Coal mine underground monitoring camera

Abstract

The utility model discloses an underground monitoring camera for a coal mine. The underground monitoring camera comprises a power supply module, a power switch module, a camera, a main control module, a photoelectric transceiver module and an Ethernet extension cord module, the photoelectric transceiver module is connected with the main control module and is used for converting a network signal into an optical signal and outputting one path of network signal to the Ethernet extension line module; the Ethernet extension line module is connected with the photoelectric transceiver module, and the Ethernet extension line module is used for prolonging the transmission distance of network signals; the power supply module comprises a first power supply conversion module, and the input end of the power supply conversion module is connected with an external intrinsic safety power supply. The utility model provides an underground monitoring camera for a coal mine, which can intermittently transmit network signals and optical signals, reduce the power consumption of a battery to the greatest extent and prolong the working time of the camera.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coal mine underground monitoring camera belongs to coal mine safety monitoring technical field. BACKGROUND

[0002] At present, in order to guarantee the safety of underground construction operation, the important operating place of coal mine underground must be installed with video monitoring facility, guarantees the safety production of underground, and can find and handle the illegal behavior and unsafe behavior in time.

[0003] But, along with the continuous development of monitoring technology, the function of camera is more and more powerful, and the camera also has more communication mode. Along with the popularization of coal mine informatization, network communication and optical communication technology are also widely used in coal mine safety monitoring. However, increasing network communication and optical communication device in mine-used intrinsic safety camera will increase the complexity of circuit connection. At the same time, since the mine-used intrinsic safety camera usually uses intrinsic safety power supply for power supply, after the power failure in underground, the backup battery of intrinsic safety power supply continues to supply power, but the network communication and optical communication device consume a large amount of power, which will cause the backup battery to be quickly depleted, shorten the use time of the camera, and cause safety hazards. SUMMARY

[0004] The utility model wants to solve the technical problem, overcomes the insufficient prior art, provides a kind of coal mine underground monitoring camera, network signal and light signal can be intermittently transmitted, maximum limit reduces the power consumption of battery, prolongs the working time of camera.

[0005] In order to solve the above technical problems, the technical scheme of the utility model is:

[0006] A kind of coal mine underground monitoring camera, it includes power module, power switch module, camera, main control module, photoelectric transceiver module and Ethernet extension line module;

[0007] The camera is connected with the main control module, and the camera is used to collect the working picture of coal mine underground;

[0008] The photoelectric transceiver module is connected with the main control module, and the photoelectric transceiver module is used to convert network signal into light signal, and output a network signal to the Ethernet extension line module;

[0009] The Ethernet extension line module is connected with the photoelectric transceiver module, and the Ethernet extension line module is used to extend the transmission distance of network signal;

[0010] The power module includes a first power conversion module. The input terminal of the power switch module is connected to an external intrinsically safe power supply. The output terminal of the power switch module is connected to the input terminal of the first power conversion module. The output terminal of the first power conversion module supplies power to the optoelectronic transceiver module and the Ethernet extension cable module. The control terminal of the power switch module is connected to the main control module.

[0011] Furthermore, it also includes a fill light, which is connected to the main control module, and the fill light is used to provide fill light for the camera.

[0012] Furthermore, the power module also includes a second power conversion module, a third power conversion module, and a fourth power conversion module;

[0013] The input terminal of the second power conversion module is connected to an external intrinsically safe power supply, and the output terminal of the second power conversion module supplies power to the camera.

[0014] The input terminal of the third power conversion module is connected to an external intrinsically safe power supply, and the output terminal of the third power conversion module powers the fill light.

[0015] The input terminal of the fourth power conversion module is connected to an external intrinsically safe power supply, and the output terminal of the fourth power conversion module supplies power to the main control module.

[0016] Furthermore, it also includes an RS485 communication module, which is connected to the main control module. The RS485 communication module is powered by the output of the fourth power conversion module and is used to communicate with the host computer via RS485.

[0017] Furthermore, the power switch module includes a MOSFET Q1, a transistor Q2, resistors R1, R2, and R3. The drain (D) of the MOSFET Q1 is connected to an external intrinsically safe power supply, and the source (S) of the MOSFET Q1 is connected to the input terminal of the first power conversion module. One end of resistor R1 is connected to the drain of the MOSFET Q1, and the other end of resistor R1 is connected to the gate (G) of the MOSFET Q1. One end of resistor R2 is connected to the gate of the MOSFET Q1, and the other end of resistor R2 is connected to the collector of the transistor Q2. The emitter of the transistor Q2 is grounded. One end of resistor R3 is connected to the main control module, and the other end of resistor R3 is connected to the base of the transistor Q2.

[0018] Furthermore, the MOSFET Q1 is model IRF9530.

[0019] Furthermore, the transistor Q2 is model S8050.

[0020] The utility model discloses a kind of coal mine underground monitoring camera, it includes power module, power switch module, camera, main control module, photoelectric transceiver module and ethernet extension line module. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a principle block diagram of the utility model of a coal mine underground monitoring camera;

[0022] Figure 2 It is the circuit principle diagram of main control module of the utility model;

[0023] Figure 3 It is the circuit principle diagram of photoelectric transceiver module of the utility model;

[0024] Figure 4 It is the circuit principle diagram of RS485 communication module of the utility model;

[0025] Figure 5 It is the circuit principle diagram of light supplementing lamp of the utility model;

[0026] Figure 6 It is the circuit principle diagram of power module of the utility model. DETAILED DESCRIPTION

[0027] In order to make the content of the utility model more easily be clearly understood, according to specific embodiment below and combining with drawings, the utility model is further detailed.

[0028] As Figure 1 Shown, the embodiment provides a kind of coal mine underground monitoring camera, it includes power module, power switch module, camera, main control module, photoelectric transceiver module and ethernet extension line module.

[0029] As Figure 2 Shown, the main control module of the embodiment adopts main control chip U1, model is STM32F103, is a kind of 32-bit microcontroller based on ARM Cortex-M kernel STM32 series, using 3.3V power supply.

[0030] As Figure 1As shown in the figure, the camera of the embodiment is connected with the main control module, and the camera is used to collect the working picture of the coal mine underground, and the collected picture information is transmitted to the main control module. The camera of the embodiment adopts a camera module with a model of YST-2CD7A04.

[0031] As shown in the figure, Figure 1 As shown in the figure, the photoelectric transceiver module of the embodiment is connected with the main control module. The main control module transmits the picture information to the photoelectric transceiver module through network signals. The photoelectric transceiver module converts the network signals into optical signals, and accesses the communication ring network or other optical communication equipment in the coal mine underground through optical fibers. The transmission distance of the optical fiber communication can reach tens or hundreds of kilometers, and the super-long distance transmission of the underground monitoring picture can be realized. The underground monitoring picture can be transmitted to the safety monitoring center and other long-distance monitoring equipment on the surface. The photoelectric transceiver module of the embodiment adopts 2 optical and 3 electrical, that is, there are 2 optical fiber interfaces and 3 network electrical ports. The main control module is connected with the network port one through a network cable. Then, the optical fiber is inserted into the optical fiber interface. The network port two outputs a network signal to the Ethernet extension line module.

[0032] As shown in the figure, Figure 1 As shown in the figure, the Ethernet extension line module of the embodiment adopts a network extender. The Ethernet extension line module is connected with the photoelectric transceiver module. The photoelectric transceiver module transmits the picture information to the Ethernet extension line module through network signals. The Ethernet extension line module can effectively extend the network transmission distance, and can break through the limitation of the traditional Ethernet transmission distance within 100 meters. The 100M network can be transmitted through a twisted pair cable for 500 meters, the 10M network can be transmitted for 1500 meters or even longer. This can transmit the underground monitoring picture to a farther distance in the underground. If the installation position of the camera is not suitable for the staff to debug, the staff can also debug the camera after the distance is extended.

[0033] As shown in the figure, Figure 1 As shown in the figure, the RS485 communication module of the embodiment is connected with the main control module. The RS485 communication module is powered by the output end of the second power conversion module. The RS485 communication module is used for RS485 communication with the host computer. In addition to the optical fiber communication and the Ethernet communication, the communication transmission mode of the embodiment is also equipped with the RS485 communication, which can communicate with other devices equipped with the RS485 communication interface in the coal mine underground, and meet the communication needs of different types of devices. Figure 3 As shown in the figure, the RS485 communication module of the embodiment adopts an RS485 communication chip U5 with a model of TP8485E. The RS485 communication chip U5 is connected with the main control chip U1.

[0034] As shown in the figure, Figure 1As shown in the figure, the underground coal mine monitoring camera of the embodiment further comprises a light supplement lamp, and the light supplement lamp is connected with the main control module. Since the light condition is poor in the underground coal mine, the camera is lighted by the light supplement lamp. Figure 4 As shown in the figure, the light supplement lamp of the embodiment adopts an LED driving chip U6 with a model number of PT4115, and the LED driving chip U6 is used to drive the LED light to light the camera.

[0035] As shown in the figure, Figure 1 As shown in the figure, the power module of the embodiment comprises a first power conversion module, the input end of the power switch module is connected with an external intrinsic safety power supply, the output end of the power switch module is connected with the input end of the first power conversion module, the output end of the first power conversion module is used to supply power to the photoelectric transceiver module and the Ethernet extension line module, and the control end of the power switch module is connected with the main control module.

[0036] Specifically, as shown in the figure, Figure 5 As shown in the figure, the power switch module comprises a MOS tube Q1, a triode Q2, a resistor R1, a resistor R2 and a resistor R3, the MOS tube Q1 has a model number of IRF9530, and the triode Q2 has a model number of S8050. The D pole of the MOS tube Q1 is connected with the external intrinsic safety power supply, the S pole of the MOS tube Q1 is connected with the input end of the first power conversion module, one end of the resistor R1 is connected with the D pole of the MOS tube Q1, the other end of the resistor R1 is connected with the G pole of the MOS tube Q1, one end of the resistor R2 is connected with the G pole of the MOS tube Q1, the other end of the resistor R2 is connected with the collector of the triode Q2, the emitter of the triode Q2 is grounded, one end of the resistor R3 is connected with the main control module, and the other end of the resistor R3 is connected with the base of the triode Q2. When the main control module sends a high level to one end of the resistor R3, the MOS tube Q1 is turned on, OUT1 outputs a voltage, the first power conversion module has an input power supply, and the photoelectric transceiver module and the Ethernet extension line module are powered; when the main control module sends a low level to one end of the resistor R3, the MOS tube Q1 is cut off, OUT1 does not output a voltage, the first power conversion module has no input power supply, the photoelectric transceiver module and the Ethernet extension line module have no power supply, and stop working.

[0037] Since the underground coal mine monitoring camera adopts the intrinsic safety power supply, when the power is off in the underground coal mine, the backup battery of the intrinsic safety power supply is used for power supply. Since the photoelectric transceiver module and the Ethernet extension line module have a large power consumption, in order to reduce the power consumption of the battery, the embodiment adopts an intermittent transmission of the optical signal and the network signal. The main control module sends a control instruction to the power switch module at a fixed time, opens the power switch module at a fixed time, and intermittently supplies power to the photoelectric transceiver module and the Ethernet extension line module, so as to realize the intermittent transmission of the network signal and the optical signal.

[0038] As shown in the figure, Figure 1The power module of the embodiment further comprises a second power conversion module, a third power conversion module and a fourth power conversion module.

[0039] Specifically, the input end of the first power conversion module is connected with the output end of the power switch module, and the output end of the first power conversion module supplies power for the photoelectric transceiver module and the Ethernet extension line module. Figure 6 As shown in the figure, the first power conversion module adopts a power chip U7 with a model number of TPS54331 to convert an 18V external intrinsically safe DC power into a 5V power for the photoelectric transceiver module and the Ethernet extension line module.

