CN2700839Y - Transducer - Google Patents
Transducer Download PDFInfo
- Publication number
- CN2700839Y CN2700839Y CN 03226193 CN03226193U CN2700839Y CN 2700839 Y CN2700839 Y CN 2700839Y CN 03226193 CN03226193 CN 03226193 CN 03226193 U CN03226193 U CN 03226193U CN 2700839 Y CN2700839 Y CN 2700839Y
- Authority
- CN
- China
- Prior art keywords
- heart yearn
- transducer
- magnetic field
- conductor
- plastic cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Magnetic Variables (AREA)
Abstract
The utility model discloses a transducer, comprising a coil which is used to wind the core thread winding body of the winding. The core thread winding body is a cylinder, an axial direction cylinder hole is arranged inside the cylinder, and a conductor is arranged inside the axial direction cylinder hole, the conductor is a bistable alloy. The transducer is working without power supply, and the transducer is suitable for the occasion of low power consumption. The transducer has no mechanical contact, high reliability, anti-knock, long life, and wide temperature interval. The variation of the frequency range of the environment magnetic field which is counted is wide, the output signal of the device is constant, as long as the strength of the magnetic field exceeds the values of the trigger domain, and then the pulse signal is output by the device. So, the output signal of the device has no relationship with the variation speed of the magnetic field, and the device is very suitable for counting for low rotate speed. The N pole and the S pole of the magnetic field, which acts on the transducer are respectively cause the device generates the positive and the negative pulse signal. So, the rotary direction of the revolving solid can be distinguished by the device when the two devices are used for a revolving solid at the same time.
Description
Technical field
The utility model relates to a kind of sensor, is the improvement technology of sensor specifically.
Background technology
At present, people use sensor to count in many instances, and in products such as water meter, gas meter, calorimeter, anemoscope, these sensors mostly are tongue tube or Hall element.The problem that tongue tube exists as sensor: power consumption is uncertain, and is relevant with each circuit; Unfailing performance is low; The low-and high-frequency performance is bad.Hall element is that unfailing performance is good, low-and high-frequency performance height as the advantage that sensor exists, but power consumption is the mA level.People press for the sensor of developing a kind of zero-power, high reliability, being suitable for wide frequency range.
" physics " magazine (Science Press that sponsors in Chinese Physical Society, ISSN 0379-4148) the 8th part has been introduced a kind of " Weigand magnetosensitive device " in " magnetic sensitive technology physics and application special topic series (IV) magneto-dependent sensor and application thereof " literary composition of the 7th phase the 19th of nineteen ninety volume, and Weigand magnetosensitive device described here is a kind of passive switch type Magnetic Sensor of being made sensitive element by permalloy silk and Vicalloy silk.This alloy silk will become the alloy silk of the internal layer double magnetization characteristic different with outer coercive force through after surperficial special processing and handling.This alloy silk is placed alternating magnetic fields, if alloy silk outside around one group of inductive coil, then when the magnetized state of alloy silk is undergone mutation, coil will induce pulse voltage.When such sensor is used for intellectual water meter, can one magnet ring be installed in the roller end of water meter turbine, this magnet ring is divided into two different parts of polarity; The sensor is placed the top of this magnet ring, when magnet ring rotates with impeller, the magnetized state of sensor alloy silk is undergone mutation like this, alloy silk outside around coil-inducedly go out pulse voltage, and be delivered to control section.So just the number of turns (discharge) of impeller rotation is transformed into level output, thereby realizes the Intelligent Measurement of water meter.
Summary of the invention
The purpose of this utility model provides a kind of zero-power, high reliability, is suitable for the sensor of wide frequency range.
The utility model is achieved through the following technical solutions the object of the invention.
A kind of sensor comprises coil, and the heart yearn that is used for winding around is characterized in that around body: described heart yearn is a cylinder around body, is provided with the axial columns hole in the cylinder, and axial columns is provided with conductor in the hole.
Be provided with the heart yearn sleeve between described axial columns hole and the conductor.
Described heart yearn is provided with magnet ring around the two ends of body, the magnet ring ring set at heart yearn on body.
Described heart yearn is provided with magnet ring and plastic cement plate washer around the two ends of body, the plastic cement plate washer is stepped, and the magnet ring ring set is on the plastic cement plate washer; One plastic cement plate washer ring set is at an end of heart yearn sleeve, and another plastic cement plate washer is provided with counterbore, and the other end of heart yearn sleeve is positioned at this counterbore.
Described heart yearn is right cylinder around body and conductor.
Described conductor is a bi-stable alloy.
The utility model compared with prior art has the following advantages:
Do not need power supply during working sensor, be suitable for the occasion of super low-power consumption; There are not mechanical contact, reliability height, antidetonation, long-life, serviceability temperature wide ranges; The external magnetic field change frequency wide ranges that is counted, the device output signal is constant, as long as magnetic field intensity surpass to trigger thresholding, device will output pulse signal, so the speed of the output signal of device and changes of magnetic field has nothing to do, is very suitable for very slow-revving counting; The N level and the S level that act on magnetic field on the sensor make device produce positive and negative pulse signal respectively, so when two devices are used for a rotary body simultaneously, can differentiate the direction of rotation.
