CN215912083U - Pulse signal generating circuit - Google Patents
Pulse signal generating circuit Download PDFInfo
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- CN215912083U CN215912083U CN202121712740.XU CN202121712740U CN215912083U CN 215912083 U CN215912083 U CN 215912083U CN 202121712740 U CN202121712740 U CN 202121712740U CN 215912083 U CN215912083 U CN 215912083U
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Abstract
The utility model provides a pulse signal generating circuit, which solves the problems of large quantity of electronic components, large power consumption, large overall dimension and the like of the pulse signal generating circuit. The circuit comprises a pulse signal circuit unit and a load circuit unit; in the pulse signal circuit unit, two triodes are connected to form a first pulse signal circuit, and other triodes are connected in pairs to form N paths of second pulse signal circuits; in the first pulse signal circuit, an emitter of a triode Q1 is connected with VCC, an emitter of a triode Q2 is grounded, and a collector of a triode Q1 is connected with a collector of a triode Q2 to serve as an OUT1 end; in the second pulse signal circuit, an emitter of one triode is connected with VCC, an emitter of the other triode is grounded, and collectors of the two triodes are connected to serve as an OUT end; in the load circuit unit, one end of each of the N resistors R is connected to the OUT1, and the other end is connected to the OUT of each of the second pulse signal circuits in a one-to-one correspondence manner.
Description
Technical Field
The utility model relates to the field of neuromuscular electrical stimulation rehabilitation, in particular to a pulse signal generating circuit.
Background
At present, neuromuscular electrical stimulation equipment mainly generates pulse signals based on an H-bridge circuit, a processor generates positive and negative stimulation pulses by controlling the conduction and the cut-off of a triode in the H-bridge, and finally outputs bidirectional pulse signals. In the pulse signal generating circuit, 6 triodes are needed for generating a single-path pulse signal, 12 triodes are needed for generating a double-path pulse signal, and by analogy, N multiplied by 6 triodes are needed for generating N paths of pulse signals. Therefore, the pulse signal generating circuit in the existing neuromuscular electrical stimulation equipment has the defects of large quantity of electronic components, large power consumption, large overall dimension and no accordance with the requirements of portability and miniaturization.
Disclosure of Invention
The utility model provides a pulse signal generating circuit which has the characteristics of few used components, low power consumption, small overall dimension and the like and solves the problems of large quantity of used electronic components, large power consumption, large overall dimension and the like of the pulse signal generating circuit in the conventional neuromuscular electrical stimulation equipment.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pulse signal generating circuit includes a pulse signal circuit unit and a load circuit unit; the pulse signal circuit unit comprises M triodes, wherein M is Nx 2+2, N is the number of paths generated by pulse signals, N is more than or equal to 1, two triodes in the M triodes are connected to form a first pulse signal circuit, other triodes are connected in pairs to form N second pulse signal circuits, and the first pulse signal circuit and the N second pulse signal circuits form N H-bridge circuits respectively; the first pulse signal circuit comprises a triode Q1 and a triode Q2, an emitter of the triode Q1 is connected with VCC, an emitter of the triode Q2 is grounded, and a collector of the triode Q1 is connected with a collector of the triode Q2 to serve as an OUT1 end; in the second pulse signal circuit, an emitting electrode of one triode is connected with VCC, an emitting electrode of the other triode is grounded, and collecting electrodes of the two triodes are connected to be used as an OUT end; the load circuit unit comprises N resistors R, one ends of the N resistors R are connected with the OUT1 end, and the other ends of the N resistors R are respectively connected with the OUT ends of the N second pulse signal circuits in a one-to-one correspondence mode.
Further, the transistor Q1 is a PNP transistor, the transistor Q2 is an NPN transistor, and the second pulse signal circuit includes a PNP transistor and an NPN transistor.
Furthermore, the base electrodes of the triodes in the pulse signal circuit unit are connected with GPIO of the ARM or the MCU.
Further, the resistance values of the resistors R are all 500 omega.
Compared with the prior art, the utility model has the following beneficial effects:
the pulse signal generating circuit is strong in universality, is suitable for most of neuromuscular electrical stimulation equipment on the market, is few in circuit components, low in power consumption and small in overall dimension, effectively improves the wearability and portability of the neuromuscular electrical stimulation equipment, and reduces the power consumption and the overall dimension of the equipment.
Drawings
FIG. 1 is a schematic diagram of a pulse signal generating circuit of the present invention;
FIG. 2 is a schematic diagram of a pulse signal generating circuit for generating a single-channel pulse signal according to the present invention;
FIG. 3 is a schematic diagram of a pulse signal generating circuit for generating two-way pulse signals according to the present invention;
FIG. 4 is a schematic diagram of a pulse signal generating circuit for generating three-way pulse signals according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention and are not intended to limit the scope of the present invention.
