CN108418309A - A Vehicle Power Distribution Monitoring System Based on CAN Bus - Google Patents

Abstract

The invention discloses a kind of vehicle-mounted distributing monitoring system based on CAN bus, including host monitor unit, power supply unit and remote monitoring unit, the output end of power supply unit is connected with host monitor unit and LED light, host monitor unit is connect with remote monitoring unit by radio communication, host monitor unit is parallel with voltage monitoring unit, current monitoring unit, residual current monitoring unit and temperature and humidity monitor unit by CAN bus, and microprocessor is equipped in host monitor unit.Based on the vehicle-mounted distributing monitoring system of CAN bus, host monitor unit and voltage monitoring unit, current monitoring unit, residual current monitoring unit and temperature and humidity monitor unit are connected by CAN bus, each detection control unit is mutual indepedent, it is managed concentratedly by host monitor unit, modularized design thinking is easy to extend, and the integration degree higher of vehicle-mounted distributing monitoring system, the volume of vehicle-mounted power distribution unit is more compact, is suitable for vehicle-mounted nervous environment.

Description

A Vehicle Power Distribution Monitoring System Based on CAN Bus

technical field

The invention relates to the technical field of a vehicle power distribution monitoring system, in particular to a CAN bus-based vehicle power distribution monitoring system.

Background technique

The vehicle-mounted power distribution system is the power supply for vehicle-mounted equipment. It is applied to the distribution of AC power supply for various vehicle-mounted electronic equipment. It generally has functions such as over-current, over-voltage, under-voltage, leakage and over-limit protection. The general function of the vehicle-mounted AC power distribution system is relatively simple. AC circuit breakers are used for switch control and power protection. There is no quantitative detection of power parameters, such as current, voltage and residual current. Once the type is selected, the protection parameters have been determined and cannot be set according to actual needs. The application is not flexible. Moreover, the volume of the AC circuit breaker is large, which determines that the volume of the on-board power distribution equipment is also large. Even if the number of output circuits is small, the volume will not be reduced accordingly.

Contents of the invention

The purpose of the present invention is to provide a vehicle-mounted power distribution monitoring system based on CAN bus, which has the advantages of small size, high reliability and good scalability, and solves the problems in the prior art.

To achieve the above object, the present invention provides the following technical solutions: a CAN bus-based vehicle power distribution monitoring system, including a host monitoring unit, a power supply unit and a remote monitoring unit, the output of the power supply unit is connected with a host monitoring unit and an LED The host monitoring unit is connected with the remote monitoring unit through wireless communication. The host monitoring unit is connected in parallel with a voltage monitoring unit, a current monitoring unit, a residual current monitoring unit and a temperature and humidity monitoring unit through the CAN bus. The host monitoring unit is equipped with a microprocessor. The microprocessor is connected with a communication module, the communication module is connected with the remote monitoring unit, the input end of the microprocessor is connected with buttons, acquisition card and reset module, and the output end of the microprocessor is connected with the data storage module, LCD display screen and voice alarm module , a voltage sensor is installed in the voltage monitoring unit, the input end of the voltage sensor is connected to the first switch control, the output end of the voltage sensor is connected to the first alarm module and the first protection module, and the first protection module is connected to the first switch control , a current sensor is installed in the current monitoring unit, the input end of the current sensor is connected to the second switch control, the output end of the current sensor is connected to the second alarm module and the second protection module, and the second protection module is connected to the second switch control , a residual current monitor is installed in the residual current monitoring unit, the input end of the residual current monitor is connected to the third switch control, the output end of the residual current monitor is connected to the third alarm module and the third protection module, the third protection The module is connected to the third switch control, the temperature and humidity monitoring unit is equipped with a temperature and humidity sensor, the input end of the temperature and humidity sensor is connected to the fourth switch control, and the output end of the temperature and humidity sensor is connected to the fourth alarm module and the fourth protection module , the fourth protection module is connected to the fourth switch control.

Preferably, the voltage sensor, current sensor, current monitor and temperature and humidity sensor are all connected to the acquisition card through the CAN bus.

Preferably, the first switch control, the second switch control, the third switch control and the four switch controls are respectively connected to the microprocessor.

Preferably, the first alarm module, the second alarm module, the third alarm module and the fourth alarm module are respectively connected to the microprocessor.

Compared with the prior art, the beneficial effects of the present invention are as follows:

The on-board power distribution monitoring system based on the CAN bus connects the host monitoring unit with the voltage monitoring unit, current monitoring unit, residual current monitoring unit and temperature and humidity monitoring unit through the CAN bus. Each detection and control unit is independent of each other and is centrally managed by the host monitoring unit. , Modular design idea, easy to expand, and the integration degree of the on-board power distribution monitoring system is higher, the volume of the on-board power distribution unit is more compact, and can better adapt to the tense environment of the car. At the same time, a remote monitoring unit is set up, through wireless control, remote It can also be monitored, which is convenient and practical.

