CN221303408U - Peak voltage detection circuit, system and equipment - Google Patents
Peak voltage detection circuit, system and equipment Download PDFInfo
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- CN221303408U CN221303408U CN202322627226.1U CN202322627226U CN221303408U CN 221303408 U CN221303408 U CN 221303408U CN 202322627226 U CN202322627226 U CN 202322627226U CN 221303408 U CN221303408 U CN 221303408U
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Abstract
The utility model provides a peak voltage detection circuit, a system and equipment, wherein the detection circuit comprises a main controller, a photoelectric coupler, a circuit power supply and an alarm, wherein the main controller is respectively and electrically connected with the photoelectric coupler and the alarm, the circuit power supply is respectively and electrically connected with the main controller, the photoelectric coupler and the alarm, and the photoelectric coupler is provided with a current limiting element for being connected between an access port of the photoelectric coupler and a power supply to be tested. The peak voltage detection circuit, the peak voltage detection system and the peak voltage detection equipment provided by the utility model have the advantages that the circuit connection structure is simple, the operation is simple and convenient, whether the peak voltage exists in the power supply to be detected or whether the peak value of the peak voltage exceeds an expected value can be intuitively fed back through the alarm of the alarm, the detection time is short, and the detection efficiency is high; the detection circuit or the detection system can be manufactured into independent peak voltage detection equipment, and can detect the peak voltage only by being connected with the equipment to be detected in parallel on the same power supply to be detected when the detection circuit or the detection system is used, so that the detection circuit or the detection system is convenient to use.
Description
Technical Field
The present utility model relates to the field of electronic circuits, and in particular, to a spike voltage detection circuit, system, and apparatus.
Background
In the industrial automation application scenario, a power supply is used to supply power to one or more devices, and at the moment of powering on the devices, due to the effects of electronic elements such as inductance and capacitance, or characteristics such as parasitic inductance and parasitic capacitance, a transient abnormal voltage higher than the voltage of the power supply, often called spike voltage, is generated in a circuit. If the circuit does not have a protection or suppression circuit for peak voltage, sensitive components (such as a sensor and the like) in the equipment can be damaged, and even other equipment using the same power supply can be affected. An oscilloscope is typically used to detect if a spike voltage is present at power up of the device. However, the oscilloscope detection method has certain defects, such as higher operation difficulty, a tester needs to master the using method of the oscilloscope, and the related parameters of the oscilloscope are adjusted to detect the waveform of the spike voltage, and in addition, alarm feedback is not given when the spike voltage is detected, so that the tester cannot quickly judge whether the spike voltage exists. This is caused by the characteristics of the oscilloscope, and because the scope of use of the oscilloscope is wide, an alarm cannot be given to a certain voltage or current waveform.
Disclosure of utility model
The utility model aims to provide a spike voltage detection circuit, a spike voltage detection system and spike voltage detection equipment, and solves the problems that the existing spike voltage detection equipment is high in operation difficulty, has no detection result alarm feedback and the like.
In order to achieve the above purpose, the present utility model proposes the following technical scheme:
A spike voltage detection circuit comprises a main controller, a photoelectric coupler, a circuit power supply and an alarm;
The main controller is respectively and electrically connected with the photoelectric coupler and the alarm, and is used for detecting the peak of the signal transmitted by the photoelectric coupler and sending an alarm instruction to the alarm;
The circuit power supply is respectively and electrically connected with the main controller, the photoelectric coupler and the alarm;
The photoelectric coupler is used as an access port of the detection circuit and is used for being connected with a power supply to be detected, and the photoelectric coupler is provided with a current limiting component and is used for being connected between the access port of the photoelectric coupler and the power supply to be detected.
As a preferred technical scheme of the utility model, the photoelectric coupler comprises a first pin, a second pin, a third pin and a fourth pin, wherein the first pin and the second pin are respectively connected with the positive pole and the negative pole of a power supply to be tested, and the third pin is connected with the positive pole of the circuit power supply;
The main controller comprises a first port and a second port, wherein the first port is used for signal transmission, the first port is connected with the fourth pin, and the second port is connected with a signal transmission port of the alarm.
As a preferable technical scheme of the utility model, the current limiting component is an adjustable resistor with adjustable resistance value.
As a preferable technical scheme of the utility model, the photoelectric coupler is a nanosecond high-speed photoelectric coupler.
As a preferable technical scheme of the utility model, the alarm is any one of an LED indicator lamp, an audible and visual alarm and a sound alarm.
As a preferred technical scheme of the utility model, the detection circuit further comprises a reset button, wherein the reset button is electrically connected with a power supply;
the main controller comprises a third port for signal transmission, and the third port is connected with the signal transmission port of the reset button.
As a preferable technical scheme of the utility model, the circuit power supply is an independent power supply.
As a preferred technical scheme of the utility model, the power supply to be tested is connected in series with the working circuit of the equipment to be tested, and the detection circuit is connected with the working circuit in parallel with the power supply to be tested.
The present utility model provides a spike voltage detection system comprising a spike voltage detection circuit as described above.
The utility model also provides a spike voltage detection apparatus comprising at least one electrical detection system comprising at least the spike voltage detection system as described above.
The peak voltage detection circuit, the peak voltage detection system and the peak voltage detection equipment provided by the utility model have the advantages that the circuit connection structure is simple, the operation is simple and convenient, whether the peak voltage exists in the power supply to be detected or whether the peak value of the peak voltage exceeds an expected value can be intuitively fed back through the alarm of the alarm, the detection time is short, and the detection efficiency is high; the detection circuit or the detection system can be manufactured into independent peak voltage detection equipment, and can detect the peak voltage only by being connected with the equipment to be detected in parallel on the same power supply to be detected when the detection circuit or the detection system is used, so that the detection circuit or the detection system is convenient to use.
It should be understood that all combinations of the foregoing concepts, as well as additional concepts described in more detail below, may be considered a part of the inventive subject matter of the present disclosure as long as such concepts are not mutually inconsistent.
The foregoing and other aspects, embodiments, and features of the present teachings will be more fully understood from the following description, taken together with the accompanying drawings. Other additional aspects of the utility model, such as features and/or advantages of the exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the embodiments according to the teachings of the utility model.
Drawings
The drawings are not intended to be drawn to scale with respect to true references. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a connection block diagram of a detection circuit according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of circuit connection of an optocoupler according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a partial circuit connection of a singlechip according to an embodiment of the utility model;
Fig. 4 is a control flow chart of a single chip microcomputer according to an embodiment of the utility model.
The reference numerals in the drawings have the following meanings:
1-high-speed photoelectric coupler 2-singlechip 3-LED indicator lamp 4-independent power supply 5-reset button 6-adjustable resistor
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.
The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Also, unless the context clearly indicates otherwise, singular forms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "comprises," "comprising," or the like are intended to cover a feature, integer, step, operation, element, and/or component recited as being present in the element or article that "comprises" or "comprising" does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "up", "down", "left", "right" and the like are used only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
The embodiment provides a peak voltage detection circuit, which comprises a main controller, a photoelectric coupler, a current limiting component, a circuit power supply, an alarm and a reset button.
The main controller is respectively and electrically connected with the photoelectric coupler and the alarm, and is used for detecting the peak of the signal transmitted by the photoelectric coupler and sending an alarm instruction to the alarm.
The circuit power supply is respectively and electrically connected with the main controller, the photoelectric coupler and the alarm, and is used for supplying power to the main controller, the photoelectric coupler and the alarm.
The photoelectric coupler is used as an access port of the detection circuit and is used for being connected with a power supply to be detected, and the photoelectric coupler is provided with a current limiting component and is used for being connected between the access port of the photoelectric coupler and the power supply to be detected.
In this embodiment, the main controller is a microcontroller or a single-chip microcomputer, and the single-chip microcomputer is a complete computer system integrated on a chip, which is generally referred to as an embedded microcontroller. The singlechip comprises a central processing unit, a clock circuit, a first port, a second port and a third port, wherein the first port, the second port and the third port are used for signal transmission. The central processing unit comprises an arithmetic unit and a controller, the arithmetic unit is a core device of the main controller, the arithmetic unit can be used for various operations or comparison, and the controller is used for controlling each part of the main controller to work in a coordinated manner; the clock circuit is used for generating a control signal for the operation of the main controller and controlling the main controller to execute instructions strictly according to time sequence. The first port, the second port and the third port are all GPIO ports, and the GPIO ports are general purpose input/output ports for signals, so that the GPIO ports can be used as signal input ports and signal output ports, and the application range of signal connection of the main controller is increased when the GPIO ports are applied to the embodiment.
In this embodiment, the first port is connected to the fourth pin of the optocoupler through a signal transmission line, so that the optocoupler can unidirectionally output the level signal of the fourth pin to the main controller through the signal transmission line. The second port is connected with the signal transmission port of the alarm device through another signal transmission line, so that the main controller can output related control signals/instructions to the alarm device through the signal transmission line, such as level signals for controlling the alarm device to start giving out an alarm or level signals for controlling the alarm device to stop giving out an alarm. The third port is connected with the signal transmission port of the reset button through another signal transmission line, so that the reset button can output a reset level signal to the main controller through the signal transmission line.
In this embodiment, the main controller is mainly used for signal acquisition and controlling the alarm or reset of the alarm. The main controller preferably adopts a singlechip, and the singlechip has high integration level, small volume and high reliability, integrates all functional components on one crystal chip, has high integration level and small volume, is naturally smaller, and ensures that program instructions, constants, tables and the like of the singlechip are solidified in ROM and are not easy to damage, and a plurality of signal channels are all in one chip, so the reliability is high; the control function is strong, in order to meet the control requirement on the object, the instruction system of the singlechip has rich conditions, namely branch transfer capability, logic operation of an IO port and bit processing capability, and is very suitable for special control functions; the detection circuit has low voltage and low power consumption, is convenient for producing portable products, is very suitable for being applied to the detection circuit, and does not increase the weight of the equipment to be detected and occupy excessive volume when the detection circuit is built in the equipment to be detected.
As shown in fig. 4, in the control flow of the single-chip microcomputer in this embodiment, the detection is started, if the single-chip microcomputer collects signals, the single-chip microcomputer outputs IO signals to the alarm through the second port, controls the alarm to send out alarms, if the single-chip microcomputer collects reset signals output by the reset button, the reset signals are output to the alarm, controls the alarm to stop alarming, and the detection is ended up to this point; when no signal is acquired at the first, the detection is directly ended and the alarm is not fed back. The control flow belongs to the most basic control flow of the single chip microcomputer, and most single chip microcomputers have the basic function, so that the existing single chip microcomputer with the function can be directly adopted to be applied to the embodiment.
In this embodiment, the optocoupler is provided with a first pin, a second pin, a third pin, and a fourth pin. The first pin and the second pin are respectively the positive electrode and the negative electrode of the light-emitting diode arranged in the photoelectric coupler, so that the first pin and the second pin are respectively connected with the positive electrode and the negative electrode of the power supply to be detected through wires, and serve as an access port of the detection circuit to be connected with the power supply to be detected, so that the light-emitting diode and the power supply to be detected form a serial loop, and when peak voltage exists, the light-emitting diode is conducted to emit light and the activation of a phototransistor arranged on the other side of the photoelectric coupler is induced to generate current; and a current limiting component is connected in series between the first pin and the positive electrode of the power supply to be tested, the magnitude of the current value passing through the photoelectric coupler is preset through the magnitude of the resistance value of the current limiting component, and the current value is converted into the corresponding peak voltage value in the embodiment. The third pin is connected with the positive pole VCC of the circuit power supply and serves as a comparison end of the level signal of the fourth pin. The fourth pin is connected with the first port of the main controller through a signal transmission line, so that when the level signal output by the fourth pin is the same as the VCC potential, the photoelectric coupler unidirectionally outputs an alarm signal to the main controller through the signal transmission line, and the main controller receives the alarm signal and immediately controls the alarm to give an alarm.
In this embodiment, the current limiting component preferably adopts an adjustable resistor with an adjustable resistance value, so that the resistance value of the adjustable resistor can be correspondingly adjusted according to the size range in which the peak voltage may occur, thereby ensuring that the detection circuit can accurately detect the existence of the peak voltage.
In this embodiment, the optocoupler is a nanosecond high-speed optocoupler, so that a nanosecond signal can be detected, and the duration of the spike voltage is generally more than microsecond.
When the detection circuit works, the photoelectric coupler is provided with a conduction threshold value (usually guiding a current value), the detection range of peak voltage is preset through the current limiting component, the preset value of the conduction of the photoelectric coupler is set, the photoelectric coupler is conducted only when the current value generated by the peak voltage of the first pin of the photoelectric coupler is higher than the preset value, at the moment, the fourth pin of the photoelectric coupler outputs a corresponding alarm signal to the singlechip, the singlechip receives the alarm signal through the first port and calculates through the central processing unit, the potential of the alarm signal is the same as the VCC potential of the third pin of the photoelectric coupler, the singlechip immediately outputs a corresponding alarm signal to the alarm through the second port, the alarm is controlled to send an alarm, and the alarm is not stopped before the reset button does not act; after receiving the reset signal output by the reset button, the singlechip outputs an execution signal for stopping alarming to the alarm, and the alarm stops alarming after receiving the signal and waits for entering the next round of test. The processing flow of the singlechip is the most basic working flow, and is the working flow which can be realized by the existing singlechip, and the related working principle and design program of the singlechip can be known by a person skilled in the art.
The alarm is used for feeding back the existence of spike voltage. The signal transmission port of the alarm device is connected with the third port of the main controller through a signal transmission line, and the main controller outputs corresponding execution signals/instructions for alarming or stopping alarming to the alarm device through the third port, so that the alarm device is controlled to send out an alarm or stop alarming to enter a state to be started in the next round of test.
In this embodiment, the alarm is any one of an LED indicator, an audible and visual alarm, and an audible alarm. When the LED indicator lamp is adopted, the alarm sent out is that the LED continuously emits light; when the alarm is an audible and visual alarm, the alarm emits light and is accompanied by sound; in the case of an audible alarm, the alarm is audible. The type and model of the alarm can be selected according to actual needs.
The reset button is electrically connected with the power supply, and a signal transmission port of the reset button is connected with a second port of the main controller through a signal transmission line, so that the reset button outputs a reset signal to the main controller through the signal transmission line. In this embodiment, the reset button is in a normally open state, and is turned on by pressing the switch, and is released, and the reset button is opened to restore the normally open state. After the detection circuit finishes detection, the reset button is manually pressed, the reset button outputs a reset signal to the main controller through the signal transmission line, and after the main controller receives the reset signal, the main controller outputs a corresponding reset signal to the alarm to stop alarming of the alarm, so that the system reset is realized, and the normal test of the next round can be performed.
The circuit power supply is respectively and electrically connected with the main controller, the photoelectric coupler, the alarm and the reset button to supply electric energy for the circuit power supply. In this embodiment, the circuit power supply is an independent power supply, and the voltage of the voltage source or the current of the current source is independent without being controlled by the circuit.
The detection circuit can be connected with the working circuit of the equipment to be detected in a parallel mode, is equivalent to that a photoelectric coupler in the detection circuit is connected with the working circuit in parallel and shares the power supply to be detected, and the detection circuit is used as a part of the working circuit of the equipment to be detected and is used for directly detecting the peak voltage of the power supply to be detected of the equipment to be detected. When the power supply voltage peak detection circuit is used, before the equipment to be detected works, the detection circuit is firstly turned on to directly detect whether the peak voltage exists in the power supply to be detected, the operation is convenient and quick, parameters do not need to be regulated, and the detection result feedback is quick.
The present embodiment also provides a spike voltage detection system including the spike voltage detection circuit as described above. The detection system can be connected in the device to be detected and connected with the working circuit of the device to be detected in a parallel manner, and is used as a part of the working circuit of the device to be detected and directly used for detecting the working power supply of the device to be detected. In addition, the detection system can also be manufactured into an independent detection device or arranged in a certain multifunctional detection device, and is used as one circuit detection function of the multifunctional detection device for measuring the peak voltage of the working power supply of the device to be detected after being connected in parallel.
The embodiment also provides a spike voltage detection apparatus, the detection apparatus at least comprises an electrical detection system, and the electrical detection system at least comprises the spike voltage detection system.
In this embodiment, the electrical detection system includes a circuit voltage detection system, a circuit current detection system, a circuit resistance detection system, and the like. Therefore, the detection device can be only provided with the peak voltage detection system and has the function of detecting the peak voltage; other electrical detection systems may also be provided, thereby providing a multifunctional detection function. When the detection device adopts the spike voltage detection function to detect, the detection device needs to be connected in parallel with the device to be detected.
