Purpose of the present invention is to provide a kind of fully automatic midwifery instrument, in the process of whole childbirth, carries out electric pulse stimulation by the particular acupoint to human body, reaches to expand the palace practise midwifery, shortens the purpose of duration of labor.
The present invention is achieved in that by automatic control signal of telecommunication circuit, amplification output circuit, power circuit and constitutes, the outfan of automatic control signal of telecommunication circuit is connected with the input of amplification output circuit, power circuit is to automatic control signal of telecommunication circuit, amplification output circuit power supply, and voltage is treated in the outfan output of amplification output circuit.
What the present invention was concrete can realize in the following manner: be made of power circuit, self-timing operating circuit, electrical signal generating circuit, self-timing modulation circuit, amplification output circuit, the self-timing operating circuit has a plurality of terminals, be connected with the input of electrical signal generating circuit, the input of self-timing modulation circuit, the terminals of amplification output circuit respectively, the outfan of electrical signal generating circuit, self-timing modulation circuit is connected with the input of amplification output circuit.Automatically in the modulation circuit, can draw a plurality of outfans,, thereby realize multichannel output respectively with the input of a plurality of amplification output circuits and connect.The frequency range of output voltage is 5~200 hertz.
What the present invention was concrete also can realize in the following manner: be made of power circuit, single chip circuit, D/A change-over circuit, amplification output circuit, power circuit is connected with the voltage input end of single chip circuit, amplifying circuit, the outfan of single chip circuit is connected with the input of D/A change-over circuit, the outfan of D/A change-over circuit is connected with the input of amplifying circuit, the outfan output treatment voltage of amplifying circuit.
The present invention is novel, can realize the Automatic Control of therapeutic process, effectively alleviates medical worker and patient's burden.
As shown in Figure 1, the present invention is made of power circuit, self-timing operating circuit, electrical signal generating circuit, self-timing modulation circuit, amplification output circuit, the self-timing operating circuit has a plurality of terminals, be connected with the input of electrical signal generating circuit, the input of self-timing modulation circuit, the terminals of amplification output circuit respectively, the outfan of electrical signal generating circuit, self-timing modulation circuit is connected with the input of amplification output circuit.As Fig. 2, automatically in the modulation circuit, can draw a plurality of outfans, respectively with the input of a plurality of amplification output circuits and connect, thereby realize multichannel output.
As shown in Figure 3, power circuit is formed by connecting by transformator and bridge rectifier, at bridge rectifier (D
1~D
4) the commutating voltage of 12~18 volts of outfan outputs, the outfan of rectification circuit is connected with the input of self-timing operating circuit, the self-timing operating circuit is by chip IC
1, electric capacity, resistance, diode, audion, manostat (7805,7808), switch (Kn, Kn ') is formed by connecting chip (IC
1) foot (3a) outer meeting resistance and audion (T
2), audion (T
2) emitter-base bandgap grading meet audion (T
1) base stage, audion (T
2) colelctor electrode and audion (T
1) colelctor electrode and connect the back with diode (D
5) negative pole connect diode (D
5) positive pole connect audion (T with the positive voltage output end of rectification circuit
1) emitter-base bandgap grading be connected to stabilivolt (7808), draw terminals (A) from stabilivolt (7808), stabilivolt (7805) one ends are connected with the positive voltage output end of rectification circuit, the other end is terminals (B), timer chip (IC
1) foot (4a, 8a) be connected with the positive voltage output end of rectification circuit, foot (6a, 7a) and receive on the shunt circuit (a) that resistance, capacitance series constitutes, foot (2a) and receive resistance, (Kn is Kn) on the shunt circuit (b) that serial connection constitutes for switch, shunt circuit (a) and shunt circuit (b) are all and receive the input of self-timing operating circuit, on the positive voltage input of self-timing operating circuit, be provided with terminals (b12, b13); Electrical signal generating circuit is by chip (IC
3) and the side circuit be formed by connecting chip (IC
3) leading foot (8c 4c) and connect the back as input (B '), is connected with the terminals (B) of self-timing operating circuit, foot (1c, 2c, 5c, 6c, 7c) and resistance (R
6, R
7), electric capacity (C
6, C
7) connect and compose chip (IC
3) the side circuit, output pin (3c) is by resistance (R
13, R
25) be connected with the input of amplification output circuit; Automatically decide modulation circuit by chip (IC
2) and the amplitude modulator (C, C ') that connects and composes of side circuit, resistance, diode, audion be formed by connecting chip (IC
2) leading foot (8b 4b) and connect the back as input (A '), is connected with the terminals (A) of self-timing operating circuit, foot (1b, 2b, 5b, 6b, 7b) and diode, resistance, electric capacity connect and compose (IC
2) the side circuit, the input of the amplitude modulator (C, C ') that leading foot (3b) and resistance, diode, audion connect and compose also connects, in amplitude modulator (C), audion (T
3) base stage be connected with foot (3b) by resistance, colelctor electrode is by resistance and audion (T
4) base stage connect, emitter-base bandgap grading is connected with the outfan of electrical signal generating circuit by resistance, audion (T
4) colelctor electrode by resistance eutral grounding, its emitter-base bandgap grading is connected with the input of amplification output circuit as outfan, amplification output circuit is by audion (T
5, T
6), transformator connects and composes audion (T
5) base stage be connected audion (T as the outfan of input with the self-timing modulation circuit
5) emitter-base bandgap grading and audion (T
6) base stage connect audion (T
6) emitter-base bandgap grading by resistance eutral grounding, audion (T
6) colelctor electrode and audion (T
5) colelctor electrode and connect the back be connected with a simple end (B ' 12) of transformator, the simple other end (B12) of transformator is connected with the terminals (b12) of self-timing operating circuit, the secondary outfan as circuit of transformator, output treatment voltage, in amplitude modulator (C '), audion (T
7) base stage be connected with foot (3b) by resistance, colelctor electrode is by resistance and audion (T
8) base stage connect, emitter-base bandgap grading is connected with the outfan of electrical signal generating circuit by resistance, audion (T
8) colelctor electrode by resistance eutral grounding, its emitter-base bandgap grading is connected with the input of amplification output circuit as outfan, amplification output circuit is by audion (T
9, T
10), transformator connects and composes audion (T
9) base stage be connected audion (T as the outfan of input with the self-timing modulation circuit
9) emitter-base bandgap grading and audion (T
10) base stage connect audion (T
10) emitter-base bandgap grading by resistance eutral grounding, audion (T
10) colelctor electrode and audion (T
9) colelctor electrode and connect the back be connected with a simple end (B ' 13) of transformator, the simple other end (B13) of transformator is connected with the terminals (b13) of self-timing operating circuit, the secondary outfan as circuit of transformator, reference frequency output are 5~200 hertz treatment voltage; Like this, can realize treating the multichannel output of voltage.
As Fig. 4, what the present invention was concrete also can realize in the following manner: be made of power circuit, single chip circuit, D/A change-over circuit, amplification output circuit, power circuit is connected with the voltage input end of single chip circuit, amplifying circuit, the outfan of single chip circuit is connected with the input of D/A change-over circuit, the outfan of D/A change-over circuit is connected with the input of amplifying circuit, the outfan output treatment voltage of amplifying circuit.Above-mentioned power circuit, single chip circuit, D/A change-over circuit, amplification output circuit can adopt universal circuit to realize, make single chip circuit have automatic control generation electric impulse signal function, finish the work process of aforementioned self-timing operating circuit, electrical signal generating circuit, self-timing modulation circuit.