CN110609199A - Zero-line and live-line detection and identification method, device and system - Google Patents
Zero-line and live-line detection and identification method, device and system Download PDFInfo
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Abstract
The invention discloses a zero and live line detection and identification method, which comprises the following steps: acquiring a fire wire end measuring signal and a zero wire end measuring signal which are converted by an analog-to-digital converter; judging whether the fire wire end measuring signal and the zero line end measuring signal are greater than a preset reference threshold or not; when the live wire end measuring signal and the zero line end measuring signal are smaller than the reference threshold, determining that the live wire is open-circuited; when the measuring signal of the live wire end and the measuring signal of the zero line end are larger than the reference threshold, judging whether the absolute value of the difference value of the measuring signal of the live wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not; and if the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is smaller than the fluctuation threshold, determining that the zero line is open-circuited. The invention also discloses a zero-live wire detection and identification device and a zero-live wire identification system with the detection function. The method can determine whether the live wire is open-circuited, whether the zero line is open-circuited and whether the line wiring is abnormal by one-time measurement, thereby improving the detection efficiency; whether the socket can be normally used or not is easily distinguished, and the socket is easy to popularize.
Description
Technical Field
The invention relates to the field of zero and live line detection, in particular to a zero and live line detection and identification method, device and system.
Background
With the development of the electronic industry, the types of sockets tend to be diversified, wherein the zero-live wire connection of the two-hole socket is easy to be confused, and because the normal switch controls the live wire, if the connection is wrong, the switch is turned off and only the zero wire is cut off, and the live wire is still electrified, the electric shock accident is easy to cause; meanwhile, some electric appliances have requirements on the access of the zero line and the live line and cannot be reversely connected, if the connection is reversely connected, certain functions cannot be achieved, and even the electric appliances are damaged; therefore, the detection of the national standard two-hole socket is often needed before the socket is installed and important electric devices are used and during maintenance operation.
At present, a detection device for a national standard two-hole socket is provided with a common test pencil, the state of zero and live line induction signals of the two holes of the socket is respectively tested by inserting the test pencil into jacks of the socket in turn, and the zero and live lines of the socket are distinguished by artificially comparing indication state effects; the detection efficiency is low, and secondly, a detection device configured for maintenance personnel must have a self-detection function, otherwise, because the self fault of the device is inserted into a live wire hole and no response is given, the operation personnel mistakenly think that the hole is connected with a zero wire, and serious potential safety hazard is caused;
in addition, the conventional detection device cannot provide open circuit abnormity detection, the conclusion can be reached only after the detection is carried out for many times by depending on the experience of maintenance personnel, and the maintenance personnel often neglect the problems of open circuit abnormity and the like when detecting through the conventional detection device, so that the condition of secondary maintenance is caused, and time and labor are wasted.
Disclosure of Invention
In order to solve the problems, the invention discloses a method, a device and a system for detecting and identifying zero and live wires.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a zero-fire line detection and identification method comprises the following steps:
acquiring a fire wire end measuring signal and a zero wire end measuring signal which are converted by an analog-to-digital converter;
judging whether the fire wire end measuring signal and the zero line end measuring signal are greater than a preset reference threshold or not;
when the live wire end measuring signal and the zero line end measuring signal are smaller than the reference threshold, determining that the live wire is open-circuited;
when the measuring signal of the live wire end and the measuring signal of the zero line end are larger than the reference threshold, judging whether the absolute value of the difference value of the measuring signal of the live wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not;
and if the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is smaller than the fluctuation threshold, determining that the zero line is open-circuited.
When judging whether the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is smaller than a preset fluctuation threshold, the method further comprises the following steps:
if the absolute value of the difference value of the live wire end measuring signal and the zero line end measuring signal is larger than the fluctuation threshold, comparing the live wire end measuring signal with the zero line end measuring signal;
when the measurement signal of the fire wire end is greater than the measurement signal of the zero line end, the normal wiring of the line is determined;
and when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, determining that the wiring of the line is abnormal.
A zero line and live line detection and identification device comprising:
the signal collection module is used for acquiring the fire wire end measurement signal and the zero wire end measurement signal which are converted by the analog-to-digital converter;
the first condition judgment module is used for judging whether the measurement signal of the fire wire end and the measurement signal of the zero wire end are greater than a preset reference threshold or not;
the first open circuit determining module is used for determining the open circuit of the live wire when the measurement signal of the live wire end and the measurement signal of the zero wire end are smaller than the reference threshold;
the second condition judgment module is used for judging whether the absolute value of the difference value of the measuring signal of the fire wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not when the measuring signal of the fire wire end and the measuring signal of the zero line end are larger than the reference threshold;
and the second open circuit determining module is used for determining that the zero line is open circuit when the absolute value of the difference value of the measuring signal of the fire line end and the measuring signal of the zero line end is smaller than the fluctuation threshold.
The zero fire line detection and identification device further comprises:
the signal comparison module is used for comparing the sizes of the fire wire end measuring signal and the zero line end measuring signal when the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is greater than the fluctuation threshold;
the wiring judgment module is used for determining that the wiring of the line is normal when the measurement signal of the fire wire end is greater than the measurement signal of the zero line end; and when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, determining that the wiring of the line is abnormal.
A null line and live line recognition system with detection function, comprising: the signal conversion unit, any one of the zero-fire line detection and identification device and the signal prompt module are connected in sequence; the signal conversion unit comprises a first analog-to-digital converter and a second analog-to-digital converter, wherein the first analog-to-digital converter and the second analog-to-digital converter are respectively connected to a first signal input end and a second signal input end of the zero-live wire detection and identification device; the input ends of the first analog-to-digital converter and the second analog-to-digital converter are respectively connected with a first antenna which can extend into the jack of the socket and is used for detecting a live wire and a second antenna which can extend into the jack of the socket and is used for detecting a zero wire.
The signal prompting module comprises a first indicator light and a second indicator light; the first indicator light and the second indicator light are respectively connected to a first output end and a second output end of the zero-live wire detection and identification device.
The signal prompt module also comprises a buzzer; the buzzer is connected with the third output end of the zero-live line detection and identification device through an NPN type triode, the emitter of the NPN type triode is grounded, and the collector and the base of the NPN type triode are respectively connected with the third output ends of the buzzer and the zero-live line detection and identification device.
The input ends of the first analog-to-digital converter and the second analog-to-digital converter are connected with a first divider resistor and a second divider resistor which have the same resistance values; and a capacitor is connected in parallel to the second voltage-dividing resistor.
The signal prompt module further comprises a third indicator light and a fourth indicator light which are respectively connected with a fourth output end and a fifth output end of the zero-live wire detection and identification device.
The first indicator light and the second indicator light are red light emitting diodes, and the third indicator light and the fourth indicator light are green light emitting diodes.
The invention has the beneficial effects that: the invention has reasonable and ingenious design, and can determine whether the live wire is open-circuited, the zero line is open-circuited and the line wiring is abnormal by one-time measurement; the detection efficiency is improved, and secondary detection is avoided; through the arrangement of the first antenna and the second antenna, the left side jack and the right side jack of the socket can be measured simultaneously, misleading to a user due to no feedback is avoided, the potential safety hazard problem of a conventional test pencil is solved, self-checking is not needed, time is saved, and meanwhile cost is reduced; in addition, even non-professional personnel can easily distinguish whether the socket can be normally used, the application range of the product is improved, and the socket is easy to popularize.
The invention is further described with reference to the following detailed description and accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method for detecting and identifying a null line and a live line in an embodiment of the present invention;
fig. 2 is a circuit configuration diagram of the null and live wire recognition system with detection function according to an embodiment of the present invention.
Detailed Description
In an embodiment, referring to fig. 1 to fig. 2, a method for detecting and identifying a zero line includes:
step 101, acquiring a fire wire end measuring signal and a zero wire end measuring signal which are converted by an analog-to-digital converter;
step 102, judging whether the measurement signal of the fire wire end and the measurement signal of the zero wire end are larger than a preset reference threshold;
103, determining that the live wire is open-circuited when the live wire end measuring signal and the zero line end measuring signal are smaller than a reference threshold;
104, when the measuring signal of the live wire end and the measuring signal of the zero line end are larger than the reference threshold, judging whether the absolute value of the difference value of the measuring signal of the live wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold;
and 105, determining that the zero line is open-circuited if the absolute value of the difference value of the fire line end measuring signal and the zero line end measuring signal is smaller than the fluctuation threshold.
When judging whether the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is smaller than a preset fluctuation threshold, the method further comprises the following steps:
step 106, comparing the sizes of the fire wire end measuring signal and the zero line end measuring signal if the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is greater than the fluctuation threshold;
step 107, when the measurement signal of the fire wire end is larger than the measurement signal of the zero wire end, determining that the wiring of the line is normal;
and 108, when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, determining that the wiring of the line is abnormal.