[0040] The input end of the second power conversion module is connected with the external intrinsically safe power, and the output end of the second power conversion module supplies power for the camera. Figure 6 As shown in the figure, the second power conversion module adopts a power chip U8 with a model number of TPS54331 to convert an 18V external intrinsically safe DC power into a 5V power for the camera.

[0041] The input end of the third power conversion module is connected with the external intrinsically safe power, and the output end of the third power conversion module supplies power for the light supplement lamp. Figure 6 As shown in the figure, the third power conversion module adopts a power chip U9 with a model number of TPS54331 to convert an 18V external intrinsically safe DC power into a 9V power for the light supplement lamp circuit board.

[0042] The input end of the fourth power conversion module is connected with the external intrinsically safe power, and the output end of the fourth power conversion module supplies power for the main control module and the RS485 communication module. Figure 6 As shown in the figure, the fourth power conversion module adopts a power chip U10 with a model number of HT7333-3 to convert an 18V external intrinsically safe DC power into a 3.3V power for the main control module and the RS485 communication module.

[0043] The above-described specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the utility model, and it should be understood that the above-described specific embodiments are merely specific embodiments of the utility model and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coal mine underground monitoring camera, characterised in that: It includes power module, power switch module, camera, main control module, photoelectric transceiver module and Ethernet extension line module; The camera is connected with the main control module, and the camera is used for collecting the working picture of the coal mine underground. The photoelectric transceiver module is connected with the main control module, and the photoelectric transceiver module is used for converting the network signal into the optical signal and outputting a network signal to the Ethernet extension line module. The Ethernet extension line module is connected with the photoelectric transceiver module, and the Ethernet extension line module is used for extending the transmission distance of the network signal. The power module includes a first power conversion module, the input end of the power switch module is connected with the external intrinsically safe power supply, the output end of the power switch module is connected with the input end of the first power conversion module, the output end of the first power conversion module is used for supplying power to the photoelectric transceiver module and the Ethernet extension line module, and the control end of the power switch module is connected with the main control module.

2. The underground coal mine monitoring camera of claim 1, wherein: It also includes a light supplement lamp connected with the main control module, and the light supplement lamp is used for supplementing light for the camera.

3. The underground coal mine monitoring camera of claim 2, wherein: The power module further includes a second power conversion module, a third power conversion module and a fourth power conversion module; The input end of the second power conversion module is connected with the external intrinsically safe power supply, and the output end of the second power conversion module is used for supplying power to the camera. The input end of the third power conversion module is connected with the external intrinsically safe power supply, and the output end of the third power conversion module is used for supplying power to the light supplement lamp. The input end of the fourth power conversion module is connected with the external intrinsically safe power supply, and the output end of the fourth power conversion module is used for supplying power to the main control module.

4. The underground coal mine monitoring camera of claim 3, wherein: It also includes an RS485 communication module connected with the main control module, and the RS485 communication module is powered by the output end of the fourth power conversion module, and the RS485 communication module is used for RS485 communication with the upper computer.

5. The underground coal mine monitoring camera of claim 1, wherein: The power switch module includes a MOS tube Q1, a triode Q2, a resistor R1, a resistor R2 and a resistor R3, the D pole of the MOS tube Q1 is connected with the external intrinsically safe power supply, the S pole of the MOS tube Q1 is connected with the input end of the first power conversion module, one end of the resistor R1 is connected with the D pole of the MOS tube Q1, the other end of the resistor R1 is connected with the G pole of the MOS tube Q1, one end of the resistor R2 is connected with the G pole of the MOS tube Q1, the other end of the resistor R2 is connected with the collector of the triode Q2, the emitter of the triode Q2 is grounded, one end of the resistor R3 is connected with the main control module, and the other end of the resistor R3 is connected with the base of the triode Q2.

6. The coal mine monitoring camera of claim 5, wherein: The model of the MOS tube Q1 is IRF9530.

7. The underground coal mine monitoring camera of claim 5, wherein: The model of the triode Q2 is S8050.

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