CN104765299A - Alternating current vibration motor amplitude control method and control circuit and massage bed - Google Patents
Alternating current vibration motor amplitude control method and control circuit and massage bed Download PDFInfo
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- CN104765299A CN104765299A CN201510055419.1A CN201510055419A CN104765299A CN 104765299 A CN104765299 A CN 104765299A CN 201510055419 A CN201510055419 A CN 201510055419A CN 104765299 A CN104765299 A CN 104765299A
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Abstract
The invention provides an alternating current vibration motor amplitude control method which is good in control effect. The method comprises the steps that 1, an alternating current electrical signal is converted into a continuous high-low level signal to be input into a single chip microcomputer through a shaping and filter circuit; 2, the single chip microcomputer counts time t1 of a low level and time t2 of a high level through a timer I, and a sum value is obtained by adding t1 to t2; 3, the step two is repeated for N times, N sum values are obtained, the maximum value and the minimum value of the N sum values are filtered out, an average value of the rest of the sum values is calculated, and a period T of an alternating current is obtained; 4, the single chip microcomputer at least calculates the time tA from a starting point to the time when the high level reaches the maximum value A and the time tC from the starting point to the time when the lower level reaches the minimum value C in one period T; 5, according to tA and tC, the single chip microcomputer controls the turn-on time of a vibration motor in one alternating current period T through a timer II.
Description
Technical field
The present invention relates to and a kind ofly exchange vibrations motor amplitude of vibration control method, adopt this interchange shake the control circuit of motor amplitude of vibration control method and adopt this interchange to shake the massage bed of motor amplitude of vibration control method and control circuit.
Background technology
Prior art, the vibrations motor that massage bed uses is generally vibrating, and shake the time, vibration amplitude, vibrating mode is not controlled; Simultaneously prior art generally adopts cable operator device to control motor vibration, and user must using in massage bed 1-2m.
Summary of the invention
Technical matters to be solved by this invention is the interchange vibrations motor amplitude of vibration control method, control circuit and the massage bed that provide a kind of vibration amplitude to control.
For solving above-mentioned existing technical matters, the present invention adopts following scheme: exchange vibrations motor amplitude of vibration control method, comprise the following steps:
Step one, by integer and filtering circuit, ac signal is converted into continuous print low and high level signal and is input to single-chip microcomputer;
Step 2, single-chip microcomputer calculate wherein one section of low level time t by timer I
1with the time t of one section of high level
2, by t
1and t
2be added, obtain one and value;
Step 3, to repeat N time by step 2, obtain N number of and value, the N number of and maximal value in being worth of filtering and minimum value, then ask and to remain and the mean value of value obtains the cycle T of alternating current;
Step 4, single-chip microcomputer at least calculate alternating current in one-period T voltage from this cycle starting point to time t when there is M value
mwith from this cycle starting point to time t when there is N value
n;
Step 5, according to t
m, t
n, single-chip microcomputer controls the vibrations service time of motor in an ac period T by timer II.
As preferably, single-chip microcomputer controls the vibrations number of times of vibrations motor in the unit period of alternating current by timer II.
Present invention also offers a kind of control circuit simultaneously, comprise single-chip microcomputer and vibrations motor, connected between described single-chip microcomputer, vibrations motor by circuit I, described vibrations motor amplitude of vibration control method adopts interchange vibrations motor amplitude of vibration control method described above.
