CN203203749U - Voice broadcast type digital pressure detection system - Google Patents
Voice broadcast type digital pressure detection system Download PDFInfo
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- CN203203749U CN203203749U CN 201320132927 CN201320132927U CN203203749U CN 203203749 U CN203203749 U CN 203203749U CN 201320132927 CN201320132927 CN 201320132927 CN 201320132927 U CN201320132927 U CN 201320132927U CN 203203749 U CN203203749 U CN 203203749U
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Abstract
The utility model discloses a voice broadcast type digital pressure detection system. The system comprises a pressure sensor, a signal conditioning module, a digital control module and a power supply. The pressure sensor is used for collecting a pressure signal of an object to be detected and sending the collected pressure signal to the signal conditioning module. The signal conditioning module amplifies and converts the received pressure signal and carries out sending to the digital control module. The digital control module carries out real-time display and real-time broadcast on the pressure signal. The reliability of the system is enhanced. A dual key power supply switch circuit is integrated between a power supply conversion module and the power supply, so as to control on and off of the power supply. A low pressure alarm function and a power indication function are increased.
Description
Technical field
Utility model relates to a kind of pressure detecting system, is specifically related to a kind of voice broadcast type digital pressure detection system.
Background technology
When the fire fighter rescues in the scene of fire, because smog is larger, needs to be equipped with the aerial respiration gas cylinder air is provided.In order to ensure fire fighter's personal safety, need the pressure of aerial respiration gas cylinder is detected in real time, thus the residue tolerance of indirect detection gas cylinder, the fire fighter in time withdraws with prompting.Pressure-detecting device on the existing market, the numeral of usually all only carrying out force value shows, and the general brightness of digital display screen is not high, is difficult to see clearly under the smog environment.When the fireman carried out rescue work in the scene of fire simultaneously, inconvenience removed to see digital display screen frequently, thereby fire fighter's personal safety is brought certain potential safety hazard.
Summary of the invention
In view of this, the utility model provides a kind of voice broadcast type digital pressure detection system, can carry out real-time voice broadcast and numeral demonstration to the force value of object to be measured, and the whole system reliability is high.
This voice broadcast type digital pressure detection system comprises: pressure transducer, signal condition module, digital control module and power supply, and wherein pressure transducer links to each other with the signal condition module, and the signal condition module links to each other with digital control module respectively with power supply.
Described pressure transducer is used for gathering the pressure signal of object to be measured, and the pressure signal that collects is converted to voltage signal sends to the signal condition module.
Described signal condition module comprises that operation amplifier module and voltage turn current module.Described operation amplifier module is amplified processing to this signal after receiving the voltage signal of pressure transducer transmission.Then after turning current module voltage signal is converted to current signal by voltage, send to digital control module.
Described digital control module comprises that power transfer module, voice broadcast module, display control module and electric current turn voltage module.Described power transfer module links to each other with power supply, offers respectively signal condition module and pressure transducer after the voltage that power transfer module provides power supply is changed.Described electric current turns voltage module and carry out the A/D conversion after the current signal that receives being converted to voltage signal, and the digital signal after will changing sends to respectively display control module and voice broadcast module.Display control module is realized the real-time demonstration to pressure signal.
Described voice broadcast module realizes the real-time broadcasting to pressure signal, is integrated with small-sized Single Chip Microcomputer (SCM) system in the voice broadcast module, is used for the report of control voice broadcast module chipspeech.
In described digital control module, integrated two button power switch circuits are realized the controls to the on/off electricity between power transfer module and power supply.Described pair of button power switch circuit comprises: resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 24, field effect transistor V7, field effect transistor V6, field effect transistor V3, keyswitch S1 and keyswitch S2.Wherein field effect transistor V7 is the P-channel field-effect transistor (PEFT) pipe, and field effect transistor V6 and field effect transistor V3 are N channel field-effect pipe.Its annexation is: the source electrode of described field effect transistor V7 and external power source V
CCLink to each other, drain electrode links to each other with the controlled device power end, and grid links to each other with the drain electrode of field effect transistor V6, and the while is at grid and the external power source V of described field effect transistor V7
CCBetween contact resistance R24.The drain electrode of described field effect transistor V6 is by resistance R 16 and external power source V
CCLink to each other, grid links to each other source ground with the drain electrode of field effect transistor V3.The drain electrode of described field effect transistor V3 is by resistance R 17 and external power source V
CCLink to each other source ground.Described keyswitch S1 links to each other by the drain electrode of resistance R 15 with field effect transistor V3 with the rear end of keyswitch S2 series connection, and the other end links to each other with the grid of field effect transistor V3.Contact resistance R14 between the grid of the drain electrode of described field effect transistor V6 and field effect transistor V3.
