CN203396355U - Non-contact type absolute angle sensor - Google Patents
Non-contact type absolute angle sensor Download PDFInfo
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- CN203396355U CN203396355U CN201320538433.3U CN201320538433U CN203396355U CN 203396355 U CN203396355 U CN 203396355U CN 201320538433 U CN201320538433 U CN 201320538433U CN 203396355 U CN203396355 U CN 203396355U
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- angle sensor
- ferroelectric memory
- chip microcomputer
- absolute angle
- sensor module
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The object of the utility model is to provide a non-contact type absolute angle sensor which is capable of achieving information recording of an absolute position without batteries. The non-contact type absolute angle sensor includes an angle sensor module, a single chip, a ferroelectric memory, and a power supply circuit, wherein the an A/D acquisition terminal of the single chip is connected with an output terminal of the angle sensor module, an input/output terminal of the single chip is connected with ferroelectric memory, the power supply circuit is used for converting external power into direct current power source needed by the angle sensor module, the single chip and the ferroelectric memory. With the non-contact type absolute angle sensor, the record of absolute position information is guaranteed to be saved after a power outage, since the non-contact type absolute angle sensor can record the position information in the ferroelectric memory before the power outage though utilizing the power outage nonvolatile function of the ferroelectric memory, and saving the position information acquired and output by the angle sensor module in the ferroelectric memory. In addition the ferroelectric memory can be erased and written for 10 million times, so that accuracy of the absolute position information is guaranteed at the power outage, though real time update of the position information under the control of the single chip when power is on.
Description
Technical field
The utility model relates to motor servo control and sensing control technical field, is specially a kind of contactless absolute angle sensor.
Background technology
Angular transducer can be used for recording the angle of rotary body rotation, in motor servo control field, is widely used.General angular transducer can record position when system power supply, once power-off has just lost the record of absolute position, current existing absolute angle sensor can record absolute location information, but after system cut-off, also need to power and maintain recording of information circuit with battery, be therefore not easy to safeguard.
Utility model content
The utility model object is to provide a kind of contactless absolute angle sensor, and it can, in the situation that not needing battery, realize the information recording of absolute position.
The utility model is to be achieved through the following technical solutions:
An absolute angle sensor, comprises angle sensor module, single-chip microcomputer, ferroelectric memory and feed circuit; The A/D acquisition interface of single-chip microcomputer is connected with the output terminal of angle sensor module, and the input/output terminal of single-chip microcomputer is connected with ferroelectric memory; Feed circuit are for being converted into the required direct supply of angle sensor module, single-chip microcomputer and ferroelectric memory by externally fed.
Preferably, described angle sensor module adopts the magnetic transducing chip of Hall effect.
Preferably, described magnetic transducing chip adopts MLX90316.
Preferably, described angle sensor module adopts precision be ± reference power source of 0.01v, and the output terminal of angle sensor module passes through amplifier modulate circuit and is connected with Chip Microcomputer A/D acquisition interface.
Further, also comprise the crystal oscillator of being powered by feed circuit, crystal oscillator is used to single-chip microcomputer that work clock is provided.
Preferably, described single-chip microcomputer is realized data transmission by the serial communication interface and the host computer that arrange.
Preferably, described communication interface adopts RS-232 or RS-485.
Preferably, described feed circuit are respectively angle sensor module, single-chip microcomputer and ferroelectric memory by stabilivolt power supply are provided.
Preferably, the prime of described feed circuit arranges energy storage device, and energy storage device is powered to angle sensing module, single-chip microcomputer and ferroelectric memory after cutting off for externally fed.
Preferably, described energy storage device adopts electric capacity.
Compared with prior art, the utlity model has following useful technique effect:
By the positional information of ferroelectric memory stored angles sensing module collection output, utilize the non-volatile function of power down of ferroelectric memory, before power down, positional information is recorded in ferroelectric memory, guarantee also can preserve the record of absolute location information after power-off; And ferroelectric memory can carry out the erasable operation of more than one hundred million times, under the control of single-chip microcomputer, can when energising, location information carry out real-time renewal, the accuracy of absolute location information while guaranteeing its power-off.
Further, adopt the magnetic transducing chip of Hall effect, realize magnetic angular induction technology, when outside has rotating magnetic field, this chip can be responded to, and exports variable analog quantity, makes sensing chip and rotary body not need directly to contact, avoid mechanical wear, improved the angular transducer life-span; By high precision reference power source, improve the output accuracy of angle sensor module, utilized the amplifier modulate circuit of the output terminal of angle sensor module to realize the conditioning to angle sensing module output signal.
Further, by the energy storage device arranging in feed circuit prime, realize after stopping power supply, still can support single-chip microcomputer, angular transducer and ferroelectric memory to complete the function of collection, storage data, and reach non-maintaining object in the operating period; After system energising, energy storage device is realized to charging.
Accompanying drawing explanation
Fig. 1 is the structural principle block diagram described in the utility model example.
Fig. 2 is the logical circuitry of angle sensor module described in the utility model example.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, described in be to explanation of the present utility model rather than restriction.
As shown in Figure 1, a kind of contactless absolute angle sensor of the utility model, comprises angle sensor module, single-chip microcomputer, ferroelectric memory and feed circuit; The A/D acquisition interface of single-chip microcomputer is connected with the output terminal of angle sensor module, and the input/output terminal of single-chip microcomputer is connected with ferroelectric memory; Feed circuit are for being converted into the required direct supply of angle sensor module, single-chip microcomputer and ferroelectric memory by externally fed.
