CN201132014Y

CN201132014Y - Alternative magnetotherapeutic bed for medical purpose

Info

Publication number: CN201132014Y
Application number: CNU2007201792037U
Authority: CN
Inventors: 魏晓慧; 盛海云
Original assignee: 魏晓慧; 盛海云
Current assignee: Guangzhou Yikang Medical Equipment Industrial Co., Ltd.
Priority date: 2007-12-29
Filing date: 2007-12-29
Publication date: 2008-10-15
Anticipated expiration: 2017-12-29

Abstract

The utility model discloses an alternating magnetic treatment bed, which comprises a bed body, coils installed on the bed body and used for generating a pulsed magnetic field, a control device used for controlling the output of the coils and a power supply circuit for supplying power for the control device. The control device comprises a magnetic field generating circuit, a debugging circuit taken as an interface which is connected with a computer, a conventional man-machine interface composed of a keyboard and a display unit and a controlling circuit which is connected with each unit and manages and controls each unit. The alternating magnetic treatment bed can control the coils installed on the bed body an used for generating pulsed magnetic field through the control device, and cure diseases by using the main physical properties of the magnetic field, and the interaction between the magnetic field and the organic tissue, and control the pulsed magnetic field frequency to generate different alternating magnetic field intensity, to ensure different patients and different disease conditions to select optimum alternating magnetic field intensity therapeutic schedule, and simultaneously has the characteristic of strong penetrating power.

Description

A kind of medical alternation magnetic therapeutic bed

Technical field

This utility model belongs to medical device for magnetotherapy, specifically is meant a kind of medical alternation magnetic therapeutic bed that utilizes Main physical character and the magnetic field and the organ-tissue generation reciprocal action treatment disease in magnetic field.

Background technology

According to domestic and international research in recent ten years, proved that magnetic therapy has tangible effect to body-care and medical aspect.Its cardinal principle is by scientifically controlling the effect of low-frequency pulse electromagnetic force to human body, change the ion distribution of cell membrane both sides, utilizing Main physical character and the magnetic field and the organ-tissue generation reciprocal action treatment disease in magnetic field.Wherein the size and Orientation of magnetic field intensity does in time all periodically that the magnetic field of alternate is called alternating magnetic field, and alternating magnetic field has important clinical therapeutical effect and value.

Many Magnetotherapeutic apparatus have appearred at present on the market, but the rarely seen report that device for magnetotherapy is combined with bed, and the magnetic field pulse that common magnet therapeutic apparatus produces is not high, penetration power is not strong, and can not reach best therapeutic effect according to different patients, different state of an illness control impuls field frequencies.

The utility model content

The technical problem that this utility model need solve provides a kind of magnetic field pulse height, penetration power is strong, and can be according to the alternation magnetic therapeutic bed of different patients, different state of an illness control impuls field frequency.

Design a kind of alternation magnetic therapeutic bed according to the above-mentioned problem that needs to solve, included a body and be installed on the coil that is used to produce pulsed magnetic field on the body, be used for the control device of control coil output, be the power circuit of control device power supply.Described control device includes the generation field circuit, and the debug circuit that connects with computer as interface by the conventional man machine interface that keyboard, display unit are formed, connects with above-mentioned each unit and it is managed the control circuit of control.

Described control circuit comprises single-chip microcomputer and peripheral circuit thereof, peripheral circuit is included as the crystal oscillating circuit that single-chip microcomputer provides clock, the reset circuit that connects with the single-chip microcomputer reset terminal, the outfan that produces frequency with single-chip microcomputer connects the level shifting circuit that is used to change the single-chip microcomputer output frequency, connects with the signal output part of single-chip microcomputer and is used to point out the user to operate or the warning circuit of instrument working condition.

The input of the described generation field circuit that connects with control circuit connects with the outfan of power circuit, this outfan connects with the coil that produces pulsed magnetic field, the outfan that single-chip microcomputer produces frequency connects with PIC3, the PIC4, PIC25, the PIC26 pin that produce field circuit through level shifting circuit, and the frequency of coil that the break-make that single-chip microcomputer produces the even element of light in the field circuit by control realizes outputing to the generation pulsed magnetic field is consistent with the frequency of single-chip microcomputer.