Further comprise the RS485 chip in the described digital control module, described RS485 chip is used for realizing the long-distance transmissions of barometric information.
Also comprise the infrabar alarm module in the described digital control module, described infrabar alarm module is reported to the police to the infrabar situation of object to be measured by hummer.When the atmospheric pressure value that detects object to be measured when pressure transducer was lower than setting value, system started hummer and reports to the police.
Integrated battery capacity indication circuit in the described digital control module, described battery capacity indication circuit links to each other with single-chip microcomputer, and single-chip microcomputer gathers setting value inner with it behind the electric weight of power supply relatively, then by bi-colour LED the electric weight of power supply is indicated.
Beneficial effect:
Can carry out to the atmospheric pressure value of object to be measured voice broadcast and numeral shows by this detection system, and in system integrated two button anti-misoperation functions, electric quantity of power supply measuring ability and low pressure alarm function, thereby make the reliability of whole system high.
Description of drawings
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the circuit diagram of two button power switch circuits.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
The present embodiment provides a kind of voice broadcast type digital pressure detection system that is used on the aerial respiration gas cylinder, can the air pressure in the aerial respiration gas cylinder be detected in real time and report by this system, has simultaneously low pressure alarm function, when not enough with the tolerance in the assurance aerial respiration gas cylinder, the fire fighter has the sufficient time to withdraw.Pressure detecting system in the present embodiment can gather the force value of 0～30MPa.
This system comprises pressure transducer, signal condition module, digital control module and power supply, as shown in Figure 1.Wherein pressure transducer links to each other with the signal condition module, and the signal condition module links to each other with digital control module respectively with power supply.Power supply in the present embodiment directly adopts the lithium battery of 3.7V.
Described pressure transducer be used for to gather the pressure signal of air-flow in the aerial respiration gas cylinder, and sends to the signal condition module after the pressure signal that collects is converted to voltage signal.
Described signal condition module comprises that operation amplifier module and voltage turn current module; Operation amplifier module in the signal condition module is amplified processing to this signal after receiving the voltage signal of pressure transducer transmission.Because the voltage signal of pressure transducer collection is voltage signal, easily decay in signals transmission after therefore turning current module pressure signal is converted to current signal by voltage, sends to digital control module.
Described digital control module comprises that power transfer module, voice broadcast module, display control module, electric current turn voltage module, RS485 chip and alarm module.Described lithium battery links to each other with power transfer module, offers respectively signal condition module and pressure transducer after the power supply that power transfer module provides lithium battery is changed.Electric current turns voltage module and carry out the AD conversion after the current signal that receives being converted to voltage signal; And the digital signal after will changing sends to respectively display control module, voice broadcast module and alarm module.Display control module adopts three charactrons realizations to the real-time demonstration of pressure signal.Alarm module is realized the low pressure alarming function by hummer, and when the pressure in pressure transducer detects gas cylinder was lower than 6MPa, hummer starts reported to the police, and be 0.5 second the interval time of reporting to the police, and voice suggestion interval time with air pressure and shorter and shorter.The RS485 chip is realized the teletransmission of pressure data.
The voice broadcast module is integrated with small-sized Single Chip Microcomputer (SCM) system by the real-time broadcasting of earphone realization to pressure signal in the described voice broadcast module, thus the report of chipspeech in the control voice broadcast module.In order to guarantee the fire fighter in the safety of rescue site, make the voice broadcast module can finish following voice broadcast function by the programming to Single Chip Microcomputer (SCM) system in the present embodiment:
(1) voice suggestion force value: when the pressure in the gas cylinder was 20MPa, 10MPa, 6MPa, twice force value of each voice suggestion understood by system;
(2) gas cylinder opening time prompting: the pressure drop in gas cylinder begins timing, system log (SYSLOG) service time, and every the setting-up time voice suggestion once;
(3) gas cylinder tolerance residue is reported service time: when storage pressure during greater than 10MPa, reported an excess time in per 6 minutes; When storage pressure greater than 5MPa during less than 10MPa, reported an excess time in per 3 minutes; When storage pressure during less than 5MPa, reported an excess time in per 1 minute.
