CN210554726U - Temperature measurement spray set and brake drum cooling system - Google Patents
Temperature measurement spray set and brake drum cooling system Download PDFInfo
- Publication number
- CN210554726U CN210554726U CN201921165957.6U CN201921165957U CN210554726U CN 210554726 U CN210554726 U CN 210554726U CN 201921165957 U CN201921165957 U CN 201921165957U CN 210554726 U CN210554726 U CN 210554726U
- Authority
- CN
- China
- Prior art keywords
- temperature
- brake drum
- spraying
- cooling system
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model belongs to the technical field of vehicle cooling equipment, and provides a temperature-measuring spraying device and a brake drum cooling system, wherein the temperature-measuring spraying device (1) comprises a shell (11) and is internally provided with a spraying pipeline; the water spraying side of the nozzle (12) is exposed out of the shell (11), and the water inlet side of the nozzle is connected with the first end of the spraying pipeline; the electromagnetic valve (13) is arranged on the spraying pipeline and controls the opening and closing of the spraying pipeline; the energy accumulator (14) is connected with the second end of the spraying pipeline and stores cooling liquid with certain pressure in advance; and an infrared detector (15) connected to the solenoid valve (13) and detecting the temperature of the hub region of the vehicle within a certain distance in the detection direction. The brake drum cooling system comprises a plurality of temperature-measuring spraying devices arranged beside the lane at intervals. With temperature measurement and spraying function integration in an organic whole, through a plurality of temperature measurement spray set that set up in succession, can realize the continuous monitoring to vehicle wheel hub region temperature and the automatic spray cooling to the brake drum.
Description
Technical Field
The invention relates to the technical field of vehicle cooling equipment, in particular to a temperature-measuring spraying device and a brake drum cooling system.
Background
During the running process of the vehicle, particularly for heavy trucks and other vehicles with large loads, the road accident rate is increased along with the increase of the gradient and the length of a longitudinal slope. Relevant studies have shown that: when the gradient of the longitudinal slope is larger than 6%, the accident rate of the train is increased by 3% compared with that of a normal horizontal road section. In order to reduce the accident rate, the vehicle running on the long and large longitudinal slope section in the downhill direction needs to be effectively controlled. The brake systems widely used on heavy goods vehicles in developing countries are pure drum brake systems, due to cost and technical monopoly.
The drum brake system has the problem that the brake drum is difficult to dissipate in time due to friction heat, so that the temperature of the brake drum is increased, the friction force is reduced, and the braking performance is reduced. The most common method for solving the problem is to cool the brake, the wheel hub, the wheel rim and other parts by using a truck water tank and discontinuously spraying water.
At present, the method for detecting the temperature and cooling the brake drum mainly comprises the steps of acquiring the temperature information of the brake drum through a vehicle-mounted temperature measuring device, directly controlling the opening of a vehicle water tank valve through a vehicle-mounted temperature measuring sensor, and automatically spraying and cooling. The existing structure of the vehicle needs to be improved in the cooling mode, and different mounting structures are designed according to different vehicle structures, so that the cooling mode is difficult to apply on a large scale.
Disclosure of Invention
The embodiment of the application provides a temperature measurement spray set and brake drum cooling system, can realize the regional automatic spray cooling of vehicle wheel hub under the condition that does not change the vehicle structure. The technical scheme of the utility model as follows:
in a first aspect of the embodiments of the present application, a temperature measurement spraying device is provided, the temperature measurement spraying device includes:
a housing, inside which a spray pipeline is arranged;
the water spraying side of the nozzle is exposed out of the shell, and the water inlet side of the nozzle is connected with the first end of the spraying pipeline;
the electromagnetic valve is arranged on the spraying pipeline and is configured to control the on-off of the spraying pipeline;
the energy accumulator is arranged in the shell, is connected with the second end of the spraying pipeline and is configured to store cooling liquid with certain pressure in advance;
an infrared detector disposed in the housing, connected to the solenoid valve, configured to detect a temperature of a vehicle hub region within a certain distance in a detection direction.
In one implementation of the embodiments of the present application, the nozzle is a solid cone nozzle.
In one implementation of the embodiment of the present application, a plurality of the nozzles are arranged in parallel outside the housing.