Description of drawings

Fig. 1 is the overall frame diagram of the present invention;

Fig. 2 is the internal connection diagram of the host monitoring unit of the present invention;

Fig. 3 is the internal connection diagram of the voltage monitoring unit of the present invention;

Fig. 4 is the internal connection diagram of the current monitoring unit of the present invention;

Fig. 5 is the internal connection diagram of the residual current monitoring unit of the present invention;

Fig. 6 is an internal connection diagram of the temperature and humidity monitoring unit of the present invention.

In the figure: 1 host monitoring unit, 11 microprocessor, 12 keys, 13 acquisition card, 14 data storage module, 15 LCD display, 16 voice alarm module, 17 reset module, 18 communication module, 2 voltage monitoring unit, 21 voltage Sensor, 22 first switch control, 23 first alarm module, 24 first protection module, 3 current monitoring unit, 31 current sensor, 32 second switch control, 33 second alarm module, 34 second protection module, 4 residual current Monitoring unit, 41 current monitor, 42 third switch control, 43 third alarm module, 44 third protection module, 5 temperature and humidity monitoring unit, 51 temperature and humidity sensor, 52 fourth switch control, 53 fourth alarm module, 54 The fourth protection module, 6 power supply units, 61 LED lights, 7 remote monitoring units.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1-2, a vehicle power distribution monitoring system based on CAN bus, including a host monitoring unit 1, a power supply unit 6 and a remote monitoring unit 7, the output of the power supply unit 6 is connected to the host monitoring unit 1 and LED lights 61 , the power supply unit 6 provides power for the host monitoring unit 1, and the LED light 61 shows whether the power is turned on. The host monitoring unit 1 is connected with the remote monitoring unit 7 through wireless communication. The host monitoring unit 1 is connected in parallel with a voltage monitoring unit 2, a current Monitoring unit 3, residual current monitoring unit 4 and temperature and humidity monitoring unit 5, a microprocessor 11 is installed in the host monitoring unit 1, the microprocessor 11 is connected with a communication module 18, and the communication module 18 is connected with the remote monitoring unit 7, the communication module 18 Including short-distance wireless communication and GPRS communication, the remote monitoring unit 7 receives the information transmitted by the host monitoring unit 1 in real time through the communication module 18, and can issue commands to the host monitoring unit 1, and the input end of the microprocessor 11 is connected with buttons 12, Acquisition card 13 and reset module 17, operator can control microprocessor 11 by button 12, and acquisition card 13 is used for receiving the analog signal that each monitoring unit transmits, and the output end of microprocessor 11 is connected with data storage module 14, LCD The display screen 15 and the voice alarm module 16, the microprocessor 11 converts the received analog signal into a digital signal, and displays it to the user by the LCD screen 15, and the data storage module 14 can store the data. When the data exceeds the preset value, the voice The alarm module 16 issues an alarm.

Please refer to Fig. 3-6, the voltage sensor 21 is installed in the voltage monitoring unit 2, the input end of the voltage sensor 21 is connected with the first switch control 22, the first switch control 22 controls the operation or stop of the voltage sensor 21, the output terminal of the voltage sensor 21 The first alarm module 23 and the first protection module 24 are connected, and the voltage sensor 21 transmits the detection value to the first alarm module 23 and the first protection module 24. If the preset value is exceeded, the first alarm module 23 will alarm, and the first protection module will 24 is connected to the first switch control 22. When the detection value of the voltage sensor 21 exceeds the working range of the voltage sensor 21, the first protection module 24 controls the first switch control 22 to stop working. A current sensor 31 is installed in the current monitoring unit 3 for detecting The current value, the input terminal of the current sensor 31 is connected with the second switch control 32, the output terminal of the current sensor 31 is connected with the second alarm module 33 and the second protection module 34, the second protection module 34 is connected with the second switch control 32, and the remaining A residual current monitor 41 is installed in the current monitoring unit 4 for detecting residual current. The input terminal of the residual current monitor 41 is connected to the third switch control 42, and the output terminal of the residual current monitor 41 is connected to the third alarm module 43 and The third protection module 44, the third protection module 44 is connected with the third switch control 42, the temperature and humidity sensor 51 is installed in the temperature and humidity monitoring unit 5, is used to detect whether the temperature and humidity exceed the standard, the input end of the temperature and humidity sensor 51 is connected to the fourth The switch control 52, the output end of the temperature and humidity sensor 51 is connected with the fourth alarm module 53 and the fourth protection module 54, the fourth protection module 54 is connected with the fourth switch control 52, the voltage sensor 21, the current sensor 31, the current monitor 41 And the temperature and humidity sensor 51 is all connected with the acquisition card 13 by the CAN bus, the detection data of each monitoring unit is transmitted to the host monitoring unit 1, the first switch control 22, the second switch control 32, the third switch control 42 and the fourth switch Control 52 is connected with microprocessor 11 respectively, and microprocessor 11 controls each detection unit internal sensor to work by switch, and the first alarm module 23, the second alarm module 33, the third alarm module 43 and the fourth alarm module 53 communicate with the microprocessor respectively. The processor 11 is connected, and the microprocessor 11 sets the working parameters of the alarm modules. If the preset value is exceeded, each alarm module will alarm.

