CN201472414U - Gravity induction type axle counting equipment - Google Patents
Gravity induction type axle counting equipment Download PDFInfo
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- CN201472414U CN201472414U CN2009203013313U CN200920301331U CN201472414U CN 201472414 U CN201472414 U CN 201472414U CN 2009203013313 U CN2009203013313 U CN 2009203013313U CN 200920301331 U CN200920301331 U CN 200920301331U CN 201472414 U CN201472414 U CN 201472414U
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- 230000006698 induction Effects 0.000 title abstract description 6
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- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 35
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000010365 information processing Effects 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
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- 230000001939 inductive effect Effects 0.000 description 18
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- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- 238000009413 insulation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
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Abstract
A gravity induction type axle counting equipment belongs to the rail traffic management equipment field. The equipment comprises an axle detector disposed on line, an axle counting information processing system disposed in room, an input output sub-system and a power supply; the axle comprises a sensor unit mounted on the waist of the line steel rail and a wheel electronic detector mounted inside the equipment box; the wheel electronic detector comprises an axle counting CPU, a signal processing unit, a sensor power supply unit and a state detection unit; the axle counting information processing system comprises a CPU unit, a communication unit and an I/O unit; the CPU units are interconnected by network interfaces; the communication unit is respectively connected with the wheel electronic detector and an external data equipment; the communication unit and the I/O unit are respectively connected with the CPU unit; the input output sub-system comprises a dynamic driving composite unit, a relay and a press button. The utility model achieves accurate detection result and high reliability; and can realize the automatic judgement to the idle or occupy state of the track section.
Description
Technical field:
The utility model relates to a kind of railway traffic managerial tools, especially a kind of gravity sensing formula axis-counting device.
Background technology:
The track section status detection promptly is that each section to track detects, and is in seizure condition or is in idle condition thereby differentiate each section.The common equipment of current detection track section state is a track circuit, but because track circuit adopts rail to do circuit path, insulating power are bad, very high to the line insulation requirement, be subjected to the situation of external interference, railway roadbed and rail to influence bigger, when detecting the track section state, there are problems such as shunting badness, " red band ", cause misjudgment phenomenon to occur.Do not have the section track check implement at semi-automatic block system, the complete arrival of train has hindered the further raising of railway transport capacity entirely with artificial affirmation.Therefore, mainly be to adopt induction axis-counting device to solve problems such as track circuit shunting badness, " red band " at present, it is to utilize the signal of electromagnetic type magnetic head induction train wheel process to judge the axis-counting device whether track section has car to take.But in actual applications, the vibration of electromagnetic type magnetic head meeting invar rail, vehicle wheel are to factor affecting such as variation and electromagnetic interference, particularly be subjected to the influence of non-wheel shaft metal objects such as spade and gyrocar bigger, tend to cause the track circuit erroneous judgement, can not effectively solve problems such as track circuit shunting badness, " red band ".
The utility model content:
The technical problems to be solved in the utility model is: a kind of gravity sensing formula axis-counting device is provided, and this gravity sensing formula axis-counting device is to adopt the gravity-feed tank inductive transducer as the wheel axle count sensor, realizes the safety detection to the track section state.It can the invar rail vibration, vehicle wheel rim variation in thickness and output is exerted an influence, its antijamming capability is strong, is not subjected to the influence of non-wheel shaft metal object, can effectively solve the erroneous judgement problem that factors such as track circuit shunting badness, " red band " are brought.
The technical scheme that solves the problems of the technologies described above is: a kind of gravity sensing formula axis-counting device, comprise the axletree detector that is positioned on the circuit, be positioned at indoor axle information disposal system, IOS and power supply, described axletree detector is mainly by the sensor unit that is installed on the circuit rail waist, the wheel electronic detectors that are installed in the equipment box are formed, wherein, the gravity sensing formula sensor unit that each sensor unit is made up of 3～7 gravity sensing formula sensors, the wheel electronic detectors are mainly by meter axle CPU element, signal processing unit, sensor electrical source unit and state detection unit are formed, the mouth of sensor electrical source unit is connected with the input end of sensor unit, the mouth of sensor unit is connected with the input end of signal processing unit, and the mouth of signal processing unit is connected with the input end of meter axle CPU element respectively with the mouth of state detection unit; Described axle information disposal system mainly is made up of CPU element, communication unit and I/O unit, CPU element has network interface and interconnects by this network interface, communication unit has the CAN data-interface and interconnects, has the data serial ports with the meter axle CPU element of wheel electronic detectors and links to each other with exterior data equipment, and this communication unit is connected with CPU element respectively with the I/O unit; Described IOS comprises dynamic driving assembled unit, relay and button, the input end of relay is connected with the mouth of the I/O unit of axle information disposal system by the dynamic driving assembled unit, and the mouth of relay and button is connected with the input end of the I/O unit of axle information disposal system.
