CN106353378A - Wireless CO monitor system - Google Patents
Wireless CO monitor system Download PDFInfo
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- CN106353378A CN106353378A CN201610874951.0A CN201610874951A CN106353378A CN 106353378 A CN106353378 A CN 106353378A CN 201610874951 A CN201610874951 A CN 201610874951A CN 106353378 A CN106353378 A CN 106353378A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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Abstract
The invention provides a wireless CO gas monitor system, which comprises a power module, a sensor module, a controller module and an A/D conversion module and further comprises a short message receiving and dispatching module, wherein the controller module is connected with the power module, the sensor module, the A/D conversion module and the short message receiving and dispatching module. The wireless CO gas monitor system can effectively perform stable and accurate monitor on CO gas, avoid a traditional wired communication method and enable a gas monitor to be capable of communicating with a control center in a long distance; the wireless CO gas monitor system is a design of a CO gas monitor based on a TC35 GSM module and is mainly characterized by being capable of using SIM to perform data transmission.
Description
Technical field
The present invention relates to gas-monitoring field is and in particular to a kind of wireless co gas-monitoring instrument system.
Background technology
At present, the security incident of gas leakage often occurs in the place such as chemical industry, colliery and family.Specifically, mainly
Co gas occurs in that leakage, leads to personnel to be poisoned to death.Therefore, in chemical industry, add in the monitoring system on the ground such as colliery and be directed to co
The detecting system of gas is necessary.In the prior art, common co gas monitoring instrument and the communication modes base of control centre
Originally use can bus communication mode, rs485 bus and rs232 bus, but the Direct Communication of can bus distance is maximum
Can only achieve 10 meters, the maximum communication distance of rs485 bus is 1200 meters, the maximum communication distance of rs232 bus is 15.4 meters.
Either that communication modes all has the restriction of distance, thus determines control centre and has stationarity.
Content of the invention
It is an object of the invention to: for co gas monitoring instrument system communication set forth above apart from limited problem, this
A kind of wireless co gas-monitoring instrument system of bright offer.
The technical solution used in the present invention is as follows:
A kind of wireless co gas test instrument system, including power module, sensor assembly, controller module and a/d conversion
Module, also includes receiving short message module.
Further, described controller module and power module, sensor assembly, a/d modular converter and receiving short message
Module connects.
Further, in described power module, the p10 port of single-chip microcomputer u2 and the sda port of single-chip microcomputer u7, single-chip microcomputer u6
Sda port and the interface 5 of port j3 connect, the a- port of single-chip microcomputer u7, a1 port, a2 port and gnd port ground connection, monolithic
The vdd port of machine u7 connects power supply, and wp port is grounded, and the p11 port interface of single-chip microcomputer u1 connects the scl port of single-chip microcomputer u6, monolithic
The scl port of machine u7 and the interface 4 of port j3, the vdd port of single-chip microcomputer u6 is grounded by electric capacity c12, ocsi port and osco
Port connects crystal oscillating circuit, and vss port is grounded, and int port connects the interface 2 of port j3 and one end of NAND gate u3a, and the one of NAND gate
Terminating resistor r18 one end and key switch s7 one end, the key switch s7 other end is grounded, and the NAND gate u3a other end connects single-chip microcomputer
The shdn end of u9, the in port of single-chip microcomputer u9 and ilim port connect anode and electric capacity c10 positive pole, and inductance l1 mono- terminates battery
Positive pole and electric capacity c10 positive pole, the inductance l1 other end connects the lx port of single-chip microcomputer u9, battery cathode and electric capacity c10 minus earth, single
The out port of piece machine u9 is grounded by torch c9, and pgnd port and agnd port are grounded.
Further, in described controller module, the rd port of single-chip microcomputer u2 and wr port connect NAND gate u3b, reset end
Mouth connects reset circuit, and the p16 port of single-chip microcomputer u2 connects the interface 6 of key switch s1 one end and port j4, and p17 port connects button and opens
Close the interface 5 of s2 one end and port j4, int1 port connects the interface 3 of key switch s3 one end and port j4, int0 port connect by
The interface 4 of key switch s4 one end and port j4, p16 port connects the interface 1 of key switch t1 one end and port j4, key switch
S1, key switch s2, key switch s3, the other end ground connection of key switch s4, key switch s5 and key switch s6.
Further, in described receiving short message module, the ccgnd port of single-chip microcomputer u8 is connected with the interface 29 of port j1
Connect, ccdet2 port is connected with interface 24 and interface 29, cci0 interface is connected with interface 26, ccvcc interface and interface 24 and connect
Mouth 28 connection, ccrst interface and interface 25 connect, and ccclk interface and interface 27 connect.
