CN103196519A - Alarm device for detecting seeper depth in bridge opening and detection method thereof - Google Patents
Alarm device for detecting seeper depth in bridge opening and detection method thereof Download PDFInfo
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- CN103196519A CN103196519A CN2013100849235A CN201310084923A CN103196519A CN 103196519 A CN103196519 A CN 103196519A CN 2013100849235 A CN2013100849235 A CN 2013100849235A CN 201310084923 A CN201310084923 A CN 201310084923A CN 103196519 A CN103196519 A CN 103196519A
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Abstract
An alarm device for detecting seeper depth in a bridge opening comprises a microprocessor for processing signals, wherein a signal input end of the microprocessor is connected with a resistance-type liquidometer through an A/ D (analog/ digital) conversion circuit; an alarm end of the microprocessor is connected with an alarm circuit; and a display end of the microprocessor is connected with an LED display. A detection method thereof comprises the following steps: firstly, setting a water depth threshold in the microprocessor, inputting voltage output by the resistance-type liquidometer into the microprocessor through an A/ D converter so as to obtain a resistance value R; secondly, according to a formula, obtaining a water depth h, and displaying the water depth on the LED display; and finally, judging whether the water depth is larger than an alarm value, and if the water depth is larger than the alarm value, informing relevant authorities of draining and maintaining traffic so as to avoid security incidents. The alarm device has the characteristics of simple structure and sensitive response; and through the alarm device and the detection method, seeper situation in the bridge opening can be provided for drivers effectively in time.
Description
Technical field
The present invention relates to the detection of liquid level gauge and the control field of microprocessor, be specifically related to a kind of warning device and detection method thereof that detects the bridge opening depth of accumulated water.
Background technology
On rainy day, when especially descending torrential rain, because bridge opening itself just belongs to low-lying land, moreover the sewers unreasonable structure that has, can not in time precipitation be drained, thereby cause the ponding in the bridge opening.Vehicle is relatively dangerous through out-of-date meeting, and in July, 2012 for example is when the attack of torrential rain is suffered in Beijing, capital, the depth of water has reached 4 meters under the Wide Channel Gate bridge of Dongcheng District, Beijing, have many cars to be submerged in the deep water, wherein a driver after stranded 3 hours, unfortunately dies in an accident in 4 meters dark ponding.Also can show at bridge if can detect the degree of depth of water, then just can avoid accidents effectively.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this invention is to provide a kind of warning device and detection method thereof that detects the bridge opening depth of accumulated water, have simple in structurely, sensitive characteristics can provide the situation of the ponding in the bridge opening for the driver timely and effectively.
To achieve these goals, the technical solution used in the present invention is: a kind of warning device that detects the bridge opening depth of accumulated water, include the microprocessor for the treatment of signal, the signal input part of microprocessor links to each other with resistance type liquidometer by the A/D change-over circuit, the warning end of microprocessor links to each other with warning circuit, and the display end of microprocessor links to each other with light-emitting diode display.
Measure the device of bridge opening depth of accumulated water with resistance type liquidometer, comprise that the degree of depth according to water level obtains different resistance values by resistance type liquidometer, convert resistance value to digital signal with A/D converter, microprocessor is handled the degree of depth that obtains water to digital signal, show the degree of depth of water on the LED screen and work as ponding to reach a certain height, very easily the warning circuit during initiation potential.
Described resistance type liquidometer causes that because liquid level changes resistance between electrode changes, and reacts the situation of liquid level again according to resistance variations.
Described resistance measurement circuit is to be finished by bridge diagram;
A kind of detect the bridge opening depth of accumulated water detection method, include following steps:
At first, depth of water threshold value is set in microprocessor, the voltage of resistance type liquidometer output inputs in the microprocessor by A/D converter, according to formula
Obtain resistance value R;
In the formula: R1, R2, R3 are three brachium pontis of measuring bridge, and Vi is the voltage signal that makes bridge diagram work, and Vo is the voltage signal that is input to A/D converter;
Secondly, according to formula
Obtain the degree of depth h of water, and be presented on the LED screen;
In the formula: H, the total length of h-resistor rod and liquid level; The resistivity of p-resistor rod; A-resistor rod sectional area;
At last, whether judge the depth of water greater than warning value, as if then notifying relevant departments to carry out draining greater than warning value and maintaining traffic, avoid the generation of security incident.
Advantage of the present invention is:
The resistance type liquidometer measurement range is wide, simple in structure, can under mal-condition, work, this is well suited for environment of the present invention just, the present invention is simple and clear, device can reflect the current depth of water timely when in the bridge opening ponding being arranged, and reminds the driver, has avoided the driver because not knowing accidents such as the automobile that situation takes place in the bridge opening is drowned, casualties effectively.Need to give notice to municipal sector and traffic department simultaneously if ponding reaches the state of alert, municipal sector's dredging sewer is drained precipitation timely, and traffic department directs traffic, and avoids dangerous generation.If judge no ponding, then the LED screen can be used for the broadcast of transport information.
