CN210093428U - Power signal monitoring device and wireless information leakage monitoring system - Google Patents
Power signal monitoring device and wireless information leakage monitoring system Download PDFInfo
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- CN210093428U CN210093428U CN201921605035.2U CN201921605035U CN210093428U CN 210093428 U CN210093428 U CN 210093428U CN 201921605035 U CN201921605035 U CN 201921605035U CN 210093428 U CN210093428 U CN 210093428U
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Abstract
The utility model relates to a power signal monitoring device and a wireless information leakage monitoring system, wherein the power signal monitoring device comprises a signal acquisition interface, a signal extraction circuit, an acquisition card and a signal transmission interface; the signal acquisition interface is connected with the signal extraction circuit, the signal extraction circuit is connected with the acquisition card, and the acquisition card is connected with the external processing equipment through the signal transmission interface; the signal acquisition interface is used for connecting a tested line; the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface; the acquisition card is used for processing, decomposing and demodulating the electric power signals acquired by the signal extraction circuit and then sending the electric power signals to the external processing equipment through the signal transmission interface. The power information monitoring device can timely find that abnormal data exist in an old line for transmission, prevent the behaviors of attacking and damaging a network and stealing information due to the fact that a new wireless communication module is preset in equipment, and provide help for network safety.
Description
Technical Field
The utility model relates to an information leakage monitoring technology field, in particular to power signal monitoring device and wireless new line information leakage monitoring system.
Background
With the large number of applications of computers and smart devices, communication becomes an important bridge to connect various devices. The wireless communication is a special communication mode for transmitting voice or data by utilizing an existing wired network (380/220V), a network cable and a Cabie cable which are already arranged, and network wiring is not needed. Some equipment manufacturers who are not useful can use the security hole to preset a new wireless communication module in the equipment to attack, destroy and steal information on the network, and the way of causing the information leakage of the network is often easy to be ignored.
SUMMERY OF THE UTILITY MODEL
Therefore, it is desirable to provide a power signal monitoring device and a new line-free information leakage monitoring system, which solve the problem of information leakage or an attack of an important information device by a pre-buried information bomb due to abnormal communication in the existing information transmission behavior through an old line.
In order to achieve the above object, the inventor provides a power signal monitoring device, which includes a signal acquisition interface, a signal extraction circuit, an acquisition card and a signal transmission interface;
the signal acquisition interface is connected with the signal extraction circuit, the signal extraction circuit is connected with the acquisition card, and the acquisition card is connected with the external processing equipment through the signal transmission interface;
the signal acquisition interface is used for connecting a tested line;
the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface;
the acquisition card is used for processing, decomposing and demodulating the electric power signals acquired by the signal extraction circuit and then sending the electric power signals to the external processing equipment through the signal transmission interface.
And further optimizing, wherein the signal acquisition interface comprises a power line interface, a network cable interface and a Cabie interface.
Preferably, the signal extraction circuit comprises a coupling circuit, and the coupling circuit is used for extracting the high-frequency carrier signal on the tested line and preventing the current existing on the tested line.
Further optimizing, still include attenuator circuit, attenuator circuit is used for adjusting the size of the electric power signal that signal extraction circuit gathered.
Further optimization, the attenuator circuit further comprises a CPU, the attenuator circuit further comprises an attenuation value selection switch, the control end of the attenuation value selection switch is connected to the CPU, and the CPU is used for selecting the attenuation value of the attenuator circuit through the attenuation value selection switch.
The signal acquisition interface is connected with the signal extraction circuit through the channel selection switch, and the CPU is used for controlling the channel selection switch to select the data processing circuit to be connected with the signal acquisition interface.
Further optimizing, still include signal indicator, signal indicator connects to CPU, CPU is used for showing the selection result of control signal selector switch or attenuation value selector switch through signal indicator.
Further preferably, the signal transmission interface is a USB interface.
The inventor also provides another technical scheme that: a wireless information leakage monitoring system comprises a power signal monitoring device and a data processor;
the electric power signal monitoring device comprises a signal acquisition interface, a signal extraction circuit, an acquisition card and a signal transmission interface; the signal acquisition interface is connected with the signal extraction circuit, the signal extraction circuit is connected with the acquisition card, and the acquisition card is connected with the data processor through the signal transmission interface;
the signal acquisition interface is used for connecting a tested line;
the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface;
the acquisition card is used for processing, decomposing and demodulating the electric power signals acquired by the signal extraction circuit and then sending the electric power signals to the data processor through the signal transmission interface.
