Outdoor equipment box current detection device

Abstract

The utility model discloses a current detection device for an outdoor equipment box, which comprises a mains supply input, a switch unit, a current detection control mainboard and an online terminal, and is characterized in that the switch unit is electrically connected with the current detection control mainboard; the current detection control main board comprises an electric quantity metering chip, an MCU, a communication module, an output control module, a storage module and a commercial power output module, the electric quantity metering chip is electrically connected with the commercial power output module, the electric quantity metering chip is communicated with the MCU through a serial port, and the MCU is electrically connected with the output control module. The current detection device for the outdoor equipment box is additionally provided with the electric quantity metering chip, realizes independent detection of each path of current for the current output interface, realizes independent control, detects the use condition of the total current of the equipment box in real time, detects the use condition of each path of equipment of the equipment box in real time, and is simple to operate and convenient to use. And a user only needs to click and inquire on a platform matched with the equipment box.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor equipment box current detection, in particular to an outdoor equipment box current detection device. Background Art

[0002] As video surveillance equipment is applied to every corner of social life, along with the development of the times, outdoor equipment boxes are also widely used in various fields. However, many equipment boxes consume a lot of electricity when they are powered, and are easily stolen without knowing it. Therefore, the demand for equipment boxes that can monitor current in real time is also increasing. Traditional outdoor equipment box current detection devices have the following problems in actual applications:

[0003] In the past, outdoor equipment boxes only focused on function realization and could only control power supply. However, once there was a problem with the power supply, it was often necessary to manually detect it by on-site personnel to find out where the problem occurred. Moreover, if the power supply of the equipment box was used elsewhere, it could not be detected in time, after all, it did not affect the existing functional use. This has long cost a lot of manpower costs. Once a problem occurs, it also takes a lot of time to troubleshoot the problem, which will undoubtedly increase the workload considerably. Utility Model Content

[0004] The utility model aims to provide a current detection device for an outdoor equipment box, so as to solve the problems of high detection cost and great difficulty of the existing current detection device for an outdoor equipment box proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a current detection device for an outdoor equipment box, comprising a mains input, a switch unit, a current detection control mainboard and an online terminal, wherein the switch unit is electrically connected to the current detection control mainboard;

[0006] The current detection control mainboard includes an electric quantity metering chip, an MCU, a communication module, an output control module, a storage module and a mains power output module. The electric quantity metering chip is electrically connected to the mains power output module. The electric quantity metering chip communicates with the MCU through a serial port. The MCU is electrically connected to the output control module. The output control module is used to control the output of the mains power. An RMII interface and an RJ45 interface are installed on the communication module. The communication module is connected to the MCU through the RMII interface. The communication module is used to communicate with an online terminal to transmit current data. The communication module is connected to the online terminal through the RJ45 interface.

[0007] Preferably, the AC power input includes an ACDC module, a current transformer and a relay. The ACDC module is used to convert the input AC power into a stable and accurate voltage VCC to power the current detection control mainboard. The current transformer is electrically connected to the relay, and the current transformer is electrically connected to the power metering chip. The current transformer is used to convert the current signal of the AC power into a voltage signal and give it to the power metering chip for identification.

[0008] Preferably, the relay is connected to a normally open contact and is in an output state by default. The relay is electrically connected to an output control module, and the output control module is used to control a multi-way switch.

[0009] Preferably, the ACDC module is electrically connected to a ground wire via a wire.

[0010] Preferably, the switch unit is used to access the mains, and the switch unit is an air switch or a reclosing switch.

[0011] Preferably, the online terminal is used for users to access and control the output of the mains power through the platform website, and to know the current value of each device connected to the equipment box. The online terminal is a PC or a switch.

[0012] Preferably, the electricity metering chip includes a U12 chip, a voltage transformer P1, voltage sampling resistors R46 and R48, current transformers T7 and T8, a current sampling resistor R57 and an isolation resistor R85, wherein the isolation resistor R85 is a digital ground resistor or an analog ground resistor for reducing power connection interference.