Example 1
The present embodiment provides a detection circuit for a spike voltage of a 24VDC power supply.
As shown in fig. 1-3, the specific circuit connection adopts the detection circuit, meanwhile, the main controller adopts the singlechip 2, the ports of the singlechip 2 all adopt GPIO ports, the photoelectric coupler adopts the high-speed photoelectric coupler 1, the current limiting component adopts the adjustable resistor 6, the alarm adopts the LED indicator lamp 3, the circuit power adopts the 3.3V-5V independent power supply 4, other interference is avoided being introduced, and the reset button 5 can select proper existing types and models according to actual needs.
In general, the peak voltage of the 24VDC power supply is about 50V, the on-state current of the common high-speed photoelectric coupler is generally I a =2ma, the on-state current threshold setting user can also select the on-state current threshold value I a =2ma according to the actual requirement, if the user needs to detect the peak voltage above 30V, i.e. U a =30v, then the resistance value r=u a/Ia =30v/2ma=15kΩ of the adjustable resistor 6.
Therefore, a user only needs to select and set the current conduction threshold value of the photoelectric coupler according to the peak voltage value range which can be reached by the power supply to be tested, whether the peak voltage exists or not is judged by utilizing whether the photoelectric coupler is conducted or not, and feedback is carried out through the on-off of the LED indicator lamp, so that the LED power supply is very convenient.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.
Claims (10)
1. The spike voltage detection circuit is characterized by comprising a main controller, a photoelectric coupler, a circuit power supply and an alarm;
The main controller is respectively and electrically connected with the photoelectric coupler and the alarm, and is used for detecting the peak of the signal transmitted by the photoelectric coupler and sending an alarm instruction to the alarm;
The circuit power supply is respectively and electrically connected with the main controller, the photoelectric coupler and the alarm;
The photoelectric coupler is used as an access port of the detection circuit and is used for being connected with a power supply to be detected, and the photoelectric coupler is provided with a current limiting component and is used for being connected between the access port of the photoelectric coupler and the power supply to be detected.
2. The spike voltage detection circuit of claim 1 wherein the optocoupler comprises a first pin, a second pin, a third pin and a fourth pin, the first pin and the second pin being respectively connected to the positive and negative poles of the power supply to be tested, the third pin being connected to the positive pole of the circuit power supply;
The main controller comprises a first port and a second port for signal transmission, the first port is connected with the fourth pin, and the second port is connected with the signal transmission port of the alarm;
The current limiting component is connected between the first pin and the positive electrode of the power supply to be tested.
3. The spike voltage detection circuit of claim 1 wherein the current limiting component is an adjustable resistor of adjustable resistance value.
4. The spike voltage detection circuit of claim 1 wherein the optocoupler is a nanosecond high speed optocoupler.
5. The spike voltage detection circuit of claim 1 wherein the alarm is any one of an LED indicator light, an audible and visual alarm, and an audible alarm.
6. The spike voltage detection circuit of claim 1 wherein the detection circuit further comprises a reset button, the reset button being electrically connected to a power source;
The main controller comprises a third port for signal transmission, and the third port is connected with the signal transmission port of the reset button.
7. The spike voltage detection circuit of claim 1 wherein the circuit power supply is a stand-alone power supply.
8. The spike voltage detection circuit of any of claims 1-7 wherein the power supply under test is connected in series with an operating circuit of a device under test, the detection circuit being connected in parallel with the operating circuit to the power supply under test.
9. A spike voltage detection system, characterized in that the detection system comprises a spike voltage detection circuit according to any of claims 1-7.
10. A spike voltage detection apparatus comprising at least one electrical detection system, wherein the electrical detection system comprises at least the spike voltage detection system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627226.1U CN221303408U (en) | 2023-09-27 | 2023-09-27 | Peak voltage detection circuit, system and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627226.1U CN221303408U (en) | 2023-09-27 | 2023-09-27 | Peak voltage detection circuit, system and equipment |
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| CN221303408U true CN221303408U (en) | 2024-07-09 |
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| CN202322627226.1U Active CN221303408U (en) | 2023-09-27 | 2023-09-27 | Peak voltage detection circuit, system and equipment |
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