CN112185075A - Automatic machine room on-duty alarm system and alarm method - Google Patents
Automatic machine room on-duty alarm system and alarm method Download PDFInfo
- Publication number
- CN112185075A CN112185075A CN202011051096.6A CN202011051096A CN112185075A CN 112185075 A CN112185075 A CN 112185075A CN 202011051096 A CN202011051096 A CN 202011051096A CN 112185075 A CN112185075 A CN 112185075A
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- rod
- machine room
- alarm system
- sensor group
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
Abstract
The invention discloses an automatic machine room on-duty alarm system and an alarm method, wherein the alarm system comprises the following steps: the mounting groove is formed in the top of the machine room, a plurality of cross rods are longitudinally and movably arranged in the mounting groove, a plurality of telescopic rods are movably arranged on each cross rod, and the bottom ends of the telescopic rods are provided with collecting devices; the environment collection device includes: the first motor device is provided with a bottom end of the telescopic rod, a first sensor group is arranged at the bottom end of a rotating shaft of the first motor device, a connecting rod is arranged on the side wall of the rotating shaft of the first motor device, and a second sensor group is arranged at the bottom end of the connecting rod. According to the invention, the position of the cross rod and the position of the telescopic rod on the cross rod are adjusted, so that one acquisition device corresponds to the upper part of each computer operation platform, and the abnormal condition of the surrounding environment of a single computer device in a machine room can be acquired in time; the acquisition device can acquire the peripheral environmental data of the host and the peripheral environmental data of the computer console, so that the acquired peripheral environmental data of the single computer device is more accurate and reliable, and the data is comprehensive and has application value.
Description
Technical Field
The invention relates to the technical field of machine room safety management, in particular to an automatic machine room on-duty alarm system and an alarm method.
Background
With the rapid development of computer technology, network communication technology, and multimedia technology, computer applications have spread throughout every corner of society. The computer room is used as a centralized operation site for computers and network equipment, and the safety management of the computer room is very important.
In the prior art, the internal environment of an automatic machine room (an unattended machine room) is usually detected by a sensor arranged on the wall in the machine room; however, the detection result of the sensor represents the overall level of the environment in the machine room, and the detection is not performed on the environment around a single device in the machine room, and particularly when the machine room is large, abnormal conditions cannot be acquired in time, so that dangerous accidents occur.
Disclosure of Invention
The embodiment of the invention provides an automatic machine room on-duty alarm system and an alarm method, which are used for solving the problems in the background technology.
The embodiment of the invention provides an automatic machine room on-duty alarm system, which comprises: the monitoring and alarming system is electrically connected with a monitoring center through a communication module, and the monitoring center is electrically connected with an alarming device;
the monitoring alarm system comprises: the mounting groove is formed in the top of the machine room, a plurality of cross rods are longitudinally and movably arranged in the mounting groove, a plurality of telescopic rods are movably arranged on each cross rod, and a collecting device is arranged at the bottom ends of the telescopic rods;
the environment acquisition device comprises: the first motor device is provided with the bottom end of the telescopic rod, a first sensor group is arranged at the bottom end of a rotating shaft of the first motor device, a connecting rod is arranged on the side wall of the rotating shaft of the first motor device, and a second sensor group is arranged at the bottom end of the connecting rod;
the first sensor group is used for collecting the peripheral environmental data of the host computer, and the second sensor group is used for collecting the peripheral environmental data of the computer console.
Further, be equipped with the vertical pole in the mounting groove, the cover is equipped with a plurality of first sleeves on the vertical pole, every be connected with on the first sleeve the horizontal pole, the cover is equipped with a plurality of second sleeves on the horizontal pole, every be connected with on the second sleeve the telescopic link.
Furthermore, a magnetic groove and a sliding groove are respectively arranged on the opposite longitudinal side walls in the mounting groove;
the first sleeve is connected with an electromagnetic block, and the electromagnetic block slides in the magnetic groove and is in magnetic adaptive connection with the magnetic groove;
the free end of the cross rod is provided with a sliding block, and the sliding block is arranged in the sliding groove in a sliding mode in a matching mode.
