CN217213463U - Power supply monitoring control system - Google Patents
Power supply monitoring control system Download PDFInfo
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- CN217213463U CN217213463U CN202121924572.0U CN202121924572U CN217213463U CN 217213463 U CN217213463 U CN 217213463U CN 202121924572 U CN202121924572 U CN 202121924572U CN 217213463 U CN217213463 U CN 217213463U
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Abstract
The utility model discloses a power monitoring control system, include: the device comprises a controller, a power supply and reset circuit, a communication circuit, a sampling gating switching circuit and a sampling public channel, wherein the power supply and reset circuit, the communication circuit, the sampling gating switching circuit and the sampling public channel are respectively and electrically connected with the controller; the power supply and reset circuit is used for supplying power to the power supply monitoring and control system and resetting the controller; the sampling gating switching circuit is electrically connected to the sampling public channel and used for transmitting the multi-channel power supply monitoring information acquired in real time to the controller after being processed by the sampling public channel; the communication circuit is used for transmitting and displaying the power supply monitoring information sent by the controller at a user side. The problem that the existing power supply monitoring and controlling system cannot monitor and quantize the power supply state information in real time can be solved.
Description
Technical Field
The utility model relates to an automatic control technical field especially involves a power monitoring control system.
Background
In the vehicle-mounted system, the power supply is used as the power of the system, and the state of the power supply is related to whether the vehicle-mounted system can normally operate. At present, power supply monitoring is only realized through simple state indication, real-time monitoring and quantification of the power supply state are lacked, powerful data support is lacked for system fault elimination, and the difficulty of the system fault elimination is increased to a certain extent.
Disclosure of Invention
Defect or improvement demand more than to prior art, the utility model provides a power monitoring control system, it can solve the unable problem to power state information real-time supervision and quantization of current power monitoring control system.
Specifically, the embodiment of the utility model provides a power monitoring control system, include: the device comprises a controller, a power supply and reset circuit, a communication circuit, a sampling gating switching circuit and a sampling common channel, wherein the power supply and reset circuit, the communication circuit, the sampling gating switching circuit and the sampling common channel are respectively and electrically connected with the controller; the power supply and reset circuit is used for supplying power to the power supply monitoring and control system and resetting the controller; the sampling gating switching circuit is electrically connected to the sampling public channel and used for transmitting the multi-channel power supply monitoring information acquired in real time to the controller after being processed by the sampling public channel; the communication circuit is used for transmitting and displaying the power supply monitoring information sent by the controller at a user side.
In an embodiment of the present invention, the power supply and reset circuit includes: the controller comprises a first power supply module, a second power supply module and a third power supply module, wherein the first power supply module converts input voltage into circuit voltage, the second power supply module converts the input voltage into output voltage, and the third power supply module converts the circuit voltage into electrifying voltage of the controller.
In an embodiment of the present invention, the power monitoring and controlling system further includes: and the display and alarm circuit is electrically connected to the controller and comprises a display and alarm equipment, wherein the display is used for displaying the power supply monitoring information in a local control state, and the alarm equipment is used for giving an alarm when the power supply monitoring information is abnormal.
In an embodiment of the present invention, the communication circuit includes: CAN communication circuit and RS485 communication circuit, CAN communication circuit connect in between controller and the host computer, be used for with power monitoring information send to the host computer, RS485 communication circuit connect in the controller with between demonstration and the warning circuit, be used for with power monitoring information shows in the display.
The utility model discloses an in an embodiment, CAN communication circuit includes CAN transceiver and CAN isolation power, CAN transceiver communication connection in the host computer with between the controller, be used for with power monitoring information send to host computer and receipt the control command of host computer, CAN isolation power electricity is connected to the CAN transceiver with power supply and reset circuit.
In an embodiment of the present invention, the RS485 communication circuit includes: RS485 transceiver and RS485 keep apart the power, adopt half-duplex communication mode will power monitoring information transmission extremely the display shows and transmits the control command of controller is used for controlling alarm equipment sends out the police dispatch newspaper.
In an embodiment of the present invention, the power monitoring and controlling system further includes: and the data storage circuit is electrically connected to the controller and comprises a nonvolatile memory for storing the power supply monitoring information at regular time.
In an embodiment of the present invention, the power monitoring and controlling system further includes: and the leakage detection circuit is electrically connected with the controller and the sampling public channel and comprises a voltage gating switching module for switching multi-path detection voltage to acquire corresponding leakage detection information.
