CN203747709U - Drive device of medical non-contact direct current motor - Google Patents
Drive device of medical non-contact direct current motor Download PDFInfo
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- CN203747709U CN203747709U CN201420153613.4U CN201420153613U CN203747709U CN 203747709 U CN203747709 U CN 203747709U CN 201420153613 U CN201420153613 U CN 201420153613U CN 203747709 U CN203747709 U CN 203747709U
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- 230000003321 amplification Effects 0.000 claims abstract description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 9
- 230000006837 decompression Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005669 field effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005355 Hall effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000005690 magnetoelectric effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 101150037009 pin1 gene Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a drive device of a medical non-contact direct current motor. The drive device comprises a power supply driving system, a hall sensor system and an H-bridge driving module, wherein the power supply driving system supplies power to the hall sensor system and an H-bridge drive circuit, the power supply driving system comprises an IC voltage reduction and stabilizing circuit, the hall sensor system comprises an integration amplification circuit and a hall sensor circuit, and the H-bridge driving module comprises a power amplification circuit. The drive device controls the two current outputs by employing the hall sensor principles, and the H-bridge drive circuit selects the driving current flow direction to form the drive device of the direct current motor.
Description
Technical field
The utility model relates to a kind of Medical Devices, specially designed a medical non-contact type DC electric machine drive apparatus.
Background technology
Hall effect is the one of magnetoelectric effect, and this phenomenon is that scientist's Hall is found in the time of the conductive mechanism at research metal in 1879.Found afterwards that semiconductor, conductor fluid etc. also had this effect, and semi-conductive Hall effect is more much better than than metal, the various Hall elements that utilize this phenomenon to make, are widely used in the aspects such as industrial automation technology, inspection technology and information processing.The variation in Hall switch device inductiopn rotor magnetic field and export the digital level that height changes, utilizes the output of its hall device on circuit, to carry out after logical process, the rotation that the electric current amplifying through power tube can direct-driving motor.This position transducer is adapted in simple control system that speed is higher.Control for low speed can adopt linear hall-effect device, utilizes the linearity of hall device to export the every change in location under extremely of the rotor reflecting, can accomplish to control comparatively accurately.
Existing DC driven scheme has multiple, as adopted the control system of DSP as master controller, as adopted FPGA to control brushless electric machine, as adopted ATMEGA single-chip microcomputer scheme etc.These control methods can both realize the controls such as the rotating of motor, have larger difference but realize the aspects such as the energy resource consumption of cost, control precision, operation stability and peripheral circuit in system.The control program that uses DSP and FPGA, the control precision of system is higher, and stability is also all right, but is generally only used in industrial production, and high cost.And adopt ATMEGA control program cost low, but the performance of system differs greatly, and can not meet our requirement.And this practical device adopt H bridge driver module and Hall element control respectively motor to turn to rotating speed be a very large breakthrough, there is the advantages such as high accuracy, high anti-jamming capacity, fast response time due to Hall element, make this device there is very high precision and stability, thereby ensured the quality of device.
Summary of the invention
The purpose of this utility model is to provide a kind of medical non-contact type DC electric machine drive apparatus, a Novel medical operation power motor drive unit that utilizes hall sensing speed control principle and H bridge driver module to design.
the technical solution of the utility model is as follows:
A kind of medical non-contact type DC electric machine drive apparatus, comprises power drives system, Hall sensor systems and H bridge driver module, and power drives system is given respectively Hall sensor systems and H bridge drive circuitry; Wherein power drives system comprises IC decompression voltage regulator; Hall sensor systems comprises integrated amplifier and Hall element circuit; H bridge driver module comprises power amplification circuit.
Described power drives system adopts LM2672 series monolithic integrated circuit and peripheral circuit composition; H bridge driver module comprises 4 MTD2955V field effect transistor.
the utility model compared to existing technology tool has the following advantages:
Medical non-contact type DC electric machine drive apparatus of the present utility model stable performance, compact conformation, antijamming capability is strong, is difficult for producing error.
This device has been realized electric energy and moving transformation of energy, has the advantages such as high accuracy, fast response time, volume are little, lightweight, good stability.
Brief description of the drawings
Fig. 1 is hardware architecture schematic diagram.
Fig. 2 is workflow diagram of the present utility model.
Fig. 3 is H bridge drive circuit figure of the present utility model.
Fig. 4 is power drives system circuit diagram of the present utility model.
Fig. 5 is integrated amplification module figure of the present utility model.
Fig. 6 is hall sensing circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and example in detail details of the present utility model.
As shown in Figure 1, the utility model comprises three large system modules: power drives system, Hall sensor systems and H bridge driver module.Power drives system adopts 5V power drives system, gives respectively Hall sensor systems and H bridge drive circuitry.Wherein power drives system comprises IC decompression voltage regulator; Hall sensing system comprises integrated amplifier and Hall components and parts circuit; H bridge driver module comprises power amplification circuit.
As shown in Figure 2, in of the present utility model three large system modules, power drives system comprises external power supply and IC decompression voltage regulator; Hall sensor systems comprises integrated amplifier and Hall element circuit; H bridge driver module comprises power amplification circuit, and the output of power amplification circuit connects motor.