The utility model provides a pulse signal generating circuit which is strong in universality, is suitable for most of neuromuscular electrical stimulation equipment on the market, has few components, low power consumption and small overall dimension, effectively improves the wearability and portability of the neuromuscular electrical stimulation equipment, and reduces the power consumption and the overall dimension of the equipment.
The pulse signal generating circuit comprises a pulse signal circuit unit and a load circuit unit; the pulse signal circuit unit comprises M triodes, wherein M is Nx 2+2, N is the number of paths generated by pulse signals, N is more than or equal to 1, two triodes are connected to form a first pulse signal circuit in the M triodes, other triodes are connected in a group of two by two to form N second pulse signal circuits, and the first pulse signal circuit and the N second pulse signal circuits form N H bridge circuits respectively. Specifically, the first pulse signal circuit comprises a triode Q1 and a triode Q2, wherein an emitter of the triode Q1 is connected with VCC, an emitter of the triode Q2 is grounded, and a collector of the triode Q1 is connected with a collector of the triode Q2 to serve as an OUT1 end; in the second pulse signal circuit, an emitter of one triode is connected with VCC, an emitter of the other triode is grounded, and collectors of the two triodes are connected to be used as an OUT end; the load circuit unit comprises N resistors R, one ends of the N resistors R are connected with the OUT1 end, and the other ends of the N resistors R are respectively connected with the OUT ends of the N second pulse signal circuits in a one-to-one correspondence mode. The transistor Q1 is a PNP transistor, the transistor Q2 is an NPN transistor, and the second pulse signal circuit includes a PNP transistor and an NPN transistor. The resistance values of the resistors R are all 500 omega.
As shown in fig. 1, the pulse signal generating circuit of the present invention uses an H-bridge circuit, and the GPIO of the ARM or MCU outputs high and low level signals to the bases of 4 transistors in the H-bridge circuit to control the conduction or the cutoff of a pair of transistors on a diagonal line, and according to the conduction and the cutoff of different transistor pairs, current flows from the collectors of the two left transistors to the collectors of the two right transistors through a load, or current flows from the collectors of the two right transistors to the collectors of the two left transistors through a load, thereby generating a positive or negative pulse signal. A one-way pulse signal is generated, and 1H-bridge circuit, namely 4 triodes, is used. Two or more than two paths of pulse signals are generated, two triodes on the left side or two triodes on the right side in 1H bridge circuit are shared, namely N paths of pulse signals are generated, and (Nx 2+2) triodes are needed, so that the circuit components are few, the power consumption is low, the overall dimension is small, the wearability and the portability of the neuromuscular electrical stimulation device are effectively improved, and the power consumption and the overall dimension of the device are reduced.
Example one
As shown in fig. 2, the pulse signal generating circuit provided by the present invention can generate a single-channel pulse signal, and at this time, the pulse signal generating circuit includes a pulse signal circuit unit and a load circuit unit; the pulse signal circuit unit comprises four triodes, the four triodes form an H-bridge circuit, the H-bridge circuit comprises a triode Q1, a triode Q2, a triode Q3 and a triode Q4, the triode Q1 is connected with the triode Q2, an emitter of the triode Q1 is connected with VCC, an emitter of the triode Q2 is grounded, a collector of the triode Q1 is connected with a collector of the triode Q2 to serve as an OUT1 end, the triode Q3 is connected with the triode Q4, an emitter of the triode Q3 is connected with VCC, an emitter of the triode Q4 is grounded, a collector of the triode Q3 is connected with a collector of the triode Q4 to serve as an OUT2 end; the load circuit unit comprises a resistor R1, and two ends of the resistor R1 are respectively connected with an OUT1 end and an OUT2 end.
In the circuit, a triode Q1, a triode Q2, a triode Q3 and a triode Q4 form an H-bridge circuit which is used for receiving high and low level signals output by an ARM or MCU (microprogrammed control Unit) and enabling a pair of triodes on the diagonal line of the H-bridge circuit to be switched on or switched off. One end of the load circuit unit is connected with the collector electrodes of the two triodes on the left side of the H bridge, and the other end of the load circuit unit is connected with the collector electrodes of the two triodes on the right side of the H bridge. The current is loaded from the collector electrodes of the two triodes on the left side to the collector electrodes of the two triodes on the right side, and a forward pulse signal is generated. And current is loaded from the collector electrodes of the two triodes on the right to the collector electrodes of the two triodes on the left, so that a negative pulse signal is generated. Therefore, two pairs of triodes on the diagonal line of the H-bridge circuit unit are controlled to be alternately switched on or switched off, and a bidirectional pulse signal can be generated.