In a second aspect of the embodiment of the application, a brake drum cooling system is provided, and the brake drum cooling system comprises a plurality of temperature measurement spraying devices.
In an implementation manner of the embodiment of the application, the plurality of temperature measurement spraying devices are arranged beside the lane at intervals.
In an implementation manner of the embodiment of the application, the brake drum cooling system further comprises a liquid storage barrel or a pump station, and the liquid storage barrel or the pump station is connected with an energy accumulator of the temperature measurement spraying device through a pipeline to provide cooling liquid.
In an implementation manner of the embodiment of the application, a hydraulic interface connected with the pipeline and an electric interface connected with the electric power circuit are further arranged on the outer side of the shell of the temperature measurement spraying device.
In an implementation manner of the embodiment of the application, the plurality of temperature measuring spraying devices are divided into two groups and are respectively arranged on one side of the road and a central separation band of the road.
In an implementation manner of the embodiment of the application, the brake drum cooling system further includes a monitoring base station configured to monitor and control an operation state of the brake drum cooling system.
In an implementation manner of the embodiment of the application, the temperature measurement spraying device further includes a communication module configured to implement signal connection between the temperature measurement spraying device and the signal base station.
The beneficial effects of the embodiment of the application at least comprise:
according to the temperature-measuring spraying device and the brake drum cooling system provided by the embodiment of the application, the infrared detector in the temperature-measuring spraying device detects the temperature of the vehicle hub area, so that the on-off of the electromagnetic valve is controlled, when the temperature of the hub area is too high, the electromagnetic valve is switched on, the nozzle carries out spraying cooling on the vehicle hub, the temperature-measuring and spraying functions are integrated, and the installation and the arrangement are convenient; a plurality of temperature measurement spray set intervals set up at the lane side, can realize the continuous monitoring to vehicle wheel hub region temperature to under the condition that does not change the vehicle structure, realize the automatic spray cooling to the brake drum, thereby the guarantee vehicle is at the safety of traveling of growing up the longitudinal gradient highway section.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a temperature measurement spraying device provided in an embodiment of the present application;
fig. 2 is a schematic view of a detection area of a temperature measurement spraying device provided in the embodiment of the present application;
fig. 3 is a schematic structural diagram of a brake drum cooling system provided in an embodiment of the present application.
The reference numerals denote:
1. a temperature measuring spraying device; 11. a housing; 111. a hydraulic interface; 112. a power interface; 12. a nozzle; 13. an electromagnetic valve; 14. an accumulator; 15. an infrared detector; 16. a power supply module; 17. a communication module; 2. monitoring a base station; 3. a liquid storage barrel; 4. and a pump station.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
The embodiment of the application provides a temperature measurement spray set, as shown in fig. 1, in the embodiment of the application, temperature measurement spray set 1 includes:
a housing 11, inside which is provided a shower line (line between 14, 13 and 12 in fig. 1);
the water spraying side of the nozzle 12 is exposed out of the shell 11, and the water inlet side of the nozzle is connected with the first end of the spraying pipeline;
an electromagnetic valve 13 provided on the shower line and configured to control opening and closing of the shower line;
an accumulator 14 disposed in the housing 11 and connected to the second end of the spray line, and configured to pre-store a certain pressure of the cooling liquid;
and an infrared detector 15 provided in the housing 11, connected to the solenoid valve 13, and configured to detect a temperature of a hub area of the vehicle within a certain distance in a detection direction.
In an implementation manner of the embodiment of the application, the shell can be arranged to be a cuboid, the water spraying side of the nozzle is arranged outside the shell, and the electromagnetic valve, the energy accumulator and the infrared detector are all arranged inside the shell. The fixing device can be arranged below the shell and connected with a guardrail beside the lane, so that the temperature measuring and spraying device is fixed at the end of the guardrail or the guardrail upright post of the highway. The protection level of the shell can reach IP 65. The shell can be also provided with an opening corresponding to the infrared detector. The probe part of the infrared detector can extend out through the opening to obtain the temperature of the vehicle hub area.