[0013] Preferably, the storage module is electrically connected to the MCU, and the storage module is used to store and record the power consumption of the equipment box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The outdoor equipment box current detection device is equipped with an electric quantity metering chip, which can independently detect each current of the current output interface and realize independent control, detect the usage of the total current of the equipment box in real time, and detect the usage of each device of the equipment box in real time. The operation is simple, and you only need to click to query on the platform matching the equipment box.

[0016] This equipment box can not only detect the usage of each current in real time, but also save data and accumulate the current used. Relevant personnel can query the electricity usage of this month on the platform. The collection accuracy of data such as voltage and current is high, which is more than twice the speed and accuracy of manual detection, and further saves time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a system block diagram of the current detection device for the equipment box of the utility model;

[0018] Figure 2 This is a schematic diagram of the current detection main control board of the utility model;

[0019] Figure 3 This is the software flow chart of the current detection main control board of the utility model;

[0020] Figure 4 This is a connection diagram of the power metering chip module of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-4 The utility model provides a current detection device for an outdoor equipment box, including a mains input, a switch unit, a current detection control mainboard and an online terminal, wherein the switch unit is electrically connected to the current detection control mainboard; the switch unit is used to access the mains, and the switch unit is an air switch or a reclosing switch;

[0023] The current detection control mainboard includes an electricity metering chip, an MCU, a communication module, an output control module, a storage module and a mains output module. The electricity metering chip is electrically connected to the mains output module, the electricity metering chip communicates with the MCU through a serial port, the MCU is electrically connected to the output control module, the output control module is used to control the output of the mains, the communication module is installed with an RMII interface and an RJ45 interface, the communication module is connected to the MCU through the RMII interface, the communication module is used to communicate with the online terminal to transmit current data, and the communication module is connected to the online terminal through the RJ45 interface; the storage module is electrically connected to the MCU, and the storage module is used to store and record the power consumption of the equipment box;

[0024] When in use, an electricity metering chip is added to realize independent detection and independent control of each current on the current output interface, and the total current usage of the equipment box is detected in real time.

[0025] See also Figure 1 and Figure 2, further, the mains input includes an ACDC module, a current transformer and a relay. The ACDC module is used to convert the input mains into a stable and accurate voltage VCC to power the current detection control mainboard. The current transformer is electrically connected to the relay, and the current transformer is electrically connected to the power metering chip. The current transformer is used to convert the current signal of the mains into a voltage signal and give it to the power metering chip for identification. The relay is connected to the normally open contact and is in the output state by default. The relay is electrically connected to the output control module, and the output control module is used to control the multi-way switch. The ACDC module is electrically connected to the ground wire through a wire;

[0026] When in use, the AC power input is the power supply for the main control board, which is converted into a stable and accurate voltage VCC by the ACDC module to power the entire board. At the same time, the AC power input module is connected to the current transformer, and the current signal passing through the transformer will become a voltage signal and be given to the power metering chip for identification. The AC power continues to flow from the current transformer to the relay. The relay is connected to the normally open contact and is in the output state by default. The switching state of the relay is controlled by the output control module, and the output control module can control the multi-way switch; once the load is connected to the AC power output end, the power metering chip can collect its corresponding current and transmit the data to the MCU through the serial port. The MCU will upload this data through the communication module. The communication module is connected to the computer or the switch through the RJ45 network port. In this way, the output of the AC power can be accessed and controlled through the platform URL in the computer terminal, and the current value of each device connected to the equipment box can be obtained.

[0027] See also Figure 1 , Figure 2 and Figure 3 ,Furthermore, the online terminal is used for users to access and control the output of the mains through the platform website, and to know the current value of each device connected to the equipment box. The online terminal is a PC or a switch;

[0028] When in use, the outdoor equipment box of this power supply detection device is used for high-precision testing. The operation is simple. The tester only needs to click a button on the computer platform to query. This power supply detection device can also automatically calculate the monthly power usage, which has great advantages in power saving and power usage tracing. The measurement accuracy of data such as voltage and current is improved several times compared with traditional manual testing, and the computer platform saves the collected data, making power statistics very convenient.

