically be accessed transmitter 200.
Certainly, the transmitter 100 shown in Fig. 1 can also comprise hand switch.Hand switch may be used for, after sensor tube self-detection circuit 102 is installed on transmitter 100, manually sensor tube self-detection circuit 102 electrically being accessed transmitter 100
Fig. 4 is the block diagram of the structure of an example of the sensor tube self-detection circuit 102 illustrated according to the embodiment of the present invention.As shown in Figure 4, sensor tube self-detection circuit 102 comprises sensor signal detection unit 1021, signal transmission unit 1022 and alarm unit 1023.Below each unit is described in detail.
Sensor signal detection unit 1021 for detecting the sensor signal obtained by sensor sensing, and determines whether there is failure condition in vibrating flow pipe based on sensor signal.Particularly, when vibrating flow pipe does not exist failure condition, the electric current of sensor signal is stable.And when vibrating flow pipe is damaged or when being plugged, the electric current of sensor can change.Therefore, sensor signal detection unit 1021, by detecting the electric current of sensor signal, can determine whether sensor signal exists failure condition.
Signal transmission unit 1022 is for i) determining to send sensor signal to sample circuit 101 when there is not failure condition in vibrating flow pipe at sensor signal detection unit 1021, and ii) stop when sensor signal detection unit 1021 determines to there is failure condition in vibrating flow pipe transmitting sensor signal.Particularly, when sensor signal is more stable and without exception, illustrate to there is not failure condition in vibrating flow pipe, therefore the sensor signal of sensor sensing is correct.In this case, signal transmission unit 1022 in statu quo sends sensor signal to sample circuit.And when sensor signal is abnormal, illustrate may there is failure condition in vibrating flow pipe, therefore the sensor signal of sensor sensing also may be incorrect.In this case, signal transmission unit 1022 stops transmitting sensor signal, thus the signal of mistake can be prevented to transmit.
Alarm unit 1023 sends alerting signal for determining at sensor signal detection unit 1021 when there is failure condition in vibrating flow pipe.Particularly, when sensor signal detection unit 1021 detects that sensor signal is abnormal, it is abnormal that alarm unit 1023 carries out reporting to the police to inform the user sensor signal, after user receives this notice, can take appropriate measures, such as, vibrating flow pipe placed under repair or change vibrating flow pipe etc.Existing any type of alarm can be taked to report to the police, and such as, color by making LED light show changes, by changing the number etc. of the LED light lighted.
In the embodiment above, sensor can be separated with transmitter, thus sensor and transmitter form two independently devices.Certainly, sensor also can be embedded in transmitter, thus sensor and transmitter form integrated apparatus.
In addition, in the embodiment above, sensor tube self-detection circuit can be modularized circuit.
A concrete example of transmitter is described below.Fig. 5 is the block diagram of the structure of a concrete example of the transmitter 500 illustrated according to the embodiment of the present invention.As shown in Figure 5, in this example, sensor is embedded in transmitter, thus forms the transmitter device of integration.Below this example is specifically described.
Interlock circuit (such as sensor 506 and sensor tube self-detection circuit 504) in driving circuit 507 pairs of transmitters drives.Left and right two vibrating flow pipes of sensor 506 export the sensor signal LPOOUT and the RPOOUT that are sensed acquisition by sensor 506 respectively.Sample circuit 501 couples of sensor signal LPOOUT and RPOOUT sample, thus obtain sampled signal.Sample circuit 501 can be specifically signal codec device AK4552.Treatment circuit is realized by CPU (CPU (central processing unit)) 502 chip, and the model of CPU502 chip can be the BF533 of AnalogDevice company, can certainly use CPU or DSP of other model.CPU502 processes to obtain output signal to the sampled signal obtained of being sampled by sample circuit 501, and CPU502 can also control interlock circuits such as sample circuit 501, sensor tube self-detection circuit 504 and output circuits 503 in addition.Output circuit 503 will export to follow-up controller or measurement instrument.The place in circuit 505 realized with hand switch S1, S2 is shown in Figure 5 with dot-and-dash line.In transmitter 500, the mainboard (not shown) that sample circuit 501, CPU502, output circuit 503, place in circuit 505, sensor 506 and driving circuit 507 all can be fixedly fitted to transmitter is electrically connected mutually.A connector (not shown) can be reserved on the mainboard of transmitter and carry out assembly sensor pipe self-detection circuit 504.