In this application embodiment, the energy storage ware also can bury underground, links to each other with the solenoid valve that sets up in the casing inside through spraying the pipeline. The temperature of the hub area of the vehicle can be obtained only from the surface of the central portion of the hub or from the entire surface of the hub. The brake drum is arranged in a rim of a vehicle, and the temperature of the brake drum can influence the temperature of the area of the hub of the vehicle, so that the temperature of the brake drum can be judged by acquiring the temperature of the area of the hub of the vehicle. The infrared detector has a test area, and when a vehicle passes by, the infrared detector collects infrared radiation of a vehicle hub area and then gathers the infrared radiation on the infrared sensor. The infrared detector converts the infrared signal into an electric signal so as to control the opening and closing of the electromagnetic valve. The infrared signal acquired by the infrared detector is related to the temperature of the vehicle hub area, so that the infrared detector controls the opening and closing of the electromagnetic valve according to the acquired highest temperature of the vehicle hub area.
In another implementation manner of the embodiment of the application, the infrared detector may adopt a pyroelectric infrared sensor. The pyroelectric infrared sensor adopts a material with high thermoelectric coefficient as a detection element, the detection element converts detected and received infrared radiation into a voltage signal, and the voltage signal is amplified by a field effect arranged in the probe and then is output outwards. The higher the temperature of the vehicle hub area is, the larger the output voltage signal is, so that the temperature threshold of the vehicle hub which needs to be cooled by spraying can be determined as the set temperature, and the output voltage corresponding to the set temperature can be determined as the set voltage. By selecting a proper electromagnetic valve, when the output voltage signal reaches the set voltage, the electromagnetic valve is opened. And after the vehicle completely runs out of the temperature measurement area, closing the electromagnetic valve and stopping spraying.
Preferably, a time delay device, such as a time delay circuit or a timer, can be arranged between the infrared detector and the electromagnetic valve, so that after the vehicle is driven out of the temperature measurement area, the electromagnetic valve is closed after a certain time delay, the vehicle is driven out of the temperature measurement area, and when the vehicle enters the spraying area, the nozzle can continuously spray cooling liquid to perform spraying cooling.
In the embodiment of the application, a relay can be arranged between the pyroelectric infrared sensor and the electromagnetic valve. The electromagnetic valve is set to be a normally closed electromagnetic valve, when the output voltage signal reaches the set output voltage, the relay is closed, the circuit is electrified, the normally closed electromagnetic valve is opened, and the spray nozzle is communicated with the spray pipeline to spray and cool the vehicle hub.
In other implementation manners of the embodiment of the application, because the temperatures of the vehicle hub areas are different, the infrared wavelengths radiated by the vehicle hub areas are different, the optical filter can be arranged at the window arranged at the top end of the sensor by selecting the optical filter with a proper wavelength range, so that the infrared detector acquires an infrared signal only when the temperature of the vehicle hub areas is higher than a set temperature, and the electromagnetic valve is controlled to be opened.
In another implementation manner of the embodiment of the present application, the infrared detector may be an infrared thermometer or an infrared thermal imaging sensor, the infrared detector is connected to the temperature controller, and the temperature controller controls the electromagnetic valve to open and close. The temperature controller is an integrated intelligent temperature control instrument, and integrates temperature measurement, regulation and driving, and the instrument directly outputs thyristor trigger signals to drive various thyristor loads. Therefore, a set temperature for spraying and cooling the vehicle hub can be preset in the temperature controller, and when the temperature of the vehicle hub area detected by the infrared detector is higher than the set temperature, the temperature controller controls the electromagnetic valve to be opened; when the temperature of the vehicle hub area is not more than the set temperature, the temperature controller controls the electromagnetic valve to be closed.
The nozzle 12 may be a solid cone nozzle, and a plurality of nozzles 12 are arranged in parallel outside the housing 11.
In an implementation manner of the embodiment of the application, the number of the nozzles is not less than two. The nozzles are arranged in parallel outside the shell and are inclined upwards at a certain angle. The nozzle adopts a solid cone nozzle to generate a solid cone liquid spray, and can cover the hub area of the vehicle. The nozzle may be located at a height slightly greater than the height of the vehicle hub center from the ground.
In other implementation manners of the embodiment of the application, three nozzles can be arranged, wherein two nozzles are horizontally arranged in parallel and are inclined upwards at a certain angle; the other nozzle is arranged at the lower position of the centers of the other two nozzles, and the nozzles are horizontally arranged.
In the embodiment of the application, the nozzle is connected with the energy accumulator, the energy accumulator stores cooling liquid with certain pressure and capacity in advance, the starting time of spraying can be shortened, the accuracy and pertinence of spraying are improved, and the condition that spraying is delayed when a vehicle is driven away from a spraying area is prevented.
Further, in order to ensure that the vehicle hub does not reach the spraying area later than the cooling liquid at the same time, relevant parameters of the temperature measurement spraying device need to be designed. The horizontal view field of the infrared detector should not exceed the boundary between the temperature detection area and the spraying area, and when a vehicle passes through the temperature detection area, the vehicle firstly passes through the temperature detection area and then passes through the spraying area.
As shown in FIG. 2, the horizontal field angle α, the farthest measurement distance s, and the detection period T of the infrared detector can be set according to the setting position of the temperature measuring device, when the infrared thermal imaging sensor is used, in order to accurately obtain and process brake drum temperature data, the number of pixels in a heat-temperature image generated by the sensor cannot be too small, but is limited by the detection period of the sensor, the number of pixels cannot be too large, otherwise, the power consumption of the sensor is too large, and the number of pixels acquired in one-time detection of a general non-contact infrared thermal imaging sensor is set within the range of 200-1000.
In order to ensure that each vehicle hub can form images in the heat matrix and avoid the condition of missed detection, the parameters meet the requirements
Where v is the speed at which the vehicle passes the detection.
The horizontal field angle common value of the infrared detector is between 30 and 120 degrees; the farthest measurement distance is limited by power, and is about 10 meters under the condition that the power is lower than 0.5W. The detection period affects the power consumption of the sensor and the accuracy of the sampled data, and the shorter the detection period, the higher the power consumption. Typically the sensing period may be set between 10-1000 milliseconds.
The linear distance between the infrared detector and the vehicle hub is limited by the actual road conditions. Illustratively, on a one-way two-lane expressway, when the temperature-measuring spray device is arranged beside an outer lane, the distance between the temperature-measuring spray device and the right wheels of the outer lane vehicle is about 4 meters, and the distance between the temperature-measuring spray device and the right wheels of the inner lane vehicle is about 8 meters. When the temperature-measuring spraying device is arranged on the central separation zone, the distance between the temperature-measuring spraying device and the left wheel of the vehicle on the inner lane is about 0.4 m, and the distance between the temperature-measuring spraying device and the left wheel of the vehicle on the outer lane is about 4 m. Exemplary values for the infrared detector parameters are shown in table 1 below.
TABLE 1
As shown in fig. 2, when the temperature measurement spraying device sprays and cools the vehicle hub region, the vehicle hub needs to be controlled not to arrive at the spraying region later than the cooling liquid, and the distance between the infrared detector and the nozzle is not too far due to the adoption of the temperature measurement spraying integration, so that the spraying angle of the nozzle needs to be designed.
the spray angle β is determined by the vehicle speed v, the spray pressure p and the distance S' between the nozzle and the wheel
Namely, it is
Wherein v' is the initial speed of the cooling liquid spray. The initial velocity v' of the cooling liquid spray can be calculated by the bernoulli equation:
wherein p is0Is the standard atmospheric pressure and ρ is the cooling liquid density. Considering the influence of wind speed and wind direction, the spray angle of the nozzle should be reduced as much as possible. Preferably, the spraying angle is between 30 and 40 degrees, and the spraying pressure is 1.6 MPa. Exemplary values for the spray angle are shown in table 2 below.
TABLE 2
| Spraying pressure intensity | Vehicle speed | Spray angle |
| 1.6MPa | 10m/s | 20° |
| 1.6MPa | 25m/s | 52° |
| 1.0MPa | 10m/s | 25° |
| 1.0MPa | 25m/s | 68° |
The temperature-measuring spraying device can also be provided with a power module 16, and the power module 16 is arranged in the shell 11 and provides electric energy for the temperature-measuring spraying device 11.
In an implementation manner of the embodiment of the application, the power module can be connected with a power line of the pump station and powered by commercial power.
The embodiment of the application provides a brake drum cooling system, as shown in fig. 3, the brake drum cooling system includes a plurality of temperature measurement spray sets 1, and a plurality of temperature measurement spray sets 1 interval sets up at the lane side.