As preferably, described vibrations motor one end is connected with the node I be connected with AC-powered end, described single-chip microcomputer has I/O pin and PWM pin, described circuit I comprises NPN type triode, photoelectrical coupler I, bidirectional thyristor, photoelectrical coupler II and transformer, described NPN type triode has base stage, emitter and collector, described bidirectional thyristor has G pole, T1 pole and T2 pole, be connected between the base stage of described NPN type triode and the I/O pin of single-chip microcomputer, grounded emitter, described photoelectrical coupler I inside has light-emitting component I and photo-sensitive cell I, described photoelectrical coupler I has the first pin I, first pin II, first pin III and the first pin IV, described first pin I is connected with the positive pole of light-emitting component I in photoelectrical coupler I inside, first pin II is connected with the negative pole of light-emitting component I in photoelectrical coupler I inside, described first pin I is connected with+5V feeder ear in photoelectrical coupler I outside, first pin II is connected with the collector of NPN type triode in photoelectrical coupler I outside, described first pin III is connected with one end of photo-sensitive cell I in photoelectrical coupler I inside, first pin IV is connected with the other end of photo-sensitive cell I in photoelectrical coupler I inside, described first pin III is the outside and vibrations motor other end at photoelectrical coupler I, the T1 pole of bidirectional thyristor connects, described first pin IV is connected with the G pole of bidirectional thyristor in photoelectrical coupler I outside, the T2 pole of described bidirectional thyristor is connected with the node II be connected with AC-powered end, described photoelectrical coupler II inside has light-emitting component II and photo-sensitive cell II, described photoelectrical coupler II has the second pin I, second pin II, second pin III and the second pin IV, described second pin I is connected with the positive pole of light-emitting component II in photoelectrical coupler II inside, second pin II is connected with the negative pole of light-emitting component II in photoelectrical coupler II inside, described second pin I is connected with transformer in photoelectrical coupler II outside, second pin II is connected with transformer in photoelectrical coupler II outside, described second pin III is connected with+5V feeder ear in photoelectrical coupler II outside, second pin IV is connected with resistance VII one end in photoelectrical coupler II outside, the PWM pin of described single-chip microcomputer is connected with resistance VII one end, described resistance VII other end ground connection.
As preferably, be connected by resistance I between the base stage of described NPN type triode and the I/O pin of single-chip microcomputer.
As preferably, the collector of described NPN type triode is connected with+5V feeder ear by resistance II.
As preferably, described first pin I is connected by resistance III with+5V feeder ear in photoelectrical coupler I outside.
As preferably, described first pin III in photoelectrical coupler I outside successively contact resistance IV, after resistance V with shake the motor other end, the T1 pole of bidirectional thyristor is connected.
As preferably, described control circuit also comprises electric capacity I and electric capacity II, one end of described electric capacity I is connected between resistance IV and resistance V, the other end is connected with the T2 pole of bidirectional thyristor, and one end of described electric capacity II is connected with the T1 pole of bidirectional thyristor, the other end is connected with node I.
As preferably, the second pin II is connected by resistance VI with transformer in photoelectrical coupler II outside.
As preferably, described photoelectrical coupler I is MOC3020 photoelectrical coupler, and described photoelectrical coupler II is PC817 photoelectrical coupler.
Meanwhile, present invention also offers a kind of massage bed, described massage bed has vibrations motor, and the amplitude of vibration control method of described vibrations motor adopts interchange vibrations motor amplitude of vibration control method described above.
Present invention also offers a kind of massage bed, described massage bed has vibrations motor, and described vibrations motor controls work by control circuit, and described control circuit adopts control circuit described above.
Beneficial effect:
Interchange vibrations motor amplitude of vibration control method, control circuit and massage bed that the present invention adopts technique scheme to provide, vibrations time, vibration amplitude control good, and result of use is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the oscillogram of alternating current one-period;
Fig. 3 is the schematic diagram of the embodiment of the present invention two.
Embodiment
Embodiment one:
