CN206801811U

CN206801811U - A kind of circuit that exchange pump speed is adjusted using zero passage detection

Info

Publication number: CN206801811U
Application number: CN201720521644.4U
Authority: CN
Inventors: 邢金国
Original assignee: Xing Hui Science And Technology Ltd Of Shenzhen
Current assignee: Xing Hui Science And Technology Ltd Of Shenzhen
Priority date: 2017-05-11
Filing date: 2017-05-11
Publication date: 2017-12-26
Anticipated expiration: 2027-05-11

Abstract

It the utility model is related to a kind of circuit that exchange pump speed is adjusted using zero passage detection, it includes exchanging input filter and protection circuit, alternating current zero-detection circuit, SCR control and filter circuit and air pump, the air pump is provided with interface, the exchange input filter and the input of protection circuit are with exchanging electrical connection, for power input, output end is connected to alternating current zero-detection circuit and SCR control and filter circuit, the interface of the air pump is connected between the exchange input filter and the output end and SCR control of protection circuit and the input of filter circuit.The utility model is novel in design, zeroaxial to detect to realize the function of the aeration speed using controllable silicon regulation AC air pump.

Description

A kind of circuit that exchange pump speed is adjusted using zero passage detection

Technical field

Physiotherapy class technical field of medical instruments is the utility model is related to, more particularly to a kind of adjusted using zero passage detection is exchanged The circuit of pump speed.

Background technology

Inflation class physical therapy apparatus currently on the market, a part are to use direct current air pump, and direct current is accessed by adjusting Dutycycle adjusts aeration speed, and uses the equipment of AC air pump largely can not all to adjust the speed of inflation, directly with after Electrical equipment or other electronic switches are switched on or off air pump.And the regulation of aeration speed is for the modality for inflating class And it is necessary, the patient of the different state of an illness and treatment rhythm can be so allowed to select most suitable treatment speed, to suffering from The rehabilitation of person and body-feeling are all helpful.

Applying for controllable silicon is widely used in household electrical appliances or exchange control field, and due to the characteristic of controllable silicon, random leads Logical and close to have civil power and once influence, the controllable silicon that many electronic equipments of in the market are used is typically all using carrying The optocoupler of zero point conducting controls controllable silicon, can so reduce the interference to civil power, but can not realize the function of regulation.

Utility model content

In view of this, there is provided a kind of circuit that exchange pump speed is adjusted using zero passage detection, realize the zero of detection alternating current Point, it is zeroaxial to detect to realize the function of the aeration speed using controllable silicon regulation AC air pump, again by circuit Design eliminates influence of the controllable silicon when turning on shut-off to civil power, and reaching can control air pump speed and can to solve interference civil power Purpose.

A kind of circuit that exchange pump speed is adjusted using zero passage detection, it includes exchanging input filter and protection circuit, friendship Stream electrical zero detection circuit, SCR control and filter circuit and air pump, the air pump are provided with interface, the exchange input filter Input with protection circuit is with exchanging electrical connection, and for power input, output end is connected to exchange electrical zero detection electricity Road and SCR control and filter circuit, the interface of the air pump are connected to the output of the exchange input filter and protection circuit Between end and SCR control and the input of filter circuit.

Further, exchange input filter and the protection circuit includes the sub- J1 of AC input, fuse F1, pressure-sensitive Resistance TVR1, common mode inductance L1, electric capacity C1 and electric capacity C2, the piezo-resistance TVR1, electric capacity C2, common mode inductance L1 and electric capacity C1 is parallel to AC input sub- J1, the fuse F1 and is series at AC input sub- J1 and piezo-resistance TVR1 successively Between.

Further, the alternating current zero-detection circuit includes resistance R7, resistance R8, resistance R9, resistance R10, two poles Pipe D1 and optocoupler U2, the resistance R9 and resistance R10 are connected in series in the electrode input end of the optocoupler U2, the resistance R7 It is parallel to the cathode output end of the optocoupler U2, the resistance R7 other ends connection power supply VCC respectively with resistance R8；The optocoupler U2 cathode output ends are grounded, and the diode D1 is parallel between the electrode input end and negative input of the optocoupler U2.