Furthermore, the cross rod is a cavity cross rod, and a movable opening is formed in the cross rod;
a limiting rod is arranged in the cross rod, the top of the limiting rod is matched with the movable port, and the bottom of the limiting rod is connected with the inner bottom of the cross rod through a plurality of springs; and lifting structures are arranged at two ends of the limiting rod.
Further, the lifting structure includes: the extension rods are arranged at two ends of the limiting rod;
the bottom of the first sleeve and the bottom of the sliding block are both provided with an L-shaped connecting rod, a junction of a cross rod and a vertical rod of the L-shaped connecting rod is connected with a steering pulley, the bottom of the cross rod of the L-shaped connecting rod is rotatably connected with a rotating shaft of a second motor device, and the second motor device is slidably arranged in a groove on the inner side wall of the machine room;
and the free end of the pull rope is connected with a rotating shaft of the second motor device through the steering pulley.
Furthermore, a first electric push rod is arranged at the top in the machine room, and the rod part of the first electric push rod is connected to the top surface of the mounting groove;
the bottom of the second sleeve is connected with a second electric push rod, and the rod part of the second electric push rod is connected with a telescopic rod.
Furthermore, the bottom end of a rotating shaft of the first motor device is rotatably arranged on the top surface of the rotary table, the middle part of the bottom surface of the rotary table is connected with a first sensor group, and an annular inserting plate is arranged around the edge of the bottom surface of the rotary table;
the computer console includes: the device comprises a host cavity, a baffle plate and a power supply, wherein the host cavity is internally provided with the baffle plate, and a space between the host cavity and the baffle plate is an environment acquisition space; a through hole and an annular slot are formed in the top plate of the host cavity;
the annular inserting plate is connected with the annular slot in an adaptive mode.
Furthermore, a vent hole is formed in the main machine cavity;
still be equipped with the fan in the computer lab, the output and the first intercommunication of violently managing of fan, the first intercommunication of violently managing has the standpipe, the intercommunication has a plurality of seconds to violently manage on the standpipe, first violently manage with the second is violently managed and is all equipped with a plurality of outlet ducts, the outlet duct spiro union has the hose, the free end of hose passes through the air vent with the space intercommunication is gathered to the environment.
Furthermore, the monitoring alarm system is electrically connected with a first power supply, and the host is electrically connected with a second power supply.
The embodiment of the invention also provides an automatic machine room on-duty alarm method, which comprises the following steps:
adjusting the position of the cross rod and the position of the telescopic rod on the cross rod to enable each computer operating platform to correspond to one acquisition device;
adjusting the length of the telescopic rod to enable a first sensor group in the acquisition device to acquire environmental data on the periphery of the host computer and a second sensor group in the acquisition device to acquire environmental data on the periphery of the computer operating platform;
and when the peripheral environmental data of the host and/or the peripheral environmental data of the computer console are larger than the preset environmental value, an alarm signal is sent out through the alarm device.
The embodiment of the invention provides an automatic machine room on-duty alarm system and an alarm method, and compared with the prior art, the automatic machine room on-duty alarm system has the following beneficial effects:
according to the invention, the position of the cross rod and the position of the telescopic rod on the cross rod are adjusted, so that one acquisition device corresponds to the upper part of each computer operation platform, and the abnormal conditions of the surrounding environment of a single computer device in a machine room can be acquired in time, thereby avoiding dangerous accidents; meanwhile, the acquisition device can acquire the peripheral environmental data of the host and the peripheral environmental data of the computer console, so that the acquired peripheral environmental data of the single computer device is more accurate and reliable, and the data is comprehensive and has practical application value.