And further optimizing, the data processor is also used for storing the received power signal data into a database, reading the power signal data in the database and generating a waveform pattern according to the coordinate axis parameters.
Different from the prior art, according to the technical scheme, the power information monitoring device is connected with the line to be tested, real-time monitoring is carried out on the old line, the power signal on the line to be tested is obtained, the obtained power signal is processed and analyzed and then sent to the external processing equipment, the phenomenon that abnormal data are transmitted in the old line can be timely found, an alarm is given immediately, the behaviors that a new line communication module attacks and damages a network and information is stolen due to the fact that the new line communication module is preset in the equipment are effectively prevented, and help is provided for network security of a user.
Drawings
Fig. 1 is a schematic structural diagram of an electric power signal monitoring apparatus according to an embodiment;
FIG. 2 is a schematic diagram of a circuit principle of an acquisition card according to an embodiment;
FIG. 3 is a schematic circuit diagram of a coupling circuit according to an embodiment;
FIG. 4 is a schematic diagram of an attenuator circuit according to an embodiment
FIG. 5 is a schematic diagram of a CPU according to an embodiment of the present invention
FIG. 6 is a schematic diagram of a signal indicator according to an embodiment
FIG. 7 is a schematic diagram of a configuration of a wireless information leak monitoring system according to an embodiment;
figure 8 is a flow chart illustrating a process of storing power signal data into data by the data processor according to one embodiment,
FIG. 9 is a flowchart illustrating a process of a data processor for clarifying database cache data according to an embodiment,
FIG. 10 is a flow chart illustrating the generation of a display image by the data processor according to one embodiment,
fig. 11 is a flowchart illustrating a process of determining a line status by the data processor according to an embodiment of the present invention.
Description of reference numerals:
110. a power signal monitoring device is arranged on the power supply,
111. a collection card is arranged in the device,
112. a coupling circuit for coupling the two circuits to each other,
113. an attenuator circuit for controlling the operation of the attenuator circuit,
114. a signal transmission interface for transmitting the signal to the external device,
115、CPU，
116. a signal light is used for indicating the light,
117. a power line interface is connected with the power line,
118. a network cable interface is connected with the network cable,
119. the line of the Cabie is connected with the cable,
120. a data processor.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the present embodiment provides an electric power information monitoring apparatus 110, which can monitor a secure electric power network in real time, and can also be applied to real-time monitoring of other network lines, including a signal acquisition interface, a signal extraction circuit, an acquisition card 111, and a signal transmission interface 114; the signal acquisition interface is connected to the signal extraction circuit, the signal extraction circuit is connected to the acquisition card 111, and the acquisition card 111 is connected to external processing equipment through the signal transmission interface 114;
the signal acquisition interface is used for connecting a tested line;
the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface;
the acquisition card 111 is configured to process, decompose, and demodulate the power signal acquired by the signal extraction circuit, and then send the processed power signal to an external processing device through the signal transmission interface 114;
the line of the device is monitored through the power signal monitoring device port 110, the signal acquisition interface of the power signal device is connected to the line to be tested in the device, such as the power line network line, the network line and the Cabie line 119, wherein the signal acquisition interface includes a power line interface 117, a network line interface 118 and a Cabie interface, which are respectively connected to the power line network line in the line to be tested through the power line interface 117, the network line interface 118 is connected to the network line in the line to be tested, the Cabie line interface 119 is connected to the Cabie line 119 in the line to be tested, when the signal acquisition interface of the power signal device is connected to the line to be tested, the signal extraction circuit extracts the power signal in the line to be tested, when the signal extraction circuit extracts the power signal in the line to be tested, the signal is input to the data input port of the acquisition card 111, after the processing, analysis and demodulation of the power signal are completed through the acquisition card 111, and then transmitted to an external processing device through the signal transmission interface 114, the external processing device judges whether a communication signal characteristic value exists in the detected line or not by receiving the power signal, and if the detected line contains the communication signal characteristic value, the external processing device sends an alarm signal to alarm and remind. By monitoring the information transmission behavior of the information processing equipment through the existing old line in an all-round way, once the data transmission on the detected line is found, the alarm is given immediately, the abnormal communication in the detected line can be found in time, the leakage of information secrets or the attack of the important information equipment by the pre-buried information bomb can be prevented, and the help is provided for the network security.
Referring to fig. 2, in this embodiment, the core of the power signal monitoring device port 110 is an acquisition card 111, the acquisition card 111 adopts a multifunctional data acquisition card 111 capable of acquiring 1KHz to 100MHz, which covers all frequency bands and frequency points of communication in the prior art, the acquisition card 111 adopts a USB high-speed data acquisition card 111, and the signal transmission interface 114 adopts a USB2.0 interface to realize information interaction with the data processor 120, and the parameters are as follows: the maximum sampling rate is 100MSa/s, the sampling channel is single/double channel (can be controlled by software), the sampling digit number is 8bit, the sampling depth is 2MB (1 MB/CH in double channel), the input impedance is 50 omega, the input amplitude is + -2.5V, the maximum input amplitude deviation is + -10%, the maximum input direct current offset is + -10 LSB, the analog bandwidth is DC-10MHz, the self-contained full duplex RS232 serial port is provided, the maximum standby power consumption is less than or equal to 280mA, the maximum working power consumption is less than or equal to 500mA, the triggering mode comprises external triggering and channel triggering, the external triggering can be edge triggering and level triggering, the channel triggering can be a triggering channel, and the threshold value and the edge type are adopted, the external trigger input impedance is 10k omega, the external trigger input level is 3.3V LVTTL, the maximum analog channel input voltage is +/-5V, and the maximum trigger access input voltage is +/-5V. In order to implement communication, the acquisition card 111 needs to add peripheral circuits, such as the coupling circuit 112 and the attenuator circuit 113.
Referring to fig. 3 and 5, the signal extracting circuit includes a coupling circuit 112, and the coupling circuit 112 is used for extracting a high-frequency carrier signal on the line under test and blocking a current existing on the line under test. The signal extraction circuit adopts the coupling circuit 112 as the input channel of the signal, the coupling circuit 112 extracts the signal and selects the interface signal from the old line, the coupling circuit 112 extracts the high-frequency carrier signal from the old line, so as to facilitate the demodulation by the acquisition card 111, and simultaneously can prevent the current possibly existing in the old line from entering the power signal monitoring device port 110. Meanwhile, in order to realize the function of selecting the interface signal, the power signal monitoring device interface 110 further comprises a CPU115 and a channel selection switch, the signal acquisition interface is connected to the signal extraction circuit through the channel selection switch, and the CPU115 is used for controlling the channel selection switch to select the data processing circuit to connect the signal acquisition interface. Meanwhile, the CPU115 may control the channel selection switch to select the type of the signal acquisition interface connected to the coupling circuit 112.
Referring to fig. 4 and 5, the power signal monitoring device port 110 further includes an attenuator circuit 113, and the attenuator circuit 113 is configured to adjust the magnitude of the power signal collected by the signal extraction circuit. The main uses of the attenuator circuit 113 are: the signal size in the adjusting circuit can be used for directly reading the attenuation value of the tested network circuit in the comparison method measuring circuit, simultaneously the impedance matching can be improved, if some circuits require a relatively stable load impedance, an attenuator can be inserted between the circuit and the actual load impedance, and the change of the impedance can be buffered. The attenuator circuit 113 further comprises an attenuation value selection switch, a control end of the attenuation value selection switch is connected to the CPU115, and the CPU115 is configured to select an attenuation value of the attenuator circuit 113 through the attenuation value selection switch. Wherein the attenuation value includes 0dBm or 10dBm, the CPU115 may control the attenuation value selection switch in the attenuator circuit 113 to select the attenuation value of 0dBm or 10 dBm.
Referring to fig. 6, in the present embodiment, the signal monitoring device further includes a signal indicator 116, the signal indicator 116 is connected to the CPU115, and the CPU115 is configured to display a selection result of the control signal selection switch or the attenuation value selection switch through the signal indicator 116. The CPU115 may control the signal indicator 116 according to the type of the signal acquisition interface connected to the selective coupling circuit 112 or the attenuation value of the attenuator circuit 113, wherein the network cable interface 118 is displayed by using the red signal indicator 116, the power line interface 117 is displayed by using the green signal indicator 116, and the cab cable interface is displayed by using the blue signal indicator 116.
Referring to fig. 7, the present embodiment provides a new line-less information leakage monitoring system, which can perform real-time monitoring on a confidential power network, and can also be applied to real-time monitoring of other network lines, including a power signal monitoring device port 110 and a data processor 120; wherein the data processor 120 may be a notebook computer, a personal computer, a special purpose computer, or the like.
The power signal monitoring device port 110 comprises a signal acquisition interface, a signal extraction circuit, an acquisition card 111 and a signal transmission interface 114; the signal acquisition interface is connected to the signal extraction circuit, the signal extraction circuit is connected to the acquisition card 111, and the acquisition card 111 is connected to the data processor 120 through the signal transmission interface 114;
the signal acquisition interface is used for connecting a tested line;
the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface;
the acquisition card 111 is configured to process, decompose, and demodulate the power signal acquired by the signal extraction circuit, and then send the processed power signal to the data processor 120 through the signal transmission interface 114;
the data processor 120 is configured to determine whether a communication signal characteristic value exists on the detected line according to the collected power signal, and if the communication signal characteristic value exists, send an alarm signal.
The line of the device is monitored through the power signal monitoring device port 110, the signal acquisition interface of the power signal device is connected to the line to be tested in the device, such as the power line network line, the network line and the Cabie line 119, wherein the signal acquisition interface includes a power line interface 117, a network line interface 118 and a Cabie interface, which are respectively connected to the power line network line in the line to be tested through the power line interface 117, the network line interface 118 is connected to the network line in the line to be tested, the Cabie line interface 119 is connected to the Cabie line 119 in the line to be tested, when the signal acquisition interface of the power signal device is connected to the line to be tested, the signal extraction circuit extracts the power signal in the line to be tested, when the signal extraction circuit extracts the power signal in the line to be tested, the signal is input to the data input port of the acquisition card 111, after the processing, analysis and demodulation of the power signal are completed through the acquisition card 111, and then transmitted to the data processor 120 through the signal transmission interface 114, when the data processor 120 determines whether a communication signal characteristic value exists in the detected line for the received power signal, if the detected line contains the communication signal characteristic value, it is determined that the detected line has information leakage or is attacked, and the data processor 120 sends an alarm signal to alarm and remind. By monitoring the information transmission behavior of the information processing equipment through the existing old line in an all-round way, once the data transmission on the detected line is found, the alarm is given immediately, the abnormal communication in the detected line can be found in time, the leakage of information secrets or the attack of the important information equipment by the pre-buried information bomb can be prevented, and the help is provided for the network security.
In this embodiment, the core of the power signal monitoring device port 110 is an acquisition card 111, the acquisition card 111 adopts a multifunctional data acquisition card 111 capable of acquiring 1KHz to 100MHz, which covers all frequency bands and frequency points of communication in the prior art, the acquisition card 111 adopts a USB high-speed data acquisition card 111, and the signal transmission interface 114 adopts a USB2.0 interface to realize information interaction with the data processor 120, and the parameters are as follows: the maximum sampling rate is 100MSa/s, the sampling channel is single/double channel (can be controlled by software), the sampling digit number is 8bit, the sampling depth is 2MB (1 MB/CH in double channel), the input impedance is 50 omega, the input amplitude is + -2.5V, the maximum input amplitude deviation is + -10%, the maximum input direct current offset is + -10 LSB, the analog bandwidth is DC-10MHz, the self-contained full duplex RS232 serial port is provided, the maximum standby power consumption is less than or equal to 280mA, the maximum working power consumption is less than or equal to 500mA, the triggering mode comprises external triggering and channel triggering, the external triggering can be edge triggering and level triggering, the channel triggering can be a triggering channel, and the threshold value and the edge type are adopted, the external trigger input impedance is 10k omega, the external trigger input level is 3.3V LVTTL, the maximum analog channel input voltage is +/-5V, and the maximum trigger access input voltage is +/-5V. In order to implement communication, the acquisition card 111 needs to add peripheral circuits, such as the coupling circuit 112 and the attenuator circuit 113.
