CN206601457U - Line detection device and socket - Google Patents

Abstract

The embodiment of the utility model provides a circuit detection device and socket, the device includes: a circuit detection module, a processing module and an output module, the circuit detection module and the output module are respectively connected to the processing module; the circuit The detection module is connected to the power supply line, and is used to collect the circuit signal of the power supply line; the circuit signal includes current and/or voltage; the processing module is used to trigger the The output module outputs the first warning prompt information. The embodiment of the utility model improves the safety of the power supply line.

Description

Line detection device and socket

technical field

The embodiment of the utility model relates to the technical field of electronics and electric engineering, in particular to a line detection device and a socket.

Background technique

With the increase in the number and types of various electrical equipment in production and life, the hidden dangers of electricity safety in production and life also increase. When the electrical equipment is in use, it needs to be connected to the power supply line, usually through various types of sockets to connect the power supply line to obtain power supply power. Therefore, the safety performance of the power supply line has become an important factor affecting the user's electricity safety.

For example, when the user is using water heaters, induction cookers and other high-power electrical equipment at the same time, the user generally cannot judge whether the current circuit has caused the overall load to be overloaded, and cannot judge whether there is a problem in the circuit in time, which will cause certain damage to the user's body, mind and property. potential threats.

Utility model content

The embodiment of the utility model provides a line detection device and a socket, which are used to solve the safety problem that the line cannot be detected in time in the prior art.

The present application discloses a line detection device. The line detection device includes: a circuit detection module, a processing module, and an output module, and the circuit detection module and the output module are respectively connected to the processing module;

The circuit detection module is connected to the power supply line, and is used to collect the circuit signal of the power supply line; the circuit signal includes current and/or voltage;

The processing module is configured to trigger the output module to output first warning prompt information when the circuit signal meets a first warning condition.

Preferably, the line detection device further includes a temperature acquisition module connected to the processing module, configured to collect the line temperature of the power supply line, and send the line temperature to the processing module;

The processing module is further configured to trigger an output module to output the second alarm prompt information when the temperature of the power supply line meets the second alarm condition; and/or

When the circuit signal and the circuit temperature meet a third alarm condition, the output module is triggered to output third alarm prompt information.

Preferably, the temperature collection module includes: a temperature sensor for collecting the temperature in the power supply line;

A digital converter connected with the temperature sensor is used to convert the temperature from an analog signal to a digital signal.

Preferably, the circuit detection module includes a signal acquisition submodule, a filtering submodule, a frequency conversion submodule, and an isolation submodule;

The signal collection sub-module is connected to the power supply line, and is used to collect a circuit signal of the power supply line; the circuit signal is current or voltage;

The filtering sub-module is connected to the signal acquisition sub-module, and is used for filtering the circuit signal collected by the signal acquisition sub-module;

The frequency conversion sub-module is connected to the filtering sub-module, and is used to convert the circuit signal filtered by the filtering sub-module into a frequency signal;

The isolation sub-module is connected with the frequency conversion sub-module and the processing module, and is used for isolating noise in the frequency signal, and transmitting the noise-isolated frequency signal to the processing module.

Preferably, when the circuit signal is current; the signal acquisition sub-module includes a first sampling resistor, the first end of the first sampling resistor is connected to the neutral line of the power supply line, and the second end is connected to the neutral line of the power supply line through the load interface. The fire wire of the power supply line; the load interface is used to connect to the electric equipment, and when the electric equipment is connected, the circuit acquisition module is turned on;

The filter sub-module includes a first filter resistor, a second filter resistor, a first filter capacitor, and a second filter capacitor;

The first end of the first filter resistor is connected to the second end of the first sampling resistor, and the second end is connected to the first end of the first filter capacitor; the first end of the second filter resistor is connected to the The first terminal and the second terminal of the first sampling resistor are connected to the first terminal of the second filter capacitor; both the first terminal of the first filter capacitor and the second terminal of the second filter capacitor are grounded;

The frequency conversion sub-module includes an electric energy metering chip; the power supply pin of the electric energy metering chip is connected to the power supply through a conversion capacitor; the first input pin is connected to the first end of the first filter capacitor; the second input pin Connect the first end of the second filter capacitor; the output pin is connected to the isolation sub-module;

The isolation sub-module includes an optocoupler isolation chip; the input pin of the optocoupler isolation chip is connected to the output pin of the electric energy measurement chip, and the output pin is connected to the processing module.

Preferably, the processing module is a single-chip microcomputer; the output module is a prompt light or a speaker.

Preferably, the temperature sensor is a K-type thermocouple; the digital converter is a K-type thermocouple analog-to-digital converter;

The positive pole of the K-type thermocouple is connected to the first input pin of the K-type thermocouple analog-to-digital converter, and the negative pole of the K-type thermocouple is connected to the second input pin of the K-type thermocouple analog-to-digital converter. foot.