Specifically, a fire wire end measuring signal and a zero line end measuring signal are measured through a first antenna and a second antenna respectively;
the live wire end and the zero wire end are assumed according to the national standard, for example, in China, according to the regulations of left zero and right fire, the left side jack of the socket is regarded as the live wire end, and the right side jack of the socket is regarded as the zero wire end;
secondly, the reference threshold is set according to voltage standards of different national regions and is an accurate numerical value, in a preferred embodiment, a plurality of reference thresholds are preset, and before acquiring the live wire end measuring signal and the zero wire end measuring signal which are converted by the analog-to-digital converter, a proper reference threshold is selected according to the national region where a worker is located; in addition, the setting principle of the reference threshold is as follows: the national standard socket is equivalent to an alternating power supply, an alternating electric field is formed around the national standard socket, and the antenna extends into the alternating electric field, so that corresponding alternating voltage can be induced; meanwhile, because factors such as environment and the like are interfered by other non-test target electric fields and the like, misleading signals are generated, but during testing, the antenna is inserted into the jack of the socket and protected by the shell of the socket, so that the interference signals can be reduced to the minimum, therefore, a reference threshold is set, when the test signals are smaller than the reference threshold, the test signals are regarded as the interference signals, and the signals are not transmitted to the next step, so that the subsequent judgment is not influenced; if the reference threshold is not set, the interference signal is allowed to continue to be transmitted, and then subsequent judgment is interfered, so that serious potential safety hazard is brought.
In addition, the fluctuation threshold is set according to the distance between two holes of the socket and is an accurate numerical value, the smaller the hole distance is, the closer the zero line end measuring signal is to the fire line end measuring signal when the zero line is broken, and the smaller the set fluctuation threshold is.
Finally, the zero-live wire of the socket is detected according to the zero-live wire detection and identification method, and whether the live wire is open-circuited, whether the zero line is open-circuited and whether the line connection is abnormal can be determined by one-time measurement; the detection efficiency is improved, all abnormal problems of all sockets can be checked through one-time detection, trouble and labor are saved, and the condition of secondary maintenance is avoided.
A zero line and live line detection and identification device comprising:
the signal collection module is used for acquiring the fire wire end measurement signal and the zero wire end measurement signal which are converted by the analog-to-digital converter;
the first condition judgment module is used for judging whether the measurement signal of the fire wire end and the measurement signal of the zero wire end are greater than a preset reference threshold or not;
the first open circuit determining module is used for determining the open circuit of the live wire when the measurement signal of the live wire end and the measurement signal of the zero wire end are smaller than the reference threshold;
the second condition judgment module is used for judging whether the absolute value of the difference value of the measuring signal of the fire wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not when the measuring signal of the fire wire end and the measuring signal of the zero line end are larger than the reference threshold;
and the second open circuit determining module is used for determining that the zero line is open circuit when the absolute value of the difference value of the measuring signal of the fire line end and the measuring signal of the zero line end is smaller than the fluctuation threshold.
The zero fire line detection and identification device further comprises:
the signal comparison module is used for comparing the sizes of the fire wire end measuring signal and the zero line end measuring signal when the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is greater than the fluctuation threshold;
the wiring judgment module is used for determining that the wiring of the line is normal when the measurement signal of the fire wire end is greater than the measurement signal of the zero line end; and when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, determining that the wiring of the line is abnormal.
Specifically, this zero line and live wire detects recognition device, the branch work is detailed, the operation is smooth, through the signal collection module, first condition judgment module, first open circuit confirms the module, second condition judgment module, second open circuit confirms the module, the signal compares the module, wiring judgement module cooperation operation, only need collect the live wire end measuring signal once, zero line end measuring signal just can obtain the live wire and open circuit, whether the zero line is opened a way, whether the circuit wiring is unusual the result, shorten user's check-out time by a wide margin, the efficiency is improved, and the thinking time of maintainer has been saved, reduce the error rate.
A null line and live line recognition system with detection function, comprising: the signal conversion unit, any one of the zero-fire line detection and identification device and the signal prompt module are connected in sequence; the signal conversion unit comprises a first analog-to-digital converter (ADC _ L) and a second analog-to-digital converter (ADC _ N), wherein the first analog-to-digital converter (ADC _ L) and the second analog-to-digital converter (ADC _ N) are respectively connected to a first signal input end and a second signal input end of the zero-fire line detection and identification device 2; the input ends of the first analog-to-digital converter (ADC _ L) and the second analog-to-digital converter (ADC _ N) are respectively connected with a first antenna capable of extending into the socket jack and used for detecting a live wire and a second antenna used for detecting a zero wire.
Specifically, through the arrangement of the first antenna and the second antenna, the left side jack and the right side jack of the socket can be measured simultaneously, and through the arrangement of the first analog-to-digital converter (ADC _ L) and the second analog-to-digital converter (ADC _ N), a live wire end measuring signal and a zero line end measuring signal which are obtained through measurement of the first antenna and the second antenna can be simultaneously converted into digital signals and transmitted to the zero live wire detection and identification device 2, the process is not interfered with each other, and the accuracy of the measuring result can be ensured; the first antenna and the second antenna are sleeved with insulating protective sleeves which prevent the first antenna and the second antenna from directly contacting a power supply.
In addition, compared with the conventional test pencil and the conventional detection method, firstly, the results of whether the live wire is open-circuited, whether the zero wire is open-circuited and whether the line connection is abnormal can be obtained only by one-time measurement, and the results are fed back by the signal prompt module, so that the efficiency is high, and even if a professional maintenance worker can know the abnormal condition of the target to be tested from the feedback of the signal prompt module; secondly, by means of simultaneous measurement of the first antenna and the second antenna, even if a user carelessly takes measures, the system can not normally operate and can not feed back to the user through the signal prompting module when the system is not powered on or a power supply of the system fails; the misleading such as open circuit of the socket can not be brought to the user because of not having the feedback, the potential safety hazard has been reduced to a very big degree, consequently for conventional test pencil, this zero live wire identification system with detect function need not to dispose self-checking function and also can guarantee not misleading maintenance personal, and has solved the potential safety hazard problem of conventional test pencil.
The signal prompting module comprises a first indicator light and a second indicator light; the first indicator light and the second indicator light are respectively connected to the first output end and the second output end of the zero-live wire detection and identification device 2.
The signal prompt module also comprises a buzzer; the buzzer is connected with the third output end of the zero-live line detection and identification device 2 through an NPN type triode, the emitter of the NPN type triode is grounded, and the collector and the base of the NPN type triode are respectively connected with the third output ends of the buzzer and the zero-live line detection and identification device 2.
Specifically, the NPN type triode has a switching function, and the zero-live wire detection and identification device 2 controls the NPN type triode to be connected with the buzzer, so that the buzzer alarms to play a role in warning a user;
when the zero-live wire detection and identification device 2 judges that the live wire, the zero wire and the line of the target to be detected are open-circuited, the buzzer is connected through the NPN type triode, and the buzzer alarms.
The input ends of the first analog-to-digital converter (ADC _ L) and the second analog-to-digital converter (ADC _ N) are connected with a first voltage dividing resistor and a second voltage dividing resistor which have the same resistance values; and a capacitor is connected in parallel to the second voltage-dividing resistor.
Specifically, the voltage dividing resistor is connected with a capacitor in parallel to form a filter circuit, so that high-frequency interference is reduced, and the detection result is more accurate.
The signal prompt module further comprises a third indicator light and a fourth indicator light which are respectively connected with a fourth output end and a fifth output end of the zero-live wire detection and identification device 2.
The first indicator light and the second indicator light are red light emitting diodes, and the third indicator light and the fourth indicator light are green light emitting diodes.
In a preferred embodiment, the signal prompt module further comprises a display screen, and the display screen is connected with the zero-fire line detection and identification device 2 and is used for displaying the operation result of the zero-fire line detection and identification device 2; the operation result is displayed in a text form.
The process of detecting the national standard socket by the zero-live wire identification system with the detection function is as follows: the system is powered on when being started, the first antenna and the second antenna are respectively inserted into a right side jack and a left side jack of the socket according to the national standard, and a live wire end measuring signal and a zero wire end measuring signal are obtained;
the live wire end measuring signal and the zero line end measuring signal are converted into digital signals through a first analog-to-digital converter (ADC _ L) and a second analog-to-digital converter (ADC _ N) respectively and then are transmitted to a zero live wire detection and identification device 2, and the live wire end measuring signal and the zero line end measuring signal which are converted through the analog-to-digital converters are obtained through a signal collecting module; then, whether the measurement signal of the fire wire end and the measurement signal of the zero wire end are larger than a preset reference threshold or not is judged through a first condition judgment module; then, when the measurement signal of the live wire end and the measurement signal of the zero wire end are smaller than the reference threshold, a first open circuit determining module determines that the live wire is open and controls a buzzer to alarm, and at the moment, a first indicator light, a second indicator light, a third indicator light and a fourth indicator light are not lighted; then, judging whether the absolute value of the difference value of the measuring signal of the fire wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not when the measuring signal of the fire wire end and the measuring signal of the zero line end are larger than the reference threshold through a second condition judgment module; then, when the absolute value of the difference value between the measurement signal of the fire wire end and the measurement signal of the zero wire end is smaller than the fluctuation threshold, the second open circuit determining module determines that the zero wire is open, controls the first indicator light and the second indicator light to light red light and drives the buzzer to alarm; comparing the sizes of the live wire end measuring signal and the zero line end measuring signal by a signal comparison module when the absolute value of the difference value of the live wire end measuring signal and the zero line end measuring signal is greater than a fluctuation threshold; finally, when the measurement signal of the fire wire end is greater than the measurement signal of the zero wire end through the wiring judgment module, the normal wiring of the line is determined, the first indicator lamp is controlled to light red light, and the fourth indicator lamp lights green light; when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, the abnormal wiring of the line is determined, the third indicator light is controlled to light green light, the second indicator light lights red light, and the buzzer is driven to give an alarm.
When a user detects the national standard socket through the zero-live wire recognition system with the detection function, whether the socket is abnormal or not can be known according to whether the buzzer alarms or not; and distinguishing abnormal types according to the lighting conditions of the first indicator light, the second indicator light, the third indicator light and the fourth indicator light. Even non-professional personnel can easily distinguish whether the socket can be normally used, so that the application range of the product is improved, and the socket is easy to popularize; in a preferred embodiment, the anomaly category can also be distinguished by text displayed on the screen.
The invention has reasonable and ingenious design, and can determine whether the live wire is open-circuited, the zero line is open-circuited and the line wiring is abnormal by one-time measurement; the detection efficiency is improved, and secondary detection is avoided; through the arrangement of the first antenna and the second antenna, the left side jack and the right side jack of the socket can be measured simultaneously, misleading to a user due to no feedback is avoided, the potential safety hazard problem of a conventional test pencil is solved, self-checking is not needed, time is saved, and meanwhile cost is reduced; in addition, even non-professional personnel can easily distinguish whether the socket can be normally used, the application range of the product is improved, and the socket is easy to popularize.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the invention using the above disclosed technical means and teachings, or can modify equivalent embodiments with equivalent variations, without departing from the scope of the invention. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the technical scheme of the present invention shall be covered by the protection scope of the present invention.
Claims (10)
1. A zero-fire line detection and identification method is characterized by comprising the following steps:
acquiring a fire wire end measuring signal and a zero wire end measuring signal which are converted by an analog-to-digital converter;
judging whether the fire wire end measuring signal and the zero line end measuring signal are greater than a preset reference threshold or not;
when the live wire end measuring signal and the zero line end measuring signal are smaller than the reference threshold, determining that the live wire is open-circuited;
when the measuring signal of the live wire end and the measuring signal of the zero line end are larger than the reference threshold, judging whether the absolute value of the difference value of the measuring signal of the live wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not;
and if the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is smaller than the fluctuation threshold, determining that the zero line is open-circuited.
2. The method for detecting and identifying a live wire and zero wire according to claim 1, wherein when determining whether the absolute value of the difference between the live wire end measurement signal and the zero wire end measurement signal is smaller than a preset fluctuation threshold, the method further comprises:
if the absolute value of the difference value of the live wire end measuring signal and the zero line end measuring signal is larger than the fluctuation threshold, comparing the live wire end measuring signal with the zero line end measuring signal;
when the measurement signal of the fire wire end is greater than the measurement signal of the zero line end, the normal wiring of the line is determined;
and when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, determining that the wiring of the line is abnormal.
3. A zero line and fire line detection and identification device is characterized by comprising:
the signal collection module is used for acquiring the fire wire end measurement signal and the zero wire end measurement signal which are converted by the analog-to-digital converter;
the first condition judgment module is used for judging whether the measurement signal of the fire wire end and the measurement signal of the zero wire end are greater than a preset reference threshold or not;
the first open circuit determining module is used for determining the open circuit of the live wire when the measurement signal of the live wire end and the measurement signal of the zero wire end are smaller than the reference threshold;
the second condition judgment module is used for judging whether the absolute value of the difference value of the measuring signal of the fire wire end and the measuring signal of the zero line end is smaller than a preset fluctuation threshold or not when the measuring signal of the fire wire end and the measuring signal of the zero line end are larger than the reference threshold;
and the second open circuit determining module is used for determining that the zero line is open circuit when the absolute value of the difference value of the measuring signal of the fire line end and the measuring signal of the zero line end is smaller than the fluctuation threshold.
4. The apparatus for detecting and identifying a null line and a live line according to claim 3, further comprising:
the signal comparison module is used for comparing the sizes of the fire wire end measuring signal and the zero line end measuring signal when the absolute value of the difference value of the fire wire end measuring signal and the zero line end measuring signal is greater than the fluctuation threshold;
the wiring judgment module is used for determining that the wiring of the line is normal when the measurement signal of the fire wire end is greater than the measurement signal of the zero line end; and when the measurement signal of the fire wire end is smaller than the measurement signal of the zero wire end, determining that the wiring of the line is abnormal.
5. A null line and live line identification system with a detection function is characterized by comprising: the zero-fire line detection and identification device and the signal prompt module are sequentially connected;
the signal conversion unit comprises a first analog-to-digital converter and a second analog-to-digital converter, wherein the first analog-to-digital converter and the second analog-to-digital converter are respectively connected to a first signal input end and a second signal input end of the zero-live wire detection and identification device;
the input ends of the first analog-to-digital converter and the second analog-to-digital converter are respectively connected with a first antenna which can extend into the jack of the socket and is used for detecting a live wire and a second antenna which can extend into the jack of the socket and is used for detecting a zero wire.
6. The system for identifying a null line and a live line with a detection function according to claim 5, wherein the signal prompt module comprises a first indicator light and a second indicator light;
the first indicator light and the second indicator light are respectively connected to a first output end and a second output end of the zero-live wire detection and identification device.
7. The system for identifying a null line and a live line with a detection function according to claim 6, wherein the signal prompt module further comprises a buzzer;
the buzzer is connected with the third output end of the zero-live line detection and identification device through an NPN type triode, the emitter of the NPN type triode is grounded, and the collector and the base of the NPN type triode are respectively connected with the third output ends of the buzzer and the zero-live line detection and identification device.
8. The system for identifying the null line and the live line with the detection function as claimed in claim 5, wherein the input ends of the first analog-to-digital converter and the second analog-to-digital converter are respectively connected with a first voltage dividing resistor and a second voltage dividing resistor which have the same resistance;
and a capacitor is connected in parallel to the second voltage-dividing resistor.
9. The null and live wire recognition system with the detection function as claimed in claim 6, wherein the signal prompt module further comprises a third indicator light and a fourth indicator light respectively connected to a fourth output end and a fifth output end of the null and live wire detection recognition device.
10. The fire and null line recognition system with detection function of claim 9, wherein the first indicator light and the second indicator light are red light emitting diodes, and the third indicator light and the fourth indicator light are green light emitting diodes.
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| CN201910868959.XA CN110609199A (en) | 2019-09-16 | 2019-09-16 | Zero-line and live-line detection and identification method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580019A (en) * | 2020-06-24 | 2020-08-25 | 优利德科技(中国)股份有限公司 | Method, device and system for detecting abnormity of ground wire zero line and readable storage medium |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203769U (en) * | 1985-09-08 | 1986-10-22 | 周龙泉 | Electronic voltage-detecting unit |
| CN2046634U (en) * | 1989-01-28 | 1989-10-25 | 江苏省冶金研究所 | Electroscope for integrated circuit |
| CN2058496U (en) * | 1989-07-31 | 1990-06-20 | 上海东海装潢材料厂 | Multifunctional safety device for electric measurement |
| CN2109574U (en) * | 1991-11-14 | 1992-07-08 | 孙有 | Dg-4 electronic electricity tester |
| CN2476096Y (en) * | 2001-03-15 | 2002-02-06 | 殷宪军 | Zero line-breaking protector |
| CN202172264U (en) * | 2011-07-22 | 2012-03-21 | 傅志海 | Zero line monitoring device |
| CN203260842U (en) * | 2013-05-23 | 2013-10-30 | 介国安 | Zero-line disconnection protection universal self-inspection conjoined socket |
| US8605395B1 (en) * | 2010-01-28 | 2013-12-10 | Charles James Hoyenski, III | Dual plug adapter and household high current apparatus |
| CN204882690U (en) * | 2015-08-13 | 2015-12-16 | 高超 | Non - touch voltage detection instrument |
| CN105591379A (en) * | 2016-03-21 | 2016-05-18 | 吴伟 | Firing line/zero line identification method and apparatus for electric-shock or leakage protector |
| CN107132449A (en) * | 2017-06-20 | 2017-09-05 | 漳州市玉山电子制造有限公司 | A kind of socket test circuit |
| CN207176216U (en) * | 2017-08-31 | 2018-04-03 | 青岛正沃机械设备科技有限公司 | Broken thread detector |
| CN208125849U (en) * | 2018-05-15 | 2018-11-20 | 广州启途科技有限公司 | A kind of safety utilization of electric power intelligent monitor |
| CN109298277A (en) * | 2018-11-14 | 2019-02-01 | 长沙待电子科技有限公司 | Zero curve, firewire detection circuit and method, electrical equipment |
| WO2019114131A1 (en) * | 2017-12-12 | 2019-06-20 | 深圳市无电通科技有限公司 | Passive wireless single firewire control device and control method therefor |
| CN211206755U (en) * | 2019-09-16 | 2020-08-07 | 优利德科技(中国)股份有限公司 | Zero live wire identification system with detect function |
-
2019
- 2019-09-16 CN CN201910868959.XA patent/CN110609199A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85203769U (en) * | 1985-09-08 | 1986-10-22 | 周龙泉 | Electronic voltage-detecting unit |
| CN2046634U (en) * | 1989-01-28 | 1989-10-25 | 江苏省冶金研究所 | Electroscope for integrated circuit |
| CN2058496U (en) * | 1989-07-31 | 1990-06-20 | 上海东海装潢材料厂 | Multifunctional safety device for electric measurement |
| CN2109574U (en) * | 1991-11-14 | 1992-07-08 | 孙有 | Dg-4 electronic electricity tester |
| CN2476096Y (en) * | 2001-03-15 | 2002-02-06 | 殷宪军 | Zero line-breaking protector |
| US8605395B1 (en) * | 2010-01-28 | 2013-12-10 | Charles James Hoyenski, III | Dual plug adapter and household high current apparatus |
| CN202172264U (en) * | 2011-07-22 | 2012-03-21 | 傅志海 | Zero line monitoring device |
| CN203260842U (en) * | 2013-05-23 | 2013-10-30 | 介国安 | Zero-line disconnection protection universal self-inspection conjoined socket |
| CN204882690U (en) * | 2015-08-13 | 2015-12-16 | 高超 | Non - touch voltage detection instrument |
| CN105591379A (en) * | 2016-03-21 | 2016-05-18 | 吴伟 | Firing line/zero line identification method and apparatus for electric-shock or leakage protector |
| CN107132449A (en) * | 2017-06-20 | 2017-09-05 | 漳州市玉山电子制造有限公司 | A kind of socket test circuit |
| CN207176216U (en) * | 2017-08-31 | 2018-04-03 | 青岛正沃机械设备科技有限公司 | Broken thread detector |
| WO2019114131A1 (en) * | 2017-12-12 | 2019-06-20 | 深圳市无电通科技有限公司 | Passive wireless single firewire control device and control method therefor |
| CN208125849U (en) * | 2018-05-15 | 2018-11-20 | 广州启途科技有限公司 | A kind of safety utilization of electric power intelligent monitor |
| CN109298277A (en) * | 2018-11-14 | 2019-02-01 | 长沙待电子科技有限公司 | Zero curve, firewire detection circuit and method, electrical equipment |
| CN211206755U (en) * | 2019-09-16 | 2020-08-07 | 优利德科技(中国)股份有限公司 | Zero live wire identification system with detect function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111580019A (en) * | 2020-06-24 | 2020-08-25 | 优利德科技(中国)股份有限公司 | Method, device and system for detecting abnormity of ground wire zero line and readable storage medium |
| WO2021258731A1 (en) * | 2020-06-24 | 2021-12-30 | 优利德科技(中国)股份有限公司 | Ground wire and neutral line abnormity detection method and device, |
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