Be illustrated in figure 1 in the present invention a kind of embodiment exchanging vibrations motor 5 control circuit, control circuit comprises single-chip microcomputer 1 and vibrations motor 5, single-chip microcomputer 1, connected by circuit I between vibrations motor 5, vibrations motor 5 one end is connected with the node I 51 be connected with AC-powered end, single-chip microcomputer 1 has I/O pin and PWM pin, circuit I comprises NPN type triode 2, photoelectrical coupler I 3, bidirectional thyristor 4, photoelectrical coupler II 6 and transformer 7, NPN type triode 2 has base stage, emitter and collector, bidirectional thyristor 4 has G pole, T1 pole and T2 pole, be connected between the base stage of NPN type triode 2 and the I/O pin of single-chip microcomputer 1, grounded emitter, photoelectrical coupler I 3 inside has light-emitting component I and photo-sensitive cell I, photoelectrical coupler I 3 has the first pin I 31, first pin II 32, first pin III 33 and the first pin IV 34, first pin I 31 is connected with the positive pole of light-emitting component I in photoelectrical coupler I 3 inside, first pin II 32 is connected with the negative pole of light-emitting component I in photoelectrical coupler I 3 inside, first pin I 31 is connected with+5V feeder ear in photoelectrical coupler I 3 outside, first pin II 32 is connected with the collector of NPN type triode 2 in photoelectrical coupler I 3 outside, first pin III 33 is connected with one end of photo-sensitive cell I in photoelectrical coupler I 3 inside, first pin IV 34 is connected with the other end of photo-sensitive cell I in photoelectrical coupler I 3 inside, first pin III 33 is outside and vibrations motor 5 other end at photoelectrical coupler I 3, the T1 pole of bidirectional thyristor 4 connects, first pin IV 34 is connected with the G pole of bidirectional thyristor 4 in photoelectrical coupler I 3 outside, the T2 pole of bidirectional thyristor 4 is connected with the node II 41 be connected with AC-powered end, photoelectrical coupler II 6 inside has light-emitting component II and photo-sensitive cell II, photoelectrical coupler II 6 has the second pin I 61, second pin II 62, second pin III 63 and the second pin IV 64, second pin I 61 is connected with the positive pole of light-emitting component II in photoelectrical coupler II 6 inside, second pin II 62 is connected with the negative pole of light-emitting component II in photoelectrical coupler II 6 inside, second pin I 61 is connected with transformer 7 in photoelectrical coupler II 6 outside, second pin II 62 is connected with transformer 7 in photoelectrical coupler II 6 outside, second pin III 63 is connected with+5V feeder ear in photoelectrical coupler II 6 outside, second pin IV 64 is connected with resistance VII R7 one end in photoelectrical coupler II 6 outside, the PWM pin of single-chip microcomputer 1 is connected with resistance VII R7 one end, resistance VII R7 other end ground connection.
In the present embodiment, be connected by resistance I R1 between the base stage of NPN type triode 2 and the I/O pin of single-chip microcomputer 1, the collector of NPN type triode 2 is connected with+5V feeder ear by resistance II R2, first pin I 31 is connected by resistance III R3 with+5V feeder ear in photoelectrical coupler I 3 outside, first pin III 33 is contact resistance IV R4 successively in photoelectrical coupler I 3 outside, with vibrations motor 5 other end after resistance V R5, the T1 pole of bidirectional thyristor 4 connects, control circuit also comprises electric capacity I C1 and electric capacity II C2, one end of electric capacity I C1 is connected between resistance IV R4 and resistance V R5, the other end is connected with the T2 pole of bidirectional thyristor 4, one end of electric capacity II C2 is connected with the T1 pole of bidirectional thyristor 4, the other end is connected with node I 51, second pin II 62 is connected by resistance VI P6 with transformer 7 in photoelectrical coupler II 6 outside, single-chip microcomputer has the timer I for detecting ac frequency and the timer II for controlling the service time shaking motor, there is in single-chip microcomputer the module catching and calculate ac frequency, photoelectrical coupler I 3 is MOC3020 photoelectrical coupler, photoelectrical coupler II 6 is PC817 photoelectrical coupler.
In the present embodiment, by being equipped with 2 timers in single-chip microcomputer---for detecting the timer I of ac frequency and the timer II for controlling the service time shaking motor, thus indirectly control amplitude and the vibration frequency of alternating current motor vibrations.
Wherein, exchange vibrations motor amplitude of vibration control method to comprise the following steps:
Step one, by integer and filtering circuit, ac signal is converted into continuous print low and high level signal and is input to single-chip microcomputer;
Step 2, single-chip microcomputer calculate wherein one section of low level time t by timer I
1with the time t of one section of high level
2, by t
1and t
2be added, obtain one and value;
Step 3, to repeat N time by step 2, obtain N number of and value, the N number of and maximal value in being worth of filtering and minimum value, then ask and to remain and the mean value of value obtains the cycle T of alternating current;
Step 4, single-chip microcomputer at least calculate alternating current in one-period T voltage from this cycle starting point to time t when there is M value
mwith from this cycle starting point to time t when there is N value
n, M, N can be the mxm., minimum, null value etc. of voltage;
Step 5, according to t
m, t
n, single-chip microcomputer controls the vibrations service time of motor in an ac period T by timer II.
Said method design concept is:
1, cross-species transferability: because the ac frequency of many countries is different, can the ac power supply of general different frequency in order to realize control system, in the MCU of single-chip microcomputer, and the specialized designs module of seizure and calculated rate.Concrete, regard alternating current as desirable sine wave, by integer and filtering circuit, ac signal is converted into continuous print low and high level signal and is input to single-chip microcomputer, wherein low level is sinusoidal wave lower semisection, and high level is sinusoidal wave upper semisection.Single-chip microcomputer, by timer I, calculates the time of low level and high level, the two addition is obtained one and value, N value and calculating according to the method described above, obtain N number of and value, filtering maximal value and minimum value, then ask the one-period T of mean value alternating current of residue and value.