In Figure 5, dismountable sensor tube self-detection circuit 504 is depicted with dotted line.After sensor tube self-detection circuit 505 is mounted on connector, user manually can operate manual switch S 1, sensor tube self-detection circuit 504 is electrically linked in transmitter 500 by S2.That is, user only needs the position manual switch S 1 and the S2 position from 2 and 4 being allocated to respectively 1 and 3, just sensor tube self-detection circuit 504 electrically can be linked in transmitter 500.And when there is no assembly sensor pipe self-detection circuit 504, make hand switch S1 and S2 be in the position of 2 and 4.
Connector reserved on mainboard can be the connector of 10 pins, and is electrically linked in transmitter 500 by sensor tube self-detection circuit 504, only needs 9 signal wires wherein to realize.This makes the assembling of sensor tube self-detection circuit and accesses very simple.
Fig. 6 schematically shows schematic flow sheet sensor signal being become in for the transmitter of coriolis flowmeter to the method sent according to an embodiment of the invention.This transmitter can be the transmitter described by each embodiment of the application.
The method comprising the steps of S602: the described sensor signal obtained by sensor sense vibrations flowtube is sampled, to obtain sampled signal.Wherein, when sensor tube self-detection circuit to be installed on transmitter and electrically to be accessed transmitter, perform step S605 below: sensor tube self-detection circuit determines whether there is failure condition in vibrating flow pipe based on sensor signal.
Determine whether sensor tube self-detection circuit is installed on transmitter and automatically can be completed by the circuit unit in transmitter by the step S601 electrically accessing transmitter.
In addition, when sensor tube self-detection circuit not to be installed on transmitter and electrically to access on transmitter, in step S602, sensor signal is sampled, to obtain sampled signal.In step S603, process to obtain output signal to sampled signal.And in step S604, the output signal of acquisition is exported.
Sensor tube self-detection circuit is electrically accessed transmitter can comprise the following steps: whether detecting sensor pipe self-detection circuit is installed on transmitter; And when detecting that sensor tube self-detection circuit is installed on transmitter, sensor tube self-detection circuit is electrically accessed transmitter.
Selectively, sensor tube self-detection circuit is electrically accessed transmitter can comprise the following steps: after sensor tube self-detection circuit is installed on transmitter, manually sensor tube self-detection circuit is electrically accessed transmitter switch manual.
Application becomes to sensor signal the method sent according to an embodiment of the invention in transmitter, and user can come to select flexibly whether to carry out the detection to vibrating flow pipe as required.
The present invention is described with reference to specific embodiment in instructions above.But those of ordinary skill in the art understands, do not departing under the prerequisite as the scope of the present invention of claims restriction and can carry out various amendment and change.
Claims (10)
1. the transmitter for coriolis flowmeter (100), described transmitter (100) comprises sample circuit (101), and described sample circuit (101) is sampled to the sensor signal obtained by sensor sense vibrations flowtube;
It is characterized in that, described transmitter (100) also comprises:
Dismountable sensor tube self-detection circuit (102), when described sensor tube self-detection circuit (102) be installed to described transmitter (100) upper and electrically accessed described transmitter (100), described sensor tube self-detection circuit (102) determines whether there is failure condition in described vibrating flow pipe based on described sensor signal.
2. transmitter according to claim 1 (100), also comprise place in circuit (103), place in circuit (103) is for electrically accessing described transmitter (100) by described sensor tube self-detection circuit (102), wherein, described place in circuit (103) comprising:
Detecting unit (1031) being installed, whether being installed to described transmitter (100) for detecting described sensor tube self-detection circuit (102); And
Access unit (1032), during for detecting that described installation detecting unit (1031) described sensor tube self-detection circuit (102) is installed on described transmitter (100), described sensor tube self-detection circuit (102) is electrically accessed described transmitter (100).
3. transmitter according to claim 1 (100), also comprise hand switch, described hand switch is used for, after described sensor tube self-detection circuit (102) is installed on described transmitter (100), manually described sensor tube self-detection circuit (102) electrically being accessed described transmitter (100).
