CN109190747B - Pedestrian flow statistical method in complex equipment coal mine system channel - Google Patents
Pedestrian flow statistical method in complex equipment coal mine system channel Download PDFInfo
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- CN109190747B CN109190747B CN201810795347.8A CN201810795347A CN109190747B CN 109190747 B CN109190747 B CN 109190747B CN 201810795347 A CN201810795347 A CN 201810795347A CN 109190747 B CN109190747 B CN 109190747B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M1/00—Design features of general application
- G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
- G06M1/274—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum using magnetic means; using Hall-effect devices
Abstract
The invention provides a people flow statistical method in a complex equipment coal mine system channel, which comprises the following steps: arranging a first monitoring point, a second monitoring point and a third monitoring point; and comparing the number of the human bodies obtained by the three times of human body identification, judging whether the results are consistent, and calling each monitoring point video for manual identification. The people flow statistics of the invention adopts the steps of three times of statistics and one time of verification, thus ensuring the accuracy of people counting.
Description
Technical Field
The invention relates to the field of coal mine system safety.
Background
The channel is the most common traffic channel in the mine of the coal mine, and the existing mine channel usually needs people to walk by oneself, and the walking speed is different for each person, so that the efficiency of passing through the channel is not high, and the channel congestion can be caused even when the number of people is large.
Disclosure of Invention
The invention aims to solve the technical problem of providing a people flow statistical method in a complex equipment coal mine system channel aiming at the problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows: the people flow statistical method in the complex equipment coal mine system channel comprises the following steps:
(1) arranging a first monitoring point at the entrance of the channel;
(2) carrying out first human body identification through a first monitoring point and recording the number of each identified human body;
(3) arranging a second monitoring point in the channel;
(4) carrying out secondary human body identification through a second monitoring point and recording the number of each identified human body;
(5) arranging a third monitoring point at the outlet of the channel;
(6) carrying out human body identification for the third time through a third monitoring point and recording the number of each identified human body;
(7) comparing the number of the human bodies obtained by the three times of human body identification, and judging whether the results are consistent;
(8) comparing results which are inconsistent, and calling each monitoring point video for manual identification;
(9) and if the comparison results are consistent, selecting the consistent results as statistical results, and if the comparison results are inconsistent, selecting the results of manual identification as statistical results.
Furthermore, first monitoring point, second monitoring point and third monitoring point are equipped with different monitoring facilities respectively, and monitoring facilities includes infrared counter, bluetooth counter or WIFI counter.
Further, the method includes the step of providing a magnetic conveyor belt on an upper surface within the channel.
Further, the method includes the step of matching the person entering the passageway with the magnetic conveyor.
Further, the step of distributing the persons to the magnetic conveyor comprises the steps of:
(1) arranging a first electromagnetic device on the magnetic conveyor belt, and providing each person entering the passage with a second electromagnetic device matched with the first electromagnetic device, wherein when the first electromagnetic device and the second electromagnetic device are electrified, the first electromagnetic device and the second electromagnetic device can obtain mutually attracted or mutually repelled magnetic force, and the mutually attracted magnetic force can bear at least 200KG weight;
(2) arranging first signal transceiving devices on the magnetic transmission belt, and providing second signal transceiving devices matched with the first signal transceiving devices for personnel at the entrance of each channel, wherein each second signal transceiving device can only realize code matching and signal mutual transmission with one first signal transceiving device, and one first signal transceiving device can realize code matching and signal mutual transmission with at least one second signal transceiving device;
(3) arranging a first control device and a first power supply device on the magnetic transmission belt, wherein the first power supply device supplies power to a first electromagnetic device and a first signal receiving and transmitting device, and the first control device receives signals of the first signal receiving and transmitting device and controls the power on/off and the electromagnetic direction of the first electromagnetic device;
(4) and a second control device and a second power supply device are arranged for personnel at the entrance of each channel, the second power supply device supplies power to the second electromagnetic device and the second signal transceiver, and the second power supply device receives signals of the second signal transceiver and controls the power on/off and the electromagnetic direction of the second electromagnetic device.
