CN212058876U - Grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission - Google Patents

Abstract

The utility model provides a grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission, which comprises a grounding circulation monitoring host A, a current transformer a, a temperature sensor B, a vibration sensor C, an acousto-optic alarm module B and a 4G high-speed wireless transmission module C; the three current transformers a are respectively arranged on A, B, C three-phase cable middle joint grounding wires, the three temperature sensors B are respectively arranged on A, B, C three-phase cable middle joint grounding wires, the four vibration sensors c are respectively arranged on A, B, C three-phase cable middle joint grounding wires and grounding wires, and the sound-light alarm module B is arranged beside the grounding circulation monitoring host A. The utility model discloses have initiative theftproof function, prevent the stolen circumstances of cutting of earth connection or ground wire to low in manufacturing cost, small, easily integration.

Description

Grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission

Technical Field

The utility model relates to a cable body monitoring technology field, in particular to ground connection circulation on-line monitoring system with initiative theftproof and high-speed wireless transmission.

Background

In recent years, the economy of China continues to increase, the urban power grid develops rapidly, and the requirements of modern society on power supply safety and reliability are increasingly highlighted. The power cable is the most important part in the power supply link of a power grid, belongs to national important infrastructure facilities, plays an important role in promoting the social and economic development of China, and is always important to the safe operation. Meanwhile, the cable laid in the early stage is continuously used for a normal service life, the insulation problem of the cable is increasingly aggravated, and more than 90% of the problem of the power cable is solved at the position of the middle joint according to statistics. In addition, due to insufficient artificial supervision, the situation that the grounding wire of the power cable is artificially stolen and cut occurs occasionally, and the damage of the grounding system of the high-voltage cable can lead the sheath to bear high voltage for a long time, so that the service life of the cable is greatly reduced, and the occurrence rate of high-voltage cable accidents is greatly improved. Therefore, a complete cable performance monitoring system is required for the power system, and particularly, the position of the middle joint of the cable is monitored.

There are many on-line monitoring devices for ground circulation monitoring the performance of cable intermediate joint position in the market, but most of them transmit data in wired transmission mode or wireless transmission mode with low speed. When the data is transmitted in a wired mode, communication cables need to be laid on the implementation site, so that the construction cost is greatly increased, and the project construction period is prolonged; when the wireless transmission mode is adopted, a wireless transmission system is basically formed by the UART of the MCU A1 and the wireless communication module, and the mode greatly limits the data transmission rate and has extremely low efficiency. In addition, the existing monitoring device basically has no active anti-theft function, cannot effectively protect the power cable intermediate joint, and has large volume and high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The purpose of the present invention is to solve at least one of the technical drawbacks.

Therefore, the utility model aims at providing a ground connection circulation on-line monitoring system with initiative theftproof and high-speed wireless transmission has initiative theftproof function, prevents the stolen condition of cutting of earth connection or ground wire to low in manufacturing cost, small, easily integration.

In order to achieve the above object, the utility model provides a grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission, which comprises a grounding circulation monitoring host, a current transformer, a temperature sensor, a vibration sensor, an acousto-optic alarm module and a 4G high-speed wireless transmission module; the grounding circulation monitoring host is arranged near a grounding wire of a middle joint of the power cable, and is provided with three current transformers which are respectively arranged on a grounding wire of a middle joint of an A, B, C three-phase cable and connected with the grounding circulation monitoring host through connectors; the grounding circulation monitoring host is provided with three temperature sensors, the three temperature sensors are respectively arranged on the A, B, C three-phase cable intermediate joint grounding wire and are connected with the grounding circulation monitoring host through connectors; the grounding circulation monitoring host A is provided with four vibration sensors which are respectively arranged on a grounding wire and a grounding wire of an intermediate joint of an A, B, C three-phase cable and are connected with the grounding circulation monitoring host through connectors; the sound and light alarm modules are arranged beside the grounding circulation monitoring host and are placed in the anti-disassembly junction box together, and the grounding circulation monitoring host is provided with the sound and light alarm modules which are connected with the grounding circulation monitoring host through signal lines. The 4G high-speed wireless transmission module is arranged beside the grounding circulation monitoring host and is placed in the anti-dismantling junction control box together, and each grounding circulation monitoring host is provided with one 4G high-speed wireless transmission module which is connected with the grounding circulation monitoring host through a connector.

