CN211786007U - Power monitoring device of online monitoring system - Google Patents
Power monitoring device of online monitoring system Download PDFInfo
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- CN211786007U CN211786007U CN201922461552.3U CN201922461552U CN211786007U CN 211786007 U CN211786007 U CN 211786007U CN 201922461552 U CN201922461552 U CN 201922461552U CN 211786007 U CN211786007 U CN 211786007U
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Abstract
The utility model relates to an on-line monitoring system power monitoring devices belongs to safety monitoring trade fields such as bridge tunnel, building construction. The monitoring device comprises a direct current power supply circuit, a lithium battery module and a power supply switching battery; the current detection module is connected with the direct current power supply circuit, the direct current power supply circuit and the lithium battery module are connected with the DTU transmission module through the power supply switching circuit, and the DTU transmission module is connected with the MCU processor; the current detection module is connected with the acquisition equipment, and the acquisition equipment is connected with the DTU transmission module. The utility model discloses a structure of above description realizes the monitoring of on-line monitoring system power and the diagnosis feedback function of trouble, finally can realize the diagnosis and the recognition function to the remote monitoring system operating mode, does benefit to the failure diagnosis and the acquisition of system.
Description
Technical Field
The utility model relates to an on-line monitoring system power monitoring devices belongs to safety monitoring trade fields such as bridge tunnel, building construction.
Background
In the on-line monitoring system project in the current structure safety monitoring industry, on-site mains supply is mostly used for supplying power, and modes such as centralized power supply and integration are carried out through monitoring designs of different monitoring items, and finally data remote transmission is carried out through a DTU (data transfer unit), wherein the mode is a basic implementation method.
In practical application, there is no effective method for identifying and acquiring the state of field power supply abnormality (such as power failure), once the power failure occurs, the system is interrupted by data, and the DTU is also immediately powered off and cannot work after the power failure occurs, so that the field condition information cannot be known remotely.
In summary, the conventional online monitoring system has no power supply information sensing and abnormal feedback functions, and therefore, there is a need for a device or an existing online system to have the power supply information identifying and feedback functions. The system can feed back the working condition information to the cloud within a period of time after power failure.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in the following several points: a) after the system is powered down, the power supply monitoring device and the DTU are not powered down, or are not powered down in a short period; b) the information difference before and after the power down needs to be sensed. Such as voltage level, triggering, etc.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a power supply monitoring device of an online monitoring system comprises a direct current power supply circuit, a lithium battery module and a power supply switching battery;
the current detection module is connected with the direct current power supply circuit, the direct current power supply circuit and the lithium battery module are connected with the DTU transmission module through the power supply switching circuit, and the DTU transmission module is connected with the MCU processor;
the current detection module is connected with the acquisition equipment, and the acquisition equipment is connected with the DTU transmission module.
Furthermore, the MCU processor is internally provided with an analog-to-digital converter and can measure the voltage value of power supply; the voltage range of the direct current power supply of the MCU processor is as follows: 11-13V, and the voltage range of the power supply of the lithium battery module is 6-8.4V.
Furthermore, the device realizes the detection of the working current of the acquisition equipment through the current detection module, and the MCU processor acquires the real-time voltage data and the current data and transmits the data through the DTU transmission module.
The utility model discloses mainly be the difference characteristic of the supply voltage who utilizes DC supply and lithium cell to and switching circuit realizes falling the stand-by power supply behind the electricity, realize the discernment of system's power supply kind, fall the system information diagnostic function behind the electricity. Finally, the device can realize the functions of judging the power supply state of the system and feeding back the information of the subsequent working conditions of power failure.
The utility model has the advantages that:
the utility model discloses a structure of above description realizes the monitoring of on-line monitoring system power and the diagnosis feedback function of trouble, finally can realize the diagnosis and the recognition function to the remote monitoring system operating mode, does benefit to the failure diagnosis and the acquisition of system.
Drawings
Fig. 1 is a schematic view of the structural connection of the present invention.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
A power supply monitoring device of an online monitoring system comprises a direct current power supply circuit 1, a lithium battery module 2 and a power supply switching circuit 4;
the current detection module 3 is connected with the direct current power supply circuit 1, the direct current power supply circuit 1 and the lithium battery module 2 are connected with the DTU transmission module 5 through the power supply switching circuit 4, and the DTU transmission module 5 is connected with the MCU processor 6;
the current detection module 3 is connected with the acquisition device 7, and the acquisition device 7 is connected with the DTU transmission module 5.
Further, the MCU processor 6 is internally provided with an analog-to-digital converter, and can measure a voltage value of the power supply; the voltage range of the dc supply of the MCU processor 6 is: 11-13V, and the voltage range of the power supply of the lithium battery module 2 is 6-8.4V.
Further, this device passes through current detection module 3 and realizes the detection to collection equipment 7 operating current, and MCU treater 6 gathers real-time voltage data, current data and transmits through DTU transmission module 5.
The working principle of the device is that the reference measuring point and the measured point are rigidly connected by a connecting rod with a fixed length, and an MEMS sensor is arranged in the middle of the connecting rod. The initial angle of the MEMS is zero or a fixed value at the initial position, when the measured point sinks or bulges, the connecting rod at the measured point end changes along with the initial angle of the MEMS, and the displacement change of the sinking or bulging can be calculated through the length and the angle change value of the connecting rod because the length of the connecting rod is fixed.
In order to realize the short-term power supply of the DTU and the monitoring device of the system after the system is powered off and complete the report of the working condition in the period, a standby lithium battery mode can be adopted. The power supply of the acquisition equipment is separated from the DTU and the monitoring device, and under the condition of commercial power, the system works through the commercial power and is charged through a battery; and under the condition that the commercial power is down, only DTU and monitoring device pass through the work of lithium cell power supply, and the purpose improves the duration of a journey of reserve lithium cell, only reports operating mode information to the greatest extent, and this function accessible diode is built or the gate circuit is realized.
In order to realize the perception of power failure information, the power supply difference under two states can be measured for identification, wherein the difference of voltages can be distinguished, and the basic principle is as follows: the voltage range of the direct current power supply (including the power supply of a switching power supply, the power supply of solar energy and the like) is as follows: 11~13V, and the voltage range of lithium cell power supply is 6~8.4V, therefore accessible power monitoring device measures the supply voltage, corresponds the interval and carries out the discernment of state. And the battery voltage is different from the battery capacity, and the electric quantity of the lithium battery can be judged through the voltage difference.
On the premise of monitoring the power supply state of the system and the electric quantity of the battery, in order to obtain more system working condition information, the power supply monitoring device can also be added with a current monitoring function, measure the working total current of the acquisition equipment in the system according to the 1Hz sampling rate, and obtain the maximum value and the minimum value in a unit acquisition granularity period to upload data.
The device comprises a direct current power supply circuit, a lithium battery module and a power supply switching circuit, and can realize the automatic switching function of two types of power supplies. The system is designed with an MCU processor, in which the function of an analog-to-digital converter is built. The voltage value of the power supply may be measured. The basic principle is as follows: the voltage range of the direct current power supply (including the power supply of a switching power supply, the power supply of solar energy and the like) is as follows: 11~13V, and the voltage range of lithium cell power supply is 6~8.4V, therefore accessible power monitoring device measures the supply voltage, corresponds the interval and carries out the discernment of state. The system is provided with a current detection module, and the detection function of the working current of other working equipment can be realized through the current detection module. The MCU processor collects the real-time voltage data and the current data and transmits and reports the real-time voltage data and the current data through the DTU transmission module.
The power monitoring device is only used as a power monitoring device, and the remote information perception can be realized only by the data transmission function of the DTU, so that the DTU is needed to be matched for use, and the DTU can normally transmit data. The power monitoring device is used as a device for RS485 output, the communication protocol of the power monitoring device is consistent with that of products such as the existing inclinometer, and therefore the cloud end needs to be added with the equipment in project configuration to serve as a measurement parameter. Within one acquisition granularity, monitoring data is acquired through an RS485 instruction.
Because the device adopts reserve lithium cell power supply after the commercial power falls down, its duration is at 8H, for the report that improves the operating mode, when lithium cell electric quantity more than 50%, reports according to the collection granularity of high in the clouds configuration. And when the electric quantity of the battery is lower than 50%, the monitoring equipment automatically switches to upload monitoring data according to the granularity of 5 min. Therefore, the cloud is required to support the function of checking the bus data log, and the working condition information is acquired through the key byte information. And after the system power supply is recovered, automatically stopping switching the power supply state.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (3)
1. The utility model provides an on-line monitoring system power monitoring devices which characterized in that: the monitoring device comprises a direct current power supply circuit (1), a lithium battery module (2) and a power supply switching circuit (4);
the current detection module (3) is connected with the direct current power supply circuit (1), the direct current power supply circuit (1) and the lithium battery module (2) are connected with the DTU transmission module (5) through the power supply switching circuit (4), and the DTU transmission module (5) is connected with the MCU processor (6);
the current detection module (3) is connected with the acquisition equipment (7), and the acquisition equipment (7) is connected with the DTU transmission module (5).
2. The on-line monitoring system power monitoring device of claim 1, wherein: the MCU processor (6) is internally provided with an analog-to-digital converter and can measure the voltage value of power supply; the voltage range of the direct current power supply of the MCU processor (6) is as follows: 11-13V, and the voltage range of the power supply of the lithium battery module (2) is 6-8.4V.
3. The on-line monitoring system power monitoring device of claim 1, wherein: the device realizes the detection of the working current of the acquisition equipment (7) through the current detection module (3), and the MCU processor (6) acquires real-time voltage data and current data and transmits the data through the DTU transmission module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461552.3U CN211786007U (en) | 2019-12-31 | 2019-12-31 | Power monitoring device of online monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922461552.3U CN211786007U (en) | 2019-12-31 | 2019-12-31 | Power monitoring device of online monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211786007U true CN211786007U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922461552.3U Active CN211786007U (en) | 2019-12-31 | 2019-12-31 | Power monitoring device of online monitoring system |
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|---|---|
| CN (1) | CN211786007U (en) |
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2019
- 2019-12-31 CN CN201922461552.3U patent/CN211786007U/en active Active
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