CN218601417U - Switch detection circuit, device and equipment - Google Patents
Switch detection circuit, device and equipment Download PDFInfo
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- CN218601417U CN218601417U CN202123435031.4U CN202123435031U CN218601417U CN 218601417 U CN218601417 U CN 218601417U CN 202123435031 U CN202123435031 U CN 202123435031U CN 218601417 U CN218601417 U CN 218601417U
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Abstract
The utility model relates to a circuit detection technical field provides a switch detection circuitry, device and equipment, the circuit includes: the switch access module and the detection feedback module are respectively connected with the switch detection module; the switch detection module is used for sending an initial clock signal to the switch access module; the switch access module sends a corresponding feedback signal to the switch detection module according to the access state of the switch access port when receiving the initial clock signal; the switch detection module compares the feedback signal with the initial clock signal when receiving the feedback signal and sends a comparison result signal to the detection feedback module; and the detection feedback module is used for displaying the switch access state of the switch access module when receiving the comparison result signal. The switch access state can be presented in real time, and the detection circuit structure is simplified compared with the prior art.
Description
Technical Field
The utility model relates to a circuit detection technical field especially relates to a switch detection circuitry, device and equipment.
Background
At present, most of electronic equipment is at the during operation, and electronic equipment's functional circuit often is in the inconvenient dismantlement of encapsulated situation, and because functional circuit's connection is difficult for observing at the physical state simultaneously, how to keep functional circuit normal work simultaneously, detect some electronic component access state in the functional circuit, become the technical problem who awaits a urgent solution.
The above description is only for assistance in understanding the technical solutions of the present invention, and does not represent an admission that the above description is prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a switch detection circuitry, device and equipment, aims at solving the technical problem whether the unable effectual detection circuitry switch of prior art inserts.
In order to achieve the above object, the utility model provides a switch detection circuit, the circuit includes: the system comprises a switch access module, a switch detection module and a detection feedback module, wherein the switch access module and the detection feedback module are respectively connected with the switch detection module;
the switch detection module is used for sending an initial clock signal to the switch access module;
the switch access module is used for sending a corresponding feedback signal to the switch detection module according to the access state of the switch access port when receiving the initial clock signal;
the switch detection module is further configured to compare the feedback signal with the initial clock signal and send a comparison result signal to the detection feedback module when receiving the feedback signal;
and the detection feedback module is used for displaying the switch access state of the switch access module when receiving the comparison result signal.
Optionally, the switch access module includes a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch, and a second switch;
the first pin of the first switch is connected with the first end of the first capacitor, the second pin of the first switch is connected with the second end of the first capacitor, the third pin of the first switch is connected with the first end of the first resistor, the first pin of the second switch is connected with the first end of the second capacitor, the second pin of the second switch is connected with the second end of the second capacitor, the third pin of the second switch is connected with the first end of the second resistor, the second end of the first capacitor is grounded, the second end of the second capacitor is grounded, the first end of the first capacitor is connected with a power supply, the first end of the second capacitor is connected with a power supply, the second end of the first resistor is connected with the first end of the third resistor, the second end of the second resistor is connected with the first end of the fourth resistor, the second end of the first resistor is further connected with the switch detection module, the second end of the second resistor is further connected with the switch detection module, and the second end of the third resistor is grounded.
Optionally, the switch detection module includes a control chip, a third capacitor, a fifth resistor, and a sixth resistor;
the second pin of the control chip is connected with the second end of the fifth resistor, the third pin of the control chip is connected with the second end of the sixth resistor, the fifth pin of the control chip is connected with the first end of the fifth resistor, the sixth pin of the control chip is connected with the first end of the sixth resistor, the seventh pin of the control chip is connected with the detection feedback module, the eighth pin of the control chip is connected with the first end of the third capacitor, the first pin of the control chip is connected with the second end of the third capacitor, the first end of the third capacitor is grounded, the second end of the third capacitor is connected with the power supply, the first end of the fifth resistor is further connected with the second end of the first resistor, and the first end of the sixth resistor is further connected with the second end of the second resistor.
Optionally, the detection feedback module includes a signal amplification unit and a result feedback unit;
the signal amplifying unit is used for receiving the comparison result signal, amplifying the comparison result signal and sending the amplified comparison result signal to the result feedback unit;
and the result feedback unit is used for receiving the amplified comparison result signal and displaying the switch access state according to the amplified comparison result signal.