2, about the control of amplitude of vibration: the waveform due to alternating current one-period is a sine wave, as shown in Figure 2, longitudinal axis U represents voltage, transverse axis T represents the time, O is the initial point of coordinate axis, wherein O, B, D are alternating current voltage value zero point, and A is the peak of alternating current voltage value, and C is the minimum point of alternating current voltage value.As previously described, can be caught by timer I and calculate the frequency of alternating current, meanwhile, according to low and high level change, can calculate with O point for starting point accurately, the time t of A, B, C, D tetra-points
a, t
b, t
c, t
d; When larger by the positive and negative magnitude of voltage of vibrations motor, the vibration amplitude of vibrations motor is larger.According to this principle, single-chip microcomputer is by timer II, and when being fixed near A and C point the service time of vibrations motor, vibrations motor vibration amplitude is maximum, and when being fixed near B and D point the service time of vibrations motor, vibrations motor vibration amplitude is minimum.According to above-mentioned principle, single-chip microcomputer by controlling the time point that vibrations motor is opened, can control the amplitude shaking motor.
3, about the control of vibration frequency: as mentioned above, single-chip microcomputer opens and cuts out the vibrations of vibrations motor by timer II, because the vibration frequency shaking motor is relevant with the vibrations number of times in unit period, therefore, can control to shake the vibrations number of times in motor unit period by timer II, thus realize the control of vibration frequency.
Embodiment two:
Massage bed, massage bed has vibrations motor 5, and vibrations motor 5 controls work by control circuit, and control circuit adopts the control circuit as described in embodiment one.As shown in Figure 3, by cable operator device 8 or radio operation device 9, open, stop shake motor; The amplitude of vibration enhancing controlling to shake motor by manipulater still weakens; After unlatching, can automatically close after vibrations motor operation certain hour.
In the present embodiment, massage bed shakes motor control and can be divided into 3 kinds, sharp pounding pattern, mitigation vibrating mode, interrupted oscillating pattern, the control principle of sharp pounding pattern is strong amplitude, high-frequency, brings strong vibratory sensation to user; The control principle relaxing vibrating mode is short arc, and high-frequency, brings the vibratory sensation of mitigation to user; The control principle of interrupted oscillating pattern is strong amplitude, low frequency, brings the vibratory sensation of interval to user.In the present embodiment, the vibrations time, vibration amplitude, vibrating mode all can be selected according to the demand of client, really achieves human oriented design, meets the request for utilization of mostly client; Introduce wireless remote control, user can select suitable vibration mode according to demand in a big way.
Embodiment three:
The difference of the present embodiment and embodiment two is, the vibrations motor 5 of massage bed only adopts the interchange vibrations motor amplitude of vibration control method in embodiment one, namely by being equipped with 2 timers in single-chip microcomputer---for detecting the timer I of ac frequency and the timer II for controlling the service time shaking motor, thus indirectly control amplitude and the vibration frequency of alternating current motor vibrations.
Wherein, exchange vibrations motor amplitude of vibration control method to comprise the following steps:
Step one, by integer and filtering circuit, ac signal is converted into continuous print low and high level signal and is input to single-chip microcomputer;
Step 2, single-chip microcomputer calculate wherein one section of low level time t by timer I
1with the time t of one section of high level
2, by t
1and t
2be added, obtain one and value;
Step 3, to repeat N time by step 2, obtain N number of and value, the N number of and maximal value in being worth of filtering and minimum value, then ask and to remain and the mean value of value obtains the cycle T of alternating current;
Step 4, single-chip microcomputer at least calculate alternating current in one-period T voltage from this cycle starting point to time t when there is M value
mwith from this cycle starting point to time t when there is N value
n, M, N can be the mxm., minimum, null value etc. of voltage;
Step 5, according to t
m, t
n, single-chip microcomputer controls the vibrations service time of motor in an ac period T by timer II.