As shown in Figure 3, this modular circuit comprises 4 triodes and a motor to described H bridge driver module.The 5V voltage of the output output of H bridge driver module is supplied with motor, make motor rotation, a pair of triode on necessary conducting diagonal.The conducting situation right according to different triodes, electric current may flow through motor from left to right or from right to left, thereby control turning in the time of Q1 pipe and the conducting of Q4 pipe of motor, electric current just passes motor from positive source through Q1 from left to right, and then get back to power cathode through Q4, the electric current of this flow direction clockwise rotates drive motors.In the time of triode Q1 and Q4 conducting, electric current will flow through motor from left to right, thereby drive motors is pressed specific direction rotation.Another situation to triode Q2 and Q3 conducting, electric current will flow through motor from right to left.In the time of triode Q2 and Q3 conducting, electric current will flow through motor from right to left, thereby drive motors rotates along other direction.The rotation direction of the external motor of H bridge driver module control.
Described power drives system as shown in Figure 4, the IC decompression voltage regulator of this system adopt have that the IC chip LM2672 of high efficiency lowering and stabilizing blood pressure function designs+5v voltage-stabilizing output circuit.It has the efficient 1A step-down voltage of the SIMPLE SWITCHER power supply changeover device pressurizer of multifrequency nature.The monolithic integrated circuit that this LM2672 series regulates is set up a lmdmos process, can drive the outstanding circuit of a load current and load regulation, can fix output voltage 3V by external circuit, 5.0V voltage, can also be with adjustable ADJ series output 1.21v to 37v voltage.Thereby for integrated amplifier and H bridge driver module provide required voltage value.
In Hall sensor systems, integrated amplifier as shown in Figure 5, the integrated amplifier that adopts IC chip LM386 to design.LM386 aims at the designed power amplifier integrated circuit of low loss power supply, and its built-in gain is 20, sees through the collocation of pin1 and pin8 pin interdigit electric capacity, and gain reaches as high as 200.LM386 can use battery for supply power supply, and input voltage range can, by 4V ~ 12V, only consume 4mA electric current, and distortion be low during without start.And there is low-power consumption, voltage gain capable of regulating, the advantage such as supply voltage scope is large, outward element is few, total harmonic distortion is little.
In Hall sensor systems, as shown in Figure 6, Hall element is divided into two kinds of line style Hall element and Hall switch sensors to hall sensing circuit:
1 Hall switch sensor is made up of pressurizer, Hall element, differential amplifier, Schmidt trigger and output stage, and it exports digital quantity.Hall switch sensor also has a kind of special form, is called locking key type Hall element.
2 lienar for Hall elements are made up of Hall element, linear amplifier and emitter follower, and it exports analog quantity.
The utility model adopts linear hall sensor, and Hall voltage changes with the variation of magnetic field intensity, and magnetic field is stronger, and voltage is higher, and magnetic field is more weak, and voltage is lower.Hall voltage value is very little, conventionally only has several millivolt, but amplifier in integrated circuit amplifies, and just can make this voltage amplification to being enough to export stronger signal.So just can control the input voltage of motor, thereby control the rotating speed of motor.
adopt this novel driving device to be used in the advantage in medical operation power apparatus:
In anti-power tool, the electromagnetic ability of interfering with each other is strong, good stability, the very strong anti-external interference ability of tool simultaneously, as interference signal of other equipment and anti-mistake in operating room etc., be difficult for because environmental factor produces error, can not affected by electric circumstance, output signal be reliable, can be grease proofing, moistureproof, and can be used in the environment of HTHP.These advantages can ensure that this novel driving device is for medical operation power tool, autoclave sterilization after effectively solving operation power instrument and using (can at 145 degree high temperature and high pressure environments), more because antijamming capability is strong, conversion accuracy is high, stable performance, thereby avoid the shake of operation tool in the course of work, further improved operating success rate.In sum, medical non-contact type DC electric machine drive apparatus not only has commercial value and more has certain social value.
Claims (2)
1. a medical non-contact type DC electric machine drive apparatus, is characterized in that: this device comprises power drives system, Hall sensor systems and H bridge driver module, and power drives system is given respectively Hall sensor systems and H bridge drive circuitry; Wherein power drives system comprises IC decompression voltage regulator; Hall sensor systems comprises integrated amplifier and Hall element circuit; H bridge driver module comprises power amplification circuit.
2. medical non-contact type DC electric machine drive apparatus according to claim 1, is characterized in that: described power drives system adopts LM2672 series monolithic integrated circuit and peripheral circuit composition; H bridge driver module comprises 4 MTD2955V field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153613.4U CN203747709U (en) | 2014-03-31 | 2014-03-31 | Drive device of medical non-contact direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153613.4U CN203747709U (en) | 2014-03-31 | 2014-03-31 | Drive device of medical non-contact direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747709U true CN203747709U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153613.4U Expired - Lifetime CN203747709U (en) | 2014-03-31 | 2014-03-31 | Drive device of medical non-contact direct current motor |
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| Country | Link |
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| CN (1) | CN203747709U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861593A (en) * | 2018-12-28 | 2019-06-07 | 诺鑫（南通）医疗技术有限公司 | A kind of hollow-cup motor control method |
-
2014
- 2014-03-31 CN CN201420153613.4U patent/CN203747709U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861593A (en) * | 2018-12-28 | 2019-06-07 | 诺鑫（南通）医疗技术有限公司 | A kind of hollow-cup motor control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200616 Address after: 226300 Tongzhou hi tech Zone, Nantong, Jiangsu province (Jinqiao West Road) Patentee after: JIANGSU NUOSHENG MEDICAL TECHNOLOGY CO.,LTD. Address before: 226300 Tongzhou hi tech Zone, Nantong, Jiangsu province (Jinqiao West Road) Patentee before: NUOXIN (NANTONG) MEDICAL TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |