CN213689867U - High-frequency generator switch detection circuit - Google Patents
High-frequency generator switch detection circuit Download PDFInfo
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- CN213689867U CN213689867U CN202022191027.7U CN202022191027U CN213689867U CN 213689867 U CN213689867 U CN 213689867U CN 202022191027 U CN202022191027 U CN 202022191027U CN 213689867 U CN213689867 U CN 213689867U
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Abstract
The utility model discloses a high frequency generator switch detection circuitry, include: the output end of the key module is connected with the first input end of the comparator, the output end of the reference voltage module is connected with the second input end of the comparator, the output end of the comparator is connected with the input end of the main control module through the isolation circuit, and the output end of the power supply module is connected with the input end of the reference voltage module, the input end of the key module, the input end of the comparator and the input end of the isolation module through the transformer. The utility model discloses a transformer replaces DC-DC to keep apart power module, has practiced thrift the cost, uses the transformer can realize perpendicular overall arrangement with the opto-coupler on PCB in addition, practices thrift the overall arrangement space, does benefit to small volume lightweight design.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to high frequency generator switch detection circuitry.
Background
During use of the high frequency electrosurgical device, the high frequency generator (i.e., the host) needs to receive a key activation signal from the handle application end to inform the host user whether high frequency energy needs to be generated. If the host computer receives the excitation signal from the handle, the high-frequency energy is generated for cutting and coagulation in the operation, and if the excitation signal of the handle stops the host computer, the high-frequency energy is stopped being output, thereby avoiding unnecessary tissue damage and damage to the generator caused by long-time excitation. However, the application side of the hf generator (i.e., the electrodes and handle) must be floating isolated from the output for safety requirements and related standards. And the voltage generated by the high frequency generator is generally high and generally varies from 0 volt to several thousand volts. It is required that the key activation circuit of the high frequency generator must be in isolated communication with the low voltage control circuit. Since the key is isolated communication, the power supply of the key signal detection circuit must be isolated from the low-voltage control circuit so as to realize the overall isolation of the application terminal and the low-voltage control terminal.
In the prior art, the power supply of the key detection circuit uses a DC-DC isolation power supply module to supply power to the key detection circuit. The DC-DC isolation power supply module is expensive, and in addition, the DC-DC isolation power supply module is large in size and needs to be in the same plane layout with the optical coupler, so that more board distribution space is occupied.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a high frequency generator switch detection circuitry, can reduce cost, practice thrift circuit board component overall arrangement space.
The technical scheme of the utility model as follows: the utility model provides a high frequency generator switch detection circuitry, include: the output end of the key module is connected with the first input end of the comparator, the output end of the reference voltage module is connected with the second input end of the comparator, the output end of the comparator is connected with the input end of the main control module through the isolation module, and the output end of the power supply module is connected with the input end of the reference voltage module, the input end of the key module, the input end of the comparator and the input end of the isolation module through the transformer.
Furthermore, the power supply module further comprises a switch module, the output end of the power supply module is connected with the input end of the comparator through the switch module, and the output end of the main control module is connected with the input end of the switch module.
Further, the switch module comprises an MOS tube, a first resistor and a third diode, a source electrode of the MOS tube is connected with a negative electrode of the power module, a grid electrode of the MOS tube is connected with an output end of the main control module, a drain electrode of the MOS tube is connected with a negative electrode of the third diode, a positive electrode of the third diode is connected with a first input end of the transformer, the grid electrode of the MOS tube is connected with the source electrode of the MOS tube through the first resistor, and a positive electrode of the power module is connected with a second input end of the transformer.
Furthermore, the key module comprises a key and a filtering module, and the output end of the key is connected with the first input end of the comparator through the filtering module.
Furthermore, the filtering module includes a seventh resistor, a tenth resistor, and a twelfth capacitor, one end of the key is connected to the first output terminal of the transformer, the other end of the key is connected to the first input terminal of the comparator through the tenth resistor, and the second output terminal of the transformer is connected to the first input terminal of the comparator through the twelfth capacitor and the seventh resistor, respectively.
Further, the reference voltage module includes a second resistor, a third capacitor and a fourth resistor, a second output terminal of the transformer is connected to the second input terminal of the comparator through the third capacitor and the second resistor, respectively, and a first output terminal of the transformer is connected to the second input terminal of the comparator through the fourth resistor.
Further, the isolation module includes an optocoupler.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses a transformer replaces DC-DC to keep apart power module, has practiced thrift the cost, uses the transformer can realize perpendicular overall arrangement with the opto-coupler on PCB in addition, practices thrift the overall arrangement space, does benefit to small volume lightweight design.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the embodiments described are illustrative of some, but not all embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1, there is shown a high frequency generator switch detection circuit comprising: the key module, the comparator, the reference voltage module, the isolation module, host system, power module, switch module, and transformer, key module's output is connected with the first input of comparator, reference voltage module's output is connected with the second input of comparator, the output of comparator is connected with host system's input through the isolation module, power module's output passes through transformer and reference voltage module's input, key module's input, comparator U2's input, the input of isolation module is connected, power module's output is connected with the input of comparator through switch module, host system's output is connected with switch module's input.
The utility model discloses in, carry out whole circuit isolation power supply through the transformer, the signal of this button carries out the filtering through filter circuit when the button module is pressed, then will carry out the comparison through the comparator, and the comparator is through keeping apart module output excitation signal to host system. Just begin to control high frequency generator transmission high frequency energy immediately, the utility model discloses a DC-DC among the transformer replacement prior art keeps apart power module, has practiced thrift the cost, uses the transformer to realize perpendicular overall arrangement on PCB with the opto-coupler in addition, practices thrift the overall arrangement space, does benefit to small volume lightweight design.