Optionally, the signal amplifying unit includes a first triode, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor;
the emitter of the first triode is connected with the second end of the tenth resistor, the base of the first triode is connected with the first end of the seventh resistor, the base of the first triode is further connected with the first end of the eighth resistor, the collector of the first triode is connected with the second end of the eighth resistor, the collector of the first triode is further connected with the second end of the ninth resistor, the second end of the seventh resistor is connected with the seventh pin of the control chip, the second end of the eighth resistor is connected with the second end of the ninth resistor, the second end of the eighth resistor is grounded, the first end of the tenth resistor is connected with the power supply, and the first end of the ninth resistor is connected with the result feedback unit.
Optionally, the result feedback unit includes a first MOS transistor, a first diode, an eleventh resistor, and an indicator light;
the grid electrode of the first MOS tube is connected with the first end of the ninth resistor, the source electrode of the first MOS tube is connected with the second end of the eleventh resistor, the drain electrode of the first MOS tube is connected with the anode of the first diode, the first end of the eleventh resistor is connected with the first end of the tenth resistor, the first end of the eleventh resistor is further connected with the anode of the indicator light, the second end of the eleventh resistor is further connected with the cathode of the indicator light, the cathode of the first diode is connected with the cathode of the indicator light, and the anode of the first diode is grounded.
To achieve the above object, the present invention further provides a switch detection device, which includes the switch detection circuit as described above.
In order to achieve the above object, the present invention further provides a switch detection device, which comprises the switch detection device as described above.
The utility model relates to a circuit detection technology field provides a switch detection circuitry, device and equipment, the circuit includes: the system comprises a switch access module, a switch detection module and a detection feedback module, wherein the switch access module and the detection feedback module are respectively connected with the switch detection module; the switch detection module is used for sending an initial clock signal to the switch access module; the switch access module is used for sending a corresponding feedback signal to the switch detection module according to the access state of the switch access port when receiving the initial clock signal; the switch detection module is further configured to compare the feedback signal with the initial clock signal and send a comparison result signal to the detection feedback module when receiving the feedback signal; and the detection feedback module is used for displaying the switch access state of the switch access module when receiving the comparison result signal. The utility model discloses a real-time detection received feedback signal reaches the judgement to switch access state in the circuit and compares in prior art, has realized that switch access state's real-time presentation has simplified the detection circuitry structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block diagram of a first embodiment of the switch detection circuit of the present invention;
fig. 2 is a functional block diagram of a detection feedback module according to a first embodiment of the switch detection circuit of the present invention;
fig. 3 is a schematic circuit diagram of the switch detection circuit according to the first embodiment of the present invention.
The reference numbers indicate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Furthermore, the descriptions in the present application related to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are implicitly being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a switch detection circuitry.
Referring to fig. 1, in the embodiment of the present invention, the switch detection circuit includes: the detection device comprises a switch access module 10, a switch detection module 20 and a detection feedback module 30, wherein the switch access module 10 and the detection feedback module 30 are respectively connected with the switch detection module 20;
the switch detection module 20 is configured to send an initial clock signal to the switch access module 10;
it should be noted that what is actually detected by the switch detection module 20 about the switch connection state of the switch connection module 10 is the control chip U1, and when the control chip U1 starts to detect the switch connection state, an initial clock signal with a certain frequency is sent to the switch connection module 10 through the second pin (P02) and the third pin (P04) of the control chip U1.
It is understood that the control chip U1 may be an MCU-MC32P6250 chip; the control chip U1 is connected to the switch access module 10 and the detection feedback module 30, respectively, and when the control chip U1 does not perform switch detection, the detection feedback module 30 does not operate.
The switch access module 10 is configured to send a corresponding feedback signal to the switch detection module 20 according to an access state of the switch access port when receiving the initial clock signal;
it should be noted that, when the switch access module receives the initial clock signal, different signal feedbacks may be performed according to the switch access state. Taking the first switch J1 as an example, when the first switch J1 is in the on state, the first switch first receives an initial clock signal sent by the second pin (P02) in the control chip U1, and then since the first switch J1 is in the on state, the first switch J1, the first capacitor and the external power supply form a high-low level signal generating circuit and send a high-low level signal to the switch detection module 20.