Further technical scheme of the present utility model is: described gravity sensing formula axis-counting device also comprises axle information disposal system and the axletree detector data communication subsystem that lays respectively on indoor and the circuit, this subsystem includes passage lightning protection unit and transmission line, and described passage lightning protection unit is connected with the communication unit of axle information disposal system, the meter axle CPU element of axletree detector respectively by transmission line; Described transmission line adopts the normal signal cable, adopts CAN bus communication mode, and the shared core assembly line of a plurality of equipment.
Adopt the gravity sensing formula axis-counting device of the utility model to be to the basic detection principle that the track section state detects:
The mechanics principle that elastic stress changes can take place down in the wheel gravity loading in this according to rail, and this STRESS VARIATION of gravity sensing formula sensor senses is installed in rail, produces and the corresponding signal value of STRESS VARIATION.
For ease of discussing, two one section rail AB that rolls between the pillow can be treated as one section freely-supported Beam, 2 of A, B install gravity-feed tank inductive transducer a and gravity-feed tank inductive transducer b (as shown in Figure 9) respectively.
When wheel operates in A, B point-to-point transmission, learn that according to mechanics principle the shearing Q of 2 of A, B and the relation between the travelling load P have:
In the following formula, l is the distance between A point and the B point, and x is the distance of ordering to A in the wheel axis;
The signal value and the relation between the travelling load P of gravity-feed tank inductive transducer a and gravity-feed tank inductive transducer b induction have (k is a constant factor):
Two signal values are carried out the subtraction overlap-add procedure, and the signal value difference of gravity-feed tank inductive transducer a, b induction and the relation between the travelling load P have:
U
ab＝U
a-U
b＝kP
When wheel process AB section, the signal that gravity-feed tank inductive transducer a, b sense is a square-wave pulse signal relevant with gravity after the subtraction overlap-add procedure in theory.
According to above conclusion, choose place's sleeper neutral gear in meter axle section termination, three gravity-feed tank inductive transducers are installed in the middle of the rail web of the rail at neutral gear place, and when wheel moves between 1#, 2#, 3# sensor (as shown in figure 10), its signal value of sensing is U behind subtraction overlap-add procedure signal
12And U
23In actual applications wheel travelling load and 1#, 2#, 3# sensor sensing to the functional relation of signal value difference is arranged, so U
12And U
23Be not square-wave pulse signal, its waveform is the impulse singla (as shown in figure 11) that distortion is arranged.By the pulse number of detection computations, realize calculated column axletree number by check point; According to the priority that two pulses occur, differentiate current of traffic; Width according to pulse can calculate train running speed; Can calculate the weight of train according to pulse amplitude.
Because adopt technique scheme, the gravity sensing formula axis-counting device of the utility model has following beneficial effect:
1, testing result is accurate:
Because the gravity sensing formula axle counting system of the utility model is to adopt the gravity-feed tank inductive transducer to replace traditional electromagnetic type magnetic head to respond to the signal of train wheel, by design to gravity inductosyn initial conditions, it generally to be had more than or equal to the heavy wheel of 600～1000kg could produce the pulse of a meter axle by the sensor district, be subjected to rail vibration, vehicle wheel easily to changing and the influence of factor such as electromagnetic interference unlike the axis-counting device that adopts the electromagnetic type magnetic head, particularly be subjected to the influence of non-wheel shaft metal object such as spade and gyrocar; And because the good insulation preformance of gravity-feed tank inductive transducer, less demanding to line insulation, have train by the advantage that speed range is wide, working temperature range is wide, can effectively solve the erroneous judgement problem that factors such as track circuit shunting badness, " red band " are brought.