In an implementation manner of the embodiment of the application, the temperature measurement spraying devices are arranged on two sides of a road on the longitudinal slope section at equal intervals, the setting interval between the temperature measurement spraying devices is 15-30 meters, the setting interval is related to the gradient of the longitudinal slope section, and the larger the gradient is, the smaller the setting interval is.
In another implementation manner of the embodiment of the application, the plurality of temperature measuring spraying devices 1 are divided into two groups and respectively arranged on one side of the road and a central separation band of the road. Therefore, the brake drum cooling system can detect the temperature of the brake drum of the vehicle on a single lane, can also detect the temperature of the brake drum of the vehicle on multiple lanes such as two-way four-lane, and automatically sprays and cools.
The brake drum cooling system further comprises a liquid storage barrel 3 or a pump station 4, and the liquid storage barrel 3 or the pump station 4 is connected with an energy accumulator 14 of the temperature-measuring spraying device 1 through a pipeline to provide cooling liquid.
In an implementation of this application embodiment, the stock solution bucket provides cooling liquid for the energy storage ware, and stock solution bucket and energy storage ware are all buried underground, link to each other with the nozzle through the pipeline. The accumulator is an energy storage device, can convert energy in a system into compression energy or potential energy at proper time for storage, and can convert the compression energy or the potential energy into hydraulic pressure or air pressure energy for release when the system needs.
In another implementation manner of the embodiment of the application, the pump station provides cooling liquid for the energy accumulator. Meanwhile, the pump station is connected with a power module of the temperature measurement spraying device through a power line.
In the embodiment of the application, the cooling liquid can be water or other solutions, and can be selectively drained when the temperature is higher in summer; when the temperature is lower in winter, the cooling liquid can be a cooling solution taking alcohols and an antifreezing agent as main components, so that the cooling liquid is prevented from freezing on the road surface.
In the embodiment of the present application, a hydraulic interface 111 connected to the pipeline and an electric interface 112 connected to the electric power line are further disposed on the outer side of the casing 11 of the temperature measurement spraying device 1.
As shown in fig. 3, the brake drum cooling system may further include a monitoring base station 2 configured to monitor and control an operation state of the brake drum cooling system.
In an implementation manner of the embodiment of the application, a monitoring center upper computer can be arranged in the monitoring base station, and the monitoring center upper computer can be used for setting an application mode of a brake drum cooling system. The brake drum cooling system can be applied to long and large longitudinal slope sections of a highway, and can also be applied to longitudinal slopes and steep slope sections of a grade highway, and parameters of the brake drum cooling system, including the horizontal field angle and the detection period of an infrared detector, the spraying angle and the delay time of a nozzle, are adjusted according to different application scenes. The long and large longitudinal slope refers to the situation that longitudinal slopes are accumulated on a certain road section in order to overcome natural height difference of the road.
in the embodiment of the application, the temperature measurement spraying device 1 may further include a communication module 17 configured to realize signal connection between the temperature measurement spraying device 1 and the signal base station, the monitoring base station acquires the operation state, the fault information, and the like of the temperature measurement spraying device through the communication module of the temperature measurement spraying device, and the monitoring base station uniformly sets the operation parameters of the temperature measurement spraying device, including the horizontal field angle α, the farthest measurement distance s, the detection period T, and the like of the infrared detector, and uniformly sends the parameters to the plurality of temperature measurement spraying devices through the communication module.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, other embodiments that do not depart from the gist of the invention are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a temperature measurement spray set, its characterized in that, temperature measurement spray set (1) includes:
a shell (11) in which a spray pipeline is arranged;
the water spraying side of the nozzle (12) is exposed out of the shell (11), and the water inlet side of the nozzle is connected with the first end of the spraying pipeline;
an electromagnetic valve (13) provided on the shower line and configured to control opening and closing of the shower line;
an accumulator (14) disposed in the housing (11) and connected to the second end of the spray line, configured to pre-store a cooling liquid at a pressure;
an infrared detector (15), arranged in the housing (11), connected to the solenoid valve (13), configured to detect the temperature of the vehicle hub area within a certain distance in the detection direction.
2. The thermometric spray device according to claim 1, wherein said nozzle (12) is a solid cone nozzle.
3. The temperature-measuring spraying device according to claim 2, wherein a plurality of the nozzles (12) are arranged in parallel outside the housing (11).
