CN202204804U - Portable wireless underground gas detector - Google Patents
Portable wireless underground gas detector Download PDFInfo
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- CN202204804U CN202204804U CN2011201665288U CN201120166528U CN202204804U CN 202204804 U CN202204804 U CN 202204804U CN 2011201665288 U CN2011201665288 U CN 2011201665288U CN 201120166528 U CN201120166528 U CN 201120166528U CN 202204804 U CN202204804 U CN 202204804U
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Abstract
The utility model provides a portable wireless underground gas detector, which comprises a sensor, an A/D (Analog-to-Digital) converter, a processing unit, a storage unit, a wireless transmitter and a wireless receiver, wherein the sensor is used for sensing the content of underground gas and producing a corresponding measurement value, the A/D converter is connected with the sensor and is used for mutually converting the measurement value and a digital signal, the processing unit is connected with the A/D converter and is used for comparing the measurement value and a preset value and executing corresponding operation according to the execution result, the storage unit is used for storing the digital signal which is processed by the processing unit, the wireless transmitter transmits the digital signal in the storage unit to external equipment through the processing unit, and the wireless receiver transmits the signal of the external equipment to the processing unit to be processed. According to the underground gas detector, various hazardous gases of an underground mine can be dynamically monitored, and the underground disasters can be predicted and found in advance, and thus, so that the personnel safety can be greatly improved.
Description
Technical field
The utility model relates to wireless communication technology field, particularly a kind of portable mobile wireless mine gas detector.
Background technology
Along with the continuous development of society, people constantly increase the demand of resource, and are especially increasing to the demand of resources such as colliery, cause more colliery by exploitation significantly, like this, under coal mine, carry out work with regard to the more coal miner of needs.Constantly in the process of exploitation, the harmful gas under the coal mine often can not be got rid of in time in the colliery, thus security incident such as explosion caused, and toxic gases such as carbon monoxide, the sulfuretted hydrogen personal safety of returning coal miner simultaneously brings hidden danger.
Therefore, need monitor,, ensure Safety of Coal Mine Production so that guarantee the personal safety of coal miner to the harmful gas under the coal mine.The method that traditional movable type is measured harmful gas under the coal mine adopts artificial method usually; Carry the portable type measuring device by survey crew and get into mine; At the local starter gear that needs are measured, the hand-kept data, survey crew returns and handles accordingly when aboveground again then.So not only waste a large amount of manpowers, and can't accomplish real-time measurement, have the measurement of long period and report to the police between time-delay, can not find, report and handle potential safety hazard timely and effectively.Moreover, artificial detection method can not accomplish in time certain ad-hoc location to be carried out the harmful gas monitoring, brings unforeseen potential safety hazard.The method of harmful gas is for sending to the signal of gathering in the treatment facility on the coal mine through the wired fixed equipment that is arranged on the relevant position under a kind of in addition fixed measurement coal mine; But after security incident takes place; Be easy to cause wired interruption; Make signal can not arrive the ground control centre, monitored area and wired comes hidden danger for the colliery securing band simultaneously.
In addition, in case the colliery caves in, existing supervising device is difficult to judge accurately the definite position of the coal miner in the coal mine, therefore can not in time rescue coal miner, causes inconceivable disaster.
The utility model content
The utility model is intended to one of solve the problems of the technologies described above at least.
For this reason; A purpose of the utility model is to propose a kind of portable mobile wireless mine gas detector; This portable mobile wireless mine gas detector is short to the detection time of mine gas content, and accuracy of detection is high, and through wireless mode detection signal is sent to peripherals; Reliability is high, thereby can improve personal safety greatly.