Preferably, the circuit detection module further includes a power supply module connected to the frequency conversion sub-module to provide the power supply for the frequency conversion sub-module.

The present application also discloses a socket, which includes a socket body and any one of the above-mentioned line detection devices arranged in the socket body;

The socket body is connected to the power supply line;

The line detection device is used to detect the circuit signal of the power supply line; the circuit signal includes current and/or voltage.

Preferably, the circuit signal in the socket is current, and the socket body is provided with a load interface;

The line detection device is connected in series with the load interface and then connected to the power supply line.

The line detection device and the socket provided by the embodiment of the utility model adopt the circuit detection module to collect circuit signals in the power supply line, the circuit signals include current and/or voltage, and then send the collected circuit signals to the processing module. The processing module processes the received data, and outputs the first alarm prompt information when judging that the circuit signal satisfies the first alarm condition. The embodiment of the utility model realizes the monitoring of the power supply line by detecting the circuit signal of the power supply line, and can find the problems in the power supply line in time; by outputting the warning prompt information, the user can be notified in time, so that the user can timely respond to the problems that occur in the power supply line. The problematic circuit is dealt with accordingly, further improving the safety of the power supply line.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a schematic structural diagram of an embodiment of a line detection device provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of another embodiment of a line detection device provided by an embodiment of the present invention;

3 is a schematic structural diagram of a circuit detection module in a line detection device provided by an embodiment of the present invention;

Fig. 4 is a schematic circuit structure diagram of a circuit detection module in a line detection device provided by an embodiment of the present invention;

Fig. 5 is a schematic circuit structure diagram of a power supply module in a line detection device provided by an embodiment of the present invention;

FIG. 6 is a schematic circuit structure diagram of a processing module in a line detection device provided by an embodiment of the present invention;

Fig. 7 is a schematic circuit structure diagram of a temperature acquisition module in a line detection device provided by an embodiment of the present invention;

Fig. 8 is a circuit structure diagram of a line detection device provided by an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of an embodiment of a socket provided by an embodiment of the present invention;

Fig. 10 is a structural flowchart of an embodiment of a line detection method provided by the embodiment of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The technical solution of the utility model mainly realizes the detection of the power supply line, which can effectively ensure the safety of the power supply line, especially for the power supply line with relatively large power.

Due to the rapid development of various industrial technologies and electrical fields, more and more electrical equipment are used in production and life, especially in the daily life of users, all kinds of electrical equipment play an increasingly important role in life. important role. In practical applications, electrical equipment is usually connected to a power supply line through a socket to obtain an AC voltage provided by the power supply line to ensure normal operation of user equipment. However, the inventor of the utility model found in the research that the power supply line has a short circuit, unstable current or voltage, etc., and there are potential safety hazards.

After a series of studies, the utility model found that if the power supply line has a safety hazard, it can be detected in time, and the user can be notified to deal with the failure in time, which will greatly improve the safety of electricity use and avoid the safety hazards caused by the power supply line. Security risks.

Therefore, the technical solution of the present utility model is proposed. The embodiment of the utility model provides a line detection device, which includes a line detection module, a processing module and an output module. By detecting circuit signals such as current and/or voltage in the power supply line, and sending the detected circuit signal to the processing module for processing, the processing module judges whether the detected circuit signal meets the first alarm condition. When an alarm condition occurs, the first warning message will be output to the user, so that the user can know in time that a problem has occurred in the power supply line, and corresponding processing is required to ensure the safety of the power supply line. The embodiment of the utility model detects the power supply line, and can prompt the user in time when there is a problem in the power supply line, thereby ensuring the safety of power consumption and effectively avoiding potential safety hazards caused by the power supply line.

The technical scheme of the utility model will be described in detail below in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural diagram of an embodiment of a line detection device provided by an embodiment of the present invention. This embodiment is mainly used for detection of power supply lines.

The circuit detection device may include a circuit detection module 101, a processing module 102, and an output module 103; wherein:

The circuit detection module 101 and the output module 103 are respectively connected to the processing module 103;

The circuit detection module 101 is connected to the power supply line, and is used to collect the circuit signal of the power supply line; the circuit signal includes current and/or voltage;

The circuit detection module is connected to the processing module, and after collecting the circuit signal of the power supply line, sends the circuit signal to the processing module.

Wherein, the circuit detection module can collect circuit signals in real time or periodically according to the instructions of the processing module.