Description of drawings
Fig. 1 is hardware system synoptic diagram of the present invention.
Fig. 2 is simple and easy scheme of installation of the present invention.
Fig. 3 is workflow synoptic diagram of the present invention.
Fig. 4 is workflow synoptic diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1, a kind of warning device that detects the bridge opening depth of accumulated water, include the microprocessor for the treatment of signal, the signal input part of microprocessor links to each other with resistance type liquidometer by the A/D change-over circuit, the warning end of microprocessor links to each other with warning circuit, and the display end of microprocessor links to each other with light-emitting diode display.
Referring to Fig. 2, Fig. 2 is for the resistance type liquidometer schematic diagram of measuring, electrode 1 is made up of two root timber material, the resistor rod with big resistivity that sectional area is identical, specifically be that the depth range that may reach according to ponding is installed two electrodes and drawn with cable, when ponding, two resistor rod conductings can record its resistance value by bridge diagram, thereby obtain the current depth of water.Insulation sleeve 2, the resistor rod two ends are fixing by insulation sleeve 2, and and external insulation, guarantee that just two resistor rods could conducting when ponding.Resistance value when measuring bridge 3 is used for measuring two resistor rod conductings; The resistance of whole sensor is
In the formula: H, the total length of h-resistor rod and liquid level; The resistivity of p-resistor rod; A-resistor rod sectional area.After the material of this sensor, structure and size are determined, K
1, K
2Be constant, resistance sizes and liquid level are inversely proportional to; Input Vi among the figure is the voltage signal that makes bridge diagram work, and output Vo is the voltage signal that is input to A/D converter.Bridge diagram among the available figure of the measurement of resistance is finished.When in the bridge opening ponding being arranged, thereby two electrodes obtain corresponding resistance value by the liquid conducting, and then different resistance values obtain the different degree of depth.Microprocessor converts thereof into the degree of depth of the water that will export according to the signal of input, and is presented on the LED display.If when resistance value is very big, illustrating does not have ponding, LED display can be used for the broadcast of transport information, kills two birds with one stone.Warning circuit is when the depth of water reaches the warning degree of depth, then can send audible and visual alarm and alerting signal, gives notice to municipal sector and traffic department simultaneously, municipal sector's dredging sewer, timely precipitation is drained, traffic department directs traffic, and avoids dangerous generation.
Fig. 3 is simple mount scheme, resistance type liquidometer 4 assigns into the low-lying point in the bridge opening, guarantee that the water level of measuring is the water level of low-lying place in the current bridge opening, provide accurate data to people, 5 needs of display screen are installed in showy place, when ponding, are showing the current depth of water constantly, so that the driver understands the situation in the bridge timely, then can be installed on the bridge.
Fig. 3 is the flow process of whole invention work, and when in the bridge opening ponding being arranged, system starts working, two electrode conductions of resistance type liquidometer, along with the difference of the depth of water obtains different resistance values, the voltage of output inputs in the microprocessor by A/D converter, according to formula
Obtain resistance value R, then according to formula
Obtain the degree of depth h of water, constantly showing the current depth of water on the LED display, judge that simultaneously whether the depth of water is greater than warning value, whenever vehicle being arranged through out-of-date, the driver can be clear that the depth of water this moment, thereby judge that vehicle could pass through, avoided because of the take a risk generation of the security incident after out-of-date of the degree of depth of water in the uncertain bridge opening.If the depth of water then need be notified relevant departments to carry out draining greater than warning value and maintain traffic, avoid the generation of security incident.
A kind of detect the bridge opening depth of accumulated water detection method, include following steps:
At first, depth of water threshold value is set in microprocessor, supposes it is 0.5m, the voltage of resistance type liquidometer output inputs in the microprocessor by A/D converter, according to formula
In the formula: R1, R2, R3 are three brachium pontis of measuring bridge, and its value is respectively 18K Ω, 8.2K Ω, 180 Ω, and Vi is the voltage signal that makes bridge diagram work, and its value is 5V, and Vo is the voltage signal that is input to A/D converter, and its value is 0.6V.Be 800 Ω thereby calculate resistance value R.
Secondly, according to formula
In the formula: H, the total length of h-resistor rod and liquid level suppose that H is 1m; The resistivity of p-resistor rod is made as 15 Ω m; A-resistor rod sectional area is made as 0.03m
2Thereby the degree of depth h that calculates water is 0.2m, and is presented on the LED screen; At last, whether judge the depth of water greater than warning value 0.5m, as if then notifying relevant departments to carry out draining greater than warning value and maintaining traffic, avoid the generation of security incident.