In any of the above aspects, it is preferable that the number of the ground circulation monitoring main units is plural, and each ground circulation monitoring main unit is installed at a ground line of each power cable intermediate joint.

In any of the above schemes, preferably, the current transformer is of a snap-in structure, and during installation, the mechanical snap is opened, sleeved on the grounding cable, and then the mechanical snap is closed.

In any of the above schemes, preferably, the temperature sensor is a structure in which a signal line is connected with a metal temperature probe, when the temperature sensor is installed, the metal temperature probe is placed on a grounding cable, the temperature probe is attached to the grounding cable by using heat-conducting silicone grease and isolated from the ambient temperature, and finally, the outermost layer is wrapped by using a special fireproof blanket.

In any of the above schemes, preferably, the vibration sensor is a structure in which a signal wire is connected with a metal vibration probe, and when the vibration sensor is installed, the metal vibration probe is placed on a grounding cable, and then the outermost layer is wrapped by a special fireproof blanket; when the real-time fire blanket is wrapped, the temperature sensor and the vibration sensor can be wrapped together.

In any of the above schemes, preferably, the ground circulating current monitoring host includes an electric energy quality chip, an MCU, an acousto-optic alarm module power control circuit, a temperature detection dedicated circuit, and a vibration detection isolation circuit, the electric energy quality chip is connected with three current transformers respectively, the electric energy quality chip is further connected with the MCU, the MCU is connected with the acousto-optic alarm module power control circuit, the temperature detection dedicated circuit, and the vibration detection isolation circuit, the temperature detection dedicated circuit is connected with three temperature sensors, the vibration detection isolation circuit is connected with four vibration sensors, the acousto-optic alarm module power control circuit is connected with the acousto-optic alarm module, and the MCU is further connected with a 4G high-speed wireless transmission module.

In any of the above schemes, preferably, the MCU is of a STM32F103VCT6 type.

In any of the above schemes, preferably, the power quality chip is further connected to the crystal oscillator circuit and the three current transformer protection circuits, each current transformer protection circuit includes a pull-up resistor, a ground capacitor, and a protection resistor, the power quality chip is connected to the current transformer through the protection resistor, and the power quality chip is further connected to the pull-up resistor and the ground capacitor, respectively.

In any of the above schemes, the power quality chip a2 is preferably a chip of ATT7022EU type.

In any of the above schemes, preferably, the 4G high-speed wireless transmission module is further in remote communication with an external remote background; the 4G high-speed wireless transmission module is a multi-mode 4G module and at least supports high-speed access of 2G, 3G and 4G networks of any one of mobile, communication and telecommunication; the SMS short message receiving and sending and short message configuration functions are supported; supporting a USIM card, an APN special card and an Internet of things card of the mobile phone; supporting FOTA differential upgrade; supporting FTP other upgrades.

The utility model also provides a monitoring method based on foretell have initiative theftproof and high-speed wireless transmission's online monitoring system of ground connection circulation, including following step:

step S1, after the system is powered on, the grounding circulation monitoring host, the sound-light alarm module and the 4G high-speed wireless transmission module perform power-on self-detection;

step S2, the grounding circulation monitoring host machine acquires current data of three current transformers respectively arranged on connecting wires of the middle joints of A, B, C three-phase cables through a power quality chip, acquires temperature data of three temperature sensors respectively arranged on connecting wires of the middle joints of A, B, C three-phase cables through a special temperature detection circuit, and acquires state data of four vibration sensors respectively arranged on connecting wires of the middle joints of A, B, C three-phase cables and a ground wire through a vibration detection isolation circuit;

step S3, the grounding circulation monitoring host machine compares the acquired data with the user parameters, if the data exceeds the set threshold, the grounding circulation monitoring host machine generates alarm information immediately and gives an alarm;

step S4, the grounding circulation monitoring host compares the acquired data with the user parameters, if the data does not exceed the set threshold, no alarm information is generated, but the real-time data is stored in the local memory;

step S5, after the grounded loop current monitoring host receives the request instruction from the remote background through the 4G high-speed transmission module, the data is verified and analyzed according to the protocol, and then corresponding action is taken according to the specific instruction.