The connection point between the power supply line and the circuit detection module may be the initial access terminal in the power supply system, and the initial access terminal may be used to detect the overall circuit signal of the power supply system to judge the safety of the entire power supply system. The connection point between the power supply line and the circuit detection module can also be the access terminal of any power consumption branch in the power supply branch, which is used to detect the circuit signal of the power consumption branch and judge the power consumption of a single power consumption branch. The safety status of the circuit, or the circuit signal of each power consumption branch can be detected to quickly obtain a problematic power consumption branch.

The circuit detection module can be connected in series with the power supply line to detect the current in the power supply line; the circuit detection module can also be connected in parallel with the power supply line to detect the voltage in the power supply line; The circuit detection module may also include a first detection submodule connected in series with the power supply line and a second detection submodule connected in parallel with the power supply line, for detecting the current and voltage in the power supply line.

The processing module 102 is configured to trigger the output module 103 to output first warning prompt information when the circuit signal meets a first warning condition.

When the circuit signal collected by the circuit detection module is a voltage, the first alarm condition may be that the voltage exceeds a first safe voltage allowable range. When the circuit signal collected by the circuit detection module is a current, the first alarm condition may be that the current exceeds a safe current allowable range. When the circuit signal collected by the circuit detection module includes both voltage and current, the first alarm condition may be that the voltage exceeds the allowable range of the second safe voltage and the current exceeds the allowable range of the second safe current.

Wherein, the output module can be any device used to warn the user that there is a problem with the circuit, for example, the output module can be an indicator light, then triggering the output module to output the first warning prompt information can be triggered to light up the indicator light, To remind the user that the power supply line is abnormal;

Certainly, the different colors of the warning light can also be used to remind the user of the abnormality of the circuit. For example, triggering the output module to output the first warning prompt information can be to trigger the light to turn on as a color.

In addition, the processing module can also trigger the prompt light to light up in different colors according to different detection data of the circuit signal, so as to remind the user that the power supply line is in different states.

Taking the circuit signal as the current as an example, if the current exceeds the allowable range of the safe current, the trigger indicator light will light up in red, indicating that the power supply line is abnormal. If it is not handled in time, there will be safety hazards. If the current is within the allowable range of the safe current, but greater than the warning value, the trigger indicator light will turn yellow, indicating that the power supply line is about to be abnormal, so as to remind the user to deal with it in time. If the current is within the allowable range of the safe current and is less than the warning value, the prompt light can be triggered to turn green, indicating that the power supply line is in normal use.

The line detection device can be an independent detection device that can be connected to the power supply line to obtain the circuit signal of the power supply line; the line detection device can also be integrated in the power supply equipment connected to the power supply line, for example, The wiring device can be a socket, and the device is in the socket to detect the circuit signal of the power supply line connected to the socket. The socket can be a mobile socket or a socket fixed on the wall, and the fixed socket can be a switch socket Or a power socket, etc.; the line detection device can also be integrated in the electrical equipment. When the electrical equipment is connected to the power supply line through a socket and other wiring equipment to obtain power, the line detection device in the user equipment also realizes the power supply line. the link to.

In addition, the output module can also be a buzzer light or a speaker, and when the circuit signal meets the first warning condition, the buzzer or speaker is triggered to output a warning sound.

It should be noted that the above is only an example of the implementation of the output module and the implementation of the first warning message. In the embodiment of the present utility model, the specific implementation of the output module and the warning message is not limited. Realizing the warning method of prompting the user belongs to the content protected by the embodiment of the present utility model.

In this embodiment, when the circuit signal such as current and/or voltage of the power supply line is monitored by the line detection device, it can be judged according to the collected circuit signal whether the currently detected power supply line is within the safe use range, so as to remind the user that the power supply line The use status of the power supply line has been realized, and the safety monitoring of the power supply line can be realized, and the circuit fault and threat can be found in time, so that the user can deal with the fault in time, thereby improving the safety of the power supply line.

In order to improve the accuracy of circuit detection, it is found in the research of the utility model that temperature is also an important factor to measure whether there is a potential safety hazard in the power supply line. Therefore, as shown in Figure 2, a line detection device provided by the embodiment of the utility model Schematic diagram of the structure of yet another embodiment. The difference between the line detection device and FIG. 1 is that the line detection device may also include a temperature acquisition module 104 connected to the processing module, for collecting the line temperature of the power supply line, and The temperature is sent to the processing module 102;

The processing module 102 is further configured to trigger an output module to output the second alarm prompt information when the temperature of the power supply line meets the second alarm condition; and/or

When the circuit signal and the circuit temperature meet a third alarm condition, the output module is triggered to output third alarm prompt information.