In the present embodiment, when the PH1 signal is a pulse signal, PL1 is low, PH2 is high, and PL2 is high, Q1 is switched between on and off, Q2 and Q3 are off, Q4 is on, and the pulse signal flows from OUT1 to OUT2 through load R1, which defines the direction as a positive direction. When the PH2 signal is a pulse signal, PL2 is low, PH1 is high, and PL1 is high, Q3 is switched on and off, Q1 and Q4 are off, Q2 is on, and the pulse signal flows from OUT2 to OUT1 through load R1, defining this direction as negative. The pulse signal flows from the OUT1 to the OUT2 through the load R1, and then flows from the OUT2 to the OUT1 through the load R1, and the two-way pulse signal can be generated by periodically switching.
Example two
As shown in fig. 3, the pulse signal generating circuit provided by the present invention can generate a two-way pulse signal, and the pulse signal generating circuit includes a pulse signal circuit unit and a load circuit unit; the pulse signal circuit unit comprises 6 triodes, the first pulse signal circuit comprises a triode Q1 and a triode Q2, a triode Q1 is connected with a triode Q2, an emitting electrode of the triode Q1 is connected with VCC, an emitting electrode of the triode Q2 is grounded, and a collecting electrode of the triode Q1 is connected with a collecting electrode of the triode Q2 to serve as an OUT1 end.
The second pulse signal circuit is two paths and is formed by connecting a triode Q3 with a triode Q4, and connecting a triode Q5 with a triode Q6 respectively, wherein an emitting electrode of the triode Q3 is connected with VCC, an emitting electrode of the triode Q4 is grounded, and a collecting electrode of the triode Q3 is connected with a collecting electrode of the triode Q4 and serves as an OUT2 end. The emitter of the transistor Q5 is connected to VCC, the emitter of the transistor Q6 is grounded, and the collector of the transistor Q5 is connected to the collector of the transistor Q6 as the OUT3 terminal. The load circuit unit is used for connecting the two triodes on the left side and the two triodes on the right side of the H-bridge circuit to form a current loop and specifically comprises a resistor R1 and a resistor R2, two ends of the resistor R1 are respectively connected with an OUT1 end and an OUT2 end, one end of the resistor R2 is connected with an OUT1 end, and the other end of the resistor R2 is connected with an OUT3 end.
In the circuit, triodes Q1, Q2, Q3 and Q4 or Q1, Q2, Q5 and Q6 form an H-bridge circuit, and the H-bridge circuit is used for receiving high and low level signals output by an ARM or MCU (microprogrammed control unit) and enabling a pair of triodes on a diagonal line of the H-bridge circuit to be switched on or switched off. In the load circuit unit, one end of a resistor is connected with the collector electrodes of the two triodes on the left side of the H bridge, and the other end of the resistor is connected with the collector electrodes of the two triodes on the right side of the H bridge. The current is loaded from the collector electrodes of the two triodes on the left side to the collector electrodes of the two triodes on the right side, and a forward pulse signal is generated. And current is loaded from the collector electrodes of the two triodes on the right to the collector electrodes of the two triodes on the left, so that a negative pulse signal is generated. Therefore, two pairs of triodes on the diagonal line of the H-bridge circuit unit are controlled to be alternately switched on or switched off, and a bidirectional pulse signal can be generated.
In the present embodiment, when the PH1 signal is a pulse signal, PL1 is low, PH2 is high, and PL2 is high, Q1 is switched between on and off, Q2 and Q3 are off, Q4 is on, and the pulse signal flows from OUT1 to OUT2 through load R1, which defines the direction as a positive direction. When the PH2 signal is a pulse signal, PL2 is low, PH1 is high, and PL1 is high, Q3 is switched on and off, Q1 and Q4 are off, Q2 is on, and the pulse signal flows from OUT2 to OUT1 through load R1, defining this direction as negative. The pulse signal flows from the OUT1 to the OUT2 through the load R1, and then flows from the OUT2 to the OUT1 through the load R1, and the bidirectional pulse signal 1 can be generated by periodically switching. Similarly, a pulse signal flows from the OUT1 to the OUT3 through the load R2, and then flows from the OUT3 to the OUT1 through the load R2, and the pulse signal is periodically switched to generate the bidirectional pulse signal 2.
EXAMPLE III
As shown in fig. 4, the pulse signal generating circuit provided by the present invention can generate three-way pulse signals, and the pulse signal generating circuit includes a pulse signal circuit unit and a load circuit unit; the pulse signal circuit unit comprises 8 triodes, the first pulse signal circuit comprises a triode Q1 and a triode Q2, a triode Q1 is connected with a triode Q2, an emitting electrode of the triode Q1 is connected with VCC, an emitting electrode of the triode Q2 is grounded, and a collecting electrode of the triode Q1 is connected with a collecting electrode of the triode Q2 to serve as an OUT1 end.
