Combustible gas probe
Technical field
The present invention relates to a kind of combustible gas probe, multiple combustible gas probes such as particularly a kind of indoor and outdoor place coal gas, rock gas, hydrogen, carbon monoxide, organic vapor.
Background technology
At present, combustible gas probe has various ways, as the point type combustible gas probe, infrared combustible gas probe etc., these combustible gas probes mainly are to utilize gas sensor, carry out chemical reaction by itself and near inflammable gas, thereby the resistance characteristic that causes gas sensor changes, determine the concentration that detector leaks inflammable gas on every side according to the size of change in resistance, and report to the police, these combustible gas probes all adopt sound and light alarm basically on type of alarm, and sound and light alarm mainly exists following defective: sound and light alarm is adjusted the distance and is had limitation, as personnel during away from the combustible gas probe installation site, be difficult to hear alerting signal, that is to say to be difficult to come the perception scene whether abnormal conditions such as leakage have taken place, exist very big potential safety hazard by acousto-optic; Simultaneously sound and light alarm also can cause interference to personnel that near the life combustible gas probe or work are housed etc.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of simple in structure, utilize abnormal conditions such as leakage that existing GSM mobile communication network will detect to send the terminal device that the note form sends the control personnel to, i.e. combustible gas bulk detector.
The technical scheme that realizes above-mentioned purpose is: a kind of combustible gas probe, comprise casing, last wiring board, following wiring board, battery, last wiring board, following wiring board, battery is fixed in the casing, battery is electrically connected with following wiring board, also comprise antenna module, probe assembly, antenna module includes antenna, probe assembly includes sensor, antenna module, probe assembly is installed in the outside of casing, the described wiring board of going up comprises the line bank mouth, the GSM/CDMA module, the SIM card seat, connector, the GSM/CDMA module is electrically connected with the SIM card seat, the GSM/CDMA module, the SIM card seat is electrically connected with the line bank mouth respectively, the line bank mouth is electrically connected with connector, the GSM/CDMA module is electrically connected with antenna module, described wiring board down comprises first connector, second connector, power interface, single-chip microcomputer, the 3rd connector, amplifying circuit, stabilivolt, stabilivolt is electrically connected with power interface, single-chip microcomputer respectively with second connector, the 3rd connector, amplifying circuit is electrically connected, battery is electrically connected with power interface, power interface is electrically connected with the 3rd connector, the 3rd connector is electrically connected with last wiring board by connector, amplifying circuit is electrically connected with first connector, and first connector is electrically connected with probe assembly.
Further, the described GSM/CDMA module that goes up in the wiring board is electrically connected with the line bank mouth by winding displacement, 1 of SIM card seat, 2,3,4,6,7,24 of 8 pin and line bank mouth, 25,26,27,28,29 pin are electrically connected, the line bank mouth directly is electrically connected with connector, the GSM/CDMA module is electrically connected with antenna in the antenna module by lead, 1 of stabilivolt in the following wiring board, 2,1 of 3 pin and power interface, 2,3 pin are electrically connected, single-chip microcomputer directly is electrically connected with second connector, 32 of single-chip microcomputer, 33 pin are electrically connected with the 3rd connector, 59 pin of single-chip microcomputer and 10 pin of amplifying circuit are electrically connected, battery is by 1 of lead and power interface, 2,3,4 pin are electrically connected, power interface directly is electrically connected with the 3rd connector, 2 of amplifying circuit, 3 of 15 pin and first connector, 4,5,6,7 pin are electrically connected, 3 of first connector, 4,5,6,7 pin are connected with the sensor electrical of probe assembly by lead.
Further, described GSM/CDMA module is a MC35I type gsm communication module.
Further, described antenna module also includes water proof rubber, gland bonnet, antenna fixture, and antenna and water proof rubber are inlaid in the antenna fixture.
Further, described probe assembly also includes installs housing, water proof rubber, probe assembly lid, metal flame proof sheet, and water proof rubber, metal flame proof sheet, sensor are inlaid in from outside to inside successively to be installed in the housing.
Further, described casing comprises housing, be positioned at the loam cake on housing top, be positioned at lower housing portion lower cover, be positioned at the plug at housing middle part, the cavity between loam cake and the housing is an epicoele, the cavity between lower cover and the housing is a cavity of resorption.
Further, the described wiring board of going up is installed in the epicoele of casing with following wiring board, and battery is installed in the cavity of resorption.
Further, described battery is fixed in the casing by bandage.
Further, for adding the skid mode, deck is connected between described GSM/CDMA module and the last wiring board.