The second alarm condition may be that the temperature of the power supply line is greater than a preset temperature. Wherein, the first alarm prompt information and the second alarm prompt information may be the same or different. When the first alarm prompt information and the second alarm prompt information are the same, the user may be prompted that the power supply line is abnormal. When the first alarm prompt information and the second alarm prompt information are different, the user can be reminded that the power supply line is abnormal, and the user can be reminded of the cause of the abnormality, that is, the power supply line is abnormal due to abnormal temperature or circuit signal.

When the output module is an indicator light, the first alarm prompt information and the second alarm prompt information can be distinguished by different lighting colors of the indicator light.

The third alarm condition may be that the temperature of the power supply line satisfies the first alarm sub-condition, and its circuit signal satisfies the second alarm sub-condition. The first alarm sub-condition may be that the temperature is greater than a second preset temperature, and the second preset temperature may be less than or equal to the first preset temperature. When the circuit signal is a current, the second alarm sub-condition may be that the current exceeds the third safe current allowable range, and the third safe current preset range may be less than or equal to the first safe current allowable range, and when the circuit signal is a current, the second The second alarm sub-condition may be that the voltage exceeds the third safe voltage allowable range, and the third safe voltage allowable range may be smaller than the first safe voltage allowable range.

The temperature threshold and the circuit signal threshold can be set by the user according to the use parameters of the components, or can be set according to the working environment of the components.

In some embodiments, optionally, as shown in FIG. 3 , the circuit detection module may include a signal acquisition submodule 301, a filtering submodule 302, a frequency conversion submodule 303, and an isolation submodule 304;

The signal collection sub-module 301 is connected to the power supply line, and is used to collect a circuit signal of the power supply line; the circuit signal is current or voltage;

The filter sub-module 302 is connected to the signal acquisition sub-module 301, and is used for filtering the circuit signal collected by the signal acquisition sub-module; to remove noise from the circuit signal collected by the signal acquisition module, and improve accuracy .

The frequency conversion sub-module 303 is connected to the filtering sub-module 302, and is used to convert the circuit signal filtered by the filtering sub-module into a frequency signal; so as to convert the circuit signal into a digital signal, so that the The circuit signal can be recognized by the processing module.

The isolation sub-module 304 is connected with the frequency conversion sub-module 303 and the processing module, and is used for isolating noise in the frequency signal, and transmitting the denoised frequency signal to the processing module. By isolating components such as current and voltage in the circuit, only frequency information can be output in the form of pulses.

In this embodiment, the acquisition module filters the collected circuit signal of the power supply line, and removes various acquisition noises generated during the acquisition process, so that the signal strength of the collected circuit signal is higher and can better represent the use of the power supply line. Condition. The frequency conversion sub-module converts the circuit signal from an analog signal to a frequency signal, and outputs frequency pulses, so that the monitoring information of the circuit can be grasped more accurately. The isolation sub-module performs voltage isolation on the information and only transmits the number of pulses to ensure the validity and accuracy of the data.

Among them, each sub-module in the circuit detection module shown in Figure 3 has multiple possible implementations, taking the circuit signal as an example of current, as another embodiment, as shown in Figure 4, each sub-module in the circuit detection module A possible implementation of . In this embodiment, the line detection device is arranged in the wiring device, and the wiring device is provided with a load interface for connecting to the user equipment, so that the user equipment can establish a connection with the power supply line. As shown in FIG. 4 , 401 is a load interface.

Wherein, the signal acquisition sub-module may include a first sampling resistor R6, and the filter sub-module includes a first filter resistor R7, a second filter resistor R8, a first filter capacitor C7, and a second filter capacitor C8; the frequency conversion The sub-module includes an electric energy metering chip X1; the isolation sub-module includes: an optocoupler isolation chip X2;

Wherein, the first end of the first sampling resistor R6 is connected to the neutral line of the power supply line, and the second end is connected to the live wire of the power supply line through the load interface; When the user equipment is connected, the circuit acquisition module is turned on; if the user equipment is not connected, the current detected here is 0.

The first end of the first filter resistor R7 is connected to the second end of the first sampling resistor R6, and the second end is connected to the first end of the first filter capacitor C7; the first end of the second filter resistor R8 end connected to the first end of the first sampling resistor R6, and the second end connected to the first end of the second filter capacitor C8; the first filter capacitor C7 and the second end of the second filter capacitor C8 are both grounding;

The power supply pin of the electric energy measurement chip X1 is connected to the power supply through a protection capacitor C9; the first input pin is connected to the first end of the first filter capacitor C7; the second input pin is connected to the second filter capacitor C8 The first end; the output pin is connected to the isolation sub-module;

The input pins of the optocoupler isolation chip are connected to the output pins of the electric energy metering chip and the processing module. At the same time, the anode pin of the light-emitting diode of the optocoupler isolation chip is powered through a resistor. The output pin of the optocoupler isolation chip pulls up the first end of the resistor R10 to a voltage that can supply power to other modules through the pull-up resistor R10, so the high voltage output by the first end of the pull-up resistor R10 can be used. level+VCC, supplying power to other pins or input terminals in the line detection device that need power supply.

