CN220933142U - Plug detection circuit and base - Google Patents

Abstract

The application provides a plug detection circuit and a base, and relates to the technical field of power electronics. The circuit comprises: the circuit breaker comprises a sampling circuit, a sensor arranged in a circuit breaking module and a processing unit arranged in a base; the sampling circuit is a sampling circuit corresponding to the sensor; the input end of the sampling circuit is connected with a sensor in the circuit breaking module; the output end of the sampling circuit is connected with the processing unit. Therefore, the application can realize the plug-in detection of the circuit breaking module at a plurality of plug-in positions on the base.

Description

Plug detection circuit and base

Technical Field

The application relates to the technical field of power electronics, in particular to a plug detection circuit and a base.

Background

At present, the circuit breaking module adopts an independent working mode, namely, a sampling function, a control function, a communication function and the like are integrated in the circuit breaking module, wherein a power module is further integrated in part of the circuit breaking module, so that the volume of the circuit breaking module is larger.

In order to reduce the volume of the circuit breaking module, the prior art performs split design on the base and the circuit breaking module, namely, the internal design sensing module and the execution structure module of the circuit breaking module, and the internal design sampling module, the processing module, the control module and/or the power module of the base.

However, when different circuit breaking modules are plugged into the same base, the base is difficult to plug and unplug the plugged circuit breaking modules due to the fact that the plugging positions of the different circuit breaking modules are uncertain.

Disclosure of utility model

The application aims to provide a plug detection circuit and a base, which can not only confirm the plug-in positions of different circuit breaking modules, but also enable the base to carry out plug detection on the circuit breaking modules when the different circuit breaking modules are plugged into the same base.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows:

In a first aspect, an embodiment of the present application provides a plug detection circuit, including: the circuit breaker comprises a sampling circuit, a sensor arranged in a circuit breaking module and a processing unit arranged in a base; the sampling circuit is a sampling circuit corresponding to the sensor;

The input end of the sampling circuit is connected with a sensor in the circuit breaking module;

And the output end of the sampling circuit is connected with the processing unit.

Optionally, the input end of the sampling circuit is respectively connected with a first connection terminal of a plugging position on the base, and the first connection terminal of each plugging position is connected with a sensor in the circuit breaking module;

The output end of the sampling circuit is connected with a first analog-to-digital sampling pin of the processing unit, and the gating end of the sampling circuit is connected with a gating pin of the processing unit.

Optionally, the functions of the sensor include, but are not limited to: plug detection, temperature detection and switch detection.

Optionally, the sampling circuit includes: a multipath analog signal multiplexer and a sampling unit; the input pins of the multipath analog signal multiplexer are a plurality of input ends of the sampling circuit and are respectively connected with the first connecting terminals of a plurality of plugging positions; the output pin of the multipath analog signal multiplexer is an output end of the sampling circuit and is also connected with a first preset power supply through the sampling unit; and the gating pin of the multipath analog signal multiplexer is the gating end of the sampling circuit.

Optionally, the sampling circuit further includes: a clamp protection unit, the clamp protection unit comprising: the anode of the first clamping diode is a first end of the clamping protection unit and is used for grounding, and the cathode of the first clamping diode is a second end of the clamping protection unit and is used for connecting with an output pin of the multiplexer;

The cathode of the first clamping diode is also connected with the anode of the second clamping diode, and the cathode of the second clamping diode is a third end of the clamping protection unit and is used for being connected with a second preset power supply.

Optionally, the plug detection circuit further includes: the hardware address unit is respectively connected with the second connecting terminals of the plugging positions, and the second connecting terminal of each plugging position is used for connecting the address pins of the memory chip in the circuit breaking module;

The data input pin of the processing unit is connected with the third connecting terminal of the plugging position, and the third connecting terminal of each plugging position is used for connecting the data pin of the memory chip in the circuit breaking module;

The clock output pin of the processing unit is connected with the fourth connecting terminal of the plugging position, and the fourth connecting terminal of each plugging position is used for connecting the clock input pin of the memory chip in the circuit breaking module.

Optionally, the input/output pin of the processing unit is connected to a fifth connection terminal of the plugging position, and the fifth connection terminal of each plugging position is used for connecting a protection pin of a memory chip in the circuit breaking module.

Optionally, the hardware address unit includes: the circuit comprises a pull-up resistor, a pull-down resistor and a capacitor, wherein one end of the pull-down resistor is grounded, the other end of the pull-down resistor is connected with a sixth connecting terminal of a first plug-in position in the plug-in position, and the sixth connecting terminal of the first plug-in position is used for connecting a low-level pin in address pins of a memory chip in a corresponding circuit breaking module;

One end of the pull-up resistor is connected with a third preset power supply, the other end of the pull-up resistor is grounded through the capacitor, the other end of the pull-up resistor is also connected with a seventh connecting terminal of a second plugging position in the plugging position, and the seventh connecting terminal of the second plugging position is used for connecting a high-level pin in address pins of a memory chip in a corresponding circuit breaking module.

Optionally, the plug detection circuit further includes: a resistor; one end of the resistor is respectively connected with a fourth preset power supply, the other end of the resistor is respectively connected with an eighth connecting terminal at the plugging position, the eighth connecting terminal at the plugging position is used for being connected with a positive connecting terminal of the circuit breaking module, and the other end of the resistor is respectively connected with a second analog-digital sampling pin of the processing unit.

In a second aspect, an embodiment of the present application provides a base, where the base is provided with: the sampling circuit and the processing unit in the plug detection circuit according to any one of the first aspect, and a plug position;

The plug detection circuit is connected with the connecting terminal at the plug position, and when the plug position is plugged with the circuit breaking module, a sensor in the circuit breaking module is connected with the sampling circuit.

