CN204228176U - The potentiometer that a kind of magnetic coordinated type sensor and this sensor are formed - Google Patents
The potentiometer that a kind of magnetic coordinated type sensor and this sensor are formed Download PDFInfo
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- CN204228176U CN204228176U CN201420541608.0U CN201420541608U CN204228176U CN 204228176 U CN204228176 U CN 204228176U CN 201420541608 U CN201420541608 U CN 201420541608U CN 204228176 U CN204228176 U CN 204228176U
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- moving member
- separator
- magnetic
- coordinated type
- type sensor
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Abstract
The utility model discloses the potentiometer of a kind of magnetic coordinated type sensor and this sensor formation thereof, its key is: comprise separator and two moving members, in described two moving members, at least one is magnetic element, and two moving members are adsorbed in the plane of described separator both sides by magnetic force mutually, in described two moving members, the xsect of at least the first moving member is circular, when described second moving member moves along desired guiding trajectory in the side of described separator, described first moving member rolls along same trajectories by the opposite side of Magnetic force tracting at described separator, the separator of described first this side of moving member is also provided with the position detecting circuit for detecting described first moving member.Its remarkable result is: structure is simple, and debugging is convenient, and being quick on the draw of sensor, solves the hysteresis phenomenon caused by other sensing mode, and can accomplish good electrical isolation, realizes the popularization of various special applications scene.
Description
Technical field
The utility model relates to sensor technical field, specifically, is the potentiometer that a kind of magnetic coordinated type sensor and this sensor are formed.
Background technology
Sensor is a kind of pick-up unit, measured information can be experienced, and the information that can will experience, the information being for conversion into electric signal or other desired forms according to certain rules exports, to meet the requirements such as the transmission of information, process, storage, display, record and control.
Sensor in commercial Application is divided into isolated sensor and non-isolated sensor two kinds usually.Common potentiometer is exactly a kind of non-isolated sensor, and it is made up of resistive element and moveable brush or sliding system usually, when brush moves along resistive element, namely obtains the resistance value or voltage that become certain relation with displacement at output terminal.Namely when fixing an additional voltage between electric shock for two of resistive element, by rotating or the sliding system change position of contact on resistive element, between moving contact with fixed contact, just can obtain one becomes certain relation voltage with moving contact position, thus realize the conversion between displacement signal and electric signal.
And for isolated sensor, in prior art, people usually utilize the pulling figure of magnet to have devised multiple magnetic coordinated type sensor, a kind ofly magnetic pulling figure is utilized and the fuel level sensor designed as namely american documentation literature US2004/0221645A1 discloses, as can be seen from the disclosure document, the program make use of the magnetic coupling properties of the first magnet and the second magnet, the first magnet rotors is driven by float in the outside of seal casinghousing, affect the second magnet at seal casinghousing internal motion by the first magnet, second magnet is as the power source of seal casinghousing inside, potential change is realized by the second magnet drivening rod and contact element, thus reach the object of level sensing.
For prior art, although utilize magnetic interlock characteristic to achieve good electrical isolation, the second magnet of inside is as just a power point, and the syndeton of its complexity and contact element often increase the resistance of motion of magnet, usually there is hysteresis characteristic, the repeatable accuracy of sensor is poor.
Utility model content
For the deficiencies in the prior art, the first object of the present utility model is to provide a kind of magnetic coordinated type sensor, can realize electrical isolation, meets the application needs of special screne, can avoid again the hysteresis characteristic in Magnetic force tracting process, improves the performance of sensor.
In order to achieve the above object, the technical scheme that adopts of the utility model is as follows:
A kind of magnetic coordinated type sensor, its key is: comprise separator and two moving members, in described two moving members, at least one is magnetic element, and two moving members are adsorbed in the plane of described separator both sides by magnetic force mutually, in described two moving members, the xsect of at least the first moving member is circular, when described second moving member moves along desired guiding trajectory in the side of described separator, described first moving member rolls along same trajectories by the opposite side of Magnetic force tracting at described separator, the separator of described first this side of moving member is also provided with the position detecting circuit for detecting described first moving member.