In this preferred embodiment, as shown in Figure 2, angle sensor module adopts the magnetic transducing chip of Hall effect, further magnetic transducing chip adopts MLX90316, in order to improve the output accuracy of sensor, angle sensor module adopts precision be ± reference power source of 0.01v, in order to realize, the output signal of sensor is nursed one's health, and the output terminal of angle sensor module passes through amplifier modulate circuit and is connected with Chip Microcomputer A/D acquisition interface.
In this preferred embodiment, as shown in Figure 1, the utility model also comprises the crystal oscillator of being powered by feed circuit, and crystal oscillator is used to single-chip microcomputer that work clock is provided; In order to realize feedback and the inquiry of data, single-chip microcomputer is realized data transmission by the serial communication interface and the host computer that arrange, and wherein, communication interface preferably adopts RS-232 or RS-485.
In this preferred embodiment, feed circuit are mainly externally fed to be changed into the direct supply of the each several part needs that sensor comprises, can select existing comparatively ripe DC/DC module to realize; In order to improve the acquisition precision of sensor, the stabilivolt that the power supply after conversion can pass through etc. carrys out the ripple of restriction system, and is connected with angle sensor module, single-chip microcomputer and ferroelectric memory respectively.
In this preferred embodiment, as shown in Figure 1, the prime of feed circuit arranges energy storage device, and energy storage device is powered to angle sensing module, single-chip microcomputer and ferroelectric memory after cutting off for externally fed.In order to reach non-maintaining in the operating period, adopt electric capacity as energy storage device, be placed on the prime of feed circuit.When system powers on, can charge to electric capacity, the capacity of electric capacity can need to calculate according to the required electric weight of circuit using.
During use, first to the contactless absolute angle sensor initialization of the utility model, then at single-chip microcomputer, carry out main flow, control angle sensing module starts to carry out positional information collection, the result use gathering upgrades in time to memory location information, and in galvanization, circulate gather and upgrade.When host computer need to be inquired about the positional information in angular transducer, by communication modes, to single-chip microcomputer, send the instruction of interrupt; Single-chip microcomputer is received after communicating interrupt, exits main flow, processes communication data, and data are resolved, if judge that it is effective order, after the sensing station information inquiry in storer being arrived according to order, by communication interface, returns to host computer; If illegal command abandons, then return to main flow.
Claims (10)
1. a contactless absolute angle sensor, is characterized in that, comprises angle sensor module, single-chip microcomputer, ferroelectric memory and feed circuit; The A/D acquisition interface of single-chip microcomputer is connected with the output terminal of angle sensor module, and the input/output terminal of single-chip microcomputer is connected with ferroelectric memory; Feed circuit are for being converted into the required direct supply of angle sensor module, single-chip microcomputer and ferroelectric memory by externally fed.
2. a kind of contactless absolute angle sensor according to claim 1, is characterized in that, described angle sensor module adopts the magnetic transducing chip of Hall effect.
3. a kind of contactless absolute angle sensor according to claim 2, is characterized in that, described magnetic transducing chip adopts MLX90316.
4. according to a kind of contactless absolute angle sensor described in claim 1 or 2 or 3, it is characterized in that, described angle sensor module adopts precision be ± reference power source of 0.01v, and the output terminal of angle sensor module passes through amplifier modulate circuit and is connected with Chip Microcomputer A/D acquisition interface.
5. a kind of contactless absolute angle sensor according to claim 1, is characterized in that, also comprise the crystal oscillator of being powered by feed circuit, crystal oscillator is used to single-chip microcomputer that work clock is provided.
6. a kind of contactless absolute angle sensor according to claim 1 or 5, is characterized in that, described single-chip microcomputer is realized data transmission by the serial communication interface and the host computer that arrange.
7. a kind of contactless absolute angle sensor according to claim 6, is characterized in that, described communication interface adopts RS-232 or RS-485.
8. a kind of contactless absolute angle sensor according to claim 1, is characterized in that, described feed circuit are respectively angle sensor module, single-chip microcomputer and ferroelectric memory by stabilivolt power supply is provided.
9. according to a kind of contactless absolute angle sensor described in claim 1 or 8, it is characterized in that, the prime of described feed circuit arranges energy storage device, and energy storage device is powered to angle sensing module, single-chip microcomputer and ferroelectric memory after cutting off for externally fed.
10. a kind of contactless absolute angle sensor according to claim 9, is characterized in that, described energy storage device adopts electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538433.3U CN203396355U (en) | 2013-08-30 | 2013-08-30 | Non-contact type absolute angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538433.3U CN203396355U (en) | 2013-08-30 | 2013-08-30 | Non-contact type absolute angle sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396355U true CN203396355U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320538433.3U Expired - Lifetime CN203396355U (en) | 2013-08-30 | 2013-08-30 | Non-contact type absolute angle sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203396355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043239A (en) * | 2015-08-08 | 2015-11-11 | 南京博纳威电子科技有限公司 | Magnetic angle sensor based on MLX 90316 |
| CN107367226A (en) * | 2017-09-11 | 2017-11-21 | 沈阳仪表科学研究院有限公司 | Digital angle sensor |
-
2013
- 2013-08-30 CN CN201320538433.3U patent/CN203396355U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043239A (en) * | 2015-08-08 | 2015-11-11 | 南京博纳威电子科技有限公司 | Magnetic angle sensor based on MLX 90316 |
| CN107367226A (en) * | 2017-09-11 | 2017-11-21 | 沈阳仪表科学研究院有限公司 | Digital angle sensor |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140115 |
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| CX01 | Expiry of patent term |