In practical application, the electric energy metering chip X1 in the above embodiment can be an HLW8012 chip, and the isolation sub-module X2 can be an optocoupler isolation chip PS2501.

In this embodiment, the specific connection relationship of the circuit detection module is shown, and an accurate sampling circuit is provided for the user to further improve the accuracy of the collected circuit signal, thereby improving the safety of the power supply system.

When the circuit signal is a voltage, two resistors can be connected in parallel between the live wire and the neutral wire in the power supply line, wherein the first end of the first resistor is connected to the live wire, and the second end is connected to the first end of the second resistor , the second end of the second resistor is connected to the neutral line. Outputting the voltage at the second terminal of the first resistor or the first terminal of the second resistor as the circuit information.

When the circuit signal is current, since the current sampling method used in the above embodiment uses sampling resistors to directly sample from the power grid, this sampling method is non-isolated, so the power metering chip in the frequency conversion module can convert the non-isolated sampling current Information can be isolated by providing a non-isolated power supply for the electric energy metering chip in the electric frequency module. Therefore, in some embodiments, optionally, the above-mentioned circuit detection module may further include a power supply module connected to the frequency conversion sub-module to provide the power supply for the frequency conversion sub-module.

In practical applications, the power supply module in some embodiments may be a non-isolated power supply circuit as shown in FIG. 5 , of course, the power supply module may also be a RC step-down power supply. The power conversion chip X4 in FIG. 5 may be an MP150 (Monolithic Power 150, core source 150) chip, and the MP150 chip is a primary-side regulator that can provide precise constant voltage control without optocoupler isolation. The fire wire is connected to the first pin DRAIN of the power conversion chip X4 through the first isolation resistor R1 and the first isolation diode D1, and the first pin is also grounded through a capacitor first isolation C1 to ensure the safety of the circuit power supply; zero The wires are connected to the anode of the second isolation diode D2, the second end of the fifth isolation capacitor C5, the second end of the sixth isolation capacitor C6 and the second end of the fifth isolation resistor R5. The negative electrode of the second isolation diode D2 is connected to the second end of the third isolation resistor R3, and the first end of the third isolation resistor R3 is connected to the FB pin of the power conversion chip X4. The first end of the third isolation capacitor C3 is connected to the FB pin, and the second end is connected to the SOURCE pin. A first end of the second isolation capacitor C2 is connected to the VCC pin, and a second end is connected to the SOURCE pin. The second end of the second isolation resistor R2 is connected to the second end of the second isolation resistor R3, and the first end is connected to the cathode of the third isolation diode D3. The anode of the third isolation diode D3 is connected to the second end of the fourth isolation resistor R4. A first end of the fourth isolation capacitor C4 is connected to the negative electrode of the third isolation diode D3, and a second end is connected to the first end of the fourth isolation resistor R4. The first end of the fourth isolation resistor R4, the second end of the second isolation capacitor C2, the second end of the third isolation capacitor C3, the second end of the third isolation resistor R3, and the cathode of the second isolation diode D2 are all connected to On the SOURCE pin of the power conversion chip X4. The first end of the fifth isolation capacitor C5, the first end of the sixth isolation capacitor C6 and the first end of the fifth isolation resistor R5 are all connected to the SOURCE pin. The second end of the fifth isolation capacitor C5, the second end of the sixth isolation capacitor C6 and the second end of the fifth isolation resistor R5 are all connected to ground. The fifth isolation resistor R5 acts as a pull-up resistor to pull up the voltage at the first terminal of the fifth isolation resistor R5 to a high level.

At the same time, since the fifth isolation resistor R5 pulls up the voltage at its first end to a high level +5V, the high level here is used to perform the power measurement chip and the optocoupler isolation module in the frequency conversion module. powered by.

In some embodiments, in order to improve processing efficiency, optionally, the above-mentioned processing module may be a single-chip microcomputer.

In practical applications, in order to make the single-chip microcomputer work normally, a crystal oscillator circuit is added to the single-chip microcomputer, which may include crystal oscillator capacitor C10, crystal oscillator capacitor C11, and crystal oscillator Y1; a reference power supply circuit, including reference capacitor C12; power access, etc. The specific connection relationship can be shown in Figure 6. The single-chip microcomputer can be selected as ATmega32, and the oscillator module of the single-chip microcomputer is formed by the crystal oscillator Y1, the capacitor C10 and the capacitor C11 to provide the crystal oscillator cycle for the single-chip microcomputer. The reference power supply of the circuit is formed by capacitor C12, AREF pin, AGND pin, AVCC pin, etc. The power supply pin VCC1 of the single-chip microcomputer is connected to the first end of the pull-up resistor R10 of the circuit sampling module to output high level +VCC to supply power for the single-chip microcomputer, so that the single-chip microcomputer can operate normally.