Drawings
Fig. 1 is a schematic structural diagram of an automatic machine room on-duty alarm system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a mounting groove structure provided in an embodiment of the present invention;
FIG. 3 is a schematic view of a cross bar connection structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a venting structure provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a computer console according to an embodiment of the present invention
FIG. 6 is a schematic diagram of an electrical connection relationship of an on-duty alarm system of an automated machine room according to an embodiment of the present invention;
fig. 7 is a flowchart of an automated machine room on-duty alarm method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 6, an embodiment of the present invention provides an automatic machine room on-duty alarm system, including: and the monitoring alarm system is electrically connected with a monitoring center through a communication module, and the monitoring center is electrically connected with an alarm device 8. Monitoring alarm system includes: locate the mounting groove 2 at top in the computer lab 1, the vertical activity is equipped with a plurality of horizontal poles 22 in the mounting groove 2, and every horizontal pole 22 goes up the activity and is equipped with a plurality of telescopic links, and the telescopic link bottom is equipped with collection system 4.
The environment collection device 4 includes: the device comprises a first motor device 41 provided with a telescopic rod bottom end, a first sensor group 43 is arranged at the bottom end of a rotating shaft of the first motor device 41, a connecting rod 44 is arranged on the side wall of the rotating shaft of the first motor device 41, and a second sensor group 45 is arranged at the bottom end of the connecting rod 44; the first sensor group 43 is used for collecting the environment data of the periphery of the host computer, and the second sensor group 45 is used for collecting the environment data of the periphery of the computer console 5. Wherein the first sensor group 43 and the second sensor group 45 each include: temperature sensors, humidity sensors, smoke sensors, etc.
Specifically, a longitudinal rod 21 is arranged in the mounting groove 2, a plurality of first sleeves 22-1 are sleeved on the longitudinal rod 21, a cross rod 22 is connected to each first sleeve 22-1, a plurality of second sleeves 22-2 are sleeved on each cross rod 22, and a telescopic rod is connected to each second sleeve 22-2.
In the embodiment of the invention, the opposite longitudinal side walls in the mounting groove 2 are respectively provided with a magnetic groove and a sliding groove; the first sleeve 22-1 is connected with an electromagnetic block 22-11, and the electromagnetic block 22-11 slides in the magnetic groove and is in magnetic adaptive connection with the magnetic groove; the free end of the cross rod 22 is provided with a slide block 22-3, and the slide block 22-3 is arranged in the slide groove in a sliding mode in a matching mode. The electromagnetic blocks 22-11 slide in the magnetic grooves and are in magnetic adaptive connection with the magnetic grooves, so as to realize the movable state and the fixed state of the cross bar 22; the sliding block 22-3 is slidably disposed in the sliding groove to ensure the smooth movement of the cross bar 22.
In order to realize the movable state and the fixed state of the second sleeve 22-2, the specific structure comprises: the cross bar 22 is a cavity cross bar, and a movable opening is formed in the cross bar 22; a limiting rod 23 is arranged in the cross rod 22, the top of the limiting rod 23 is matched with the movable opening, and the bottom of the limiting rod 23 is connected with the inner bottom of the cross rod 22 through a plurality of springs 23-1; both ends of the limiting rod 23 are provided with lifting structures.
Above-mentioned elevation structure includes: extension rods 23-2 at two ends of the limiting rod 23; the bottoms of the first sleeve 22-1 and the sliding block 22-3 are respectively provided with an L-shaped connecting rod 24, the junction of a cross rod and a vertical rod of the L-shaped connecting rod 24 is connected with a steering pulley 25, the bottom of the cross rod of the L-shaped connecting rod 24 is rotatably connected with a rotating shaft of a second motor device 26, and the second motor device 26 is slidably arranged in a groove on the inner side wall of the machine room 1; a pull rope wound on the extension rod 23-2, the free end of the pull rope is connected with the rotating shaft of the second motor device 26 through a diverting pulley 25.
In order to facilitate the position of adjusting the cross rod and the position of the telescopic rod on the cross rod, a first electric push rod 9 is arranged at the top in the machine room 1, and the rod part of the first electric push rod 9 is connected to the top surface of the mounting groove 2.