Further, matching the personnel and the magnetic conveyor belt specifically comprises the following steps:
(1) when the position of the first signal transceiver is positioned in the message receiving range of the second signal transceiver, the first signal transceiver and the second signal transceiver successfully match codes and respectively send the code matching success information to the first control device and the second control device;
(2) the first control device and the second control device respectively control the first power supply device and the second power supply device to respectively supply power to the first electromagnetic device and the second electromagnetic device, and control the magnetic poles of the first electromagnetic device and the second electromagnetic device to have opposite directions so as to generate mutually attractive force.
Further, the matching also comprises a step of alarming unmatched personnel, wherein the alarming step is as follows: the first signal transceiver is provided with an alarm device, and when a second signal transceiver which does not belong to the code matching range of the first signal transceiver enters the receiving range of the first signal transceiver, the first signal transceiver triggers the alarm device to give an alarm.
Further, the matching also includes a process of excluding unmatched persons, and the excluding process specifically includes the following steps:
(1) when a second signal transceiver which does not belong to a code matching range of a certain first signal transceiver enters a receiving range of the first signal transceiver, the first signal transceiver and the second signal transceiver perform code matching conflict, and code matching conflict information is respectively sent to a first control device and a second control device;
(2) the first control device and the second control device respectively control the first power supply device and the second power supply device to respectively supply power to the first electromagnetic device and the second electromagnetic device, and control the magnetic poles of the first electromagnetic device and the second electromagnetic device to have the same direction, so that the first electromagnetic device and the second electromagnetic device generate mutual repulsive force, and personnel where the second signal transceiver is located are prevented from approaching the magnetic conveyor belt where the first signal transceiver is located.
Further, the matching also includes a process of blocking unmatched persons from entering the passage, and the blocking process specifically includes the following steps:
(1) a baffle rod is arranged at the inlet of the channel, one end of the baffle rod is connected to the middle part of one side of the inlet, the other end of the baffle rod can rotate around the one end, the maximum rotating angle does not exceed 90 degrees, and when the baffle rod rotates to the maximum rotating angle, the baffle rod is transversely blocked at the middle part of the inlet;
(2) a control motor is arranged at the rotating position of the gear lever, and the control motor is controlled by a first control device to be switched on and off;
(3) when a second signal transceiver which does not belong to a code matching range of a certain first signal transceiver approaches the first signal transceiver infinitely, the first signal transceiver sends a blocking signal to the first control device, the first control device sends a blocking control instruction to the control motor, the first control motor is started, and the control gear lever rotates to the maximum angle to realize blocking.
Further, the matching also comprises a step of releasing control of personnel entering the magnetic conveyor belt, specifically:
(1) a detector is arranged at the magnetic conveyor belt, the detector can detect whether a person enters the magnetic conveyor belt or not, and the detector can send a signal to each second control device through infrared or WIFI;
(2) when the first signal transceiver of a certain magnetic conveyor belt is successfully matched with the second signal transceiver of a certain person, and the detector of the magnetic conveyor belt detects that the person passes through the information, the detector sends a signal to a second control device equipped by the person, and the second control device controls a second power supply device to stop supplying power to a second electromagnetic device.
The invention has the beneficial effects that:
(1) the people flow statistics of the invention adopts the steps of three times of statistics and one time of verification, thereby ensuring the accuracy of people counting, ensuring the consistency of the people in and out of the channels and effectively preventing the accidents caused by leaving the people in the underground.
(2) The magnetic conveyor belt is arranged in the channel, so that people entering and leaving the channel are conveyed at a constant speed by the conveyor belt, and the disorder of the sequence in the channel is prevented.
(3) On the basis of the statistics and the automatic transmission of the people flow, the automatic matching method of the personnel and the conveyor belts is fused, all the personnel are approximately and evenly distributed to each conveyor belt, a code matching mechanism is established between each distributed personnel and the conveyor belts, only the personnel who successfully match the codes can be transmitted by the corresponding conveyor belts, and the personnel who fail to match the codes can be blocked, so that the personnel can be prevented from entering wrong channels, and the smooth underground management is ensured.
Detailed Description
The technical solutions of the present invention are further described in detail below in the form of examples, and it should be noted that the examples are only specific illustrations of the present invention, and are not intended to limit the present invention.
Embodiment 1, a people flow statistical method in a complex equipment coal mine system channel.