In order to make the obtained temperature of the power supply line more accurate, as yet another embodiment, the temperature collection module may be a temperature sensor for collecting the temperature in the power supply line; and

A digital converter connected to the temperature sensor is used to convert the line temperature from an analog signal to a digital signal.

The temperature sensor can be located near the power supply line, within a distance that can accurately sense the temperature of the power supply line, so as to obtain more accurate temperature data and make the alarm prompt information more accurate.

In practical applications, the power supply line usually generates heat during the power supply process, and the greater the current of the power supply line, the more serious the heat generation phenomenon. And because the power supply lines in the power supply line mostly use plastic material as the sheath of the cable, when the heat is severe, the sheath of the cable is easy to be damaged, thereby forming a short circuit, and even causing a fire in severe cases. Therefore, in the embodiment of the utility model, a temperature detection module is provided to detect the environment around the power supply line at any time. When the temperature of the surrounding environment is too high, the user is prompted to take corresponding measures, such as cutting off the circuit, etc., to further ensure the safety of the circuit. .

In some embodiments, in order to further improve the accuracy of the obtained circuit temperature, optionally, as shown in FIG. 7, the above-mentioned temperature sensor can be a K-type thermocouple K1; Analog-to-digital converter X3;

The positive pole of the K-type thermocouple K1 is connected to the first input pin of the K-type thermocouple analog-to-digital converter X3, and the negative pole of the K-type thermocouple is connected to the first input pin of the K-type thermocouple analog-to-digital converter X3. The two input pins are connected;

In order to make the K-type thermocouple analog-to-digital converter X3 work normally, the power supply pin of the K-type thermocouple analog-to-digital converter X3 is also connected to the power supply, that is, the first end of the pull-up resistor R10 connected to the circuit sampling module The output high level +VCC supplies power for the K-type thermocouple analog-to-digital converter X3. The ground pin DGND of the K-type thermally coupled analog-to-digital converter X3 is connected to the first end of the protective capacitor C13 while being grounded, and the second end of the protective capacitor C13 is connected to the K-type thermally coupled analog-to-digital converter X3 for circuit protection.

In practical applications, optionally, the K-type thermocouple K1 in the embodiment shown in FIG. 7 above may be a K-type thermocouple of Ni-Ni-Si, and the K-type thermocouple analog-to-digital converter X3 may be a conversion chip MAX6675.

Fig. 8 is the overall circuit structure diagram of the line detection device based on the specific circuit diagrams of the various modules in the embodiment described in Figs.

The first sampling resistor R6 in the circuit sampling module is connected in series with the load at both ends of the live wire and the neutral wire, collects the current in the power supply line, and then outputs the current to the filter module. The filter module includes a first filter resistor R7, a second filter resistor R8, a first filter capacitor C7 and a second filter capacitor C8. The filter module filters the current and outputs it to the electric energy metering chip HLW8012. The HLW8012 chip converts the circuit signal from an analog signal to a digital signal, and outputs it to the optocoupler isolation chip PS2501 through the output pin. The optocoupler isolation chip converts the voltage Wait for the signal to be isolated, and then output the pulse signal from the output pin to the processing module.

The temperature acquisition module is composed of MAX6675 chip and Ni-Ni-Si K-type thermocouple. The MAX6675 chip converts the temperature data obtained by Ni-Ni-Si K-type thermocouple into digital signal, and converts the converted temperature signal from SO, CS, SCK The pin is sent to the microcontroller ATmega32.

The microcontroller ATmega32 processes the received circuit signal and temperature signal, and when it judges that the warning condition is satisfied, the prompt light L outputs prompt information. L is a prompt light in the output module, and the output prompt information may be that the prompt light L is turned on. As shown in FIG. 8 , the CF1 pin of the single-chip microcomputer is connected to the output pin of the optocoupler isolation chip, and the SO pin, CS pin, and SCK pin of the single-chip microcomputer are connected to the temperature acquisition module.

In the embodiment of the utility model, the electric energy metering chip HLW8012 of the circuit sampling module and the optocoupler isolation chip can be powered by the resistor in the non-isolated power supply circuit. Other chips in the embodiment of the utility model, such as single-chip microcomputer, The temperature conversion module MAX6675 can be powered by the high level +VCC output from the first end of the pull-up resistor R10 in the circuit sampling.

In the embodiment of the present invention, a specific type of chip is used to speed up the sampling speed and processing speed, so that the acquired sampling information is more effective, so as to further quickly obtain the line status of the power supply line, and further improve the safety of the power supply line.

In practical applications, the line detection device described in the embodiment of the present invention can be an independent detection device, which can be connected with the power supply line to obtain the circuit signal of the power supply line. The connection method between the line detection device and the power supply line can be that the line detection device is installed at a preset position of the power supply line when the power supply line is laid; of course, it can also be connected to the power supply line through a wiring device, such as a socket. The line detection device can also be integrated in the wiring device connected to the power supply line. For example, the wiring device can be a socket, and the line detection device can be specifically arranged in the socket, and has an integrated structure with the socket for detecting The circuit signal of the supply line connected to this outlet. The socket can be a mobile socket or a socket fixed on the wall, and the fixed socket can be a switch socket or a power socket. The line detection device can also be integrated in the electrical equipment. When the electrical equipment is connected to the power supply line through a wiring device such as a socket, the line detection device in the user equipment also realizes the connection with the power supply line.

Therefore, as shown in FIG. 9 , the embodiment of the present invention also provides a socket, including a socket body 901 and a line detection device 902 disposed in the socket body. For the line detection device, reference may be made to the description in the foregoing embodiments.

Wherein, the line detection device 902 is configured to detect a circuit signal of the power supply line; the circuit signal includes current and/or voltage.

When the circuit signal is current, the line detection device is connected to the power supply line after being connected in series with the load interface of the socket. The current in the power supply line can be detected by using the line detection device. When the load interface is not connected to the user equipment, the detected current is 0. When the load is connected to the user equipment, it can be detected to obtain a non-zero current, so that it can be used in During the use of the electrical equipment, judging whether the power supply line is safe according to the detected current and/or temperature can ensure the safe use of the electrical equipment. The line detection device can be specifically referred to in FIG. 4 to FIG. 8 .

When the circuit signal is a voltage, the line detection device can be connected in parallel in the power supply line, and the line detection device can be used to detect the voltage in the power supply line, and judge whether the power supply line is safe according to the detected voltage and/or temperature, so as to ensure the safety of the power supply line. electrical safety.

It should be noted that the line detection device of the embodiment of the utility model is applied in the socket body, but the connecting line with the socket itself and the power supply line can be independent or integrated together. The utility model does not specifically limit this.

The socket provided by the embodiment of the utility model is convenient to carry and easy to use, and enables the user to detect the power supply line of the socket at any time and any place, thereby ensuring the safety of the socket during use.

Based on the line detection device described in any of the above embodiments, see FIG. 10 , which is a flow chart of an embodiment of a line detection method provided by the present application. The methods include:

1001: Collect a circuit signal of the power supply line; the circuit signal includes current and/or voltage;

1002: Judging whether the circuit signal meets the first alarm condition;

1003: When the circuit signal meets a first alarm condition, output the first warning prompt information.

The embodiment of the utility model provides a line detection method, which can detect the circuit signal in the power supply line, and prompt the user when the circuit signal is abnormal, thereby providing the user with safety guarantee.

In order to improve the accuracy of circuit detection, it is found in the research of the utility model that temperature is also an important factor to measure whether there will be safety hazards in the power supply line. Therefore, as another embodiment, in the embodiment of the utility model, the acquisition power supply line When the circuit signal is obtained, the method further includes collecting the line temperature of the power supply line.

After collecting the line temperature of the power supply line, the method further includes:

When the temperature of the power supply line meets the second alarm condition, the trigger output module outputs the second alarm prompt information; and/or

When the circuit signal and the circuit temperature meet a third alarm condition, the output module is triggered to output third alarm prompt information.

The second alarm condition may be that the temperature of the power supply line is greater than a preset temperature. Wherein, the first alarm prompt information and the second alarm prompt information may be the same or different. When the first alarm prompt information and the second alarm prompt information are the same, the user may be prompted that the power supply line is abnormal. When the first alarm prompt information and the second alarm prompt information are different, the user can be reminded that the power supply line is abnormal, and the user can be reminded of the cause of the abnormality, that is, the power supply line is abnormal due to abnormal temperature or circuit signal.

When the output module is an indicator light, the first alarm prompt information and the second alarm prompt information can be distinguished by different lighting colors of the indicator light.

The third alarm condition may be that the temperature of the power supply line satisfies the first alarm sub-condition, and its circuit signal satisfies the second alarm sub-condition. The first alarm sub-condition may be that the temperature is greater than a second preset temperature, and the second preset temperature may be less than or equal to the first preset temperature. When the circuit signal is a current, the second alarm sub-condition may be that the current exceeds the third safe current allowable range, and the third safe current preset range may be less than or equal to the first safe current allowable range, and when the circuit signal is a current, the second The second alarm sub-condition may be that the voltage exceeds the third safe voltage allowable range, and the third safe voltage allowable range may be smaller than the first safe voltage allowable range.