Further, the SCR control includes controllable silicon TRIAC1, resistance R1, resistance R2, resistance with filter circuit R3, resistance R4, resistance R5, resistance R6, electric capacity C3, electric capacity C4, optocoupler U1 and triode Q1, the resistance R4 connect with electric capacity C3 In parallel with controllable silicon TRIAC1 again, the resistance R3 connects with resistance R2 to be reconnected in the cathode output end of the optocoupler U1, institute The T1 poles for stating controllable silicon TRIAC1 are connected to the cathode output end of the optocoupler UI；The electrode input end of the optocoupler UI passes through electricity Resistance R1 is connected with power supply VCC, and the negative input of the optocoupler UI is connected with triode Q1 colelctor electrode, the triode Q1's Base stage is connected with resistance R5, and the grounded emitter of the triode Q1, the resistance R6 is connected to triode Q1 base stage and hair Between emitter-base bandgap grading.

Further, the air pump is AC air pump.

The beneficial effects of the utility model：The aeration speed of AC air pump is adjusted by the circuit, allow therapeutic equipment with Different aeration speed work, it can allow and the different state of an illness and treat the patient of rhythm to select most suitable treatment speed, allow trouble Person has more preferable body-feeling, being capable of early recovery.

Brief description of the drawings

Fig. 1 is a kind of circuit theory diagrams that exchange pump speed is adjusted using zero passage detection of the utility model embodiment.

Embodiment

The utility model is described in detail below with reference to specific embodiments and the drawings.

Referring to Fig. 1, showing a kind of circuit 10 that exchange pump speed is adjusted using zero passage detection, it includes exchange input filter Ripple is provided with protection circuit 20, alternating current zero-detection circuit 30, SCR control and filter circuit 40 and air pump, the air pump The input of interface 51, the exchange input filter and protection circuit 20 is with exchanging electrical connection, for power input, output end point Alternating current zero-detection circuit 30 and SCR control and filter circuit 40 are not connected to, and the air pump interface 51 is connected to described Exchange between input filter and the output end and SCR control of protection circuit 20 and the input of filter circuit 30.

Specifically, in the present embodiment, exchange input filter and the protection circuit 20 include the sub- J1 of AC input, Fuse F1, piezo-resistance TVR1, common mode inductance L1, electric capacity C1 and electric capacity C2, the piezo-resistance TVR1, electric capacity C2, it is total to Mould inductance L1 and electric capacity C1 is parallel to AC input sub- J1, the fuse F1 and is series at the sub- J1 of AC input successively Between piezo-resistance TVR1.

Specifically, electric capacity C1 and electric capacity C2 is DM EMI Absorption Capacitance, and common mode inductance L1 is used to absorb common mode disturbances, institute Stating exchange input filter and the effect of protection circuit 20 is：Interference of the civil power to internal circuit is reduced, when overtension or electric current Whole circuit is protected when excessive, and absorbs internal SCR control and is done with common mode and differential mode caused by the break-make of filter circuit 30 Disturb.

Further, the alternating current zero-detection circuit 30 includes resistance R7, resistance R8, resistance R9, resistance R10, two Pole pipe D1 and optocoupler U2, the resistance R9 and resistance R10 are connected in series in the electrode input end of the optocoupler U2, the resistance R7 and resistance R8 is parallel to the cathode output end of the optocoupler U2, the resistance R7 other ends connection power supply VCC respectively；The light Coupling U2 cathode output ends are grounded, and the diode D1 is parallel between the electrode input end and negative input of the optocoupler U2.

Specifically, resistance R9 and resistance R10 effect are current limliting and decompression, prevent the electric current mistake by the optocoupler U2 Greatly, the effect of the diode D1 is the conducting that alternating current bears semiaxis, the effect of the optocoupler U2 be zero cross signal isolation and Transmit；Resistance R7 is pull-up resistor, and resistance R8 is current limiting safeguard resistor, when the positive axis of the just profound ripple of alternating current comes, electric current It is applied to by resistance R9, resistance R10 on optocoupler U2 light emitting diode, causes an optocoupler U2 other pole to turn on, the electricity Resistance R8 is connected to Zero test signals；It is detected when Zero test signals drag down, is exactly now the zero of alternating current positive axis Point signal, at the end of positive axis electric current is fast, optocoupler U2 light emitting diode cut-off, an optocoupler U2 other pole is caused also to be cut Only, Zero test signals, which are drawn high, is detected, and is exactly now the zero signal that alternating current bears semiaxis, so passes through this part electricity Road can checks the time that two zero points of just profound ripple arrive, and is prepared for the control of controllable silicon.