Based on above-mentioned design, the electrical isolation of the first moving member and the second moving member can be realized by separator, under the traction of magnetic force, first moving member and the second moving member are the both sides oneself being adsorbed on separator, the position of inner first moving member of separator can react the outside second moving member position of separator well, the movement locus of the two is identical, and the first moving member adopts roll mode, react sensitiveer, solve the response lag problem that other kind of drive is brought, by the position of position detecting circuit direct-detection first moving member of inside, thus avoid complicated linkage structure and contact element, the conversion of displacement signal to electric signal can be realized fast.
As further describing, described first moving member and the second moving member are linear or arc at the movement locus of described separator both sides, set-up mode according to the second moving member can embody different movement locus, if the second moving member adopts the motion of lift, then movement locus is linear, if the second moving member is around an axis of rotation, then its movement locus is arc, can arrange different movement locus according to concrete application scenarios.
In order to the position better realizing the first moving member is detected, described position detecting circuit comprises the printed circuit unit be attached on described separator, this printed circuit unit is printed with electric quick material, this electric quick material is arranged along the movement locus of described first moving member, and shows different electric output characteristics with the diverse location that the first moving member stops.
When implementing, the quick print material of described electricity is on the body of separator or be printed in the printed circuit board that fits with described separator.
In conjunction with different embodiments, the quick material of described electricity is conductive strips, resistive band, para tape or appearance gate electrode sheet.The form of conductive strips or resistive band is wherein adopted to be common resistance type sensor, more easily realize, the surface of the first moving member is set to conductive material, when it rests on different positions, trigger conductive strips or the resistive band conducting at different length or diverse location place, thus show different resistance characteristics, realize the conversion that positional information ceases to telecommunications.If adopt para tape or hold gate electrode sheet, be then utilize capacitance characteristic to detect, when the first moving member rests on different positions, para tape or appearance gate electrode sheet show different capacitances.
In order to better enforcement, described position detecting circuit comprises the one section of arc conductive strips be attached on described separator many pectination buss equally distributed with relative described arc conductive strips, described first moving member moves along described arc conductive strips, and make at least one pectination bus and the conducting of described arc conductive strips, between adjacent two pectination buss, be electrically connected with a resistive element.
Resistance when further reduction first moving member rolls, described many pectination buss are not arranged along the arc radius direction of described arc conductive strips, an angle preset is there is between every bar pectination bus arc radius direction corresponding thereto, can ensure so at least to contact with two pectination buss in the first moving member rolling process, avoid being absorbed between adjacent two pectination buss and form rough movement locus, improve reaction velocity further.
In order to allow the first moving member possess better electric conductivity, when the quick material of described electricity be conductive strips or resistive band time, described first moving member is provided with conductive sleeve.
In order to better enforcement, described conductive sleeve adopts volute spring, and this volute spring is formed by conductive material coiling, and the coiling radius of at least one end is greater than the coiling radius of interlude, is embedded described first moving member in described volute spring.Like this, spring and the quick material of electricity can be utilized, reduce contact area, thus reduce frictional resistance, improve reaction velocity.
In conjunction with the needs of some special applications scene, described separator is the housing of a sealing, and described first moving member and position detecting circuit are arranged on enclosure interior, is at least provided with a signal lead run through inside and outside housing on the housing.
For the ease of Installation and Debugging, described enclosure interior is provided with the stopper slot for limiting described first moving member movement locus.The first moving member due to sensor internal is that second moving member in outer portion is adsorbed on separator, by arranging stopper slot, roughly can limit the position of the first moving member, avoid it in sensor internal arbitrarily movement, collision is caused to the circuit of sensor internal.
As preferably, described first moving member is or/and the second moving member adopts the magnet of solid cylindrical magnet or open circles annular to form.Adopt hollow magnet, quality is light, and inertia is little, reacts sensitiveer.
In conjunction with said structure, the second object of the present invention proposes one to utilize described magnetic coordinated type sensor to form potentiometer, for realizing level sensing, its key is: described second moving member is arranged on drive mechanism, this drive mechanism comprises swing arm, rotating shaft and connecting rod, one end of described swing arm is connected on described separator by rotating shaft, the other end of swing arm arranges draw-in groove, described second moving member is arranged in described draw-in groove, described swing arm is also connected with one end of described connecting rod, the other end of this connecting rod is connected with a float, along with the height of liquid level changes, float can drive described swing arm around described axis of rotation, described second moving member is moved by arching trajectory in described separator side.
Based on above-mentioned design, this device can realize the level sensing of various special screne, particularly as the fuel level sensor in auto parts machinery, utilize the characteristic that float position changes with liquid level, swing arm is driven to rotate by float and connecting rod, thus change the position of outside second moving member of separator, under the traction of magnetic force, first moving member of separator inside is rolled to different positions with the position change of the second moving member, make the position detecting circuit of its inside export different electric signal, thus realize level sensing.
Remarkable result of the present utility model is: structure is simple, and debugging is convenient, and being quick on the draw of sensor, solves the hysteresis phenomenon caused by other sensing mode, and can accomplish good electrical isolation, realizes the popularization of various special applications scene.
Accompanying drawing explanation
Fig. 1 is principle of work schematic diagram of the present utility model;
Fig. 2 is the perspective view of Fig. 1;
Fig. 3 is that the first moving member cover has helical spring view;
Fig. 4 is the Distribution of Magnetic Field figure of Fig. 3;
Fig. 5 is the structural representation of oval section volute spring;
A kind of embodiment figure of Fig. 6 to be electric quick material be resistive band;
Fig. 7 is the structure practicality figure of specific embodiment;
Fig. 8 is the A-A cut-open view of Fig. 7;
Fig. 9 is that Fig. 7 is with the rear view under connecting rod state;
Figure 10 is the drive mechanism schematic diagram of the second moving member.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model and principle of work are described in further detail.
As Figure 1-Figure 2, a kind of magnetic coordinated type sensor, comprise separator 1 and two moving members 2, 3, described two moving members 2, in 3, at least one is magnetic element, and two moving members 2, 3 are adsorbed in the plane of described separator 1 both sides by magnetic force mutually, described two moving members 2, in 3, the xsect of at least the first moving member 2 is circular, when described second moving member 3 moves along desired guiding trajectory in the side of described separator 1, described first moving member 2 rolls along same trajectories by the opposite side of Magnetic force tracting at described separator 1, the separator 1 of described first this side of moving member 2 is also provided with the position detecting circuit for detecting described first moving member 2.
As can be seen from Fig. 1 and Fig. 2, in order to realize conveniently, described first moving member 2 and the second moving member 3 all adopt the magnet of solid cylindrical magnet or open circles annular to form, and described first moving member 2 and the second moving member 3 are arc at the movement locus of described separator 1 both sides, certainly, other the kind of drive also can be adopted to allow the first moving member 2 and the second moving member 3 linearly shape orbiting motion.
And the position realizing the first moving member is conveniently detected, described position detecting circuit comprises the printed circuit unit be attached on described separator 1, this printed circuit unit is printed with electric quick material, this electric quick material is arranged along the movement locus of described first moving member 2, and show different electric output characteristics with the diverse location that the first moving member 2 stops, in implementation process, the quick material of electricity can directly be printed on the body of separator 1, also can be printed in the printed circuit board that fits with described separator 1.In conjunction with conventional electrology characteristic, the quick material of described electricity is conductive strips, resistive band, para tape or appearance gate electrode sheet.For conductive strips or resistive band, if during the insulating part that separator 1 adopts plastics or stupalith to make, conductive strips or resistive band can direct sintering on the body of separator 1, also it can be printed in a printed circuit board in advance, and then printed circuit board (PCB) and separator 1 are fitted.
When the quick material of electricity adopts conductive strips or resistive band, in order to better realize the transmission of electric signal, described first moving member 2 is provided with conductive sleeve, and conductive sleeve here can be one deck silver and the silver alloy that are attached to the first moving member 2 surface, also can adopt volute spring.
As shown in Figure 3-Figure 5, described volute spring is formed by conductive material coiling, and the coiling radius of at least one end is greater than the coiling radius of interlude, is embedded described first moving member 2 in described volute spring.
Wherein, shown in Fig. 3 is the volute spring of two ends projection, first moving member 2 is a columniform magnet, the bending of volute spring inward at both ends is to prevent magnet landing, in order to improve helical spring electric conductivity, helical spring spring wire is provided with silver coating, when the first moving member 2 and the second moving member 3 all adopt cylindrical, massive magnet, the distribution of its magnetic line of force as shown in Figure 4, along with the movement of outside second moving member 3 of separator 1, first moving member 2 of separator 1 inside can attend by volute spring and roll, the quick material of electricity is now two conductive strips, the spring wire of volute spring two ends projection contacts with these two conductive strips respectively and realizes being electrically connected, and in order to use the demand of arching trajectory, volute spring also can be set to the volute spring shape shown in Fig. 5, the spring wire outwardly convex of its one end, first moving member 2 moves along a taper cambered surface.
As seen in Figure 6; in order to better realize the conversion of position signalling to electric signal; usually still select resistance characteristic as the output parameter of sensor; its separator 1 inside is provided with the conductive strips shown in Fig. 6; comprise the one section of arc conductive strips be attached on described separator 1 many pectination buss equally distributed with relative described arc conductive strips; described many pectination buss are not arranged along the arc radius direction of described arc conductive strips, there is an angle preset between every bar pectination bus arc radius direction corresponding thereto.Described first moving member 2 moves along described arc conductive strips, and make at least one pectination bus and the conducting of described arc conductive strips, a resistive element is electrically connected with between adjacent two pectination buss, for the ease of process, be generally an equivalent resistive element, when the first moving member 2 moves on conductive strips, the position stopped is different, the resistant series of varying number can be shown, thus export different electric signal, and in order to limit the rolling track of the first moving member 2, in described enclosure interior, can also stopper slot be set.
As shown in Fig. 7-Figure 10, in order in conjunction with some special applications, described separator 1 is the housing of a sealing, and described first moving member 2 is arranged on enclosure interior with position detecting circuit, is at least provided with a signal lead 6 run through inside and outside housing on the housing.
Below for automobile engine oil sensor, further illustrate a few thing principle of this programme.
As can be seen from Fig. 7-Figure 10, described magnetic coordinated type sensor is utilized to form potentiometer, for realizing level sensing, second moving member 3 is arranged on drive mechanism 4, this drive mechanism 4 comprises swing arm 4a, rotating shaft 4b and connecting rod 4c, one end of described swing arm 4a is connected on described separator 1 by rotating shaft 4b, the other end of swing arm 4a arranges draw-in groove, described second moving member 3 is arranged in described draw-in groove, described swing arm 4a is also connected with one end of described connecting rod 4c, the other end of this connecting rod 4c is connected with a float, along with the height of liquid level changes, float can drive described swing arm 4a to rotate around described rotating shaft 4b, described second moving member 3 is moved by arching trajectory in described separator 1 side.
For automobile engine oil sensor, adopt above-mentioned design, the second moving member 2 of separator 1 outside and drive mechanism 4 is only only had to be arranged in machine oil environment, first moving member 1 of separator inside and corresponding position detecting circuit can well realize electrical isolation, first moving member adopts roll mode, the first moving member itself or the conductive sleeve that is socketed on the first moving member can be utilized directly as contact element, inner link is few, contact area is little, the resistance of motion is little, reaction is fast, wearing and tearing are few, the detection speed of sensor can be improved on the one hand, the serviceable life of sensor can also be strengthened on the other hand, stable equipment operation is reliable.
Claims (14)
1. a magnetic coordinated type sensor, it is characterized in that: comprise separator (1) and two moving members (2, 3), described two moving members (2, 3) in, at least one is magnetic element, and two moving members (2, 3) be mutually adsorbed on by magnetic force in the plane of described separator (1) both sides, described two moving members (2, 3) in, the xsect of at least the first moving member (2) is circular, when described second moving member (3) is moved along desired guiding trajectory in the side of described separator (1), described first moving member (2) is rolled along same trajectories by the opposite side of Magnetic force tracting at described separator (1), the separator (1) of described this side of first moving member (2) is also provided with the position detecting circuit for detecting described first moving member (2).
2. a kind of magnetic coordinated type sensor according to claim 1, is characterized in that: described first moving member (2) and the second moving member (3) are linear or arc at the movement locus of described separator (1) both sides.
3. a kind of magnetic coordinated type sensor according to claim 1 and 2, it is characterized in that: described position detecting circuit comprises the printed circuit unit be attached on described separator (1), this printed circuit unit is printed with electric quick material, this electric quick material is arranged along the movement locus of described first moving member (2), and shows different electric output characteristics with the diverse location that the first moving member (2) stops.
4. a kind of magnetic coordinated type sensor according to claim 3, is characterized in that: the quick print material of described electricity is on the body of separator (1) or be printed in the printed circuit board that fits with described separator (1).
