CN202524570U

CN202524570U - Mining intrinsically-safe AP receiving device

Info

Publication number: CN202524570U
Application number: CN2011205774956U
Authority: CN
Inventors: 李金�; 顾军; 盛文燕; 王励彬
Original assignee: XUZHOU CUMT DAHUAYANG COMMUNICATION EQUIPMENT CO Ltd
Current assignee: HUAYANG COMMUNICATION TECHNOLOGY CO., LTD.
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-11-07
Anticipated expiration: 2021-12-31

Abstract

The utility model discloses a mining intrinsically-safe AP receiving device, belonging to mining wireless communication equipment. The receiving device comprises a housing and a control circuit installed in the housing. The control circuit comprises a power supply module, a voltage transformation module, a CPU module, a signal processing module, a network separating module, a network interface module, an optical fiber interface, a BDM connector, a wireless chip, and an RS232 interface module, wherein the power supply module supplies power for the CPU module via the voltage transformation module, the signal processing module converts signals into network signals, transmits the network signals to the network interface module after separation of the network separating module, and can provide optical signals for the optical fiber interface to carry out optical signal transmission, the BDM connector is used for connection between the CPU module and the wireless chip, the CPU module is connected with a wired memory, a wireless memory U12 and a wireless antenna interface are connected to the wireless chip, wired and wireless modules are respectively equipped with internal memories, and the CPU module is connected with the RS232 interface module for arranging board information. The AP receiving device has the advantages including rapid transmission speed, high reliability, convenient wiring, wide signal covering range, and stable signal transmission; and the AP receiving device is convenient for maintenance and software upgrading.

Description

Mine intrinsic safety type AP receiving system

Technical field

The utility model relates to a kind of Wireless Telecom Equipment, specifically is a kind of mining mine intrinsic safety type AP receiving system; Can be used for the image of mobile device is transferred to fixing point or aboveground through the AP receiving system, be convenient to implement to check, allocate; Be particluarly suitable for containing under the coal mine in the more inflammable and explosive environment of gas and coal dust and use,

Background technology

At present; AP equipment is a kind of very common equipment in daily life; It mainly provides wireless stations to cable LAN with from the visit of cable LAN to wireless stations, and the wireless stations in the access points coverage can intercom through it mutually.But the severity of subsurface environment and danger cause general A P equipment to use in the down-hole.In fast moving equipment; The concrete condition that needs true tunnel, understanding the place ahead; If come images will become unusual difficult with wired mode; Therefore how the concrete condition in mobile device the place ahead is transferred on the fixing point and watches, adopt wireless mode to come transmission video signal will become convenient, simple.

Summary of the invention

In order to overcome the shortcoming of above-mentioned prior art; The utility model provides a kind of mine intrinsic safety type AP receiving system; Signal sends through cable or optical fiber, and the compiling through the AP product becomes radio signals with electrical signal conversion and sends out; Between two AP, form the covering of wireless network; Adopt being connected of a wireless aps device and network shooting appearance on the mobile device, just can the image in mobile device the place ahead be transferred to arbitrarily on the point through wireless mode, modes such as employing optical cable, cable just can be real-time sees the concrete condition in the tunnel.

The utility model is mainly realized with following scheme: a kind of mine intrinsic safety type AP receiving system; Comprise closed shell and the control circuit that is installed in the closed shell, described control circuit comprises power module, voltage transformation module, CPU module, signal processing module, Network Isolation module, Network Interface Module, optical fiber interface, RS232 interface module, BDM connector and wireless chip; Power module passes through voltage transformation module to the CPU module for power supply in the control circuit; Signal processing module is that network signal is sent on the Network Interface Module after the Network Isolation module is isolated with conversion of signals; Signal processing module is connected with the optical fiber interface that is used for optical signal transmission; The BDM connector is used for being connected between CPU module and the wireless chip, and the CPU module connects one has linear memory, is connected with radio memory and wireless antenna interface on the wireless chip; Have wire module and wireless module that internal storage is all arranged respectively, the CPU module is connected with the RS232 interface module and is used to be provided with integrated circuit board information.

The beneficial effect of the utility model is: this device is used in the equipment of down-hole fast moving; Can be through wireless mode transmission video signal; Have that transmission speed is fast, reliability is high, easy-to-connect, signal cover is wide and the advantage of stable signal transmission, be convenient to safeguard and software upgrading; Break away from the mode of traditional wire transmission vision signal, Safety of Coal Mine Production is had profound significance.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the utility model theory diagram;

Fig. 2 is a 12V intrinsic safety electric source plate schematic diagram;

Fig. 3 is the voltage transformation module schematic diagram;

Fig. 4 is CPU module principle figure;

Fig. 5 is the signal processing module schematic diagram;

Fig. 6 is Network Isolation and network interface schematic diagram;

Fig. 7 is the optical fiber interface schematic diagram;

Fig. 8 is a RS232 interface module schematic diagram;

Fig. 9 is wired storage principle figure;

Figure 10 is the wireless chip schematic diagram;

Figure 11 is the seal casinghousing structural representation.

