Battery charging monitoring device and method of using the same

Abstract

The present invention relates to the field of electrical equipment monitoring, and specifically to a battery charging monitoring device and a method for using the same. A battery charging monitoring device comprises a circuit board (1), and also comprises a voltage conversion module (2), a wireless Bluetooth module (3), a bus-to-serial port module (4), a relay (5), a DC power supply (6), an air switch (7) and a toggle switch (8). The wireless Bluetooth module (3) is respectively connected to the bus-to-serial port module (4), the relay (5), the DC power supply (6) and the toggle switch (8) through a signal line, the bus-to-serial port module (4) is connected to the air switch (7) through a signal line, and the relay (5) is respectively connected to the DC power supply (6) and the toggle switch (8) through a signal line. A method for using a battery charging monitoring device is characterized in that the following steps are implemented in sequence: ① connection; ② fuzzy judgment; ③ precise matching; ④ data uploading. The present invention has accurate monitoring, safety and reliability.

Description

Technical Field

[0001] The present invention relates to the field of electric equipment monitoring, and in particular to a battery charging monitoring device and a use method thereof. Background Art

[0002] In recent years, electric bicycles have become an important means of transportation for the majority of residents, but at the same time, there are safety hazards in the charging process of electric bicycles. Due to imperfect control, the battery may overheat due to a malfunction during the charging process, causing a fire or even an explosion, causing significant losses to people’s lives and property. Summary of the invention

[0003] In order to overcome the defects of the prior art and provide a monitoring device that is accurate, safe and reliable, the present invention discloses a battery charging monitoring device and a method for using the same.

[0004] The present invention achieves the purpose of the invention through the following technical solutions:

[0005] A battery charging monitoring device includes a circuit board, which is fixed in a housing. The device is characterized in that it also includes a voltage conversion module, a wireless Bluetooth module, a bus-to-serial port module, a relay, a DC power supply, an air switch and a toggle switch.

[0006] The voltage conversion module, wireless Bluetooth module, bus-to-serial port module, relay, DC power supply, air switch and toggle switch are all fixed on the circuit board.

[0007] The positive and negative electrodes of the DC power supply are connected to the positive and negative electrodes of the voltage conversion module through wires.

[0008] The wireless Bluetooth module is connected to the bus-to-serial port module, relay, DC power supply and toggle switch through signal lines.

[0009] The bus-to-serial port module is connected to the air switch via a signal line.

[0010] The relay is connected to the DC power supply and the toggle switch through the signal line.

[0011] The DC power supply is connected to the air switch through a signal line.

[0012] The battery charging monitoring device is characterized in that:

[0013] The wireless Bluetooth module has GND_1 pin, GND_2 pin, GND_3 pin, IO0 pin, IO2 pin, IO4 pin, IO12 pin, IO13 pin, IO14 pin, IO15 pin, IO16 pin, U0T pin, U0R pin, VCC pin, 3V3 pin and 5V pin.

[0014] The bus to serial port module has VCC pin, TXD pin, RXD pin, GND pin, A+ pin and B- pin.

[0015] The relay has VCC pin, GND pin, IN pin, NC pin, COM pin and NO pin.

[0016] The DC power supply has VCC pin, GND pin and P2 pin.

[0017] The air switch has P1 pin, P2 pin, P3 pin and P4 pin.

[0018] The toggle switch has MH1 pin, NO pin, COM pin and MH2 pin.

[0019] The U0T pin of the wireless Bluetooth module is connected to the TXD pin of the bus-to-serial port module, the U0R pin of the wireless Bluetooth module is connected to the RXD pin of the bus-to-serial port module, the IO12 pin of the wireless Bluetooth module is connected to the IN pin of the relay, the GND_1 pin of the wireless Bluetooth module is respectively connected to the GND pin of the bus-to-serial port module, the NO pin of the relay and the negative output terminal of the battery, the 5V pin of the wireless Bluetooth module is respectively connected to the VCC pin of the bus-to-serial port module, the VCC pin of the relay and the NO pin of the DC power supply,

[0020] The A+ pin of the bus-to-serial port module is connected to the P1 pin of the air switch, and the B- pin of the bus-to-serial port module is connected to the P2 pin of the air switch.

