A power consumption detection device for encrypting data

Abstract

The application relates to a power consumption detection device for encrypting data, which comprises: the output end of a current input loop is electrically connected with the first input end of an alternating current signal acquisition circuit, and the output end of a voltage input loop is electrically connected with the second input end of the alternating current signal acquisition circuit; the output end of the alternating current signal acquisition circuit is electrically connected with the input end of a processor circuit, and the processor circuit is used for carrying out digital sampling on current digital signals and voltage digital signals and judging power consumption abnormity; the processor circuit is also electrically connected with a near and remote communication module and is used for acquiring the data of external alternating current equipment; and the processor circuit is also electrically connected with an ESAM encryption circuit. On one hand, the near and remote communication module is used for simultaneously realizing near-range and remote power consumption data sampling; on the other hand, when power consumption abnormity is judged, the input and output data are subjected to encryption and decryption treatment through the ESAM encryption circuit, so that the data security is improved.

Description

Technical Field

[0001] This application relates to the field of power distribution, and in particular to a power consumption detection device that encrypts data. Background Technology

[0002] In order to monitor the operating conditions of low-voltage power distribution lines, power supply companies install power monitoring devices at the branch points of the lines and in front of the meters of power users to collect data such as voltage, current, power, frequency, and electrical energy of the lines, and transmit the data to the system master station to achieve remote monitoring.

[0003] To compare the data from the user's meter with the data collected by the electricity monitoring device itself and screen for abnormal electricity consumption, a communication connection between the electricity monitoring device and the meter is also required. If both are installed in the same cabinet, a wired connection can be used; if the distance between them is too far, a wireless connection is required.

[0004] To ensure data security, data encryption is required during both the data acquisition and remote transmission processes. Existing power monitoring devices cannot collect data from external AC sampling equipment and encrypt the communication process. Utility Model Content

[0005] This application provides an electricity detection device that encrypts data to address the problem of low data security in related technologies.

[0006] In a first aspect, embodiments of this application provide an electricity consumption detection device for encrypting data, comprising:

[0007] Current input circuit, voltage input circuit, AC signal acquisition circuit, and processor circuit;

[0008] The output terminal of the current input circuit is electrically connected to the first input terminal of the AC signal acquisition circuit, and the output terminal of the voltage input circuit is electrically connected to the second input terminal of the AC signal acquisition circuit.

[0009] In the AC signal acquisition circuit, the current signal generated by the current input circuit and the voltage signal generated by the voltage input circuit are acquired to generate digital current signals and digital voltage signals.

[0010] The output terminal of the AC signal acquisition circuit is electrically connected to the input terminal of the processor circuit, and performs digital sampling on the current digital signal and the voltage digital signal, as well as power consumption anomaly judgment.

[0011] The processor circuit is also electrically connected to a near-long-range communication module for acquiring data from external communication devices, and the processor circuit is also electrically connected to an ESAM encryption circuit.

[0012] Optionally, the near-long-range communication module includes:

[0013] The system includes a Bluetooth communication module, an RS485 communication module, and a 4G communication module for short-range communication, wherein the 4G communication module is also electrically connected to a 4G power supply module.

[0014] Optional, including:

[0015] The processor circuit is also electrically connected to the data memory via an SPI interface for transmitting the acquired sampled data to the data memory for storage.

[0016] Optionally, the data storage device includes a first data storage device for storing a large amount of data and a second data storage device for storing a small amount of data.

[0017] Optionally, the ESAM encryption circuit is used to encrypt and decrypt the data input and output by the processor circuit.

[0018] Optionally, the processing circuit is also electrically connected to the magnetic field detection circuit.

[0019] Optionally, the processor circuit is also electrically connected to a clock circuit.

[0020] Optionally, the remote communication module includes:

[0021] The processor circuit is also electrically connected to the reset circuit via an I2C interface.

[0022] Optionally, the AC signal acquisition circuit includes a V9203 chip.

[0023] Optionally, it may also include a main circuit power supply that supplies power to each loop and each circuit.

[0024] The power consumption detection device that encrypts data provided in this application embodiment has at least the following technical effects.

[0025] On the one hand, it can simultaneously sample power consumption data at both near and far distances through a near-long-distance communication module. On the other hand, when judging power consumption anomalies, it uses an ESAM encryption circuit to encrypt and decrypt the input and output data to improve data security.

[0026] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a simplified module diagram of an electricity detection device for encrypting data according to an embodiment of this application;

[0029] Figure 2 This is a complete module schematic diagram of an electricity detection device that encrypts data according to an embodiment of this application. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0031] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0032] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0033] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," and "third" used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0034] This application provides an embodiment of an electricity consumption detection device that encrypts data, such as... Figure 1 As shown, it includes four main modules: current input circuit, voltage input circuit, AC signal acquisition circuit, and processor circuit.