2, reliability height:
Because the gravity sensing formula axis-counting device of the utility model adopts the volume of gravity-feed tank inductive transducer less, and this sensor is installed in rail web of the rail place, and therefore exposed parts are not easy to be subjected to foreign object and collide and be damaged; And the unfailing performance of this gravity-feed tank inductive transducer is fine, and the mean free error time surpasses more than 5 years.
3, equipment has stronger antijamming capability:
Because the axle information disposal system of the gravity sensing formula axis-counting device of the utility model and the transmission line of axletree detector data communication subsystem adopt the normal signal cable, adopt CAN bus communication mode, (CAN is the abbreviation of Controller AreaNetwork owing to CAN, the meaning is the Local Area Network controller) bus is a kind of advanced person's field bus technique, be widely used in modern industry control field, its signal transmission medium is a twisted-pair feeder, traffic rate reaches as high as 1Mbps (the longest 40m of being of communication distance this moment), directly transmission distance can reach 10km (speed is below 5kbps) farthest, but locking equipment can reach 110 at most.And because short frame structure is adopted in the transmission of the signal of CAN, the effective word joint number of each frame is 8, thereby the transmission time is short, and the probability that is disturbed is lower; When node gross error, the function that also has SELF CL to be to cut off getting in touch of this node and bus, makes other node on the bus and communicates by letter unaffectedly, has stronger antijamming capability.And CAN supports multiple mode to work, and any node all can initiatively send information to other nodes at any time on the network, supports point-to-point, any is to multiple spot and overall broadcast mode reception/transmission data.It adopts the bus arbitration technology, and when occurring several nodes simultaneously in transmission over networks information, the node that priority level is high can continue to transmit data, and the node that priority is low then initiatively stops to send, thereby has avoided bus collision.Therefore, these characteristics of CAN bus are fit to the gravity sensing formula axis-counting device of the utility model very much, can make full use of the existing communication cable, can the shared a pair of communication cable of many complete equipments, the fault of one place's axle-counting points, can not have influence on the normal operation of other axle-counting points, so the gravity sensing formula axis-counting device of the utility model has stronger antijamming capability.
Below, the technical characterictic to the gravity sensing formula axis-counting device of the utility model is further described in conjunction with the accompanying drawings and embodiments.
Description of drawings:
The structured flowchart of gravity sensing formula axis-counting device in the station of Fig. 1: embodiment one described the utility model;
Fig. 2: the work schematic block diagram of axletree detector;
The work schematic block diagram of Fig. 3: embodiment one described axle information disposal system;
The structured flowchart of gravity sensing formula axis-counting device between the station of Fig. 4: embodiment two described the utility model;
The work schematic block diagram of Fig. 5: embodiment two described axle information disposal systems;
Fig. 6: the mechanical model figure of gravity-feed tank inductive transducer;
Fig. 7: wheel is by the scheme drawing of gravity-feed tank inductive transducer;
Fig. 8: the composite output signal scheme drawing of gravity-feed tank inductive transducer;
Among the figure, I, axletree detector, II, axle information disposal system,
III, IOS, IV, interior communication transmission subsystem.
The specific embodiment:
Embodiment one: gravity sensing formula axis-counting device in standing
Gravity sensing formula axis-counting device (as shown in Figure 1) in a kind of station comprises the axletree detector I that is positioned on the circuit, is positioned at indoor a cover axle information disposal system II, a cover IOS III, lays respectively at axle information disposal system on indoor and the circuit and axletree detector data communication subsystem and power supply, the power lightning protection unit; Described axletree detector I by be installed in the sensor unit on the single edge of circuit rail waist, the wheel electronic detectors that are installed in the equipment box are formed, wherein, each axle-counting points is provided with a sensor unit, the gravity sensing formula sensor unit that each sensor unit all is made up of 1#, 2#, 3# gravity sensing formula sensor; Described wheel electronic detectors adopt the mode of operation of two-shipper parallel connection, these wheel electronic detectors are made up of meter axle CPU element, signal processing unit, sensor electrical source unit and state detection unit, the mouth of sensor electrical source unit is connected with the input end of sensor unit, the mouth of sensor unit is connected with the input end of signal processing unit, and the mouth of signal processing unit is connected (as shown in Figure 2) with the input end of meter axle CPU element respectively with the mouth of state detection unit; Described axle information disposal system II is made up of CPU element, communication unit and I/O unit, CPU element has network interface and interconnects by this network interface, communication unit has the CAN data-interface and interconnects, has the data serial ports with the meter axle CPU element of wheel electronic detectors and links to each other with exterior data equipment, and this communication unit is connected (as shown in Figure 3) respectively with the I/O unit with CPU element; Described IOS III is by dynamic driving assembled unit, relay and button, the input end of relay is connected with the mouth of the I/O unit of axle information disposal system by the dynamic driving assembled unit, and the mouth of relay and button is connected with the input end of the I/O unit of axle information disposal system.Described axle information disposal system and axletree detector data communication subsystem are made up of passage lightning protection unit and transmission line, and this passage lightning protection unit interconnects the communication unit of axle information disposal system and the meter axle CPU element of axletree detector respectively by transmission line.