Claims (3)
1. warning device that detects the bridge opening depth of accumulated water, include the microprocessor for the treatment of signal, it is characterized in that, the signal input part of microprocessor links to each other with resistance type liquidometer by the A/D change-over circuit, the warning end of microprocessor links to each other with warning circuit, and the display end of microprocessor links to each other with light-emitting diode display.
One kind detect the bridge opening depth of accumulated water detection method, it is characterized in that, may further comprise the steps:
At first, depth of water threshold value is set in microprocessor, the voltage of resistance type liquidometer output inputs in the microprocessor by A/D converter, according to formula
Obtain resistance value R;
In the formula: R1, R2, R3 are three brachium pontis of measuring bridge, and Vi is the voltage signal that makes bridge diagram work, and Vo is the voltage signal that is input to A/D converter;
Secondly, according to formula
Obtain the degree of depth h of water, and be presented on the LED screen;
In the formula: H, the total length of h-resistor rod and liquid level;
The resistivity of-resistor rod; A-resistor rod sectional area;
At last, whether judge the depth of water greater than warning value, as if then notifying relevant departments to carry out draining greater than warning value and maintaining traffic, avoid the generation of security incident.
According to claim 2 a kind of detect the bridge opening depth of accumulated water detection method, it is characterized in that, may further comprise the steps:
At first, depth of water threshold value is set in microprocessor, supposes it is 0.5m, the voltage of resistance type liquidometer output inputs in the microprocessor by A/D converter, according to formula
In the formula: R1, R2, R3 are three brachium pontis of measuring bridge, and its value is respectively 18K Ω, 8.2K Ω, 180 Ω, and Vi is the voltage signal that makes bridge diagram work, and its value is 5V,
Vo is the voltage signal that is input to A/D converter, and its value is 0.6V;
Be 800 Ω thereby calculate resistance value R.
Secondly, according to formula
In the formula: H, the total length of h-resistor rod and liquid level suppose that H is 1m;
The resistivity of-resistor rod is made as 15 Ω m; A-resistor rod sectional area is made as 0.03 ㎡; Thereby the degree of depth h that calculates water is 0.2m, and is presented on the LED screen;
At last, whether judge the depth of water greater than warning value 0.5m, as if then notifying relevant departments to carry out draining greater than warning value and maintaining traffic, avoid the generation of security incident.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100849235A CN103196519A (en) | 2013-03-18 | 2013-03-18 | Alarm device for detecting seeper depth in bridge opening and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100849235A CN103196519A (en) | 2013-03-18 | 2013-03-18 | Alarm device for detecting seeper depth in bridge opening and detection method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215303A (en) * | 2014-08-20 | 2014-12-17 | 苏州科技学院 | Floater variable resistance sensing type tunnel ponding warning device |
| CN106759777A (en) * | 2017-02-21 | 2017-05-31 | 江门市第职业高级中学 | For the system and device and its processing method of the warning of bridge opening ponding |
| CN106991526A (en) * | 2017-03-23 | 2017-07-28 | 福建农林大学 | A kind of road surface drainage infiltration neatly risk supervision device and its implementation |
| CN108414050A (en) * | 2018-04-13 | 2018-08-17 | 航天科技控股集团股份有限公司 | Electric pole type liquid level detection circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900664A (en) * | 2005-07-19 | 2007-01-24 | 南京大学 | Resistance type water level sensor |
| CN101561305A (en) * | 2009-06-05 | 2009-10-21 | 长沙理工大学 | Monitoring and early-warning system and monitoring and early-warning method of accumulated water under bridge or on road surface of tunnel |
| CN201964931U (en) * | 2011-02-18 | 2011-09-07 | 王彦平 | Solar water level measuring device |
-
2013
- 2013-03-18 CN CN2013100849235A patent/CN103196519A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900664A (en) * | 2005-07-19 | 2007-01-24 | 南京大学 | Resistance type water level sensor |
| CN101561305A (en) * | 2009-06-05 | 2009-10-21 | 长沙理工大学 | Monitoring and early-warning system and monitoring and early-warning method of accumulated water under bridge or on road surface of tunnel |
| CN201964931U (en) * | 2011-02-18 | 2011-09-07 | 王彦平 | Solar water level measuring device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215303A (en) * | 2014-08-20 | 2014-12-17 | 苏州科技学院 | Floater variable resistance sensing type tunnel ponding warning device |
| CN106759777A (en) * | 2017-02-21 | 2017-05-31 | 江门市第职业高级中学 | For the system and device and its processing method of the warning of bridge opening ponding |
| CN106991526A (en) * | 2017-03-23 | 2017-07-28 | 福建农林大学 | A kind of road surface drainage infiltration neatly risk supervision device and its implementation |
| CN108414050A (en) * | 2018-04-13 | 2018-08-17 | 航天科技控股集团股份有限公司 | Electric pole type liquid level detection circuit |
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Application publication date: 20130710 |