The temperature threshold and the circuit signal threshold can be set by the user according to the use parameters of the components, or can be set according to the working environment of the components.

In the embodiment of the utility model, the line temperature of the power supply line is also collected, and the safety of the power supply line is further improved by judging the line temperature.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A line detection device, characterized in that, comprising: a circuit detection module, a processing module and an output module, the circuit detection module and the output module being connected to the processing module respectively; The circuit detection module is connected to the power supply line, and is used to collect the circuit signal of the power supply line; the circuit signal includes current and/or voltage; The processing module is configured to trigger the output module to output first warning prompt information when the circuit signal meets a first warning condition. 2. The device according to claim 1, further comprising a temperature collection module connected to the processing module, configured to collect the circuit temperature of the power supply circuit, and send the circuit temperature to the processing module. module; The processing module is further configured to trigger an output module to output the second alarm prompt information when the temperature of the power supply line meets the second alarm condition; and/or When the circuit signal and the circuit temperature meet a third alarm condition, the output module is triggered to output third alarm prompt information. 3. The device according to claim 2, wherein the temperature collection module comprises: a temperature sensor for collecting the temperature in the power supply line; A digital converter connected with the temperature sensor is used to convert the temperature from an analog signal to a digital signal. 4. The device according to any one of claims 1 to 3, wherein the circuit detection module includes a signal acquisition submodule, a filtering submodule, a frequency conversion submodule, and an isolation submodule; The signal collection sub-module is connected to the power supply line, and is used to collect a circuit signal of the power supply line; the circuit signal is current or voltage; The filtering sub-module is connected to the signal acquisition sub-module, and is used for filtering the circuit signal collected by the signal acquisition sub-module; The frequency conversion sub-module is connected to the filtering sub-module, and is used to convert the circuit signal filtered by the filtering sub-module into a frequency signal; The isolation sub-module is connected with the frequency conversion sub-module and the processing module, and is used for isolating noise in the frequency signal, and transmitting the noise-isolated frequency signal to the processing module. 5. The device according to claim 4, wherein the circuit signal is specifically an electric current; The signal acquisition sub-module includes a first sampling resistor, the first end of the first sampling resistor is connected to the neutral line of the power supply line, and the second end is connected to the live wire of the power supply line through a load interface; For accessing the electrical equipment, when the electrical equipment is accessed, the circuit acquisition module is turned on; The filter sub-module includes a first filter resistor, a second filter resistor, a first filter capacitor, and a second filter capacitor; The first end of the first filter resistor is connected to the second end of the first sampling resistor, and the second end is connected to the first end of the first filter capacitor; the first end of the second filter resistor is connected to the The first terminal and the second terminal of the first sampling resistor are connected to the first terminal of the second filter capacitor; both the first terminal of the first filter capacitor and the second terminal of the second filter capacitor are grounded; The frequency conversion sub-module includes an electric energy metering chip; the power supply pin of the electric energy metering chip is connected to the power supply through a conversion capacitor; the first input pin is connected to the first end of the first filter capacitor; the second input pin Connect the first end of the second filter capacitor; the output pin is connected to the isolation sub-module; The isolation sub-module includes an optocoupler isolation chip; the input pin of the optocoupler isolation chip is connected to the output pin of the electric energy measurement chip, and the output pin is connected to the processing module. 6. The device according to claim 1, wherein the processing module is a single-chip microcomputer; the output module is a reminder light or a speaker. 7. The device according to claim 3, wherein the temperature sensor is a K-type thermocouple; the digital converter is a K-type thermocouple analog-to-digital converter; The positive pole of the K-type thermocouple is connected to the first input pin of the K-type thermocouple analog-to-digital converter, and the negative pole of the K-type thermocouple is connected to the second input pin of the K-type thermocouple analog-to-digital converter. foot. 8 . The device according to claim 5 , wherein the circuit detection module further comprises a power supply module connected to the frequency conversion sub-module to provide the power supply for the frequency conversion sub-module. 9. A socket, characterized in that it comprises a socket body and the line detection device according to any one of claims 1 to 8 arranged in the socket body; The socket body is connected to the power supply line; The line detection device is used to detect the circuit signal of the power supply line; the circuit signal includes current and/or voltage. 10. The socket according to claim 9, wherein the circuit signal is current, and the socket body is provided with a load interface; The line detection device is connected in series with the load interface and then connected to the power supply line.