Be the realization above-mentioned purpose, the portable mobile wireless mine gas detector that the utility model proposes, comprising: sensor, said sensor are used to respond to the content of mine gas and produce corresponding measured value; A/D converter, an end of said A/D converter link to each other with said sensor so that said measured value and digital signal are changed each other; Processing unit, said processing unit links to each other with the other end of said A/D converter, more said measured value of said processing unit and preset value, and according to the corresponding operation of comparative result execution; Storage unit, said storage unit link to each other with said processing unit with storage by the digital signal after the processing unit processes; With wireless launcher and wireless receiver, said wireless launcher sends to peripherals through said processing unit with the digital signal in the said storage unit, and said wireless receiver sends to said processing unit processes with the signal of said peripherals.
Portable mobile wireless mine gas detector according to the utility model; Sensor sends to processing unit processes to the content value of the gas of sensing through A/D converter; Processing unit is according to comparing accordingly between this content value and the predetermined content value; Whether exceed standard thereby judge gas content, and this measurement result is sent to peripherals through wireless launcher and wireless receiver.Thereby whether the content of judging gas in time exceeds standard, and in time to making corresponding processing, has guaranteed personal safety.
In addition, the portable mobile wireless mine gas detector according to the utility model can also have following additional technical characterictic:
Described portable mobile wireless mine gas detector also comprises: accelerometer, and said accelerometer links to each other with said processing unit, and said accelerometer obtains the measured value of current time.
Said processing unit links to each other with said accelerometer, said processing unit according to said measured value and and preset at least two wireless routing nodes between the wireless signal strength variable quantity calculate current location information.
Wireless signal strength when said processing unit is used for according to the positional information of said preset two wireless routing nodes and said processing unit through one of them of above-mentioned wireless routing node at least changes peak value and calculates the reference position; And calculate said current location with respect to the distance between the wireless routing node that passes through according to the time integral of the measured value of the accelerometer that begins from said reference position, and according to the positional information of said preset at least two wireless routing nodes and and another wireless routing node between the wireless signal strength variable quantity calculate said current location with respect to the distance between said another wireless routing node.
Thus; Send to processing unit through accelerometer degree of will speed up value and handle, the definite positional information of current location that can measuring and processing unit has the advantage of accurate positioning; Like this; In the prediction and the process of speedily carrying out rescue work, can accurately navigate to the position of down-hole trapped personnel, thereby improve personal safety greatly.
Said wireless launcher and wireless receiver carry out radio communication through Zigbee, WiFi or bluetooth wireless protocol and the external world.
Described portable mobile wireless mine gas detector also comprises: radio frequency amplifier, said radio frequency amplifier are used for the emission of said wireless launcher and wireless receiver is amplified with the reception signal; Antenna, said antenna are used to improve the emission and the intensity that receives signal of said wireless launcher and wireless receiver.
Said processing unit also is used for calculating the position of said current time and the distance value between the predeterminated position according to the accekeration of said current time.
Said sensor comprises: firedamp sensor, carbon monoxide transducer and hydrogen sulfide sensor one of at least.
Described portable mobile wireless mine gas detector also comprises: display device, said display device are used to show the degree one of at least of gas, carbon monoxide and hydrogen sulfide gas; Alarm; Said alarm links to each other with said processing unit, and said alarm is used for according to said processing unit the comparative structure of the preset degree one of at least of the degree one of at least of current gas, carbon monoxide and hydrogen sulfide gas and gas, carbon monoxide and hydrogen sulfide gas being reported to the police.
Said display device is a charactron, and said alarm is loudspeaker, light emitting diode, hummer or electromagnetic shaker.
Described portable mobile wireless mine gas detector also comprises: power supply, said power supply are used for the sensor that links to each other with said power supply, said A/D converter, said processing unit, said storage unit and said emission and receiver power supply; And power supervisor, said power supervisor is used for said power supply is carried out management of charging and discharging and overload prevention.