In any of the above schemes, preferably, in step S3, there are three types of alarms, one is that the current is abnormal, and when the detected current value exceeds the threshold set by the user, the abnormal state is actively reported to the remote background through the 4G high-speed wireless transmission module, and the field responsible person is notified of the abnormal state by a short message; secondly, temperature is abnormal, when the detected temperature value exceeds a threshold value set by a user, an abnormal state is actively reported to a remote background through a 4G high-speed wireless transmission module, and field responsible personnel are informed of checking the abnormal state in the field through short messages; thirdly, vibration is abnormal, when the state data of the vibration sensor is detected to exceed a threshold set by a user, the abnormal state is actively reported to a far-end background through a 4G high-speed wireless transmission module, field responsible personnel are informed of checking the abnormal state in the field through short messages, and meanwhile, an audible and visual alarm module is started to warn a thief; when any abnormality occurs, real-time data and alarm information when an alarm occurs are stored in the local memory at the same time of alarming.

The utility model discloses a ground connection circulation on-line monitoring system with initiative theftproof and high-speed wireless transmission has following beneficial effect:

1. the utility model discloses a wired communication mode of the high-speed wireless transmission mode replacement of 4G, greatly reduced the site operation degree of difficulty and construction cost, shortened project implementation cycle.

2. The utility model discloses replace ordinary wireless communication mode with the high-speed wireless transmission mode of 4G, improved data transmission's efficiency greatly, promoted the real-time.

3. The utility model discloses with vibration sensor, audible-visual alarm module, the high-speed wireless transmission module of 4G and prevent tearing open the mode of converging the accuse case, realized an initiative theftproof function, prevent the stolen condition of cutting of earth connection or ground wire.

4. The utility model discloses small, low in manufacturing cost adopts the modular structure, falls into a plurality of little independence, the module of interact with whole circuit structure, dismantlement, recovery and processing after convenient reuse, upgrading, maintenance and product abandonment.

5. The utility model discloses a protect current transformer, and set up current transformer protection circuit to current transformer's life has been prolonged.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a block diagram of the grounding loop current monitoring host according to the present invention;

fig. 3 is a schematic view of the installation of the sensor of the present invention on a ground cable;

FIG. 4 is a schematic circuit diagram of the MCU of the present invention;

fig. 5 is a schematic circuit diagram of the power quality chip of the present invention;

fig. 6 is a flow chart of the operation of the system of the present invention;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The utility model provides a grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission, as shown in fig. 1-3, comprising a grounding circulation monitoring host A, a current transformer a, a temperature sensor B, a vibration sensor C, an acousto-optic alarm module B and a 4G high-speed wireless transmission module C; the grounding circulation monitoring host A is arranged near a grounding wire of a middle joint of a power cable, the grounding circulation monitoring host A is provided with three current transformers a, the three current transformers a are respectively arranged on A, B, C three-phase cable middle joint grounding wires, and the three current transformers a are connected with the grounding circulation monitoring host A through connectors; the grounding circulation monitoring host A is provided with three temperature sensors b, the three temperature sensors b are respectively installed on A, B, C three-phase cable intermediate joint grounding wires, and the three temperature sensors b are connected with the grounding circulation monitoring host A through connectors; the grounding circulation monitoring host A is provided with four vibration sensors c which are respectively arranged on a grounding wire and a grounding wire of an intermediate joint of an A, B, C three-phase cable and are connected with the grounding circulation monitoring host A through connectors; the sound and light alarm modules B are arranged beside the grounding circulation monitoring host A and are placed in the anti-disassembly junction box E together, and the grounding circulation monitoring host A is provided with the sound and light alarm modules B which are connected with the grounding circulation monitoring host A through signal lines. The 4G high-speed wireless transmission module C is installed beside the grounding circulation monitoring host A and is placed inside the disassembly-prevention convergence control box E together, and each grounding circulation monitoring host A is provided with one 4G high-speed wireless transmission module C which is connected with the grounding circulation monitoring host A through a connector.