Among the figure: U1, power module, U2, voltage transformation module, U3, CPU module, U4, signal processing module; U5, Network Isolation module, U6, Network Interface Module, U7, optical fiber interface; U8, RS232 interface module, U9, BDM connector, have linear memory at U10; U11, wireless chip, U12, radio memory, U13, wireless antenna interface.

Embodiment

As shown in Figure 1; Mine intrinsic safety type AP receiving system has a power module U1; Power module U1 supplies power to CPU module U3 through voltage transformation module U2; To be network signal with conversion of signals be sent on the Network Interface Module U6 after Network Isolation module U5 isolates signal processing module U4, and can provide light signal to optical fiber interface U7 with optical signal transmission, BDM connector U9 is used for being connected between CPU module U3 and the wireless chip U11; CPU module U3 connects one has linear memory U10; Be connected with radio memory U12 and wireless antenna interface U13 on the wireless chip U11, have wire module and wireless module that internal storage is all arranged respectively, CPU module U3 is connected with RS232 interface module U8 and is used to be provided with integrated circuit board information.

Power module U1 adopts the DC12V power supply of intrinsic safety.After power supply inserts, carry out the conversion of voltage, so that can make peripheral operate as normal such as chip through voltage transformation module U2; CPU module U3 is core devices in entire product, and the transmission of data, conversion etc. are all controlled through this module, and this receiving system is the transmission that makes things convenient for downhole data; Reserve 6 network interfaces and two light mouths coffret, be connected with the BDM connector between wired plate and the wireless plate, make data can carry out mutual transmission through this connector as cable data; In wireless plate, core devices is a wireless chip, and it is the conversion of signals chip of a high speed; Can be with transmitting through wireless mode after the network data compiling; Also can the wireless signal that receive be transferred out through adopting wired mode after compiling, on wired plate and wireless plate, memory arranged all, be used to store wired IP and wireless IP data and MAC Address separately etc.; On wired plate, also has a RS232 interface; Can be used for wired and wireless information such as IP are set, conduct interviews, also can be provided with through the RJ45 interface through hyper terminal.

As shown in Figure 2, the utility model is the mine intrinsic safety type, therefore adopts the Flameproof and intrinsically safe power supply at down-hole power module U1.This Flameproof and intrinsically safe power supply adopts the two-stage overcurrent protection; Be respectively triode Q1, Q2, when the output failed because, can output current is constant in a fixed value through triode Q1 and Q2; Can be the output voltage increase or reduce through adjusting adjustable resistance R1_V and R2_V; But, realize the two-stage overvoltage protection of power supply thus when voltage is elevated to some values because the existence of voltage-stabiliser tube Z1 and Z2 will not raise.

As shown in Figure 3, voltage transformation module U2 is for making chip ability steady operation; Before chip POWER1, pass through processing such as a series of voltage stabilizing, afterflow, realized the transfer process of voltage then through POWER1, be output as stable 3.3V; For protecting each chip on wired plate and the wireless plate, this voltage transformation module also has the warning deixis, and 1,2 pins through optocoupler U6, U7 carry out the comparison of voltage; When if external voltage is too high, the optocoupler conducting, alarm lamp is bright; Effect in the time of simultaneously through Z3 and D5, thus play the function of protecting this module and CPU.

As shown in Figure 4, CPU module U3 has two clocks, is respectively that Y1 is that 32.768kHz and CRY1 are 18.432MHz, and the pin with signal processing module and data storage is arranged on CPU, controls the operate as normal of other each module through CPU.

As shown in Figure 5; Signal processing module U4 can realize the conversion of network signal and light signal; And carrying out data exchange processing through processing such as data compression and CPU module U3, it is fan out buffer that linear memory U10 and wireless chip U11 are wherein arranged, and is used to increase number that drives back level gate circuit and the buffer memory of realizing data; Operating frequency is 25MHz, provides required frequency by chip CRY3.

As shown in Figure 6, Network Isolation module U5 can bear the AC1500V requirement of withstand voltage.Network signal is isolated through U12 and U22; Cause the infringement of signal processing module when preventing outside faults such as network signal generation surge; H1164 can bear the withstand voltage of AC1500V, and this mine intrinsic safety type AP receiving system has 6 RJ45 interfaces, for user's use is provided convenience; And be transferred to aboveground control room etc. after can many AP equipment being connected through the RJ45 mouth, the convenient real-time down-hole situation of retrieving for examination.

As shown in Figure 7, optical fiber interface U7 has two, and the light signal of first optical interface is transferred in the signal processing module through FXR+0, FXR-0, FXTN0, FXTP0; The light signal of second optical interface is transferred in the signal processing module through FXR+1, FXR-1, FXTN1, FXTP1; Pass through signal processing module; Can transfer signals in the CPU module and handle, can also be network signal with conversion of signals, realizes the conversion of network signal and light signal.This optical module gigabit light mouth, packing forms is GBIC.