Claims (10)
1. exchange vibrations motor amplitude of vibration control method, it is characterized in that, comprise the following steps:
Step one, by integer and filtering circuit, ac signal is converted into continuous print low and high level signal and is input to single-chip microcomputer;
Step 2, single-chip microcomputer calculate wherein one section of low level time t by timer I
1with the time t of one section of high level
2, by t
1and t
2be added, obtain one and value;
Step 3, to repeat N time by step 2, obtain N number of and value, the N number of and maximal value in being worth of filtering and minimum value, then ask and to remain and the mean value of value obtains the cycle T of alternating current;
Step 4, single-chip microcomputer at least calculate alternating current in one-period T voltage from this cycle starting point to time t when there is M value
mwith from this cycle starting point to time t when there is N value
n;
Step 5, according to t
m, t
n, single-chip microcomputer controls the vibrations service time of motor in an ac period T by timer II.
2. interchange vibrations motor amplitude of vibration control method according to claim 1, is characterized in that: single-chip microcomputer controls the vibrations number of times of vibrations motor in the unit period of alternating current by timer II.
3. control circuit, comprise single-chip microcomputer (1) and vibrations motor (5), connected by circuit I between described single-chip microcomputer (1), vibrations motor (5), it is characterized in that: described vibrations motor amplitude of vibration control method adopts as claimed in claim 1 or 2 interchange to shake motor amplitude of vibration control method.
4. control circuit according to claim 3, it is characterized in that: described vibrations motor (5) one end is connected with the node I (51) be connected with AC-powered end, described single-chip microcomputer (1) has I/O pin and PWM pin, described circuit I comprises NPN type triode (2), photoelectrical coupler I (3), bidirectional thyristor (4), photoelectrical coupler II (6) and transformer (7), described NPN type triode (2) has base stage, emitter and collector, described bidirectional thyristor (4) has G pole, T1 pole and T2 pole, the base stage of described NPN type triode (2) is connected with between the I/O pin of single-chip microcomputer (1), grounded emitter, described photoelectrical coupler I (3) inside has light-emitting component I and photo-sensitive cell I, described photoelectrical coupler I (3) has the first pin I (31), first pin II (32), first pin III (33) and the first pin IV (34), described first pin I (31) is connected with the positive pole of light-emitting component I in photoelectrical coupler I (3) inside, first pin II (32) is connected with the negative pole of light-emitting component I in photoelectrical coupler I (3) inside, described first pin I (31) is connected with+5V feeder ear in photoelectrical coupler I (3) outside, first pin II (32) is connected with the collector of NPN type triode (2) in photoelectrical coupler I (3) outside, described first pin III (33) is connected with one end of photo-sensitive cell I in photoelectrical coupler I (3) inside, first pin IV (34) is connected with the other end of photo-sensitive cell I in photoelectrical coupler I (3) inside, described first pin III (33) is outside and vibrations motor (5) other end at photoelectrical coupler I (3), the T1 pole of bidirectional thyristor (4) connects, described first pin IV (34) is connected with the G pole of bidirectional thyristor (4) in photoelectrical coupler I (3) outside, the T2 pole of described bidirectional thyristor (4) is connected with the node II (41) be connected with AC-powered end, described photoelectrical coupler II (6) inside has light-emitting component II and photo-sensitive cell II, described photoelectrical coupler II (6) has the second pin I (61), second pin II (62), second pin III (63) and the second pin IV (64), described second pin I (61) is connected with the positive pole of light-emitting component II in photoelectrical coupler II (6) inside, second pin II (62) is connected with the negative pole of light-emitting component II in photoelectrical coupler II (6) inside, described second pin I (61) is connected with transformer (7) in photoelectrical coupler II (6) outside, second pin II (62) is connected with transformer (7) in photoelectrical coupler II (6) outside, described second pin III (63) is connected with+5V feeder ear in photoelectrical coupler II (6) outside, second pin IV (64) is connected with resistance VII (R7) one end in photoelectrical coupler II (6) outside, the PWM pin of described single-chip microcomputer (1) is connected with resistance VII (R7) one end, described resistance VII (R7) other end ground connection.
5. control circuit according to claim 4, it is characterized in that: be connected by resistance I (R1) between the base stage of described NPN type triode (2) and the I/O pin of single-chip microcomputer (1), the collector of described NPN type triode (2) is connected with+5V feeder ear by resistance II (R2).
6. control circuit according to claim 4, is characterized in that: described first pin I (31) is connected by resistance III (R3) with+5V feeder ear in photoelectrical coupler I (3) outside.
