Evacuation system monitoring device

Abstract

The utility model relates to the technical field of evacuation control, and provides an evacuation system monitoring device which comprises a main control unit. The first optocoupler isolation module, the second optocoupler isolation module, the third optocoupler isolation module, the fourth optocoupler isolation module, the fifth optocoupler isolation module, the touch screen, the display unit, the RS485 communication module, the RS232 communication module, the two-bus communication module, the power input module, the power detection module and the power switching control module are all connected with the main control unit. The first optocoupler isolation module is connected with the linkage detection module, the second optocoupler isolation module is connected with the feedback output module, the third optocoupler isolation module is connected with the RS485 communication module and the fourth optocoupler isolation module, and the RS232 communication module and the fifth optocoupler isolation module are connected with the two-bus communication module. The power switching control module is connected with the power input module, the mains supply, the standby battery and the power detection module, and the power detection module is connected with the mains supply.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of evacuation control technology, especially relates to an evacuation system monitoring device. BACKGROUND

[0002] The statements in this part only provide background technical information related to the utility model and do not necessarily constitute prior art.

[0003] The evacuation system monitoring device is used for controlling and displaying the working state of the control and display device of centralized control type fire emergency lamps, emergency lighting centralized power supply, emergency lighting distribution electric device, emergency lighting distribution box and related accessories. The monitoring device and the connected power supply and lamps adopt two-bus communication mode for communication. The monitoring device is used as the monitoring master station of two-bus communication.

[0004] The traditional monitoring device touch screen has high cost, few external interfaces, single communication interface, complex wiring, cannot work after power failure and inconvenient maintenance. UTILITY MODEL CONTENTS

[0005] In order to solve the technical problems that the touch screen two-bus communication of the evacuation system monitoring device needs external communication conversion module, input detection and output control need special external module, and cannot work after power failure, the utility model provides an evacuation system monitoring device.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an evacuation system monitoring device, which comprises a main control unit, and a first optocoupler isolation module, a second optocoupler isolation module, a third optocoupler isolation module, a fourth optocoupler isolation module, a fifth optocoupler isolation module, a touch screen, a display unit, an RS485 communication module, an RS232 communication module, a two-bus communication module, a power input module, a power detection module and a power switching control module all connected with the main control unit, the first optocoupler isolation module is connected with a linkage detection module, the second optocoupler isolation module is connected with a feedback output module, the third optocoupler isolation module is connected with the RS485 communication module, the fourth optocoupler isolation module is connected with the RS232 communication module, the fifth optocoupler isolation module is connected with the two-bus communication module, the power switching control module is connected with the power input module, a commercial power supply, a backup battery and the power detection module, and the power detection module is connected with the commercial power supply.

[0008] Further, the linkage detection module adopts an EL357NB chip, a first port of the EL357NB chip is grounded, a second port of the EL357NB chip is connected with the master control unit and one end of a resistor R47 respectively, the other end of the resistor R47 is connected with VCC, a third port of the EL357NB chip is connected with one end of a resistor R48, the other end of the resistor R48 is connected with a negative electrode of a diode D8 and a first port of an external terminal P3, a second port of the external terminal P3 is connected with a positive electrode of the diode D8 and a negative electrode of a diode D9 respectively, and a positive electrode of the diode D9 is connected with a fourth port of the EL357NB chip.

[0009] Further, the feedback output module comprises a resistor R45, one end of the resistor R45 is connected with the master control unit, the other end of the resistor R45 is connected with one end of a resistor R46, one end of a capacitor C45 and a base of a triode Q2 respectively, the other end of the resistor R46, the other end of the capacitor C45 and an emitter of the triode Q2 are grounded, a collector of the triode Q2 is connected with a negative electrode of a diode D11, a positive electrode of the diode D11 is connected with a positive electrode of a diode D10 and a No.8 pin of a relay K1 respectively, a negative electrode of the diode D10 is connected with a No.1 pin of the relay K1 and VCC respectively, a No.3 pin and a No.4 pin of the relay K1 are connected with an external terminal P4, and a No.5 pin and a No.6 pin of the relay K1 are connected with an external terminal P6.

[0010] Further, the master control unit is further connected with a first isolation DC-DC module, and the first isolation DC-DC module is connected between the RS485 communication module and the RS232 communication module and the power input module.