Additional aspect of the utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize through the practice of the utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the structural drawing of the portable mobile wireless mine gas detector of the utility model embodiment;
Fig. 2 is the gas detection process flow diagram of the portable mobile wireless mine gas detector of the utility model embodiment;
Fig. 3 is the positioning flow figure of the portable mobile wireless mine gas detector of the utility model embodiment; With
Fig. 4 is the position fixing process synoptic diagram of the portable mobile wireless mine gas detector of application the utility model embodiment.
Embodiment
Describe the embodiment of the utility model below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the utility model, and can not be interpreted as restriction the utility model.
In the description of the utility model; It will be appreciated that; The orientation of indications such as term " " center ", " vertically ", " laterally ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward " or position relation are for based on orientation shown in the drawings or position relation; only be to describe with simplifying for the ease of describing the utility model; rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction to the utility model.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In the description of the utility model, need to prove that only if clear and definite regulation and qualification are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be to be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly through intermediary, can be the connection of two element internals.For those of ordinary skill in the art, can concrete condition understand the concrete implication of above-mentioned term in the utility model.
Below in conjunction with accompanying drawing 1-3 the portable mobile wireless mine gas detector according to the utility model embodiment is described.
As shown in Figure 1, be the structural drawing of the portable mobile wireless mine gas detector of the utility model embodiment.Portable mobile wireless mine gas detector according to the utility model embodiment comprises: sensor 110, A/D converter 120, processing unit 130, storage unit 140 and wireless launcher and wireless receiver 150.
Wherein, sensor 110 is used to respond to the content of mine gas and produces corresponding measured value.One end of A/D converter 120 links to each other so that said measured value and digital signal are changed each other with sensor 110.Processing unit 130 links to each other with the other end of A/D converter 120 to handle the measured value through A/D converter 120 conversions, is specially more said measured value and preset value, and carries out corresponding operation according to comparative result.Storage unit 140 links to each other with processing unit 130 to store by the digital signal after processing unit 130 processing.The wireless launcher of wireless launcher and wireless receiver 150 sends to peripherals through processing unit 130 with the digital signal in the storage unit 140, and this wireless receiver sends to processing unit 130 with the signal of peripherals and handles.
As shown in Figure 2, be the testing process figure of the portable mobile wireless mine gas detector of the utility model embodiment.
In conjunction with Fig. 1, as a concrete example, at first, this portable mobile wireless mine gas detector carries out the self check initialization, and sensor 110 begins to respond to gas in the preset time cycle then, for example can be gas.The induction process of sensor 110 needs certain delay, and sensor 110 sends to processing unit 130 with testing result this time through after the digital conversion subsequently.For the induction that makes sensor 110 more accurate; In an embodiment of the utility model, can answer 5 times by sense of continuity, and after digital conversion, send to processing unit 130 to 5 times testing result respectively; 130 pairs of 5 testing results of processing unit are averaged, and have improved accuracy of detection like this.After last treated unit 130 was handled, the wireless launcher through wireless launcher and wireless receiver 150 sent to peripherals with testing result through the ZigBee wireless mode.
In another embodiment of the utility model, this portable mobile wireless mine gas detector also has positioning function.
Particularly; In another embodiment of the utility model; For example the portable mobile wireless mine gas detector of the utility model embodiment can also comprise accelerometer 190; Said accelerometer 190 links to each other with said processing unit 130, and said accelerometer 190 is used to obtain the accekeration of current time.
According to the foregoing description, said processing unit 130 links to each other with said accelerometer 190, said processing unit 130 according to said accekeration and and preset at least two wireless routing nodes between the wireless signal strength variable quantity calculate current location information.Thus, can confirm the relative position between processing unit place current location and two the preset wireless routing nodes through the measured value of accelerometer.Like this, just, realized positioning function.
Particularly; According to the above embodiments; Wireless signal strength when said processing unit 130 is used for according to the positional information of said preset two wireless routing nodes and said processing unit 130 through one of them of above-mentioned wireless routing node at least changes peak value and calculates the reference position; And calculate said current location with respect to the distance between the wireless routing node that passes through according to the time integral of the measured value of the accelerometer that begins from said reference position 190, and according to the positional information of said preset at least two wireless routing nodes and and another wireless routing node between the wireless signal strength variable quantity calculate said current location with respect to the distance between said another wireless routing node.