Be the reliability that further raising system uses, in system, increased power prompt function and two button anti-misoperation functions.
Described power prompt function is: integrated battery capacity indication circuit in the digital control module, the battery capacity indication circuit links to each other with single-chip microcomputer, the setting value inner with it compared after single-chip microcomputer gathered the electric weight of power supply, then by bi-colour LED the electric weight of power supply indicated.When lithium battery forced down in 3.7V, red led was bright, and representing battery needs charging; When lithium battery voltage was higher than 3.7V, green indicating lamp was bright, and representing battery does not need charging.
Described pair of button anti-misoperation function is: in digital control module, when integrated two button power switch circuits only had two buttons to press simultaneously between power transfer module and the power supply, system just can power on.Described pair of button power switch circuit comprises as shown in Figure 2: resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 24, field effect transistor V7, field effect transistor V6, field effect transistor V3, keyswitch S1 and keyswitch S2.Wherein field effect transistor V7 is the P-channel field-effect transistor (PEFT) pipe, and field effect transistor V6 and field effect transistor V3 are N channel field-effect pipe.Its annexation is: the source electrode of described field effect transistor V7 and external power source V
CCLink to each other, drain electrode links to each other with the controlled device power end, and grid links to each other with the drain electrode of field effect transistor V6, and the while is at grid and the external power source V of described field effect transistor V7
CCBetween contact resistance R24.The drain electrode of described field effect transistor V6 is by resistance R 16 and external power source V
CCLink to each other, grid links to each other source ground with the drain electrode of field effect transistor V3.The drain electrode of described field effect transistor V3 is by resistance R 17 and external power source V
CCLink to each other source ground.Described keyswitch S1 links to each other by the drain electrode of resistance R 15 with field effect transistor V3 with the rear end of keyswitch S2 series connection, and the other end links to each other with the grid of field effect transistor V3; Contact resistance R14 between the grid of the drain electrode of described field effect transistor V6 and field effect transistor V3.This circuit is only when keyswitch S1 and keyswitch S2 press simultaneously, and field effect transistor V7 could conducting, the then power end of external power source and multifunctional digital pressure detecting system connection, thus be system power supply.
The principle of work of this pressure detecting system is: at first this pressure detecting system of pressure is linked to each other with the aerial respiration gas cylinder, the fire fighter opens the air respiratorresuscitator gas cylinder after entering the scene of fire, is with earphone, presses simultaneously two keyswitches and makes system's energising.Pressure signal in the pressure transducer Real-time Collection gas cylinder; Send to the signal condition module after this pressure signal is converted to voltage signal, the signal condition module is amplified processing to this signal, and turns current module by voltage this voltage signal is converted to current signal (purpose: anti-the decay of stop signal on transmission line).Current signal after the signal condition module will be changed sends to digital control module, digital control module carries out the A/D conversion after the current signal that receives is converted to voltage signal, and the digital signal after will changing sends to the real-time demonstration that charactron carries out force value, simultaneously digital signal is sent to the voice broadcast module, realize its sound prompt function.The force value that gathers when pressure transducer is during less than setting value, and hummer starts, and carries out low pressure alarming, and prompting the fire fighter withdraw.
In sum, above is preferred embodiment of the present utility model only, is not be used to limiting protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. voice broadcast type digital pressure detection system, it is characterized in that, comprise: pressure transducer, signal condition module, digital control module and power supply, wherein pressure transducer links to each other with the signal condition module, and the signal condition module links to each other with digital control module respectively with power supply;
Described pressure transducer is used for gathering the pressure signal of object to be measured, and the pressure signal that collects is converted to voltage signal sends to the signal condition module;
Described signal condition module comprises that operation amplifier module and voltage turn current module; Described operation amplifier module is amplified processing to this signal after receiving the voltage signal of pressure transducer transmission; Then after turning current module voltage signal is converted to current signal by voltage, send to digital control module;
Described digital control module comprises that power transfer module, voice broadcast module, display control module and electric current turn voltage module; Described power transfer module links to each other with power supply, offers respectively signal condition module and pressure transducer after the voltage that power transfer module provides power supply is changed; Described electric current turns voltage module and carry out the A/D conversion after the current signal that receives being converted to voltage signal, and the digital signal after will changing sends to respectively display control module and voice broadcast module; Display control module is realized the real-time demonstration to pressure signal;
Described voice broadcast module realizes the real-time broadcasting to pressure signal, is integrated with small-sized Single Chip Microcomputer (SCM) system in the voice broadcast module, is used for the report of control voice broadcast module chipspeech.
2. voice broadcast type digital pressure detection system as claimed in claim 1 is characterized in that, in described digital control module, integrated two button power switch circuits are realized the controls to the on/off electricity between power transfer module and power supply; Described pair of button power switch circuit comprises: resistance R 14, resistance R 15, resistance R 16, resistance R 17, resistance R 24, field effect transistor V7, field effect transistor V6, field effect transistor V3, keyswitch S1 and keyswitch S2; Wherein field effect transistor V7 is the P-channel field-effect transistor (PEFT) pipe, and field effect transistor V6 and field effect transistor V3 are N channel field-effect pipe; Its annexation is: the source electrode of described field effect transistor V7 and external power source V
CCLink to each other, drain electrode links to each other with the controlled device power end, and grid links to each other with the drain electrode of field effect transistor V6, and the while is at grid and the external power source V of described field effect transistor V7
CCBetween contact resistance R24; The drain electrode of described field effect transistor V6 is by resistance R 16 and external power source V
CCLink to each other, grid links to each other source ground with the drain electrode of field effect transistor V3; The drain electrode of described field effect transistor V3 is by resistance R 17 and external power source V
CCLink to each other source ground; Described keyswitch S1 links to each other by the drain electrode of resistance R 15 with field effect transistor V3 with the rear end of keyswitch S2 series connection, and the other end links to each other with the grid of field effect transistor V3; Contact resistance R14 between the grid of the drain electrode of described field effect transistor V6 and field effect transistor V3.
3. voice broadcast type digital pressure detection system as claimed in claim 1 or 2 is characterized in that, further comprises the RS485 chip in the described digital control module, and described RS485 chip is used for realizing the long-distance transmissions of barometric information.
4. voice broadcast type digital pressure detection system as claimed in claim 1 or 2 is characterized in that, also comprise the infrabar alarm module in the described digital control module, described infrabar alarm module is reported to the police to the infrabar situation of object to be measured by hummer; When the atmospheric pressure value that detects object to be measured when pressure transducer was lower than setting value, system started hummer and reports to the police.
5. voice broadcast type digital pressure detection system as claimed in claim 1 or 2, it is characterized in that, integrated battery capacity indication circuit in the described digital control module, described battery capacity indication circuit links to each other with single-chip microcomputer, the setting value inner with it compared after single-chip microcomputer gathered the electric weight of power supply, then by bi-colour LED the electric weight of power supply indicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132927 CN203203749U (en) | 2013-03-22 | 2013-03-22 | Voice broadcast type digital pressure detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132927 CN203203749U (en) | 2013-03-22 | 2013-03-22 | Voice broadcast type digital pressure detection system |
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| Publication Number | Publication Date |
|---|---|
| CN203203749U true CN203203749U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320132927 Withdrawn - After Issue CN203203749U (en) | 2013-03-22 | 2013-03-22 | Voice broadcast type digital pressure detection system |
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| CN (1) | CN203203749U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196626A (en) * | 2013-03-22 | 2013-07-10 | 北京长城电子装备有限责任公司 | Voice broadcasting type digital pressure detecting system |
| CN106237558A (en) * | 2016-08-09 | 2016-12-21 | 北京长城电子装备有限责任公司 | A kind of air pressure intelligent alarm system |
| CN106355833A (en) * | 2016-08-09 | 2017-01-25 | 北京长城电子装备有限责任公司 | Comprehensive air pressure alarm device |
-
2013
- 2013-03-22 CN CN 201320132927 patent/CN203203749U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196626A (en) * | 2013-03-22 | 2013-07-10 | 北京长城电子装备有限责任公司 | Voice broadcasting type digital pressure detecting system |
| CN103196626B (en) * | 2013-03-22 | 2015-06-10 | 北京长城电子装备有限责任公司 | Voice broadcasting type digital pressure detecting system |
| CN106237558A (en) * | 2016-08-09 | 2016-12-21 | 北京长城电子装备有限责任公司 | A kind of air pressure intelligent alarm system |
| CN106355833A (en) * | 2016-08-09 | 2017-01-25 | 北京长城电子装备有限责任公司 | Comprehensive air pressure alarm device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130918 Effective date of abandoning: 20150610 |
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| RGAV | Abandon patent right to avoid regrant |