CN201532695U - Operation risk alarm for confined space - Google Patents
Operation risk alarm for confined space Download PDFInfo
- Publication number
- CN201532695U CN201532695U CN 200920216597 CN200920216597U CN201532695U CN 201532695 U CN201532695 U CN 201532695U CN 200920216597 CN200920216597 CN 200920216597 CN 200920216597 U CN200920216597 U CN 200920216597U CN 201532695 U CN201532695 U CN 201532695U
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- transmitter
- signal
- risk alarm
- warning device
- signals
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- Expired - Lifetime
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Abstract
The utility model relates to an operation risk alarm for confined space. The operating risk alarm comprises an emitter and a receiving and alarming device. The emitter adopts the scheme that through modulating square wave signals output by an oscillator (IC1), the wave signals are added to an input terminal of a transmitter module (IC2) through a resistor (R), radio frequency signals are modulated by the transmitter module (IC2), so as to send alarming signals into the air through a built-in antenna; and the receiving and alarming device comprises a radio receiving head (IC3), an audio-frequency encoder (IC4), an integrated circuit (IC5), a loudspeaker (BL), a flashing lamp (LED) and other devices. The operation risk alarm has the advantages of simple structure, convenient installation and use and complete signal receiving, etc., when operating personnel in the confined space encounter risks and send signals, monitoring personnel can receive the alarming sent by the alarming device immediately so as to promptly organize rescuing, thereby effectively avoiding casualties and greatly improving the safety of operating personnel.
Description
Technical field:
The utility model relates to a kind of warning device, particularly a kind of restricted clearance operating risk alarm.
Background technology:
Accidents such as when petrochemical enterprise carried out in the restricted clearance operation, the operating personnel often poisoned, suffocates, mechanical wounding.Because restricted clearance has shielding action to wireless signal, and environment is noisy, and the monitoring personnel in the restricted clearance outside can't in time obtain the distress signal in the restricted clearance, in time sue and labour and delay, usually cause operating personnel's injures and deaths, the generation that causes a serious accident.
The utility model content:
The purpose of this utility model is to provide a kind of warning device, when operating personnel in restricted clearance is come to harm, can make things convenient for the restricted clearance operating risk alarm that sends an SOS to the monitoring personnel timely.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of restricted clearance operating risk alarm is provided, forms by transmitter and reception warning device.Wherein, described transmitter is by modulating oscillator IC1 output square-wave signal, and square-wave signal is added to the input end of transmitter module IC2 by resistor R 3, by transmitter module IC2 the radiofrequency signal of emission is modulated, through concealed antenna to aerial emission alerting signal; Described reception warning device is made up of devices such as radio reception head IC3, tone decoder IC4 and integrated circuit (IC) 5, loudspeaker BL and flashing lamp LED, delivering to tone decoder IC4 after the signal that radio reception head IC3 receives transmitter amplifies decodes, tone decoder IC4 is transferred to the trigger end TR of integrated circuit (IC) 5 with decoded low level signal, makes it be subjected to sending sound and light signal and amplifies rear drive loudspeaker BL and flashing lamp LED reports to the police simultaneously through transistor VT.
Described transmitter and reception warning device are provided with battery, use the 12V direct supply.
The utlity model has simple in structure, easy to install, signal receives advantages such as comprehensive, when the operating personnel in the restricted clearance runs into risk and sends signal, the monitoring personnel can receive immediately by receiving the alarm that warning device sends, in time organize the rescue work, avoid personnel casualty accidents effectively, improve operating personnel's security greatly.
Description of drawings
Fig. 1 is for being the circuit diagram of the utility model transmitter.
Fig. 2 is the circuit diagram of the utility model wireless receiving module.
Embodiment
Consult shown in the accompanying drawing 1, transmitter is powered by power supply G1, when pressing emission button SW1, circuit connection work, by modulating oscillator IC1 output square-wave signal, square-wave signal is added to the input end of transmitter module IC2 by resistor R 3, by transmitter module IC2 the radiofrequency signal of emission is modulated, through concealed antenna to aerial emission alerting signal.The modulating oscillator IC1 of transmitter adopts the NE555 time-base integrated circuit, and it is connected into free-running multivibrator, and transmitter module IC2 adopts the TWH630 integrated circuit.