Described generation field circuit outfan is the multichannel output channel, and working method is independent or works simultaneously.

This utility model produces pulsed magnetic field by the coil that control device control is installed on the body, utilize Main physical character and the magnetic field and the organ-tissue generation reciprocal action treatment disease in magnetic field, produce different alternating magnetic field intensity by the control impuls field frequency, make different patients, the different state of an illness can select best magnetic intensity therapeutic scheme, possess the strong characteristics of penetration power simultaneously.

Description of drawings

Accompanying drawing 1 is this utility model theory diagram; Accompanying drawing 2 is this utility model control circuit theory diagrams; Accompanying drawing 3 is this utility model control circuit peripheral circuit schematic diagrams; Accompanying drawing 4 is this utility model keyboard circuit schematic diagrams; Accompanying drawing 5 is this utility model display circuit schematic diagrams; Accompanying drawing 6 is this utility model debug circuit schematic diagrams; Accompanying drawing 7 is this utility model power circuit principle figure; Accompanying drawing 8 is that this utility model produces the field circuit schematic diagram.

The specific embodiment

For the ease of those skilled in the art's understanding, this utility model structural principle is described in further detail below in conjunction with specific embodiment and accompanying drawing:

A kind of alternation magnetic therapeutic bed includes a body and is installed on the coil that is used to produce pulsed magnetic field on the body, is used for the control device of control coil, is the power circuit of control device power supply.Described control device includes the generation field circuit, and the debug circuit that connects with computer as interface by the conventional man machine interface that keyboard, display unit are formed, connects with above-mentioned each unit and it is managed the control circuit of control.

As shown in Figure 1, the kernel control chip of alternation magnetic therapeutic bed control device is Philip single-chip microcomputer LPC2214, and The whole control system can be divided into six modules, control circuit, keyboard circuit, display circuit, generation field circuit, debug circuit, power circuit.

As shown in Figure 2, control circuit is the core circuit of alternation magnetic therapeutic bed control device, and except power circuit, the control circuit module is other several modular circuits of control, and whole system is worked without any confusion.Control circuit is made up of single-chip microcomputer and peripheral circuit, peripheral circuit is included as the crystal oscillating circuit that single-chip microcomputer provides clock, with the reset circuit that the single-chip microcomputer reset terminal connects, be used to change the level shifting circuit of single-chip microcomputer output frequency, connect with the single-chip microcomputer outfan and be used to point out the user to operate warning circuit wrong or the instrument working condition.Topmost parts are LPC2214 single-chip microcomputers, and the I/O mouth has four of P0-P3, and one has 128 I/O mouths, and packing forms is paster 144 pins.

As shown in Figure 3, reset circuit comprises collector U5 and locates to enclose circuit, U5 has adopted the chip SP708S that is specifically designed to reset circuit, the reseting pin RESET of single-chip microcomputer LPC2214 is the schmidt trigger input pin, have an extra interference filter, input low level is effective, and the back RESET reset signal that powers on must keep 10MS.SP708S belongs to microprocessor (uP) monitoring device, and it is integrated with numerous assemblies, can monitor the power supply in uP and the digital display circuit and the working condition of battery.Owing to the use of above numerous assemblies, strengthen the reliability and the work efficiency of system effectively.SP708S comprises a WatchDog Timer, a uP reseting module, a power supply failure comparator, and a hand-reset input module, be applicable to+3.0V or+the 3.3V environment.More reliable in order to reset, pin SW10 is connected with SR in the keyboard circuit, when pressing when resetting, SW10 is a low level signal, be input to 1 pin of SP708S, then one of 7 pins of SP708S output is wide be 200MS low level pulse signal, exports more reliable 200MS low level pulse signal to the reseting pin of single-chip microcomputer, the test reset foot and the debug circuit of jtag interface by control 74HC125 triple gate.