Like this, through accelerometer 190 measured value is sent to processing unit 130 and handle, can measure the definite positional information of current location; Advantage with accurate positioning, like this, in the process of speedily carrying out rescue work; Can accurately navigate to the position of down-hole trapped personnel, thereby improve personal safety greatly.
As shown in Figure 3, for using the position fixing process process flow diagram of the utility model.
At least two isolated first wireless routing nodes and second wireless routing node are set at first in advance, and measure the positional information of said first wireless routing node and second wireless routing node.
In conjunction with Fig. 4, in an embodiment of the utility model, for example can be according to measuring and actual conditions; (n is the integer greater than 1 to the well fixing routing node R1 of layout to Rn; Represent n routing node), the detailed measurements of the relative position between the node when installing provides, and draws corresponding routing node layout; Like this, can confirm the accurate location information of routing node R1 to Rn.
Then, whether the current location of processing unit 130 judgment processing unit passes through at least one of said first wireless routing node and second wireless routing node on the line direction of said first wireless routing node and second wireless routing node.
As a concrete example; As shown in Figure 4, when for example current location Tn is through each routing node Rx (x is the integer between 1 to n), current location Tn reaches maximal value to the signal intensity of routing node Rx; And Tn is a smaller value to the signal intensity of all the other R, and not peak value.Judge that the position of Tn is the Rx at current place, routing node R1 for example shown in Figure 4 this moment.Like this, current location Tn can be judged and at least one routing node must be passed through.
At last; If processing unit 130 is judged the place current location is passed through said first wireless routing node and second wireless routing node at least one; Then the wireless signal strength during through one of them of above-mentioned wireless routing node changes peak value and calculates the reference position according to the positional information of said preset at least two wireless routing nodes and said processing unit 130; And calculate said current location with respect to the distance between the wireless routing node that passes through according to the time integral of the measured value of the accelerometer that begins from said reference position 190, and according to the positional information of said preset at least two wireless routing nodes and and another wireless routing node between the wireless signal strength variable quantity calculate said current location with respect to the distance between said another wireless routing node.
Particularly; Combine Fig. 4 once more; At first current location Tn from a known Rx (like R1) to another known R (like R2); Current location Tn is a reference point with R1 in this process, then this current location Tn is carried out the relative displacement that integration obtains this current location Tn this moment and R1 with respect to the accekeration of this reference point R1, and issues R1 to data.R1 further calculates the particular location of Tn then, and sends in the peripherals step by step, thereby finally obtains the exact position of current location Tn.
Current location Tn when the R2, then will before the accekeration zero clearing of accelerometer 190, and be reference point with R2, repeat aforesaid operations.And then obtain the exact position of the Tn of any time.
In an embodiment of the utility model; Wireless signal strength when said processing unit is used for according to the positional information of said preset two wireless routing nodes and said processing unit 130 through one of them of above-mentioned wireless routing node at least changes peak value and calculates the reference position; And calculate said current location with respect to the distance between the wireless routing node that passes through according to the time integral of the measured value of the accelerometer that begins from said reference position 190, and according to the positional information of said preset at least two wireless routing nodes and and another wireless routing node between the wireless signal strength variable quantity calculate said current location with respect to the distance between said another wireless routing node.
In conjunction with Fig. 1; In some examples of the utility model, for example the wireless receiver of the wireless launcher of wireless launcher and wireless receiver 150 and wireless launcher and wireless receiver 150 can carry out radio communication through communications such as Zigbee, WiFi or bluetooth and peripherals.In a preferred embodiment of the utility model, for example adopt the Zigbee wireless mode, the Zigbee wireless communication protocol has low in power consumption, improves the serviceable life of battery 160 thus.In addition, the Zigbee wireless network have cost low, prolong in short-term, the advantage of high power capacity and high safety, thus, improve the reliability and security of near radio transmission.
