CN201057569Y - Digital quantity line-type heat detector based on bus technique - Google Patents
Digital quantity line-type heat detector based on bus technique Download PDFInfo
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- CN201057569Y CN201057569Y CNU2007200158862U CN200720015886U CN201057569Y CN 201057569 Y CN201057569 Y CN 201057569Y CN U2007200158862 U CNU2007200158862 U CN U2007200158862U CN 200720015886 U CN200720015886 U CN 200720015886U CN 201057569 Y CN201057569 Y CN 201057569Y
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Abstract
The utility model relates to a digital quantity linear temperature sensing fire detector. The technical scheme adopted by the utility model is that a microcomputer junction box and a temperature sensing cable form an integrated signal collection circuit, the temperature sensing cable is composed of a lead wire and an intelligent temperature detecting module, the lead wire is connected with the microcomputer junction box, and a plurality of intelligent temperature detecting modules are parallel connected between the lead wires. The lead wire is two or three lead wires which are mutually parallel or spirally intertwisted between each two intelligent temperature detecting modules. The intelligent temperature detecting module is composed of a voltage stabilizing circuit, an intelligent temperature sensor, a signal receiving circuit and a signal sending circuit, the output end of the voltage stabilizing circuit is respectively connected with the input ends of the intelligent temperature sensor, the signal receiving circuit and the signal sending circuit, the output end of the signal receiving circuit the input/output end of the intelligent temperature sensor, and the input/output end of the intelligent temperature sensor is connected with the input end of the signal sending circuit. The utility model not only can accurately measure the temperature of the overheating points, but also can accurately measure the position of the overheating points.
Description
Technical field:
The utility model relates to the fire alarm autoalarm, the particularly a kind of heat fire detector that can accurately measure alarm set point temperature and position thereof.
Background technology:
Existing line-type heat detector is formed by connecting temperature-sensing elements such as bimetallic strip, thermistor, thermopair, PTC or NTC between two detection leads, switching value or analog measurement heat spot temperature and position are adopted in temperature survey, adopt these temperature-sensing elements, when a plurality of series and parallel thermometric, temperature measurement accuracy is not high, accurately judge the wherein a certain position temperature-sensing element difficulty of being heated, thereby cause measuring the heat spot position deviation, the measuring distance error is big, fire can not accurately be reported to the police, and fails to report fire easily.
Summary of the invention:
In order to address the above problem, the utility model provides a kind of can accurately measure the temperature of heat spot and the novel digital quantity line-type heat detector based on bussing technique of position.The technical solution adopted in the utility model is: based on the digital quantity line-type heat detector of bussing technique, form a complete signal acquisition circuit by microcomputer terminal box and temperature sensing cable, temperature sensing cable is made up of lead and intelligent temperature detecting module, lead is connected with the microcomputer terminal box, some intelligent temperature detecting modules in parallel between the lead.
Described lead can be two leads or three leads.Two or three leads adopt be parallel to each other or between per two intelligent temperature detecting modules spiral stranded.
Described intelligent temperature detecting module is made up of mu balanced circuit, intelligent temperature sensor, signal receiving circuit and signal sending circuit, the output terminal of mu balanced circuit is connected with the input end of intelligent temperature sensor, signal receiving circuit and signal sending circuit respectively, the output terminal of signal receiving circuit is connected with the I/O end of intelligent temperature sensor, and the I/O end of intelligent temperature sensor is connected with the input end of signal sending circuit.
Mu balanced circuit obtains after power supply and the voltage stabilizing for intelligent temperature sensor, signal receiving circuit and signal sending circuit from two or three leads, signal receiving circuit received signal and be transformed into the receivable signal of intelligent temperature sensor from two or three leads, the signal that signal sending circuit sends intelligent temperature sensor is after modulation, send to the microcomputer terminal box by two or three leads, as Fig. 2, shown in Figure 8.
Based on the digital quantity line-type heat detector of bussing technique, also comprise an oversheath, in oversheath is coated on temperature sensing cable.