[0011] Further, the master control unit is further connected with a second isolation DC-DC module, and the second isolation DC-DC module is connected between the display unit and the power input module.

[0012] Further, the display unit comprises a display screen and a touch screen.

[0013] Further, the second isolation DC-DC module is connected with the touch screen, and the touch screen is connected with the display screen.

[0014] Further, the power input module is connected with a power switching control module.

[0015] Further, the voltage detection module adopts a voltage transformer.

[0016] Further, the master control unit adopts an STM32F429IGT6 chip.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses a two bus communication module, linkage detection module (input sampling circuit), feedback output module (output control circuit), power detection module and power switching control circuit are added outside traditional touch screen circuit. BRIEF DESCRIPTION OF DRAWINGS

[0019] The description and drawings of the utility model constitute a part of the utility model and are used to provide further understanding on the utility model, and the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation on the utility model.

[0020] Figure 1 It is the structure diagram of the evacuation system monitoring device shown by the utility model;

[0021] Figure 2 It is the circuit diagram of the main control unit shown by the utility model;

[0022] Figure 3 It is the circuit diagram of the linkage detection module and the first opto-coupler isolation module shown by the utility model;

[0023] Figure 4 It is the circuit diagram of the feedback output module shown by the utility model;

[0024] Figure 5 It is the circuit diagram of the RS485 communication module shown by the utility model;

[0025] Figure 6 It is the circuit diagram of the RS232 communication module shown by the utility model. DETAILED DESCRIPTION

[0026] The utility model will be further explained in connection with the drawings and the embodiment.

[0027] It should be pointed out that the following detailed explanation is all exemplary, and aims at providing further explanation on the utility model. Unless otherwise indicated, all the technical and scientific terms used in this paper have the same meaning as that understood by the ordinary skilled in the art to which the utility model belongs.

[0028] It is to be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should be further understood that the terms "comprise" and / or "include" when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof.

[0029] As Figure 1 shown, the embodiment provides a kind of evacuation system monitoring device, comprising: main control unit, and first opto-coupler isolation module, second opto-coupler isolation module, third opto-coupler isolation module, fourth opto-coupler isolation module, fifth opto-coupler isolation module, touch screen, display unit, linkage detection module, feedback output module, RS485 communication module, RS232 communication module, two bus communication module, first isolated DC-DC module, second isolated DC-DC module, power input module, power switching control module, mains power supply, standby battery and power detection module, which are connected with main control unit.

[0030] As Figure 2 shown, the main control unit uses STM32F429IGT6 chip (only part of pin is drawn in the figure), which is internally provided with LCD drive, need not external drive chip and is directly connected with display unit.

[0031] Wherein, display unit includes touch screen and display screen. Display screen uses 7 inch liquid crystal display screen and is connected with main control unit through LTDC interface. Mainly display the working state of centralized control type fire emergency lamp, emergency lighting centralized power supply, emergency lighting distribution device and emergency lighting distribution box and related accessories. The touch screen uses 7 inch resistance type touch screen, low cost, sensitive operation, adapt to complex electromagnetic environment, with higher touch response speed and clear display effect. Touch screen is close to display screen and is connected with main control unit through SPI interface, and is mainly used for control operation.

[0032] Wherein, first opto-coupler isolation module is connected with linkage detection module, and the linkage detection module collects input linkage signal, and uses first opto-coupler isolation module to isolate input end and sampling end.

[0033] As Figure 3As shown, the linkage detection module and the first optocoupler isolation module comprise an EL357NB chip, a first port of the EL357NB chip is grounded, a second port of the EL357NB chip is connected to the master control unit and one end of a resistor R47 respectively, the other end of the resistor R47 is connected to VCC, a third port of the EL357NB chip is connected to one end of a resistor R48, the other end of the resistor R48 is connected to a negative electrode of a diode D8 and a first port of an external terminal P3, a second port of the external terminal P3 is connected to a positive electrode of the diode D8 and a negative electrode of a diode D9 respectively, and a positive electrode of the diode D9 is connected to a fourth port of the EL357NB chip.

[0034] The first optocoupler isolation module, the second optocoupler isolation module, the third optocoupler isolation module, the fourth optocoupler isolation module and the fifth optocoupler isolation module can all adopt an optocoupler, for example, an EL357NB chip, which is not limited in the embodiment.