[0021] The COM pin of the relay is connected to the negative input terminal of the battery and the GND pin of the DC power supply respectively, and the NO pin of the relay is connected to the P4 pin of the air switch.

[0022] The VCC pin of the DC power supply is connected to the positive input terminal of the battery and the P3 pin of the air switch respectively.

[0023] The MH1 pin, NO pin and COM pin of the slide switch are all connected to the positive output terminal of the battery.

[0024] The method for using the battery charging monitoring device is characterized by being implemented in sequence according to the following steps:

[0025] ① Connection: Connect the air switch in series to the battery charging circuit. The voltage conversion module will transform the DC power input from the DC power supply and supply power to the wireless Bluetooth module, bus-to-serial port module and relay.

[0026] ② Fuzzy judgment: the relay is in the disconnected state, the air switch is closed, the charging circuit is turned on, the battery is in the charging state, the air switch transmits the power data to the bus-to-serial port module, and the bus-to-serial port module sequentially compares the increase of the power data in every two-second interval within fifteen seconds. If it meets the established range, the warning information is uploaded to the cloud server through the wireless Bluetooth module;

[0027] ③ Accurate matching: Within thirty minutes, the bus-to-serial port module will dynamically time-regulate all the electric energy data with the standard curve based on the Euclidean distance and obtain the final distance. If the final distance data is lower than the set value, the bus-to-serial port module will send a high-level signal to the relay, the relay will be energized, the air switch will be disconnected, and the charging circuit will be cut off;

[0028] ④ Data upload: The bus-to-serial port module uploads the recorded power consumption data to the cloud server in real time through the wireless Bluetooth module, realizing big data management.

[0029] The present invention can be used for the safety supervision of electric bicycle charging. It monitors the user's electricity usage in real time. When the system detects that the user data meets the battery charging fuzzy standard (i.e., there is a safety hazard) within a certain period of time, it will immediately alarm and notify the manager to forcibly cut off the power supply, so that the user can charge safely and assuredly, solving the problem of the lack of existing electric vehicle charging feature detection technology.

[0030] Specifically:

[0031] 1. The present invention can monitor the user's electricity usage in real time and detect whether there is indoor charging, which can effectively prevent fires caused by residents charging indoors, reduce the risk of fire in the area, and protect the lives and property of the people.

[0032] 2. When the present invention detects that the indoor battery is being charged, it can promptly notify the apartment manager or community manager that illegal charging has occurred.

[0033] 3. The present invention has a data networking function, which can upload the monitored user electricity consumption data in real time and incorporate the data into the supervision big data to realize big data management.

[0034] 4. The present invention is installed in the electric box, and as long as the user is charging, supervision can be carried out, and potential safety hazards can be solved directly from the source. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a circuit diagram of the present invention,

[0036] Figure 2 This is the complete electric vehicle charging curve when the present invention is used. DETAILED DESCRIPTION

[0037] The present invention is further described below by means of specific examples. Example

[0038] A battery charging monitoring device comprises a circuit board 1, a voltage conversion module 2, a wireless Bluetooth module 3, a bus-to-serial port module 4, a relay 5, a DC power supply 6, an air switch 7 and a toggle switch 8. Figure 1 As shown, the specific structure is:

[0039] The circuit board 1 is fixed in the housing, and the voltage conversion module 2, the wireless Bluetooth module 3, the bus-to-serial port module 4, the relay 5, the DC power supply 6, the air switch 7 and the toggle switch 8 are all fixed on the circuit board 1.

[0040] The positive and negative electrodes of the DC power supply 6 are connected to the positive and negative electrodes of the voltage conversion module 2 through wires, respectively.

[0041] The wireless Bluetooth module 3 is connected to the bus-to-serial port module 4, the relay 5, the DC power supply 6 and the toggle switch 8 through signal lines.

[0042] The bus-to-serial port module 4 is connected to the air switch 7 via a signal line.

[0043] The relay 5 is connected to the DC power supply 6 and the toggle switch 8 through signal lines.

[0044] The DC power supply 6 is connected to the air switch 7 via a signal line.

[0045] In this embodiment:

[0046] The wireless Bluetooth module 3 is provided with a GND_1 pin, a GND_2 pin, a GND_3 pin, an IO0 pin, an IO2 pin, an IO4 pin, an IO12 pin, an IO13 pin, an IO14 pin, an IO15 pin, an IO16 pin, a U0T pin, a U0R pin, a VCC pin, a 3V3 pin and a 5V pin.

[0047] The bus-to-serial port module 4 is provided with a VCC pin, a TXD pin, a RXD pin, a GND pin, an A+ pin and a B- pin.

[0048] Relay 5 is provided with a VCC pin, a GND pin, an IN pin, an NC pin, a COM pin and a NO pin.

[0049] The DC power supply 6 has a VCC pin, a GND pin and a P2 pin.

[0050] The air switch 7 is provided with a P1 pin, a P2 pin, a P3 pin and a P4 pin.

[0051] The toggle switch 8 is provided with a MH1 pin, a NO pin, a COM pin and a MH2 pin.

[0052] The U0T pin of the wireless Bluetooth module 3 is connected to the TXD pin of the bus-to-serial port module 4, the U0R pin of the wireless Bluetooth module 3 is connected to the RXD pin of the bus-to-serial port module 4, the IO12 pin of the wireless Bluetooth module 3 is connected to the IN pin of the relay 5, the GND_1 pin of the wireless Bluetooth module 3 is respectively connected to the GND pin of the bus-to-serial port module 4, the NO pin of the relay 5 and the negative output terminal of the battery, the 5V pin of the wireless Bluetooth module 3 is respectively connected to the VCC pin of the bus-to-serial port module 4, the VCC pin of the relay 5 and the NO pin of the DC power supply 6,

[0053] The A+ pin of the bus-to-serial port module 4 is connected to the P1 pin of the air switch 7, and the B- pin of the bus-to-serial port module 4 is connected to the P2 pin of the air switch 7.

[0054] The COM pin of relay 5 is connected to the negative input terminal of the battery and the GND pin of the DC power supply 6 respectively, and the NO pin of relay 5 is connected to the P4 pin of the air switch 7.

[0055] The VCC pin of the DC power supply 6 is connected to the positive input terminal of the battery and the P3 pin of the air switch 7 respectively.

[0056] The MH1 pin, the NO pin and the COM pin of the toggle switch 8 are all connected to the positive output terminal of the battery.

[0057] When this embodiment is used, the following steps are implemented in sequence:

[0058] ① Connection: Connect the air switch 7 in series to the charging circuit of the battery. The voltage conversion module 2 transforms the DC power input from the DC power supply 6 and supplies power to the wireless Bluetooth module 3, the bus-to-serial port module 4 and the relay 5;

[0059] ② Fuzzy judgment: the relay 5 is in the disconnected state, the air switch 7 is closed, the charging circuit is turned on, the battery is in the charging state, the air switch 7 transmits the power data to the bus-to-serial port module 4, and the bus-to-serial port module 4 sequentially compares the increase of the power data in every two-second interval within fifteen seconds. If it meets the predetermined range, the wireless Bluetooth module 3 uploads a warning message to the cloud server;

[0060] ③ Accurate matching: Within thirty minutes, the bus-to-serial port module 4 dynamically matches all the electric energy data with the standard curve based on the Euclidean distance and obtains the final distance. If the final distance data is lower than the set value, the bus-to-serial port module 4 sends a high-level signal to the relay 5, the relay 5 is energized, the air switch 7 is disconnected, and the charging circuit is cut off;

[0061] ④ Data upload: The bus-to-serial port module 4 uploads the recorded power consumption data to the cloud server in real time through the wireless Bluetooth module 3, thus realizing big data management.

[0062] The hardware of this embodiment includes an electric energy meter module, a small power supply module, a TTL to RS485 module, a central control chip, a forced switching system, etc. The software is divided into several parts such as electric energy data acquisition, storage, reading, analysis and calculation.