In order to adjust the length of the telescopic rod, the bottom of the second sleeve 22-2 is connected with a second electric push rod 3, and the rod part of the second electric push rod 3 is connected with the telescopic rod.
In order to fixedly collect the environmental data by the first sensor group 43 and the second sensor group 45, the bottom end of the rotating shaft of the first motor device 41 is rotatably arranged on the top surface of the turntable 42, the first sensor group 43 is connected to the middle part of the bottom surface of the turntable 42, and an annular inserting plate is arranged around the edge of the bottom surface of the turntable 42; the computer console 5 includes: a main machine cavity 52, wherein a baffle plate 52-1 is arranged in the main machine cavity 52, and the space between the main machine cavity 52 and the baffle plate 52-1 is an environment acquisition space; a through hole 53 and an annular slot 54 are formed on the top plate of the host cavity 52; the annular insert plate is connected with the annular slot 54 in a matching way.
In order to flexibly and effectively adjust the environment around the single computer device, the main machine cavity 52 is provided with a vent hole 55; still be equipped with fan 61 in the computer lab 1, fan 61's output and first violently pipe 62 intercommunication, the intercommunication has standpipe 63 on the first violently pipe 62, and the intercommunication has a plurality of second to violently manage on the standpipe 63, and first violently pipe 62 and second are violently managed and are all equipped with a plurality of outlet ducts 64, and outlet duct 64 spiro union has hose 65, and air vent 55 and environment collection space intercommunication are passed through to the free end of hose 65. In practical application, the vertical tube 63 is provided with a plurality of electromagnetic valves for controlling the second horizontal tube to ventilate.
For real-time and interference-free environmental data monitoring, the monitoring alarm system is electrically connected with a first power supply 71, and the host computer is electrically connected with a second power supply 72.
The electric connection relation of the automatic on-duty alarm system of the machine room provided by the embodiment of the invention is shown in fig. 6, wherein an electromagnetic control switch is used for controlling the magnetic adaptive connection state (movable state and fixed state) of the electromagnetic blocks 22-11 and the magnetic slot; and the alarm judgment module is used for judging that when the peripheral environmental data of the host and/or the peripheral environmental data of the computer operating platform are/is greater than a preset environmental value, controlling the alarm device 8 (which can adopt an audible and visual alarm) to send out an alarm signal.
Referring to fig. 7 in combination with fig. 1 to 6, an embodiment of the present invention provides an automatic machine room on-duty alarm method, including:
and step S1, adjusting the position of the cross bar and the position of the telescopic rod on the cross bar to enable each computer operating platform to correspond to one acquisition device.
And step S2, adjusting the length of the telescopic rod to enable a first sensor group in the acquisition device to acquire the peripheral environmental data of the host and a second sensor group in the acquisition device to acquire the peripheral environmental data of the computer console.
And step S3, when the environment data of the periphery of the host computer and/or the environment data of the periphery of the computer console are larger than the preset environment value, an alarm signal is sent out through an alarm device.
It should be noted that, based on the same inventive concept, the implementation of the method can refer to the implementation of the system, and repeated details are not repeated.
Although the embodiments of the present invention have been disclosed in the form of several specific embodiments, and various modifications and alterations can be made therein by those skilled in the art without departing from the spirit and scope of the invention, the embodiments of the present invention are not limited thereto, and any changes that can be made by those skilled in the art are intended to fall within the scope of the invention.
Claims (10)
1. The utility model provides an automatic change computer lab alarm system on duty which characterized in that includes: the monitoring and alarming system is electrically connected with a monitoring center through a communication module, and the monitoring center is electrically connected with an alarming device (8);
the monitoring alarm system comprises: the device comprises a mounting groove (2) arranged at the top in a machine room (1), a plurality of cross rods (22) are longitudinally and movably arranged in the mounting groove (2), a plurality of telescopic rods are movably arranged on each cross rod (22), and a collecting device (4) is arranged at the bottom ends of the telescopic rods;
the environment acquisition device (4) comprises: the telescopic rod is provided with a first motor device (41) at the bottom end of the telescopic rod, a first sensor group (43) is arranged at the bottom end of a rotating shaft of the first motor device (41), a connecting rod (44) is arranged on the side wall of the rotating shaft of the first motor device (41), and a second sensor group (45) is arranged at the bottom end of the connecting rod (44);
the first sensor group (43) is used for collecting environment data on the periphery of the host computer, and the second sensor group (45) is used for collecting environment data on the periphery of the computer operating table (5).