7. control circuit according to claim 4, is characterized in that: described first pin III (33) is connected with the T1 pole of vibrations motor (5) other end, bidirectional thyristor (4) afterwards at photoelectrical coupler I (3) outside successively contact resistance IV (R4), resistance V (R5).
8. control circuit according to claim 7, it is characterized in that: described control circuit also comprises electric capacity I (C1) and electric capacity II (C2), one end of described electric capacity I (C1) is connected between resistance IV (R4) and resistance V (R5), the other end is connected with the T2 pole of bidirectional thyristor (4), and one end of described electric capacity II (C2) is connected with the T1 pole of bidirectional thyristor (4), the other end is connected with node I (51).
9. massage bed, described massage bed has vibrations motor (5), it is characterized in that: the amplitude of vibration control method of described vibrations motor adopts as claimed in claim 1 or 2 interchange to shake motor amplitude of vibration control method.
10. massage bed, described massage bed has vibrations motor (5), and described vibrations motor (5) controls work by control circuit, it is characterized in that: the control circuit as described in described control circuit employing is as arbitrary in claim 3 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055419.1A CN104765299B (en) | 2015-02-03 | 2015-02-03 | Exchange vibrations motor amplitude of vibration control method and control circuit and massage bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055419.1A CN104765299B (en) | 2015-02-03 | 2015-02-03 | Exchange vibrations motor amplitude of vibration control method and control circuit and massage bed |
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| CN104765299B CN104765299B (en) | 2018-03-20 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0723593A (en) * | 1993-06-30 | 1995-01-24 | Syst Hoomuzu:Kk | Frequency converter |
| CN1450341A (en) * | 2003-04-22 | 2003-10-22 | 上海大学 | Method for detecting industrial frequency ac electric period change |
| CN2919261Y (en) * | 2006-03-15 | 2007-07-04 | 宋益群 | AC current and voltage measuring circuit adopting AC sampling |
| CN101075129A (en) * | 2006-05-16 | 2007-11-21 | 新昌县捷昌医疗设备有限公司 | Intelligent driven controlling system |
| CN102062810A (en) * | 2010-12-14 | 2011-05-18 | 江苏大学 | Detection circuit and method for zero crossing point of alternating current power supply |
| CN201945894U (en) * | 2011-01-27 | 2011-08-24 | 上海西门子医疗器械有限公司 | Pressure control circuit of compressor and X-ray machine |
| CN202489586U (en) * | 2012-03-15 | 2012-10-17 | 洪祯 | Intelligent vibrating bed |
| CN103852363A (en) * | 2014-03-14 | 2014-06-11 | 中国地质大学（武汉） | Frequency and amplitude adjustable mud sample vibration device |
-
2015
- 2015-02-03 CN CN201510055419.1A patent/CN104765299B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0723593A (en) * | 1993-06-30 | 1995-01-24 | Syst Hoomuzu:Kk | Frequency converter |
| CN1450341A (en) * | 2003-04-22 | 2003-10-22 | 上海大学 | Method for detecting industrial frequency ac electric period change |
| CN2919261Y (en) * | 2006-03-15 | 2007-07-04 | 宋益群 | AC current and voltage measuring circuit adopting AC sampling |
| CN101075129A (en) * | 2006-05-16 | 2007-11-21 | 新昌县捷昌医疗设备有限公司 | Intelligent driven controlling system |
| CN102062810A (en) * | 2010-12-14 | 2011-05-18 | 江苏大学 | Detection circuit and method for zero crossing point of alternating current power supply |
| CN201945894U (en) * | 2011-01-27 | 2011-08-24 | 上海西门子医疗器械有限公司 | Pressure control circuit of compressor and X-ray machine |
| CN202489586U (en) * | 2012-03-15 | 2012-10-17 | 洪祯 | Intelligent vibrating bed |
| CN103852363A (en) * | 2014-03-14 | 2014-06-11 | 中国地质大学（武汉） | Frequency and amplitude adjustable mud sample vibration device |
Non-Patent Citations (2)
| Title |
|---|
| 陆小健等: "基于Cortex-M3的电动医疗床驱动与控制系统", 《机电工程》 * |
| 韩迎辉: "电动按摩床的单片机控制系统", 《河南科技》 * |
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| Publication number | Publication date |
|---|---|
| CN104765299B (en) | 2018-03-20 |
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