Description of drawings
Fig. 1 is the assembly structure cut-open view of the utility model sensor;
Fig. 2 is the utility model sensor conductor and the decomposition texture synoptic diagram of heart yearn between body.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As Fig. 1 and shown in Figure 2, the heart yearn of sensor is an elongated cylinder around body 1, and coil encircling is at the circumference of heart yearn around body 1.Heart yearn is provided with magnet ring 2, plastic cement plate washer 3 and pad 6 respectively successively around the two ends of body 1, plastic cement plate washer 3 is stepped right cylinder, magnet ring 2 is the circular cylinder of hollow, pad 6 is the end cap of interior tape spool heart circular hole, magnet ring 2 ring sets are on the small cylinder of plastic cement plate washer 3, and pad 6 ring sets are on the large cylinder of plastic cement plate washer 3.The lead-in wire of end turn passes magnet ring 2, plastic cement plate washer 3 links to each other with the pad 6 at two ends, and the excircle of coil and magnet ring 2 also coats one deck thermoplastic tube 7, the thermoplastic tube 7 main defencive functions that rise.Heart yearn has the slotted hole of concentric around the body 1 and the center of two ends plastic cement plate washer 3, wherein, the axle center hole of a plastic cement plate washer is a through hole, and the axle center hole of another plastic cement plate washer is a counterbore.Be with a heart yearn sleeve 4 in the axle center hole of heart yearn in body 1 and two ends plastic cement plate washer 3, be provided with a cylindrical conductor 5 in the heart yearn sleeve 4, the material of conductor 5 is a bi-stable alloy.
Bi-stable alloy conductor in the utility model sensor is through after surperficial special processing and handling, and it has the internal layer double magnetization characteristic different with outer coercive force, and the coercive force of its surperficial one deck is bigger one more than the order of magnitude than internal layer coercive force.Therefore, under the effect of outer remanent magnetism, the internal layer soft magnetic material is towards the orientation magnetization of outer remanent magnetism at internal layer, and we are called a state to it.If in the magnetized opposite direction that internal layer produces, add a magnetic field facing to outer remanent magnetism, then when magnetic field was added to a certain degree, because the effect of externally-applied magnetic field, the internal layer direction of magnetization is counter-rotating suddenly again, is in the b state, and at this moment inductive coil induces electric pulse again.When external magnetic field removed, because the action of a magnetic field that outer remanent magnetism produces at internal layer, the counter-rotating of internal layer direction of magnetization returned to a state, and inductive coil induces pulse voltage simultaneously.Therefore, this bi-stable alloy conductor magnetosensitive device does not need to add external power, and voltage pulse output and driving are irrelevant substantially with the external magnetic field pace of change, and relevant with internal layer magnetization reversal speed.
This bi-stable alloy conductor magnetosensitive device serviceability temperature scope is very big, and signal to noise ratio (S/N ratio) is also very high.This device is the switching mode Magnetic Sensor, can be used in the products such as water meter, gas meter, calorimeter, anemoscope.
When sensor of the present utility model is used for intellectual water meter, can one magnet ring be installed in the roller end of water meter turbine, this magnet ring is divided into two different parts of polarity; Sensor is placed the top of this magnet ring, when magnet ring rotates with impeller, the magnetized state of sensor alloy silk is undergone mutation like this, alloy silk outside around coil-inducedly go out pulse voltage, and be delivered to control section.So just the number of turns (discharge) of impeller rotation is transformed into level output, thereby realizes the Intelligent Measurement of water meter.
Except Fig. 1 and structure shown in Figure 2, the utility model sensor can also have other constructional variant, and does not break away from protection domain of the present utility model.For example, on body 1, the end of magnet ring 2 is set to pad 6 to magnet ring 2 direct ring sets at heart yearn; Heart yearn is square cylinder or other cylindrical body around body 1 with magnet ring 2, two ends plastic cement plate washer 3; The material of conductor 5 is except being can also be other materials the bi-stable alloy.
Claims (6)
1. a sensor comprises coil, and the heart yearn that is used for winding around is characterized in that around body: described heart yearn is a cylinder around body, is provided with the axial columns hole in the cylinder, and axial columns is provided with conductor in the hole.
2. sensor according to claim 1 is characterized in that: be provided with the heart yearn sleeve between described axial columns hole and the conductor.
3. sensor according to claim 2 is characterized in that: described heart yearn is provided with magnet ring around the two ends of body, the magnet ring ring set at heart yearn on body.
4. sensor according to claim 2 is characterized in that: described heart yearn is provided with magnet ring and plastic cement plate washer around the two ends of body, the plastic cement plate washer is stepped, and the magnet ring ring set is on the plastic cement plate washer; One plastic cement plate washer ring set is at an end of heart yearn sleeve, and another plastic cement plate washer is provided with counterbore, and the other end of heart yearn sleeve is positioned at this counterbore.
5. according to claim 1 or 2 or 3 or 4 described sensors, it is characterized in that: described heart yearn is right cylinder around body and conductor.
6. sensor according to claim 5 is characterized in that: described conductor is a bi-stable alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226193 CN2700839Y (en) | 2003-05-13 | 2003-05-13 | Transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226193 CN2700839Y (en) | 2003-05-13 | 2003-05-13 | Transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700839Y true CN2700839Y (en) | 2005-05-18 |
Family
ID=34755136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03226193 Expired - Fee Related CN2700839Y (en) | 2003-05-13 | 2003-05-13 | Transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2700839Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306329A (en) * | 2011-05-27 | 2012-01-04 | 南京艾驰电子科技有限公司 | Passive sensor and sensing method thereof |
-
2003
- 2003-05-13 CN CN 03226193 patent/CN2700839Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306329A (en) * | 2011-05-27 | 2012-01-04 | 南京艾驰电子科技有限公司 | Passive sensor and sensing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |