CN111038285A - Low-power-consumption monitoring method and system and vehicle - Google Patents
Low-power-consumption monitoring method and system and vehicle Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention provides a low-power-consumption monitoring method, a low-power-consumption monitoring system and a vehicle, wherein the monitoring system is powered by adopting a normal-fire power supply mode of a low-voltage storage battery, if a total fire signal of the whole vehicle is not detected, a low-power-consumption control circuit of a CAN module is started, the power supply of the low-voltage storage battery to the CAN module is stopped, the electric quantity of the low-voltage storage battery is saved, the problem of feed of the low-voltage storage battery is avoided, and the normal and stable operation of the whole vehicle is ensured.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a low-power consumption monitoring method, a low-power consumption monitoring system and a vehicle.
Background
In a monitoring system of an electric vehicle, there are devices that need to be kept in a power-on state at all times (for example, a key signal receiver for starting a vehicle, etc.), and there are devices that need to be powered on only when the vehicle is driven and charged (for example, a device for controlling an instrument panel, etc.). Currently, most monitoring systems can supply power to the two devices separately. In an electric vehicle, a power source that always supplies power to a load and cannot be turned off by a switch is referred to as "normally-ON power", and a power source that supplies power to a load only when an ON relay or a switch is turned ON is referred to as "ON power", and is also referred to as "main power" (rocker switch). The device needing to be kept in the power-ON state can directly provide constant-temperature power from the storage battery, and the device needing to be powered ON only when the automobile is driven and charged can provide or disconnect ON gear power according to actual needs. When the ON gear is provided, the monitoring system is in a normal working state; after the ON gear is disconnected, the device which needs to be powered ON only when the automobile is driven and charged does not consume electric energy any more, and at the moment, the monitoring system enters a low power consumption mode, namely a dormant state.
The monitoring system is used as a vehicle-mounted terminal, can monitor the position of a vehicle and vehicle fault warning information in real time, can manage energy consumption, effectively ensures the safe, efficient and standard operation of the vehicle, and is widely applied. As shown in a data transmission diagram of a monitoring system in the prior art in fig. 1, the monitoring system is installed on a vehicle, the monitoring system is powered by a main fire (rocker switch) of the whole vehicle, and when the rocker switch is turned on, the monitoring system starts to work to monitor the running state of the whole vehicle. However, with the development of new energy vehicle intellectualization and internet of things, users need to monitor normal operation data of vehicles, and remote control of parts on the vehicles, and the requirements of remote reservation and the like are increasing, most users want to be realized by a mobile phone APP or a remote monitoring platform under the condition of not getting on the vehicle, so that in the aspect of monitoring system power supply, the current main fire (rocker switch) cannot be used for supplying power, but the normal fire (24V storage battery) is adopted for supplying power, and many times when the vehicle is in a parking state, a vehicle brake is not closed, the monitoring system always works, the risk of power feeding of the 24V storage battery is easily caused, and therefore, a related technical scheme needs to be designed to solve the problem of storage battery power feeding.
Disclosure of Invention
The invention aims to provide a low-power consumption monitoring method, a low-power consumption monitoring system and a vehicle, which are used for solving the problem of storage battery feeding in the prior art.
In order to achieve the above object, the present invention provides a low power consumption monitoring method, which comprises the following steps:
when a total fire signal of the whole vehicle is detected, the CAN module is in a normal working state; and when the total fire signal of the whole vehicle is not detected, the CAN module is in a power-off state.
If the total fire signal of the whole vehicle is not detected, the low-power consumption control circuit of the CAN module is started, the power supply of the low-voltage storage battery to the CAN module is stopped, the electric quantity of the low-voltage storage battery is saved, the problem of feed of the low-voltage storage battery is avoided, and the normal and stable operation of the whole vehicle is ensured.
In order to further reduce the electric quantity loss of the low-voltage storage battery, when a total fire signal of the whole vehicle is detected, the wireless communication module is in a normal working state, and when the total fire signal of the whole vehicle is not detected, the wireless communication module is in a standby state.
The invention also provides a low-power consumption monitoring system, which comprises a 24V storage battery, a master control module, a wireless communication module and a CAN module, wherein the 24V storage battery is connected with the master control module; the low-power-consumption control circuit of the CAN module comprises a first switch tube, the first switch tube is serially arranged in a power supply line of the CAN module, a control end of the first switch tube is connected with an output end of the main control module and used for receiving a total fire signal of the whole vehicle output by the main control module, and when the total fire signal of the whole vehicle is received, the first switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the first switching tube is controlled to be switched off.