When the grounding circulation monitoring host machine A works, current data of three current transformers respectively arranged on A, B, C three-phase cable intermediate connector connecting wires are obtained through a power quality chip, temperature data of three temperature sensors respectively arranged on A, B, C three-phase cable intermediate connector connecting wires are obtained through a special temperature detection circuit, and state data of four vibration sensors respectively arranged on A, B, C three-phase cable intermediate connector connecting wires and a ground wire are obtained through a vibration detection isolation circuit; and comparing the acquired data with the user parameters, and if the data exceeds a set threshold, generating alarm information immediately and giving an alarm.

The current transformer a mainly has the function of converting large primary side current into small secondary side current as a signal which can be processed by the grounding circulation monitoring host A. The rated capacity is 10VA, the rated voltage is 3KV, the accuracy is 0.1 grade, and the transformation ratio is 500:1 or 1000: 1.

The temperature sensor b is a three-wire system PT 1000. The three-wire system PT1000 is matched with a signal processing circuit of the grounding circulation on-line monitoring system for use, so that the influence of lead resistance can be better eliminated. The temperature detection range is-70 ℃ to 500 ℃, and the precision is 0.1. When the temperature sensor b is installed, the metal probe is wrapped on the grounding wire of the power cable intermediate joint by adopting heat-conducting silicone grease, and the metal probe is isolated from the ambient temperature, so that the accuracy of temperature acquisition is ensured.

The main function of the vibration sensor c is to detect A, B, C whether the three-phase cable intermediate head connecting wire and the ground wire itself is stolen or not, when the stealing and cutting alarm occurs, the vibration sensor reverses the level of the output signal and outputs the signal to the vibration detection isolation circuit, and then the vibration detection isolation circuit transmits the detection signal to the MCU. The speed measurement is 0-200mm/s, the displacement is 0-2000um, the acceleration measurement is 0-50g, the speed and displacement frequency response is 10-1000Hz, the acceleration frequency response is 2-2000Hz, and the precision is 5%.

The sound-light alarm module B is an alarm integrating voice and an alarm lamp, the power of the whole alarm is 23W, the working voltage can be DC 12V/24V or AC 220V/380V, the decibel of a loudspeaker is 110dB, the color of the alarm lamp can be selected, and the alarm tone is public security and supports voice setting.

The 4G high-speed wireless transmission module is also in remote communication with an external far-end background; the 4G high-speed wireless transmission module is a multi-mode 4G module and at least supports high-speed access of 2G, 3G and 4G networks of any one of mobile, communication and telecommunication; the SMS short message receiving and sending and short message configuration functions are supported; supporting a USIM card, an APN special card and an Internet of things card of the mobile phone; supporting FOTA differential upgrade; supporting FTP other upgrades.

The grounding circulation monitoring host A mainly has the functions of signal processing, abnormity alarming, active burglary prevention, data storage, parameter configuration and wireless communication.

1) Signal processing: the signals to be processed include four signals, namely a signal of a current transformer a, a signal of a temperature sensor b, a signal of a vibration sensor C and data of a wireless transmission module C. Current transformer a signal processing unit comprises a special measurement chip A2 of multi-functional high accuracy three-phase electric energy and MCU A1 two parts, adopts SPI to communicate between the two, and current transformer a's input signal is connected to special measurement chip A2 of three-phase electric energy behind preceding stage isolation circuit, and this chip can accurately calculate input current value to give MCU A1 with data transfer through the SPI interface. The signal processing unit of the temperature sensor b consists of a special circuit A4 and an MCU A1, the input signal of the temperature sensor b is isolated by the special circuit, is subjected to differential amplification, is converted into an analog signal which can be identified by the MCU A1, and is subjected to AD conversion to calculate a temperature value. The signal processing unit of the vibration sensor c consists of an isolation circuit A5 and an MCU A1, wherein the signal of the vibration sensor c is a switching digital signal, and is connected to the input IO of the MCU A1 after passing through the isolation circuit A5. The data processing unit of the wireless transmission module C is independently composed of the MCU A1, and the data of the wireless transmission module C is transmitted to the MCU A1 through the USB interface, and vice versa.

2) And (4) abnormal alarming: and comparing the calculation result of the signal processing unit with the parameter value set by the user, if the data is monitored to be abnormal, generating alarm information immediately, reporting the alarm information to a far-end background D, and notifying a corresponding responsible person to the site for examination and maintenance by a short message.

3) Active anti-theft: according to the input state of the vibration sensor c signal processing unit, when the input is abnormal, the situation that the ground wire stealing alarm occurs is considered, the sound-light alarm module B is immediately triggered to work, and a short message is sent in time to inform field responsibility personnel to go to check.

4) Data storage: the data to be stored are three, firstly, the real-time data is calculated by the signal processing unit, and the data can be stored in the storage unit for later viewing, so that the data volume of at least one month can be stored; secondly, abnormal alarm information is obtained, and the data of the abnormal alarm information is also stored in a storage unit as real-time data for subsequent checking, so that the data volume of at least one month can be stored; and finally, system parameters and user parameters, wherein the system parameters comprise a local IP address of the equipment, a port number, a remote background DIP address, a port number and a protocol type, and the user parameters comprise a transformation ratio of a current transformer, a data acquisition period, a current alarm threshold, a temperature alarm threshold and a telephone number of a person responsible for the site.

5) Parameter configuration: the 4G wireless transmission module C can receive the configuration parameters sent by the remote background D and transmit the configuration parameters to the MCU A1, the MCU A1 verifies and verifies the parameters, the reset equipment runs according to the new parameters after the parameters are confirmed to be error-free, and the new parameters are updated to the data storage unit.

6) Wireless communication: the wireless communication realization function is mainly that an instruction of a remote background D request data is received and returned to the real-time data or historical data obtained by calculation and analysis of the signal processing unit; actively reporting alarm information to a far-end background D; actively sending an alarm short message to a field responsible person; and receiving a parameter configuration instruction of the far-end background D, and returning an instruction configuration result.

As shown in fig. 2, the ground loop current monitoring host a includes a power quality chip a2, an MCU a1, an acousto-optic alarm module power control circuit A3, a temperature detection dedicated circuit a4, and a vibration detection isolation circuit A5, where the power quality chip a2 is connected to three current transformers (a1-A3), the power quality chip a2 is further connected to an MCU a1, the MCU a1 is connected to the acousto-optic alarm module power control circuit A3, the temperature detection dedicated circuit a4, and the vibration detection isolation circuit A5, the temperature detection dedicated circuit a4 is connected to three temperature sensors (B1-B3), the vibration detection isolation circuit is connected to four vibration sensors (C1-C4), the acousto-optic alarm module power control circuit A3 is connected to an acousto-optic alarm module B, and the MCU is further connected to a 4G high-speed wireless transmission module C.

The power module F supports DC 12V or 24V, AC 220V as a power supply mode, is an optional module and can meet power supply requirements in different occasions. The special chip A2 for power quality is used for processing signals from the current transformer a, can process the signals internally and directly output a calculation result, does not need the participation of the MCU A1, and the MCU A1 obtains the result only through the SPI. The vibration detection isolation circuit A5 can isolate the output signal of the vibration sensor c from the GPIO of the MCU A1, and the safety and stability of the device are guaranteed. The function of the acousto-optic alarm module B power supply control circuit is to control the power supply of the acousto-optic alarm module B, and the acousto-optic alarm module B works when being electrified, so that the acousto-optic alarm module B is controlled by adopting a mode of controlling the power supply, and the acousto-optic alarm module B is simple and convenient. The special interface for 4G high-speed wireless transmission is a USB2.0 interface of the MCU A1, can effectively match the transmission rate of the 4G high-speed wireless transmission module C, and realizes the high-speed transmission of data

As shown in fig. 3, it is explained how the current transformer a, the temperature sensor b, and the vibration sensor c are mounted on the ground cable d. For the convenience of installation and disassembly, the current transformer a is of a buckle type structure, and during installation, a mechanical buckle is opened and sleeved on the grounding cable d, and then the mechanical buckle is closed. In order to improve the detection precision of the temperature sensor b, the temperature sensor b is in a structure that a signal wire is connected with a metal temperature probe, when the temperature sensor b is installed, the temperature probe is placed on a grounding cable d, the temperature probe is attached to the grounding cable by using heat-conducting silicone grease and isolated from the environment temperature, and finally the outermost layer is wrapped by using a special fireproof blanket, so that the accuracy and the safety of temperature collection are further improved. In order to improve the detection accuracy of the vibration sensor c, the vibration sensor c is in a structure that a signal wire is connected with a metal temperature probe, and when the vibration sensor c is installed, the vibration probe is placed on the grounding cable d and then the outermost layer of the vibration probe is wrapped by a special fireproof blanket. In real-time fire blanket wrapping, temperature sensor b and vibration sensor c may be wrapped together.

As shown in fig. 5, the power quality chip a2 is preferably a chip of ATT7022EU type, the power quality chip a2 is further connected to a crystal oscillator circuit and a three-way current transformer protection circuit, the current transformer protection circuit includes a pull-up resistor, a ground capacitor and a protection resistor, the power quality chip a2 is connected to a current transformer through the protection resistor, and the power quality chip a2 is further connected to the pull-up resistor and the ground capacitor, respectively.

The utility model discloses an in another embodiment, for further improvement theftproof effect, the lock of theftproof collection accuse case E comprises special tool to lock locking, and its inside power module F, ground connection circulation monitoring host A, audible-visual alarm module B and the high-speed wireless transmission module C of 4G have been placed. The position of the sound-light alarm module B of the anti-theft control box E is designed into a grid shape, so that the sound and the alarm lamp signal can be effectively transmitted. An antenna interface is reserved at the position of the 4G high-speed wireless transmission module C of the convergence control box E, so that 4G signal transmission can be ensured. The anti-theft control box E can prevent a thief from cutting off the power supply F and damaging the monitoring host A, the sound-light alarm module B or the 4G high-speed wireless transmission module C.

The utility model replaces the wired communication mode with the 4G high-speed wireless transmission mode, thereby greatly reducing the difficulty and the construction cost of site construction and shortening the project implementation period; the 4G high-speed wireless transmission mode is used for replacing a common wireless communication mode, so that the data transmission efficiency is greatly improved, and the real-time performance is improved; the mode of using the vibration sensor C, the acousto-optic alarm module B, the 4G high-speed wireless transmission module C and the anti-dismantling control box E realizes an active anti-theft function, and prevents the situation that the grounding wire or the ground wire is stolen.

The utility model also provides a monitoring method of the online monitoring system of ground connection circulation with initiative theftproof and high-speed wireless transmission, including following step:

step S1, after the system is powered on, the grounding circulation monitoring host A, the sound-light alarm module B and the 4G high-speed wireless transmission module C carry out power-on self-detection;

step S2, the grounding circulation monitoring host A acquires current data of three current transformers respectively arranged on connecting wires of the middle joints of A, B, C three-phase cables through a power quality chip, acquires temperature data of three temperature sensors respectively arranged on connecting wires of the middle joints of A, B, C three-phase cables through a special temperature detection circuit, and acquires state data of four vibration sensors respectively arranged on connecting wires of the middle joints of A, B, C three-phase cables and a ground wire through a vibration detection isolation circuit;

step S3, the grounding circulation monitoring host A compares the acquired data with the user parameters, and if the data exceeds the set threshold, the grounding circulation monitoring host A immediately generates alarm information and gives an alarm;

the method comprises the following steps that three types of alarms exist, namely, current is abnormal, when the detected current value exceeds a threshold value set by a user, an abnormal state is actively reported to a far-end background D through a 4G high-speed wireless transmission module C, and field responsible personnel are informed of checking the abnormal state in the field through short messages; secondly, temperature is abnormal, when the detected temperature value exceeds a threshold value set by a user, an abnormal state is actively reported to a far-end background D through a 4G high-speed wireless transmission module C, and field responsible personnel are informed of checking the abnormal state in the field through short messages; thirdly, vibration is abnormal, when the state data of the vibration sensor is detected to exceed a threshold set by a user, the abnormal state is actively reported to a far-end background D through a 4G high-speed wireless transmission module C, field responsible personnel are informed of checking the abnormal state in the field through short messages, and meanwhile, an audible and visual alarm module B is started to warn a thief; when any abnormality occurs, real-time data and alarm information when an alarm occurs are stored in the local memory at the same time of alarming.