The signal extraction circuit includes a coupling circuit 112, and the coupling circuit 112 is used for extracting a high-frequency carrier signal on the tested line and preventing current existing on the tested line. The signal extraction circuit adopts the coupling circuit 112 as the input channel of the signal, the coupling circuit 112 extracts the signal and selects the interface signal from the old line, the coupling circuit 112 extracts the high-frequency carrier signal from the old line, so as to facilitate the demodulation by the acquisition card 111, and simultaneously can prevent the current possibly existing in the old line from entering the power signal monitoring device port 110. Meanwhile, in order to realize the function of selecting the interface signal, the power signal monitoring device interface 110 further comprises a CPU115 and a channel selection switch, the signal acquisition interface is connected to the signal extraction circuit through the channel selection switch, and the CPU115 is used for controlling the channel selection switch to select the data processing circuit to connect the signal acquisition interface. Meanwhile, the CPU115 may control the channel selection switch to select the type of the signal acquisition interface connected to the coupling circuit 112.
The power signal monitoring device port 110 further includes an attenuator circuit 113, and the attenuator circuit 113 is configured to adjust the magnitude of the power signal collected by the signal extraction circuit. The main uses of the attenuator circuit 113 are: the signal size in the adjusting circuit can be used for directly reading the attenuation value of the tested network circuit in the comparison method measuring circuit, simultaneously the impedance matching can be improved, if some circuits require a relatively stable load impedance, an attenuator can be inserted between the circuit and the actual load impedance, and the change of the impedance can be buffered. The attenuator circuit 113 further comprises an attenuation value selection switch, a control end of the attenuation value selection switch is connected to the CPU115, and the CPU115 is configured to select an attenuation value of the attenuator circuit 113 through the attenuation value selection switch. Wherein the attenuation value includes 0dBm or 10dBm, the CPU115 may control the attenuation value selection switch in the attenuator circuit 113 to select the attenuation value of 0dBm or 10 dBm.
In this embodiment, the signal monitoring device further includes a signal indicator 116, the signal indicator 116 is connected to the CPU115, and the CPU115 is configured to display a selection result of the control signal selection switch or the attenuation value selection switch through the signal indicator 116. The CPU115 may control the signal indicator 116 according to the type of the signal acquisition interface connected to the selective coupling circuit 112 or the attenuation value of the attenuator circuit 113, wherein the network cable interface 118 is displayed by using the red signal indicator 116, the power line interface 117 is displayed by using the green signal indicator 116, and the cab cable interface is displayed by using the blue signal indicator 116.
Referring to fig. 8, in this embodiment, in order to facilitate later checking of the collected power signal, the data processor 120 is further configured to store the received power signal data in a database. After the data processor 120 receives the power signal data sent by the acquisition card 111 through the signal transmission interface 114, the power signal data is stored in the database, so that the data can be conveniently retrieved from the database for checking and analyzing at a later stage. Referring to fig. 9, meanwhile, since the storage capacity of the database is limited, the database needs to be sorted and cached regularly, by judging whether the size of the database exceeds a predetermined range, if so, the database data is sorted, and outdated data content in the database is cleared. Referring to fig. 10, in order to facilitate viewing of the data in the database, the data in the database may be generated into a display image, and the data processor 120 is further configured to read the power signal data in the database to generate a waveform pattern according to the coordinate axis parameters. The step of generating the display image comprises: firstly, detecting whether a coordinate axis parameter changes, if not, directly reading data collected in a database, if so, obtaining a new coordinate axis parameter, generating a coordinate axis pattern according to the new coordinate axis parameter, then reading the data collected in the database, and then generating a waveform pattern of the collected data and a waveform pattern of the power signal according to the coordinate axis parameter. After the waveform pattern is generated, whether a data scale is generated or not can be continuously judged, if yes, scale parameters are read, and then a scale pattern is generated according to the scale parameters and the coordinate system.
