CN100550746C - A kind of telecommunication network secondary electric supply installation - Google Patents

Abstract

The present invention relates to a kind of network power supply device; particularly relate to a kind of telecommunication network secondary electric supply installation; comprise that information input socket RJ45 and far-end send electricity and signal output socket RJ45; the power work status indicator lamp of each delivery outlet; 48V; the 24V DC power supply; contain current foldback circuit U1 in its main circuit board circuit, power-switching circuit U3; status display circuit U4; reset circuit U5; output power output circuit U6; supply current Acquisition Circuit U2; the RJ45 socket of electric switch is sent in two mutual two-way connections and two-way respectively connection upper level switch and teletransmission; the teletransmission of two-way connection upper level switch send electricity and signal output port to send electricity and signal input port with the two-way teletransmission that is connected this output port.Beneficial effect is to have made the telecommunication network power supply to second level switching equipment power supply with transmit signal, and has overcurrent protection function, conveniently manages by signal lamp simultaneously and understands each road current situation.

Description

A remote network secondary power supply device

technical field

The invention relates to a network power supply device, in particular to a remote network secondary power supply device.

Background technique

The current remote network power supply wiring uses separate wiring for strong and weak electricity, and the wiring must be kept at a certain distance from the AC power line to avoid data packets being lost due to electromagnetic interference from the AC power line. In addition, the existing remote power transmission system only It can supply power to the equipment on the first floor, that is, when the remote power transmission system sends power to the equipment on the first floor, the current delivered to the equipment on the lower floor cannot continue to be sent to the equipment on the second floor below this equipment. Electricity, but many of the previous wiring systems are multi-layer wiring systems, which has caused difficulties in wiring construction. In summary, the existing remote network power supply management system is not suitable for the current comprehensive power supply of intelligent residential areas with multi-layer structure. needs to be improved.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems in the prior art by providing a remote network secondary power supply device capable of transmitting power to the second-layer power network equipment. The technical solution of the present invention is to use a group of circuits to control 4-way power supply to supply power downwards. It is composed of a chassis, a power supply and a main circuit board. It is characterized in that: there are information input socket RJ45 and remote power transmission and signal output on the chassis panel. Socket RJ45, power working status indicators of each output port, the power supply is 48V, 24V DC power supply, the main circuit board circuit contains overcurrent protection circuit U1, the overcurrent protection output terminal is connected to the input terminal of the power supply current acquisition circuit U2, and the power conversion The input end and the output end are respectively connected to the remote power transmission and signal port output end and the power conversion circuit U3 at the input end of the power supply current acquisition circuit U2, the state display input end is connected to the state display circuit U4 at the output end of the power supply current acquisition circuit U2, and the reset input and output end Respectively connect the reset circuit U5 of the output end of the supply current acquisition circuit U2 and the input end of the power supply output circuit. The circuit U6 and the supply current collection input and output terminals are respectively connected to the power conversion circuit U3, the overcurrent protection circuit U1, the output terminal of the power supply output circuit U6 and the supply current collection circuit U2 at the input terminal of the circuit U4, and also includes two mutually bidirectionally connected and respectively Bidirectionally connect the RJ45 socket of the upper level switch and the remote transmission switch, bidirectionally connect the remote transmission power and signal output port of the upper level switch, and bidirectionally connect the remote transmission power and signal output port of the remote transmission power and signal input port.

The beneficial effects of the present invention can enable the existing remote network power supply to supply power and transmit signals to the second-level switching equipment, and has an over-current protection function. At the same time, it is convenient to manage and understand the current status of each channel through the signal lamp, and realizes the power supply in the true sense. Unified management.

Description of drawings

Fig. 1 is circuit block diagram and abstract accompanying drawing of circuit board of the present invention;

Fig. 2 is a kind of circuit diagram of Fig. 1;

Fig. 3 is a schematic diagram of the application of the present invention.

Detailed ways

Referring to Fig. 1 and Fig. 3, it can be seen that the present invention is composed of a chassis 1, a main circuit board 2 and a power supply therein. Referring to Fig. 1 and Fig. 2, we can see a circuit structure of its circuit board circuit, which is characterized in that: the power conversion circuit U3 can be connected by a power supply (PW-POWER) (such as model XR25-48S24) and its output terminal (OUT) to ground The integral capacitor C10 is composed.

The current imported from the power grid on the first floor is connected to the PWIN2 (GND) ground terminal and IN1 (48V) port in U3 through the remote power supply and signal port through the seventh and eighth groups of wires in the socket RJ45, and through the conversion Afterwards, the GND end is grounded, and the OUT end outputs 24V current. One end of the integrating capacitor C10 is connected to the OUT end of PW1, and the other end is grounded.

The power supply current acquisition circuit U2 can be composed of integrating capacitors C1, C3, C5, C7, C9, sampling resistors R7, R18, R29 and R40, operational amplifiers (such as model LM324) U2: 1, U2: 2, U2: 3, U2: 4 , cross-linking resistors R8, R19, R30, R41, Zener diode D13 and adjustable rheostat W1: one end of integrating capacitors C1, C3, C5, and C7 are respectively connected to one end of sampling resistors R7, R18, R29, and R40, and the other end Grounded respectively, one end of the crosslinking resistors R8, R19, R30 and R41 are respectively connected to one end of the sampling resistors R7, R18, R29, R40 and the sources of the field effect transistors Q1, Q2, Q3, Q4 in the power output circuit, The other end is respectively connected to the positive input terminals of operational amplifiers U2:1, U2:2, U2:3, and U2:4, and the negative input terminals of operational amplifiers U2:1, U2:2, U2:3, and U2:4 are connected to adjustable rheostats The middle tap of W1, the negative pole of the voltage regulator diode D13 is connected to the upper end of the adjustable rheostat W1 and the integral capacitor, the positive electrode of the Zener diode D13 is connected to the lower end of the adjustable rheostat W1 and the lower end of the integral capacitor to ground, and the pull-up resistor R45 The lower end of the pull-up resistor R45 is connected to the negative pole of the Zener diode D13, and the upper end of the pull-up resistor R45 is connected to the power supply +24V.

The state display circuit U4 can be composed of light emitting diodes D1, D2, D3, D4, D5, D6, D7 and D8, current limiting resistors R4, R15, R26, R37, R11, R22, R33 and R44, cross-linking resistors R2, R9, R13 , R20, R24, R31, R35 and R42, triodes Q6, Q7, Q10, Q11, Q14, Q15, Q18 and Q19, and base lower bias current resistors R3, R14, R25 and R36: the positive ends of the above light-emitting diodes are connected to The output end (24V) of the power conversion circuit U3, its negative electrode is respectively connected to the upper and lower ends of the current limiting resistors R4, R15, R26, R37, R11, R22, R33 and R44 in U4, and is respectively connected to the triodes Q6, Q7, Q10, Q11 , the collectors of Q14, Q15, Q18 and Q19, the emitters of which are all grounded, the bases of the triodes Q6, Q10, Q14 and Q18 are respectively connected to the upper ends of the base lower bias current resistors R3, R14, R25 and R36, and the base lower bias current The lower ends of resistors R3, R14, R25, and R36 are all grounded, one end of R42, and the other ends of cross-linked resistors R9, R20, R31, and R42 are respectively connected to the sources of field effect transistors Q1, Q2, Q3, and Q4 of the power output circuit U6. The two ends of the crosslinking resistors R2, R13, R24, and R35 are respectively connected to the bases of the triodes Q6, Q10, Q14, and Q18 and the gates of the field effect transistors Q1, Q2, Q3, and Q4 in the power supply output circuit U6 .

The power supply output circuit U6 can be composed of pull-up resistors R1, R12, R23 and R34, field effect transistors Q1, Q2, Q3 and Q4: the upper ends of the above-mentioned resistors are respectively connected to the OUT end (24V) of the PW in the power conversion circuit U3, and the lower ends are respectively Connect the gates of the field effect transistors Q1, Q2, Q3 and Q4 of the power supply output circuit U6, the drains are respectively connected to the seventh line in the four RJ45 sockets, and the sources are respectively connected to the sampling resistors in the power supply current acquisition circuit U2 The upper end of R7, R18, R29 and R40.

The reset circuit U5 can be composed of isolation diodes D9, D10, D11 and D12, NAND gates (such as model CD4011) U1:1, U1:2, U1:3 and U1:4, pull-down resistors R6, R17, R28 and R39, and transistor Q5 , Q9, Q13 and Q17, cross-linking resistors R5, R16, R27 and R38, and tact switch S1: the anodes of the isolation diodes are connected to the upper end of S1, the cathodes are respectively connected to the upper ends of the pull-down resistors, and the lower ends are grounded. The lower end of the switch S1 is connected to the power supply +24V, the left input port of the above-mentioned NAND gate is respectively connected to the collectors of the transistors (such as model 8050) Q6, Q10, Q14 and Q18 in the state display circuit U4, and the right input port of the above-mentioned NAND gate is respectively Connect the cathode of the above-mentioned isolation diode, the output port of the above-mentioned NAND gate is respectively connected to the bases of the triodes (such as 8050) Q5, Q9, Q13, Q17 through cross-linking resistors R5, R16, R27, R38, and the emitters of the triodes are respectively Connect the gates of field effect transistors (such as IRF630) Q1, Q2, Q3, and Q4 in the power supply output circuit U6, and the collectors of transistors Q5, Q9, Q13, and Q17 are all grounded.

The overcurrent protection circuit U1 can be composed of unidirectional thyristors (such as MCR100-8) Q8, Q12, Q16 and Q20, integrating capacitors C2, C4, C6 and C8, cross-linking resistors R10, R21, R 32 and R43: the above unidirectional thyristor The anodes are respectively connected to the gates of field effect transistors Q1, Q2, Q3, and Q4 of the power output circuit, and the cathodes thereof are respectively grounded, and their control electrodes are respectively connected to the power supply current acquisition circuit U2 through cross-link resistors R10, R21, R32, and R43. The output terminals of the operational amplifiers U2: 1, U2: 2, U2: 3, U2: 4, the upper ends of the integrating capacitors C2, C4, C6, and C8 are respectively connected to the front ends of the cross-linking resistors R10, R21, R32, and R43, and the integrating capacitor C2 , The lower ends of C4, C6, and C8 are grounded.

After power-on, the above-mentioned circuit processes the current and signal sent by the first-layer power supply equipment, and becomes the current and signal of the second-layer power supply equipment to supply power to the next-layer electrical equipment, that is, through four RJ456 sockets (L15, L16, L17, L18) wiring power supply to the user.

Claims (7)

1; a kind of telecommunication network secondary electric supply installation; by cabinet; power supply and main circuit board are formed; it is characterized in that: information input socket RJ45 is arranged on its cabinet panel; the information of equal number and power supply output socket RJ45; far-end send electricity and signal input socket RJ45 and far-end to send electricity and signal output socket RJ45; the power work status indicator lamp of each delivery outlet; its power supply is 48V; the 24V DC power supply; the current foldback circuit U1 that contains overcurrent protection output termination supply current Acquisition Circuit U2 input in its main circuit board circuit; the power source conversion input is connected the power-switching circuit U3 that far-end send electricity and signal port output and supply current Acquisition Circuit U2 input respectively with output; state shows that input connects the status display circuit U4 of supply current Acquisition Circuit U2 output; the input/output terminal that resets connects the reset circuit U5 of supply current Acquisition Circuit U2 output and output power output circuit input respectively; the power input/output terminal connects the output power output circuit U6 of reset circuit U5 output and supply current Acquisition Circuit U2 input and information and power supply output socket RJ45 respectively; supply current is gathered input/output terminal and is connected power-switching circuit U3 respectively; the supply current Acquisition Circuit U2 of current foldback circuit U1 and output power output circuit U6 output and circuit U 4 inputs, also comprise two mutual two-way connections and two-way respectively connection upper level switch and teletransmission send the RJ45 socket of electric switch; the teletransmission of two-way connection upper level switch send electricity and signal output port to be connected this teletransmission and to send the teletransmission of electricity and signal output port to send electricity and signal input port with two-way.

2, a kind of telecommunication network secondary electric supply installation according to claim 1 is characterized in that: power-switching circuit (U3) can by power supply (PW-Power) be connected its output (OUT) and form to the integrating capacitor (C10) on ground.

3, a kind of telecommunication network secondary electric supply installation according to claim 1, it is characterized in that: supply current Acquisition Circuit (U2) can be by integrating capacitor (C1, C3, C5, C7, C9), sample resistance (R7, R18, R29, R40), operational amplifier (U2:1, U2:2, U2:3, U2:4), crosslinked resistance (R8, R19, R30, R41), zener diode (D13) and adjustable rheostat (W1) are formed: integrating capacitor (C1, C3, C5, C7) a end connects sample resistance (R7 respectively, R18, R29, R40) a end, the other end is ground connection respectively, crosslinked resistance (R8, R19, R30, R41) a end connects sample resistance (R7 respectively, R18, R29, R40) with power output circuit in field effect transistor (Q1, Q2, Q3, Q4) end that source electrode is connected, the other end is concatenation operation amplifier (U2:1 respectively, U2:2, U2:3, U2:4) positive input terminal, operational amplifier (U2:1, U2:2, U2:3, U2:4) negative input end connects the centre tap of adjustable rheostat (W1), the negative pole of zener diode (D13) is connecting the upper end of adjustable rheostat (W1) and integrating capacitor, the positive pole of zener diode (D13) is connecting the lower end of adjustable rheostat (W1) and the lower end ground connection of integrating capacitor, the lower end of pull-up resistor R45 connects the negative pole of zener diode (D13), and the upper end of pull-up resistor (R45) connects power supply+24V.

4, a kind of telecommunication network secondary electric supply installation according to claim 1, it is characterized in that: status display circuit U4 can be by Light-Emitting Diode (D1, D2, D3, D4, D5, D6, D7 and D8), current-limiting resistance (R4, R15, R26, R37, R11, R22, R33 and R44), crosslinked resistance (R2, R9, R13, R20, R24, R31, R35, R42), triode (Q6, Q7, Q10, Q11, Q14, Q15, Q18, Q19) biasing resistance (R3 under the base stage, R14, R25 and R36) to form: above-mentioned Light-Emitting Diode anode is being connected the output (24V) in the power-switching circuit 9 (U3) respectively, its negative pole is connecting the current-limiting resistance (R4 in (U4) respectively, R15, R26, R37, R11, R22, R33, R44) upper and lower side, and connect triode (Q6 respectively, Q7, Q10, Q11, Q14, Q15, Q18, Q19) collector electrode, the equal ground connection of its emitter, triode (Q6, Q10, Q14, Q18) base stage connects biasing resistance (R3 under the base stage respectively, R14, R25, R36) upper end, biasing resistance (R3 under the base stage, R14, R25, R36) the equal ground connection in lower end, resistance (R42) end and crosslinked resistance (R9, R20, R31, R42) the other end connects the field effect transistor (Q1 of power output circuit (U6) respectively, Q2, Q3, Q4) source electrode, crosslinked resistance (R2, R13, R24, R35) two ends are connecting triode (Q6 respectively, Q10, Q14, Q18) field effect transistor (Q1 in base stage and the output power output circuit (U6), Q2, Q3, Q4) grid.

5, a kind of telecommunication network secondary electric supply installation according to claim 1, it is characterized in that: output power output circuit U6 can be by pull-up resistor (R1, R12, R23, R34), field effect transistor (Q1, Q2, Q3, Q4) form: above-mentioned resistance upper end connects the OUT end (24V) of the PW1 among the power-switching circuit U3 respectively, its lower end connects field effect transistor (Q1 among the output power output circuit U6 respectively, Q2, Q3, Q4) grid, its drain electrode connects the 7th circuit in 4 RJ45 ports respectively, and its source electrode connects the sample resistance (R7 in the supply current Acquisition Circuit (U2) respectively, R18, R29, R40) upper end.

6, a kind of telecommunication network secondary electric supply installation according to claim 1, it is characterized in that: reset circuit (U5) can be by isolating diode (D9, D10, D11, D12), NAND gate (U1:1, U1:2, U1:3, U1:4), pull down resistor (R6, R17, R28, R39), triode (Q5, Q9, Q13, Q17), crosslinked resistance (R5, R16, R27, R38), touch-switch (S1) is formed: the anodal common upper end that connects touch-switch S1 of above-mentioned isolating diode, its negative pole connects above-mentioned pull down resistor upper end respectively, the equal ground connection in its lower end, the lower end of touch-switch S1 connects power supply+24V; The collector electrode of triode (Q6, Q10, Q14, Q18) among the input port difference connection status display circuit U4 of an above-mentioned NAND gate left side, the right input port of above-mentioned NAND gate connects above-mentioned isolating diode negative pole respectively, the output port of above-mentioned NAND gate is connecting the base stage of triode (Q5, Q9, Q13, Q17) respectively by crosslinked resistance (R5, R16, R27, R38), the emitter of its triode connects the grid of the field effect transistor (Q1, Q2, Q3, Q4) in the output power output circuit (U6), the equal ground connection of collector electrode of triode (Q5, Q9, Q13, Q17) respectively.

7; a kind of telecommunication network secondary electric supply installation according to claim 1; it is characterized in that: current foldback circuit (U1) can be by unidirectional thyristor (Q8; Q12; Q16; Q20); integrating capacitor (C2; C4; C6; C8); crosslinked resistance (R10; R21; R32; R43) form: the anode of above-mentioned unidirectional thyristor connects the field effect transistor (Q1 of power output circuit respectively; Q2; Q3; Q4) grid; and its negative electrode difference ground connection; its control utmost point is respectively by crosslinked resistance (R10; R21; R32; R43) operational amplifier (U2:1 in the connection supply current Acquisition Circuit (U2); U2:2; U2:3; U2:4) output; integrating capacitor (C2; C4; C6; C8) upper end connects crosslinked resistance (R10 respectively; R21; R32; R43) front end, integrating capacitor (C2; C4; C6; C8) lower end ground connection.

Images