The invention adopts the normal fire power supply mode of the low-voltage storage battery to supply power to the monitoring system, and starts the low-power consumption control circuit of the CAN module to stop the power supply of the low-voltage storage battery to the CAN module if the total fire signal of the whole vehicle is not detected, thereby saving the electric quantity of the low-voltage storage battery, avoiding the problem of feed of the low-voltage storage battery and ensuring the normal and stable operation of the whole vehicle.
In order to further reduce the electric quantity loss of the low-voltage storage battery, the low-power-consumption control circuit of the wireless communication module comprises a second switch tube, the input end and the output end of the second switch tube are connected in series in a starting loop of the wireless communication module, the control end of the second switch tube is connected with the output end of the main control module and used for receiving a whole vehicle total fire signal output by the main control module, and when the whole vehicle total fire signal is received, the second switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the second switching tube is controlled to be switched off.
In order to clearly show the connection relationship among all devices, the input end of the first switching tube is connected with the 24V storage battery, and the output end of the first switching tube is connected with a CAN module in the power supply circuit; the control end of the first switch tube is connected with the output end of the main control module through a first resistor, and the connection point of the control end of the first switch tube and the first resistor is connected with the 24V storage battery through a second resistor.
In order to clearly show the connection relationship among the devices, the input end of the second switching tube is connected with the starting port of the wireless communication module through a third resistor, and the output end of the second switching tube is grounded; the control end of the second switch tube is connected with the output end of the main control module through a fourth resistor, one end of the fourth resistor is grounded with the connection point of the control end of the second switch tube through a first capacitor, and one end of the fourth resistor is grounded with the connection point of the control end of the second switch tube through a fifth resistor.
Further, a second capacitor is connected in parallel between the input end and the output end of the second switch tube.
The first switch tube and the second switch tube are both triodes as the limit of the first switch tube and the second switch tube.
The invention also provides a vehicle which comprises a low-power consumption monitoring system, wherein the low-power consumption monitoring system comprises a 24V storage battery, a master control module, a wireless communication module and a CAN module, and the 24V storage battery is connected with the master control module; the low-power-consumption control circuit of the CAN module comprises a first switch tube, the first switch tube is serially arranged in a power supply line of the CAN module, a control end of the first switch tube is connected with an output end of the main control module and used for receiving a total fire signal of the whole vehicle output by the main control module, and when the total fire signal of the whole vehicle is received, the first switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the first switching tube is controlled to be switched off.
The invention adopts the normal fire power supply mode of the low-voltage storage battery to supply power to the monitoring system, and starts the low-power consumption control circuit of the CAN module to stop the power supply of the low-voltage storage battery to the CAN module if the total fire signal of the whole vehicle is not detected, thereby saving the electric quantity of the low-voltage storage battery, avoiding the problem of feed of the low-voltage storage battery and ensuring the normal and stable operation of the whole vehicle.
In order to further reduce the consumption of the electric quantity of the low-voltage storage battery, the low-power-consumption control circuit of the wireless communication module comprises a second switch tube, the input end and the output end of the second switch tube are connected in series in a starting loop of the wireless communication module, the control end of the second switch tube is connected with the output end of the main control module and used for receiving a whole vehicle total fire signal output by the main control module, and when the whole vehicle total fire signal is received, the second switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the second switching tube is controlled to be switched off.
Drawings
FIG. 1 is a data transfer block diagram of a prior art monitoring system;
FIG. 2 is a data transfer block diagram of the monitoring system of the present invention;
FIG. 3 is a low power consumption control circuit diagram of the CAN module of the present invention;
fig. 4 is a circuit diagram of a low power consumption control circuit of the wireless communication module of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings:
the invention provides a vehicle, which is an electric vehicle, a passenger car and other new energy vehicles, and comprises a low-power-consumption monitoring system, wherein the low-power-consumption monitoring system comprises a 24V storage battery, a master control module, a wireless communication module and a CAN module, and the 24V storage battery is connected with the master control module; the control end of the first switch tube is connected with the output end of the main control module and used for receiving a total fire signal of the whole vehicle output by the main control module, and when the total fire signal of the whole vehicle is received, the first switch tube is controlled to be conducted; when the total fire signal of the whole vehicle is not received, the first switch tube is controlled to be turned off.
The monitoring system is characterized in that a module with higher internal power consumption is also provided with a wireless communication module, in order to reduce the consumption of the wireless communication module on the electric quantity of the low-voltage storage battery, a low-power-consumption control circuit of the wireless communication module is also arranged, the low-power-consumption control circuit of the wireless communication module comprises a second switch tube, the input end and the output end of the second switch tube are connected in series in a starting loop of the wireless communication module, the control end of the second switch tube is connected with the output end of the main control module and used for receiving a total fire signal of the whole vehicle output by the main control module, and when the total fire signal of the whole vehicle is received; and when the total fire signal of the whole vehicle is not received, the second switching tube is controlled to be switched off.
As shown in the data transmission block diagram of the low power consumption monitoring system shown in fig. 2, a power module is further arranged inside the low power consumption monitoring system, a DC/DC power device is arranged inside the power module, the power module is connected with a 24V storage battery, the 24V storage battery is converted into low-voltage equipment in the low power consumption monitoring system through the power module to supply power, a total fire signal of the whole vehicle can be used as a path of activation signal and transmitted to a main control module of the low power consumption monitoring system through the power module, and the main control module controls a working mode of the monitoring system by using the signal.
The first switch tube is a transistor Q1, and the second switch tube is a transistor Q2.
Specifically, as shown in fig. 3, an input terminal of the transistor Q1 is connected to VCC in the power supply line, that is, connected to the power module, an output terminal of the transistor Q1 is connected to the CAN module in the power supply line, a control terminal of the transistor Q1 is connected to an output terminal of the main control module through a first resistor R1, a connection point of the control terminal of the transistor Q1 and a first resistor R1 is connected to VCC through a second resistor R2, wherein sizes of the first resistor R1 and the second resistor R2 are adjustable according to a conduction voltage of the transistor Q1.
As shown in fig. 4, an input terminal of the transistor Q2 is connected to the start port of the wireless communication module through a third resistor R3, and an output terminal of the transistor Q2 is grounded; the control end of the triode Q2 is connected with the output end of the main control module through a fourth resistor R4, the connection point of one end of the fourth resistor R4 and the control end of the triode Q2 is grounded through a first capacitor C1, and the connection point of the first capacitor C1 and the ground end is connected with the connection point of one end of the fourth resistor R4 and the control end of the triode Q2 through a fifth resistor R5. The first capacitor C1 and the fifth resistor R5 form an RC filter circuit for filtering. A second capacitor C2 is connected in parallel between the input end and the output end of the triode Q2, one end of a third resistor R3 is connected with the start port of the wireless communication module, and the other end of the third resistor R3 is grounded.
The low power consumption monitoring method of the embodiment comprises the following steps:
(1) when the vehicle normally operates, namely when the 24V storage battery is started, the main control module firstly checks whether the total fire signal input of the whole vehicle is received through internal logic. If the total fire signal of the whole vehicle is detected, the vehicle is in a normal operation state or a charging state at the moment, a normal working mode of the monitoring system is started, namely the CAN module and the wireless communication module are both in a normal working state, and data monitoring is carried out according to a normal data acquisition and transmission cycle.
(2) If the total fire signal of the whole vehicle is not detected, the vehicle is in a power-off parking state at the moment, and a low-power-consumption working mode of the monitoring system is started, namely the CAN module is in a power-off state, the wireless communication module is in a standby mode, and meanwhile, the data acquisition and transmission period of the monitoring system is reduced. Therefore, the remote control and remote reservation functions of the parts of the whole vehicle are realized, and the problem of insufficient power of a 24V storage battery is avoided.
And through internal logic processing, low-power consumption control power supply signals are respectively output to the CAN module and the wireless communication module. The low-power consumption control power supply signal controls the low-power consumption circuit of the corresponding module, so that the CAN module is in a power-off state, and the wireless communication module is in a standby state. At this time, the user can remotely set the parameters of the parts on the vehicle. The user issues spare part parameter to monitored control system through remote monitoring platform or cell-phone APP, and monitored control system receives through the wireless communication module of inside standby state to send to host system and preserve, when monitored control system is in normal operating mode (CAN module normally works), host system sends the parameter information of preserving to the CAN module, and the CAN module carries out spare part (like components and parts A in figure 2, components and parts B, components and parts C) parameter control through whole car CAN line.
As shown in fig. 3, the specific working process of the CAN module low power consumption control circuit is as follows: when the vehicle runs or is charged, the total fire signal of the whole vehicle is effective, the low-power-consumption power supply control signal is ineffective, and the monitoring system is in a normal working mode. Through the triode Q1, the CAN module is normally powered by VCC, and the CAN module normally works; when the vehicle is parked, the whole vehicle total fire signal is invalid, the corresponding low-power-consumption power supply control signal is valid, the monitoring system is in a low-power-consumption working mode, the triode Q1 cannot be conducted due to the voltage difference between the first resistor R1 and the second resistor R2, the CAN module is in a power-off state, and the CAN module stops working.
As shown in fig. 4, the low power consumption control circuit of the wireless communication module specifically includes: when the vehicle runs or is charged, the total fire signal of the whole vehicle is effective, the low-power-consumption power supply control signal is ineffective, the monitoring system is in a normal working mode, the standby working mode of the wireless communication module is ineffective, and the wireless communication module is in a normal working mode.
When the vehicle is parked, the whole vehicle fire signal is invalid, the low-power-consumption power supply control signal is valid, the monitoring system is in a low-power-consumption working mode, the triode Q2 is conducted, the wireless communication module is grounded, the voltage of the wireless communication module is reduced, the wireless communication module is in a standby working mode, and the power consumption of the wireless communication module is effectively reduced.
The specific embodiments are given above, but the present invention is not limited to the above-described embodiments. The basic idea of the present invention lies in the above basic scheme, and it is obvious to those skilled in the art that no creative effort is needed to design various modified models, formulas and parameters according to the teaching of the present invention. Variations, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention, and still fall within the scope of the invention.
Claims (10)
1. A low power consumption monitoring method is characterized by comprising the following steps:
when a total fire signal of the whole vehicle is detected, the CAN module is in a normal working state; and when the total fire signal of the whole vehicle is not detected, the CAN module is in a power-off state.
2. The low power consumption monitoring method according to claim 1, wherein the wireless communication module is in a normal operating state when a vehicle main fire signal is detected, and the wireless communication module is in a standby state when the vehicle main fire signal is not detected.
3. A low-power consumption monitoring system comprises a 24V storage battery, a master control module, a wireless communication module and a CAN module, wherein the 24V storage battery is connected with the master control module; the low-power-consumption control circuit of the CAN module comprises a first switch tube, the first switch tube is serially arranged in a power supply line of the CAN module, a control end of the first switch tube is connected with an output end of the main control module and used for receiving a total fire signal of the whole vehicle output by the main control module, and when the total fire signal of the whole vehicle is received, the first switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the first switching tube is controlled to be switched off.
4. The low-power consumption monitoring system according to claim 3, further comprising a wireless communication module low-power consumption control circuit, wherein the wireless communication module low-power consumption control circuit comprises a second switch tube, an input end and an output end of the second switch tube are connected in series in a starting loop of the wireless communication module, a control end of the second switch tube is connected with an output end of the main control module and used for receiving a whole vehicle total fire signal output by the main control module, and when the whole vehicle total fire signal is received, the second switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the second switching tube is controlled to be switched off.
5. The low-power consumption monitoring system according to claim 3, wherein an input end of the first switching tube is connected with the 24V storage battery, and an output end of the first switching tube is connected with a CAN module in the power supply circuit; the control end of the first switch tube is connected with the output end of the main control module through a first resistor, and the connection point of the control end of the first switch tube and the first resistor is connected with the 24V storage battery through a second resistor.
6. The monitoring system with low power consumption of claim 4, wherein an input end of the second switch tube is connected to the start port of the wireless communication module through a third resistor, and an output end of the second switch tube is grounded; the control end of the second switch tube is connected with the output end of the main control module through a fourth resistor, one end of the fourth resistor is grounded with the connection point of the control end of the second switch tube through a first capacitor, and one end of the fourth resistor is grounded with the connection point of the control end of the second switch tube through a fifth resistor.
7. The monitoring system with low power consumption of claim 6, wherein a second capacitor is connected in parallel between the input end and the output end of the second switch tube.
8. The monitoring system with low power consumption of claim 5 or 6, wherein the first switch tube and the second switch tube are both triodes.
9. A vehicle is characterized by comprising a low-power-consumption monitoring system, wherein the low-power-consumption monitoring system comprises a 24V storage battery, a master control module, a wireless communication module and a CAN module, and the 24V storage battery is connected with the master control module; the low-power-consumption control circuit of the CAN module comprises a first switch tube, the first switch tube is serially arranged in a power supply line of the CAN module, a control end of the first switch tube is connected with an output end of the main control module and used for receiving a total fire signal of the whole vehicle output by the main control module, and when the total fire signal of the whole vehicle is received, the first switch tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the first switching tube is controlled to be switched off.
10. The vehicle according to claim 9, further comprising a wireless communication module low power consumption control circuit, wherein the wireless communication module low power consumption control circuit comprises a second switching tube, an input end and an output end of the second switching tube are connected in series in a starting loop of the wireless communication module, a control end of the second switching tube is connected with an output end of the main control module and used for receiving a vehicle-mounted total fire signal output by the main control module, and when the vehicle-mounted total fire signal is received, the second switching tube is controlled to be conducted; and when the total fire signal of the whole vehicle is not received, the second switching tube is controlled to be switched off.
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| CN111038285B (en) | 2024-10-11 |
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