CN218995589U - Delay time detection circuit - Google Patents
Delay time detection circuit Download PDFInfo
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- CN218995589U CN218995589U CN202223356286.6U CN202223356286U CN218995589U CN 218995589 U CN218995589 U CN 218995589U CN 202223356286 U CN202223356286 U CN 202223356286U CN 218995589 U CN218995589 U CN 218995589U
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Abstract
The utility model discloses a delay time detection circuit, which comprises a A, B, C three-phase input port, a delay module and a delay control module, wherein the three-phase alternating current is connected to an alternating current contactor through the delay module; the positive electrode of the direct-current low-voltage storage battery is connected to the positive electrode terminal of the contactor attraction signal, and the negative electrode of the low-voltage storage battery is connected to the negative electrode terminal of the contactor attraction signal through a resistor R2; the positive electrode of the direct-current low-voltage storage battery is connected between the negative electrode of the low-voltage storage battery and the resistor R2 through the resistor R1; a collecting point c is arranged on a connecting line between the resistor R1 and the resistor R2, a collecting point a is arranged on an indirect line between a positive terminal of a contactor sucking signal and a positive electrode of the direct-current low-voltage storage battery, a collecting point b is arranged on an indirect line between the resistor R2 and a negative terminal of the contactor sucking signal, the collecting points a and b are respectively connected to channels CH1 and CH2 of the oscilloscope, and the collecting point c is connected to a grounding end of the oscilloscope. And detecting the delay time through an oscillograph waveform.
Description
Technical Field
The utility model relates to the technical field of electronics, in particular to a delay time detection circuit.
Background
Along with the development of modern electronic technology, the delay starting circuit is more and more widely applied to modern electronic products, delay time control is also important, and the excellent performance of the delay starting circuit determines the normal operation of the whole product circuit and also is the starting protection of the whole circuit. The delay time of the general delay chip or delay circuit can be set according to the needs, and the delay chip or delay circuit can be used in a plurality of electronic circuits after the setting is finished, for example, patent: delay circuits and switching power supply controllers 201120425440.3 having the delay circuits, delay circuits and methods and apparatus 201010580808.3 for controlling the delay circuits to compensate for supply voltage drift, and the like.
The circuit integration level of modern electronic products is higher and higher, particularly for those high-power products, under the operation of high voltage and high current, the delay starting is the most effective protection to the circuit, and the detection and the setting of the delay time are also main evaluation indexes. However, the delay time in the prior art is generally considered to be the set time after being directly set, but in many cases, the set delay time may fluctuate due to various reasons such as environment and transportation, so that the delay time needs to be detected.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides a delay time detection circuit, can solve the defects that the prior art does not accurately and reliably test a circuit, and provides a delay time measurement circuit based on an oscilloscope.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the delay time detection circuit comprises an alternating current contactor, a delay module, a direct current storage battery and an oscilloscope, wherein three-phase alternating current is connected to a A, B, C three-phase input port of the alternating current contactor through the delay module; the positive electrode of the direct-current low-voltage storage battery is connected to the positive electrode terminal of the contactor attraction signal, and the negative electrode of the low-voltage storage battery is connected to the negative electrode terminal of the contactor attraction signal through a resistor R2; the positive electrode of the direct-current low-voltage storage battery is connected between the negative electrode of the low-voltage storage battery and the resistor R2 through the resistor R1; a collecting point c is arranged on a connecting line between the resistor R1 and the resistor R2, a collecting point a is arranged on an indirect line between a positive terminal of a contactor sucking signal and a positive electrode of the direct-current low-voltage storage battery, a collecting point b is arranged on an indirect line between the resistor R2 and a negative terminal of the contactor sucking signal, the collecting points a and b are respectively connected to channels CH1 and CH2 of the oscilloscope, and the collecting point c is connected to a grounding end of the oscilloscope.
The low-voltage storage battery is a 5V low-voltage storage battery.
A circuit breaker Q1 is provided between the three-phase alternating current and the alternating current contactor for realizing input control of the alternating current.