The transmission line of described axle information disposal system and axletree detector data communication subsystem adopts the normal signal cable, adopts CAN bus communication mode, and the shared core assembly line of a plurality of equipment.
The function that above-mentioned each major part is mainly realized is as follows:
One, the axletree detector is mainly realized following function:
(1), when the weight P of wheel more than or equal to (600～1000) kg, during train speed V=(0～300) km/h, the pulse that the gravity-feed tank inductive transducer is produced all can reliably be counted;
(2), can differentiate the travelled by vehicle direction, the axletree that moves forward and backward on same gravity-feed tank inductive transducer should be able to correctly be counted;
(3), whether timed sending work state information to axle information disposal system is confirmed working properly;
Automatic return function when (4), having software anomaly.
Two, the axle information disposal system mainly realizes following function:
(1), correctly receives axletree detector signal transmitted;
(2), record count result and the number of axle of relatively sailing into and being write down when rolling section away from, differentiate current of traffic, and the number of axle information and the current of traffic information representation of record come out;
(3), the section that monitors takies or idle expression;
(4), the axletree detector is sent monitored instruction;
(5), the correct function of cycle monitor communication transmission path, axletree detector and power supply situation, any fault all should cause the expression that takies;
(6), carry out state information exchange with adjacent station axle information disposal system.
Three, in the IOS, relay comprises interval orbit relay QGJ and equipment state relay, and this IOS section that to be gravity sensing formula axis-counting device monitored in order to expression takies or the final performance element of idle condition; Button is mainly as the equipment return-to-zero, and when the axis-counting device execution was always clear, QGJ picked up, the expression section cleared; When system outlet 5Hz pulse was made up to dynamic driving, out-put supply was given QGJ, and QGJ picks up, the expression section cleared; When not having the 5Hz pulse to make up to dynamic driving, there is not power supply output, QGJ falls, the expression section occupied.
A kind of conversion as present embodiment one, gravity sensing formula axis-counting device also can not comprise axle information disposal system and axletree detector data communication subsystem in the described station, the communication unit of axle information disposal system meter axle CPU element direct and the wheel electronic detectors interconnect, and just effect is so not good.
Another conversion as present embodiment one, the gravity sensing formula sensor unit that described each sensor unit also can be made up of 4,5,6,7 gravity sensing formula sensors, just not as adopt 3 gravity-feed tank inductive transducers simple in structure, cost is low.
Embodiment two: gravity sensing formula axis-counting device between standing
Gravity sensing formula axis-counting device (as shown in Figure 4) between a kind of station, its basic structure is all with embodiment one, comprise the axletree detector I that is positioned on the circuit, be positioned at indoor axle information disposal system II, IOS III, lay respectively at axle information disposal system and axletree detector data communication subsystem and power supply on indoor and the circuit, the power lightning protection unit, institute's difference is: this system also includes interior communication transmission subsystem IV, IV is mainly by telecommunication unit for this interior communication transmission subsystem, communication lightning protection unit and interior communication transmission line constitute, and miss the stop a communications line and the lightning protection unit of communicating by letter of telecommunication single-pass is connected; The CPU element of described axle information disposal system also has the external data serial ports and links to each other with telecommunication unit by this external data serial ports; Described sensor unit is provided with two at each axle-counting points, these two sensor units are installed in respectively on the rail waist on circuit both sides, and connect wheel electronic detectors jointly, each sensor unit is formed by 3 gravity sensing formula sensors, and the quantity of axle information disposal system, IOS and interior communication transmission subsystem that each station is indoor is a cover.