[0035] The output terminal of the current input circuit is electrically connected to the first input terminal of the AC signal acquisition circuit, and the output terminal of the voltage input circuit is electrically connected to the second input terminal of the AC signal acquisition circuit.

[0036] In the AC signal acquisition circuit, the current signal generated by the current input circuit and the voltage signal generated by the voltage input circuit are acquired to generate digital current signals and digital voltage signals.

[0037] The output terminal of the AC signal acquisition circuit is electrically connected to the input terminal of the processor circuit, and performs digital sampling on the current digital signal and the voltage digital signal, as well as power consumption anomaly judgment.

[0038] The processor circuit is also electrically connected to a near-long-range communication module for acquiring data from external communication devices, and the processor circuit is also electrically connected to an ESAM encryption circuit.

[0039] In implementation, from the perspective of signal transmission, the current input circuit generates current signals Ia / Ib / Ic, which are then transmitted to the AC signal acquisition circuit; the voltage input circuit generates voltage signals Ua / Ub / Uc, which are also transmitted to the AC signal acquisition circuit. The AC signal acquisition circuit performs analog-to-digital conversion on the input current signals Ia / Ib / Ic and voltage signals Ua / Ub / Uc to obtain digital signals, which are then transmitted to the processor circuit for power anomaly analysis. The ESAM encryption circuit, electrically connected to the processor circuit, is responsible for encrypting and decrypting the data input and output by the processor.

[0040] The AC signal acquisition circuit uses the V9203 chip as its core. The V9203 chip's main functions are analog-to-digital conversion and calculations of power, frequency, and energy. It then sends the digital signal to the processor circuit via the SPI interface. The V9203 chip parameters are as follows:

[0041] 1. Operating power supply and voltage: It adopts a single 3.3V power supply input, the operating voltage range is 2.6V~3.6V, and the reference voltage is 1.185V (10ppm / ℃).

[0042] 2. Operating and storage temperature: Operating temperature is -40℃ to +85℃, and storage temperature is -55℃ to +150℃.

[0043] 3. Measurement accuracy: Within a dynamic range of 10000:1, the measurement error of full-wave / fundamental active quantities is less than 0.1%; within a dynamic range of 5000:1, the measurement error of full-wave / fundamental reactive quantities is less than 0.1%.

[0044] 4. Measurement data: It can provide 7 channels of raw waveforms (22-bit) of voltage / current signals, DMA mode output, and update frequency of 6.4KHz; it can also measure the effective values ​​of combined phase and phase full wave / fundamental wave voltage / current, active / reactive / apparent power / energy, effective value of neutral current, frequency / phase / power factor, etc.

[0045] 5. Operating modes: In addition to the normal operating mode, it also supports the power outage full voltage loss pre-judgment mode (typical operating current 1.65mA, response time less than 20ms), current RMS measurement mode (typical operating current 5.1mA, response time less than 135ms), and deep sleep mode (typical operating current 0.2μA).

[0046] 6. Calibration function: Supports segmented angle difference correction (five segments, adjustment range ±2.8°), segmented ratio difference correction of full-wave active power (three segments) and secondary compensation, ratio difference correction and secondary compensation of full-wave / fundamental-wave reactive power and fundamental-wave active power, as well as automatic verification of configuration parameters.

[0047] 7. Input Mode: Supports CT and di / dt current input modes, suitable for three-phase three-wire / three-phase four-wire applications.

[0048] 8. Other functions: Supports programmable start / creep judgment and SPI interface.

[0049] 9. Package type: 44-pin LQFP package.

[0050] like Figure 2 As shown, the power consumption detection device for encrypting data provided in this embodiment also includes the following modules:

[0051] To ensure that the processor can perform power consumption anomaly analysis normally, a series of peripheral circuits also need to be set up for the processor circuit, including near- and long-range communication modules and data storage.

[0052] The near-long-range communication module includes a Bluetooth communication module and an RS485 communication module for near-range communication, and a 4G communication module for long-range communication. The 4G communication module is also electrically connected to a 4G power module. Due to their inherent technological limitations, the Bluetooth and RS485 communication modules are used for data transmission with other devices at close range, while the 4G communication module is used for data transmission with other devices at long range.

[0053] It is important to note that data collected from external data acquisition equipment is transmitted via RS485 and Bluetooth communication modules. The communication data is first sent to the ESAM encryption circuit, which encrypts the data. The processor then reads the encrypted data and sends it back to the RS485 and Bluetooth communication modules. Long-distance data transmission uses a 4G communication module, where the encryption and decryption process also uses the ESAM encryption module, following the same procedure as with RS485 and Bluetooth communication. Communication data responded to by the external data acquisition equipment is received by the processor and sent to the ESAM encryption circuit for decryption. The processor then reads the decrypted data for further processing. Whether for short-range or long-range communication, data input and output must be encrypted and decrypted using the ESAM encryption circuit to ensure that data is not leaked during transmission.

