Multi-load disconnection detection method and device based on electric energy chip

Abstract

The invention discloses a multi-load disconnection detection method and device based on an electric energy chip, and the method comprises the steps: obtaining a current electrical parameter of equipment under the control of a detection instruction for disconnection detection, so as to obtain a first parameter; determining a load needing disconnection detection according to the detection instruction and setting the load as a target load; starting the target load and acquiring an electrical parameter of the equipment after the target load is started so as to obtain a second parameter; and determining whether the target load is disconnected according to the first parameter and the second parameter. According to the invention, disconnection detection can be carried out on the load, the number of zero-crossing circuits can be reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of disconnection detection, and in particular to a multi-load disconnection detection method and device based on an electric energy chip. Background Art

[0002] Electrical equipment is usually equipped with a disconnection detection circuit to detect disconnections of loads to ensure the safety of the equipment. Generally, an electrical device may include multiple loads. For example, for a certain electrical device, it may include loads such as a fan, multiple heating plates, and a cigarette lighter. In this case, when the electrical device performs disconnection detection, it is necessary to perform disconnection detection on each load. However, the current disconnection detection circuit usually requires the setting of a zero-crossing circuit for detection, and one load corresponds to one zero-crossing circuit. The zero-crossing circuit will still generate power consumption when the electrical device is in standby mode. When there are multiple zero-crossing circuits, the standby power consumption of the electrical device will be higher. Summary of the invention

[0003] The embodiment of the present invention provides a multi-load disconnection detection method and device based on an electric energy chip, aiming to solve the problem of high standby power consumption of current electrical equipment.

[0004] In a first aspect, an embodiment of the present invention provides a multi-load disconnection detection method based on an electric energy chip, the method comprising:

[0005] Under the control of the detection instruction for performing disconnection detection, the current electrical parameters of the device are obtained to obtain the first parameter;

[0006] According to the detection instruction, a load that needs to be detected for disconnection is confirmed and set as a target load;

[0007] Starting the target load and acquiring electrical parameters of the device after the target load is started to obtain a second parameter;

[0008] It is determined whether the target load is disconnected according to the first parameter and the second parameter.

[0009] In a second aspect, an embodiment of the present invention further provides a multi-load disconnection detection device based on an electric energy chip, the device comprising:

[0010] A first acquisition unit, configured to acquire current electrical parameters of the device to obtain a first parameter under the control of a detection instruction for performing disconnection detection;

[0011] A first setting unit, configured to confirm a load that needs to be detected for disconnection according to the detection instruction and set it as a target load;

[0012] A second acquisition unit, configured to start the target load and acquire electrical parameters of the device after the target load is started to obtain a second parameter;

[0013] The first confirmation unit is used to confirm whether the target load is disconnected according to the first parameter and the second parameter.

[0014] The embodiment of the present invention provides a multi-load disconnection detection method and device based on an electric energy chip. The method includes: being controlled by a detection instruction for disconnection detection, obtaining the current electrical parameters of the device to obtain a first parameter; confirming the load that needs to be detected for disconnection according to the detection instruction and setting it as a target load; starting the target load and obtaining the electrical parameters of the device after the target load is started to obtain a second parameter; and confirming whether the target load has a disconnection according to the first parameter and the second parameter. The embodiment of the present invention can obtain the current electrical parameters of the device to obtain the first parameter when performing disconnection detection, and after confirming the target load, obtain the second parameter of the device after starting the target load, and confirm whether the target load has a disconnection according to the first parameter and the second parameter, without relying on the zero-crossing signal of the zero-crossing circuit, which can reduce the number of zero-crossing circuits of the device and reduce standby power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0016] Figure 1 It is a flow chart of a multi-load disconnection detection method based on an electric energy chip provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of a first sub-process of a multi-load disconnection detection method based on an electric energy chip provided in an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of a second sub-process of the multi-load disconnection detection method based on the electric energy chip provided in an embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of a third sub-process of a multi-load disconnection detection method based on an electric energy chip provided in an embodiment of the present invention;

[0020] Figure 5 4 is a schematic diagram of a fourth sub-process of a multi-load disconnection detection method based on an electric energy chip provided in an embodiment of the present invention;

[0021] Figure 6 is a schematic diagram of a fifth sub-process of a multi-load disconnection detection method based on an electric energy chip provided in an embodiment of the present invention;

[0022] Figure 7 It is a schematic block diagram of a multi-load disconnection detection device based on an electric energy chip provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components and / or groups thereof.

[0025] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular forms of "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0026] See also Figure 1 , Figure 1 1 is a flow chart of a method for detecting multiple load disconnection based on an electric energy chip according to an embodiment of the present invention. The method for detecting multiple load disconnection based on an electric energy chip according to an embodiment of the present invention can be applied to electrical equipment to detect disconnection of loads of the electrical equipment. Figure 1 As shown, the method includes steps S100 to S130.