2. The automatic machine room on-duty alarm system of claim 1, wherein a longitudinal bar (21) is arranged in the mounting groove (2), a plurality of first sleeves (22-1) are sleeved on the longitudinal bar (21), the cross bar (22) is connected to each first sleeve (22-1), a plurality of second sleeves (22-2) are sleeved on the cross bar (22), and the telescopic rod is connected to each second sleeve (22-2).
3. The automatic machine room on-duty alarm system of claim 2, wherein the opposite longitudinal side walls in the mounting groove (2) are respectively provided with a magnetic groove and a sliding groove;
an electromagnetic block (22-11) is connected to the first sleeve (22-1), and the electromagnetic block (22-11) slides in the magnetic groove and is in magnetic adaptive connection with the magnetic groove;
the free end of the cross rod (22) is provided with a sliding block (22-3), and the sliding block (22-3) is arranged in the sliding groove in a sliding mode in a matching mode.
4. The automatic machine room on-duty alarm system of claim 3, wherein the cross bar (22) is a hollow cross bar, and the cross bar (22) is provided with a movable port;
a limiting rod (23) is arranged in the cross rod (22), the top of the limiting rod (23) is matched with the movable opening, and the bottom of the limiting rod (23) is connected with the inner bottom of the cross rod (22) through a plurality of springs (23-1); and lifting structures are arranged at two ends of the limiting rod (23).
5. The automated machine room on-duty alarm system of claim 4, wherein the lifting structure comprises: extension rods (23-2) arranged at two ends of the limiting rod (23);
the bottom of each of the first sleeve (22-1) and the sliding block (22-3) is provided with an L-shaped connecting rod (24), a junction of a cross rod and a vertical rod of the L-shaped connecting rod (24) is connected with a steering pulley (25), the bottom of the cross rod of the L-shaped connecting rod (24) is rotatably connected with a rotating shaft of a second motor device (26), and the second motor device (26) is slidably arranged in a groove on the inner side wall of the machine room (1);
and the free end of the pull rope is connected with a rotating shaft of a second motor device (26) through the steering pulley (25).
6. The automatic machine room on-duty alarm system of claim 2, wherein a first electric push rod (9) is arranged at the top inside the machine room (1), and a rod part of the first electric push rod (9) is connected to the top surface of the mounting groove (2);
the bottom of the second sleeve (22-2) is connected with a second electric push rod (3), and the rod part of the second electric push rod (3) is connected with a telescopic rod.
7. The automatic machine room on-duty alarm system of claim 1, wherein the bottom end of the rotating shaft of the first motor device (41) is rotatably disposed on the top surface of the rotating disc (42), the middle of the bottom surface of the rotating disc (42) is connected with a first sensor group (43), and an annular insertion plate is surrounded on the edge of the bottom surface of the rotating disc (42);
the computer console (5) comprises: the device comprises a main machine cavity (52), wherein a baffle (52-1) is arranged in the main machine cavity (52), and a space between the main machine cavity (52) and the baffle (52-1) is an environment acquisition space; a through hole (53) and an annular slot (54) are formed in the top plate of the host cavity (52);
the annular inserting plate is connected with the annular inserting groove (54) in a matching mode.
8. The automatic machine room on-duty alarm system of claim 7, wherein the main machine cavity (52) is provided with a vent hole (55);
still be equipped with fan (61) in computer lab (1), the output and the first violently pipe (62) intercommunication of fan (61), the intercommunication has standpipe (63) on first violently pipe (62), the intercommunication has a plurality of seconds to violently manage on standpipe (63), first violently pipe (62) with the second is violently managed and is all equipped with a plurality of outlet ducts (64), outlet duct (64) spiro union has hose (65), the free end of hose (65) passes through air vent (55) with the space intercommunication is gathered to the environment.