As shown in Figure 1, in an embodiment of the utility model, this portable mobile wireless mine gas detector for example also comprises radio frequency amplifier 170 and antenna 180.
Radio frequency amplifier 170 is used for the emission of the wireless receiver of the wireless launcher of wireless launcher and wireless receiver 150 and wireless launcher and wireless receiver 150 is amplified with the signal that receives, and thus, plays the function that improves signal intensity.Antenna 180 is used to improve the emission and the intensity that receives signal of wireless receiver of wireless launcher and the wireless launcher and the wireless receiver 150 of wireless launcher and wireless receiver 150, like this, has improved emission and the reliability that receives.
The portable mobile wireless mine gas detector of the utility model embodiment also has positioning function, and as a concrete example, for example this portable mobile wireless mine gas detector also comprises accelerometer 190.This accelerometer 190 links to each other with processing unit 130, and this accelerometer 190 is used to obtain the accekeration of current time and sends to processing unit to accekeration.Preferably, for example accelerometer can be three axis accelerometer.
Advantageously, this processing unit 130 also is used for calculating the position of current time and the distance value between the predeterminated position according to the accekeration of current time.
As shown in Figure 3, be the workflow diagram of the accelerometer of the utility model embodiment.
Particularly; In conjunction with Fig. 1, accelerometer 190 is at first gathered the accekeration and the current time value of current time, then accekeration is carried out filtering; To obtain more accurately accekeration; Accelerometer 190 is according to the position of having good positioning in advance subsequently, through and this position of having good positioning in advance between accekeration send to simultaneously in the processing unit 130 with value constantly, processing unit calculate current location according to accekeration and moment value and the position of having good positioning in advance between distance.
It should be noted that; The position of having good positioning in advance can be a plurality of, like this, when calculating accekeration, at first judges the position which current location have good positioning with respect in advance at every turn; Like this, the distance that calculates is the distance of current location with respect to this position of having good positioning in advance.
In an embodiment of the utility model, for example sensor 110 can comprise one or more of firedamp sensor, carbon monoxide transducer and hydrogen sulfide sensor.Like this, this sensor 110 can detect one or more content value of gas, carbon monoxide and hydrogen sulfide gas simultaneously.
As shown in table 1, be the portable mobile wireless mine gas detector detection indication range of the utility model embodiment.
| The technical indicator content | This project technical target of the product |
| The gas surveying scope | 0～4％ |
| The gas surveying relative error | 2% (relatively) |
| The carbon monoxide measurement range | 0～2000 |
| The carbon monoxide measuring relative errors | 2.5% (relatively) |
| The sulfuretted hydrogen measurement range | 0～200ppm |
| The sulfuretted hydrogen measuring error | 2.5% (relatively) |
| Temperature measurement range | -55～125℃ |
| Response time | 10s～30s |
| Data transfer mode | Wireless |
| Message transmission rate | 10k～1M bps is adjustable |
| The personnel positioning precision | 1～5m |
| WV | 2.7～5V |
| Power consumption | 0.9W |
| Weight | 0.1kg |
| Volume | 80×40×30(mm) |
Table 1
According to an embodiment of the utility model, this portable mobile wireless mine gas detector for example also comprises 2 display device 200 and alarm 210.
Display device 200 is used to show the degree one of at least of gas, carbon monoxide and hydrogen sulfide gas.In an embodiment of the utility model, for example display device can be charactron, and said alarm is loudspeaker, light emitting diode, hummer or electromagnetic shaker etc.Whether the content that thus, can make things convenient for the user to observe current gas exceeds standard.