The second pulse signal circuit is three paths and is formed by connecting a triode Q3 with a triode Q4, a triode Q5 with a triode Q6, a triode Q7 with a triode Q8, an emitter of the triode Q3 is connected with VCC, an emitter of the triode Q4 is grounded, and a collector of the triode Q3 is connected with a collector of the triode Q4 to serve as an OUT2 end; an emitter of the triode Q5 is connected with VCC, an emitter of the triode Q6 is grounded, and a collector of the triode Q5 is connected with a collector of the triode Q6 and serves as an OUT3 end; the emitter of the transistor Q7 is connected to VCC, the emitter of the transistor Q8 is grounded, and the collector of the transistor Q7 is connected to the collector of the transistor Q8 as the OUT4 terminal. The load circuit unit is used for connecting two triodes on the left side and two triodes on the right side of the H bridge circuit to form a current loop and specifically comprises a resistor R1, a resistor R2 and a resistor R3, two ends of the resistor R1 are respectively connected with an OUT1 end and an OUT2 end, one end of the resistor R2 is connected with an OUT1 end, the other end of the resistor R2 is connected with an OUT3 end, one end of the resistor R3 is connected with an OUT1 end, and the other end of the resistor R3 is connected with an OUT4 end.
The working principle of the circuit is the same as that of the circuit in the second embodiment, and the triodes Q1, Q2, Q3 and Q4 or Q1, Q2, Q5 and Q6 or Q1, Q2, Q7 and Q8 form an H-bridge circuit, and the H-bridge circuit is used for receiving high and low level signals output by the ARM or the MCU to enable a pair of triodes on the diagonal line of the H-bridge circuit to be switched on or switched off. The current is loaded from the collector electrodes of the two triodes on the left side to the collector electrodes of the two triodes on the right side, and a forward pulse signal is generated. The current is loaded from the collector electrodes of the two triodes on the right side to the collector electrodes of the two triodes on the left side to generate a negative pulse signal, so that the two pairs of triodes on the diagonal line of the H-bridge circuit unit are controlled to be alternately switched on or switched off to generate a bidirectional pulse signal. The circuit of the utility model generates N paths of pulse signals, and needs to use (Nx 2+2) triodes. (Nx 2+2) < (Nx 6). Therefore, the required triodes are small in number, low in power consumption and small in size of the circuit board, and the aims of improving the wearability and portability of the neuromuscular electrical stimulation device and reducing the power consumption and the overall dimension of the device are fulfilled.
Claims (4)
1. A pulse signal generating circuit characterized by: the pulse signal circuit unit and the load circuit unit are included;
the pulse signal circuit unit comprises M triodes, wherein M is Nx 2+2, N is the number of paths generated by pulse signals, N is more than or equal to 1, two triodes in the M triodes are connected to form a first pulse signal circuit, other triodes are connected in pairs to form N second pulse signal circuits, and the first pulse signal circuit and the N second pulse signal circuits form N H-bridge circuits respectively;
the first pulse signal circuit comprises a triode Q1 and a triode Q2, an emitter of the triode Q1 is connected with VCC, an emitter of the triode Q2 is grounded, and a collector of the triode Q1 is connected with a collector of the triode Q2 to serve as an OUT1 end;
in the second pulse signal circuit, an emitter of one triode is connected with VCC, an emitter of the other triode is grounded, and collectors of the two triodes are connected to serve as an OUT end;
the load circuit unit comprises N resistors R, one ends of the N resistors R are connected with the OUT1 end, and the other ends of the N resistors R are respectively connected with the OUT ends of the N second pulse signal circuits in a one-to-one correspondence mode.
2. The pulse signal generation circuit according to claim 1, characterized in that: the triode Q1 is a PNP type triode, the triode Q2 is an NPN type triode, and the second pulse signal circuit comprises a PNP type triode and an NPN type triode.
3. The pulse signal generation circuit according to claim 1 or 2, characterized in that: in the pulse signal circuit unit, the base electrodes of the triodes are connected with GPIO of the ARM or the MCU.
4. The pulse signal generation circuit according to claim 3, characterized in that: the resistance values of the resistors R are all 500 omega.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121712740.XU CN215912083U (en) | 2021-07-26 | 2021-07-26 | Pulse signal generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121712740.XU CN215912083U (en) | 2021-07-26 | 2021-07-26 | Pulse signal generating circuit |
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| Publication Number | Publication Date |
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| CN215912083U true CN215912083U (en) | 2022-02-25 |
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| CN202121712740.XU Active CN215912083U (en) | 2021-07-26 | 2021-07-26 | Pulse signal generating circuit |
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- 2021-07-26 CN CN202121712740.XU patent/CN215912083U/en active Active
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