The beneficial effects of the application are as follows:

The application provides a plug detection circuit and a base, wherein the plug detection circuit can comprise a sampling circuit, a sensor arranged in a circuit breaking module and a processing unit arranged in the base; the sampling circuit is a sampling circuit corresponding to the sensor; the input end of the sampling circuit is connected with a sensor in the circuit breaking module; the output end of the sampling circuit is connected with the processing unit. Therefore, the application can complete the acquisition of the internal sensing signal in one circuit breaking module by the internal sensing signal transmitted by the sensor in the circuit breaking module input by the sampling circuit, and the acquired internal sensing signal in one circuit breaking module is connected with the processing unit through the output end of the sampling circuit, so that when the circuit breaking modules with different specifications are inserted into the same base, the insertion positions of the circuit breaking modules with different specifications can be confirmed, and the base can also identify the specific specifications of the circuit breaking module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a circuit breaker according to an embodiment of the present application;

Fig. 3 is a schematic structural diagram of a base according to an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a plug detection circuit according to an embodiment of the present application;

fig. 5 is a schematic diagram of a plug detection circuit according to a second embodiment of the present application;

fig. 6 is a schematic structural diagram III of a plug detection circuit according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a plug detection circuit according to an embodiment of the present application;

fig. 8 is a schematic diagram of a plug detection circuit according to an embodiment of the present application;

fig. 9 is a schematic diagram of a plug detection circuit according to an embodiment of the present application;

Fig. 10 is a schematic diagram seventh of a plug detection circuit according to an embodiment of the present application;

fig. 11 is a schematic structural diagram eight of a plug detection circuit according to an embodiment of the present application;

fig. 12 is a schematic diagram of a plug detection circuit according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a plug detection circuit according to an embodiment of the present application;

Fig. 14 is a flowchart of a detection and identification method for a circuit breaking module according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in place when the inventive product is used, or those conventionally understood by those skilled in the art, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

For the sake of clearly describing the plug detection circuit provided by the embodiment of the application, a base corresponding to the plug detection circuit and a circuit breaking device corresponding to the base are described in detail with reference to the accompanying drawings. Fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present application. As shown in fig. 1, the circuit breaking apparatus 500 includes: a base 300 and at least one circuit interrupting module 400 plugged onto the base 300.

The plurality of plugging positions on the base 300 are respectively used for plugging the at least one circuit breaking module 400, so that the at least one circuit breaking module 400 can be plugged on the same base 300, and the same base 300 can identify the plugging position of the at least one circuit breaking module 400, so that the base can conveniently plug and unplug the at least one circuit breaking module 400.

It should be noted that, in the above embodiment, the plugging positions on the base 300 may be one or more, but not limited to, if the plugging positions on the base 300 may be one, the corresponding breaking modules 400 are also 1, and if the plugging positions on the base 300 may be multiple, the corresponding breaking modules 400 are also multiple.

Further, in order to clearly describe the circuit breaking device 500 provided in the above embodiment, the present application further provides a schematic structural diagram of another circuit breaking module, and fig. 2 is a schematic structural diagram of a second circuit breaking device 500 provided in the embodiment of the present application.

As shown in fig. 2, a plurality of plugging positions are disposed on the base 300, and at least one circuit breaking module 400 can be plugged in any one of the plugging positions on the base 300, so that the base 300 can identify the plugging position of the at least one circuit breaking module 400, and further the plug detection of the base on the at least one circuit breaking module 400 can be realized.

The following will further describe the base corresponding to the plug detection circuit in detail with reference to the accompanying drawings. Fig. 3 is a schematic structural diagram of a base according to an embodiment of the present application. As shown in fig. 3, the base 300 is provided with: a sampling single pass and processing unit in the plug detect circuit 100, and at least one plug position 200.

The plug detection circuit 100 is connected to a connection terminal of at least one plug position 200, the at least one plug position 200 is respectively used for plugging at least one breaking module, and a sensor in the at least one breaking module is connected to the sampling circuit, so that data of the at least one breaking module plugged on the base is transmitted to the sampling circuit in the plug detection circuit 100 on the base through the connection terminal of the at least one plug position 200 on the base, and further, different data of the breaking modules are analyzed by the processing unit, and further, the different breaking modules can be mounted on the same base 300, so that the base 300 can perform plug detection on the breaking modules 400.

The following describes the plug detection circuit provided by the embodiment of the application in detail with reference to the accompanying drawings. Fig. 4 is a schematic structural diagram of a plug detection circuit according to an embodiment of the present application. As shown in fig. 4, the plug detection circuit 100 includes: sampling circuit 110, processing unit 120 disposed on base 300, and sensor 130 disposed in circuit breaking module 400.

The sampling circuit 110 is a sampling circuit corresponding to the sensor 130, so that signals between the sensor 130 and the sampling circuit 110 can be transmitted.

It should be noted that, at least one sensor 130 is disposed in each circuit breaking module 400, and the circuit breaking modules 400 may be plural or one. In addition, it should be noted that the sampling circuit 110 in the embodiment of the present application is disposed in the base 300, so as to facilitate signal transmission with the sensor 130 in the circuit breaking module 400.

For clarity of explanation of the embodiment of the present application, the embodiment of the present application uses 1 sensor 130 in 1 breaking module 400 as shown in fig. 4.

The input end of the sampling circuit is connected with the sensor in the circuit breaking module, the output end of the sampling circuit is connected with the processing unit so as to complete the acquisition of the internal sensing signal in one circuit breaking module by the internal sensing signal transmitted by the sensor in the circuit breaking module of the input of the sampling circuit, and the acquired internal sensing signal in one circuit breaking module is connected with the processing unit through the output end of the sampling circuit, so that the base can identify the specific specification of the circuit breaking module when the circuit breaking modules with different specifications are inserted into the same base.