[0027] S100, under the control of a detection instruction for performing disconnection detection, obtaining current electrical parameters of the device to obtain a first parameter.

[0028] In an embodiment of the present invention, the electrical device may be provided with an electric energy chip, and the electric energy chip is configured with the multi-load disconnection detection method based on the electric energy chip provided by the present invention. When the electrical device is running, the electric energy chip may perform disconnection detection according to the detection instruction. The detection instruction may be triggered by the user through a test button, or a relevant algorithm may be configured in the electric energy chip, and the electric energy chip performs disconnection detection according to the configured algorithm, for example, the disconnection detection may be performed periodically.

[0029] The detection instruction includes the loads that need to be detected for disconnection. Generally, electrical equipment may include multiple loads, for example, a fan, a heating plate, and a cigarette lighter. In a detection instruction, any one of the three loads of the fan, the heating plate, and the cigarette lighter is usually included. That is, when all loads are detected for disconnection, each load is detected for disconnection in turn.

[0030] When the detection instruction is received, the current electrical parameters of the electrical device are obtained, and the electrical parameters may be one or more of power, voltage, current and resistance. The obtained electrical parameters are parameters corresponding to the current state of the electrical device when the detection instruction is received.

[0031] S110, confirming a load that needs to be detected for disconnection according to the detection instruction and setting it as a target load.

[0032] In an embodiment of the present invention, the detection instruction includes a load that needs to be detected for line breakage, and the load included in the detection instruction can be set as a target load. For example, an electrical device may include three loads: a fan, a heating plate, and a cigarette lighter. If the detection instruction includes a fan, the fan is set as the target load. In addition, the detection instruction may include multiple loads at one time. For example, it may include three loads: a fan, a heating plate, and a cigarette lighter. Then, one of the loads among the fan, the heating plate, and the cigarette lighter can be set as the target load first. After the line breakage detection is completed, the next load can be set as the target load until the line breakage detection of all loads included in the detection instruction is completed.

[0033] S120, starting the target load and acquiring electrical parameters of the device after the target load is started to obtain a second parameter.

[0034] In the embodiment of the present invention, after the target load is confirmed, the target load is controlled to start, and after the target load is started, the electrical parameters corresponding to the electrical equipment after the target load is started are obtained, thereby obtaining the second parameter. The second parameter is of the same type as the first parameter, except that the specific values ​​of the two parameters are different. For example, if the first parameter includes voltage and power, the second parameter also includes voltage and power.

[0035] S130: Determine whether the target load is disconnected according to the first parameter and the second parameter.

[0036] In an embodiment of the present invention, the first parameter is a parameter of the electrical equipment before the target load is started, and the second parameter is a parameter of the electrical equipment after the target load is started. After obtaining the first parameter and the second parameter, it is confirmed whether the target load has a broken line based on the numerical difference between the first parameter and the second parameter. For example, it is possible to confirm whether the target load has a broken line based on whether the difference between the first parameter and the second parameter is within a preset interval.

[0037] See also Figure 2 In some embodiments, such as the present embodiment, the first parameter includes a first voltage and a first power, the second parameter includes a second voltage and a second power, and the step S130 further includes steps S131-S132.

[0038] S131, substituting the first voltage, the first power, and the second voltage into a first preset formula for calculation to obtain a standard power;

[0039] S132: Determine whether the target load is disconnected according to the second power and the standard power.

[0040] In the embodiment of the present invention, the first parameter includes the first voltage and the first power, the second parameter includes the second voltage and the second power, the first voltage is U1, the first power is P1, the second voltage is U2, the second power is P2, the standard power is P3, then according to the formula P3 = U2 2 *P1 / U1 2 The standard power is calculated, and whether the target load is disconnected is confirmed based on the standard power and the second power.

[0041] See also Figure 3 In some embodiments, such as the present embodiment, step S132 also includes steps S1321-S1322.

[0042] S1321, calculating a difference between the second power and the standard power to obtain a first difference;

[0043] S1322: If the first difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold, the target load is not disconnected.

[0044] In an embodiment of the present invention, the absolute value of the difference between the second power and the standard power can be calculated to obtain the first difference, and the first preset threshold and the second preset threshold can be obtained. By judging whether the first difference is between the first preset threshold and the second preset threshold, it is confirmed whether the target load is disconnected.

[0045] The threshold of the electrical device can be obtained by giving the input power supply. For example, under the rated working voltage, the electrical device is controlled to turn on only the first load, and then the input voltage and power of the electrical device in this state are obtained, and the corresponding relationship between the input voltage and power is recorded, and then the first load is turned off, and the second load is turned on, and then the input voltage and power of the electrical device in this state are obtained, and the corresponding relationship between the input voltage and power is recorded until the recording of each load is completed. The corresponding relationship between the input voltage and power of all the recorded loads is saved as a corresponding table, and then the corresponding table is stored in the power chip.

[0046] In actual use, the power corresponding to the second voltage of the electrical equipment after turning on the target load is Px in the corresponding table. The first preset threshold and the second preset threshold can be obtained by floating up and down. For example, it can float up and down by 2%, then the first preset threshold is 0.98Px, and the second preset threshold is 1.02Px. If the first difference is greater than or equal to 0.98Px and less than or equal to 1.02Px, it indicates that the target load is not disconnected.

[0047] See also Figure 4 In some embodiments, such as the present embodiment, step S132 also includes steps S1323-S1325.

[0048] S1323: If the first difference is less than the first preset threshold or greater than the second preset threshold, shut down other loads except the target load;

[0049] S1324, acquiring electrical parameters of the device after turning off other loads except the target load to obtain a third parameter, wherein the third parameter includes a third voltage and a third power;

[0050] S1325: If the third power is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold, the target load is not disconnected.

[0051] In the embodiment of the present invention, taking the aforementioned first preset threshold value of 0.98Px and the second preset threshold value of 1.02Px as an example, if the first difference is less than 0.98Px or greater than 1.02Px, it is necessary to further determine whether the target load is disconnected. Specifically, other loads except the target load may be turned off. For example, if the loads of the electrical device currently in the on state include a fan, a heating plate and a cigarette lighter, and the fan is the target load, the heating plate and the cigarette lighter may be turned off, leaving only the fan in the on state, and then the third parameter of the electrical device in the current state is obtained, and the third parameter also includes a third voltage and a third power.

[0052] The principles of the third preset threshold and the fourth preset threshold are the same as those of the first preset threshold and the second preset threshold. The power Py corresponding to the third voltage is obtained through the corresponding table, and the third preset threshold and the fourth preset threshold are obtained by floating up and down by a certain percentage. For example, the third preset threshold is 0.98Py and the fourth preset threshold is 1.02Py. When the third power is greater than or equal to 0.98Py and less than or equal to 1.02Py, the target load is not disconnected.

[0053] See also Figure 5 In some embodiments, such as the present embodiment, in some embodiments, such as the present embodiment, the step S132 also includes step S1326.

[0054] S1326: If the third power is less than the third preset threshold or greater than the fourth preset threshold, the target load is disconnected.

[0055] In the embodiment of the present invention, taking the third preset threshold being 0.98Py and the fourth preset threshold being 1.02Py as an example, when the third power is less than 0.98Py or greater than 1.02Py, the target load is in an off-line state.

[0056] See also Figure 6 In some embodiments, such as the present embodiment, in some embodiments, such as the present embodiment, step S132 also includes step S1327.

[0057] S1327, outputting an error message indicating that the target load is disconnected.

[0058] In the embodiment of the present invention, when the target load is in an offline state, an error message is output to remind the user that a load is in an offline state.

[0059] Figure 7 is a schematic block diagram of a multi-load disconnection detection device 200 based on an electric energy chip provided by an embodiment of the present invention. Figure 7 As shown, corresponding to the above multi-load disconnection detection method based on the power chip, the present invention also provides a multi-load disconnection detection device 200 based on the power chip. The multi-load disconnection detection device 200 based on the power chip includes a unit for executing the above multi-load disconnection detection method based on the power chip. Figure 7 The multi-load disconnection detection device 200 based on the power chip includes a first acquisition unit 201 , a first setting unit 202 , a second acquisition unit 203 and a first confirmation unit 204 .

[0060] The first acquisition unit 201 is used to be controlled by a detection instruction for performing disconnection detection, and acquire the current electrical parameters of the device to obtain the first parameters;

[0061] The first setting unit 202 is used to confirm the load that needs to be broken according to the detection instruction and set it as the target load;

[0062] The second acquisition unit 203 is used to start the target load and acquire the electrical parameters of the device after the target load is started to obtain a second parameter;

[0063] The first confirmation unit 204 is used to confirm whether the target load is disconnected according to the first parameter and the second parameter.

[0064] In some embodiments, such as this embodiment, the first confirmation unit 204 further includes a first calculation unit and a second confirmation unit.

[0065] The first calculation unit is used to substitute the first voltage, the first power and the second voltage into a first preset formula to calculate and obtain the standard power;

[0066] A second confirmation unit is configured to confirm whether the target load is disconnected according to the second power and the standard power.

[0067] In some embodiments, such as this embodiment, the second confirmation unit also includes a second calculation unit and a third confirmation unit.

[0068] The second calculation unit is used to calculate the difference between the second power and the standard power to obtain a first difference;

[0069] The third confirmation unit is used for confirming that the target load is not disconnected if the first difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold.

[0070] In some embodiments, such as this embodiment, the second confirmation unit further includes a first execution unit, a third acquisition unit, and a fourth confirmation unit.

[0071] The first execution unit is configured to shut down other loads except the target load if the first difference is less than the first preset threshold or greater than the second preset threshold;

[0072] The third acquisition unit is used to acquire electrical parameters of the device after turning off other loads except the target load to obtain a third parameter, wherein the third parameter includes a third voltage and a third power;

[0073] The fourth confirmation unit is used to confirm that the target load is not disconnected if the third power is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold.

[0074] In some embodiments, such as this embodiment, the second confirmation unit also includes a fifth confirmation unit.

[0075] The fifth confirmation unit is used to determine that the target load is disconnected if the third power is less than the third preset threshold or greater than the fourth preset threshold.

[0076] In some embodiments, such as this embodiment, the second confirmation unit also includes an output unit.

[0077] The output unit is used to output error information indicating that the target load is disconnected.

[0078] It should be noted that technicians in the relevant field can clearly understand that the specific implementation process of the above-mentioned multi-load disconnection detection device based on the power chip and each unit can refer to the corresponding description in the aforementioned method embodiment, and for the convenience and conciseness of the description, it will not be repeated here.

[0079] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0081] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A multi-load disconnection detection method based on an electric energy chip, characterized in that: The method comprises: Under the control of the detection instruction for performing disconnection detection, the current electrical parameters of the device are obtained to obtain the first parameter; According to the detection instruction, a load that needs to be detected for disconnection is confirmed and set as a target load; Starting the target load and acquiring electrical parameters of the device after the target load is started to obtain a second parameter; It is determined whether the target load is disconnected according to the first parameter and the second parameter.

2. The method according to claim 1, characterized in that The first parameter includes a first voltage and a first power, the second parameter includes a second voltage and a second power, and the step of confirming whether the target load is disconnected according to the first parameter and the second parameter includes: Substituting the first voltage, the first power and the second voltage into a first preset formula for calculation to obtain a standard power; It is determined whether the target load is disconnected according to the second power and the standard power.

3. The method according to claim 2, characterized in that The first preset formula is: P3=U2 2 *P1 / U1 2 Among them, U1 is the first voltage, P1 is the first power, U2 is the second voltage, and P3 is the standard power.

4. The method according to claim 2, characterized in that The step of confirming whether the target load is disconnected according to the second power and the standard power includes: calculating a difference between the second power and the standard power to obtain a first difference; If the first difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold, the target load is not disconnected.

5. The method according to claim 4, characterized in that After the step of calculating the difference between the second power and the standard power to obtain the first difference, the method further includes: If the first difference is less than the first preset threshold or greater than the second preset threshold, shutting down other loads except the target load; Acquire electrical parameters of the device after turning off other loads except the target load to obtain a third parameter, wherein the third parameter includes a third voltage and a third power; If the third power is greater than or equal to the third preset threshold and less than or equal to the fourth preset threshold, the target load is not disconnected.

6. The method according to claim 5, characterized in that After the step of obtaining the electrical parameters of the device after turning off other loads except the target load to obtain the third parameter, the method further includes: If the third power is less than the third preset threshold or greater than the fourth preset threshold, the target load is disconnected.

7. The method according to claim 6, characterized in that After the step of determining that the target load is disconnected if the third power is less than the third preset threshold or greater than the fourth preset threshold, the method further includes: Output an error message indicating that the target load is disconnected.

8. A multi-load disconnection detection device based on an electric energy chip, characterized in that: The device comprises: A first acquisition unit, configured to acquire current electrical parameters of the device to obtain a first parameter under the control of a detection instruction for performing disconnection detection; A first setting unit, configured to confirm a load that needs to be detected for disconnection according to the detection instruction and set it as a target load; A second acquisition unit, configured to start the target load and acquire electrical parameters of the device after the target load is started to obtain a second parameter; The first confirmation unit is used to confirm whether the target load is disconnected according to the first parameter and the second parameter.

9. The multi-load disconnection detection device based on the power chip as claimed in claim 8, characterized in that: The first parameter includes a first voltage and a first power, the second parameter includes a second voltage and a second power, and the first confirmation unit includes: A first calculation unit, configured to substitute the first voltage, the first power, and the second voltage into a first preset formula to calculate and obtain a standard power; A second confirmation unit is configured to confirm whether the target load is disconnected according to the second power and the standard power.

10. The multi-load disconnection detection device based on the power chip according to claim 9, characterized in that: The second confirmation unit includes: A second calculation unit, configured to calculate a difference between the second power and the standard power to obtain a first difference; The third confirmation unit is used to confirm that the target load is not disconnected if the first difference is greater than or equal to a first preset threshold and less than or equal to a second preset threshold.

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