Further, in described a/d modular converter, the p13 port of single-chip microcomputer u2 connects the dclck port of single-chip microcomputer u1, single
The p14 port of piece machine u2 connects the dout port of single-chip microcomputer u1, and the p15 port of single-chip microcomputer u2 connects the cs port of single-chip microcomputer u1, monolithic
+ vcc the port of machine u1 meets electric capacity c3 and resistance r13 one end, electric capacity c3 other end ground connection, the resistance r13 other end and electric capacity c4 mono-
End connects, and the electric capacity c4 other end is grounded, and the vref end of single-chip microcomputer u1 is grounded by electric capacity c8, and-in end and gnd end are grounded ,+in end
Connect the interface 6 of integrated chip a3.
Further, described sensor assembly collects, and integrated chip a3 interface 6 and interface 2 are in parallel with resistance r6, resistance r5
In parallel with electric capacity c6 and slide rheostat r7, the interface 7 of integrated chip a3 is grounded by electric capacity c7, interface 3 and slide rheostat
R14 one end connects, and resistance r14 scribing end is connected with resistance r6, and integrated chip a3 interface 2 passes through resistance r4 and integrated chip a2
Interface 6 connects, interface 4 power supply of integrated chip a2, and interface 6 and interface 2 are in parallel with electric capacity c15, and resistance r10 and electric capacity c15 is simultaneously
Connection, resistance r10 is in parallel with resistance r1 and resistance rt, and interface 2 is connected with the interface 2 of switch s8, and the interface 7 of integrated chip passes through electricity
Hold c5 ground connection, interface 3 is connected with electric capacity c13 one end and slide rheostat r18 one end, electric capacity c13 other end ground connection, interface 3 and
The interface 3 of integrated chip a1 connects, and the interface 3 of switch s8 and interface 4 are connected with resistance r23 and resistance r24, the interface of switch s8
1 is connected with resistance r9 one end, and the resistance r9 other end is connected with co sensor one end and audion q1 emitter stage, the collection of audion q1
Electrode is connected with co sensor one end and resistance r2 one end, and audion q1 base stage connects power supply, the co sensor other end and integrated core
Piece a1 6 connects, and resistance r2 is connected with integrated chip a1 2, and integrated chip interface 2 and interface 6 are parallel with electric capacity c1, connect
Mouth 6 connects power supply by resistance r3, and interface 7 is grounded by electric capacity c2, and integrated circuit a1 3 is connected with integrated chip a2 3.
In sum, due to employing technique scheme, the invention has the beneficial effects as follows:
Effectively co gas stably can accurately be monitored, and departing from traditional wire communication mode, so that gas is supervised
Survey instrument can relatively communicated with control centre at a distance, the present invention is setting of the co gas monitoring instrument based on tc35gsm module
Meter, it is mainly characterized by applying sim to carry out data transfer.
Brief description
Fig. 1 is circuit diagram of the present invention；
Specific embodiment
All features disclosed in this specification, in addition to mutually exclusive feature and/or step, all can be with any
Mode combines.
With reference to Fig. 1, the present invention is elaborated.
The design of the co gas monitoring instrument based on tc35gsm module, it is mainly characterized by applying sim to carry out data biography
Pass.Co gas concentration monitoring instrument is used to measure the portable intelligent instrument of relevant environment in the air co content.At present, domestic co
Gas monitoring instrument has been come most commonly by can bus, rs485 bus or rs232 bus with the data communication of control centre
Become.The communication distance of rs232 bus is 12m, and maximum is up to 15.4m；The communication distance of rs485 bus is 1200m.Can bus
Direct Communication distance maximum up to 10km.But which kind of mode all has the restriction of distance. and finally determine in control
The stationarity of the heart.The increasingly fierce .gsm module of the rapid popularization with gsm mobile communications network and competition is as a kind of main
Gsm network access equipment. application is more and more extensive, and has developed multiple applications having very promising prospects.