The invention can carry out the statistics of the pedestrian flow in the channel of the coal mine system, and is realized by the following steps:
(1) arranging a first monitoring point at the entrance of the channel;
(2) carrying out first human body identification through a first monitoring point and recording the number of each identified human body;
(3) arranging a second monitoring point in the channel;
(4) carrying out secondary human body identification through a second monitoring point and recording the number of each identified human body;
(5) arranging a third monitoring point at the outlet of the channel;
(6) carrying out human body identification for the third time through a third monitoring point and recording the number of each identified human body;
(7) comparing the number of the human bodies obtained by the three times of human body identification, and judging whether the results are consistent;
(8) comparing results which are inconsistent, and calling each monitoring point video for manual identification;
(9) and if the comparison results are consistent, selecting the consistent results as statistical results, and if the comparison results are inconsistent, selecting the results of manual identification as statistical results.
First monitoring point, second monitoring point and third monitoring point are equipped with different monitoring facilities respectively, and monitoring facilities includes infrared counter, bluetooth counter or WIFI counter, if adopt the same sensor, then probably not reach the effect of verifying.
In addition, each monitoring point can also be equipped with human body identification or face identification, prevents the wrong report of the robot when no person exists, but no matter be solitary face identification, still flow statistics, all probably can have the mistake and leak, carry out simultaneously and compare the result through two kinds of modes, then can greatly reduce the probability of mistake and leak, under the condition that takes place the data inconsistency, can in time feed back the warning, carry out artifical the verification through calling the video, guarantee to count rigorously.
Example 2 a magnetic conveyor belt was placed in the tunnel.
The magnetic force conveyer belt mainly used conveys personnel, and corresponding equipment can be dressed at every personnel's waist or shoulder position, and after this wearing equipment was adsorbed to magnetic means on the magnetic force conveyer belt, can convey the other end from the one end of passageway with corresponding personnel through the form of conveyer belt, and the speed of whole process is controlled by conveyer belt or control system, just can not take place the phenomenon of order confusion.
The magnetic transmission belt is usually arranged on the upper surface of the passage and can also be arranged on the lower surface of the passage, and in this case, the wearing equipment can be equipment which is worn on the feet or the legs of a person in a matching way.
The magnetic conveyor belt generally comprises a track, the track is fixedly installed on the upper surface of the channel, an electric drive or other drive moving support is arranged in the track, and the support is fixedly connected with an electromagnetic adsorption device.
Example 3 person and passageAnd (6) distributing.
(1) The first electromagnetic device is arranged on the magnetic force conveying belt, each person entering the passage is provided with the second electromagnetic device matched with the first electromagnetic device, when the first electromagnetic device and the second electromagnetic device are electrified, the mutually attractive or mutually repulsive magnetic force can be obtained, and the mutually attractive magnetic force can bear the weight of 200KG at least, so that the person can be smoothly adsorbed.
First electromagnetic device and second electromagnetic device are the electro-magnet, can produce corresponding magnetic field after the circular telegram, then, when the magnetic pole of first electro-magnet and second electro-magnet is opposite, probably produce mutual appeal, if first electro-magnet and second electro-magnet are attached to on conveyer belt and personnel's wearing equipment respectively this moment, will produce the pulling force towards corresponding conveyer belt to the personnel, adsorb personnel and carry out the conveying on the conveyer belt, and on the contrary, when this personnel and conveyer belt mismatch, can change its magnetic pole through the current direction who changes the electro-magnet, make mutual repulsion, thereby produce repulsive power to the personnel, prevent it to be close to the conveyer belt that he did not assign, thereby make every personnel can accurately walk to its passageway that matches, can not produce the phenomenon of crowding and crowding.
(2) The magnetic transmission belt is provided with first signal transceiving devices, persons at the entrance of each channel are provided with second signal transceiving devices matched with the first signal transceiving devices, each second signal transceiving device can only realize code matching and signal mutual transmission with one first signal transceiving device, and one first signal transceiving device can realize code matching and signal mutual transmission with at least one second signal transceiving device.
(3) A first control device and a first power supply device are arranged on the magnetic transmission belt, the first power supply device supplies power to the first electromagnetic device and the first signal receiving and transmitting device, and the first control device receives signals of the first signal receiving and transmitting device and controls the power on/off and the electromagnetic direction of the first electromagnetic device.