It should be noted that, when there are 1 sensor 130 in the plurality of circuit breaking modules 400, the present application can realize that the plugging positions of circuit breaking modules with different specifications can be confirmed when circuit breaking modules with different specifications are plugged into the same base based on the sampling circuit 110, the processing unit 120 arranged on the base 300, and the sensor 130 arranged in the circuit breaking module 400.

The application provides a plug detection circuit and a base, wherein the plug detection circuit can comprise a sampling circuit, a sensor arranged in a circuit breaking module and a processing unit arranged in the base; the sampling circuit is a sampling circuit corresponding to the sensor; the input end of the sampling circuit is connected with a sensor in the circuit breaking module; the output end of the sampling circuit is connected with the processing unit. Therefore, the application can complete the acquisition of the internal sensing signal in one circuit breaking module by the internal sensing signal transmitted by the sensor in the circuit breaking module input by the sampling circuit, and the acquired internal sensing signal in one circuit breaking module is connected with the processing unit through the output end of the sampling circuit, so that when the circuit breaking modules with different specifications are inserted into the same base, the insertion positions of the circuit breaking modules with different specifications can be confirmed, and the base can also identify the specific specifications of the circuit breaking module.

The following describes the plug detection circuit provided by the embodiment of the application in detail with reference to the accompanying drawings. Fig. 5 is a schematic diagram of a plug detection circuit according to a second embodiment of the present application. As shown in fig. 5, the input end of the sampling circuit 110 is respectively connected to the first connection terminals of the plugging positions on the base 300, and the first connection terminal of each plugging position is connected to the sensor 130 in one circuit breaking module 400; an output end of the sampling circuit 110 is connected to a first analog-to-digital sampling pin of the processing unit 120, and a gating end of the sampling circuit 110 is connected to a gating pin of the processing unit 120.

It should be noted that, for clarity of illustration of the plug-in detection circuit in the embodiment of the present application, fig. 5 illustrates that a plurality of breaking modules 400 have 1 sensor 130, as shown in fig. 5, a plurality of input ends (for example, X1 to Xn) of the sampling circuit 110 are respectively connected to first connection terminals of a plurality of plugging positions on the base, and the first connection terminal of each plugging position is used for connecting to the sensor 130 in one breaking module, so that an internal sensing signal in one breaking module is transmitted to the sampling circuit 110 through the first connection terminal of each plugging position by the sensor 130 in at least one breaking module. The output end X of the sampling circuit 110 is connected to the first analog-to-digital sampling pin NTCA of the processing unit 120, so that the sampling circuit 110 on the base transmits the detected internal sensing signal in the at least one circuit breaking module to the processing unit 120 for subsequent processing; and further can be used as a detection basis for whether at least one circuit breaking module is inserted into the base.

Meanwhile, the gating end (e.g. A, B, C) of the sampling circuit 110 is further connected to the gating pins (e.g. NTCA-S3, NTCA-S2 and NTCA-S1) of the processing unit 120, so that the sampling circuit 110 on the base can conveniently input address codes according to the gating pins of the processing unit 120, and further the processing unit 120 can conveniently obtain internal sensing signals detected by the sensor 130 in the circuit breaking module of the target plugging position in the plurality of plugging positions sampled by the sampling circuit 110, that is, the processing unit 120 can obtain the internal sensing signals of the circuit breaking module corresponding to the plurality of plugging positions through the sampling circuit 110, and then plug-in detection of the circuit breaking module is performed on the plurality of plugging positions based on the internal sensing signals, so that plug-in detection of the circuit breaking module at the plurality of plugging positions on the base is realized.

It should be noted that, the sensor 130 disposed in the plurality of circuit breaking modules 400 is disposed on the circuit breaking modules 400, and the first connection terminal of each plugging position is connected to the sensor 130 in one circuit breaking module 400, that is, the plurality of plugging positions are respectively used for plugging the plurality of circuit breaking modules 400, so that the data of the plurality of circuit breaking modules 400 plugged on the base are transmitted to the plug detection circuit 100 on the base through the connection terminals of the plurality of plugging positions on the base, and further different data of the plurality of circuit breaking modules 400 are analyzed, so that different circuit breaking modules can be mounted on the same base 300, and the base 300 can perform plug detection on the plurality of circuit breaking modules 400.

The sampling circuit 110 is a sampled integrated circuit, and the sampling circuit 110 has a plurality of input terminals, an output terminal and a strobe terminal. The processing unit 120 is a control unit of a single-chip microcomputer.

As a possible implementation, taking fig. 5 as an example, any input terminal of the sampling circuit 110 may be connected to a first connection terminal of a plurality of plugging positions, where the first connection terminal of each plugging position is used to connect to the sensor 130 in one circuit breaking module. For example, when the strobe pins (such as NTCA-S3, NTCA-S2 and NTCA-S1) of the processing unit 120 input the address code to be detected, such as 001, to the strobe terminal ((such as A, B, C)) of the sampling circuit 110, the strobe terminal in the sampling circuit 110 may connect the sensor 130 of one circuit breaker module to be plugged in with the first connection terminal of the corresponding input terminal X1 of the sampling circuit 110 after receiving the address code 001, at this time, the internal sensing signal of the sensor 130-2 of one circuit breaker module to be plugged in, which is connected with the first connection terminal of the corresponding input terminal X1, may be transferred to the sampling circuit 110 on the base, and the sampling circuit 110 may transmit the sensing data on the sampling circuit 110 to the first analog-to-digital sampling pin NTCA of the processing unit 120 through one output terminal (such as X) thereof, so as to realize detecting the internal sensing signal of one circuit breaker module, and at the same time, the internal sensing signal may be used as a detection basis for detecting whether the one circuit breaker module is plugged in or not, and realizing the detection of multiple circuit breaker modules plugged in the base.

It should be noted that, in the above embodiment, the strobe pins (such as NTCA-S3, NTCA-S2 and NTCA-S1) of the processing unit are the IO ports of the processing unit, and the input ends of the sampling circuits 110 on different bases can be strobed in a binary coding manner, so that the corresponding strobe address code is obtained to correspond to one circuit breaking module to sample the internal sensing signal.

The application provides a plug detection circuit, wherein the input end of a sampling circuit is respectively connected with first connecting terminals at plug-in positions on a base, and the first connecting terminal at each plug-in position is connected with a sensor in a circuit breaking module; the output end of the sampling circuit is connected with a first analog-digital sampling pin of the processing unit, and the gating end of the sampling circuit is connected with a gating pin of the processing unit. Therefore, the application can be connected with the gating pin of the processing unit through the gating end of the sampling circuit, so that the base can conveniently determine the internal sensing signal of one circuit breaking module corresponding to the address code of at least one circuit breaking module to be detected, based on the input information of the gating end of the sampling circuit, the input end of the sampling circuit is connected with the first connecting terminal corresponding to the plugging position and is connected with the sensing element in one circuit breaking module, the acquisition of the internal sensing signal in one circuit breaking module is completed, and the acquired internal sensing signal in one circuit breaking module is transmitted to the processing unit through the first analog-to-digital sampling pin of the processing unit connected with the output end of the sampling circuit, so that when the circuit breaking modules with different specifications are plugged into the same base, the plugging positions of the circuit breaking modules with different specifications can be confirmed, and the base can also recognize the specific specifications of the circuit breaking module.

As an alternative embodiment, the functions of the sensor 130 described above include, but are not limited to: plug detection, temperature detection and switch detection.

Alternatively, sensor 130 includes, but is not limited to, a ranging sensor, or a temperature sensor.

The temperature sensor may be selected according to practical situations, for example, a temperature sensing element NTC (Negative Temperature Coefficient, NTC thermistor) resistor.

The distance measuring sensor can be selected according to practical situations, such as an ultrasonic distance measuring sensor, a laser distance measuring sensor, an infrared distance measuring sensor and the like.

Alternatively, different or the same functions may be implemented according to different sensors 130, for example, the plug detection may be implemented through a temperature sensing element NTC resistor; or temperature detection or switch detection is realized through a temperature sensing element NTC resistor.

An example of a temperature sampling circuit provided by the present application is described in detail below with reference to the accompanying drawings. Fig. 6 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. In the example of fig. 6, the sampling circuit 110 in the plug detection circuit 100 may include: a multiplexer U1 for multiplexing analog signals, and a sampling unit R1.

The multiple input pins of the multiple analog signal multiplexer U1 are multiple input ends of the sampling circuit 110, so as to be respectively connected with the first connection terminals of the multiple plugging positions, so that specific specification data of the multiple circuit breaking modules plugged on the base can be transmitted to the plug detection circuit 100 on the base through the connection terminals of the multiple plugging positions 200 on the base. For example, as shown in fig. 5, the multiple input terminals of the multiple analog signal multiplexer U1 have, for example, X0 to X7, that is, each input terminal of the multiple analog signal multiplexer U1 is correspondingly connected to a first connection terminal in multiple plugging positions. The multiple analog signal multiplexer U1 is a device for selecting any one of a plurality of input signals and connecting the selected input signal to an output or transmission line, and the multiple analog signal multiplexer U1 may be selected according to practical situations, for example, the multiple analog signal multiplexer U1 may be selected as an SGM48751 chip.

The output pin X of the multiplexer U1 is an output end of the sampling circuit 110, the output pin of the multiplexer U1 is further connected to a first preset power supply through the sampling unit R1, so that after the sensor NTC corresponding to the plurality of circuit breaking modules is connected to a plugging position corresponding to the input end of the multiplexer U1, the sampling unit R1 and the sensor NTC form a voltage division sampling circuit, and then the output pin X of the multiplexer U1 is connected to the first analog-digital sampling pin NTCA of the processing unit 120, so that the signal of the first analog-digital sampling pin NTCA is a voltage after the voltage division between the sampling unit R1 and the sensor NTC, and the voltage is lower than the voltage of the first preset power supply. The first preset power supply is a reference power supply of the sampling circuit 110, which may be selected as a reference power supply of 3V.

It should be noted that, in the above embodiment, the voltage of the voltage division sampling circuit formed by the sampling unit R1 and the sensor NTC is related to the resistance values of the sampling unit R1 and the sensor NTC, and may be selected according to practical situations, for example, the resistance values of the sampling unit R1 and the sensor NTC may be set to 10kΩ.

In the embodiment of the present application, three strobe pins of the multiplexer U1 are A, B and C, respectively, and the strobe pins of the multiplexer U1 are 3 IO ports, which are correspondingly connected to the strobe pins of the processing unit 120 (such as NTCA-S3, NTCA-S2 and NTCA-S1). The gating pin of the multi-path analog signal multiplexer U1 can realize detection of internal sensing signals of the 8-path circuit breaking module in a polling mode with the output pin X of the 1-path multi-path analog signal multiplexer U1.

It should be noted that, in the multiplexer U1 provided in the above embodiment, the pins included in the multiplexer U1 further include: an enable pin EN, a power supply pin VCC, and a ground pin GND.

The enable pin EN is connected to the ground pin GND, so that the enable pin EN in the multiple analog signal multiplexer U1 is always in an enabled state, i.e., the enable pin EN in the multiple analog signal multiplexer U1 needs to be connected to an active low level signal, so that the multiple analog signal multiplexer U1 is in an enabled state.

The application provides a plug detection circuit, wherein a plurality of input pins of a multipath analog signal multiplexer are a plurality of input ends of a temperature sampling circuit so as to be respectively connected with first connection terminals of a plurality of plug positions; the output pin of the multi-channel analog signal multiplexer is the output end of the temperature sampling circuit, the output pin of the multi-channel analog signal multiplexer is also connected with a first preset power supply through a sampling resistor, and the gating pin of the multi-channel analog signal multiplexer is the gating end of the temperature sampling circuit. Therefore, the application can be connected with the gating pin of the processing unit through the gating pin of the multipath analog signal multiplexer so as to facilitate the base to determine the internal sensing signal of one circuit breaker module corresponding to the address code of at least one circuit breaker module to be detected, and based on the input information of the gating pin of the multipath analog signal multiplexer, a plurality of input pins of the multipath analog signal multiplexer are connected with the first connecting terminal corresponding to the plugging position and connected with the sensor in one circuit breaker module so as to complete the acquisition of the internal sensing signal in one circuit breaker module, and the acquired internal sensing signal in one circuit breaker module is transmitted to the processing unit through the first analog-to-digital sampling pin of the processing unit connected with the output pin of the multipath analog signal multiplexer, so that when the circuit breaker modules with different specifications are plugged into the same base, the plugging positions of different circuit breaker modules can be determined, and the base can also perform plugging detection on the circuit breaker modules.

As an alternative implementation manner, some possible implementation examples of the temperature sampling circuit are provided in the embodiment of the present application. Fig. 7 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. As shown in fig. 7, the sampling circuit 110 in the plug detection circuit 100 further includes: and a filtering unit C1.

The output pin X of the multiplexer U1 is further grounded through the filtering unit C1, so as to perform data filtering on the internal sensing signal output by the output pin X of the multiplexer U1, so as to provide the first analog-digital sampling pin NTCA of the processing unit 120 with the internal sensing signal to be processed, i.e. remove unwanted components of the processing unit 120 in the internal sensing signal or enhance the required components.

As an alternative implementation manner, some possible implementation examples of the temperature sampling circuit are provided in the embodiment of the present application. Fig. 8 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. As shown in fig. 8, the sampling circuit 110 in the plug detection circuit 100 further includes: a clamp protection unit 111.

Wherein the first end of the clamp protection unit 111 is grounded to protect the clamp protection unit 111; the second end of the clamping protection unit 111 is connected with the output pin X of the multi-channel analog signal multiplexer U1, so as to ensure that the voltage of the first analog-digital sampling pin NTCA of the processing unit 120 connected with the output pin X of the multi-channel analog signal multiplexer U1 is not too high or too low, thereby avoiding the damage of the first analog-digital sampling pin NTCA of the processing unit 120; the third terminal of the clamp protection unit 111 is connected to a second preset power supply to provide an electrical signal for the clamp protection unit 111 to work normally, where the second preset power supply may be selected according to practical situations, for example, the second preset power supply may be selected as a preset power supply of 3.3V.

As an alternative implementation manner, the embodiment of the application further provides a possible implementation example of the clamp protection unit. Fig. 9 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. As shown in fig. 9, the clamp protection unit 111 in the plug detection circuit 100 may include: a first clamping diode D1-1 and a second clamping diode D1-2.

The anode of the first clamping diode D1-1 is a first end of the clamping protection unit 111, and is used for grounding, so as to perform circuit protection on the first clamping diode D1-1 in the clamping protection unit 111; the cathode of the first clamping diode D1-1 is a second end of the clamping protection unit 111, and is used for being connected with the output pin X of the multi-channel analog signal multiplexer U1, so as to ensure that the voltage of the first analog-digital sampling pin NTCA of the processing unit 120 connected with the output pin X of the multi-channel analog signal multiplexer U1 is not too high or too low, and further avoid the damage of the first analog-digital sampling pin NTCA of the processing unit 120; the cathode of the first clamping diode D1-1 is further connected to the anode of the second clamping diode D1-2, and the cathode of the second clamping diode D1-2 is a third terminal of the clamping protection unit 111 and is used for being connected to a second preset power supply to provide an electrical signal for the second clamping diode D1-2 in the clamping protection unit 111 to work normally, wherein the second preset power supply can be selected as a preset power supply of 3.3V.

An example of a plug detection circuit provided by the present application is described in detail below with reference to the accompanying drawings. Fig. 10 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. In the example of fig. 10, the plug detection circuit 100 further includes: a hardware address unit 140.

The hardware address unit 140 is respectively connected to the second connection terminals of the plurality of plugging positions, and the second connection terminal of each plugging position is used for connecting an address pin (such as A2) of the memory chip U2 in one breaking module, so that the address of the second connection terminal of the plurality of plugging positions set on the base through the level signal set by the hardware address unit 140, such as setting up 8 different addresses of 000, 001 … … 111, etc., can be correspondingly connected to the communication address of the different breaking module when the at least one breaking module is plugged into the second connection terminal of the different plugging position on the base, and the plugging position of the at least one breaking module can be identified through the address.

It should be noted that the memory chip U2 in one circuit breaking module may be selected according to practical situations, for example, the memory chip U2 in the one circuit breaking module may be selected as a BL24C128A chip.

The data input pin SDA of the processing unit 120 is connected to the third connection terminals of the plurality of plugging positions, and the third connection terminal of each plugging position is used for connecting the data pin SDA of the memory chip U2 in one breaking module, so as to control the data input pin SDA of the processing unit 120 to be connected with the data pin SDA of the memory chip U2 in one breaking module, and realize bidirectional intercommunication between the data of the data input pin SDA of the processing unit 120 and the data of the data pin SDA of the memory chip U2 in one breaking module.

The clock output pin SCL of the processing unit 120 is connected to the fourth connection terminals of the plurality of socket locations, and the fourth connection terminal of each socket location is used for connecting the clock input pin SCL of the memory chip U2 in one circuit breaking module to synchronize the time signal of the clock output pin SCL of the processing unit 120 with the time signal of the clock input pin SCL of the memory chip U2 in one circuit breaking module.

Illustratively, taking the memory chip U2 in one circuit breaking module as a BL24C128A chip, the BL24C128A chip includes: one input pin A2, two empty pins NC-1 and NC-2, a ground pin GND, a power pin VCC, a data pin SDA, a clock input pin SCL, and a guard pin WP.

Because the address code provided by the embodiment of the application is a three-bit address, two empty pins NC-1 and NC-2 and one input pin A2 can be used as address pins of a memory chip U2 in one circuit breaking module, so that the address of the second connection terminals of a plurality of plugging positions arranged on the base can be set through the level signal set by the hardware address unit 140, and when at least one circuit breaking module is plugged into the second connection terminals of different plugging positions on the base, the communication addresses of different circuit breaking modules can be correspondingly connected, and the plugging position of at least one circuit breaking module can be identified through the address.

The data pin SDA of the memory chip U2 in one circuit breaking module may control the data input pin SDA of the processing unit 120 to be connected with the data pin SDA of the memory chip U2 in one circuit breaking module, and implement bidirectional intercommunication between the data of the data input pin SDA of the processing unit 120 and the data of the data pin SDA of the memory chip U2 in one circuit breaking module.

The clock input pin SCL of the memory chip U2 in one breaking module may realize synchronizing the time signal of the clock output pin SCL of the processing unit 120 with the time signal of the clock input pin SCL of the memory chip U2 in one breaking module.

As an alternative implementation manner, the present application further provides a possible implementation manner of the processing unit on the basis of fig. 10, and fig. 11 is a schematic structural diagram eight of a plug detection circuit provided by an embodiment of the present application. In the example of fig. 11, the input/output pin IO port of the processing unit 120 is connected to a fifth connection terminal of a plurality of socket locations, and the fifth connection terminal of each socket location is used to connect to the protection pin WP of the memory chip U2 in one circuit breaking module.

Since the memory chip U2 in one circuit breaking module is readable and writable for data, the protection pin WP of the memory chip U2 in one circuit breaking module needs to be connected to the IO port (e.g. K0-K7) of the processing unit 120, so that the processing unit 120 controls writing of data, and when the memory chip U2 in one circuit breaking module is in the data writing state and the read-only state, the state of the memory chip U2 in one circuit breaking module can be changed by changing the protection pin WP.

It should be noted that, in general, the data writing operation is performed on the memory chip U2 in one circuit breaking module when the circuit breaking module is in the production process or in the case of human intervention.

And the inside of each circuit breaking module is provided with a key K1, the normal state of the key K1 is an open circuit state, and the signal of the key K1 can be connected to the IO port (such as K0-K7) corresponding to the processing unit 120, so that the key K1 can be used as a feedback signal of a switch signal for writing data of the memory chip U2 in one circuit breaking module.

The protection pin WP of the memory chip U2 in one circuit breaking module is connected to a key K1, and the key K1 is placed in one circuit breaking module; when the key K1 is pressed for a long time, that is, when the key K1 is in a closed state, the data input pin SDA of the processing unit 120 is correspondingly connected with the data pin SDA of the storage chip U2 in one circuit breaking module to perform data replacement writing, so that the production and maintenance of the base and the plurality of circuit breaking modules can be realized, the data erroneous erasure writing when the base and the plurality of circuit breaking modules are used daily can be prevented, and further, when each circuit breaking module is inserted into the base, the IO port resource of the 1-way processing unit 120 can be saved.

As an alternative implementation manner, the embodiment of the application also provides a possible implementation example of the hardware address unit. Fig. 12 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. As shown in fig. 12, the hardware address unit 140 may include: pull-up resistor R4, pull-down resistor R3, and capacitor C3.

One end of the pull-down resistor R3 is grounded, so that the hardware address unit 140 provides a low (low) level signal; the other end of the pull-down resistor R3 is connected with a sixth connecting terminal of a first plugging position in a plurality of plugging positions, and the sixth connecting terminal of the first plugging position is used for connecting a LOW-level pin LOW in an address pin of a memory chip U2 in a corresponding circuit breaking module; one end of the pull-up resistor R4 is connected to a third preset power supply, so that the hardware address unit 140 provides a high (high) level signal; the other end of the pull-up resistor R4 is grounded through a capacitor C3, the other end of the pull-up resistor R4 is further connected to a seventh connection terminal of a second plugging position among the plurality of plugging positions, and the seventh connection terminal of the second plugging position is used for connecting a HIGH level pin HIGH in an address pin of the memory chip U2 in the corresponding circuit breaking module, so that a low (low) level signal and a HIGH (HIGH) level signal set by the hardware address unit 140 are used, and when the addresses of the plurality of plugging positions set on the base, such as 8 different addresses including 000, 001 … … and 111, are set, and when at least one circuit breaking module is plugged into the different plugging positions on the base, the communication address of the different circuit breaking module can be correspondingly switched on, and the plugging position of the at least one circuit breaking module can be identified through the address.

The third preset power source may be selected according to practical situations, for example, the third preset power source may be selected to be 3.3V.

An example of a plug detection circuit provided by the present application is described in detail below with reference to the accompanying drawings. Fig. 13 is a schematic diagram of a plug detection circuit according to an embodiment of the present application. In the example of fig. 13, the plug detection circuit 100 further includes: and a resistor 150.

It should be noted that, for clarity of illustration of the plug-in detection circuit in the embodiment of the present application, fig. 13 illustrates that the plug-in detection circuit 100 may include a plurality of resistors 150, as shown in fig. 13, one end of each resistor 150 is respectively connected to a fourth preset power VCC to provide an electrical signal for normal operation for each resistor 150, the other end of each resistor 150 is connected to an eighth connection terminal of a corresponding plugging position, the eighth connection terminal of each plugging position is used to connect to a positive terminal of one circuit breaking module, and the other end of each resistor 150 is connected to a plurality of second analog-to-digital sampling pins NTCA of the processing unit 120, so that an internal sensing signal in one circuit breaking module is transmitted to the sampling circuit 110 through the eighth connection terminal of each plugging position by 1 resistor 150. The fourth preset power VCC may be selected according to practical situations, for example, the output voltage of the fourth preset power VCC may be 3.3V.

It should be noted that, when the types of the circuit breaking modules are few (e.g., 2), the circuit breaking modules may be plugged and unplugged by using an analog signal to identify the specific specification of at least one circuit breaking module. For example, by using one path of multiple second analog-to-digital (AD) sampling, after the 1 resistor 150 built in the circuit breaking module with different specifications is divided with the sampling unit R1 on the base, different divided voltage values can be obtained, and the divided voltage values are collected to distinguish the specific specifications of the different circuit breaking modules.

In one possible implementation scheme, specific specifications of 3 different circuit breaking modules can be identified through 1 resistor 150 in the circuit breaking module, for example, if the resistance value of a sampling unit R1 on the base is R, when the resistance value of one resistor R2 inserted into one circuit breaking module of the base is R/2, the sampling unit R1 and the resistor R2 are divided, and the obtained divided voltage value is 1/3×vcc; when the resistance value of a resistor R2 inserted into one circuit breaking module of the base is R, the sampling unit R1 and the resistor R2 are divided, and the obtained divided voltage value is 1/2 VCC; when the resistance of a resistor R2 inserted into one of the breaking modules of the base is 2*R, the sampling unit R1 and the resistor R2 are divided, and the obtained divided voltage value is 2/3×vcc.

In order to facilitate understanding the above-mentioned plug detection circuit and the base, the embodiment of the present application further provides an example of a flow of a detection and identification method for at least one circuit breaking module, where the flow uses a sensor as a temperature sensing element NTC as an example, and the following description is continued with reference to the accompanying drawings, and fig. 14 is a flowchart of a detection and identification method for a circuit breaking module provided by the embodiment of the present application. As shown in fig. 14, the sampling polling method provided by the embodiment of the present application may include:

S601, starting.

Specifically, the initial detection channel may be set to 000, that is, the initial detection channel corresponds to the address code set by the hardware address unit 140.

S602, switching detection channels, and performing first analog-to-digital sampling.

Specifically, the gate pins in the processing unit 120 such as (NTCA-S3, NTCA-S2 and NTCA-S1) can be controlled to input the address codes to be detected to the gate end of the sampling circuit 110, so as to realize the switching of the detection channels, and the first analog-to-digital sampling of the internal sensing signals of the corresponding breaking modules is performed according to the address code corresponding to each detection channel.

S603, judging whether the value of the first analog-to-digital sampling is larger than a preset value. If the value is greater than the preset value, step S604 is executed; if the value is smaller than the preset value, step S605 is executed.

Specifically, it is determined whether the value of the first analog-to-digital sample of the real-time samples is greater than a preset value. The preset value can be selected according to actual conditions.

S604, if the value of the first analog-to-digital sample is larger than a preset value, judging whether the value of the first analog-to-digital sample of the corresponding detection channel is larger than a set value or not during the sampling cycle. If the value is greater than the preset value, executing step S606; if the value is smaller than the preset value, step S608 is executed.

S605, if the value of the first analog-to-digital sample is smaller than the preset value, judging whether the value of the first analog-to-digital sample of the corresponding detection channel is smaller than the set value or not during the sampling cycle. If the value is smaller than the preset value, step S609 is executed; if the value is greater than the preset value, step S610 is performed.

S606, if the value of the first analog-to-digital sample is larger than a preset value, and when the value of the first analog-to-digital sample of the corresponding detection channel is larger than a set value in the sampling cycle, the detection channel performs preset change.

Specifically, when the value of the first analog-to-digital sample of the corresponding detection channel is greater than the set value in the above-mentioned sampling cycle, the preset change is performed on the current detection channel, and the preset change may be to increase the unit channel for the current detection channel, which is not limited herein.

S607, judging whether the preset change of the detection channels is larger than the preset maximum detection channel number. If yes, go to step S612; if not, the process returns to step S602.

Specifically, for the preset change of the current detection channel in step S606, it is determined whether the preset change of the detection channels is greater than the preset maximum number of detection channels. The preset maximum number of detection channels may be selected according to practical situations, for example, the preset maximum number of detection channels may be selected to be 8.

And S608, if the value of the first analog-to-digital sampling is larger than a preset value, and when the value of the first analog-to-digital sampling of the corresponding detection channel is smaller than a set value in the sampling cycle, changing the plugging state of the circuit breaking module corresponding to the detection channel, and recording.

S609, if the value of the first analog-to-digital sample is smaller than the preset value, when the value of the first analog-to-digital sample of the corresponding detection channel is smaller than the set value in the sampling cycle, converting the corresponding internal sensing signal of the first analog-to-digital sample into a temperature value, and recording.

And S610, if the value of the first analog-to-digital sampling is smaller than a preset value, when the sampling cycle is performed, changing the plugging state of the circuit breaking module corresponding to the detection channel and reading the stored data if the value of the first analog-to-digital sampling of the corresponding detection channel is larger than a set value.

The storage data is data in a memory chip U2 provided inside each breaking module, and for example, the data may be EEROM data.

S611, converting the read storage data into a temperature value and recording.

Specifically, digital-analog conversion can be performed according to the stored data to obtain an actual temperature value, and the actual temperature value is correspondingly counted into the memory chip U2.

S612, ending the round of circulation.

It should be noted that, in the embodiment of the sampling and polling method, the communication module may be connected with the outside to implement automatic update of the display end (such as a mobile phone or a screen) to the position of the breaking module and other parameters. The other parameters may be, for example, specification parameters, protection parameters, calibration parameters, operation times, and other useful information of the circuit breaking module.

It should be noted that, for specific implementation and technical effects of the plug detection circuit and the base, reference is made to the embodiments of the plug detection circuit and the base, and details are not repeated here.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A plug detection circuit, the plug detection circuit comprising: the circuit breaker comprises a sampling circuit, a sensor arranged in a circuit breaking module and a processing unit arranged in a base; the sampling circuit is a sampling circuit corresponding to the sensor;

The input end of the sampling circuit is connected with a sensor in the circuit breaking module;

And the output end of the sampling circuit is connected with the processing unit.

2. The plug detection circuit of claim 1, wherein the input end of the sampling circuit is respectively connected with a first connection terminal of a plugging position on the base, and the first connection terminal of each plugging position is connected with a sensor in a circuit breaking module;

The output end of the sampling circuit is connected with a first analog-to-digital sampling pin of the processing unit, and the gating end of the sampling circuit is connected with a gating pin of the processing unit.

3. The plug detection circuit of claim 1, wherein the functions of the sensor include, but are not limited to: plug detection, temperature detection and switch detection.

4. The plug detection circuit of claim 2, wherein the sampling circuit comprises: a multipath analog signal multiplexer and a sampling unit; the input pins of the multipath analog signal multiplexer are a plurality of input ends of the sampling circuit and are respectively connected with the first connecting terminals of a plurality of plugging positions; the output pin of the multipath analog signal multiplexer is an output end of the sampling circuit and is also connected with a first preset power supply through the sampling unit; and the gating pin of the multipath analog signal multiplexer is the gating end of the sampling circuit.

5. The plug detection circuit of claim 4, wherein the sampling circuit further comprises: a clamp protection unit, the clamp protection unit comprising: the anode of the first clamping diode is a first end of the clamping protection unit and is used for grounding, and the cathode of the first clamping diode is a second end of the clamping protection unit and is used for connecting with an output pin of the multiplexer;

The cathode of the first clamping diode is also connected with the anode of the second clamping diode, and the cathode of the second clamping diode is a third end of the clamping protection unit and is used for being connected with a second preset power supply.

6. The plug detection circuit of claim 2, wherein the plug detection circuit further comprises: the hardware address unit is respectively connected with the second connecting terminals of the plugging positions, and the second connecting terminal of each plugging position is used for connecting the address pins of the memory chip in the circuit breaking module;

The data input pin of the processing unit is connected with the third connecting terminal of the plugging position, and the third connecting terminal of each plugging position is used for connecting the data pin of the memory chip in the circuit breaking module;

The clock output pin of the processing unit is connected with the fourth connecting terminal of the plugging position, and the fourth connecting terminal of each plugging position is used for connecting the clock input pin of the memory chip in the circuit breaking module.

7. The plug-in detection circuit according to claim 6, wherein the input-output pins of the processing unit are connected to fifth connection terminals of the plug-in locations, the fifth connection terminals of each plug-in location being for connection to protection pins of a memory chip in the one circuit breaking module.

8. The plug detection circuit of claim 6, wherein the hardware address unit comprises: the circuit comprises a pull-up resistor, a pull-down resistor and a capacitor, wherein one end of the pull-down resistor is grounded, the other end of the pull-down resistor is connected with a sixth connecting terminal of a first plug-in position in the plug-in position, and the sixth connecting terminal of the first plug-in position is used for connecting a low-level pin in address pins of a memory chip in a corresponding circuit breaking module;

One end of the pull-up resistor is connected with a third preset power supply, the other end of the pull-up resistor is grounded through the capacitor, the other end of the pull-up resistor is also connected with a seventh connecting terminal of a second plugging position in the plugging position, and the seventh connecting terminal of the second plugging position is used for connecting a high-level pin in address pins of a memory chip in a corresponding circuit breaking module.

9. The plug detection circuit of claim 1, wherein the plug detection circuit further comprises: a resistor; one end of the resistor is respectively connected with a fourth preset power supply, the other end of the resistor is respectively connected with an eighth connecting terminal at the plugging position, the eighth connecting terminal at the plugging position is used for being connected with a positive connecting terminal of the circuit breaking module, and the other end of the resistor is respectively connected with a second analog-digital sampling pin of the processing unit.

10. A base, characterized in that, be provided with on the base: sampling circuit and processing unit in a plug detection circuit according to any of the preceding claims 1-9, and a plug position;

The plug detection circuit is connected with the connecting terminal at the plug position, and when the plug position is plugged with the circuit breaking module, a sensor in the circuit breaking module is connected with the sampling circuit.