Referring to fig. 11, the line state is determined according to the data in the database, and first, the power signal data collected in the database is read, and whether the power signal data collected meets the basis of abnormal data is determined, if yes, a visual interface is generated to warn, the abnormal data is stored, and the occurrence of the abnormality is recorded in log information.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (9)
1. A power signal monitoring device is characterized by comprising a signal acquisition interface, a signal extraction circuit, an acquisition card and a signal transmission interface;
the signal acquisition interface is connected with the signal extraction circuit, the signal extraction circuit is connected with the acquisition card, and the acquisition card is connected with the external processing equipment through the signal transmission interface;
the signal acquisition interface is used for connecting a tested line;
the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface;
the acquisition card is used for processing, decomposing and demodulating the electric power signals acquired by the signal extraction circuit and then sending the electric power signals to the external processing equipment through the signal transmission interface.
2. The power signal monitoring device of claim 1, wherein the signal acquisition interface comprises a power line interface, a network cable interface, and a Cabie interface.
3. The power signal monitoring device of claim 1, wherein the signal extraction circuit comprises a coupling circuit for extracting a high frequency carrier signal on the line under test and blocking current present on the line under test.
4. The apparatus for monitoring power signal of claim 1, further comprising an attenuator circuit for adjusting the magnitude of the power signal collected by the signal extraction circuit.
5. The power signal monitoring device according to claim 4, further comprising a CPU, wherein the attenuator circuit further comprises an attenuation value selection switch, a control terminal of the attenuation value selection switch is connected to the CPU, and the CPU is configured to select an attenuation value of the attenuator circuit through the attenuation value selection switch.
6. The power signal monitoring device according to claim 1, further comprising a CPU and a channel selection switch, wherein the signal acquisition interface is connected to the signal extraction circuit through the channel selection switch, and the CPU is configured to control the channel selection switch to select the data processing circuit to connect to the signal acquisition interface.
7. The power signal monitoring device according to claim 5 or the above, further comprising a signal indicator light connected to the CPU, wherein the CPU is configured to display a selection result of the control signal selection switch or the attenuation value selection switch through the signal indicator light.
8. The power signal monitoring device according to claim 1, wherein the signal transmission interface is a USB interface.
9. A wireless information leakage monitoring system is characterized by comprising a power signal monitoring device and a data processor;
the electric power signal monitoring device comprises a signal acquisition interface, a signal extraction circuit, an acquisition card and a signal transmission interface; the signal acquisition interface is connected with the signal extraction circuit, the signal extraction circuit is connected with the acquisition card, and the acquisition card is connected with the data processor through the signal transmission interface;
the signal acquisition interface is used for connecting a tested line;
the signal extraction circuit is used for extracting the power signal on the tested line through the signal acquisition interface;
the acquisition card is used for processing, decomposing and demodulating the electric power signals acquired by the signal extraction circuit and then sending the electric power signals to the data processor through the signal transmission interface.
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| CN201921605035.2U CN210093428U (en) | 2019-09-25 | 2019-09-25 | Power signal monitoring device and wireless information leakage monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519662A (en) * | 2019-09-25 | 2019-11-29 | 福州创宏诚信息科技有限公司 | A kind of electric power signal monitoring device and system is monitored without new line leakage of information |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110519662A (en) * | 2019-09-25 | 2019-11-29 | 福州创宏诚信息科技有限公司 | A kind of electric power signal monitoring device and system is monitored without new line leakage of information |
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Inventor after: Gong Jingwei Inventor after: Zheng Xiaoxue Inventor after: Tu Zongyin Inventor after: Hu Wei Inventor after: Chen Chaojin Inventor after: Guo Yuzhi Inventor after: Cai Wei Inventor after: Zhu Yong Inventor before: Gong Jingwei Inventor before: Zheng Xiaoxue Inventor before: Tu Zongyin Inventor before: Hu Wei Inventor before: Chen Chaojin |
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Effective date of registration: 20211027 Address after: 350001 room 305-02, floor 3, No. 1, Chuangye Road, Shangjie Town, Minhou County, Fuzhou City, Fujian Province Patentee after: Fuzhou chuanghongcheng Information Technology Co.,Ltd. Patentee after: FUJIAN MINDONG NEW TECHNOLOGY INDUSTRIAL CO.,LTD. Address before: 350000 shop 5, block 1, quantang community, No. 106, baishuitang Road, Wufeng street, Gulou District, Fuzhou City, Fujian Province Patentee before: Fuzhou chuanghongcheng Information Technology Co.,Ltd. |
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