Be usually designed to: conductor length 20～200m, the intelligent temperature detecting module be spaced apart 0.2～1m.
The beneficial effects of the utility model are: the digital quantity line-type heat detector based on bussing technique is formed a complete signal acquisition circuit by microcomputer terminal box, temperature sensing cable, the microcomputer terminal box is used for gathering the temperature change value of temperature sensing cable, output alarm signal; Temperature sensing cable is the lead with two parallel equidistant or twisted wire, also can adopt the lead of three parallel equidistant or twisted wire, a plurality of intelligent temperature detecting modules in parallel on the lead, and each intelligent temperature detecting module has unique ID number.Because when adopting intelligent temperature detecting module thermometric, the intelligent temperature detecting module is only surveyed the temperature of its position, does not have the mutual interference relationships of temperature with other intelligent temperature detecting modules, is digital quantity with the temperature transition that records automatically simultaneously, and transmit, therefore measure accurately.Because the intelligent temperature detecting module has the ID electronic tag, the digital quantity of transmission temperature etc. also transmits ID electronic tag own, so have range finding accurately again.So the utility model can accurately be measured the heat spot temperature, also can accurately measure the position of heat spot.The utility model has been brought up to intelligent digital with traditional analog quantity and has been measured temperature, and the leap that the thermometric mode takes place brings great convenience to follow-up temperature data processing.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the circuit block diagram of embodiment 1;
Fig. 3 is the circuit theory diagrams of embodiment 1;
Fig. 4 is order, the data-modulated oscillogram that temperature sensor receives among the embodiment 1;
Fig. 5 is the oscillogram that temperature sensor sends data among the embodiment 1;
Fig. 6 is the structural representation of embodiment 2;
Fig. 7 is the structural representation of the utility model embodiment 3;
Fig. 8 is the circuit block diagram of embodiment 3;
Fig. 9 is the circuit theory diagrams of embodiment 3;
Figure 10 is order, the data-modulated oscillogram that temperature sensor receives among the embodiment 3;
Figure 11 is the oscillogram that temperature sensor sends data among the embodiment 3;
Figure 12 is the structural representation of embodiment 4.
Embodiment:
Embodiment is shown in Fig. 1～5:
Digital quantity line-type heat detector based on bussing technique, form a complete signal acquisition circuit by microcomputer terminal box 2 and temperature sensing cable, lead 1 and intelligent temperature detecting module 3 that temperature sensing cable is 20～200m by two length are formed, lead is connected with the microcomputer terminal box, two leads adopt the mode that is parallel to each other, and the intelligent temperature detecting module is connected between the lead so that 0.2～1m is equidistant.
In oversheath is coated on temperature sensing cable.
As shown in Figure 2, the intelligent temperature detecting module is made up of mu balanced circuit, intelligent temperature sensor, signal receiving circuit and signal sending circuit, the output terminal of mu balanced circuit is connected with the input end of intelligent temperature sensor, signal receiving circuit and signal sending circuit respectively, the output terminal of signal receiving circuit is connected with the I/O end of intelligent temperature sensor, and the I/O end of intelligent temperature sensor is connected with the input end of signal sending circuit.
Intelligent temperature sensor is U1 (DS18B20) digital temperature sensor of outsourcing.
Mu balanced circuit supplies digital temperature sensor, signal receiving circuit and signal sending circuit after two leads obtain power supply and voltage stabilizing, signal receiving circuit received signal and be transformed into the receivable signal of digital temperature sensor from two leads, the signal that signal sending circuit sends digital temperature sensor sends to the microcomputer terminal box by two leads after modulation.