Working process: the power supply unit 6 provides power for the host monitoring unit 1, and the user can control the microprocessor 11 through the button 12 or the remote monitoring unit 7, and the microprocessor 11 is connected with each alarm module and switch control through the CAN bus to monitor the alarm parameters. Set, and control the switch control to prompt the voltage sensor 21, the current sensor 31, the residual current monitor 41 and the temperature and humidity sensor 51 to work, and the voltage sensor 21, the current sensor 31, the residual current monitor 41 and the temperature and humidity sensor 51 will transmit the detection data To the acquisition card 13, the microprocessor 11 performs signal conversion, and displays it to the user through the LCD display 15 or the remote monitoring unit 7. When the detected data exceeds the preset value, the voice alarm module 16 reports to the police and plays a monitoring function.

To sum up: this vehicle-mounted power distribution monitoring system based on the CAN bus connects the host monitoring unit 1, the voltage monitoring unit 2, the current monitoring unit 3, the residual current monitoring unit 4 and the temperature and humidity monitoring unit 5 through the CAN bus. The units are independent of each other and are managed centrally by the host monitoring unit 1. The modular design idea is easy to expand, and the integration degree of the on-board power distribution monitoring system is higher. Set up remote monitoring unit 7 simultaneously, through wireless control, also can monitor remotely, convenient and practical.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. a kind of vehicle-mounted distributing monitoring system based on CAN bus, including host monitor unit（1）, power supply unit（6）With it is long-range Monitoring unit（7）, it is characterised in that：The power supply unit（6）Output end be connected with host monitor unit（1）And LED light （61）, host monitor unit（1）By radio communication with remote monitoring unit（7）Connection, host monitor unit（1）Pass through CAN Bus parallel connection has voltage monitoring unit（2）, current monitoring unit（3）, residual current monitoring unit（4）With temperature and humidity monitor unit （5）, host monitor unit（1）Microprocessor is inside installed（11）, microprocessor（11）It is connected with communication module（18）, communicate mould Block（18）Connect remote monitoring unit（7）, microprocessor（11）Input terminal be connected with button（12）, capture card（13）And reset Module（17）, microprocessor（11）Output end be connected with data memory module（14）, LCD display（15）With audio alert mould Block（16）, the voltage monitoring unit（2）Voltage sensor is inside installed（21）, voltage sensor（21）Input terminal connection the One switch control（22）, voltage sensor（21）Output end be connected with the first alarm module（23）With the first protection module （24）, the first protection module（24）It is controlled with first switch（22）Connection, the current monitoring unit（3）Electric current biography is inside installed Sensor（31）, current sensor（31）Input terminal connection second switch control（32）, current sensor（31）Output end connect It is connected to the second alarm module（33）With the second protection module（34）, the second protection module（34）It is controlled with second switch（32）Even It connects, the residual current monitoring unit（4）Residual current monitoring device is inside installed（41）, residual current monitoring device（41）Input End connection third switch control（42）, residual current monitoring device（41）Output end be connected with third alarm module（43）And third Protection module（44）, third protection module（44）It switchs and controls with third（42）Connection, the temperature and humidity monitor unit（5）Interior peace Equipped with Temperature Humidity Sensor（51）, Temperature Humidity Sensor（51）Input terminal connection the 4th switch control（52）, temperature and humidity sensing Device（51）Output end be connected with the 4th alarm module（53）With the 4th protection module（54）, the 4th protection module（54）With the 4th Switch control（52）Connection.

2. a kind of vehicle-mounted distributing monitoring system based on CAN bus according to claim 1, it is characterised in that：The electricity Pressure sensor（21）, current sensor（31）, electric current monitor（41）And Temperature Humidity Sensor（51）By CAN bus with adopt Truck（13）Connection.

3. a kind of vehicle-mounted distributing monitoring system based on CAN bus according to claim 1, it is characterised in that：Described One switch control（22）, second switch control（32）, third switch control（42）With four switch controls（52）Respectively with microprocessor Device（11）Connection.

4. a kind of vehicle-mounted distributing monitoring system based on CAN bus according to claim 1, it is characterised in that：Described One alarm module（23）, the second alarm module（33）, third alarm module（43）With the 4th alarm module（53）Respectively with micro- place Manage device（11）Connection.