Crystal oscillating circuit comprises crystal oscillator X1, and mode of operation is an oscillation mode, and the frequency that is produced is 11.0592MHz, is passed to the XTAL1 and the XTAL2 pin of LPC2214 single-chip microcomputer.This frequency of oscillation is the speed critical factor that influences the single-chip microcomputer operation, and the surge frequency range of being imported is 1-30MHz.

Level shifting circuit comprises integrated chip U7 and peripheral circuit, and U7 adopts 3.3V to change 5V numeral integrated chip LVX4245, and B0-B7 is an input, and A0-A7 is an outfan.It is pin P0.22～P0.25 that single-chip microcomputer produces the frequency output terminal mouth, the output of four tunnel frequencies is separate, the square wave frequency scope that is produced is 0～1KHz, after level conversion, receive PIC3, the PIC4, PIC25, the PIC26 pin that produce the field circuit module respectively, control produces the break-make of light idol element in the field circuit module.By LED lamp in the audion 8050 anti-phase supervisory keyboard circuit, pin SW12-SW15 is the SW12～SW15 that is connected to keyboard circuit simultaneously.Effect is the working condition of indicating corresponding output channel with light-emitting diode display.

Warning circuit includes audion Q2 and buzzer B1, and the base stage of audion connects with the pin P0.7 of LPC2214 single-chip microcomputer, and colelctor electrode connects with buzzer, is used to point out the user to operate wrong or the instrument working condition.

As shown in Figure 8, producing field circuit is the key component that produces magnetic field, be that last output generation magnetic field is come the human body therapy output port, wire jumper J12, J13, J14, J16, J17 meet transformer alternating output lead 25V, 45V, 8V, 25V, 45V respectively, wire jumper J5, J6, J7, J8 connect to be installed on to be used to export the pulsed magnetic field coil on the body, corresponding 1,2,3,4 four passage output.Two relays of pin P0.29 control of single-chip microcomputer switch output waveform.

Two relays of pin P0.29 control of single-chip microcomputer switch output waveform.Connect by the light current straightening of single-chip microcomputer output and to drive big coil to produce high-intensity magnetic field be impossible.Therefore this utility model produces Magnetic Field Design thought and is: can produce magnetic field according to hot-wire coil, the principle that the while magnetic field intensity is directly proportional with the electric current and the number of turns of energising, reach desired magnetic field intensity, in order to produce different low frequency pulsed magnetic fields, come the control coil output frequency simultaneously by the frequency that single-chip microcomputer produces.

Described coil diameter is 65cm, is 400 circles around the copper cash number of turns, with 45V/3.25A or 25V/2A drive coil.Driving voltage is 45V/3.25A when selecting sinewave output, and driving voltage is 25V/2A when selecting square wave.Voltage transitions is that the pin P0.29 by single-chip microcomputer exports high or low level and comes the relay in the control circuit to realize.Low level is promptly selected sinewave output for selecting 45V; High level is 25V, promptly selects square wave output.Single-chip microcomputer FREQUENCY CONTROL port is isolated through light idol, and purpose is to eliminate the interference of analog circuit to digital circuit, and it is consistent with the frequency of single-chip microcomputer to realize outputing to the frequency of coil through light idol back by the break-make of controlling field effect transistor.

As shown in Figure 4, keyboard circuit is the port of user and instrument information exchange, is the interface that the user is input to information in instrument.In order to make button more reliable and accurate, circuit design has adopted specially in the chip ZLG7290 of keyboard circuit control.LPC2214 single-chip microcomputer pin P0.2, P0.3 carries out data communication with ZLG7290, and each button has different key assignments.Whenever press the button effectively, the 14 pin output low levels of ZLG7290 produce external interrupt to single-chip microcomputer, and then corresponding key assignments is delivered in the single-chip microcomputer, carry out the corresponding button function.

As shown in Figure 5, display circuit is the service platform that the user given information feedback by instrument.Design is adopted is that 240 * 128 dot matrix LCD shows.Integrated circuit U101～U103 is used to produce negative voltage, through three grades of amplifications, at-Vout output end voltage is-25V at last, supplies with liquid crystal display screen.Potentiometer W3 is used to regulate the brightness of liquid crystal display screen.D0-D7 meets the data bus interface P2.0--P2.7 of single-chip microcomputer, and the character that single-chip microcomputer will show is delivered to liquid crystal display screen through P2.0--P2.7 and shown.P3.1, P3.27, P1.1 that pin A1, nWE, nOE connect the single-chip microcomputer mouth respectively control demonstration.

As shown in Figure 6, debug circuit is the interface that computer is connected with single-chip microcomputer, and effect is by after the computer compiler, downloads in the program's memory space of single-chip microcomputer.Make things convenient for the online modification program simultaneously, in-circuit emulation.The LPC2214 single-chip microcomputer dual mode that downloaded, a kind of is to use the JTAG emulator; Another kind is to download by the serial line interface of computer.U6 adopts the SP3232E electrical level transferring chip, and the computer serial port is communicated by letter with the serial UART0 of LPC2214 single-chip microcomputer.In the time will downloading, wire jumper ISP be connected with serial line interface.Being about to P0.14 ground connection. wire jumper J2 is connected with JTAG emulation, and RTCK, TDO, TDI, TCK, TMS, nTRST, nRST connect debugging interface P1.26, P1.27, P1.28, P1.29, P1.30, P1.31, the RESET of single-chip microcomputer respectively.

As shown in Figure 7, power circuit is that other circuit module work is given in power supply.It mainly is made up of transformator, AC-DC circuit, mu balanced circuit.Two transformators in the circuit, the transformation output voltage has three kinds, is respectively 45V, 25V, 8V.And power supply is stable to the voltage request of single-chip microcomputer work, and the running voltage of LPC2214 is 3.3V and 1.8V simultaneously, must carry out voltage transitions.OUT1 is that power supply shows to LCD, and OUT2 is that the LPC2214 single-chip microcomputer is given in power supply, and wire jumper J5 is the 8V output lead that connects transformator.

The above only is an embodiment of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from this utility model creation design; can also make some changes and improvement, these all belong to protection domain of the present utility model.

Claims

1, a kind of alternation magnetic therapeutic bed, include a body and be installed on the coil that is used to produce pulsed magnetic field on the body, the control device that is used for control coil output, power circuit for the control device power supply, it is characterized in that: described control device comprises the generation field circuit, the debug circuit that connects with computer as interface by the conventional man machine interface that keyboard, display unit are formed, connects with above-mentioned each unit and it is managed the control circuit of control.

2, alternation magnetic therapeutic bed according to claim 1, it is characterized in that: described control circuit comprises single-chip microcomputer and peripheral circuit thereof, peripheral circuit is included as the crystal oscillating circuit that single-chip microcomputer provides clock, the reset circuit that connects with the single-chip microcomputer reset terminal, the outfan that produces frequency with single-chip microcomputer connects the level shifting circuit that is used to change the single-chip microcomputer output frequency, connects with the signal output part of single-chip microcomputer and is used to point out the user to operate or the warning circuit of instrument working condition.

3, alternation magnetic therapeutic bed according to claim 2, it is characterized in that: the input of the described generation field circuit that connects with control circuit connects with the outfan of power circuit, the outfan that produces field circuit connects with the coil that produces pulsed magnetic field, the outfan that single-chip microcomputer produces frequency connects with PIC3, the PIC4, PIC25, the PIC26 pin that produce field circuit through level shifting circuit, and the frequency of coil that the break-make that single-chip microcomputer produces the even element of light in the field circuit by control realizes outputing to the generation pulsed magnetic field is consistent with the frequency of single-chip microcomputer.

4, alternation magnetic therapeutic bed according to claim 3 is characterized in that: described generation field circuit outfan is the multichannel output channel, and working method is independent or works simultaneously.