Circuit theory as shown in Figure 3, mu balanced circuit has D1, R3, C1, R13, T5, V1, C2 to constitute; Intelligent temperature sensor is made up of U1 (DS18B20) digital temperature sensor, and its 3 pin connects power supply, 1 pin ground connection, and 2 pin connect signal receiving circuit and signal sending circuit; Signal receiving circuit has R5, R6, C3, R4, T1, R7, D2, R8, T2, R9, D3 to constitute; Signal sending circuit has R10, R11, T3, T4, R12 to constitute;
Under the control of microcomputer terminal box control command, as Fig. 3, by C3, R4, T1, R7, D2, R8, T2, R9, D3, the DQ of U1 receives order, U1 is according to the order that receives, after decoding, determine whether to answer or answer data, answer as needs, the DQ of U1 modulates the signal on the L+ by D3, R10, R11, T3, T4, R12, L+ is transferred to the microcomputer terminal box by R1, and the microcomputer terminal box is by computing, judgement, with its temperature, distance display or warning.Above-mentioned transmission circuit can transmit signal more than 500 meters.
As Fig. 3, wherein L1, L2 are power supply and data-modulated line, R1, R2 are the modulation signal current-limiting resistance, TP1 (L+) is a modulation back signal RTP, D1, R3, C1 constitute direct current 24V power supply, be that TP2 is 24V, R13, T5, V1, C2 are power supply adjustment and mu balanced circuit, obtaining TP3 (V+) is 3.6V, U1 is a digital temperature sensor, and 3 pin of U1 connect power supply+(being 3.6V), and 1 pin of U1 connects power supply ground, 2 pin of U1 are order and temperature data transmission ends, and order and temperature data transmission are carried out with serial mode.
(a) order, data-modulated waveform such as Fig. 4 of receiving of temperature sensor, signal high level 24V, signal low level 17V, Fig. 4 are L+ (TP1) waveform when locating to receive.When temperature sensor receives: 1. when the L+ low level, be coupled by C3, R4, through T1, R7, TP6 is high level, and wherein R5, R6 provide quiescent point for T1, and TP6 is through R8, T2, the R9 negative circuit, TP7 also is a low level, 2 pin of U1 are low level like this, it is signal low level among the L+, the DQ of U1 also is a low level, because TP7 is a low level, makes not conducting of D3, again because the TP6 high level, the D2 conducting makes the TP4 high level, and TP4 is through R10, T3, R11, making TP8 is low level, does not exert an influence to received signal.2. when the L+ high level, because C3, R4 are inoperative, according to reasoning 1., TP7 is a high level, and the DQ of U1 also is a high level, because the D3 conducting, TP8 is a low level, and TP8 has blocked the effect to signal, does not exert an influence to received signal equally.
When (b) the intelligent temperature detecting module sends data, 3. when the DQ of U1 high level, i.e. TP7 high level, as Fig. 3, through D3, the TP4 high level is through R10, T3, R11, make the TP8 low level, TP8 blocks T4, and TP5 does not produce effect through R12 and the same level of L+ to L+, making does not increase electric current on the L1, i.e. yet high level of L+ place.4. the DQ as U1 is a low level, and promptly TP7 is a low level, because C3, R4, inoperative, TP6 also is a low level, because R10 is a pull down resistor, TP4 then is a low level, TP4 is through T3, R11, and TP8 then is a high level, and TP8 is through T4, R12 has added a load current, about 100mA to L+, L+ has increased the 100mA electric current by R1 equally to L1, just can produce 100mA at the controller end like this and draw electric current, as Fig. 5, thereby the DQ that can detect U1 has sent a low level.
As shown in Figure 6, and the difference of embodiment 1 be exactly that two leads spiral between per two intelligent temperature detecting modules is stranded.
Embodiment is shown in Fig. 7～11:
Digital quantity line-type heat detector based on bussing technique, form a complete signal acquisition circuit by microcomputer terminal box 2 and temperature sensing cable, lead 1 and some intelligent temperature detecting modules 3 that temperature sensing cable is 20～200m by three length are formed, lead is connected with the microcomputer terminal box, three leads adopt the mode that is parallel to each other, and the intelligent temperature detecting module is connected between the lead so that 0.2～1m is equidistant.
