CN106707866A

CN106707866A - Double-CPU smoke alarm

Info

Publication number: CN106707866A
Application number: CN201611253301.0A
Authority: CN
Inventors: 邢永胜
Original assignee: Tianjin Jin Li Hua Electronics Co Ltd
Current assignee: Tianjin Jin Li Hua Electronics Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2017-05-24

Abstract

The invention discloses a double-CPU smoke alarm, and the smoke alarm comprises a housing, a color liquid crystal screen, and a key module. The smoke alarm also comprises a power module disposed in the housing, a communication module, a double-CPU processing circuit module and a liquid crystal screen processing module, wherein the communication module, the double-CPU processing circuit module and the liquid crystal screen processing module are respectively connected with the power module. The communication module is connected with the double-CPU processing circuit module, and the key module, the double-CPU processing circuit module and the liquid crystal screen processing module are connected sequentially. Compared with the prior art, the invention has the remarkable advantages and beneficial effects that the circuit employs a double-CPU mode; one CPU completes the operation in a system and the other CPU completes the communication with a locomotive TMS; the CPUs are connected in a mode of serial port communication; the main CPU achieves a communication access mode with one main unit and many slave units. The 20MA communication is employed between the slave units and the main unit, and the anti-interference capability of the smoke alarm is stronger than that of a conventional smoke alarm.

Description

Dual processors pyralarm

Technical field

The invention belongs to prevention and control device, more particularly to a kind of dual processors pyralarm.

Background technology

Once there is the life security for being possible to threaten people in fire, especially in the space of the closings such as subway train In, personnel are difficult to flee from time, so pyralarm largely affects the life security of passenger.Existing pyrotechnics report Alert device uses black and white liquid crystal display, and interface pixel is low, and figure is simple, significantly impacts the extension of its function.

The content of the invention

Problem to be solved by this invention is to overcome the deficiencies in the prior art, there is provided a kind of interface is more excellent good, Image, the picture of fine definition, the dual processors pyralarm beneficial to its Function Extension of complexity can be shown.

The present invention solves its technical problem and takes following technical scheme to realize：

A kind of dual processors pyralarm, including housing, color LCD screen and key-press module, and be arranged in housing Power module, the communication module being connected with power module, dual processors processing circuit module and liquid crystal display processing module；Described is logical News module is connected with dual processors processing circuit module, key-press module, dual processors processing circuit module, liquid crystal display processing module phase successively Even.

Described power module including protective tube, filter capacitor, choke coil, rectifier bridge and two dc-dcs, will Voltage conversion is converted into 5V by another dc-dc again into 24V and two groups of 12V, wherein 24V.

Described communicating circuit is made up of upper strata communication module and lower floor's communication module, and upper strata communication module is using 20mA electricity Stream communication modes transmission data, upper strata communication module is connected with the 20mA PORT COMs of vehicle-mounted TMS, realizes data exchange；Lower floor Communication module uses RS485 data communications, and lower floor's communication is by the data exchange with the RS485 PORT COMs of 8 slaves, collection Go out 8 current states of slave.

Described dual processors processing circuit module is by two pieces of singlechip groups into wherein U1 single-chip microcomputers are external as host scm There are clock chip, eeprom chip and RAM chip, U7 receives host scm data, and handle as from single-chip microcomputer by TTL serial ports Host scm data are uploaded to upper strata communication interface, and this kind of scheme is advantageous in that the continuity for realizing communicating with vehicle-mounted TMS, main Some time order errors of single-chip microcomputer can be corrected by from single-chip microcomputer, be not in pyrotechnics main frame disconnected with vehicle-mounted TMS communications From.

Described liquid crystal display processing module by MAX232 as the acp chip with liquid crystal display data exchange, using RS232 Communication modes, color screen can realize higher-quality interface is clear degree, the more a plurality of fault message of Display on the same screen and fire alarm information, More complicated operation interface and more excellent operating experience, realizes more preferable man-machine interaction.

The present invention has significant advantage and beneficial effect compared with prior art：Dual processors pattern, one are employed in circuit Work in individual CPU completion systems, another CPU completes the communication work with locomotive TMS, in serial communication form between CPU Connection, wherein host CPU realizes the communications access mode of many slaves of a main frame.20MA communications are employed between slave and locomotive, The not former pyralarm of antijamming capability more strength.

Brief description of the drawings

Fig. 1 is circuit structure block diagram of the invention；

Fig. 2 is the circuit diagram of power module of the invention；

Fig. 3 is the circuit diagram of communication module of the invention；

Fig. 4 is dual processors process circuit host CPU circuit diagram of the invention；

Fig. 5 is dual processors process circuit of the invention from CPU and peripheral components circuit diagram；

Fig. 6 is liquid crystal display processing module of the invention.

Specific embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to provided according to the present invention specific embodiment, structure, feature and its Effect, describes in detail as after.

As shown in Figure 1：A kind of dual processors pyralarm, including housing, 4.7 cun of color LCD screens and key-press module, and The power module in housing is arranged on, communication module, dual processors processing circuit module and the liquid crystal display treatment being connected with power module Module；Described communication module is connected with dual processors processing circuit module, key-press module, dual processors processing circuit module, liquid crystal display Processing module is sequentially connected.

As shown in Figure 2：The supply standard voltage DC24V of described power module, power supply can terminal access, mistake by two pins ten thousand Protective tube, filter capacitor, choke coil, 2A/400V rectifier bridges enter two DC-DC conversions of HDA16-24S24, HDA16-24S12 Device is converted into two groups of voltages of 24V and 12V, and wherein 24V is converted into 5V by HDA16-24S5 again.

As shown in Figure 3：Described communicating circuit is made up of upper strata communication module and lower floor's communication module, upper strata communication module Data are transmitted using 20mA electric currents communication modes, wherein by HCPL-4100 types optocoupler, RD30MB diodes and 1000pF Electric capacity composition data sending terminal mouthful, receiving port is constituted by 74LS240, TLP-550 type optocoupler and other auxiliary elements, on Layer communication module is connected with the 20mA PORT COMs of vehicle-mounted TMS, realizes data exchange；Lower floor's communication module uses RS485 data Communication, using T175176 as core, is aided with outer member, lower floor's communication by with the RS485 PORT COMs of 8 slaves Data exchange, gathers out 8 current states of slave.

As shown in Figure 4,5：Described dual processors process circuit circuit is by two pieces of W77E516 singlechip groups into wherein U1 monolithics Machine is circumscribed with clock chip, eeprom chip and RAM chip as host scm, and U7 is connect as from single-chip microcomputer by TTL serial ports Host scm data are received, and host scm data are uploaded to upper strata communication interface, this kind of scheme is advantageous in that realization and car The continuity of TMS communications is carried, some time order errors of host scm can be corrected by from single-chip microcomputer, be not in pyrotechnics Main frame communicates dialysis with vehicle-mounted TMS.

As shown in Figure 6：Described liquid crystal display processing module by MAX232 as the acp chip with liquid crystal display data exchange, Using RS232 communication modes, color screen can realize higher-quality interface is clear degree, the more a plurality of fault message of Display on the same screen and Fire alarm information, more complicated operation interface and more excellent operating experience, realizes more preferable man-machine interaction.

One embodiment of the present of invention has been described in detail above, but the content is only preferable implementation of the invention Example, it is impossible to be considered as limiting practical range of the invention.All impartial changes made according to the present patent application scope and improvement Deng all should still belong within patent covering scope of the invention.

Claims

1. a kind of dual processors pyralarm, it is characterised in that：Including housing, color LCD screen and key-press module, and it is arranged on Power module in housing, the communication module being connected with power module, dual processors processing circuit module and liquid crystal display processing module； Described communication module is connected with dual processors processing circuit module, key-press module, dual processors processing circuit module, liquid crystal display treatment mould Block is sequentially connected.

2. dual processors pyralarm according to claim 1, it is characterised in that：Described power module including insurance Pipe, filter capacitor, choke coil, rectifier bridge and two dc-dcs, convert voltage to 24V and two groups of 12V, and wherein 24V is again 5V is converted into by another dc-dc.

3. dual processors pyralarm according to claim 1, it is characterised in that：Described communicating circuit is communicated by upper strata Module and lower floor's communication module composition, upper strata communication module transmit data, upper strata communication module using 20mA electric currents communication modes It is connected with the 20mA PORT COMs of vehicle-mounted TMS, realizes data exchange；Lower floor's communication module uses RS485 data communications, and lower floor leads to News gather out 8 current states of slave by the data exchange with the RS485 PORT COMs of 8 slaves.

4. dual processors pyralarm according to claim 1, it is characterised in that：Described dual processors processing circuit module by Two pieces of singlechip groups are into wherein U1 single-chip microcomputers are circumscribed with clock chip, eeprom chip and RAM chip, U7 as host scm Host scm data are received by TTL serial ports as from single-chip microcomputer, and host scm data are uploaded to upper strata communication interface.

5. dual processors pyralarm according to claim 1, it is characterised in that：Described liquid crystal display processing module by MAX232 as the acp chip with liquid crystal display data exchange, using RS232 communication modes.