(4) And a second control device and a second power supply device are arranged for personnel at the entrance of each channel, the second power supply device supplies power to the second electromagnetic device and the second signal transceiver, and the second power supply device receives signals of the second signal transceiver and controls the power on/off and the electromagnetic direction of the second electromagnetic device.
Example 4 matching of personnel and cage.
(1) When the position of the first signal transceiver is located in the receiving range of the second signal transceiver, the first signal transceiver and the second signal transceiver successfully match codes, and the code matching success information is respectively sent to the first control device and the second control device.
(2) The first control device and the second control device respectively control the first power supply device and the second power supply device to respectively supply power to the first electromagnetic device and the second electromagnetic device, and control the magnetic poles of the first electromagnetic device and the second electromagnetic device to have opposite directions so as to generate mutually attractive force.
After the personnel match the sign indicating number successfully, all the first electromagnetic device that matches successfully will produce the power of inter attraction with nearby second electromagnetic device, the prerequisite of course is that, the personnel that match enter into the scope that the cage can detect, for example within 1 meter, promptly, when the personnel that are assigned, when being close to the 1 meter within range of the passageway that matches with it, the first signal transceiver that the conveyer belt in the passageway was located and the second signal transceiver that personnel were located match the sign indicating number successfully to remind corresponding personnel through second signal transceiver, will produce the pulling force to personnel when personnel are close to the passway mouth, drive this personnel to the removal in the passageway, until getting into the passageway, adsorbed by the conveyer belt.
Example 5, mismatched personnel are alerted.
Since it is inevitable that a person moves outside the passageway, there are many uncontrollable situations in reality, for example, a person who is not assigned to the passageway moves into a range where the passageway can be detected, and it is common practice for the person to select a nearby passageway, but this is not in order, and a prompt, i.e., the alarm in this embodiment, needs to be given. The alarming step is as follows: the first signal transceiver is provided with an alarm device, and when a second signal transceiver which does not belong to the code matching range of the first signal transceiver enters the receiving range of the first signal transceiver, the first signal transceiver triggers the alarm device to give an alarm.
Example 6, unmatched persons were excluded.
In reality, uncontrollable situations also include situations where merely sending an alarm is not necessarily effective, which may be due to the noisy environment where the person does not notice the alarm signal, or even if it does, the order is not considered important, i.e. my element, in which case measures other than alarm may be needed, such as the exclusion described in this embodiment, which specifically includes the following steps:
(1) when a second signal transceiver which does not belong to a code matching range of a certain first signal transceiver enters a receiving range of the first signal transceiver, the first signal transceiver and the second signal transceiver collide codes and send code matching collision information to the first control device and the second control device respectively.
The code-matching conflict means that the unmatched second signal transceiver enters the receiving range of the first signal transceiver, namely the first signal transceiver receives the signal sent by the unmatched second signal transceiver, and at the moment, the first signal transceiver generates a code-matching conflict signal and sends a code-matching conflict signal to the second signal transceiver.
(2) The first control device and the second control device respectively control the first power supply device and the second power supply device to respectively supply power to the first electromagnetic device and the second electromagnetic device, and control the magnetic pole directions of the first electromagnetic device and the second electromagnetic device to be the same, so that the first electromagnetic device and the second electromagnetic device generate mutual repulsion force.
Example 7, unmatched persons were blocked.
In some cases, the mere non-contact repulsive force is not sufficient to prevent the action of a non-matching person entering the corresponding channel, and therefore, a further measure, namely blocking as described in the present embodiment, needs to be taken, which specifically includes the following steps:
(1) a baffle rod is arranged at the inlet of the channel, one end of the baffle rod is connected to the middle part of one side of the inlet, the other end of the baffle rod can rotate around the one end, the maximum rotating angle does not exceed 90 degrees, and when the baffle rod rotates to the maximum rotating angle, the baffle rod is transversely blocked at the middle part of the inlet;
(2) a control motor is arranged at the rotating position of the gear lever, and the control motor is controlled by a first control device to be switched on and off;
(3) when a second signal transceiver which does not belong to a code matching range of a certain first signal transceiver approaches infinitely, for example, the second signal transceiver is located at the entrance of the channel, the first signal transceiver sends a blocking signal to the first control device, the first control device sends a blocking control instruction to the control motor, the first control motor is started, and the control gear lever rotates to the maximum angle to realize blocking.