As shown in Figure 8; The employed chip of U29 is MAX232, is the single supply level transferring chip of the rs-232 standard serial ports design of U.S. letter company, and the DEBUG_TXD of chip and DEBUG_RXD directly receive in 78,79 pins of CPU module; TXD0 is connected to 61 pins of CPU module; RXD0 is connected to 64 pins, realizes the direct visit cpu mode of RS232, when forgeing the information such as IP address of mainboard; Can utilize serial ports to adopt the hyper terminal mainboard that conducts interviews, so that can change information such as IP address in the above.

As shown in Figure 9; Have linear memory U10 to have >=memory capacity of 8MB, the chip that has linear memory U10 to adopt is the general flash memory of atmel corp, and the A0-A22 in the chip, D0-D15 directly visit the CPU module; NCS0, nOE, nWE also directly receive in the CPU module simultaneously; Be used to read the information of CPU, directly store then, the Flash of the 8MB that is used for.

Shown in figure 10, the acp chip of wireless chip U11 is 88E6063, is the Fast Ethernet transducer of 7 ports of ETC company production; Based on the 802.1Q agreement; Major function is can be the conversion between network signal and wireless signal, in the utility model, can the network signal that transmission on wired plate comes be passed through processing such as compiling; Mode with wireless signal is transmitted in the space; Also can the wireless signal that receive be transmitted in finite element network through after handling simultaneously, in order to reach above-mentioned requirements, radio memory U12 has >=memory capacity of 256Mb.

Shown in figure 11, closed shell is metal or nonmetal processing, and meets the coal mine downhole safety standard; Have 14 horn mouths, one of them horn mouth is used to insert the DC12V power supply, and another horn mouth is used to pick out antenna, and other several horn mouths are respectively applied for and pick out netting twine, optical cable.

The course of work: down-hole AC power AC127V is through power module U1, and output DC12V is an intrinsic safety electric source, is voltage transformation module U2 power supply; Voltage through voltage transformation module U2 output is suitable is supplied with CPU module U3 and other periphery; CPU module U3 is used to handle the transmission and the exchange of various data, and signal processing module U4 is used to handle network signal and light signal, so that can handle various signals at CPU module U3; The transmission of network signal is isolated through Network Isolation module U5; It is defeated through the RJ45 oral instructions to isolate later network signal, and optical fiber interface U7 is arranged on the signal processing module, can be between two AP or be transferred to the mode of vision signal through optical cable aboveground; Realize remote, transmission reliably; Adopt between wired plate and the wireless plate and carry out the transmission of data with the BDM connector, signal is through a series of processing such as wireless chip U11 encode, and the most wired data transaction is that wireless data transmits in the space.

Claims

1. mine intrinsic safety type AP receiving system; Comprise closed shell and the control circuit that is installed in the closed shell, it is characterized in that: described control circuit comprises power module (U1), voltage transformation module (U2), CPU module (U3), signal processing module (U4), Network Isolation module (U5), Network Interface Module (U6), optical fiber interface (U7), RS232 interface module (U8), BDM connector (U9) and wireless chip (U11); Power module in the control circuit (U1) is supplied power to CPU module (U3) through voltage transformation module (U2); Signal processing module (U4) is that network signal is sent on the Network Interface Module (U6) after Network Isolation module (U5) is isolated with conversion of signals; Signal processing module (U4) is connected with the optical fiber interface that is used for optical signal transmission (U7); BDM connector (U9) is used for being connected between CPU module (U3) and the wireless chip (U11); CPU module (U3) connects one has linear memory (U10); Be connected with radio memory (U12) and wireless antenna interface (U13) on the wireless chip (U11), have wire module and wireless module that internal storage is all arranged respectively, CPU module (U3) is connected with RS232 interface module (U8) and is used to be provided with integrated circuit board information.

2. mine intrinsic safety type AP receiving system according to claim 1 is characterized in that: described power module (U1) is the Flameproof and intrinsically safe power supply.

3. mine intrinsic safety type AP receiving system according to claim 1, it is characterized in that: described Network Isolation module (U5) can be born the AC1500V requirement of withstand voltage.

4. mine intrinsic safety type AP receiving system according to claim 1 is characterized in that: described have linear memory (U10) to have >=memory capacity of 8MB.

5. mine intrinsic safety type AP receiving system according to claim 1 is characterized in that: described radio memory (U12) has >=and the memory capacity of 256Mb.

6. according to each described mine intrinsic safety type AP receiving system of claim 1～5, it is characterized in that: described closed shell is metal or nonmetal processing, and meets the coal mine downhole safety standard; Have 14 horn mouths, one of them horn mouth is used to insert the DC12V power supply, and another horn mouth is used to pick out antenna, and other several horn mouths are respectively applied for and pick out netting twine, optical cable.