[0029] See also Figure 1 and Figure 4, further, the power metering chip includes a U12 chip, a voltage transformer P1, voltage sampling resistors R46 and R48, current transformers T7 and T8, a current sampling resistor R57 and an isolation resistor R85, and the isolation resistor R85 is a digital ground resistor or an analog ground resistor for reducing power connection interference;

[0030] When in use, the power metering chip is U12, which can detect two currents and one voltage. The voltage transformer is P1, and the sampling resistors of the voltage transformer are R46 and R48. Changing their sizes can change the current signal collected by the power metering chip U12; the current transformers are T7 and T8, and the sampling resistor of the current signal is R57. Changing its size can change the detected voltage value, thereby affecting the collection accuracy; the isolation resistor is R85, which can reduce ground interference; the MCU main control chip is U11, which is connected to the power metering chip through the serial port, and the collected current data is uploaded to the platform and saved; and the collection cycle can be set, and customers can set the collection time according to their needs.

[0031] When the embodiment of the present application is in use: after the system is powered on, the system is first initialized, which includes watchdog initialization, clock initialization, SCI1 initialization, SCI2 initialization, SPI initialization, and IIC initialization. The initialization of each communication module must be initialized according to the agreed baud rate. The power collection module needs to be initialized separately before use. After the initialization is completed, the system interrupt is turned on and the main loop of the program is entered. After the circuit is connected to the load, because the relay is in the default on state, the power collection is already turned on. The power metering chip will upload the collected data to the MCU in sequence, and then upload it to the platform via the MCU. The platform will record and save the collected data.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A current detection device for an outdoor equipment box, characterized in that: It includes a mains input, a switch unit, a current detection control mainboard and an online terminal, wherein the switch unit is electrically connected to the current detection control mainboard; The current detection control mainboard includes an electric quantity metering chip, an MCU, a communication module, an output control module, a storage module and a mains power output module. The electric quantity metering chip is electrically connected to the mains power output module. The electric quantity metering chip communicates with the MCU through a serial port. The MCU is electrically connected to the output control module. The output control module is used to control the output of the mains power. An RMII interface and an RJ45 interface are installed on the communication module. The communication module is connected to the MCU through the RMII interface. The communication module is used to communicate with an online terminal to transmit current data. The communication module is connected to the online terminal through the RJ45 interface.

2. The outdoor equipment box current detection device according to claim 1, characterized in that: The AC power input includes an ACDC module, a current transformer and a relay. The ACDC module is used to convert the input AC power into a stable and accurate voltage VCC to power the current detection control mainboard. The current transformer is electrically connected to the relay, and the current transformer is electrically connected to the power metering chip. The current transformer is used to convert the current signal of the AC power into a voltage signal and provide it to the power metering chip for identification.

3. The outdoor equipment box current detection device according to claim 2, characterized in that: The relay is connected to a normally open contact and is in an output state by default. The relay is electrically connected to an output control module, and the output control module is used to control a multi-way switch.

4. The outdoor equipment box current detection device according to claim 2, characterized in that: The ACDC module is electrically connected to the ground wire through a wire.

5. The outdoor equipment box current detection device according to claim 1, characterized in that: The switch unit is used to access the mains, and the switch unit is an air switch or a reclosing switch.

6. The outdoor equipment box current detection device according to claim 1, characterized in that: The online terminal is used for users to access and control the output of the mains power through the platform website, and to know the current value of each device connected to the equipment box. The online terminal is a PC or a switch.

7. The outdoor equipment box current detection device according to claim 1, characterized in that: The electricity metering chip includes a U12 chip, a voltage transformer P1, voltage sampling resistors R46 and R48, current transformers T7 and T8, a current sampling resistor R57 and an isolation resistor R85. The isolation resistor R85 is a digital ground resistor or an analog ground resistor for reducing power connection interference.

8. The outdoor equipment box current detection device according to claim 1, characterized in that: The storage module is electrically connected to the MCU, and is used to store and record the power consumption of the equipment box.

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