[0063] In isolated word speech recognition, the simplest and most effective method is to use the Linear Predictive Coefficients (LPC) algorithm, which simulates the human principle of speech recognition and is obtained by analyzing the model of the vocal tract short tube cascade. Assuming that the transfer function of the system is similar to that of a full-pole digital filter, 12 to 16 poles are usually enough to describe the characteristics of the speech signal. Therefore, for the speech signal at time n, the linear combination of the signal at the previous time can be used to approximate the simulation, and then the sampling value of the speech signal and the sampling value of the linear prediction are calculated, and the mean square error (MSE) between the two is minimized to obtain LPC.

[0064] The LPC algorithm can be used to match similar curves of different lengths and calculate the distance between the two sides. A typical complete charging curve of an electric vehicle is fixed, the point information is taken as the reference curve, and the point information obtained by the electric energy meter is taken as the test curve. The similarity of the two curves is calculated and the result is used to determine whether it is an electric vehicle charging feature.

[0065] The following is an example calculation:

[0066] d matrix: 9.00 5.00 5.00 4.00 2.00 4.00 5.00 1.00 1.00 2.00 4.00 10.00 2.00 0.00 2.00 5.00 9.00 17.00 0.00 2.00 8.00 13.00 17.00 25.00

[0071] g matrix: 16.00 6.00 7.00 8.00 8.00 12.00 7.00 1.00 2.00 4.00 8.00 18.00 2.00 0.00 2.00 7.00 16.00 33.00 0.00 2.00 10.00 23.00 40.00 65.00

[0076] Target matrix:

[0077] (1,0) (1,1) (1,2) (1,3) (1,3) (0,4)

[0078] (2,0) (2,1) (1,1) (1,2) (1,3) (1,4)

[0079] (3,0) (3,0) (2,1) (2,2) (2,3) (2,4)

[0080] (-1,-1) (3,0) (3,1) (3,2) (3,3) (3,4)

[0081] path:

[0082] t=: 0 (0,5): Shortest path: 12.00

[0083] t=: 1 (0,4): Shortest path: 8.00

[0084] t=: 2 (1,3): Shortest path: 4.00

[0085] t=: 3 (1,2): Shortest path: 2.00

[0086] t=: 4 (1,1): Shortest path: 1.00

[0087] t=: 5 (2,1): Shortest path: 0.00

[0088] t=: 6 (3,0): Shortest path: 0.00

[0089] Final path: 12.00.

[0090] The calculation example is run as described above. The input is two simple arrays: (1,2,3,3,2,1) and (1,2,2,1). Obviously, if the array element number is the horizontal coordinate and the array element is the vertical coordinate, the two curves are similar curves of different lengths.

[0091] The d matrix is ​​the Euclidean distance between the elements of the reference curve and the test curve, and the g matrix is ​​the cumulative minimum distance of each path. The direction array and the shortest distance are determined by the g matrix, and the forward path is output from the end point back to the starting point to obtain the cumulative distance under the shortest path, which is the similarity parameter of the two curves. When the curves are exactly the same, the distance is 0.

[0092] Euclidean distance refers to Euclidean distance, also known as Euclidean metric. In mathematics, Euclidean distance is the straight-line distance between two points in Euclidean space. Using Euclidean distance, Euclidean space becomes a metric space, and the associated norm is called the Euclidean norm.

[0093] Figure 2 For a complete electric vehicle charging curve, the main program uses the curve points as a reference to match the accumulated points of the energy meter data during the charging process. When the similarity parameters reach the standard, the central control chip activates the forced cutting device to cut off the power supply.

