CN206531514U - Resonant chord sensor in the demarcation of two core cables - Google Patents
Resonant chord sensor in the demarcation of two core cables Download PDFInfo
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- CN206531514U CN206531514U CN201720203736.8U CN201720203736U CN206531514U CN 206531514 U CN206531514 U CN 206531514U CN 201720203736 U CN201720203736 U CN 201720203736U CN 206531514 U CN206531514 U CN 206531514U
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Abstract
The utility model provides resonant chord sensor in a kind of demarcation of two cores cable.Set up storage part in the demarcation of two core cables in resonant chord sensor, the halfwave rectifier power supply circuit of storage part is powered connection memory cell, storage part tandem tap circuit constitutes storage part branch road；Unidirectional electron is switched and vibratory string sensor coil detecting means branch road in series, with storage part branch circuit parallel connection, be connected two cored wires draw cable, the data I/O lines of memory cell are in parallel with the electrode input end of halfwave rectifier power supply circuit, and connection is drawn on the cored wire as power data connection of cable.The technical program is being realized in sensor on the architecture basics of solidification storage features localization parameter and numbering, have with conventional two cored wire cable sensors consistent without two extraction cable structure, its circuit composition is simple, and reliably, stably, the optimization space of properties of product and cost is bigger for transmission performance.
Description
Technical field
The utility model is related to sensor, more particularly to the internal biography for needing to be equipped with functional circuit and data transmission lead-out wire
Sensor, such as vibrating wire sensor.
Background technology
Vibrating string type sensor because simple in construction, strong antijamming capability, working stability, it is reliable, be affected by temperature small, measured value can
Lean on, suitable for many technological merits such as long-term observation, be widely used, especially complete pressure, stress etc. in civil engineering monitoring
It is even more indispensable in terms of measurement.But because of product type difference, manufacturing process and architectural difference, cause each type vibration wire to sense
The parameter discrete of device is very big, therefore each vibrating string type sensor is provided with numbering and itself specific demarcation ginseng when dispatching from the factory
Number, frequency values and its calibrating parameters are only substituted into mathematical operation model and converted, can just obtain reflection accurate jointly
Magnitude of physical quantity.So the calibrating parameters of each vibrating string type sensor can not be substituted for each other, can not obscure.
This characteristic of vibrating wire sensor brings inconvenience, the volume of every vibrating wire sensor to actually detected operation
Number, be both the foundation that operating personnel search correspondence calibrating parameters, or in engineering in-site installation position mark, in whole item engineering
Need once occur obscuring, damage, lose in embedding tens, hundreds of, even more vibrating wire sensors, installation exercise,
To directly contribute can not obtain exact physical value by converting, and can not also determine measured value position, can only abandon, and waste
Amount is big.
In order to solve the above technical problems, technical staff using solidification in vibrating wire sensor calibrating parameters itself come on solving
State technical problem, such as patented technology CN1912856A.But incident technical problem is：Vibrating wire sensor inner function circuit
Increase, also make the extraction cable of sensor only with multi-core cable, and two cored wires cable the simplest can not be used, as above
State and the five cored wires extraction including signal acquisition line, ground wire, power line, clock line and data wire is just employed in patent public technology
Cable.
The technological means of calibrating parameters is deposited using storage inside circuit, no doubt can solve the problem that prospecting technique personnel searching is compiled
Number, search the technical problem of the trifling operation of correspondence calibrating parameters etc., actual popularization and application are not obtained but, entangling its reason mainly has
Two aspects：One is that circuit constitutes complicated, power consumption greatly, influence measurement；Two be that split conductor extraction cable not only changes cable and outer
Measuring apparatus connected mode is connect, connection difficulty is greatly increased, and multicore extraction cable makes every sensor cost and existing
Installation cost can all be increased considerably, and data transmission distance also can because of signal transmission reliability and bad stability by
To strong influence.
The content of the invention
Goal of the invention of the present utility model is to solidify calibrating parameters and numbering among its vibrating wire sensor, has simultaneously
There are two cored wires the simplest as conventional vibrating wire sensor to draw cable and the attachment structure with external measuring apparatus, lead to
The dual-use function that two cored wires complete sensing pick-up signal measurement and the reading transmission of this sensor characteristics calibrating parameters is crossed, so as to complete
One-to-one computing, the interior resonant chord sensor of two core cables demarcation for obtaining accurate conversion magnitude of physical quantity.