Consult shown in the accompanying drawing 2, receive warning device and form by devices such as radio reception head IC3, tone decoder IC4 and integrated circuit (IC) 5, loudspeaker BL and flashing lamp LED.The model of radio reception head IC3 is TWH631, after the radiofrequency signal that receives from transmitter, at first amplify, delivering to tone decoder IC4 via output terminal then decodes, the centre frequency of demoder is adjusted by potentiometer RP, make centre frequency equal the modulating frequency of transmitter, the model of IC4 is LM567.Demodulate output low level behind the frequency modulated signal of transmitter correspondence when demoder, IC4 is transferred to the low level trigger end TR of integrated circuit (IC) 5 with decoded low level signal, makes it be subjected to sending sound and light signal and amplifies and drive loudspeaker BL and flashing lamp LED reports to the police simultaneously through transistor VT.The model of integrated circuit (IC) 5 is KD-156.VD1, VD2 are common 1N4148 transwitch diode, and its effect is to utilize its forward pipe step-down that KD-156 can be operated under the normal voltage.VT can be with 9013 silicon NPN triodes.RP adopts the organic real core trimmer potentiometer of WSW.
Transmitter and reception warning device are provided with battery, are the 12V direct supply.Transmitter is carried by the restricted clearance operating personnel, and the receiver that receives warning device is fixedly installed on restricted clearance inlet inboard, and alarming horn and flashing lamp are guided to the restricted clearance outside by circuit, are observed by the monitoring personnel.
Claims (2)
1. restricted clearance operating risk alarm, comprise transmitter and receive warning device, it is characterized in that: described transmitter is by modulating oscillator IC1 output square-wave signal, square-wave signal is added to the input end of transmitter module IC2 by resistor R 3, by transmitter module IC2 to the emission radiofrequency signal modulate, through concealed antenna to aerial emission alerting signal; Described reception warning device is made up of devices such as radio reception head IC3, tone decoder IC4 and integrated circuit (IC) 5, loudspeaker BL and flashing lamp LED, delivering to tone decoder IC4 after the signal that radio reception head IC3 receives transmitter amplifies decodes, tone decoder IC4 is transferred to the trigger end TR of integrated circuit (IC) 5 with decoded low level signal, makes it be subjected to sending sound and light signal and amplifies rear drive loudspeaker BL and flashing lamp LED reports to the police simultaneously through transistor VT.
2. restricted clearance operating risk alarm according to claim 1 is characterized in that: described transmitter and reception warning device are provided with battery, use the 12V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920216597 CN201532695U (en) | 2009-09-21 | 2009-09-21 | Operation risk alarm for confined space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920216597 CN201532695U (en) | 2009-09-21 | 2009-09-21 | Operation risk alarm for confined space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532695U true CN201532695U (en) | 2010-07-21 |
Family
ID=42528096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920216597 Expired - Lifetime CN201532695U (en) | 2009-09-21 | 2009-09-21 | Operation risk alarm for confined space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201532695U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719445A (en) * | 2016-01-27 | 2016-06-29 | 信阳师范学院 | Duty ratio coding alarm system and signal modulation method thereof |
| CN112581720A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Intelligent detection and alarm system for operation safety state in limited space |
-
2009
- 2009-09-21 CN CN 200920216597 patent/CN201532695U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719445A (en) * | 2016-01-27 | 2016-06-29 | 信阳师范学院 | Duty ratio coding alarm system and signal modulation method thereof |
| CN112581720A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Intelligent detection and alarm system for operation safety state in limited space |
| CN112581720B (en) * | 2019-09-29 | 2022-09-02 | 中国石油化工股份有限公司 | Intelligent detection and alarm system for operation safety state in limited space |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100721 |
|
| CX01 | Expiry of patent term |