It is understood that the specific type of the feedback signal is determined by the switch-on state, and when the switch is in the switch-on state, the feedback signal is a high-low level signal generated by the switch-on module 10; when the switch is in an off state, the feedback signal is an initial clock signal sent by the control chip U1.
The switch detection module 20 is further configured to compare the feedback signal with the initial clock signal when receiving the feedback signal, and send a comparison result signal to the detection feedback module;
it should be noted that, comparing the feedback signal with the initial clock signal substantially determines the type of the feedback signal, and when the feedback signal is a high-low level signal, it indicates that the switch is switched on; and when the feedback signal is an initial clock signal, the switch is turned off.
The detection feedback module 30 is configured to display a switch access state of the switch access module when receiving the comparison result signal.
It can be understood that, when the detection feedback module 30 displays the switch connection state of the switch connection module in a specific implementation, the display is embodied by detecting the state of an indicator lamp in the feedback module 30, and when the switch is in the connection state, the indicator lamp power supply circuit is turned on, and the indicator lamp is turned on; when the switch is in an off state, the indicator light power supply circuit does not work, and the indicator light does not react.
Further, the switch access module 10 includes a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch, and a second switch; the first pin of the first switch is connected with the first end of the first capacitor, the second pin of the first switch is connected with the second end of the first capacitor, the third pin of the first switch is connected with the first end of the first resistor, the first pin of the second switch is connected with the first end of the second capacitor, the second pin of the second switch is connected with the second end of the second capacitor, the third pin of the second switch is connected with the first end of the second resistor, the second end of the first capacitor is grounded, the second end of the second capacitor is grounded, the first end of the first capacitor is connected with a power supply, the first end of the second capacitor is connected with the power supply, the second end of the first resistor is connected with the first end of the third resistor, the second end of the second resistor is connected with the first end of the fourth resistor, the second end of the first resistor is also connected with the switch detection module, the second end of the second resistor is also connected with the switch detection module, and the second end of the third resistor is connected with the second end of the fourth resistor, and the second end of the fourth resistor is grounded.
It should be noted that the switch access module 10 is mainly composed of a first switch J1 and a second switch J2, and in a specific implementation, when the first switch J1 or the second switch J2 is accessed to the switch detection circuit, both of them will first form a high-low level generation circuit with a connected capacitor and a power supply, and then output a high-low level signal different from an initial clock signal as a detection feedback signal in the switch detection circuit, where a first resistor and a second resistor respectively connected to the first switch J1 and the second switch J2 in the switch access module 10 serve as protection resistors to protect the switch detection circuit by current limiting.
Further, the switch detection module 20 includes a control chip, a third capacitor, a fifth resistor, and a sixth resistor; the second pin of the control chip is connected with the second end of the fifth resistor, the third pin of the control chip is connected with the second end of the sixth resistor, the fifth pin of the control chip is connected with the first end of the fifth resistor, the sixth pin of the control chip is connected with the first end of the sixth resistor, the seventh pin of the control chip is connected with the detection feedback module, the eighth pin of the control chip is connected with the first end of the third capacitor, the first pin of the control chip is connected with the second end of the third capacitor, the first end of the third capacitor is grounded, the second end of the third capacitor is connected with the power supply, the first end of the fifth resistor is further connected with the second end of the first resistor, and the first end of the sixth resistor is further connected with the second end of the second resistor.
It should be noted that what specifically implements the switch detection function in the switch detection module 20 is the control chip U1, when the switch detection module 20 starts to perform the switch access state detection, the control chip U1 continuously outputs a clock signal with a certain frequency to the switch access module 10 through the signal output ports P02 and P04, then receives the feedback signals from the first switch J1 and the second switch J2 in the switch access module 10 through the signal receiving ports P40 and P41, and finally analyzes the received feedback signals and outputs the analysis comparison result to the detection feedback module 30 through the feedback output port P44.
It can be understood that the first pin and the eighth pin of the control chip U1 are respectively connected to a power supply and GND, and form a power supply circuit of the control chip together with a third capacitor, and the fifth resistor and the sixth resistor in the switch detection module 20 both belong to protection resistors, and achieve the function of the protection circuit through current limiting.