Resonant chord sensor technical scheme, its main technical content in the two core cables demarcation that the utility model is provided
It is：Set up storage part in a kind of interior resonant chord sensor of two core cables demarcation, sensor, the halfwave rectifier of storage part is powered electricity
Road powers connection memory cell, and storage part tandem tap circuit constitutes storage part branch road；Unidirectional electron is switched senses line with vibratory string
Detecting means branch road in series is enclosed, it is in parallel with storage part branch road opposite polarity, be connected two cored wires extraction cable, storage part branch road
On-off circuit is made up of the controlled triggers circuit for switching and being connected to halfwave rectifier power supply circuit feeder ear, the data of memory cell
I/O lines are in parallel with the electrode input end of halfwave rectifier power supply circuit, and connect extraction cable is used as the one of power data connection
On cored wire.
Resonant chord sensor technical scheme in two cores cable demarcation of the present utility model, is realizing that solidification is deposited in sensor
On the architecture basics for storing up features localization parameter and numbering, drawing for nothing two consistent with conventional two cored wire cable sensors is truly realized
Go out cable technical purpose, circuit composition is simple.The technical program does not associate, does not change sensor original structure, by former two cored wire
Cable completes to include sensing measurement and calibrating parameters read and write the difunctional of data communication, is independent of each other, does not also interfere with each other, with routine
There is vibrating wire sensor product identical to draw cable structure and Circumscribed structure, it may have believe with conventional vibrating wire sensor identical
Number transmission reliability and stability, transmission performance are constant, and the optimization space of properties of product and cost is bigger, it is easy to be widely popularized,
Using.
Brief description of the drawings
Fig. 1 is circuit composition frame chart of the present utility model.
Fig. 2 is a specific implementation circuit theory diagrams.
Fig. 3 and Fig. 4 are respectively the another two embodiments circuit theory diagrams of memory cell.
Fig. 5 and Fig. 6 are respectively the another two embodiments circuit theory diagrams of on-off circuit.
Embodiment
Resonant chord sensor in two cores cable demarcation of the present utility model, its sensor internal has additional storage part, deposited
The halfwave rectifier power supply circuit in storage portion is powered connection memory cell, together with vibratory string sensor coil L, only draws cable by two cored wires
Connect external measurement devices.Memory cell in this sensor is written into the features localization parameter and numbering of sensor coil, outside
Measuring apparatus measures vibratory string sensing pick-up signal by two cored wire cables one, and two read storage this sensor characteristics calibrating parameters, then
The physical quantitys such as corresponding pressure value KN, stress value MPa, shift value mm, strain u ε are obtained by mathematical conversion model calculation.
Resonant chord sensor in this two core cables demarcation, the setting of its storage part does not associate influence vibrating wire sensor body
XH original structure, namely modified sensor will be as good as sensor coil L setting structure with existing sensor construction and from now on, by
Vibratory string sensing sensor coil L sensings produce pick-up frequency signal, sensor coil L and unidirectional two pole that K1 is switched as unidirectional electron
Pipe D1 positive pole connection, detecting means branch road in series, unilateral diode D1 therein can also be by other one-way conduction ministrys of electronics industry
Part is substituted, such as switching diode, commutation diode, voltage-regulator diode, detector diode, transient diode.The half of storage part
Ripple commutation supply voltage circuit and on-off circuit K2 storage part branch roads in series, halfwave rectifier power supply circuit, which is powered, exports connection storage
Unit, front end is provided with the overvoltage crowbar BH being made up of voltage-regulator diode WD, the data I/O lines and halfwave rectifier of memory cell
The electrode input end of power supply circuit is parallel on the cored wire LineA for drawing cable.Detecting means branch road and storage part branch road polarity
Reverse parallel connection, as shown in Fig. 2 the positive terminal of the negative pole end of detecting means branch road and storage part branch road is connected in parallel to node Dot 1, is sensed
The negative pole end of portion branch road sensor coil L one end and storage part branch road is connected in parallel on node Dot3, node Dot1, Dot3 respectively as
Two cored wire LineA, LineB of cable are drawn, external measuring apparatus is connected.Two described cored wires are the LineA of cored wire one and cored wire
Two LineB, the LineA of cored wire one for being connected to node Dot 1 is power data connection, is connected to node Dot3 cored wire two
LineB is excitation measurement line.External measuring apparatus by the two cored wires switching method that each function is set as：The LineB of cored wire two connects
Ground, then the LineA of cored wire one undertake power data communication function；The LineA of cored wire one be grounded, then the LineB of cored wire two undertake excitation and
Pick-up signal measurement function.The data I/O lines of memory cell are connected in parallel on to supply with the electrode input end of halfwave rectifier power supply circuit
On the LineA of cored wire one of electric data communication line.