Further, the SCR control includes controllable silicon TRIAC1, resistance R1, resistance R2, electricity with filter circuit 40 Hinder R3, resistance R4, resistance R5, resistance R6, electric capacity C3, electric capacity C4, optocoupler U1 and triode Q1, the resistance R4 and electric capacity C3 string Connection is in parallel with controllable silicon TRIAC1 again, and the resistance R3 connects with resistance R2 to be reconnected in the cathode output end of the optocoupler U1, The T1 poles of the controllable silicon TRIAC1 are connected to the cathode output end of the optocoupler UI；The electrode input end of the optocoupler UI passes through Resistance R1 is connected with power supply VCC, and the negative input of the optocoupler UI is connected with triode Q1 colelctor electrode, the triode Q1 Base stage be connected with resistance R5, the grounded emitter of the triode Q1, the resistance R6 be connected to triode Q1 base stage with Between emitter stage.

Specifically, the resistance R5 is connected to Air pump signals, and the control of the controllable silicon TRIAC1 mainly passes through Air pump signals control optocoupler U1 conducting controls controllable silicon TRIAC1 conducting and cut-off, resistance R4 and electric capacity with cut-off C3 forms a RC absorbing circuit, for absorbing vibration caused by controllable silicon TRIAC1 on or off moments, prevents controllable Influences of the silicon TRIAC1 to external electrical network；Just turn on controllable silicon TRIAC1 at once when zero cross signal arrives, thus can be with Make the speed of air pump maximum, after detecting that zero cross signal is come, the delay component time turns on can and allows the speed of air pump again Reduce, when software set is delayed, to turn on the air pump speed of controllable silicon now again just most slow for 1/2 power frequency period, this delay time Length is exactly to control the speed of air pump speed, is so achieved that from most quickly to air pump speed regulation most at a slow speed.

Further, the air pump is AC air pump.

Above disclosed is only a kind of the utility model preferred embodiment, can not limit this practicality with this certainly New interest field, therefore the equivalent variations made according to the utility model claims, still belong to what the utility model was covered Scope.

Claims

1. a kind of circuit that exchange pump speed is adjusted using zero passage detection, it is characterised in that including exchange input filter and protection Circuit, alternating current zero-detection circuit, SCR control and filter circuit and air pump, the air pump are provided with interface, the exchange Input filter and the input of protection circuit are with exchanging electrical connection, and for power input, output end is connected to alternating current zero Point detection circuit and SCR control and filter circuit, the interface of the air pump are connected to the exchange input filter and protection electricity Between the output end and SCR control on road and the input of filter circuit.

2. the circuit of zero passage detection regulation exchange pump speed is utilized as claimed in claim 1, it is characterised in that the exchange is defeated Entering filtering and protection circuit includes the sub- J1 of AC input, fuse F1, piezo-resistance TVR1, common mode inductance L1, electric capacity C1 And electric capacity C2, the piezo-resistance TVR1, electric capacity C2, common mode inductance L1 and electric capacity C1 are parallel to AC input successively J1, the fuse F1 are series between AC input sub- J1 and piezo-resistance TVR1.

3. the circuit of zero passage detection regulation exchange pump speed is utilized as claimed in claim 1, it is characterised in that the alternating current Zero-detection circuit include resistance R7, resistance R8, resistance R9, resistance R10, diode D1 and optocoupler U2, the resistance R9 and Resistance R10 is connected in series in the electrode input end of the optocoupler U2, and the resistance R7 and resistance R8 are parallel to the optocoupler respectively U2 cathode output end, the resistance R7 other ends connection power supply VCC；The optocoupler U2 cathode output ends ground connection, two pole Pipe D1 is parallel between the electrode input end and negative input of the optocoupler U2.

4. the circuit of zero passage detection regulation exchange pump speed is utilized as claimed in claim 1, it is characterised in that the controllable silicon Control includes controllable silicon TRIAC1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity with filter circuit C3, electric capacity C4, optocoupler U1 and triode Q1, the resistance R4 connect again, the electricity in parallel with controllable silicon TRIAC1 with electric capacity C3 Resistance R3 connects to reconnect with resistance R2 is connected to institute in the cathode output end of the optocoupler U1, the T1 poles of the controllable silicon TRIAC1 State optocoupler UI cathode output end；The electrode input end of the optocoupler UI is connected by resistance R1 with power supply VCC, the optocoupler UI Negative input be connected with triode Q1 colelctor electrode, the base stage of the triode Q1 is connected with resistance R5, the triode Q1 grounded emitter, the resistance R6 are connected between triode Q1 base stage and emitter stage.

5. the circuit of zero passage detection regulation exchange pump speed is utilized as claimed in claim 1, it is characterised in that the air pump is AC air pump.