Its concrete structure is as follows:
Gravity sensing formula axis-counting device between a kind of station, comprise the axletree detector I that is positioned on the circuit, be positioned at indoor axle information disposal system II, IOS III, interior communication transmission subsystem IV, lay respectively at axle information disposal system and axletree detector data communication subsystem and power supply on indoor and the circuit, the power lightning protection unit, described axletree detector I is by sensor unit, the wheel electronic detectors that are installed in the equipment box are formed, wherein, each axle-counting points all is provided with two sensor units, these two sensor units are installed in respectively on the rail waist on circuit both sides, and connect wheel electronic detectors jointly, each sensor unit all is by 1#, 2#, the gravity sensing formula sensor unit that 3# gravity sensing formula sensor is formed, the wheel electronic detectors adopt the mode of operation of two-shipper parallel connection, these wheel electronic detectors are by meter axle CPU element, signal processing unit, sensor electrical source unit and state detection unit are formed, the mouth of sensor electrical source unit is connected with the input end of sensor unit, the mouth of sensor unit is connected with the input end of signal processing unit, and the mouth of signal processing unit is connected (as shown in Figure 2) with the input end of meter axle CPU element respectively with the mouth of state detection unit; Described axle information disposal system II is made up of CPU element, communication unit and I/O unit, CPU element has network interface and interconnects by this network interface, have the external data serial ports and pass through this external data serial ports and link to each other with the telecommunication unit of interior communication transmission subsystem, communication unit has the CAN data-interface and interconnects, has the data serial ports with the meter axle CPU element of wheel electronic detectors and links to each other with exterior data equipment, and this communication unit is connected (as shown in Figure 5) respectively with the I/O unit with CPU element; Described IOS III is by dynamic driving assembled unit, relay and button, the input end of relay is connected with the mouth of the I/O unit of axle information disposal system by the dynamic driving assembled unit, and the mouth of relay and button is connected with the input end of the I/O unit of axle information disposal system.Described axle information disposal system and axletree detector data communication subsystem are made up of passage lightning protection unit and transmission line, and this passage lightning protection unit interconnects the communication unit of axle information disposal system and the meter axle CPU element of axletree detector respectively by transmission line.Described interior communication transmission subsystem IV is made of telecommunication unit, communication lightning protection unit and interior communication transmission line, and telecommunication unit is connected with CPU element, the communication lightning protection unit of axle information disposal system respectively by the interior communication transmission line.
Described interior communication transmission subsystem adopts the real loop line of special line, optical cable special line or dedicated line modem communication, has strengthened especially the recovery that the correction process and the transtaneous communication of serial communication are interrupted is handled.
As a kind of conversion of present embodiment two, described axle information disposal system also can be connected with a plurality of axletree detectors on being positioned at outdoor circuit, so that satisfy the needs of multi-region section supervision.
Another conversion as present embodiment two, taking cost into account, described sensor unit also can be only at circuit one group of sensor unit of installation on the rail waist on the same axis on one side, just not as adopting both sides that the stability and the reliability height of two groups of gravity sensing formula sensor units are installed.
Claims (4)
1. gravity sensing formula axis-counting device, comprise the axletree detector that is positioned on the circuit, be positioned at indoor axle information disposal system, IOS and power supply, it is characterized in that: described axletree detector is mainly by the sensor unit that is installed on the circuit rail waist, the wheel electronic detectors that are installed in the equipment box are formed, wherein, the gravity sensing formula sensor unit that each sensor unit is made up of 3～7 gravity sensing formula sensors, the wheel electronic detectors are mainly by meter axle CPU element, signal processing unit, sensor electrical source unit and state detection unit are formed, the mouth of sensor electrical source unit is connected with the input end of sensor unit, the mouth of sensor unit is connected with the input end of signal processing unit, and the mouth of signal processing unit is connected with the input end of meter axle CPU element respectively with the mouth of state detection unit; Described axle information disposal system mainly is made up of CPU element, communication unit and I/O unit, CPU element has network interface and interconnects by this network interface, communication unit has the CAN data-interface and interconnects, has the data serial ports with the meter axle CPU element of wheel electronic detectors and links to each other with exterior data equipment, and this communication unit is connected with CPU element respectively with the I/O unit; Described IOS comprises dynamic driving assembled unit, relay and button, the input end of relay is connected with the mouth of the I/O unit of axle information disposal system by the dynamic driving assembled unit, and the mouth of relay and button is connected with the input end of the I/O unit of axle information disposal system.