In oversheath is coated on temperature sensing cable.
As shown in Figure 8, the intelligent temperature detecting module is made up of mu balanced circuit, intelligent temperature sensor, signal receiving circuit and signal sending circuit, the output terminal of mu balanced circuit is connected with the input end of intelligent temperature sensor, signal receiving circuit and signal sending circuit respectively, the output terminal of signal receiving circuit is connected with the I/O end of intelligent temperature sensor, and the I/O end of intelligent temperature sensor is connected with the input end of signal sending circuit.
Intelligent temperature sensor is U1 (DS18B20) digital temperature sensor of outsourcing.
Mu balanced circuit supplies digital temperature sensor, signal receiving circuit and signal sending circuit after three leads obtain power supply and voltage stabilizing, signal receiving circuit received signal and be transformed into the receivable signal of digital temperature sensor from three leads, the signal that signal sending circuit sends digital temperature sensor sends to the microcomputer terminal box by three leads after modulation.
Circuit theory diagrams as shown in Figure 9, mu balanced circuit has D1, R3, C1, R13, T5, V1, C2 to constitute; Intelligent temperature sensor is made up of U1 (DS18B20) digital temperature sensor, and its 3 pin connects power supply, 1 pin ground connection, and 2 pin connect signal receiving circuit and signal sending circuit; Signal receiving circuit has R5, R6, C3, R4, T1, R7, D2, R8, T2, R9, D3 to constitute; Signal sending circuit has R10, R11, T3, T4, R12, R15, T6 to constitute;
Under the control of microcomputer terminal box control command, as Fig. 9, by C3, R4, T1, R7, D2, R8, T2, R9, D3, the DQ of U1 receives order, U1 is according to the order that receives, determine whether to answer or answer data, answer as needs, the DQ of U1 sends signal on the D by D3, R10, R11, T3, T4, R12, block the DQ of U1 simultaneously by R15, T6, make it not allow received signal, D is transferred to the microcomputer terminal box again, the microcomputer terminal box is by computing, judgement, with its temperature, distance display or warning.Above-mentioned transmission circuit can transmit signal more than 500 meters.
Wherein DC24+, DC24-are power lead, and R1, R2 are current-limiting resistance, and D is the signal RTP, as Fig. 6, D1, R3, C1 constitute direct current 24V power supply, and promptly TP2 is 24V, and R13, T5, V1, C2 are power supply adjustment and mu balanced circuit, obtaining TP3 (V+) is 3.6V, U1 is a digital temperature sensor, and 3 pin of U1 connect power supply+(being 3.6V), and 1 pin of U1 connects power supply ground, 2 pin of U1 are order and temperature data transmission ends, and order and temperature data transmission are carried out with serial mode.
(a) order, data-modulated waveform such as Figure 10 of temperature sensor reception, signal high level 24V, waveform when signal low level 17V, Fig. 9 receive for the D place.When temperature sensor receives: 1. when the D low level, be coupled by C3, R4, through T1, R7, TP6 is high level, and wherein R5, R6 provide quiescent point for T1, and TP6 is through R8, T2, the R9 negative circuit, TP7 also is a low level, 2 pin of U1 are low level like this, it is signal low level among the D, the DQ of U1 also is a low level, because TP7 is a low level, makes not conducting of D3, again because the TP6 high level, the D2 conducting makes the TP4 high level, and TP4 is through R10, T3, R11, making TP8 is low level, does not exert an influence to received signal.2. when the D high level, because C3, R4 are inoperative, according to reasoning 1., TP7 is a high level, and the DQ of U1 also is a high level, because the D3 conducting, TP8 is a low level, and TP8 has blocked the effect to signal, does not exert an influence to received signal equally.
When (b) the intelligent temperature detecting module sends data, 3. when the DQ of U1 high level, i.e. TP7 high level, as Figure 10, through D3, the TP4 high level is through R10, T3, R11, make the TP8 low level, TP8 blocks T4, and TP5 does not produce effect through R12 and the same level of D to D, making does not increase electric current on the D, i.e. yet high level of D place.4. the DQ as U1 is a low level, and promptly TP7 is a low level, because C3, R4, inoperative, TP6 also is a low level, because R10 is a pull down resistor, TP4 then is a low level, TP4 is through T3, R11, and TP8 then is a high level, and TP8 is through T4, R12, D has been added a load current, and about 100mA is as Figure 11, just can produce 100mA at microcomputer terminal box end like this and draw electric current, thereby the DQ that can detect U1 has sent a low level.
Embodiment 4
As shown in figure 12, and the difference of embodiment 3 be exactly that three leads are spiral stranded between per two intelligent temperature measuring module.
Claims (5)
1. based on the digital quantity line-type heat detector of bussing technique, it is characterized in that forming a complete signal acquisition circuit by microcomputer terminal box and temperature sensing cable, temperature sensing cable is made up of lead and intelligent temperature detecting module, lead is connected with the microcomputer terminal box, some intelligent temperature detecting modules in parallel between the lead.
2. according to the described digital quantity line-type heat detector of claim 1, it is characterized in that described lead can be two leads or three leads based on bussing technique.
3. according to the described digital quantity line-type heat detector of claim 2 based on bussing technique, it is characterized in that described two or three leads adopt be parallel to each other or between per two intelligent temperature detecting modules spiral stranded.
4. according to the described digital quantity line-type heat detector of claim 1 based on bussing technique, it is characterized in that described intelligent temperature detecting module is made up of mu balanced circuit, intelligent temperature sensor, signal receiving circuit and signal sending circuit, the output terminal of mu balanced circuit is connected with the input end of intelligent temperature sensor, signal receiving circuit and signal sending circuit respectively, the output terminal of signal receiving circuit is connected with the I/O end of intelligent temperature sensor, and the I/O end of intelligent temperature sensor is connected with the input end of signal sending circuit.
5. according to the described digital quantity line-type heat detector of claim 1, it is characterized in that also comprising an oversheath, in oversheath is coated on temperature sensing cable based on bussing technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200158862U CN201057569Y (en) | 2007-11-15 | 2007-11-15 | Digital quantity line-type heat detector based on bus technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200158862U CN201057569Y (en) | 2007-11-15 | 2007-11-15 | Digital quantity line-type heat detector based on bus technique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240427A (en) * | 2014-09-10 | 2014-12-24 | 宁波织网信息技术有限公司 | Forest fire prevention monitoring system based on Internet of Things |
| CN106940226A (en) * | 2017-05-15 | 2017-07-11 | 上海安誉智能科技有限公司 | Temperature sensor line based on temperature element |
| CN106969852A (en) * | 2017-05-15 | 2017-07-21 | 上海安誉智能科技有限公司 | Export temperature sensor line circuit structure, system for detecting temperature and its method for PWM ripples |
| CN106969850A (en) * | 2017-05-15 | 2017-07-21 | 上海安誉智能科技有限公司 | The temperature sensing cable and its application and method of temperature sensor line based on output PWM ripples |
-
2007
- 2007-11-15 CN CNU2007200158862U patent/CN201057569Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240427A (en) * | 2014-09-10 | 2014-12-24 | 宁波织网信息技术有限公司 | Forest fire prevention monitoring system based on Internet of Things |
| CN106940226A (en) * | 2017-05-15 | 2017-07-11 | 上海安誉智能科技有限公司 | Temperature sensor line based on temperature element |
| CN106969852A (en) * | 2017-05-15 | 2017-07-21 | 上海安誉智能科技有限公司 | Export temperature sensor line circuit structure, system for detecting temperature and its method for PWM ripples |
| CN106969850A (en) * | 2017-05-15 | 2017-07-21 | 上海安誉智能科技有限公司 | The temperature sensing cable and its application and method of temperature sensor line based on output PWM ripples |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20101115 |