Tc35 pattern block is the main function components of terminal, by gsm baseband processor, power supply special IC, radio frequency
The part such as circuit and flash memory forms, and is responsible for processing audio frequency in gsm cellular device, data and signal, embedded software
Part execution application interface and the function at all gsm agreement stations.Baseband processor comprises all moulds of cellular radio part, several turns
Changing function, the requirement growing for meeting gsm, pcs phone user market. just can support in the case of without external circuitses
Fr, hr and efr voice and chnnel coding.Radio frequency part is based on smarti type circuit. and the antenna cable in module is connected to gsc class
50 ω adapters of type.Tc35 module is suitable for the gsm cellular device of minimum power. and the application obscure portions of this cellular device constitute people
Machine interface (mmi).Tc35 be can access by serial ports (rs232).Tc35 passes through 40 pin zif and connects cellular application part, and zif connects
Device provides the application interface of control data, audio signal and power line.The running voltage of terminal system is 5vdc.Due to tc35's
Up to 3a. therefore additional voltage-stabilizing device must reach the condition enough to provide this rated current to burst power consumption current peak.At this eventually
In end.Complete the conversion of 12v to 5v using lm2596 type Switching Power Supply. as the power supply of tc35 terminal.It should be noted that.By
Lm2596 completes Switching Power Supply conversion needs powerful inducer and capacitor. to improve energy storage capacity. meet the consumption of tc35
Electricity requires.
There is the structure of portable co gas concentration monitoring instrument of gsm functions for sending and receiving short messages as shown in the figure.The author develops
Monitor be mainly used in public place and the monitoring of some workshop in the air co concentration. using battery as power supply electricity
The nap-505 type electrochemical transducer[sensor that source .co sensor n1 is produced from Japanese Nemoto ＆ Co., Ltd.Sensor
Output current is linear with co gas concentration.A1 (op90) can ensure that working electrode and reference electrode isoelectric level.Sensor is defeated
Go out the voltage that o μ a～70 μ a electric current is converted into 0v～o.7v through integrated chip (op90), to ensure when co concentration is 0 " during 10-3
A3 is output as 0v～2.5v, to meet the input requirements of md transducer u.i (ads7822).Integrated chip op90 has inside
Zeroing circuit. allow instrumentation amplifier to provide zero real input zero output operation.The temperature characterisitic constant b of nap-505 is 3
The ntc thermal resistor of 435k compensates, and temperature is after overcompensation. and its output is at -10 DEG C " disclosure satisfy that essence in the range of 50 DEG C
Degree requires.
Claims (7)
1. a kind of wireless co gas test instrument system, including power module, sensor assembly, controller module and a/d modulus of conversion
Block is it is characterised in that also include receiving short message module.
2. wireless co gas test instrument system according to claim 1 is it is characterised in that described controller module and power supply
Module, sensor assembly, a/d modular converter and receiving short message module connect.
3. wireless co gas test instrument system according to claim 1 is it is characterised in that in described power module, monolithic
The p10 port of machine u2 is connected with the interface 5 of the sda port of single-chip microcomputer u7, the sda port of single-chip microcomputer u6 and port j3, single-chip microcomputer
The a- port of u7, a1 port, a2 port and gnd port ground connection, the vdd port of single-chip microcomputer u7 connects power supply, and wp port is grounded, monolithic
The p11 port interface of machine u1 connects the interface 4 of the scl port of single-chip microcomputer u6, the scl port of single-chip microcomputer u7 and port j3, single-chip microcomputer
The vdd port of u6 is grounded by electric capacity c12, and ocsi port and osco port connect crystal oscillating circuit, and vss port is grounded, and int port connects
The interface 2 of port j3 and one end of NAND gate u3a, terminating resistor r18 one end for NAND gate and key switch s7 one end, button
Switch s7 other end ground connection, the NAND gate u3a other end connects the shdn end of single-chip microcomputer u9, the in port of single-chip microcomputer u9 and ilim port
Connect anode and electric capacity c10 positive pole, inductance l1 mono- termination anode and electric capacity c10 positive pole, inductance l1 other end order piece
The lx port of machine u9, battery cathode and electric capacity c10 minus earth, the out port of single-chip microcomputer u9 is grounded by torch c9, pgnd end
Mouth and agnd port ground connection.
4. wireless co gas test instrument system according to claim 1 is it is characterised in that in described controller module, single
The rd port of piece machine u2 and wr port connect NAND gate u3b, and reset port connects reset circuit, and the p16 port of single-chip microcomputer u2 connects button
Switch s1 one end and the interface 6 of port j4, p17 port connects the interface 5 of key switch s2 one end and port j4, int1 port connect by
The interface 3 of key switch s3 one end and port j4, int0 port connects the interface 4 of key switch s4 one end and port j4, and p16 port connects
The interface 1 of key switch t1 one end and port j4, key switch s1, key switch s2, key switch s3, key switch s4, presses
The other end ground connection of key switch s5 and key switch s6.
5. wireless co gas test instrument system according to claim 1 is it is characterised in that described receiving short message module
In, the ccgnd port of single-chip microcomputer u8 is connected with the interface 29 of port j1, and ccdet2 port is connected with interface 24 and interface 29,
Cci0 interface is connected with interface 26, and ccvcc interface is connected with interface 24 and interface 28, and ccrst interface and interface 25 connect,
Ccclk interface and interface 27 connect.