Alarm 210 links to each other with processing unit 130, is used for reporting to the police according to the comparative result of the preset degree one of at least of the degree one of at least of processing unit 130 pairs of current gas, carbon monoxide and hydrogen sulfide gas and gas, carbon monoxide and hydrogen sulfide gas.Like this, improve security.
In an embodiment of the utility model; This portable mobile wireless mine gas detector for example also comprises power supply 160, and said power supply 160 is used for the receiver power supply to the transmitter of the sensor 110 that links to each other with said power supply, said A/D converter 120, said processing unit 130, said storage unit 140 and wireless launcher and wireless receiver 150 and wireless launcher and wireless receiver 150; With power supervisor 220, this power supervisor 220 is used for power supply 160 is carried out management of charging and discharging and overload prevention.Thus, prevent the infringement of power supply 160, improve the serviceable life of power supply simultaneously.
Portable mobile wireless mine gas detector according to the utility model embodiment; Sending to processing unit 130 sensor 110 is changed the content value of the gas of sensing (like gas, carbon monoxide and sulfuretted hydrogen) through A/D converter 120 after handles; Processing unit 130 is according to comparing accordingly between this content value and the predetermined content value; Thereby whether the content of judging this gas exceeds standard; Then testing result is stored in the storage unit 140; And the data in the storage unit 140 are carried out access, and carry out data transmission with peripherals through the wireless launcher of wireless launcher and wireless receiver 150 and the wireless receiver of wireless launcher and wireless receiver 150.Thereby whether the content of judging this gas in time exceeds standard, and in time makes corresponding processing, has guaranteed personal safety.In addition, the portable mobile wireless mine gas detector of the utility model embodiment can calculate the precise information of current location through accelerometer 190, like this, has more guaranteed personal safety.
In the description of this instructions, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model; Those having ordinary skill in the art will appreciate that: under the situation of principle that does not break away from the utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, the scope of the utility model is claim and be equal to and limit.
Claims (9)
1. a portable mobile wireless mine gas detector is characterized in that, comprising:
Sensor, said sensor are used to respond to the content of mine gas and produce corresponding measured value;
A/D converter, an end of said A/D converter link to each other with said sensor so that said measured value and digital signal are changed each other;
Processing unit, said processing unit links to each other with the other end of said A/D converter, more said measured value of said processing unit and preset value, and according to the corresponding operation of comparative result execution;
Storage unit, said storage unit link to each other with said processing unit with storage by the digital signal after the processing unit processes; With
Wireless launcher and wireless receiver, said wireless launcher sends to peripherals through said processing unit with the digital signal in the said storage unit, and said wireless receiver sends to said processing unit processes with the signal of said peripherals.
2. portable mobile wireless mine gas detector according to claim 1 is characterized in that, also comprises:
Accelerometer, said accelerometer links to each other with said processing unit, and said accelerometer obtains the measured value of current time.
3. portable mobile wireless mine gas detector according to claim 2 is characterized in that said processing unit links to each other with said accelerometer.
4. portable mobile wireless mine gas detector according to claim 1 is characterized in that said wireless launcher and wireless receiver carry out radio communication through Zigbee, WiFi or bluetooth wireless protocol and the external world.
5. portable mobile wireless mine gas detector according to claim 1 is characterized in that, also comprises:
Radio frequency amplifier, said radio frequency amplifier are used for the emission of said wireless launcher and wireless receiver is amplified with the reception signal;
Antenna, said antenna are used to improve the emission and the intensity that receives signal of said wireless launcher and wireless receiver.
6. portable mobile wireless mine gas detector according to claim 1 is characterized in that said sensor comprises:
Firedamp sensor, carbon monoxide transducer and hydrogen sulfide sensor one of at least.
7. portable mobile wireless mine gas detector according to claim 6 is characterized in that, also comprises:
Display device, said display device are used to show the degree one of at least of gas, carbon monoxide and hydrogen sulfide gas;
Alarm; Said alarm links to each other with said processing unit, and said alarm is used for according to said processing unit the comparative result of the preset degree one of at least of the degree one of at least of current gas, carbon monoxide and hydrogen sulfide gas and gas, carbon monoxide and hydrogen sulfide gas being reported to the police.