9. The automated machine room on-duty alarm system of claim 1, wherein the monitoring alarm system is electrically connected to a first power source (71) and the host machine is electrically connected to a second power source (72).
10. An automatic machine room on-duty alarm method is characterized by comprising the following steps:
adjusting the position of the cross rod and the position of the telescopic rod on the cross rod to enable each computer operating platform to correspond to one acquisition device;
adjusting the length of the telescopic rod to enable a first sensor group in the acquisition device to acquire environmental data on the periphery of the host computer and a second sensor group in the acquisition device to acquire environmental data on the periphery of the computer operating platform;
and when the peripheral environmental data of the host and/or the peripheral environmental data of the computer console are larger than the preset environmental value, an alarm signal is sent out through the alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011051096.6A CN112185075A (en) | 2020-09-29 | 2020-09-29 | Automatic machine room on-duty alarm system and alarm method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011051096.6A CN112185075A (en) | 2020-09-29 | 2020-09-29 | Automatic machine room on-duty alarm system and alarm method |
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| CN112185075A true CN112185075A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011051096.6A Pending CN112185075A (en) | 2020-09-29 | 2020-09-29 | Automatic machine room on-duty alarm system and alarm method |
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| US6628338B1 (en) * | 1998-07-08 | 2003-09-30 | Elbex Video Ltd. | Direct drive electric motor apparatus incorporating slip ring assembly |
| CN203595535U (en) * | 2013-11-07 | 2014-05-14 | 浪潮(北京)电子信息产业有限公司 | Monitoring system of machine room service device environmental parameters |
| CN207378948U (en) * | 2017-10-09 | 2018-05-18 | 梁晶 | Computer room environment adjuster |
| CN208126604U (en) * | 2018-05-18 | 2018-11-20 | 天津市沃科尔科技有限公司 | A kind of integrated campus safety device |
| CN208207585U (en) * | 2018-04-20 | 2018-12-07 | 浙江海天信息工程有限公司 | A kind of computer equipment monitoring management system |
| CN209130474U (en) * | 2018-12-10 | 2019-07-19 | 窦万里 | A kind of computer room O&M monitoring device |
| CN210223012U (en) * | 2019-09-20 | 2020-03-31 | 浙江宝顺电气有限公司 | Alarm device of power distribution cabinet |
| CN210707204U (en) * | 2019-08-05 | 2020-06-09 | 华晨兴达特种车辆(大连)有限公司 | Novel alarm equipment for dangerous goods transport vehicle |
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2020
- 2020-09-29 CN CN202011051096.6A patent/CN112185075A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6628338B1 (en) * | 1998-07-08 | 2003-09-30 | Elbex Video Ltd. | Direct drive electric motor apparatus incorporating slip ring assembly |
| CN203595535U (en) * | 2013-11-07 | 2014-05-14 | 浪潮(北京)电子信息产业有限公司 | Monitoring system of machine room service device environmental parameters |
| CN207378948U (en) * | 2017-10-09 | 2018-05-18 | 梁晶 | Computer room environment adjuster |
| CN208207585U (en) * | 2018-04-20 | 2018-12-07 | 浙江海天信息工程有限公司 | A kind of computer equipment monitoring management system |
| CN208126604U (en) * | 2018-05-18 | 2018-11-20 | 天津市沃科尔科技有限公司 | A kind of integrated campus safety device |
| CN209130474U (en) * | 2018-12-10 | 2019-07-19 | 窦万里 | A kind of computer room O&M monitoring device |
| CN210707204U (en) * | 2019-08-05 | 2020-06-09 | 华晨兴达特种车辆(大连)有限公司 | Novel alarm equipment for dangerous goods transport vehicle |
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Application publication date: 20210105 |