As shown in fig. 2, a schematic circuit diagram of a high frequency generator switch detection circuit is shown, wherein the comparator is of type LM393 integrated with 2 comparators.
The switch module comprises a MOS transistor Q1, a first resistor R1 and a third diode R3, the source of the MOS transistor Q1 is connected with the negative electrode of the power module, the gate of the MOS transistor Q1 is connected with the output end of the main control module, the drain of the MOS transistor Q1 is connected with the negative electrode of the third diode R3, the positive electrode +5V of the third diode R3 is connected with the first input end of the transformer TRA1A, the gate of the MOS transistor Q1 is connected with the source of the MOS transistor Q1 through the first resistor R1, and the positive electrode +5V of the power module is connected with the second input end of the transformer TRA 1A.
The key module comprises a key and a filtering module, and the output end of the key is connected with the first input end of the comparator U2 through the filtering module. In this embodiment, the key module includes a first key module and a second key module with the same circuit structure, and the first key module is selected to describe that the first key module includes the key K3.
The filtering module comprises a seventh resistor R7, a tenth resistor R10 and a twelfth capacitor C12, one end of a key is connected with a first output end of a transformer TRA1A, the other end of the key K3 is connected with a first input end of a comparator U2 through a tenth resistor R10, and a second output end of the transformer TRA1A is connected with a first input end of the comparator U2 through the twelfth capacitor C12 and a seventh resistor R7.
The reference voltage module comprises a second resistor R2, a third capacitor C3 and a fourth resistor R4, a second output end of the transformer TRA1A is connected with a second input end of the comparator U2 through the third capacitor C3 and the second resistor R2, and a first output end of the transformer TRA1A is connected with a second input end of the comparator U2 through the fourth resistor R4.
The isolation module comprises a first isolation module and a second isolation module which are the same in circuit structure, the first isolation module comprises a first optical coupler U1, a first output end OUTA of a comparator U2 is connected with a pin 1 of the first optical coupler, and a pin 4 of the first optical coupler U1 is connected with an IO port N1 of the main control module.
The working principle is as follows: the transformer TRA1A couples the power supply module from the control terminal to the high voltage application terminal, supplying power to the entire circuit. The cost of the circuit is well controlled relative to using a high voltage isolated DC-DC supply. When the key K3 is pressed, the signal of the key is compared by the comparator U2, and the comparator U2 outputs a level to the diode of the first optocoupler U1, so that the transistor at the receiving end of the first optocoupler U1 is turned on and pulls down the level, and thus the main control module receives a low-level excitation signal. The master control module then starts to control the hf generator to emit hf energy.
The following points need to be explained:
(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.
(2) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.
The above is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present disclosure, and shall be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (7)
1. A high frequency generator switch detect circuit, comprising: the output end of the key module is connected with the first input end of the comparator, the output end of the reference voltage module is connected with the second input end of the comparator, the output end of the comparator is connected with the input end of the main control module through the isolation module, and the output end of the power supply module is connected with the input end of the reference voltage module, the input end of the key module, the input end of the comparator and the input end of the isolation module through the transformer.
2. The switch detection circuit of claim 1, further comprising a switch module, wherein the output terminal of the power supply module is connected to the input terminal of the comparator through the switch module, and the output terminal of the main control module is connected to the input terminal of the switch module.
3. The switch detection circuit of claim 2, wherein the switch module comprises a MOS transistor, a first resistor, and a third diode, a source of the MOS transistor is connected to a negative terminal of the power module, a gate of the MOS transistor is connected to the output terminal of the main control module, a drain of the MOS transistor is connected to a negative terminal of the third diode, an anode of the third diode is connected to the first input terminal of the transformer, a gate of the MOS transistor is connected to the source of the MOS transistor through the first resistor, and an anode of the power module is connected to the second input terminal of the transformer.
4. The switch detection circuit of claim 1, wherein the key module comprises a key and a filter module, and an output terminal of the key is connected to the first input terminal of the comparator through the filter module.
5. The switch detection circuit of claim 4, wherein the filtering module comprises a seventh resistor, a tenth resistor, and a twelfth capacitor, one end of the key is connected to the first output terminal of the transformer, the other end of the key is connected to the first input terminal of the comparator through the tenth resistor, and the second output terminal of the transformer is connected to the first input terminal of the comparator through the twelfth capacitor and the seventh resistor, respectively.
6. The switch detection circuit of claim 1, wherein the reference voltage module comprises a second resistor, a third capacitor and a fourth resistor, the second output terminal of the transformer is connected to the second input terminal of the comparator through the third capacitor and the second resistor, respectively, and the first output terminal of the transformer is connected to the second input terminal of the comparator through the fourth resistor.
7. A high frequency generator switch detect circuit as claimed in claim 1 wherein said isolation module includes an optocoupler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022191027.7U CN213689867U (en) | 2020-09-29 | 2020-09-29 | High-frequency generator switch detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022191027.7U CN213689867U (en) | 2020-09-29 | 2020-09-29 | High-frequency generator switch detection circuit |
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| CN213689867U true CN213689867U (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116807595A (en) * | 2023-08-29 | 2023-09-29 | 厚凯(北京)医疗科技有限公司 | Energy output device, method for operating an energy output device, energy output system, and storage medium |
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2020
- 2020-09-29 CN CN202022191027.7U patent/CN213689867U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116807595A (en) * | 2023-08-29 | 2023-09-29 | 厚凯(北京)医疗科技有限公司 | Energy output device, method for operating an energy output device, energy output system, and storage medium |
| CN116807595B (en) * | 2023-08-29 | 2023-12-05 | 厚凯(北京)医疗科技有限公司 | Energy output device, method for operating an energy output device, energy output system, and storage medium |
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