CN217385643U - Power detection device, socket and power detection system - Google Patents

Abstract

The application discloses power detection device, socket and power detection system relates to control technical field. The power detection apparatus may include: the device comprises a Hall sensor module, a central control module and a power supply module; the central control module is respectively connected with the Hall sensor module and the power supply module; the power supply module is used for generating a power supply signal based on an electric signal and supplying power to the Hall sensor module and the central control module; the Hall sensor module is used for being arranged at a position close to a power supply line of the terminal equipment and collecting a current signal of the electric signal in the power supply line; and the central control module is used for acquiring target power based on the current signal. The current signal is obtained based on the Hall sensor module, and then the target power is obtained, so that load detection is carried out, and only a small volume space is occupied.

Description

Power detection device, socket and power detection system

Technical Field

The present application relates to the field of monitoring technologies, and in particular, to a power detection apparatus, a socket, and a power detection system.

Background

Along with the popularization of the internet of things, more and more household electronic equipment is intelligentized. For wall switches and sockets, power detection is a very important functional point, and whether a load is connected or not, whether the load is working or not and whether the load is overloaded or not can be known through power, so that a user is reminded of whether an electric appliance is in a low standby state or not and a power supply is turned off to save household electricity. However, the existing power detection scheme occupies a large space and is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The application provides a power detection device, a socket and a power detection system, so as to improve the defects.

In a first aspect, an embodiment of the present application provides a power detection apparatus, where the apparatus includes: the device comprises a Hall sensor module, a central control module and a power supply module; the central control module is respectively connected with the Hall sensor module and the power supply module; the power supply module is used for generating a power supply signal based on an electric signal and supplying power to the Hall sensor module and the central control module; the Hall sensor module is used for being arranged at a position close to a power supply line of the terminal equipment and collecting a current signal of the electric signal in the power supply line; and the central control module is used for acquiring target power based on the current signal.

Further, the hall sensor includes: the first signal input end, the first ground end, the first signal output end and the second signal output end; the first signal input end and the first ground end are respectively connected with the power supply module, the first signal output end and the second signal output end are respectively connected with the central control module, the first signal output end and the second signal output end are used for outputting differential signals to the central control module, and the differential signals are used for representing the current values of the current signals of the electric signals.

Further, the hall sensor further includes: the circuit comprises a first resistor, a second resistor, a third resistor and a fourth resistor; one end of the first resistor is connected with the first signal input end, the other end of the first resistor is connected with the first signal output end, one end of the second resistor is connected with the first signal input end, the other end of the second resistor is connected with the second signal output end, one end of the third resistor is connected with the first signal output end, the other end of the third resistor is connected with the first ground end, one end of the fourth resistor is connected with the second signal output end, and the other end of the fourth resistor is connected with the first ground end.

Furthermore, the electric signal is alternating current, the power supply module comprises a conversion module, and the conversion module is respectively connected with the central control module and the Hall sensor module; the conversion module is used for converting alternating current into direct current, and the direct current is the power supply signal.

Further, the conversion module includes: the input end of the rectifying module is connected with the output end of the alternating current, the output end of the rectifying module is connected with the input end of the voltage stabilizing module, and the output end of the voltage stabilizing module is respectively connected with the central control module and the Hall sensor module.

Further, the conversion module further includes: the rectifier comprises a transformer, the output of rectifier module includes first output and second output, rectifier module's input includes first input and second input, rectifier module's first input with the first output of transformer is connected, rectifier module's second input with the second output of transformer is connected, the input of transformer with the output of alternating current is connected, rectifier module's first output with voltage stabilizing module's positive input end is connected, rectifier module's second output with voltage stabilizing module's ground is connected.

Further, the conversion module further includes: and one end of the filter capacitor is connected with the first output end of the rectifying module, and the other end of the filter capacitor is connected with the second output end of the rectifying module.

Further, the conversion module further includes: and one end of the load resistor is connected with the first output end of the rectifying module, and the other end of the load resistor is connected with the second output end of the rectifying module.

In a second aspect, an embodiment of the present application provides a socket, which includes a housing and the above power detection device, where the housing includes a jack, the jack is used to connect a power supply line, and the power supply line is used to transmit the electrical signal.

In a third aspect, an embodiment of the present application provides a power detection system, including: a terminal device and the socket; the terminal equipment is connected with the jacks of the socket.

According to the power detection device, the socket and the power detection system provided by the embodiment of the application, the detection of the original current and the acquisition of the target power are completed through the Hall sensor module, the central control module and the power supply module together, wherein the central control module is respectively connected with the Hall sensor module and the power supply module; the power supply module is used for generating a power supply signal based on the electric signal and supplying power to the Hall sensor module and the central control module; the Hall sensor module is used for being arranged at a position close to a power supply line of the terminal equipment and collecting a current signal of the electric signal in the power supply line; and the central control module is used for acquiring target power based on the current signal. If a special power metering chip is used for obtaining the target power, the design of a peripheral circuit corresponding to the chip is complex, the occupied space is large, and the cost of the chip is high. This application is based on hall sensor module, acquires current signal, and then acquires target power to carry out load detection, the peripheral circuit design that corresponds is simple, only occupies less volume space, simultaneously because need not use special power measurement chip, so the cost is lower.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a block diagram of a power detection system provided in an embodiment of the present application;

fig. 2 shows a block diagram of a power detection apparatus provided in an embodiment of the present application;

FIG. 3 is a schematic diagram illustrating a power detection apparatus provided in an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a power detection apparatus provided in an embodiment of the present application;

fig. 5 is a circuit diagram of a power detection apparatus provided in an embodiment of the present application;

fig. 6 shows a circuit diagram of a power detection apparatus provided in an embodiment of the present application;

fig. 7 is a block diagram illustrating a structure of a socket provided in an embodiment of the present application;

fig. 8 shows a block diagram of a power detection system according to another embodiment of the present application.

Detailed Description

To facilitate an understanding of the present embodiments, the present embodiments will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the present examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

With the increasing development of the internet of things technology, household electronic equipment is more and more intelligent. Monitoring of the power consumption of these devices is particularly important, among other things. The existing scheme is to monitor the power of a wall switch or a socket, further judge whether a load is connected, whether the load is working, whether the load is overloaded and the like, and then correspondingly prompt a user.

Specifically, a dedicated power metering chip can be used to collect the current flowing through the chip and the current voltage value, and a specific power value can be calculated through the voltage and the current, and then the corresponding consumed electric quantity can be calculated according to the duration.

However, the inventor finds in research that the most common product used in the household is 86 boxes, and the internal space of the 86 boxes is very limited. At this time, if a consumer chip is used for power detection, a corresponding chip and a relatively complex peripheral circuit are required, which greatly affects 86-box products with limited internal space.

Therefore, in order to overcome the above-mentioned defects, the embodiment of the present application provides a power detection device, a socket and a power detection system, based on the hall sensor module, a current signal is obtained, and then a target power is obtained, a circuit is simple, fewer components are used, and only a smaller volume space is occupied.

Referring to fig. 1, fig. 1 illustrates a power detection system 100 according to an embodiment of the present disclosure, where the power detection system 100 includes a power detection apparatus 110, a socket 120, and a terminal device 130. The socket 120 is connected to the power detection device 110 and the terminal device 130, respectively. The terminal device 130 can be connected with the socket 120 to obtain an alternating current power supply signal so as to meet the normal working requirement; the power detection device 110 is connected to the outlet 120, detects a current input to the terminal device 130 through the outlet 120, and obtains power information by calculating the obtained current. Wherein, the power detection device 110 may be a device for detecting current using hall effect; the receptacle 120 may be an 86 box product; the terminal device 130 may be a device powered by ac 220v, such as a television, a refrigerator, a washing machine, a notebook computer, a desktop computer, and the like. Where v is the voltage unit volts.

Further, referring to fig. 2, fig. 2 shows a specific structure diagram of the power detection apparatus 110 according to an embodiment of the present application. The power detection device 110 includes a power supply module 210, a hall sensor module 220, a central control module 230, and an ac input module 240. The power supply module 210 is connected to the ac input module 240, the hall sensor module 220, and the central control module, and the hall sensor module 220 is connected to the power supply module 210 and the central control module 230. The power supply module 210 is configured to generate a power supply signal based on an electrical signal to supply power to the hall sensor module 220 and the central control module 230; the hall sensor module 220 is used for collecting electric signals in a power supply line to acquire current signals, and the hall sensor module is arranged at a position close to the power supply line of the terminal equipment; the central control module 230 is used for acquiring target power based on the current signal; the power supply module 210 is configured to supply power to the hall sensor module 220 and the central control module 230, and the ac input module 240 is configured to provide ac power to the power supply module 210. For some embodiments, the hall sensor module 220 may be installed adjacent to the power supply line of the terminal device 130, and a current signal on the power supply line of the terminal device 130, that is, a current signal, may be obtained through the hall effect. The proximity mounting is performed by mounting the hall sensor module 220 close to the power supply line of the terminal device 130, so that the hall sensor module 220 is coupled to the magnetic field generated by the power supply line, but is not physically connected to the power supply line. The Hall sensor is adopted to collect current signals, the requirement on the volume is low, the peripheral circuit of the Hall sensor is simple, and the wiring is easy.

For one embodiment proposed herein, the hall sensor module 220 may apply the hall effect to enable detection of a raw current, which may be a current signal transmitted on a supply line that accesses the terminal device 130 from the ac input module 240. The hall sensor module 220 may obtain a hall voltage signal by using a hall effect, and then convert the hall voltage signal into a current signal, which is a current signal.

Furthermore, a semiconductor slice through which a small current passes is placed in a magnetic field, the current is influenced by the magnetic field to deflect, and voltages are formed on two sides of the semiconductor slice in the vertical direction of the control current, wherein the voltages are Hall voltages. The magnitude of the Hall voltage is proportional to the magnetic field strength and the control current passing through the semiconductor. Referring to fig. 3, fig. 3 illustrates the principle of the hall effect. The six sides of the semiconductor wafer 300 in fig. 3 can be defined as the front side, and the back side opposite the front side, the right side, and the left side opposite the right side, the upper side, and the lower side opposite the upper side, respectively. For example, the semiconductor wafer 300 is placed in a vertically downward magnetic field B such that the plane on which the upper face of the semiconductor wafer 300 lies is perpendicular to the magnetic field B. A constant voltage U is applied to the left and right sides of the semiconductor wafer 300, so that a constant current I flows through the semiconductor wafer 300. At this time, electrons moving in the magnetic field are subjected to Lorentz force (Lorentz force), and are deflected. Specifically, the direction of the lorentz force can be determined by the left-hand rule. The magnetic induction line of the magnetic field B penetrates into the palm of the left hand, and the four fingers point to the current direction, namely the four fingers point downwards, so that the direction of the thumb is the stress direction of the electrons. It can be seen that in fig. 3, the positive charges of the semiconductor sheet 300 move in the direction of the applied force as a whole, and the negative charges move in the opposite direction of the applied force, i.e., the positive charges move to the back and the negative charges move to the front. At this time, the hall voltage V can be obtained at the front surface of the semiconductor sheet 300 and the opposite rear surface.

Further, the hall sensor module 220 may include a magnetic core, a hall element, and an output circuit. For some embodiments, the hall sensor module may be a direct-sensing hall current sensor. The iron core of the direct-detection Hall current sensor is provided with an open air gap, and the Hall element is placed at the air gap. When current flows through the primary conductor, a magnetic field with the magnetic field intensity being in direct proportion to the current is generated around the conductor, the iron core gathers magnetic lines of force to the air gap, the Hall element outputs a voltage signal in direct proportion to the magnetic induction intensity at the air gap, and the amplifying circuit amplifies and outputs the signal.

For other embodiments, the hall sensor module 220 may also be a closed-loop hall current sensor, also referred to as a zero-flux hall current sensor or a magnetically balanced hall current sensor. The closed-loop Hall current sensor is additionally provided with a feedback loop on the basis of a direct detection type Hall current sensor, and is used for enabling a magnetic field at an air gap to change near zero magnetic flux all the time. Since the magnitude of the change in the magnetic field is very small,the frequency of the magnetic field change can be faster, i.e. the closed-loop hall current sensor can have a fast response time. Referring to fig. 4, fig. 4 illustrates a schematic diagram 400 of a closed loop hall current sensor. The schematic diagram 400 includes an operational amplifier 410, a hall element 420, and a push-pull circuit 430, wherein the hall element is disposed in a magnetic field B, and two poles of a magnetic medium forming the magnetic field B are respectively wound with a primary winding N _p And a secondary winding N _s . Wherein the current flowing in the primary winding is primary current I _p The current flowing through the secondary winding is the output current I _s . The first output end of the hall element 420 is connected with the first input end of the operational amplifier 410, the second output end of the hall element 420 is connected with the second input end of the operational amplifier 410, the output end of the operational amplifier 410 is respectively connected with the first input end and the second input end of the push-pull circuit 430, the output end of the push-pull circuit 430 and the secondary winding N _s Is connected to the positive power supply, the positive power supply of the push-pull circuit 430 is connected to the output of the positive power supply, the negative power supply of the push-pull circuit 430 is connected to the output of the negative power supply, and the secondary winding N _s The other end of the primary winding is used as the output end of the measuring current, and the primary winding N _p Can be connected with the mains supply, and the other end is connected with the electric signal input end of the terminal equipment. As primary winding N _P Presence of a current I to be measured _P Secondary side output current I _S Before forming, the current I to be measured _P The generated magnetic field is gathered by the iron core, and the Hall element in the magnetic circuit of the iron core outputs certain voltage under the action of the magnetic field. The output voltage of the Hall element is processed by an operational amplifier, a push-pull circuit and the like to obtain an output current I _S . Due to the secondary winding N _S Inductive effect of (2), output current I _S The magnetic field generated by the feedback loop gradually counteracts the magnetic field generated by the primary loop, the output voltage of the Hall element is reduced, and the output current I _S Gradually tending to be smooth. Ideally, when I _P N _P ＝I _S N _S When the magnetic induction intensity sensed by the Hall element is zero, the output current I is _S A stable value is reached. The above process is completed in a very short time when the current I to be measured _P While varying, output current I _S With consequent changes.

For some embodiments, the hall sensor 220 may output the collected current signal by using a differential circuit, and then amplify the differential current signal by using an amplifier, where the differential signal after being processed by the amplifier is the current signal. The differential signal is a signal transmission technology, and is different from a traditional method of transmitting signals by using one signal line, the differential signal uses two lines to transmit signals, the amplitudes of the two signals are the same, the phases of the two signals are opposite, the signals transmitted on the two lines are the differential signal, and the signal receiving end is based on the difference value of the two signals. For example, if one line of the differential signal transmits a signal a and the other line transmits a signal B, the differential signal may be a difference between the signal transmitted by the one line and the signal transmitted by the other line, i.e., a-B.

Referring to fig. 5, the hall sensor 220 may include a first signal input terminal, a first ground terminal, a first signal output terminal, and a second signal output terminal. The first signal input end and the first ground end are respectively connected with the power supply module, the first signal output end and the second signal output end are respectively connected with the central control module, the first signal output end and the second signal output end are used for outputting differential signals to the central control module, and the differential signals are used for representing the current values of the current signals of the electric signals.

Further, the hall sensor 220 further includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; one end of the first resistor R1 is connected with the first signal input end, the other end of the first resistor R1 is connected with the first signal output end, one end of the second resistor R2 is connected with the first signal input end, the other end of the second resistor R2 is connected with the second signal output end, one end of the third resistor R3 is connected with the first signal output end, the other end of the third resistor R3526 is connected with the first ground end, one end of the fourth resistor R4 is connected with the second signal output end, and the other end of the fourth resistor R4 is connected with the first ground end. And the signals output by the first signal output end and the second signal output end are differential signals.

For some embodiments, an amplifier may also be used to amplify the current signal between the first and second signal outputs of the hall sensor 220 and the central control module 230. Since the external interference signal is generally present in a common mode, the Common Mode Rejection Ratio (CMRR) of the amplifier using differential signal inputs is very high, e.g., up to 90db or more. The common mode rejection ratio is a parameter for evaluating the rejection capability of the circuit to the common mode signal, and because the common mode signal is usually external disturbance in the differential signal transmission system, the common mode rejection ratio can be regarded as a parameter for the rejection capability to the external disturbance, that is, the higher the common mode rejection ratio is, the stronger the rejection capability of the amplifier to the external disturbance is. Specifically, the common mode rejection ratio is a ratio of a differential mode gain to a common mode gain, wherein the differential mode gain is a ratio of an output signal and an input signal obtained after a differential mode signal is input into the amplifier, for example, the input differential mode signal is d _i The output differential mode signal is d _o Gain of the differential mode

Similarly, the common mode gain is the ratio of the output signal to the input signal obtained after the common mode signal is input into the amplifier, for example, the input common mode signal is c _i The output common mode signal is c _o Then gain of common mode

Common mode rejection ratio at this time

Db is a common measurement unit of signal, and the calculation method is cmrr (db) 20log ₁₀ CMRR。

For some embodiments, the amplifier may be an amplifying circuit composed of a triode or an operational amplifier. A second signal input end of the amplifier is connected to the first signal output end of the hall sensor 220, a third signal input end of the amplifier is connected to the second signal output end of the hall sensor 220, and a third signal output end of the amplifier is connected to the central control module 230. The second signal input terminal and the third signal input terminal amplify the received differential signal, output the amplified differential signal through the third signal output terminal, and transmit the amplified differential signal to the central control module 230, where the signal output through the third signal output terminal is a current signal.

For some embodiments, the power supply module 210 further includes a conversion module, which is configured to convert the ac electrical signal into a dc electrical signal, where the dc electrical signal is a power supply signal. The power supply signal is used to provide a working current signal to the central control module 230 and the hall sensor module 220, so that the central control module 230 and the hall sensor module 220 can work normally. It will be readily appreciated that the voltage of the input dc signal required for the different modules to operate normally is different, for example, 36 vdc for a first module to operate normally and 12 vdc for a second module to operate normally. Further, in some embodiments, the direct current signals with different voltages can be directly output by the conversion module and respectively provided to the corresponding modules. For example, the conversion module may output 36v dc electrical signals to the first module and 12v dc electrical signals to the second module. For other embodiments, the same direct current signal can be output to different modules through the conversion module, and each module converts the voltage of the direct current signal according to the own needs and then uses the converted voltage. For example, the conversion module outputs 12v dc signals to a first module and a second module, respectively, where the first module requires 36v dc signals and the second module requires 12v dc signals. The first module can convert the 12v dc signal into 36v dc signal for use by a circuit with a boost function located in the first module. It is easy to understand that the circuit with the voltage boosting function may also be a circuit with a voltage reducing function to reduce the voltage of the dc signal input by the conversion module to a desired voltage, for example, to reduce the voltage of a 12v dc signal to a 5v dc signal.

Further, for an embodiment provided by the present application, the hall sensor module 220 and the central control module 230 require a 5v dc signal, and the converting module can directly provide the 5v dc signal to the hall sensor module 220 and the central control module 230. Referring to fig. 6, the case where the conversion module directly provides the 5v dc signal is illustrated in fig. 6. It is easy to understand that the conversion module needs to perform transformation process in order to convert 220v voltage into 5v voltage; in order to convert an alternating current signal into a direct current signal, rectification and filtering processing are required; in order to obtain a stable output dc signal, a voltage stabilization process is required.

Referring to fig. 6, the converting module shown in fig. 6 includes a transforming module, a rectifying module, a filtering module, and a voltage stabilizing module. The transformer module comprises a transformer T1, a first input terminal of a transformer T1, a second input terminal of a transformer T1, a first output terminal of a transformer T1 and a second output terminal of a transformer T1. The rectifying module comprises a rectifying module D1, a first input terminal of the rectifying module D1, a second input terminal of the rectifying module D1, a first output terminal of the rectifying module D1, and a second output terminal of the rectifying module D1. The filter module comprises a filter capacitor C1 and a load resistor RL. The voltage regulation module includes a voltage regulation module U1. The voltage transformation module is used for converting the input voltage into the required voltage. The rectifier module is used for converting an alternating current signal into a direct current signal, namely converting sine wave voltage into pulsating voltage in a single direction, wherein the pulsating voltage also contains a large alternating current component. The filtering module is used for filtering alternating current components in the pulsating voltage, output voltage signals are as smooth as possible, and ideally, all the alternating current components are filtered, so that the output electric signals of the filtering circuit are only direct current electric signals. However, since the filter circuit is a passive circuit, the filtering effect is affected when the load is connected. For an electronic circuit with low stability requirement, a direct current signal after rectification and filtration can be used as a power supply signal. The input alternating current signal is converted into a direct current signal with small alternating current component after passing through the transformation module, the rectification module and the filtering module, but when the input alternating current signal fluctuates or the load changes, the voltage of the direct current signal also fluctuates. The voltage stabilizing circuit is used for ensuring that the voltage of the output direct current signal is basically not influenced by the fluctuation of the input alternating current signal and the change of load impedance, thereby obtaining the direct current signal with higher stability.

Further, referring to fig. 6, a first input end of a rectifying module D1 in the rectifying module is connected to a first output end of a transformer T1 in the transforming module, a second input end of the rectifying module D1 is connected to a second output end of the transformer T1, an input end of the transformer T1 is connected to an output end of the ac output module 240, a first output end of the rectifying module D1 is connected to a positive input end of a voltage stabilizing module in the voltage stabilizing module, and a second output end of the rectifying module D1 is connected to a ground end of the voltage stabilizing module. One end of a filter capacitor C1 in the filter module is connected with the first output end of the rectifier module D1, and the other end of the filter capacitor C1 is connected with the second output end of the rectifier module D1. One end of a load resistor RL in the filtering module is connected with the first output end of the rectifying module D1, and the other end of the load resistor RL is connected with the second output end of the rectifying module D1. The output end of the voltage stabilizing module U1 is connected to the hall sensor module 220 and the central control module 230, the ground end is connected to the second ground end, and the input end is connected to the first output end of the rectifier module D1.

Further, the winding ratio between the primary side and the secondary side of the transformer T1 in the transformer module may be determined by the voltage of the input electrical signal that can be borne by the voltage stabilizing module in the voltage stabilizing module. For example, for some embodiments, the voltage level a of the input electrical signal that can be sustained by the voltage stabilizing module in the voltage stabilizing module is a/220 ratio of the primary side and the secondary side of the transformer T1, where 220v is an effective value of the ac power telecommunications, i.e. an ac electrical signal at the input end of the transformer T1. The rectifying module D1 in the rectifying module may be composed of two diodes, and for some embodiments, the corresponding rectification is half-wave rectification. For other embodiments, the number of diodes may be four, and the corresponding rectification is full-wave rectification. The filter capacitor C1 in the filter module may be an electrodeless capacitor, such as a ceramic chip capacitor; it may also be a polar capacitor, such as an aluminum electrolytic capacitor or a tantalum capacitor; an electrodeless capacitor can be connected with a polar capacitor in parallel. The filter module may further include a load resistor RL, which functions as the filter capacitor C1 to stabilize the dc signal output by the rectifier module. The voltage regulator module in the voltage regulator module may be a three-terminal voltage regulator integrated circuit, for example, for one embodiment provided in this application, the voltage regulator module may be LM78L 05.

For some embodiments, the central control module 230 is configured to obtain a target power based on the current signal. The manner of acquiring the current signal is described in detail in the foregoing embodiments, and will not be described herein again. It is readily appreciated that given a known current signal and an ac input voltage, the target power can be obtained by multiplying the current and the voltage. Specifically, if the obtained current signal is ia, the target power p may be 220 iva, where a is a current unit ampere. For example, if the current signal is acquired as 20a, the target power p is 220x20 4400va 4400w, where w is the power unit watt.

It should be noted that, for some embodiments, the obtained current signal may be an effective value, and at this time, the target power consumption may be obtained by directly multiplying the effective value current signal by the ac input voltage. For other embodiments, the obtained current signal may be a peak value, and the peak current signal is converted into a valid value current signal and multiplied by the ac input voltage to obtain the target power consumption.

For some embodiments, the ac input module 240 may provide an ac signal for the power supply module and may also provide an ac signal for other terminal devices, so that the terminal devices can operate normally. In the embodiment provided in the application, the ac signal provided by the ac input module 240 may be 220v 50hz ac signal, where hz is the frequency unit hz.

According to the power detection device, the socket and the power detection system provided by the embodiment of the application, the detection of the original current and the acquisition of the target power are completed through the Hall sensor module, the central control module and the power supply module together, wherein the central control module is respectively connected with the Hall sensor module and the power supply module; the power supply module is used for generating a power supply signal based on the electric signal and supplying power to the Hall sensor module and the central control module; the Hall sensor module is used for being arranged at a position close to a power supply line of the terminal equipment and collecting a current signal of the electric signal in the power supply line; and the central control module is used for acquiring target power based on the current signal. If a special power metering chip is used for obtaining the target power, the design of a peripheral circuit corresponding to the chip is complex, the occupied space is large, and the cost of the chip is high. This application is based on hall sensor module, acquires current signal, and then acquires target power to carry out load detection, the peripheral circuit design that corresponds is simple, only occupies less volume space, simultaneously because need not use special power measurement chip, so the cost is lower.

Referring to fig. 7, fig. 7 shows a socket 120, the socket 120 is used for connecting a terminal device 130, providing an ac signal to the terminal device 130, and detecting the magnitude of the ac signal used by the terminal device 130 through a power detection device 110. The socket 120 includes a power detection device 110, a housing 121, and a receptacle 122. The jack 122 is located on the surface of the housing 121 and is used for connecting a power supply line for transmitting the electrical signal. The electrical signal is an ac signal and is transmitted to the terminal device 130 through the jack 122. The power detection device 110 is coupled to the jack 122 and the wires to which the terminal device 130 is connected to obtain a current signal. The housing 121 may be made of plastic, and the shape thereof may conform to the shape of an 86-type panel. The 86-type panel is a square panel with a length and width of 86 mm. The jack 122 may be a two-hole jack conforming to the national standard, or may be a three-hole jack conforming to the national standard.

Referring to fig. 8, fig. 8 illustrates a power detection system 800 according to an embodiment of the present disclosure, where the power detection system 800 includes a socket 120, a power supply module 210, a hall sensor module 220, a central control module 230, an ac input module 240, and a terminal device 130. The outlet 120 includes a housing 121 and a jack 122, and the terminal 130 includes a terminal power supply line 131. Further, the power supply module 210 is connected to the ac input module 240, the hall sensor module 220, and the central control module 230, respectively. The ac input module 240 is connected to the jack 122 and the power supply module 210, respectively. The jack 122 is connected to the ac input module 240 and the terminal device 130, wherein the jack 122 is connected to the terminal device 130 through the terminal device power supply line 131. The hall sensor module 220 is connected to the power supply module 210 and the central control module 230, respectively, and is coupled to the terminal device power supply line 131. The power supply line 131 may be a copper wire covered by a rubber insulation layer, and the copper wire may be multi-core parallel, for example, 100-core parallel.

Further, the terminal device 130 obtains an ac power supply signal through the jack 122, and the ac power supply signal is transmitted from the jack 122 to the terminal device 130 via the power supply line 131. For an embodiment provided by the present application, the hall sensor module 220 acquires a current signal through coupling with the power supply line 131, where the current signal is used to characterize the current magnitude transmitted to the terminal device 130 on the power supply line 131, and then sends the current signal to the central control module 230, and the central control module 230 performs calculation to acquire the target power. The detailed method has been described in the foregoing embodiments, and will not be described herein.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims (10)

1. A power detection apparatus, comprising: the device comprises a Hall sensor module, a central control module and a power supply module; the central control module is respectively connected with the Hall sensor module and the power supply module;

the power supply module is used for generating a power supply signal based on an electric signal and supplying power to the Hall sensor module and the central control module;

the Hall sensor module is used for being arranged at a position close to a power supply line of the terminal equipment and collecting a current signal of the electric signal in the power supply line;

and the central control module is used for acquiring target power based on the current signal.

2. The apparatus of claim 1, wherein the hall sensor comprises: the first signal input end, the first ground end, the first signal output end and the second signal output end;

the first signal input end and the first ground end are respectively connected with the power supply module, the first signal output end and the second signal output end are respectively connected with the central control module, the first signal output end and the second signal output end are used for outputting differential signals to the central control module, and the differential signals are used for representing the current values of the current signals of the electric signals.

3. The apparatus of claim 2, wherein the hall sensor further comprises:

the circuit comprises a first resistor, a second resistor, a third resistor and a fourth resistor; one end of the first resistor is connected with the first signal input end, the other end of the first resistor is connected with the first signal output end, one end of the second resistor is connected with the first signal input end, the other end of the second resistor is connected with the second signal output end, one end of the third resistor is connected with the first signal output end, the other end of the third resistor is connected with the first ground end, one end of the fourth resistor is connected with the second signal output end, and the other end of the fourth resistor is connected with the first ground end.

4. The device according to claim 1, wherein the electrical signal is alternating current, and the power supply module comprises a conversion module, and the conversion module is respectively connected with the central control module and the hall sensor module; the conversion module is used for converting alternating current into direct current, and the direct current is the power supply signal.

5. The apparatus of claim 4, wherein the conversion module comprises: the input end of the rectification module is connected with the output end of the alternating current, the output end of the rectification module is connected with the input end of the voltage stabilizing module, and the output end of the voltage stabilizing module is respectively connected with the central control module and the Hall sensor module.

6. The apparatus of claim 5, wherein the conversion module further comprises: the rectifier comprises a transformer, the output of rectifier module includes first output and second output, rectifier module's input includes first input and second input, rectifier module's first input with the first output of transformer is connected, rectifier module's second input with the second output of transformer is connected, the input of transformer with the output of alternating current is connected, rectifier module's first output with voltage stabilizing module's positive input end is connected, rectifier module's second output with voltage stabilizing module's ground is connected.

7. The apparatus of claim 6, wherein the conversion module further comprises: and one end of the filter capacitor is connected with the first output end of the rectifying module, and the other end of the filter capacitor is connected with the second output end of the rectifying module.

8. The apparatus of claim 6, wherein the conversion module further comprises: and one end of the load resistor is connected with the first output end of the rectifying module, and the other end of the load resistor is connected with the second output end of the rectifying module.

9. A socket comprising a housing and a power-sensing device of any of claims 1-8, the housing comprising a jack for connecting to a power line for carrying the electrical signal.

10. A power detection system, comprising: a terminal device and a socket according to claim 9;

the terminal equipment is connected with the jacks of the socket.

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