Further, referring to fig. 2, the detection feedback module 30 includes a signal amplifying unit 31 and a result feedback unit 32; the signal amplifying unit is used for receiving the comparison result signal, amplifying the comparison result signal and sending the amplified comparison result signal to the result feedback unit; and the result feedback unit is used for receiving the amplified comparison result signal and displaying the switch access state according to the amplified comparison result signal.
It should be noted that the comparison result signal is an electrical signal, and specifically may be an output voltage.
Further, the signal amplifying unit 31 includes a first triode, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor; the emitter of the first triode is connected with the second end of the tenth resistor, the base of the first triode is connected with the first end of the seventh resistor, the base of the first triode is further connected with the first end of the eighth resistor, the collector of the first triode is connected with the second end of the eighth resistor, the collector of the first triode is further connected with the second end of the ninth resistor, the second end of the seventh resistor is connected with the seventh pin of the control chip, the second end of the eighth resistor is connected with the second end of the ninth resistor, the second end of the eighth resistor is grounded, the first end of the tenth resistor is connected with the power supply, and the first end of the ninth resistor is connected with the result feedback unit 32.
It can be understood that, when the signal amplifying unit 31 receives the comparison result signal, the base of the first triode obtains a voltage to further achieve the conduction of the first triode and amplify the received comparison result signal to generate an amplified voltage. The seventh resistor, the ninth resistor and the tenth resistor in the signal amplifying unit 31 are all protection resistors, and realize circuit protection by current limiting, and the eighth resistor is a base bias resistor of the first triode in the signal amplifying unit 31 and forms a signal amplifying basic circuit together with the first triode.
Further, the result feedback unit 32 includes a first MOS transistor, a first diode, an eleventh resistor, and an indicator light; the grid electrode of the first MOS tube is connected with the first end of the ninth resistor, the source electrode of the first MOS tube is connected with the second end of the eleventh resistor, the drain electrode of the first MOS tube is connected with the anode of the first diode, the first end of the eleventh resistor is connected with the first end of the tenth resistor, the first end of the eleventh resistor is further connected with the anode of the indicator light, the second end of the eleventh resistor is further connected with the cathode of the indicator light, the cathode of the first diode is connected with the cathode of the indicator light, and the anode of the first diode is grounded.
It should be noted that, a gate of the first MOS transistor of the result feedback unit 32 is connected to the ninth resistor of the signal amplification unit 31, so that when the signal amplification unit 31 receives and amplifies the feedback signal, the amplified feedback signal is sent to the result feedback unit 32, and in specific implementation, the gate of the first MOS transistor has an amplified voltage to turn on the first MOS transistor, a power supply circuit of the indicator light forms a power supply loop, and the indicator light is turned on. In the result feedback unit 32, the first diode D1 is a zener diode and is used for keeping voltage stable, the eleventh resistor is a protection resistor, and protection of the power supply loop of the indicator lamp is realized by current limiting.
This embodiment is through proposing a switching detection circuit, the circuit includes: the system comprises a switch access module, a switch detection module and a detection feedback module, wherein the switch access module and the detection feedback module are respectively connected with the switch detection module; the switch detection module is used for sending an initial clock signal to the switch access module; the switch access module is used for sending a corresponding feedback signal to the switch detection module according to the access state of the switch access port when receiving the initial clock signal; the switch detection module is also used for comparing the feedback signal with the initial clock signal when receiving the feedback signal and sending a comparison result signal to the detection feedback module; and the detection feedback module is used for displaying the switch access state of the switch access module when receiving the comparison result signal. In the embodiment, the switch access state in the circuit is judged by detecting the received feedback signal in real time, so that the switch access state is presented in real time.
In order to achieve the above object, the present invention further provides a switch detection device, which includes the switch detection circuit as described above. The specific structure of the switch detection circuit refers to the above embodiments, and since the switch detection device adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated herein.
In order to achieve the above object, the utility model discloses still provide a switch check out test set, switch check out test set includes as above switch detection device. The specific structure of the switch detection device refers to the above embodiments, and since the switch detection device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. A switch detection circuit, the circuit comprising: the system comprises a switch access module, a switch detection module and a detection feedback module, wherein the switch access module and the detection feedback module are respectively connected with the switch detection module;
the switch detection module is used for sending an initial clock signal to the switch access module;
the switch access module is used for sending a corresponding feedback signal to the switch detection module according to the access state of the switch access port when receiving the initial clock signal;
the switch detection module is further configured to compare the feedback signal with the initial clock signal and send a comparison result signal to the detection feedback module when receiving the feedback signal;
and the detection feedback module is used for displaying the switch access state of the switch access module when receiving the comparison result signal.