Claims

1. A method for using a battery charging monitoring device, the battery charging monitoring device comprising a circuit board (1), a voltage conversion module (2), a wireless Bluetooth module (3), a bus-to-serial port module (4), a relay (5), a DC power supply (6), an air switch (7) and a toggle switch (8), The circuit board (1) is fixed in the housing, and the voltage conversion module (2), the wireless Bluetooth module (3), the bus-to-serial port module (4), the relay (5), the DC power supply (6), the air switch (7) and the toggle switch (8) are all fixed on the circuit board (1). The positive electrode and negative electrode of the DC power supply (6) are respectively connected to the positive electrode and negative electrode of the voltage conversion module (2) through wires. The wireless Bluetooth module (3) is connected to the bus-to-serial port module (4), the relay (5), the DC power supply (6) and the toggle switch (8) through signal lines. The bus-to-serial port module (4) is connected to the air switch (7) via a signal line. The relay (5) is connected to the DC power supply (6) and the toggle switch (8) through signal lines. The DC power supply (6) is connected to the air switch (7) via a signal line; The wireless Bluetooth module (3) is provided with a GND_1 pin, a GND_2 pin, a GND_3 pin, an IO0 pin, an IO2 pin, an IO4 pin, an IO12 pin, an IO13 pin, an IO14 pin, an IO15 pin, an IO16 pin, a U0T pin, a U0R pin, a VCC pin, a 3V3 pin and a 5V pin. The bus-to-serial port module (4) is provided with a VCC pin, a TXD pin, a RXD pin, a GND pin, an A+ pin and a B- pin. The relay (5) is provided with a VCC pin, a GND pin, an IN pin, an NC pin, a COM pin and a NO pin. The DC power supply (6) has a VCC pin, a GND pin and a P2 pin. The air switch (7) is provided with a P1 pin, a P2 pin, a P3 pin and a P4 pin. The toggle switch (8) is provided with an MH1 pin, a NO pin, a COM pin and an MH2 pin. The U0T pin of the wireless Bluetooth module (3) is connected to the TXD pin of the bus-to-serial port module (4), the U0R pin of the wireless Bluetooth module (3) is connected to the RXD pin of the bus-to-serial port module (4), the IO12 pin of the wireless Bluetooth module (3) is connected to the IN pin of the relay (5), the GND_1 pin of the wireless Bluetooth module (3) is respectively connected to the GND pin of the bus-to-serial port module (4), the NO pin of the relay (5) and the negative output terminal of the battery, the 5V pin of the wireless Bluetooth module (3) is respectively connected to the VCC pin of the bus-to-serial port module (4), the VCC pin of the relay (5) and the NO pin of the DC power supply (6), The A+ pin of the bus-to-serial port module (4) is connected to the P1 pin of the air switch (7), and the B- pin of the bus-to-serial port module (4) is connected to the P2 pin of the air switch (7). The COM pin of the relay (5) is connected to the negative input terminal of the battery and the GND pin of the DC power supply (6), respectively, and the NO pin of the relay (5) is connected to the P4 pin of the air switch (7). The VCC pin of the DC power supply (6) is connected to the positive input terminal of the battery and the P3 pin of the air switch (7). The MH1 pin, NO pin and COM pin of the toggle switch (8) are all connected to the positive output terminal of the battery; Its characteristics are: Follow the steps below to implement: ① Connection: The air switch (7) is connected in series to the charging circuit of the battery, and the voltage conversion module (2) transforms the DC power input from the DC power supply (6) and supplies power to the wireless Bluetooth module (3), the bus-to-serial port module (4) and the relay (5); ② Fuzzy judgment: the relay (5) is in the disconnected state, the air switch (7) is closed, the charging circuit is connected, the battery is in the charging state, the air switch (7) transmits the power data to the bus-to-serial port module (4), and the bus-to-serial port module (4) sequentially compares the increase of the power data in every two-second interval within fifteen seconds. If it meets the predetermined range, the warning information is uploaded to the cloud server through the wireless Bluetooth module (3); ③ Accurate matching: within thirty minutes, the bus-to-serial port module (4) dynamically matches all the electric energy data with the standard curve based on the Euclidean distance and obtains the final distance. If the final distance data is lower than the set value, the bus-to-serial port module (4) sends a high-level signal to the relay (5), the relay (5) is energized, the air switch (7) is disconnected, and the charging circuit is cut off; ④ Data upload: The bus-to-serial port module (4) uploads the recorded power consumption data to the cloud server in real time via the wireless Bluetooth module (3).

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