8. portable mobile wireless mine gas detector according to claim 7 is characterized in that said display device is a charactron, and said alarm is loudspeaker, light emitting diode, hummer or electromagnetic shaker.
9. portable mobile wireless mine gas detector according to claim 1 is characterized in that, also comprises:
Power supply, said power supply are used for the sensor that links to each other with said power supply, said A/D converter, said processing unit, said storage unit and said emission and receiver power supply; With
Power supervisor, said power supervisor are used for said power supply is carried out management of charging and discharging and overload prevention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201665288U CN202204804U (en) | 2011-05-23 | 2011-05-23 | Portable wireless underground gas detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201665288U CN202204804U (en) | 2011-05-23 | 2011-05-23 | Portable wireless underground gas detector |
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| CN202204804U true CN202204804U (en) | 2012-04-25 |
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| CN2011201665288U Expired - Fee Related CN202204804U (en) | 2011-05-23 | 2011-05-23 | Portable wireless underground gas detector |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234880A (en) * | 2013-03-30 | 2013-08-07 | 成都佳锂科技有限公司 | Portable bluetooth fine particle detection instrument |
| CN103726877A (en) * | 2012-10-12 | 2014-04-16 | 镇江安扬安全设备科技有限公司 | Mine road soil pressure collecting and early-warning system |
| CN104196566A (en) * | 2014-08-20 | 2014-12-10 | 四川天微电子有限责任公司 | Coal mine protecting device facilitating monitoring point movement |
| CN104481593A (en) * | 2014-12-12 | 2015-04-01 | 成都英力拓信息技术有限公司 | Radio-frequency device-integrated sensor for monitoring gas in mine |
| CN104914437A (en) * | 2015-06-29 | 2015-09-16 | 哈尔滨东方报警设备开发有限公司 | Gas detection alarm device with ultrasonic rang finding |
| CN104914438A (en) * | 2015-06-29 | 2015-09-16 | 哈尔滨东方报警设备开发有限公司 | Handheld multi-gas detection alarm device with ultrasonic rang finding |
| CN110741419A (en) * | 2017-10-02 | 2020-01-31 | 松下知识产权经营株式会社 | Sensor device and gas monitoring system |
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2011
- 2011-05-23 CN CN2011201665288U patent/CN202204804U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726877A (en) * | 2012-10-12 | 2014-04-16 | 镇江安扬安全设备科技有限公司 | Mine road soil pressure collecting and early-warning system |
| CN103234880A (en) * | 2013-03-30 | 2013-08-07 | 成都佳锂科技有限公司 | Portable bluetooth fine particle detection instrument |
| CN104196566A (en) * | 2014-08-20 | 2014-12-10 | 四川天微电子有限责任公司 | Coal mine protecting device facilitating monitoring point movement |
| CN104481593A (en) * | 2014-12-12 | 2015-04-01 | 成都英力拓信息技术有限公司 | Radio-frequency device-integrated sensor for monitoring gas in mine |
| CN104481593B (en) * | 2014-12-12 | 2016-07-06 | 中国石油大学(华东) | A kind of less radio-frequency device that collects is for the sensor of gas in monitoring mine |
| CN104914437A (en) * | 2015-06-29 | 2015-09-16 | 哈尔滨东方报警设备开发有限公司 | Gas detection alarm device with ultrasonic rang finding |
| CN104914438A (en) * | 2015-06-29 | 2015-09-16 | 哈尔滨东方报警设备开发有限公司 | Handheld multi-gas detection alarm device with ultrasonic rang finding |
| CN110741419A (en) * | 2017-10-02 | 2020-01-31 | 松下知识产权经营株式会社 | Sensor device and gas monitoring system |
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