2. The switch detection circuit of claim 1, wherein the switch access module comprises a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch, and a second switch;
the first pin of the first switch is connected with the first end of the first capacitor, the second pin of the first switch is connected with the second end of the first capacitor, the third pin of the first switch is connected with the first end of the first resistor, the first pin of the second switch is connected with the first end of the second capacitor, the second pin of the second switch is connected with the second end of the second capacitor, the third pin of the second switch is connected with the first end of the second resistor, the second end of the first capacitor is grounded, the second end of the second capacitor is grounded, the first end of the first capacitor is connected with a power supply, the first end of the second capacitor is connected with a power supply, the second end of the first resistor is connected with the first end of the third resistor, the second end of the second resistor is connected with the first end of the fourth resistor, the second end of the first resistor is further connected with the switch detection module, the second end of the second resistor is further connected with the switch detection module, and the second end of the third resistor is grounded.
3. The switch detection circuit according to claim 2, wherein the switch detection module comprises a control chip, a third capacitor, a fifth resistor and a sixth resistor, and the control chip is of a type of MCU-MC32P6250;
the second pin of the control chip is connected with the second end of the fifth resistor, the third pin of the control chip is connected with the second end of the sixth resistor, the fifth pin of the control chip is connected with the first end of the fifth resistor, the sixth pin of the control chip is connected with the first end of the sixth resistor, the seventh pin of the control chip is connected with the detection feedback module, the eighth pin of the control chip is connected with the first end of the third capacitor, the first pin of the control chip is connected with the second end of the third capacitor, the first end of the third capacitor is grounded, the second end of the third capacitor is connected with the power supply, the first end of the fifth resistor is further connected with the second end of the first resistor, and the first end of the sixth resistor is further connected with the second end of the second resistor.
4. The switch detection circuit of claim 3, wherein the detection feedback module comprises a signal amplification unit and a result feedback unit;
the signal amplifying unit is used for receiving the comparison result signal, amplifying the comparison result signal and sending the amplified comparison result signal to the result feedback unit;
and the result feedback unit is used for receiving the amplified comparison result signal and displaying the switch access state according to the amplified comparison result signal.
5. The switch detection circuit according to claim 4, wherein the signal amplification unit includes a first transistor, a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor;
the emitter of the first triode is connected with the second end of the tenth resistor, the base of the first triode is connected with the first end of the seventh resistor, the base of the first triode is further connected with the first end of the eighth resistor, the collector of the first triode is connected with the second end of the eighth resistor, the collector of the first triode is further connected with the second end of the ninth resistor, the second end of the seventh resistor is connected with the seventh pin of the control chip, the second end of the eighth resistor is connected with the second end of the ninth resistor, the second end of the eighth resistor is grounded, the first end of the tenth resistor is connected with the power supply, and the first end of the ninth resistor is connected with the result feedback unit.
6. The switch detection circuit of claim 5, wherein the result feedback unit comprises a first MOS transistor, a first diode, an eleventh resistor, and an indicator light;
the grid electrode of the first MOS tube is connected with the first end of the ninth resistor, the source electrode of the first MOS tube is connected with the second end of the eleventh resistor, the drain electrode of the first MOS tube is connected with the anode of the first diode, the first end of the eleventh resistor is connected with the first end of the tenth resistor, the first end of the eleventh resistor is further connected with the anode of the indicator light, the second end of the eleventh resistor is further connected with the cathode of the indicator light, the cathode of the first diode is connected with the cathode of the indicator light, and the anode of the first diode is grounded.
7. A switch detection device, characterized in that it comprises a switch detection circuit according to any one of claims 1 to 6.
8. A switch detection device characterized in that it comprises a switch detection apparatus according to claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435031.4U CN218601417U (en) | 2021-12-30 | 2021-12-30 | Switch detection circuit, device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123435031.4U CN218601417U (en) | 2021-12-30 | 2021-12-30 | Switch detection circuit, device and equipment |
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| CN218601417U true CN218601417U (en) | 2023-03-10 |
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| CN202123435031.4U Active CN218601417U (en) | 2021-12-30 | 2021-12-30 | Switch detection circuit, device and equipment |
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