2. gravity sensing formula axis-counting device according to claim 1, it is characterized in that: described gravity sensing formula axis-counting device also comprises axle information disposal system and the axletree detector data communication subsystem that lays respectively on indoor and the circuit, this subsystem includes passage lightning protection unit and transmission line, and described passage lightning protection unit is connected with the communication unit of axle information disposal system, the meter axle CPU element of axletree detector respectively by transmission line; Described transmission line adopts the normal signal cable, adopts CAN bus communication mode, and the shared core assembly line of a plurality of equipment.
3. gravity sensing formula axis-counting device according to claim 1 and 2, it is characterized in that: described gravity sensing formula axis-counting device is gravity sensing formula axis-counting device in the station, the sensor unit of described axletree detector only is installed on the rail waist of single edge of circuit, each axle-counting points is provided with a sensor unit, each sensor unit is formed by 3 gravity sensing formula sensors, and the quantity that is positioned at indoor axle information disposal system, IOS is a cover.
4. gravity sensing formula axis-counting device according to claim 1 and 2, it is characterized in that: described gravity sensing formula axis-counting device is gravity sensing formula axis-counting device between the station, this equipment also includes the interior communication transmission subsystem, this interior communication transmission subsystem mainly is made of telecommunication unit, communication lightning protection unit and interior communication transmission line, and telecommunication unit is connected with the communication lightning protection unit by the interior communication transmission line; The CPU element of described axle information disposal system also has the external data serial ports and links to each other with telecommunication unit by this external data serial ports; Described sensor unit is provided with two at each axle-counting points, these two sensor units are installed in respectively on the rail waist on circuit both sides, and connect wheel electronic detectors jointly, each sensor unit is formed by 3 gravity sensing formula sensors, and the quantity of axle information disposal system, IOS and interior communication transmission subsystem that each station is indoor is a cover.
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|---|---|---|---|
| CN2009203013313U CN201472414U (en) | 2009-03-17 | 2009-03-17 | Gravity induction type axle counting equipment |
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| CN2009203013313U CN201472414U (en) | 2009-03-17 | 2009-03-17 | Gravity induction type axle counting equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712329B (en) * | 2009-03-17 | 2012-05-23 | 南宁铁路局 | Gravity inductive type axis-counting device and method for detecting state of tract district using same |
| CN103085842A (en) * | 2013-01-23 | 2013-05-08 | 成都铁路通信设备有限责任公司 | Detection system and detection method of straddle type light rail movable crossover line track sections |
| CN108072438A (en) * | 2016-11-18 | 2018-05-25 | 浙江海洋大学 | A kind of Automatic Combined meausring apparatus of squid chip |
| CN109720375A (en) * | 2017-10-30 | 2019-05-07 | 比亚迪股份有限公司 | Straddle-type monorail orbit occupancy detection system, method and electronic equipment |
-
2009
- 2009-03-17 CN CN2009203013313U patent/CN201472414U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712329B (en) * | 2009-03-17 | 2012-05-23 | 南宁铁路局 | Gravity inductive type axis-counting device and method for detecting state of tract district using same |
| CN103085842A (en) * | 2013-01-23 | 2013-05-08 | 成都铁路通信设备有限责任公司 | Detection system and detection method of straddle type light rail movable crossover line track sections |
| CN103085842B (en) * | 2013-01-23 | 2015-06-03 | 成都铁路通信设备有限责任公司 | Detection system and detection method of straddle type light rail movable crossover line track sections |
| CN108072438A (en) * | 2016-11-18 | 2018-05-25 | 浙江海洋大学 | A kind of Automatic Combined meausring apparatus of squid chip |
| CN108072438B (en) * | 2016-11-18 | 2020-02-14 | 浙江海洋大学 | Automatic combination weighing device of squid piece |
| CN109720375A (en) * | 2017-10-30 | 2019-05-07 | 比亚迪股份有限公司 | Straddle-type monorail orbit occupancy detection system, method and electronic equipment |
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