Step S4, the grounding circulation monitoring host A compares the acquired data with the user parameters, if the data does not exceed the set threshold, no alarm information is generated, but the real-time data is stored in the local memory;

step S5, after the grounding loop current monitoring host a receives the request instruction from the remote background D through the 4G high-speed transmission module, it checks and analyzes the data according to the protocol, and then takes corresponding action according to the specific instruction.

The utility model discloses a monitoring method adopts three kinds of theftproof modes to unite the theftproof:

the first anti-theft mode is as follows: the acousto-optic alarm module B is used as a first active anti-theft mode, the acousto-optic alarm module B is an alarm integrating voice and an alarm lamp, the power of the whole alarm is 23W, the working voltage can be DC 12V/24V or AC 220V/380V, the decibel of a loudspeaker is 110dB, the color of the alarm lamp can be selected, and the alarm tone is public security tone and supports voice setting. The working mode of the sound-light alarm module B is electrified to work, and the voice and the alarm lamp work simultaneously after the electricity is electrified. The power-on or off of the grounding loop current monitoring host is controlled by a grounding loop current monitoring host A, and when the GPIO of the grounding loop current monitoring host AMCU A1 is in a low level state, the module is in a power-off state, otherwise, the module is in a power-on state. Under normal conditions, the sound-light alarm module B is in a power-off non-working state. When detecting the abnormal signal of the vibration sensor c or the damage of the vibration sensor c, the MCU A1 of the grounding circulation monitoring host A sets the corresponding GPIO to be in a high level state, switches on the power supply of the sound-light alarm module B, triggers the sound-light alarm module B to work, and plays a role in warning thieves in a sound and light mode.

And (2) an anti-theft mode II: and the 4G high-speed wireless transmission module C provides a short message notification to serve as an active anti-theft mode II. When an abnormal signal of the vibration sensor C or the vibration sensor C is damaged, the MCU A1 of the grounding circulation monitoring host A sends a short message triggering instruction through the USB interface, and after the 4G high-speed wireless transmission module C receives the instruction, the pre-edited warning condition short message is sent to on-site responsible personnel to remind the responsible personnel to go to check in time.

And (3) an anti-theft mode is as follows: and adopting an anti-dismantling control box E as an anti-theft mode III. The anti-theft collection and control box E is locked by a special lockset and is provided with a power module F, a grounding circulation monitoring host A, an audible and visual alarm module B and a 4G high-speed wireless transmission module C. The position of the acousto-optic alarm module B of the control box E is designed to be in a grid shape, so that the sound and the alarm lamp signal can be effectively transmitted. An antenna interface is reserved at the position of the 4G high-speed wireless transmission module C of the convergence control box E, so that 4G signal transmission can be ensured. The anti-theft control box E can prevent a thief from cutting off the power supply F and damaging the monitoring host A, the sound-light alarm module B or the 4G high-speed wireless transmission module C.

The utility model discloses use three kinds of theftproof modes jointly, effectively solved the current not possessing perfect earth connection theftproof of ground connection circulation on-line monitoring device and cut the technical problem of function.