In an embodiment of the present invention, the sampling common channel includes: the first operational amplifier and the second operational amplifier are respectively and electrically connected to the sampling gating switching circuit and the leak detection circuit and used for sending the power supply monitoring information and the leak detection information to the controller after operation processing, and the isolation amplifier is electrically connected to the first operational amplifier and the second operational amplifier and the controller.
In an embodiment of the present invention, the power monitoring and controlling system further includes: the analog-to-digital conversion circuit is electrically connected between the controller and the sampling public channel, and comprises a successive approximation type analog-to-digital conversion chip with a 12-bit parallel microcomputer interface, wherein the model number of the successive approximation type analog-to-digital conversion chip is AD1674 ARZ.
It can be known from the above, through the above-mentioned scheme that the utility model conceived compares with prior art, can have one or more following beneficial effect: by adopting the modularized and universal circuit design, the multi-path power supply monitoring information acquired by the sampling gating switching circuit can be displayed on a display screen in a local control state or displayed on an upper computer in a remote control state in real time, and a plurality of power supply state information can be quantized and monitored in real time at the same time; whether in the local control state or the remote control state, the information interaction amount is large, the interaction modes are multiple, the interaction capacity is strong, related circuits can be selectively used according to actual needs, and certain popularization is achieved; the leakage detection circuit comprises a voltage gating switching module which is shared when multi-channel voltage detection is carried out, so that the accuracy of multi-channel voltage detection is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power monitoring and control system provided in an embodiment of the present invention;
fig. 2a to fig. 2c are schematic structural diagrams of a part of the power supply and reset circuit provided in the embodiment of the present invention;
fig. 3a to fig. 3e are schematic structural diagrams of a part of a CAN communication circuit provided in an embodiment of the present invention;
fig. 4a to fig. 4b are schematic structural diagrams of a part of an RS485 communication circuit provided in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a leak detection circuit provided in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a sampling common channel provided by an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without creative work shall belong to the protection scope of the present invention.
It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the method is simple. The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, an embodiment of the present invention provides a power monitoring and controlling system, for example, including: the device comprises a controller 11, and a power supply and reset circuit 12, a communication circuit 13, a sampling gating switching circuit 14 and a sampling common channel 15 which are respectively electrically connected with the controller 11.
The controller mentioned herein is, for example, a DSP (Digital signal processor), an FPGA (Programmable logic device), an ARM (Advanced RISC microprocessor), an SoC (System on Chip), and the like, in this embodiment, for example, a DSP controller of a model TMS320F28335 is adopted, and of course, a controller of another model may also be adopted in other embodiments, which is not limited by the present invention.
The power supply and reset circuit 12 is used for supplying power to the power supply monitoring and control system and resetting the controller 11; the sampling gating switching circuit 14 is electrically connected to the sampling common channel 15, and is configured to transmit the multiple paths of power supply monitoring information acquired in real time, such as power supply state information of input voltage, output voltage, temperature, and the like, to the controller 11 after signal amplification and other processing is performed on the multiple paths of power supply monitoring information through the sampling common channel 15; the communication circuit 13 is used for transmitting and displaying the power monitoring information sent by the controller 11 to the user terminal.
Further, as shown in fig. 2a and 2b, the power supply and reset circuit 12 includes, for example: the power supply module comprises a first power supply module N1, a second power supply module N2 and a third power supply module N3, wherein the first power supply module N1 converts an input voltage into a circuit voltage, for example, a mature power supply module WK312805S-04I is adopted, and a 28V input voltage is converted into a 5V circuit working voltage, the second power supply module N2 converts a 28V input voltage into a +/-15V output voltage for driving external equipment to operate, for example, a mature power supply module WK312815D-04I is adopted, and the third power supply module N3 is connected with the first power supply module, and converts a 5V circuit voltage into a 3.3V voltage and a 1.9V voltage required by a DSP controller, for example, a power supply chip of the power supply module adopts 70TPS 302 of TI company, and can complete the functions of outputting 1.9V first and outputting after 3.3V as required, so as to meet the design requirements of DSP power-on. As shown in fig. 2c, the power and reset circuit 12 further comprises a block N4 for resetting the controller 11.
Further, the power monitoring and control system further includes, for example: and the display and alarm circuit 16 is electrically connected to the controller 11 and comprises a display and an alarm device, wherein the display is used for displaying the power monitoring information in a local control state, and the alarm device is a signal indicator lamp or an alarm bell and the like and is used for performing sound and light alarm when the power monitoring information is abnormal.
