CN203435006U

CN203435006U - Bus isolator

Info

Publication number: CN203435006U
Application number: CN201320328607.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Qingdao Topscomm Communication Co Ltd
Current assignee: Qingdao Topscomm Communication Co Ltd
Priority date: 2013-06-08
Filing date: 2013-06-08
Publication date: 2014-02-12
Anticipated expiration: 2023-06-08

Abstract

The utility model discloses a bus isolator which adopts a two-wire system, is non-polar and belongs to the field of power supply bus technology. The bus isolator comprises a shell and an internal hardware circuit and is characterized in that the hardware circuit comprises a bus communication module, an LED drive module, a bus detection and control module, a main controller module and a bus voltage detection module. The bus communication module can achieve the functions of bus communication and electricity taking only with the use of two wires; the LED drive module indicates the working state of two output buses in a PWM control mode and reduces power consumption; the bus fault detection and relay control module can control on/off of two relays and detect the working state of the two output buses, and the two output buses are non-polar; the main controller module can report fault information to a controller which locates a fault point; and the bus voltage detection module can monitor voltages of the buses in real time.

Description

Buses isolator

Technical field

The utility model belongs to field bus technique application, is specifically related to a kind of buses isolator that uses two-wire system, nonpolarity, the bussing technique of can powering.

Background technology

At present, in bus network, during a certain branch, short-circuit, can be by whole bus network short circuit, cause other branch road communication failure, in addition, when the industry wiring of long distance, the device in bus is very easy to be struck by lightning, because stored charge, electrical potential difference, factors such as surge voltage and destroying.

This buses isolator, leads the equal short circuit of quick each branch road of whole bus network because of a certain branch, short-circuit and causes the problem of communication failure to design in order to solve bus network.

Utility model content

The utility model provides a kind of two-wire system, nonpolarity, bus of can powering used to prop up the buses isolator of art, comprise housing and internal hardware circuit, it is characterized in that: described hardware circuit comprises bus communication module (1), LED driver module (2), bus detection and control module (3), main controller module (4), bus voltage detection module (5), wherein:

Bus communication module (1), this circuit input end is nonpolarity with two, the bus of can powering (BUS1, BUS2) is connected, receiving data terminal (RXD) is connected with main controller module (4) with transmission data terminal (TXD), DC5V power supply is provided to main controller module (4), the output of DC20V power supply is connected with LED driver module (2), bus voltage detection module (5) respectively;

LED driver module (2), this circuit is connected with bus communication module (1), main controller module (4) respectively, utilizes PWM modulation system to control opening and closing of metal-oxide-semiconductor, after metal-oxide-semiconductor is opened, DC20V power supply is to induction charging energy storage, metal-oxide-semiconductor is from opening and being transformed into and closing, and inductance produces inverse electromotive force, inductance and LED formation loop, LED lights, the energy that LED utilizes inductance to store is luminous, reduced power supply power consumption, and brightness is higher;

Bus failure detects and relay control module (3), this circuit is connected with main controller module (4), main controller module (4) is by 4 I/O mouths (first via: CH11, CH12, the second tunnel: CH21, CH22) relay of bus failure detection and relay control module (3) is controlled, thereby control the break-make of two-way output bus (first via: BUSOUT11, BUSOUT12, the second tunnel: BUSOUT21, BUSOUT22); In addition, main controller module (4) is by detecting I/O mouth (first via: BUSBAD1, the second tunnel: state BUSBAD2), the malfunction of judgement two-way output bus;

Bus voltage detection module (5), this circuit is connected with bus communication module (1), main controller module (4) respectively, the analog quantity voltage signal collecting can be converted to digital quantity signal, Real-Time Monitoring bus voltage, guarantees the stable operation of detector;

The utility model adopts following technical scheme:

1) bus communication module (1) adopts XY001B chip.XY001B chip oneself power consumption is low, and operating voltage is wide, and antijamming capability is strong, and communication speed is high.

2) bus message information is directly inputted XY001B chip after outside bridge rectifier, is completed the modulation /demodulation function of digital communication by XY001B chip.

3) described LED driver module (2) can be indicated the operating state of two-way output bus.

4) described bus detection and control module (3) can detect the operating state of two-way output bus.

5) described bus detects and the nonpolarity bus of the exportable two-way of control module (3).

6) buses isolator detects after bus failure, can be by fault information reporting to controller, and by controller, fault point is positioned.

7) buses isolator detection failure state voluntarily, after bus failure is got rid of, buses isolator can automatically restore to normal operating conditions, also can to it, manually be recovered by controller.

Accompanying drawing explanation

Fig. 1 is the hardware principle block diagram of the utility model embodiment;

Fig. 2 is the electrical schematic diagram of the utility model embodiment bus communication module (1);

Fig. 3 is the electrical schematic diagram of the utility model embodiment LED driver module (2);

Fig. 4 is the electrical schematic diagram of the detection of the utility model embodiment bus failure and relay control module (3);

Fig. 5 is the electrical schematic diagram of the utility model embodiment bus voltage sampling module (5).

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.

Fig. 1 is the hardware principle block diagram of the utility model embodiment, buses isolator receives bus signals (BUS1 or BUS2), modulation through bus communication module (1), be converted to transmitted signal TXD, receive signal RXD, finally enter main controller module (4), complete the communication of main controller module and bus.Main controller module (4) provides two-way PWM modulation signal to control LED driver module (2) work, control signal (first via: CH11, the CH12 of two-way relay are provided, the second tunnel: CH21, CH22), main controller module (4) detects two-way bus failure signal (BUSBAD1, BUSBAD2) in addition.

Fig. 2 is the circuit theory diagrams of the bus communication module (1) of the utility model embodiment, this circuit be take XY001B chip as core, bus message information is directly inputted chip through outside bridge rectifier by BUS1 or BUS2, and chip RXD, TXD signal can directly be inputted single-chip microcomputer.During reception, bus signals, through outside bridge rectifier reverse, through the demodulation of XY001B chip internal, is opened drain electrode output RXD signal, finally outputs on the RXD pin of main controller module (4).During transmission, the TXD pin of main controller module (4) is connected on the TXD pin of XY001B chip, and through XY001B chip internal, modulation is modulated to the Transistor-Transistor Logic level signal of TXD in bus TXD signal.

Fig. 3 is the hardware elementary diagram (hardware elementary diagram on the second tunnel in like manner) of LED driver module (2) first via of the utility model embodiment.Utilize the PWM modulation system of main controller module (4) to control opening and closing of metal-oxide-semiconductor, after metal-oxide-semiconductor is opened, DC20V power supply is to induction charging energy storage, metal-oxide-semiconductor is from opening and being transformed into and closing, and inductance produces inverse electromotive force, inductance and LED formation loop, LED lights, the energy that LED utilizes inductance to store is luminous, reduced power supply power consumption, and brightness is higher.

Fig. 4 is the bus failure detection of the utility model embodiment and the hardware elementary diagram of relay control module (3).Main controller module (4) is by 4 I/O mouths (first via: CH11, CH12, the second tunnel: CH21, CH22) relay of bus failure detection and relay control module (3) is controlled, thereby control the break-make of two-way output bus (first via: BUSOUT11, BUSOUT12, the second tunnel: BUSOUT21, BUSOUT22); In addition, main controller module (4) is by detecting I/O mouth (first via: BUSBAD1, the second tunnel: state BUSBAD2), the malfunction of judgement two-way output bus.

Fig. 5 is the hardware elementary diagram of the bus voltage sampling module (3) of the utility model embodiment.Utilize the AD sampling functions of main controller module (4), the analog quantity voltage signal collecting is converted to digital quantity signal, Real-Time Monitoring bus voltage, guarantees the stable operation of detector

The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a buses isolator that uses two-wire system, nonpolarity, the bussing technique of can powering, comprise housing and internal hardware circuit, it is characterized in that: described hardware circuit comprises bus communication module (1), LED driver module (2), bus detection and control module (3), main controller module (4), bus voltage detection module (5), wherein:

Bus communication module (1), this circuit input end is nonpolarity with two, the bus B of can powering US1, BUS2 are connected, DC5V power supply, reception data terminal RXD and transmission data terminal TXD are connected with main controller module (4), and the output of DC20V power supply is connected with LED driver module (2), bus voltage detection module (5) respectively;

LED driver module (2), this circuit is connected with bus communication module (1), main controller module (4) respectively, utilizes PWM modulation system to control opening and closing of metal-oxide-semiconductor, after metal-oxide-semiconductor is opened, DC20V power supply is to induction charging energy storage, metal-oxide-semiconductor is by after opening and being transformed into and closing, and inductance produces inverse electromotive force, inductance and LED formation loop, LED lights, the energy that LED utilizes inductance to store is luminous, reduced power supply power consumption, and brightness is higher;

Bus failure detects and relay control module (3), this circuit is connected with main controller module (4), main controller module (4) is by 4 I/O mouth CH11, CH12 and CH21, CH22, relay to bus failure detection and relay control module (3) is controlled, thereby controls the break-make of two-way output bus BUSOUT11, BUSOUT12 and BUSOUT21, BUSOUT22; In addition, main controller module (4), by detecting the state of I/O mouth BUSBAD1 and BUSBAD2, judges the malfunction of two-way output bus;

Bus voltage detection module (5), this circuit is connected with bus communication module (1), main controller module (4) respectively, the analog quantity voltage signal collecting can be converted to digital quantity signal, Real-Time Monitoring bus voltage, guarantees the stable operation of isolator.

2. buses isolator according to claim 1, is characterized in that: described bus communication module (1) adopts XY001B chip.

3. buses isolator according to claim 1, is characterized in that: described bus communication module (1) only needs two lines can realize bus communication and two functions of power taking.

4. buses isolator according to claim 1, is characterized in that: described LED driver module (2) can be indicated the operating state of two-way output bus.

5. buses isolator according to claim 1, is characterized in that: described bus detection and control module (3) can detect the operating state of two-way output bus.

6. buses isolator according to claim 1, is characterized in that: described bus detects and the nonpolarity bus of the exportable two-way of control module (3).

7. buses isolator according to claim 1, is characterized in that: buses isolator detects after bus failure, can be by fault information reporting to controller, and by controller, fault point is positioned.