Example 8, the person passing through the passage is given no control.
When the person meeting the matching condition is conveyed to pass through, no action is needed, the person needs to be released, and the person is still in the receiving range of the cage, the first signal transceiver and the second signal transceiver may still have actions, the adsorption action is unnecessary at this time, and trouble may be caused to the person, so that the releasing control as described in this embodiment is needed, and the step of releasing control specifically refers to:
the matching also comprises a step of releasing control of personnel entering the magnetic conveyor belt, specifically comprising the following steps:
(1) a detector is arranged at the magnetic conveyor belt, the detector can detect whether a person enters the magnetic conveyor belt or not, and the detector can send a signal to each second control device through infrared or WIFI;
alternatively, according to the detection result of embodiment 1, when the detection result matches, it indicates that the person has passed through the entrance, the middle and the exit, respectively, and can be released, and at this time, the control of the person can be released.
(2) When the first signal transceiver of a certain magnetic conveyor belt and the second signal transceiver of a certain person successfully match codes, and the detector of the magnetic conveyor belt detects that the person passes through the information, or the people flow count is +1, the detector sends a signal to the second control device equipped by the person, and the second control device controls the second power supply device to stop supplying power to the second electromagnetic device. Once the second electromagnetic device is de-energized, no interaction force is generated with the first electromagnetic device, the person is no longer under control and can exit the passageway, while the first electromagnetic device does not stop functioning, as possibly other persons need to be guided into the passageway and transported.
Claims (6)
1. The method for counting the pedestrian flow in the coal mine system channel with complex equipment is characterized by comprising the following steps of:
(1) arranging a first monitoring point at the entrance of the channel;
(2) carrying out first human body identification through a first monitoring point and recording the number of each identified human body;
(3) arranging a second monitoring point in the channel;
(4) carrying out secondary human body identification through a second monitoring point and recording the number of each identified human body;
(5) arranging a third monitoring point at the outlet of the channel;
(6) carrying out human body identification for the third time through a third monitoring point and recording the number of each identified human body;
(7) comparing the number of the human bodies obtained by the three human body identifications, and judging whether the results are consistent;
(8) comparing results which are inconsistent, and calling each monitoring point video for manual identification;
(9) comparing results are consistent, selecting the consistent result as a statistical result, and selecting the result of manual identification as the statistical result if the compared results are inconsistent;
the first monitoring point, the second monitoring point and the third monitoring point are respectively provided with different monitoring devices, and the monitoring devices comprise infrared counters, Bluetooth counters or WIFI counters;
the method further comprises the step of arranging a magnetic conveyor belt on the upper surface in the channel;
the method also includes the step of distributing the persons entering the passageway with the magnetic conveyor belt;
matching personnel with a magnetic conveyor belt comprises the following steps:
(1) arranging a first electromagnetic device on the magnetic conveyor belt, and providing each person entering the passage with a second electromagnetic device matched with the first electromagnetic device, wherein when the first electromagnetic device and the second electromagnetic device are electrified, the first electromagnetic device and the second electromagnetic device can obtain mutually attracted or mutually repelled magnetic force, and the mutually attracted magnetic force can bear at least 200KG weight;
(2) arranging first signal transceiving devices on the magnetic transmission belt, and providing second signal transceiving devices matched with the first signal transceiving devices for personnel at the entrance of each channel, wherein each second signal transceiving device can only realize code matching and signal mutual transmission with one first signal transceiving device, and one first signal transceiving device can realize code matching and signal mutual transmission with at least one second signal transceiving device;
(3) arranging a first control device and a first power supply device on the magnetic transmission belt, wherein the first power supply device supplies power to the first electromagnetic device and the first signal transceiver device, and the first control device receives signals of the first signal transceiver device and controls the power on/off and the electromagnetic direction of the first electromagnetic device;
(4) and a second control device and a second power supply device are arranged for personnel at the entrance of each channel, the second power supply device supplies power to the second electromagnetic device and the second signal transceiver, and the second power supply device receives signals of the second signal transceiver and controls the power on/off and the electromagnetic direction of the second electromagnetic device.
2. The method for counting the pedestrian flow in the complex equipment coal mine system channel as claimed in claim 1, wherein the matching of the personnel and the magnetic conveyor belt specifically comprises the following steps:
(1) when the position of the first signal transceiver is positioned in the message receiving range of the second signal transceiver, the first signal transceiver and the second signal transceiver successfully match codes and respectively send the code matching success information to the first control device and the second control device;
(2) the first control device and the second control device respectively control the first power supply device and the second power supply device to respectively supply power to the first electromagnetic device and the second electromagnetic device, and control the magnetic poles of the first electromagnetic device and the second electromagnetic device to have opposite directions so as to generate mutually attractive force.
3. The method of people flow statistics in complex equipment coal mine system channels of claim 2, wherein the matching further comprises the step of alarming unmatched people, and the alarming step is: the first signal transceiver is provided with an alarm device, and when a second signal transceiver which does not belong to the code matching range of the first signal transceiver enters the signal receiving range of the first signal transceiver, the first signal transceiver triggers the alarm device to give an alarm.
4. The method of people traffic statistics within a complex equipment coal mine system channel of claim 2, wherein the matching further comprises a process of excluding unmatched people, the excluding process comprising the steps of:
(1) when a second signal transceiver which does not belong to a code matching range of a certain first signal transceiver enters a receiving range of the first signal transceiver, the first signal transceiver and the second signal transceiver collide codes and send code matching collision information to a first control device and a second control device respectively;
(2) the first control device and the second control device respectively control the first power supply device and the second power supply device to respectively supply power to the first electromagnetic device and the second electromagnetic device, and control the magnetic poles of the first electromagnetic device and the second electromagnetic device to have the same direction, so that the first electromagnetic device and the second electromagnetic device generate mutual repulsive force, and personnel where the second signal transceiver is located are prevented from approaching the magnetic conveyor belt where the first signal transceiver is located.
5. The method of people flow statistics in a complex equipment coal mine system passage as claimed in claim 2, wherein said matching further comprises a process of blocking unmatched people from entering the passage, the blocking process specifically comprising the steps of:
(1) a baffle rod is arranged at the inlet of the channel, one end of the baffle rod is connected to the middle part of one side of the inlet, the other end of the baffle rod can rotate around the one end, the maximum rotating angle does not exceed 90 degrees, and when the baffle rod rotates to the maximum rotating angle, the baffle rod is transversely blocked at the middle part of the inlet;
(2) a control motor is arranged at the rotating position of the gear lever, and the control motor is controlled by a first control device to be switched on and off;
(3) when a second signal transceiver which does not belong to a code matching range of a certain first signal transceiver approaches the first signal transceiver infinitely, the first signal transceiver sends a blocking signal to the first control device, the first control device sends a blocking control instruction to the control motor, the control motor is started, and the control gear lever rotates to the maximum angle to realize blocking.
6. The method of people flow statistics in a complex equipment coal mine system passage as claimed in claim 2, wherein said matching further comprises the step of releasing control of personnel entering the magnetic conveyor belt, specifically:
(1) a detector is arranged at the magnetic conveyor belt, the detector can detect whether a person enters the magnetic conveyor belt or not, and the detector can send a signal to each second control device through infrared or WIFI;
(2) when the first signal transceiver of a certain magnetic conveyor belt is successfully matched with the second signal transceiver of a certain person, and the detector of the magnetic conveyor belt detects that the person passes through the information, the detector sends a signal to a second control device equipped by the person, and the second control device controls a second power supply device to stop supplying power to a second electromagnetic device.
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| CN201810494160 | 2018-05-22 | ||
| CN2018104941604 | 2018-05-22 |
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| CN109190747B true CN109190747B (en) | 2022-05-20 |
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| CN107067525A (en) * | 2017-06-12 | 2017-08-18 | 武汉黎赛科技有限责任公司 | A kind of gate control system personnel's counting device and system |
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| US6088111A (en) * | 1997-11-06 | 2000-07-11 | Centro Automation Spa | Selection and control device for bars and relative method |
| JP2008195490A (en) * | 2007-02-13 | 2008-08-28 | Anritsu Sanki System Co Ltd | Conveyor and metering device using the conveyor |
| CN105712026A (en) * | 2008-08-04 | 2016-06-29 | 专业输送设备有限公司 | Buffer Conveyor For Conveying And Buffering Products |
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