In addition, the utility model has multiple functions and wide application range; small, low in manufacturing cost adopts the modular structure, falls into a plurality of little independence, the module of interact with whole circuit structure, conveniently reuses, upgrades, dismantlement, recovery and processing after the maintenance and the product abandonment.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A grounding circulation on-line monitoring system with active anti-theft and high-speed wireless transmission is characterized by comprising a grounding circulation monitoring host, a current transformer, a temperature sensor, a vibration sensor, an audible and visual alarm module and a 4G high-speed wireless transmission module; the grounding circulation monitoring host is arranged near a grounding wire of a middle joint of the power cable, and is provided with three current transformers which are respectively arranged on a grounding wire of a middle joint of an A, B, C three-phase cable and connected with the grounding circulation monitoring host through connectors; the grounding circulation monitoring host is provided with three temperature sensors, the three temperature sensors are respectively arranged on the A, B, C three-phase cable intermediate joint grounding wire and are connected with the grounding circulation monitoring host through connectors; the grounding circulation monitoring host A is provided with four vibration sensors which are respectively arranged on a grounding wire and a grounding wire of an intermediate joint of an A, B, C three-phase cable and are connected with the grounding circulation monitoring host through connectors; the sound and light alarm modules are arranged beside the grounding circulation monitoring host and are placed together in the anti-disassembly junction box, and the grounding circulation monitoring host is provided with the sound and light alarm modules which are connected with the grounding circulation monitoring host through signal lines; the 4G high-speed wireless transmission module is arranged beside the grounding circulation monitoring host and is placed in the anti-dismantling junction control box together, and each grounding circulation monitoring host is provided with one 4G high-speed wireless transmission module which is connected with the grounding circulation monitoring host through a connector.

2. The on-line ground circulation monitoring system with active anti-theft and high-speed wireless transmission function as claimed in claim 1, wherein the number of the ground circulation monitoring host computers is multiple, and each ground circulation monitoring host computer is installed at a ground wire of a middle joint of each power cable.

3. The system of claim 1, wherein the current transformer is a snap-in structure, and when installed, the mechanical snap-in is opened, sleeved on the grounding cable, and then closed.

4. The system of claim 1, wherein the temperature sensor is a metal temperature probe connected to the signal line, and when the system is installed, the metal temperature probe is placed on the grounding cable, the temperature probe is attached to the grounding cable by using heat-conducting silicone grease, the grounding cable is isolated from the ambient temperature, and finally the outermost layer of the system is wrapped by a special fireproof blanket.

5. The on-line ground circulation monitoring system with active theft prevention and high-speed wireless transmission according to claim 1, wherein the vibration sensor is a structure that a signal wire is connected with a metal vibration probe, and when the system is installed, the metal vibration probe is placed on a ground cable and then the outermost layer of the metal vibration probe is wrapped by a special fireproof blanket; when the real-time fire blanket is wrapped, the temperature sensor and the vibration sensor can be wrapped together.

6. The on-line monitoring system for ground circulation with active anti-theft and high-speed wireless transmission according to claim 1, wherein the on-line monitoring system for ground circulation comprises a power quality chip, an MCU, a power control circuit for acousto-optic alarm module, a circuit dedicated for temperature detection, and a vibration detection isolation circuit, wherein the power quality chip is connected to three current transformers respectively, the power quality chip is further connected to the MCU, the MCU is connected to the power control circuit for acousto-optic alarm module, the circuit dedicated for temperature detection, and the vibration detection isolation circuit, the circuit dedicated for temperature detection is connected to three temperature sensors, the vibration detection isolation circuit is connected to four vibration sensors, the power control circuit for acousto-optic alarm module is connected to the acousto-optic alarm module, and the MCU is further connected to the 4G high-speed wireless transmission module.

7. The on-line ground loop current monitoring system with active theft prevention and high-speed wireless transmission function as claimed in claim 6, wherein the MCU is STM32F103VCT6 model.

8. The on-line ground loop current monitoring system with active anti-theft and high-speed wireless transmission function as claimed in claim 6, wherein said power quality chip is further connected to a crystal oscillator circuit and a three-way current transformer protection circuit, the current transformer protection circuit comprises a pull-up resistor, a ground capacitor and a protection resistor, the power quality chip is connected to the current transformer through the protection resistor, and said power quality chip is further connected to the pull-up resistor and the ground capacitor respectively.

9. The system of claim 6, wherein the power quality chip A2 is ATT7022 EU.

10. The system according to claim 1, wherein the 4G high-speed wireless transmission module is further in remote communication with an external remote background; the 4G high-speed wireless transmission module is a multi-mode 4G module and at least supports high-speed access of 2G, 3G and 4G networks of any one of mobile, communication and telecommunication; the SMS short message receiving and sending and short message configuration functions are supported; supporting a USIM card, an APN special card and an Internet of things card of the mobile phone; supporting FOTA differential upgrade; supporting FTP other upgrades.

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