The oscilloscope is connected with a computer, and the computer is connected with the printer.
And the mobile phone terminal is connected with the Internet of things module through a network and is used for acquiring oscillograph waveform data.
The signal bits LC1-D12Q7C of the ac contactor.
The utility model has the advantages that: the accurate and reliable delay time detection can be realized through a simple circuit, and basic parameter data is provided for the use of delay chips in the technical field of electronics; the circuit is simple, the device is small in size, the cost is low, and the working performance is reliable. When in use, the delay time can be accurately adjusted by only detecting the waveform time difference between the points a and b.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
fig. 1 is a schematic diagram of a delay detection circuit according to the present utility model.
Detailed Description
The following detailed description of the utility model refers to the accompanying drawings, which illustrate preferred embodiments of the utility model in further detail.
The utility model provides a novel delay detection circuit which helps research, development and debugging personnel set delay time conveniently and rapidly. Including direct current output signal 5v+/5V-, breaker iC65N 1p D6a, delay contact LAD-T2, ac contactor LC1-D12Q7C, three-phase ac input, etc. Three-phase alternating current input generates delay after passing through a delay contact LAD-T2, after the delay arrives, the alternating current contactor LC1-D12Q7C is attracted to generate a contactor attraction signal, two paths of direct current output signals 5v+ have waveform delay through oscilloscope measurement, the time of the waveform delay can be calculated based on the waveform, and the corresponding time is the delay time of a delay module; the delay time is the delay time of the main circuit, the accuracy can reach the ms level, and the delay time can be accurately and effectively controlled.
According to the scheme, only a 5V direct current source is added at the input end, the delay time of the delay contact is set according to the requirement, and the 5V voltage rising time difference is measured through the feedback of the closing signal of the main contactor, so that the aim of accurate detection is achieved, the whole circuit structure is very simple, the cost is low, the implementation is convenient, and the engineering technician can conveniently and rapidly realize the function of measuring the delay time. The specific circuit structure is as follows:
as shown in FIG. 1, the delay time detection circuit comprises an alternating current contactor, a delay module, a direct current storage battery, an oscilloscope and a circuit breaker, wherein the circuit breaker Q1 adopts iC65N 1P D6A, a delay contact type LAD-T2 and an alternating current contactor type LC1-D12Q7C;
the three-phase alternating current is connected to a A, B, C three-phase input port of the alternating current contactor through the time delay module; the two delay terminals of the delay module are specifically connected to A, B two phases for inputting three-phase power, and meanwhile, a breaker Q1 is arranged between the alternating current and the three-phase power input end of the alternating current contactor and used for controlling on and off testing, so that input control of the alternating current is realized.
The positive electrode of the direct-current low-voltage storage battery is connected to the positive electrode terminal of the contactor attraction signal, and the negative electrode of the low-voltage storage battery is connected to the negative electrode terminal of the contactor attraction signal through a resistor R2; the positive electrode of the direct-current low-voltage storage battery is connected between the negative electrode of the low-voltage storage battery and the resistor R2 through the resistor R1; a collecting point c is arranged on a connecting line between the resistor R1 and the resistor R2, a collecting point a is arranged on an indirect line between a positive terminal of a contactor sucking signal and a positive electrode of the direct-current low-voltage storage battery, a collecting point b is arranged on an indirect line between the resistor R2 and a negative terminal of the contactor sucking signal, the collecting points a and b are respectively connected to channels CH1 and CH2 of the oscilloscope, and the collecting point c is connected to a grounding end of the oscilloscope. The low-voltage storage battery is a 5V storage battery, and the positive electrode and the negative electrode of the low-voltage storage battery are respectively 5V+ and 5V-.
The working principle is as follows: the oscillograph actually collects and displays voltage waveforms at the point a and the point b, the positive electrode and the negative electrode of the actuation signal are connected together after the actuation of the alternating current contactor, waveform signals at the two ends a and the two ends b are different before and after the actuation, delay time of one waveform is generated, a person skilled in the art can calculate the delay time through the delay waveform output by the oscillograph, the precision can reach the ms level, and the delay time is calculated more accurately. When the circuit breaker is used, the circuit breaker is pressed down after the circuit breaker is connected together according to the connection relation, the oscillograph waveform is observed, and then the delay time can be calculated based on the delay time before and after the oscillograph waveform.
Because the oscilloscope delay time is calculated manually, the waveform is generally required to be printed out and calculated more conveniently, so the oscilloscope is connected with a computer and the computer is connected with a printer, and when the delay waveform is obtained, the printing of the delay waveform is realized through the computer, so that the corresponding waveform delay time can be checked and calculated rapidly through the paper waveform.
In a preferred embodiment, in order to conveniently store waveform data of recording delay time and calculate corresponding waveform data, along with development of the internet of things, the application adopts an oscilloscope with an internet of things wave speed, an internet of things module is arranged in the oscilloscope, and a mobile phone terminal is connected with the internet of things module through a network and is used for acquiring the oscillograph waveform data, so that acquisition, calculation, storage backup and the like are conveniently checked at any time in the mobile phone.
The delay time detection circuit is simple in detection circuit, low in cost, convenient and quick to realize and high in precision, and can help research, development and debugging personnel to conveniently and quickly set delay time as only the contactor, the circuit breaker, the oscilloscope, the two resistors and the low-voltage battery are needed.
It is obvious that the specific implementation of the present utility model is not limited by the above-mentioned modes, and that it is within the scope of protection of the present utility model only to adopt various insubstantial modifications made by the method conception and technical scheme of the present utility model.
Claims (6)
1. A delay time detection circuit is characterized in that: the device comprises an alternating-current contactor, a time delay module, a direct-current storage battery and an oscilloscope, wherein three-phase alternating current is connected to a A, B, C three-phase input port of the alternating-current contactor through the time delay module; the positive electrode of the direct-current low-voltage storage battery is connected to the positive electrode terminal of the contactor attraction signal, and the negative electrode of the low-voltage storage battery is connected to the negative electrode terminal of the contactor attraction signal through a resistor R2; the positive electrode of the direct-current low-voltage storage battery is connected between the negative electrode of the low-voltage storage battery and the resistor R2 through the resistor R1; a collecting point c is arranged on a connecting line between the resistor R1 and the resistor R2, a collecting point a is arranged on an indirect line between a positive terminal of a contactor sucking signal and a positive electrode of the direct-current low-voltage storage battery, a collecting point b is arranged on an indirect line between the resistor R2 and a negative terminal of the contactor sucking signal, the collecting points a and b are respectively connected to channels CH1 and CH2 of the oscilloscope, and the collecting point c is connected to a grounding end of the oscilloscope.
2. A delay time detecting circuit as claimed in claim 1, wherein: the low-voltage storage battery is a 5V low-voltage storage battery.
3. A delay time detecting circuit as claimed in claim 2, wherein: a circuit breaker Q1 is provided between the three-phase alternating current and the alternating current contactor for realizing input control of the alternating current.
4. A delay time detecting circuit as claimed in any one of claims 1 to 3, wherein: the oscilloscope is connected with a computer, and the computer is connected with the printer.
5. A delay time detecting circuit as claimed in any one of claims 1 to 3, wherein: the oscilloscope is internally provided with an Internet of things module, and the mobile phone terminal is connected with the Internet of things module through a network and is used for acquiring oscillograph waveform data.
6. A delay time detecting circuit as claimed in any one of claims 1 to 3, wherein: the signal bits LC1-D12Q7C of the ac contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223356286.6U CN218995589U (en) | 2022-12-14 | 2022-12-14 | Delay time detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223356286.6U CN218995589U (en) | 2022-12-14 | 2022-12-14 | Delay time detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218995589U true CN218995589U (en) | 2023-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223356286.6U Active CN218995589U (en) | 2022-12-14 | 2022-12-14 | Delay time detection circuit |
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| Country | Link |
|---|---|
| CN (1) | CN218995589U (en) |
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2022
- 2022-12-14 CN CN202223356286.6U patent/CN218995589U/en active Active
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