[0054] Optionally, the processor circuitry is also electrically connected to the data memory via an SPI interface for transmitting the acquired sampled data to the data memory for storage. The data memory includes a first data memory for storing large amounts of data and a second data memory for storing small amounts of data.

[0055] In implementation, the processor processes data from external data acquisition equipment to complete various business functions, stores necessary data, with a large amount of data stored in the first data storage and a small amount of data stored in the second data storage.

[0056] Optionally, the processing circuit is also electrically connected to the magnetic field detection circuit.

[0057] In practice, the magnetic field detection circuit can detect the magnetic field strength of the space where the device is installed. The magnetic field detection circuit outputs a voltage proportional to the magnetic field strength. The analog-to-digital converter inside the processor converts this voltage into a digital quantity and converts it into a magnetic field strength value. When the magnetic field strength exceeds the set threshold, an alarm event will be generated and can be sent to the main station system via 4G communication.

[0058] Optionally, the processor circuitry is also electrically connected to the clock circuitry.

[0059] In implementation, the clock circuit generates and automatically updates real-time time data (year, month, day). This time data is used for time stamping various acquired data and events. The clock circuit has a backup battery to maintain clock updates during device power outages.

[0060] Optionally, the processor circuitry is also electrically connected to the reset circuitry via an I2C interface.

[0061] In practice, the reset circuit is used to ensure that the processor works stably when powered on and off, and to avoid system crashes caused by power supply voltage fluctuations.

[0062] Optionally, it may also include a main circuit power supply that supplies power to each loop and each circuit.

[0063] In practice, the main circuit power supply powers all circuits.

[0064] This device can perform AC sampling and read data from external AC sampling devices. It can also encrypt the acquisition process and data transmission communication, and has a magnetic field detection function to detect external interference that may affect the normal operation of the device.

[0065] 1) Line operating condition data can be collected either through its own AC sampling circuit or by reading data from external AC sampling devices. Abnormal power consumption can be detected by comparing the data collected internally with the data read from external AC sampling devices.

[0066] 2) It has a magnetic field detection circuit to detect external interfering magnetic fields that may affect the normal operation of the device.

[0067] 3) Data acquisition is performed simultaneously via both wireless (Bluetooth) and wired (RS458) interfaces.

[0068] 4) Communication data during the data acquisition process is encrypted and decrypted using RSAM.

[0069] It should be noted that the power consumption detection device for encrypting data provided in this embodiment is used to implement the above-described embodiments, and details already described will not be repeated. As used above, terms such as "module," "unit," and "subunit" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the above embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A power consumption detection device for encrypting data, characterized in that, include: Current input circuit, voltage input circuit, AC signal acquisition circuit, and processor circuit; The output terminal of the current input circuit is electrically connected to the first input terminal of the AC signal acquisition circuit, and the output terminal of the voltage input circuit is electrically connected to the second input terminal of the AC signal acquisition circuit. In the AC signal acquisition circuit, the current signal generated by the current input circuit and the voltage signal generated by the voltage input circuit are acquired to generate digital current signals and digital voltage signals. The output terminal of the AC signal acquisition circuit is electrically connected to the input terminal of the processor circuit, and performs digital sampling on the current digital signal and the voltage digital signal, as well as power consumption anomaly judgment. The processor circuit is also electrically connected to a near-long-range communication module for acquiring data from external communication devices, and the processor circuit is also electrically connected to an ESAM encryption circuit.

2. The power consumption detection device for encrypting data according to claim 1, characterized in that, The near-long-range communication module includes: The system includes a Bluetooth communication module, an RS485 communication module, and a 4G communication module for short-range communication, wherein the 4G communication module is also electrically connected to a 4G power supply module.

3. The power consumption detection device for encrypting data according to claim 1, characterized in that, include: The processor circuit is also electrically connected to the data memory via an SPI interface for transmitting the acquired sampled data to the data memory for storage.

4. The power consumption detection device for encrypting data according to claim 3, characterized in that, The data storage device includes a first data storage device for storing a large amount of data and a second data storage device for storing a small amount of data.

5. The power consumption detection device for encrypting data according to claim 1, characterized in that, The ESAM encryption circuit is used to encrypt and decrypt the data input and output by the processor circuit.

6. The power consumption detection device for encrypting data according to claim 1, characterized in that, include: The processor circuit is also electrically connected to the magnetic field detection circuit.

7. The power consumption detection device for encrypting data according to claim 1, characterized in that, include: The processor circuit is also electrically connected to the clock circuit.

8. The power consumption detection device for encrypting data according to claim 1, characterized in that, The remote communication module includes: The processor circuit is also electrically connected to the reset circuit via an I2C interface.

9. The power consumption detection device for encrypting data according to claim 1, characterized in that, The AC signal acquisition circuit includes a V9203 chip.

10. The power consumption detection device for encrypting data according to any one of claims 1 to 9, characterized in that, It also includes the main circuit power supply that supplies power to each loop and circuit.

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