Trigger output circuit and driving device
By using a combination of a comparator module, an amplifier module, a switch module, and an output control module in the trigger output circuit, the high cost problem caused by sensor devices is solved, and cost-effective output signal control is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI LUXSHARE INTELLIGENT MFG CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-05
AI Technical Summary
The use of sensors in existing trigger output circuits results in higher costs.
By employing a combination of a comparison module, an amplification module, a switching module, and an output control module, the output signal is controlled by comparing the magnitude of a first voltage with a reference voltage, thus avoiding the use of sensor devices.
This reduces the cost of the trigger output circuit while achieving effective control of the output signal.
Smart Images
Figure CN224205074U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic technology, and in particular to a trigger output circuit and driving device. Background Technology
[0002] A trigger output circuit is a circuit that can generate a corresponding output based on a specific trigger signal, and it is widely used in various electronic devices and power supply systems.
[0003] However, in existing technologies, trigger output circuits mostly incorporate sensors to trigger control based on physical quantities detected by these sensors, such as magnetic fields, light, or temperature. The inclusion of sensors increases the cost of trigger output circuits. Utility Model Content
[0004] This invention provides a trigger output circuit and a driving device to reduce the cost of the trigger output circuit.
[0005] According to one aspect of the present invention, a trigger output circuit is provided, which includes: a comparison module, an amplification module, a switching module, and an output control module;
[0006] The first input terminal of the comparison module is used to receive a first voltage, and the second input terminal of the comparison module is used to receive a reference voltage;
[0007] The switching module has a control terminal, an input terminal, and an output terminal. The output terminal of the comparison module is coupled to the control terminal of the switching module through the amplification module. The input terminal of the switching module is coupled to the driving power supply. The output terminal of the switching module is coupled to ground. The input terminal or the output terminal of the switching module is also coupled to the enable terminal of the output control module.
[0008] The comparison module is used to compare the magnitude of the first voltage and the reference voltage. The amplification module is used to control the switching module to be turned on or off. The switching module is used to control the output control module to be turned on or off. When the output control module is turned on, it outputs a first signal.
[0009] Optionally, when the input terminal of the switch module is coupled to the enable terminal of the output control module, the input terminal of the switch module is connected to the driving power supply through a first resistor, and the enable terminal of the output control module is coupled between the input terminal of the switch module and the first resistor.
[0010] Optionally, when the output terminal of the switch module is coupled to the enable terminal of the output control module, the output terminal of the switch module is grounded through a first resistor, and the enable terminal of the output control module is coupled between the output terminal of the switch module and the first resistor.
[0011] Optionally, the comparison module includes: a comparator and a second resistor;
[0012] The first input terminal of the comparator is used to connect to the first voltage, the second input terminal of the comparator is used to connect to the reference voltage, the output terminal of the comparator is coupled to the amplification module, the power supply terminal of the comparator is connected to the power supply voltage, the ground terminal of the comparator is grounded, and the second resistor is coupled between the output terminal and the power supply terminal of the comparator.
[0013] The amplification module includes: an amplifier;
[0014] The first input terminal of the amplifier is coupled to the output terminal of the comparator, the second input terminal of the amplifier is coupled to the output terminal of the amplifier, the output terminal of the amplifier is coupled to the control terminal of the switching module, the power supply terminal of the amplifier is connected to the power supply voltage, and the ground terminal of the amplifier is grounded.
[0015] Optionally, the trigger output circuit further includes: a first voltage divider resistor and a second voltage divider resistor;
[0016] The first end of the first voltage divider resistor is connected to the amplification module, the second end of the first voltage divider resistor is connected to the first end of the second voltage divider resistor, the second end of the second voltage divider resistor is grounded, and the control terminal of the switching module is coupled between the first voltage divider resistor and the second voltage divider resistor.
[0017] Optionally, the trigger output circuit further includes: an input selection module;
[0018] The first input terminal of the input selection module is used to connect to a first external voltage, the second input terminal of the input selection module is used to connect to a second external voltage, and the first input terminal of the comparison module is coupled to the input selection module;
[0019] The input selection module is used to switch to receive different voltage signals so that the first input terminal of the comparison module receives a first voltage representing different signals.
[0020] Optionally, the switching module is any one of a MOSFET, a transistor, or a thyristor.
[0021] Optionally, the input terminal of the output control module is coupled to a first power supply, the output terminal of the output control module is coupled to a lower-level device, and the enable terminal of the output control module is coupled to the switch module.
[0022] When the output control module is turned on, it outputs the first signal; wherein the first signal is a voltage signal used to power the lower-level device.
[0023] Optionally, the input terminal of the output control module is coupled to a first power supply, the output terminal of the output control module is coupled to a lower-level device, and the enable terminal of the output control module is coupled to the switch module.
[0024] When the output control module is turned on, it outputs the first signal; wherein, the first signal is a control signal used to control the output voltage of the lower-level device or to control the lower-level device to change its state.
[0025] According to another aspect of the present invention, a driving device is also provided, which includes the trigger output circuit described in any of the above embodiments.
[0026] The comparison module of this embodiment compares a first voltage with a reference voltage and generates a level signal. The amplification module amplifies the level signal and outputs it to the switching module. The switching module turns the switch on or off according to the level signal to enable the output control module, thereby controlling the output of the first signal. This embodiment controls the output of the first signal by comparing the first voltage with the reference voltage. When the first voltage is less than the reference voltage, the output control module is activated to output the first signal. The circuit triggering does not require the participation of sensors, which helps reduce the cost of the trigger output circuit.
[0027] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of a trigger output circuit provided in an embodiment of the present utility model;
[0030] Figure 2 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present invention;
[0031] Figure 3 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0032] Figure 4 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0033] Figure 5 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0034] Figure 6 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0035] Figure 7 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0036] Figure 8 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0037] Figure 9 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present utility model;
[0038] Figure 10 This is a schematic diagram of the trigger output circuit as the main power supply drive circuit provided in this embodiment of the utility model.
[0039] Figure 11 This is a schematic diagram of a driving device provided in an embodiment of the present utility model. Detailed Implementation
[0040] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0042] This invention provides a trigger output circuit. This trigger output circuit is suitable for use in a driving device to control the output of a first signal. This embodiment controls the output of the first signal by comparing a first voltage with a reference voltage. When the first voltage is less than the reference voltage, the output control module is activated to output the first signal. The circuit triggering does not require the participation of a sensor, which helps reduce the cost of the trigger output circuit. Figure 1 This is a schematic diagram of a trigger output circuit provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of another trigger output circuit provided in an embodiment of this utility model. Combined with... Figure 1 and Figure 2 The trigger output circuit includes: a comparison module 110, an amplification module 120, a switching module 130, and an output control module 140. The first signal can be a voltage signal supplying power to the lower-level device 20, or a control signal controlling the output of the lower-level device 20, or a control signal changing the state of the lower-level device 20.
[0043] The first input terminal of the comparison module 110 is used to receive the first voltage V1, and the second input terminal of the comparison module 110 receives the reference voltage Vref. The switch module 130 has a control terminal, an input terminal, and an output terminal. The output terminal of the comparison module 110 is coupled to the control terminal of the switch module 130 through the amplification module 120. The input terminal of the switch module 130 is connected to the drive power supply 10, and the output terminal of the switch module 130 is grounded. The input terminal or the output terminal of the switch module 130 is also coupled to the enable terminal of the output control module 140. The comparison module 110 is used to compare the magnitude of the first voltage V1 and the reference voltage Vref. The amplification module 120 is used to control the switch module 130 to be turned on or off. The switch module 130 is used to control the output control module 140 to be turned on or off. When the output control module 140 is turned on, it outputs a first signal.
[0044] In one embodiment, the first voltage V1 can be the output voltage of the main power supply. The output control module 140 is also connected to the first power supply 30 and the lower device 20. The lower device 20 is the load, the first power supply 30 is the backup power supply for the lower device 20, and the output control module 140 outputs the voltage of the backup power supply. The trigger output circuit controls the output control module 140 based on the comparison between the first voltage V1 and the reference voltage Vref, thereby outputting a first signal. It should be noted that the first signal is the voltage signal output by the first power supply 30, and the lower device 20 operates under the drive of the first signal. The output voltage of the main power supply is greater than or equal to the reference voltage Vref when the main power supply is normal. When the first voltage V1 is less than the reference voltage Vref, the output control module 140 is turned on, triggering the output circuit to output the first signal. At this time, the power source of the lower device 20 switches from the main power supply to the first power supply 30 (i.e., the backup power supply), and the output control module 140 outputs the first signal representing the voltage value of the first power supply 30. The lower device 20 operates under the drive of the first signal.
[0045] In one embodiment, the first voltage V1 is also the output voltage of the main power supply. The output control module 140 is connected to the first power supply 30 and the lower device 20. The lower device 20 is a backup power supply for the load, the output control module 140 is the drive circuit for the backup power supply, the first power supply 30 is the power supply that maintains the operation of the output control module 140, and the trigger output circuit controls the output control module 140 based on the comparison between the first voltage V1 and the reference voltage Vref, thereby outputting a first signal. It should be noted that in this embodiment, the lower device 20 is a backup power supply, and the first signal is used to control the lower device 20 to conduct, thereby causing the lower device 20 to output the backup power supply voltage. For example, the output control module 140 can be a trigger. The output voltage of the main power supply is greater than or equal to the reference voltage Vref when the main power supply is normal. When the first voltage V1 is less than the reference voltage Vref, the output control module 140 conducts, triggering the output circuit to output the first signal. At this time, the lower device 20 supplies power to the load under the action of the first signal, and the power source of the load switches from the main power supply to the backup power supply.
[0046] In other words, when the first voltage V1 is the output voltage of the main power supply, the trigger output circuit can determine whether the main power supply is abnormal based on the first voltage V1, and switch to the backup power supply when the main power supply is abnormal, so as to continuously supply power to the load connected to the main power supply.
[0047] In one embodiment, the first voltage V1 can be an adjustable control voltage, the lower-level device 20 is the device under test, and the trigger output circuit controls the output control module 140 according to the adjustable control voltage to output a first signal. The first signal is a control signal that changes the state of the lower-level device 20, and the magnitude of the adjustable control voltage can be set according to the user's actual needs. The user can test the lower-level device 20 connected to the output control module 140 by changing the magnitude of the adjustable control voltage. Specifically, the user can adjust the magnitude of the adjustable control voltage while the lower-level device 20 is running. When the first voltage V1 is less than the reference voltage Vref, the trigger output circuit outputs the first signal, which serves as a control signal. After receiving the first signal, the lower-level device 20 changes its state. By observing whether the change in the state of the lower-level device 20 after receiving the first signal meets expectations, the user can judge whether the performance and function of the lower-level device 20 are normal and whether it meets the system design requirements, thereby achieving the testing of the lower-level device 20. Similarly, the user can also perform a self-test on the trigger output circuit by changing the magnitude of the adjustable control voltage. Specifically, the adjustable control voltage is adjusted to be lower than the reference voltage Vref, and the effectiveness of the trigger output circuit is determined by detecting whether the output control module 140 outputs a first signal. When the output control module 140 outputs a first signal, the trigger output circuit is effective; when the output control module 140 does not output a first signal, the trigger output circuit is ineffective.
[0048] The following explains the operation of the trigger output circuit:
[0049] The comparison module 110 generates a level signal based on the comparison between the first voltage V1 and the reference voltage Vref to control the switching module 130 to turn on or off. The level signal includes both low-level and high-level signals.
[0050] When the first voltage V1 is less than the reference voltage Vref, the comparator module 110 generates a low-level signal; when the first voltage V1 is greater than or equal to the reference voltage Vref, the comparator module 110 generates a high-level signal. The amplifier module 120 amplifies the level signal output by the comparator module 110 to enhance the level signal. After amplification by the amplifier module 120, the signal properties remain unchanged; a low-level signal remains a low-level signal, and a high-level signal remains a high-level signal. The switch module 130 acquires the amplified level signal from the amplifier module 120 and operates according to the amplified level signal.
[0051] For example, the switching module 130 can be constructed from any one of a MOSFET, a transistor, or a thyristor. Taking the example of the switching module 130 being constructed from a MOSFET, the MOSFET constituting the switching module 130 can be an NMOS transistor or a PMOS transistor.
[0052] Figure 3 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present invention. Optionally, refer to... Figure 3 The switching module 130 is an NMOS transistor. The gate of the NMOS transistor serves as the control terminal of the switching module 130 and is connected to the amplifier module 120. The drain of the NMOS transistor serves as the input terminal of the switching module 130 and is connected to the drive power supply 10. The source of the NMOS transistor serves as the output terminal of the switching module 130 and is grounded. The drain of the NMOS transistor is also connected to the output control module 140. A first resistor R1 can be placed between the drain of the NMOS transistor and the drive power supply 10 to clamp the enable terminal of the output control module 140 to a high level when the NMOS transistor is turned off, thus stabilizing the enable control of the output control module 140.