Further, the sensor in the described probe assembly is the semi-conductor type combustible gas sensor.
After adopting technique scheme, the beneficial effect that brings is: (1), be skillfully constructed.With existing GSM network, be applied to this area; (2), report to the police convenient, fastly, realize radio alarming.The present invention utilizes existing GSM network, when combustable gas concentration reaches the warning limit value of setting, can send abnormal conditions such as detected leakage to the control personnel by sending the form of SMS, and is very convenient, fast, accurate; (3), the present invention is not subjected to distance limit, can not cause interference yet.Overcome the defective that traditional sound and light alarm is subjected to distance limit, and transmitted the interference that also can not cause in the information process other personnel; (4), the present invention is simple in structure, wiring is easy to maintenance.Casing of the present invention adopts the version of split, particularly adopt the casing structure form of forming by housing, the loam cake that engages with the housing top and bottom, lower cover three parts, when the maintenance wiring board, only need loam cake is opened and can be finished, and when needs are changed battery, only need lower cover is opened and can be finished, such structure is very simple, be convenient to the wiring mounting or dismounting in when maintenance again, also be not easy when wiring is keeped in repair, to cause the exposure of other parts and impaired; (5), applied widely.Because wiring board, following wiring board battery etc. all are contained in the tight anti-explosion housing of favorable sealing property in the present invention, antenna module carries out airtight when also being connected with casing with seal assembly, metal flame proof sheet also is housed in the probe assembly, these have all satisfied requirement explosion-proof, flame proof fully, therefore the present invention both had been applicable to indoor, also be applicable to outdoorly, have the abominable and workplace explosion-proof, that flame proof requires also very suitable for the underground gas well of situation complexity etc.; (6), the present invention can finish multiple preset function.As inflammable gas exceed standard warning, battery electric quantity warning etc.
Description of drawings
Fig. 1 is a sectional structure synoptic diagram of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the structural representation of antenna module of the present invention;
Fig. 4 is the structural representation of probe assembly of the present invention;
Fig. 5 is the structural representation of wiring board in the present invention;
Fig. 6 is the structural representation of wiring board under the present invention;
Fig. 7 is the structural representation of casing of the present invention;
Fig. 8 is a theory diagram of the present invention;
Fig. 9 is circuit theory diagrams one of the present invention;
Figure 10 is circuit theory diagrams two of the present invention;
Figure 11 is a principle of work synoptic diagram of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
Extremely shown in Figure 10 as Fig. 1, a kind of combustible gas probe, comprise casing 2, last wiring board 3, following wiring board 4, battery 7, also comprise antenna module 1, probe assembly 5, battery 7 is electrically connected with following wiring board 4, casing 2 comprises housing 2.2, be positioned at the loam cake 2.1 on housing 2.2 tops, be positioned at the lower cover 2.4 of housing 2.2 bottoms, be positioned at the plug 2.3 at housing 2.2 middle parts, the cavity that forms between loam cake 2.1 and the housing 2.2 is an epicoele 2.6, the cavity that forms between lower cover 2.4 and the housing 2.2 is a cavity of resorption 2.5, last wiring board 3 and following wiring board 4 are fixedly mounted in the epicoele 2.6 of casing 2, and battery 7 is fixed in the cavity of resorption 2.5 of casing 2 by bandage 6 tightens.Antenna module 1 includes antenna 1.2, also includes waterproof as glue 1.1, gland bonnet 1.3, antenna fixture 1.4, and antenna 1.2 and water proof rubber 1.1 are inlaid in the antenna fixture 1.4.Probe assembly 5 includes sensor 5.5, also include housing 5.1, water proof rubber 5.2, probe assembly lid 5.3, metal flame proof sheet 5.4 are installed, water proof rubber 5.2, metal flame proof sheet 5.4, sensor 5.5 are inlaid in from outside to inside successively to be installed in the housing 5.1, sensor 5.5 can adopt the semi-conductor type combustible gas sensor, model is a NT-CO type sensor, sensor includes detecting element and compensating element,, form electric bridge with two high bridge resistance R 1 and R10 in the external circuit, the voltage signal of electric bridge output and the concentration of inflammable gas are linear.Antenna module 1 by antenna fixture 1.4, probe assembly 5 by install housing 5.1 respectively with the outside Joint of casing.Last wiring board 3 comprises line bank mouth 3.1, GSM/CDMA module 3.2, SIM card seat 3.3, connector 3.4, GSM/CDMA module 3.2 adds the skid mode by deck and is fixedly connected on the wiring board 3, GSM/CDMA module 3.2 can adopt MC35I type gsm communication module, GSM/CDMA module 3.2 is electrically connected with SIM card seat 3.3, GSM/CDMA module 3.2 is electrically connected with line bank mouth 3.1 by winding displacement, SIM card is by 1 of SIM card seat 3.3,2,3,4,6,7,24 of 8 pin and line bank mouth 3.1,25,26,27,28,29 pin are electrically connected, line bank mouth 3.1 directly is electrically connected with connector 3.4, and GSM/CDMA module 3.2 is electrically connected with antenna 1.2 in the antenna module 1 by lead.Following wiring board 4 comprises first connector 4.1, second connector 4.2, power interface 4.3, single-chip microcomputer 4.4, the 3rd connector 4.5, amplifying circuit 4.6, stabilivolt 4.7, single-chip microcomputer 4.4 can adopt the MSP430 type, amplifying circuit 4.6 can adopt the SGM8544 type, stabilivolt 4.7 can adopt the 78L05 type, 1 of stabilivolt 4.7,2,1 of 3 pin and power interface 4.3,2,3 pin are electrically connected, 1 of second connector 4.2 that plays the effect of PC communication interface on the following wiring board 4,2,3 pin are electrically connected with the serial ports of master control computer, single-chip microcomputer 4.4 directly is electrically connected with second connector 4.2,59 pin of single-chip microcomputer 4.4 and 10 pin of amplifying circuit 4.6 are electrically connected, the signal of handling through single-chip microcomputer 4.4 passes through 32 of single-chip microcomputer 4.4,33 pin output to the 3rd connector 4.5, battery 7 is by 1 of lead and power interface 4.3,2,3,4 pin are electrically connected, power interface 4.3 directly is electrically connected with the 3rd connector 4.5, the 3rd connector 4.5 patches with connector 3.4 and is connected, being connected by the 3rd connector 4.5 and connector 3.4 like this, to descend wiring board 4 to be electrically connected with last wiring board 3, thereby make signal be transferred to GSM/CDMA module 3.2,2 of amplifying circuit 4.6,3 of 15 pin and first connector 4.1,4,5,6,7 pin are electrically connected, 3 of first connector 4.1,4,5,6,7 pin are electrically connected with the sensor 5.5 of probe assembly 5 by lead.
Working power of the present invention can be used 3 joint specialized lithium batteries, battery generally reaches 2 years serviceable life, its sensing range can reach 0~100%LEL, after the present invention carries out explosion-proof design, can be fit to the abominable place of environment, its explosive-proof grade can reach EXIDCT6, its shell protection grade can reach IP67, the present invention can adopt the RS232 communication standard, utilizes PC or PDA to communicate by letter with combustible gas probe, and detector is carried out the parameter setting.GSM/CDMA module 3.2 is supported the AT command set of standard.The information via coding back message length that is sent out is 140 bytes, so a short message can comprise 160 English alphabets (7 codings) or 70 Chinese characters at the most.The present invention is the very strong a kind of combustible gas probe of practicality.
Principle of work of the present invention is as follows: as Fig. 8, shown in Figure 11, probe assembly 5 of the present invention is used for perception and measures the electric signal such as concentration information of inflammable gas, probe assembly 5 amplifies perception and the electric signal such as combustable gas concentration information that measure by amplifying circuit 4.6 then, handle by the electric signal after 4.4 pairs of amplifications of single-chip microcomputer again, convert the electrical signal to digital signal, and compare with the warning limit value of setting, when combustable gas concentration reaches the warning limit value of setting, combustible gas leakage is described, at this moment single-chip microcomputer 4.4 will pass to the signal that exceeds standard GSM/CDMA module 3.2, be sent to antenna module 1 by GSM/CDMA module 3.2 again, antenna module 1 is by existing GSM network, send the short message alarm signal by the form that sends SMS to predefined equipment (mobile phone), allow the control personnel can in time obtain warning message, really realized the radio alarming function.The GSM/CDMA module 3.2 that goes up on the wiring board 3 of the present invention is connected with SIM card seat 3.3, SIM card is set up with the present invention by SIM card seat 3.3 and is got in touch, the master control computer expert crosses serial ports and is connected with second connector 4.2 that plays the effect of PC communication interface on the following wiring board 4, gets in touch thereby set up with the present invention.The present invention can finish multiple preset function, as inflammable gas exceed standard that warning, battery electric quantity are reported to the police, default phone number etc.