Described memory cell can have a variety of realize to constitute structure, such as using the eeprom memory of one-line bus, such as
Shown in Fig. 3, or memory cell uses the embedded microcontroller with erasable flash and EEPROM, as shown in Fig. 2 or adopting
With external storage chip MC single-chip microprocessor MCU system shown in Fig. 1, Fig. 4 etc..
Halfwave rectifier power supply circuit can have multiple choices structure type, and what it is in the present embodiment selection is by commutation diode D2
The custom circuit constituted with charging capacitor C.
Described on-off circuit K2 is by the controlled triggers circuit structure for switching and being connected to halfwave rectifier power supply circuit feeder ear
Into.As shown in Fig. 2 one example structure is made up of the control pole triggers circuit of controllable silicon SCR and controllable silicon SCR, two poles
Pipe D3 is in parallel with controllable silicon SCR opposite polarity, and diode D3 polarity is in the same direction with halfwave rectifier power supply circuit, the control of controllable silicon SCR
Pole triggers circuit processed is is connected between halfwave rectifier power supply circuit feeder ear and ground wire and polarity and halfwave rectifier power supply circuit are same
To resistor voltage divider circuit R1, R2 of unilateral diode D4 connections constitute, electric resistance partial pressure node Dot5 is connected to controllable silicon SCR control
Pole processed.Described controllable silicon SCR can also be substituted by bidirectional triode thyristor, as shown in Figure 5.Described on-off circuit K2 another reality
A structure is applied, as shown in fig. 6, being made up of relay J, relay coil is connected to halfwave rectifier power supply circuit feeder ear and ground wire
Between, relay switch Kj is series between cored wire LineB and the ground wire Vss of halfwave rectifier power supply circuit.
Its course of work is：
1st, measurement sensing pick-up signal：External measuring apparatus is by sensor measurement working method output regulation signal：Cored wire
One LineA is grounded, and is excitation measurement line by the LineB of cored wire two.Now, in unidirectional electron switch K1 conductings, storage part branch road
Halfwave rectifier power supply circuit and detecting means branch road opposite polarity, on-off circuit K2 end and make storage part branch road and detecting means branch road
Isolation；External measuring apparatus constitutes survey through the LineB of cored wire two as excitation measurement line by the detecting means branch road worked independently
The frequency change electric signals in loop, excitation and measurement vibrating wire sensor are measured, its operation principle and conventional vibrating wire sensor work are former
Reason is identical;
2nd, power data communication transmission：External measuring apparatus exports regulation signal by power data communication work：Cored wire two
LineB is grounded, and is power data connection by the LineA of cored wire one.Now, unidirectional electron switch K1 cut-offs, make detecting means branch road
Depart from work；Storage part branch road is opening state, external measuring apparatus by the LineA of cored wire one as power data connection and
The LineB of cored wire two and storage part branch road constitute power data order circuit, and the LineA of cored wire one is loaded onto halfwave rectifier and powered electricity
Road, connects the I/O buses of memory cell all the way, as data communication line, this biography stored up for writing, reading memory cell
Sensor calibrating parameters, the halfwave rectifier power supply circuit of connection is separately also supplied electricity to as external supply line, is a cable dual intensity.Work as core
The LineA of line one is in high level, commutation diode D2 and on-off circuit K2 diode D3 conductings, to halfwave rectifier power supply circuit
Charging capacitor C charges, and when the LineA of cored wire one is in low level, commutation diode D2 and on-off circuit K2 diode D3 cut-offs will
The power supply state of halfwave rectifier power supply circuit is isolated with the LineA of cored wire one as data communication state during data communication line,
Now powered by the charging capacitor C voltages stored for memory cell, while controllable silicon SCR is in treat by control pole trigger circuit triggers
Conducting state, when memory cell to external measuring apparatus output data LineA be in high level when, controllable silicon SCR conducting, maintain
The earth-return circuit of internal storage unit needs, external measuring apparatus data communication, reads the calibrating parameters of solidification in this sensor,
For obtaining the physical quantitys such as pressure value KN, stress value MPa, shift value mm, strain u ε by mathematical conversion model calculation.