[0053] When the level signal is low, the switch module 130 is turned off. At this time, the drive power supply 10 pulls the level of the enable terminal of the output control module 140 high, the output control module 140 is turned on, and the output control module 140 outputs the first signal. When the level signal is high, the switch module 130 is turned on. At this time, the drive power supply 10 is grounded through the switch module 130, the enable terminal of the output control module 140 is low, the output control module 140 is turned off, and the output control module 140 has no output.
[0054] Figure 4 This is a schematic diagram of another trigger output circuit provided in an embodiment of the present invention. Optionally, refer to... Figure 4 The switching module 130 is a PMOS transistor. The gate of the PMOS transistor serves as the control terminal of the switching module 130 and is connected to the amplifier module 120. The source of the PMOS transistor serves as the input terminal of the switching module 130 and is connected to the drive power supply 10. The drain of the PMOS transistor serves as the output terminal of the switching module 130 and is grounded. The drain of the PMOS transistor is grounded through the first resistor R1 and is also connected to the output control module 140.
[0055] When the level signal is low, the switch module 130 is turned on. At this time, the drive power supply 10 pulls the level of the enable terminal of the output control module 140 high through the switch module 130, and the output control module 140 is turned on and outputs the first signal. When the level signal is high, the switch module 130 is turned off. At this time, the connection between the drive power supply 10 and the output control module 140 is disconnected, the enable terminal of the output control module 140 is grounded, the output control module 140 is turned off, and the output control module 140 has no output.
[0056] The comparison module 110 of this embodiment compares the first voltage V1 with the reference voltage Vref and generates a level signal. The amplification module 120 amplifies the level signal and outputs the amplified level signal to the switching module 130. The switching module 130 turns on or off according to the level signal to enable the output control module 140, thereby controlling the output of the first signal. This embodiment controls the output of the first signal by comparing the first voltage V1 with the reference voltage Vref. When the first voltage V1 is less than the reference voltage Vref, the output control module 140 is turned on to output the first signal. The circuit triggering does not require the participation of sensor devices, which helps to reduce the cost of the trigger output circuit.
[0057] Figure 5 This is a schematic diagram of another trigger output circuit provided by an embodiment of the present invention. Optionally, based on the above embodiments, refer to... Figure 5 The comparison module 110 includes: a comparator U1 and a second resistor R2.
[0058] The first input terminal of comparator U1 is used to connect to the first voltage V1, the second input terminal of comparator U1 is used to connect to the reference voltage Vref, the output terminal of comparator U1 is coupled to the amplifier module 120, the power supply terminal of comparator U1 is connected to the power supply voltage VCC, the ground terminal of comparator U1 is grounded, and the second resistor R2 is coupled between the output terminal and the power supply terminal of comparator U1.
[0059] Based on the above embodiments, optionally, refer to... Figure 5 The amplification module 120 includes: amplifier U2.
[0060] The first input terminal of amplifier U2 is coupled to the output terminal of comparator U1, the second input terminal of amplifier U2 is coupled to the output terminal of amplifier U2, the output terminal of amplifier U2 is coupled to the control terminal of switch module 130, the power supply terminal of amplifier U2 is connected to the power supply voltage VCC, and the ground terminal of amplifier U2 is grounded.
[0061] Figure 6 This is a schematic diagram of another trigger output circuit provided by an embodiment of the present invention. Optionally, based on the above embodiments, refer to... Figure 6 The trigger output circuit also includes: a first voltage divider resistor R3 and a second voltage divider resistor R4.
[0062] The first terminal of the first voltage divider resistor R3 is connected to the amplification module 120, the second terminal of the first voltage divider resistor R3 is connected to the first terminal of the second voltage divider resistor R4, the second terminal of the second voltage divider resistor R4 is grounded, and the switching module 130 is coupled between the first voltage divider resistor R3 and the second voltage divider resistor R4. The first voltage divider resistor R3 and the second voltage divider resistor R4 limit the voltage input to the switching module 130 to protect the switching module 130.
[0063] Figure 7 This is a schematic diagram of another trigger output circuit provided by an embodiment of the present invention. Optionally, based on the above embodiments, refer to... Figure 7 The trigger output circuit also includes an input selection module 150.
[0064] The first input terminal of the input selection module 150 is used to connect to the first external voltage V2, and the second input terminal of the input selection module 150 is used to connect to the second external voltage V3. The first input terminal of the comparison module 110 is coupled to the input selection module 150. The input selection module 150 is used to switch to receive different voltage signals so that the first input terminal of the comparison module 110 receives the first voltage V1 that represents different signals.
[0065] For example, the first external voltage V2 can be the main power supply voltage, and the second external voltage V3 can be an adjustable control voltage. Specifically, the input selection module 150 selects the voltage input to the comparison module 110, that is, it selects the first voltage V1 input to the comparison module 110. When the input selection module 150 inputs the first external voltage V2 to the comparison module 110, the main power supply voltage is used as the first voltage V1; when the input selection module 150 inputs the second external voltage V3 to the comparison module 110, the adjustable control voltage is used as the first voltage V1. In this embodiment, by selecting the first voltage V1 through the input selection module 150, the trigger output circuit can switch between different usage scenarios, which is beneficial to realize the functional diversification of the trigger output circuit and enrich the usage scenarios of the trigger output circuit.
[0066] Based on the above embodiments, optionally, refer to... Figure 7 The input selection module 150 includes: a toggle switch S1.
[0067] The first input terminal of the switch S1 is connected to the first external voltage V2, the second input terminal of the switch S1 is connected to the second external voltage V3, and the output terminal of the switch S1 is coupled to the comparison module 110.
[0068] Specifically, the switch S1 has two input contacts and one output contact. The switch S1 selects the first voltage V1 by controlling the connection between the output contact and the input contact. It should be noted that the switch S1 only connects one input contact and the output contact at a time, meaning that only one external voltage (either the first external voltage V2 or the second external voltage V3) is input to the comparator module 110 at any given time. In practical applications, a third resistor R5 can be provided between the second external voltage V3 and the switch S1 to limit the current flowing into the comparator module 110.
[0069] Figure 8 This is a schematic diagram of another trigger output circuit provided in an embodiment of this utility model. Combined with... Figure 7 and Figure 8 The first external voltage V2 is input to the comparator module 110 through the switching switch S1. At this time, the connection between the second external voltage V3 and the comparator module 110 is disconnected. The first external voltage V2 is the output voltage of the main power supply circuit and is used as the first voltage V1. That is, the output voltage of the main power supply is input to the comparator module 110 as the first voltage V1, triggering the output circuit to be used as the switching circuit between the main power supply and the backup power supply.
[0070] Figure 9 This is a schematic diagram of another trigger output circuit provided in an embodiment of this utility model. Combined with... Figure 7 and Figure 9 The second external voltage V3 is input to the comparison module 110 through the switching switch S1. At this time, the connection between the first external voltage V2 and the comparison module 110 is disconnected, and the second external voltage V3 is used as the first voltage V1. That is, the adjustable control voltage is input to the comparison module 110 as the first voltage V1, and the trigger output circuit is used as the test circuit of the lower device 20.
[0071] In one embodiment, the trigger output circuit can also be used as a drive circuit for the main power supply. Figure 10 This is a schematic diagram of the trigger output circuit as the main power supply drive circuit provided in this embodiment of the utility model. Taking the switch module 130, which is composed of NMOS transistors, as an example, refer to... Figure 10When the trigger output circuit is driven by the main power supply, the input selection module 150, comparator module 110, and amplifier module 120 in the trigger output circuit are bypassed. At this time, the input selection module 150, comparator module 110, and amplifier module 120 stop working, the gate of the NMOS transistor is grounded through the second voltage divider resistor R4, and the MOS transistor is turned off. Only the output control module 140 participates in the control of the main power supply in the circuit. Specifically, when the input selection module 150, comparator module 110, and amplifier module 120 in the trigger output circuit are bypassed, the gate level of the NMOS transistor is pulled low through the second voltage divider resistor R4. At this time, the NMOS transistor is turned off, and the enable of the output control module 140 is entirely controlled by the drive power supply 10, that is, the on / off state of the output control module 140 is controlled by setting the output level of the drive power supply 10 to high or low. Specifically, the output control module 140 is turned on when the drive power supply 10 outputs a high level and turned off when the drive power supply 10 outputs a low level. The main power supply outputs when the output control module 140 is turned on, and has no output when the output control module 140 is turned off.
[0072] This utility model embodiment also provides a driving device. Figure 11 This is a schematic diagram of a driving device provided in an embodiment of the present utility model. (Refer to...) Figure 11 The driving device 1000 includes the trigger output circuit 100 provided in any of the above embodiments.
[0073] It should be noted that the driving device 1000 provided in this embodiment of the present invention has the beneficial effects of the trigger output circuit 100 provided in any of the above embodiments, which will not be repeated here.
[0074] In one embodiment, the drive device can be connected to a main power supply, a backup power supply, and a load. The drive device monitors the operating status of the main power supply and switches to the backup power supply to power the load when the main power supply is abnormal.
[0075] In another embodiment, the drive device can be connected to a host computer and the device under test. The host computer controls the drive device, and the drive device outputs a first signal according to the adjustable control voltage issued by the host computer to change the system behavior of the device under test, thereby testing the device under test.
[0076] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.
[0077] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A trigger output circuit, characterized in that, include: Comparison module, amplification module, switching module, and output control module; The first input terminal of the comparison module is used to receive a first voltage, and the second input terminal of the comparison module is used to receive a reference voltage; The switching module has a control terminal, an input terminal, and an output terminal. The output terminal of the comparison module is coupled to the control terminal of the switching module through the amplification module. The input terminal of the switching module is coupled to the driving power supply. The output terminal of the switching module is coupled to ground. The input terminal or the output terminal of the switching module is also coupled to the enable terminal of the output control module. The comparison module is used to compare the magnitude of the first voltage and the reference voltage. The amplification module is used to control the switching module to be turned on or off. The switching module is used to control the output control module to be turned on or off. When the output control module is turned on, it outputs a first signal.
2. The trigger output circuit according to claim 1, characterized in that, When the input terminal of the switching module is coupled to the enable terminal of the output control module, the input terminal of the switching module is connected to the driving power supply through the first resistor, and the enable terminal of the output control module is coupled between the input terminal of the switching module and the first resistor.
3. The trigger output circuit according to claim 1, characterized in that, When the output terminal of the switch module is coupled to the enable terminal of the output control module, the output terminal of the switch module is grounded through a first resistor, and the enable terminal of the output control module is coupled between the output terminal of the switch module and the first resistor.
4. The trigger output circuit according to any one of claims 1-3, characterized in that, The comparison module includes: a comparator and a second resistor; The first input terminal of the comparator is used to connect to the first voltage, the second input terminal of the comparator is used to connect to the reference voltage, the output terminal of the comparator is coupled to the amplification module, the power supply terminal of the comparator is connected to the power supply voltage, the ground terminal of the comparator is grounded, and the second resistor is coupled between the output terminal and the power supply terminal of the comparator. The amplification module includes: an amplifier; The first input terminal of the amplifier is coupled to the output terminal of the comparator, the second input terminal of the amplifier is coupled to the output terminal of the amplifier, the output terminal of the amplifier is coupled to the control terminal of the switching module, the power supply terminal of the amplifier is connected to the power supply voltage, and the ground terminal of the amplifier is grounded.
5. The trigger output circuit according to any one of claims 1-3, characterized in that, Also includes: First voltage divider resistor and second voltage divider resistor; The first end of the first voltage divider resistor is connected to the amplification module, the second end of the first voltage divider resistor is connected to the first end of the second voltage divider resistor, the second end of the second voltage divider resistor is grounded, and the control terminal of the switching module is coupled between the first voltage divider resistor and the second voltage divider resistor.
6. The trigger output circuit according to any one of claims 1-3, characterized in that, Also includes: Input selection module; The first input terminal of the input selection module is used to connect to a first external voltage, the second input terminal of the input selection module is used to connect to a second external voltage, and the first input terminal of the comparison module is coupled to the input selection module; The input selection module is used to switch to receive different voltage signals so that the first input terminal of the comparison module receives a first voltage representing different signals.
7. The trigger output circuit according to any one of claims 1-3, characterized in that, The switching module can be any one of MOSFET, transistor, or thyristor.
8. The trigger output circuit according to any one of claims 1-3, characterized in that, The input terminal of the output control module is coupled to a first power supply, the output terminal of the output control module is coupled to a lower-level device, and the enable terminal of the output control module is coupled to the switch module. When the output control module is turned on, it outputs the first signal; wherein the first signal is a voltage signal used to power the lower-level device.
9. The trigger output circuit according to any one of claims 1-3, characterized in that, The input terminal of the output control module is coupled to a first power supply, the output terminal of the output control module is coupled to a lower-level device, and the enable terminal of the output control module is coupled to the switch module. When the output control module is turned on, it outputs the first signal; wherein, the first signal is a control signal used to control the output voltage of the lower-level device or to control the lower-level device to change its state.
10. A driving device, characterized in that, Includes the trigger output circuit as described in any one of claims 1-9.