5. a kind of magnetic coordinated type sensor according to claim 3, is characterized in that: the quick material of described electricity is conductive strips, resistive band, para tape or appearance gate electrode sheet.
6. a kind of magnetic coordinated type sensor according to claim 1, it is characterized in that: described position detecting circuit comprises the one section of arc conductive strips be attached on described separator (1) many pectination buss equally distributed with relative described arc conductive strips, described first moving member (2) is moved along described arc conductive strips, and make at least one pectination bus and the conducting of described arc conductive strips, between adjacent two pectination buss, be electrically connected with a resistive element.
7. a kind of magnetic coordinated type sensor according to claim 6, it is characterized in that: described many pectination buss are not arranged along the arc radius direction of described arc conductive strips between every bar pectination bus arc radius direction corresponding thereto, there is an angle preset.
8. a kind of magnetic coordinated type sensor according to claim 1 or 6 or 7, is characterized in that: on described first moving member (2), be provided with conductive sleeve.
9. a kind of magnetic coordinated type sensor according to claim 8, is characterized in that: described conductive sleeve adopts volute spring, and this volute spring is formed by conductive material coiling.
10. a kind of magnetic coordinated type sensor according to claim 9, is characterized in that: the coiling radius of described at least one end of volute spring is greater than the coiling radius of interlude, is embedded described first moving member (2) in described volute spring.
11. a kind of magnetic coordinated type sensors according to claim 1 or 2 or 4 or 5 or 6 or 7 or 9 or 10, it is characterized in that: described separator (1) is the housing of a sealing, described first moving member (2) and position detecting circuit are arranged on enclosure interior, are at least provided with a signal lead (6) run through inside and outside housing on the housing.
12. a kind of magnetic coordinated type sensors according to claim 11, is characterized in that: described enclosure interior is provided with the stopper slot for limiting described first moving member (2) movement locus.
13. a kind of magnetic coordinated type sensors according to claim 1 or 2 or 4 or 5 or 6 or 7 or 9 or 10 or 12, is characterized in that: described first moving member (2) is or/and the second moving member (3) adopts the magnet of solid cylindrical magnet or open circles annular to form.
The potentiometer that 14. a kind of magnetic coordinated type sensors as claimed in claim 1 are formed, for realizing level sensing, it is characterized in that: described second moving member (3) is arranged on drive mechanism (4), this drive mechanism (4) comprises swing arm (4a), rotating shaft (4b) and connecting rod (4c), one end of described swing arm (4a) is connected on described separator (1) by rotating shaft (4b), the other end of swing arm (4a) arranges draw-in groove, described second moving member (3) is arranged in described draw-in groove, described swing arm (4a) is also connected with one end of described connecting rod (4c), the other end of this connecting rod (4c) is connected with a float, along with the height of liquid level changes, float can drive described swing arm (4a) to rotate around described rotating shaft (4b), described second moving member (3) is moved by arching trajectory in described separator (1) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541608.0U CN204228176U (en) | 2014-09-19 | 2014-09-19 | The potentiometer that a kind of magnetic coordinated type sensor and this sensor are formed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541608.0U CN204228176U (en) | 2014-09-19 | 2014-09-19 | The potentiometer that a kind of magnetic coordinated type sensor and this sensor are formed |
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| Publication Number | Publication Date |
|---|---|
| CN204228176U true CN204228176U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420541608.0U Withdrawn - After Issue CN204228176U (en) | 2014-09-19 | 2014-09-19 | The potentiometer that a kind of magnetic coordinated type sensor and this sensor are formed |
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| CN (1) | CN204228176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197963A (en) * | 2014-09-19 | 2014-12-10 | 重庆诺柏恩自动化技术有限公司 | Magnetic linkage sensor and potentiometer comprising same |
-
2014
- 2014-09-19 CN CN201420541608.0U patent/CN204228176U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197963A (en) * | 2014-09-19 | 2014-12-10 | 重庆诺柏恩自动化技术有限公司 | Magnetic linkage sensor and potentiometer comprising same |
| CN104197963B (en) * | 2014-09-19 | 2017-03-29 | 重庆诺柏恩自动化技术有限公司 | The potentiometer that magnetic coordinated type sensor and the sensor are constituted |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150325 Effective date of abandoning: 20170329 |