[0035] In some embodiments, the second optocoupler isolation module is connected to a feedback output module, the feedback output module feeds back the linkage signal, and an optocoupler is adopted to control the signal isolation between the control end and the output end. Figure 4 As shown, the feedback output module comprises a resistor R45, one end of the resistor R45 is connected to the master control unit, the other end of the resistor R45 is connected to one end of a resistor R46, one end of a capacitor C45 and a base of a triode Q2 respectively, the other end of the resistor R46, the other end of the capacitor C45 and an emitter of the triode Q2 are all grounded, a collector of the triode Q2 is connected to a negative electrode of a diode D11, a positive electrode of the diode D11 is connected to a positive electrode of a diode D10 and a No.8 pin of a relay K1 respectively, a negative electrode of the diode D10 is connected to a No.1 pin of the relay K1 and VCC respectively, a No.3 pin and a No.4 pin of the relay K1 are connected to an external terminal P4, and a No.5 pin and a No.6 pin of the relay K1 are connected to an external terminal P6.

[0036] In some embodiments, the third optocoupler isolation module is connected to an RS485 communication module. Figure 5 As shown, the RS485 communication module comprises a CA-IF4820HS chip, wherein RO represents a receiver output, DI represents a driver input, RE represents a receiver output enable (low-level reception enable), DE represents a driver output enable (high-level transmission enable), RE and DE are usually connected together, controlled through IO (EN), A and B represent driver output / receiver input (differential line). The pull-up and pull-down resistors are connected to the A and B lines to ensure that the CA-IF4820HS chip is in an idle state when there is no connection.

[0037] In some embodiments, the fourth optocoupler isolation module is connected to an RS232 communication module. Figure 6As shown, the RS232 communication module adopts MAX232 chip, T1IN (11 pin) and T2IN (10 pin) of MAX232 chip are connected with TXD pin of the master control unit through optical coupling isolation module respectively, for receiving TTL level data sent by the master control unit.R1OUT (12 pin) and R2OUT (9 pin) of MAX232 chip are connected with RXD pin of the master control unit through isolation module respectively, for sending RS232 level data (TTL level data after conversion) to the master control unit.T1OUT (14 pin) and T2OUT (7 pin) of MAX232 chip are connected with RXD pin of PC machine serial port DB9 plug respectively, for sending RS232 level data to the PC machine.R1IN (13 pin) and R2IN (8 pin) of MAX232 chip are connected with TXD pin of PC machine serial port DB9 plug respectively, for receiving RS232 level data (TTL level data after conversion) sent by the PC machine.

[0038] In some embodiments, the fifth optical coupling isolation module is connected with the two-bus communication module.

[0039] Specifically, the RS485 communication module and the RS232 communication module are connected with the first isolation DC-DC module, the first isolation DC-DC module and the second isolation DC-DC module are connected with the power input module, the power input module is connected with the power switching control module, the power switching control module is connected with the commercial power supply, the backup battery and the power detection module respectively, the power detection module is connected with the commercial power supply, the second isolation DC-DC module is connected with the touch screen, and the touch screen is connected with the display screen.

[0040] The power unit is used as system power supply input, and the commercial power supply is used as power supply of the two-bus communication unit.The commercial power supply is reduced by the first isolation DC-DC to be RS232 and RS485 communication power supply, and the commercial power supply is reduced by the second isolation DC-DC to be power supply of the master control unit, the display screen and the touch screen.

[0041] The two-bus communication unit and the master control unit are powered and signal double-isolated through optical coupling and isolation power supply.The direct path of electric signal can be cut off without destroying the integrity of the signal, so as to prevent the generation of ground loop, reduce electromagnetic interference, improve the stability and safety of the system, and realize power supply and communication function of the monitoring host and the centralized control type fire emergency lamp, emergency lighting centralized power supply, emergency lighting distribution device, emergency lighting distribution box and related accessories.

[0042] The utility model discloses a power supply detection module, the power supply detection module connects host computer unit, and the mains and the standby battery are connected power switch control module, and the power switch control module is also connected with host computer unit, when the mains has electricity, uses mains power supply, after the mains has no electricity, passes through power switch control module, makes the standby power supply access circuit, and supplies power for the rest parts, realizes the seamless switching of the power supply of screen, when the mains fails, the screen still can work. Thus avoid the mains failure and cause communication interruption, lead to the loss of evacuation system monitoring data, guarantee the stability of communication, improve the accuracy of evacuation system monitoring. In the utility model, the place that relates to software process or method is all realized with the existing program.

[0043] Specifically, the voltage detection module can be realized by a voltage transformer, or other circuits, and those skilled in the art can design according to specific working conditions, which is not described in detail here.

[0044] The utility model discloses integrated two bus master station communication, does not need to reduce the connection of external communication module, and only needs two lines to complete power supply and signal transmission, significantly reduces the construction and cable cost, and facilitates maintenance.

[0045] The touch screen of the evacuation system monitoring device adds RS232 and RS485 communication, supports various communication networks, and improves system compatibility and communication diversity.

[0046] The utility model integrates power supply detection and switching control, input detection, output control and other functions, realizes power supply detection and switching under the premise of not adding module, linkage input and feedback function, increases the integration of system, and reduces external wiring.

[0047] The above only for the preferred embodiment of the utility model, and does not limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A monitoring device for an evacuation system, characterized in that, include: The main control unit, along with a first optocoupler isolation module, a second optocoupler isolation module, a third optocoupler isolation module, a fourth optocoupler isolation module, a fifth optocoupler isolation module, a touch screen, a display unit, an RS485 communication module, an RS232 communication module, a two-bus communication module, a power input module, a power detection module, and a power switching control module, all connected to the main control unit. The first optocoupler isolation module is connected to the linkage detection module, the second optocoupler isolation module is connected to the feedback output module, the third optocoupler isolation module is connected to the RS485 communication module, the fourth optocoupler isolation module is connected to the RS232 communication module, the fifth optocoupler isolation module is connected to the two-bus communication module, and the power switching control module is connected to the power input module, the mains power supply, the backup battery, and the power detection module. The power detection module is connected to the mains power supply.

2. The evacuation system monitoring device according to claim 1, characterized in that, The linkage detection module uses an EL357NB chip. The first port of the EL357NB chip is connected to the main control unit and one end of resistor R47. The other end of resistor R47 is connected to VCC. The second port of the EL357NB chip is grounded. The third port of the EL357NB chip is connected to the positive terminal of diode D9. The fourth port of the EL357NB chip is connected to one end of resistor R48. The other end of resistor R48 is connected to the negative terminal of diode D8 and the first port of external terminal P3. The second port of external terminal P3 is connected to the positive terminal of diode D8 and the negative terminal of diode D9.

3. The evacuation system monitoring device according to claim 1, characterized in that, The feedback output module includes: a resistor R45, one end of which is connected to the main control unit, and the other end of which is connected to the first port of the EL357NB chip. The second port of the EL357NB chip is grounded, and the fourth port of the EL357NB chip is connected to the positive terminal of the isolation power supply. The third port of the EL357NB chip is connected to one end of a resistor R46, one end of a capacitor C45, and the base of a transistor Q2. The other ends of resistor R46, capacitor C45, and the emitter of transistor Q2 are all grounded. The collector of transistor Q2 is connected to the cathode of diode D11. The anode of diode D11 is connected to the anode of diode D10 and pin 8 of relay K1. The cathode of diode D10 is connected to pin 1 of relay K1 and the positive terminal of the isolation power supply. Pins 3 and 4 of relay K1 are connected to external terminal P4, and pins 5 and 6 of relay K1 are connected to external terminal P6.

4. The evacuation system monitoring device according to claim 1, characterized in that, The main control unit is also connected to a first isolated DC-DC module, which is connected between the RS485 communication module, the RS232 communication module, and the power input module.

5. The evacuation system monitoring device according to claim 1, characterized in that, The main control unit is also connected to a second isolated DC-DC module, which is connected between the display unit and the power input module.

6. The evacuation system monitoring device according to claim 5, characterized in that, The display unit includes a display screen and a touch screen.

7. The evacuation system monitoring device according to claim 6, characterized in that, The second isolated DC-DC module is connected to the touchscreen, and the touchscreen is connected to the display screen.

8. The evacuation system monitoring device according to claim 1, characterized in that, The power input module is connected to the power switching control module.

9. The evacuation system monitoring device according to claim 1, characterized in that, The power detection module uses a voltage transformer.

10. The evacuation system monitoring device according to claim 1, characterized in that, The main control unit uses the STM32F429IGT6 chip.

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