Claims (5)
1. set up storage part in resonant chord sensor in a kind of two cores cable demarcation, sensor, it is characterised in that storage part
Halfwave rectifier power supply circuit is powered connection memory cell, and storage part tandem tap circuit (K2) constitutes storage part branch road；Unidirectional electricity
Sub switch (K1) and vibratory string sensor coil（L）Detecting means branch road in series, it is in parallel with storage part branch road opposite polarity, be connected two
Cored wire draws cable, and the on-off circuit (K2) of storage part branch road switchs and be connected to halfwave rectifier power supply circuit feeder ear by controlled
Triggers circuit constitute, the data I/O lines of memory cell are in parallel with the electrode input end of halfwave rectifier power supply circuit, connect extraction
On the cored wire as power data connection of cable.
2. resonant chord sensor in two cores cable demarcation according to claim 1, it is characterised in that on-off circuit (K2)
By controllable silicon（SCR）And controllable silicon（SCR）Control pole triggers circuit constitute, polarity and controllable silicon (SCR）The diode of reversal connection
（D3）With controllable silicon（SCR）Parallel connection, diode（D3）Polarity is in the same direction with halfwave rectifier power supply circuit, controllable silicon（SCR）Control
Pole triggers circuit is is connected between halfwave rectifier power supply circuit feeder ear and ground wire and polarity and halfwave rectifier power supply circuit are in the same direction
Unilateral diode（D4）The resistor voltage divider circuit of connection is constituted, and electric resistance partial pressure node is connected to controllable silicon（SCR）Control pole.
3. resonant chord sensor in two cores cable demarcation according to claim 2, it is characterised in that described controllable silicon
For bidirectional triode thyristor.
4. resonant chord sensor in two cores cable demarcation according to claim 1, it is characterised in that described switch electricity
Road (K2) is by relay（J）Constitute, relay coil is connected between halfwave rectifier power supply circuit feeder ear and ground wire, be controlled switch
For relay switch（KJ）Between the ground wire for being series at another cored wire and halfwave rectifier power supply circuit.
5. resonant chord sensor in the two core cables demarcation according to claim 1,2,3 or 4, it is characterised in that unidirectional electricity
Sub switch (K1) is switching diode, commutation diode, voltage-regulator diode, detector diode, Transient Suppression Diode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203736.8U CN206531514U (en) | 2017-03-03 | 2017-03-03 | Resonant chord sensor in the demarcation of two core cables |
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| CN201720203736.8U CN206531514U (en) | 2017-03-03 | 2017-03-03 | Resonant chord sensor in the demarcation of two core cables |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534806A (en) * | 2017-03-03 | 2018-09-14 | 杨毅 | Resonant chord sensor and secondly core wire duplex switching method in the calibration of two core cables |
| CN110108315A (en) * | 2019-06-11 | 2019-08-09 | 杨毅 | Vibrating wire sensor calibrating parameters storage two core wire embedded structures of packet |
-
2017
- 2017-03-03 CN CN201720203736.8U patent/CN206531514U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534806A (en) * | 2017-03-03 | 2018-09-14 | 杨毅 | Resonant chord sensor and secondly core wire duplex switching method in the calibration of two core cables |
| CN108534806B (en) * | 2017-03-03 | 2024-02-20 | 杨毅 | Two-core system cable calibration inner Chu Zhenxian sensor and two-core wire duplex switching method thereof |
| CN110108315A (en) * | 2019-06-11 | 2019-08-09 | 杨毅 | Vibrating wire sensor calibrating parameters storage two core wire embedded structures of packet |
| CN110108315B (en) * | 2019-06-11 | 2024-02-20 | 杨毅 | Vibrating wire sensor calibration parameter storage core-spun yarn embedded structure |
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