6. wireless co gas test instrument system according to claim 1 is it is characterised in that in described a/d modular converter, single
The p13 port of piece machine u2 connects the dclck port of single-chip microcomputer u1, and the p14 port of single-chip microcomputer u2 connects the dout port of single-chip microcomputer u1, single
The p15 port of piece machine u2 connects the cs port of single-chip microcomputer u1, and+vcc the port of single-chip microcomputer u1 connects electric capacity c3 and resistance r13 one end, electricity
Hold c3 other end ground connection, the resistance r13 other end is connected with electric capacity c4 one end, and the electric capacity c4 other end is grounded, the vref of single-chip microcomputer u1
End is grounded by electric capacity c8, and-in end and gnd end are grounded, and+in terminates the interface 6 of integrated chip a3.
7. wireless co gas test instrument system according to claim 1 is it is characterised in that described sensor assembly collects,
Integrated chip a3 interface 6 and interface 2 are in parallel with resistance r6, and resistance r5 is in parallel with electric capacity c6 and slide rheostat r7, integrated chip
The interface 7 of a3 is grounded by electric capacity c7, and interface 3 is connected with slide rheostat r14 one end, and resistance r14 scribing end is with resistance r6 even
Connect, integrated chip a3 interface 2 is connected with the interface 6 of integrated chip a2 by resistance r4, interface 4 power supply of integrated chip a2, connect
Mouth 6 and interface 2 are in parallel with electric capacity c15, and resistance r10 is in parallel with electric capacity c15, and resistance r10 is in parallel with resistance r1 and resistance rt, interface
2 are connected with the interface 2 of switch s8, and the interface 7 of integrated chip is grounded by electric capacity c5, and interface 3 is become with electric capacity c13 one end and slip
Resistance device r18 one end connects, and the electric capacity c13 other end is grounded, and interface 3 is connected with the interface 3 of integrated chip a1, the interface 3 of switch s8
Connect with resistance r23 and resistance r24 with interface 4, the interface 1 of switch s8 is connected with resistance r9 one end, the resistance r9 other end and co
Sensor one end and audion q1 emitter stage connect, and the colelctor electrode of audion q1 is connected with co sensor one end and resistance r2 one end
Connect, audion q1 base stage connects power supply, the co sensor other end is connected with integrated chip a1 6, resistance r2 and integrated chip a1
Interface 2 connects, and integrated chip interface 2 and interface 6 are parallel with electric capacity c1, and interface 6 connects power supply by resistance r3, and interface 7 passes through electricity
Hold c2 ground connection, integrated circuit a1 3 is connected with integrated chip a2 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874951.0A CN106353378A (en) | 2016-09-30 | 2016-09-30 | Wireless CO monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874951.0A CN106353378A (en) | 2016-09-30 | 2016-09-30 | Wireless CO monitor system |
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| CN106353378A true CN106353378A (en) | 2017-01-25 |
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| CN201610874951.0A Pending CN106353378A (en) | 2016-09-30 | 2016-09-30 | Wireless CO monitor system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802154A (en) * | 2017-05-04 | 2018-11-13 | 亚德诺半导体集团 | Improve the Sensor bias of noiseproof feature |
-
2016
- 2016-09-30 CN CN201610874951.0A patent/CN106353378A/en active Pending
Non-Patent Citations (4)
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| 杨雪、王秋光: "ADS7822及其在CO气体浓度监测仪中的应用", 《电子工程师》 * |
| 杨雪、王秋光: "CO气体浓度监测仪低功耗设计", 《哈尔滨理工大学学报》 * |
| 杨雪、王秋光: "TC35型短消息收发模块在CO气体监测仪中的应用", 《国外电子元器件》 * |
| 杨雪: "基于短消息的CO气体浓度监测仪的研制", 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802154A (en) * | 2017-05-04 | 2018-11-13 | 亚德诺半导体集团 | Improve the Sensor bias of noiseproof feature |
| TWI695167B (en) * | 2017-05-04 | 2020-06-01 | 百慕達商亞德諾半導體環球無限公司 | Interface circuit for electrochemical sensor |
| US10862436B2 (en) | 2017-05-04 | 2020-12-08 | Analog Devices International Unlimited Company | Sensor bias circuit for improved noise performance |
| CN108802154B (en) * | 2017-05-04 | 2024-04-12 | 亚德诺半导体国际无限责任公司 | Sensor bias circuit for improving noise performance |
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