Further, the communication circuit 13 includes, for example: a CAN (Controller Area Network) communication circuit 131 and an RS485 communication circuit 132, wherein the CAN communication circuit 131 is connected between the Controller 11 and the upper computer, and is used for sending the power monitoring information of the Controller 11 to the upper computer, and the RS485 communication circuit 132 is connected between the Controller 11 and the display and alarm circuit 16, and is used for displaying the power monitoring information of the Controller 11 on the display.
Further, as shown in fig. 3a to 3e, the CAN communication circuit 131 includes, for example, a CAN transceiver and a CAN isolation power supply, the DSP controller 11 has, for example, two CAN controllers, and two corresponding CAN transceiver models are, for example, SM1040, and are in communication connection between the upper computer and the DSP controller 11, and are configured to send the power supply monitoring information to the upper computer and receive the control instruction issued by the upper computer. The DSP controller 11 is, for example, additionally provided with a controller of model SMSJA1000CN for redundancy design, and uses a chip of model HRGD21M with a micro-huaxin core to realize the isolation of CAN communication signals, thereby improving the reliability of communication. The CAN isolation power supply is DPT2-K5S5F and is electrically connected to the CAN transceiver and the power supply and reset circuit 12, 5V circuit voltage is converted into isolated 5V voltage to provide electric energy for the CAN transceiver, and the circuit module is guaranteed to work independently and not to be interfered.
Further, as shown in fig. 4a and 4b, the RS485 communication circuit 132 includes, for example: RS485 transceiver and RS485 keep apart the power, RS485 transceiver for example adopts half-duplex communication mode for with power monitoring information sends to the display shows to and transmission controller 11's control command to showing and warning circuit 16, be used for controlling alarm device sends out the police dispatch newspaper.
Further, the power supply monitoring and control system, for example, further includes: the data storage circuit 17, electrically connected to the controller 11, for example, includes an external nonvolatile memory for storing the power monitoring information periodically. Generally, when a system fails, the system is shut down, which causes great difficulty in troubleshooting, and a lot of state data cannot be known, and by storing the state information of the system for a certain period of time, when the system fails, the system can be troubled by reading the data information in the data storage circuit 11.
Further, the power monitoring and control system further includes, for example: leak detection circuitry 18 is electrically connected to controller 11 and sampling common 15, and leak detection circuitry 18 includes, for example, a voltage gated switching module for switching multiple detection voltages to obtain corresponding leak detection information. Specifically, as shown in fig. 5, JK is a casing signal, and is connected to a casing of an actual system through a cable, and the leak detection specific implementation process includes: the first step is as follows: on the premise of ensuring that all the voltage gating switching circuits are disconnected, closing the relay K2H, adopting a zero value Z0, and then disconnecting K2H; the second step: gating one path of voltage through a voltage gating switching circuit, wherein the voltage value V0 at the moment is sampled; the third step: the relays K2B and K2D are closed, the resistors R103 and R104 are connected into the circuit, the structure of the original circuit is changed, the JL + is connected with the system shell through the R104, the voltage value V1 at the moment is sampled, and then the relays K2B and K2D are disconnected; the fourth step: the relays K2B, K2D and K2F are closed, the resistor R103 is connected into the circuit, the structure of the original circuit is changed, the JL-is connected with the system shell through the R103, the voltage value V2 at the moment is sampled, and then the relays K2B, K2D and K2F are opened. Therefore, the leak detection circuit 18 can realize circuit switching of a positive leak state, a negative leak state and a zero state of the detection voltage, because the detection voltage is multipath and parameters of different devices have deviation, the zero position is calibrated before any leak detection is started, the sampled zero value is used as a reference value, and the positive leak and the negative leak are sampled after the zero position sampling is completed, so that the detection accuracy and the detection correctness can be ensured.
Further, as shown in fig. 6, the sampling common channel 15 includes, for example: the circuit comprises a first operational amplifier N3, a second operational amplifier N1 and an isolation amplifier N2, wherein the first operational amplifier N3 and the second operational amplifier N1 are respectively and electrically connected to a sampling gating switching circuit 14 and the leakage detection circuit 18 and used for carrying out operational amplification and other processing on the power supply monitoring information and the leakage detection information and then sending the processed information to a controller 11, and an isolation amplifier N2 is respectively and electrically connected to a first operational amplifier N3, a second operational amplifier N1 and the controller 11, so that the input voltage of the circuit is completely isolated from the voltage between the controller 11.
Further, the power supply monitoring and control system, for example, further includes: the analog-to-digital conversion circuit is electrically connected between the controller 11 and the sampling common channel 15, and may adopt an AD (analog-to-digital conversion) chip carried by the DSP controller 11 itself, or the DSP controller 11 may extend an AD chip, for example, a successive approximation type analog-to-digital conversion chip with a 12-bit parallel microcomputer interface, whose type is AD1674 ARZ.
To sum up, the power monitoring control system provided by the embodiment of the present invention, through adopting the modularized and universal circuit design, the multi-path power monitoring information obtained by the sampling gating switching circuit can be displayed on the display screen under the local control state or displayed on the upper computer under the remote control state in real time, and can simultaneously quantify and monitor a plurality of power state information in real time; whether in a local control state or a remote control state, the information interaction amount is large, the interaction modes are multiple, the interaction capacity is strong, related circuits can be selectively used according to actual needs, and the method has certain popularization; the leakage detection circuit comprises a voltage gating switching module which is shared during multi-channel voltage detection time division, so that the accuracy of multi-channel voltage detection is ensured.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (4)
1. A power monitoring and control system, comprising:
the device comprises a controller, a power supply and reset circuit, a communication circuit, a sampling gating switching circuit and a sampling public channel, wherein the power supply and reset circuit, the communication circuit, the sampling gating switching circuit and the sampling public channel are respectively and electrically connected with the controller;
the power supply and reset circuit is used for supplying power to the power supply monitoring and control system and resetting the controller; the sampling gating switching circuit is electrically connected to the sampling public channel and used for transmitting the multi-channel power supply monitoring information acquired in real time to the controller after being processed by the sampling public channel; the communication circuit is used for transmitting and displaying the power supply monitoring information sent by the controller at a user side;
the power monitoring control system further comprises: the display and alarm circuit is electrically connected to the controller and comprises a display and alarm equipment, wherein the display is used for displaying the power supply monitoring information in a local control state, and the alarm equipment is used for giving an alarm when the power supply monitoring information is abnormal;
the communication circuit includes: the CAN communication circuit is connected between the controller and an upper computer and used for sending the power monitoring information to the upper computer, and the RS485 communication circuit is connected between the controller and the display and alarm circuit and used for displaying the power monitoring information on the display;
the CAN communication circuit comprises a CAN transceiver and a CAN isolation power supply, the CAN transceiver is in communication connection between the upper computer and the controller and is used for sending the power supply monitoring information to the upper computer and receiving a control instruction of the upper computer, and the CAN isolation power supply is electrically connected to the CAN transceiver and the power supply and reset circuit;
the power monitoring control system further comprises: the leakage detection circuit is electrically connected to the controller and the sampling public channel, and comprises a voltage gating switching module for switching multi-path detection voltage to obtain corresponding leakage detection information;
the sampling common channel includes: the first operational amplifier and the second operational amplifier are respectively electrically connected to the sampling gating switching circuit and the leak detection circuit and are used for sending the power supply monitoring information and the leak detection information to the controller after operation processing, and the isolation amplifier is electrically connected to the first operational amplifier, the second operational amplifier and the controller;
and the analog-to-digital conversion circuit is electrically connected between the controller and the sampling public channel and comprises a successive approximation type analog-to-digital conversion chip with a 12-bit parallel microcomputer interface.
2. The power monitoring control system of claim 1, wherein the power and reset circuit comprises: the controller comprises a first power supply module, a second power supply module and a third power supply module, wherein the first power supply module converts input voltage into circuit voltage, the second power supply module converts the input voltage into output voltage, and the third power supply module converts the circuit voltage into electrifying voltage of the controller.
3. The power monitoring and control system of claim 1, wherein the RS485 communication circuit comprises: RS485 transceiver and RS485 keep apart the power, adopt half-duplex communication mode will power monitoring information transmission extremely the display shows and transmits the control command of controller is used for controlling alarm equipment sends out the police dispatch newspaper.
4. The power monitoring control system of claim 1, further comprising: and the data storage circuit is electrically connected to the controller and comprises a nonvolatile memory for storing the power supply monitoring information at regular time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121924572.0U CN217213463U (en) | 2021-08-17 | 2021-08-17 | Power supply monitoring control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121924572.0U CN217213463U (en) | 2021-08-17 | 2021-08-17 | Power supply monitoring control system |
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| CN217213463U true CN217213463U (en) | 2022-08-16 |
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| CN202121924572.0U Active CN217213463U (en) | 2021-08-17 | 2021-08-17 | Power supply monitoring control system |
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