4. the transmitter (100) according to any one in claim 1-3, wherein, described sensor tube self-detection circuit (102) comprising:
Sensor signal detection unit (1021), for sensing described sensor signal, and determines whether there is failure condition in described vibrating flow pipe based on described sensor signal;
Signal transmission unit (1022), for i) determining to send described sensor signal to described sample circuit (101) when there is not failure condition in described vibrating flow pipe described sensor signal detection unit (1021), and ii) stop when described sensor signal detection unit (1021) determines to there is failure condition in described vibrating flow pipe transmitting described sensor signal; And
Alarm unit (1023), for determining to send alerting signal when there is failure condition in described vibrating flow pipe described sensor signal detection unit (1021).
5. transmitter according to claim 1 (100), wherein, described sensor is embedded in described transmitter (100).
6. transmitter according to claim 1 (100), wherein, described sensor is separated with described transmitter (100).
7. transmitter according to claim 1 (100), wherein, described sensor tube self-detection circuit (102) is modularized circuit.
8. in for the transmitter of coriolis flowmeter, become the method sent to sensor signal, described transmitter comprises dismountable sensor tube self-detection circuit, and described method comprises step:
The described sensor signal obtained by sensor sense vibrations flowtube is sampled,
It is characterized in that, when described sensor tube self-detection circuit to be installed on described transmitter and electrically to be accessed described transmitter, perform step below:
Described sensor tube self-detection circuit determines whether there is failure condition in described vibrating flow pipe based on described sensor signal.
9. method according to claim 8, wherein, electrically accesses described transmitter by described sensor tube self-detection circuit and comprises the following steps:
Whether detect described sensor tube self-detection circuit is installed on described transmitter; And
When detecting that described sensor tube self-detection circuit is installed on described transmitter, described sensor tube self-detection circuit is electrically accessed described transmitter.
10. method according to claim 8, wherein, electrically accesses described transmitter by described sensor tube self-detection circuit and comprises the following steps:
After described sensor tube self-detection circuit is installed on described transmitter, manually described sensor tube self-detection circuit is electrically accessed described transmitter switch manual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239092.9A CN105222842A (en) | 2014-05-30 | 2014-05-30 | Transmitter and sensor signal is become to the method sent in this transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410239092.9A CN105222842A (en) | 2014-05-30 | 2014-05-30 | Transmitter and sensor signal is become to the method sent in this transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN105222842A true CN105222842A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410239092.9A Pending CN105222842A (en) | 2014-05-30 | 2014-05-30 | Transmitter and sensor signal is become to the method sent in this transmitter |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166199A (en) * | 1994-08-12 | 1997-11-26 | 微动公司 | Method and appts. for fault detection and correction in coriolis effect mass flowmeters |
| CN1685204A (en) * | 2002-09-30 | 2005-10-19 | 微动公司 | Programmable coriolis flow meter electronics for outputting information over a single output port |
| JP2013160716A (en) * | 2012-02-08 | 2013-08-19 | Yokogawa Electric Corp | Flow meter and method for diagnosing flow meter |
| CN203929146U (en) * | 2014-05-30 | 2014-11-05 | 微动公司 | Transmitter |
-
2014
- 2014-05-30 CN CN201410239092.9A patent/CN105222842A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166199A (en) * | 1994-08-12 | 1997-11-26 | 微动公司 | Method and appts. for fault detection and correction in coriolis effect mass flowmeters |
| CN1685204A (en) * | 2002-09-30 | 2005-10-19 | 微动公司 | Programmable coriolis flow meter electronics for outputting information over a single output port |
| JP2013160716A (en) * | 2012-02-08 | 2013-08-19 | Yokogawa Electric Corp | Flow meter and method for diagnosing flow meter |
| CN203929146U (en) * | 2014-05-30 | 2014-11-05 | 微动公司 | Transmitter |
Non-Patent Citations (3)
| Title |
|---|
| 刘国光: "自诊断技术在智能化仪表中的应用", 《自动化与仪器仪表》 * |
| 沈英才 等: "智能化仪表的几种程序自检方法", 《河北工业科技》 * |
| 高志强 等: "罗斯蒙特质量流量计测量原理及应用", 《传感器世界》 * |
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Application publication date: 20160106 |
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