4. Brake drum cooling system, characterized in that it comprises a plurality of thermometric spray devices (1) according to any of claims 1-3.
5. The brake drum cooling system according to claim 4, wherein the plurality of temperature measuring spray devices (1) are arranged beside the lane at intervals.
6. The brake drum cooling system according to claim 4, further comprising a liquid storage barrel (3) or a pump station (4), wherein the liquid storage barrel (3) or the pump station (4) is connected with the energy accumulator (14) of the temperature measurement spraying device (1) through a pipeline to provide cooling liquid.
7. The brake drum cooling system according to claim 6, wherein a hydraulic interface (111) connected with the pipeline and an electric interface (112) connected with an electric power circuit are further arranged on the outer side of the shell (11) of the temperature-measuring spraying device (1).
8. The brake drum cooling system according to claim 4, wherein the plurality of temperature-measuring spray devices (1) are divided into two groups, and are respectively arranged on one side of the road and a central separation strip of the road.
9. Brake drum cooling system according to claim 4, characterized in that the brake drum cooling system further comprises a monitoring base station (2) configured to monitor and control the operational state of the brake drum cooling system.
10. Brake drum cooling system according to claim 9, characterized in that the thermometric spray device (1) further comprises a communication module (17) configured to enable signal connection of the thermometric spray device (1) with the monitoring base station (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921165957.6U CN210554726U (en) | 2019-07-23 | 2019-07-23 | Temperature measurement spray set and brake drum cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921165957.6U CN210554726U (en) | 2019-07-23 | 2019-07-23 | Temperature measurement spray set and brake drum cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210554726U true CN210554726U (en) | 2020-05-19 |
Family
ID=70676291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921165957.6U Active CN210554726U (en) | 2019-07-23 | 2019-07-23 | Temperature measurement spray set and brake drum cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210554726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248984A (en) * | 2020-10-30 | 2021-01-22 | 西南交通大学 | Automatic cooling system for truck brake pads |
-
2019
- 2019-07-23 CN CN201921165957.6U patent/CN210554726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112248984A (en) * | 2020-10-30 | 2021-01-22 | 西南交通大学 | Automatic cooling system for truck brake pads |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11312383B2 (en) | Road surface condition prediction system, driving assistance system, road surface condition prediction method, and data distribution method | |
| KR100698585B1 (en) | Fog preventing system | |
| CN103413442B (en) | Based on expressway fog early warning system and the method for early warning of the monitoring of intervisibility distance | |
| CN103210562A (en) | Vehicle charger safety system and method | |
| CN210554726U (en) | Temperature measurement spray set and brake drum cooling system | |
| CN106677006A (en) | Expressway tunnel portal road surface deicing device | |
| CN105954316A (en) | Indoor experimental device and method for icy pavement detection | |
| CN112211062A (en) | Intelligent road surface anti-icing control system | |
| CN204679658U (en) | A kind of active infrared detection system icy on road | |
| CN104091459B (en) | Heavy weather intelligent detection displaying system | |
| KR101570511B1 (en) | Device for prohibit road freezing using solar ray generator | |
| CN205679553U (en) | A kind of indoor experimental apparatus of detection icy on road | |
| KR101096073B1 (en) | Freezing avoidance system of road using natural electricity energy and geotherman energy | |
| CN209581382U (en) | A kind of data acquisition device based on wireless communication | |
| CN205861918U (en) | A kind of road surfaces knot ice detecting device | |
| CN214623936U (en) | Temperature measurement early warning system for road vehicles on long downhill section and mountain continuous downhill section | |
| CN104890533B (en) | A kind of tramcar control system and maximum operational speed control method | |
| CN110375517B (en) | Brake drum cooling system | |
| CN110579812B (en) | On-board polarization method detection icing early warning system | |
| CN208126605U (en) | A kind of highway bridge bridge floor freezes monitoring and warning device | |
| CN211403563U (en) | Road detection device that freezes based on video detection technique | |
| CN208026865U (en) | A kind of online range-measurement system of powerline ice-covering | |
| EP3729147B1 (en) | Directed freezing precipitation detection device and method | |
| CN215752432U (en) | Mountain region tourism cogwheel rail train track heating system and track traffic system | |
| CN107024727A (en) | A kind of portable Road Weather ambient intelligence detecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |