CN102865091B - Hydraulic support remote control method and system - Google Patents
Hydraulic support remote control method and system Download PDFInfo
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- CN102865091B CN102865091B CN201210358770.4A CN201210358770A CN102865091B CN 102865091 B CN102865091 B CN 102865091B CN 201210358770 A CN201210358770 A CN 201210358770A CN 102865091 B CN102865091 B CN 102865091B
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Abstract
The invention provides a hydraulic support remote control method and a system. The method comprises the steps as follows: transmitting command information through an emitter; receiving the command information through a receiver which has the same wireless communication frequency as the emitter; decoding the received command information through the receiver, and judging whether the ID number of a controller in the received command information is in the preset ID receiving range, if so, storing the decoded command information, if not, abandoning the command information. With the adoption of the hydraulic support remote control method and the system, the problem of same frequency interference can be effectively avoided; and the operation is convenient and safe.
Description
Technical field
The present invention relates to man-machine interaction field, particularly relate to a kind of hydraulic support remote control and system.
Background technology
At present, the use of remote controller in Coal mine excavation is not also very general.Under mine, the use of remote controller is also be only limitted to single controlled device, and as coal-winning machine, the equipment such as development machine, are rarely used in the remote control of hydraulic support.Carry out the multiple object of short distance remote control simultaneously occasion at needs, the time division multiplexing mode that adopts carries out wheel current control more, and not truly, multiple stage remote controller carries out straighforward operation simultaneously.This remote control mode is not too suitable for the multiple air combat of hydraulic support.Under normal circumstances, when doing hydraulic bracket controller behaviour, must guarantee that controlled support is in safe sight distance.Therefore, as need to multiple stage hydraulic supporting controller grouping remote control, then the distance between adjacent packets be relatively near, in the case, as needed remote control simultaneously, then can only carry out timesharing wheel current control, have a strong impact on operating efficiency.In addition, in use two or multiple stage remote controller and multiple stage receiver corporation remote control mode, every platform receiver is all resolved all control informations received, and does not do selective parsing.
On market, remote controller many employings single channel carries out command information transmission, is carrying out there are three problems in zonal control situation.First, when adjacent transmitter sends command information simultaneously, co-channel interference phenomenon can be there is between the two, when a transmitter job, another transmitter sends if any instruction, then must wait for that channel is released and just can carry out, when there being several operator to operate simultaneously, this interference is more obvious, has a strong impact on normal operating.Second, subregion operation occasion is carried out at needs, usual way just reaches interregional remote control isolation by the radio-frequency power adjusting transmitter, this method is just apart distant at transmitter, respective RF signal strength could realize when can not have influence on the other side's remote control, and under carrying out zonal control situation to hydraulic support, is the safety of guarantee operation, usual transmitter spacing is comparatively near, cannot accomplish being isolated from each other of radiofrequency signal.3rd, though the address including object controller in command information order, unavoidably because operator's carelessness causes transregional operation, interlace operation, cause safety problem.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic support remote control and system, antijamming capability is strong, handling safety.
Object of the present invention is achieved by the following scheme:
A kind of hydraulic support remote control, comprises the steps:
Receiver corresponding for same controlled district and transmitter are set to same wireless telecommunications frequency, and are different wireless telecommunications frequencies by the wireless telecommunications set of frequency in each controlled district;
Send command information by transmitter, wherein, the controller ID that described command information comprises numbers;
The receiver with described transmitter with same wireless communication frequency receives described command information;
Described receiver is decoded to the command information received, and judges that described controller ID numbers whether in the ID range of receiving preset, if so, then preserves decoded command information, if not, then abandon described command information.
A kind of hydraulic support remote control system, comprising:
Controller, for the wireless telecommunications frequency according to the predetermined wireless telecommunications set of frequency receiver in controlled district, arranges the ID range of receiving of receiver according to the ID numbering of the controller of hydraulic support each in controlled district;
Transmitter, comprises the first Transmit Receive Unit and setting unit, and described first Transmit Receive Unit is for sending command information, and described setting unit is used for the wireless telecommunications frequency corresponding according to the wireless telecommunications set of frequency of described receiver;
With described transmitter, there is the receiver of same wireless communication frequency, described receiver comprises the second Transmit Receive Unit, decoding unit, control unit, described second Transmit Receive Unit is used for after receiving described command information, the command information received is transmitted to described decoding unit, described decoding unit is decoded to received command information, whether described control unit numbers in described ID range of receiving for the controller ID judging decoded command information and comprise, if, then preserve decoded command information, if not, then abandon described command information.
According to the scheme of the invention described above, receiver can only receive the command information of the transmitter transmission with it with same wireless communication frequency, then when operator's division operation hydraulic support, only need in advance receiver corresponding for same controlled district and transmitter to be set to same wireless telecommunications frequency, and the wireless telecommunications set of frequency in each controlled district is different wireless telecommunications frequency, just effectively can avoid problem of co-channel interference, in addition, after receiver receives command information, the command information received is decoded, judge that controller ID that the command information that receives comprises numbers whether in the ID range of receiving of correspondence, if, then decoded command information is preserved, if not, then abandon described command information, by this, command information is selectively preserved, can prevent because operator neglects the transregional operation caused, interlace operation etc.Present invention effectively avoids the problems such as co-channel interference phenomenon, simultaneously easy to operate, safety.
Accompanying drawing explanation
Fig. 1 is the embodiment schematic flow sheet of hydraulic support remote control of the present invention;
Fig. 2 is the structural representation of a hydraulic support remote control system of the present invention embodiment;
Fig. 3 is the structural representation of another embodiment of hydraulic support remote control system of the present invention;
Fig. 4 is the structural representation of hydraulic support remote control system of the present invention 3rd embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, invention is further elaborated, but embodiments of the present invention are not limited thereto.
Embodiment 1
Shown in Figure 1, be the embodiment schematic flow sheet of hydraulic support remote control of the present invention.As shown in Figure 1, the hydraulic support remote control in this embodiment comprises the steps:
Step S101: send command information by transmitter, enters step S102;
Step S102: the receiver with transmitter with same wireless communication frequency receives described command information, enter step S103, wherein, receiver can only receive the command information of the transmitter transmission with it with same wireless communication frequency, then when operator's division operation hydraulic support, as long as in advance receiver corresponding for same controlled district and transmitter are set to same wireless telecommunications frequency, and the wireless telecommunications set of frequency in each controlled district is different wireless telecommunications frequency, just effectively problem of co-channel interference can be avoided;
Step S103: receiver is decoded to the command information received, judge that controller ID that the command information that receives comprises numbers whether in the ID range of receiving preset, if, then preserve decoded command information, if not, then abandon described command information, wherein, the decoded information of preservation is for controlling the action of the hydraulic support of corresponding controller ID numbering, command information generally can comprise receiver address information, controller ID numbers, type of action information, support action message etc., number corresponding controller with current controller ID and just need the target controller controlled for this straighforward operation, corresponding hydraulic support is target hydraulic support, receiver can only receive the command information corresponding with its wireless telecommunications frequency, and the wireless telecommunications frequency of transmitter corresponding to each controlled district is different, effectively can avoid co-channel interference like this, judge that ID numbering is whether in ID range of receiving, namely judge whether the current hydraulic support needing control is hydraulic support in current controlled district.
Accordingly, according to the scheme in the present embodiment, receiver can only receive the command information of the transmitter transmission with it with same wireless communication frequency, then when operator's division operation hydraulic support, only need in advance receiver corresponding for same controlled district and transmitter to be set to same wireless telecommunications frequency, and the wireless telecommunications set of frequency in each controlled district is different wireless telecommunications frequency, just effectively can avoid problem of co-channel interference, in addition, after receiver receives command information, the command information received is decoded, judge that controller ID that the command information that receives comprises numbers whether in the ID range of receiving of correspondence, if, then decoded command information is preserved, if not, then abandon described command information, by this, command information is selectively preserved, can prevent because operator neglects the transregional operation caused, interlace operation etc.The present invention can realize controlling the grouping of hydraulic support, efficiently avoid the problems such as co-channel interference phenomenon, easy to operate, safety simultaneously.
Wherein, the wireless telecommunications frequency of same transmitter and receiver and the ID range of receiving of receiver can be arranged as follows:
According to the wireless telecommunications frequency of the predetermined wireless telecommunications set of frequency receiver in controlled district, the ID range of receiving of receiver is set according to the ID numbering of the controller of hydraulic support each in controlled district, wherein, controlled district can divide according to actual needs in advance, such as, all hydraulic support is divided into M group, often group is made up of continuous print N platform hydraulic support, the prespecified wireless telecommunications frequency that can differentiate with other controlled district in each controlled district, each hydraulic support is respectively arranged with a corresponding controller, each controller has a corresponding ID numbering respectively, in controlled district, the ID numbering of each controller constitutes the ID range of receiving of receiver, can be achieved a butt joint by the controller that any one hydraulic pressure in controlled district is corresponding and receive the wireless telecommunications frequency of device and the setting of ID range of receiving, also other modes can be adopted,
According to the wireless telecommunications frequency of the wireless telecommunications set of frequency of the receiver transmitter corresponding with receiver, wherein, identical with receiver wireless telecommunications frequency for the transmitter of hydraulic support in the same controlled district of remote control, when arranging wireless telecommunications frequency, operator can be arranged by the triggering mode such as touch-screen, button.
Wherein in an embodiment, hydraulic support remote control of the present invention, step can also be comprised: the command information that receiver is preserved is read in timing, and the command information of reading is transmitted to target controller, the then target controller type of action information that just can comprise according to command information after receiving command information, the action of support action message control objectives hydraulic support, wherein, the cycle that timing is read can be chosen according to actual conditions, a few tens of milliseconds generally can be selected to be one-period, target controller can according to type of action information in command information, support action message drives corresponding hydraulic support action.
In addition, when operator carries out straighforward operation to hydraulic support, command information is sent by transmitter, generally want to compare and get information about command information and whether send successfully, whether the command information sent is correct etc., for this reason, wherein in an embodiment, hydraulic support remote control of the present invention can also comprise the steps:
When transmitter sends command information, start radiofrequency signal sending mode and send command information, after transmission command information completes, start rf signal reception pattern;
After receiver receives command information, according to receiver, transmitter is replied to the decoded result of command information, after preserving decoded command information, reply and represent that the message successfully receiving command information is to transmitter, and for example receiver obtains the ID numbering of controller to after command information decoding not in ID range of receiving by judgement, then corresponding error message can be fed back to emitter terminals, operating personnel just can search reason according to this feedback information, as judged whether to perform transregional operation etc.
On the other hand, conveniently operator's hydraulic control support intuitively, hydraulic support remote control of the present invention can also comprise step: when transmitter sends command information, idsplay order information, status information, the current wireless communication frequency of command information that send, wherein, status information generally comprise command information send, send successfully, send time-out etc.
Wherein, can carry out half-duplex wireless telecommunications between transmitter and receiver, ensure again in synchronization realizing two-way communication while, information can only have a transmission direction.Like this, also effectively can avoid the interference of homogenous frequency signal between transmitter and receiver, meanwhile, the controller in receiver and controlled district can be crossed RS485 bus and carry out half-duplex operation.
Embodiment 2
According to the hydraulic support remote control of the invention described above, the present invention also provides a kind of hydraulic support remote control system, and just the embodiment of hydraulic support remote control system of the present invention is described in detail below.The structural representation of the hydraulic support remote control system of the embodiment of the present invention has been shown in Fig. 2.Just be described in detail for the specific embodiment of hydraulic support remote control system wherein below.The hydraulic support remote control system of the present embodiment, can comprise transmitter 210, have the receiver 220 of same wireless communication frequency with transmitter 210, wherein:
Transmitter 210 comprises the first Transmit Receive Unit 211, first Transmit Receive Unit 211 is for sending command information, wherein, first Transmit Receive Unit 212 can also adopt GFSK (the Gaussfrequency Shift Keying under CF, GFSK Gaussian Frequency Shift Keying) mode realizes communication, to improve antijamming capability, command information generally can comprise receiver address information, controller ID numbers, type of action information, support action message etc., number corresponding controller with current controller ID and just need the target controller controlled for this straighforward operation, corresponding hydraulic support is target hydraulic support, receiver can only receive the command information corresponding with its wireless telecommunications frequency, and the wireless telecommunications frequency of transmitter corresponding to each controlled district is different, effectively can avoid co-channel interference like this, judge that ID numbering is whether in ID range of receiving, namely judge whether the current hydraulic support needing control is hydraulic support in current controlled district,
Receiver 220 comprises the second Transmit Receive Unit 221, decoding unit 222, control unit 223, second Transmit Receive Unit 211 is for after receiving described command information, the command information received is transmitted to described decoding unit, decoding unit 222 is decoded to received command information, whether control unit 223 numbers in described ID range of receiving for the controller ID judging decoded command information and comprise, if, then preserve decoded command information, if not, then described command information is abandoned.
Accordingly, according to the scheme in the present embodiment, the transmitter 210 in same controlled district and receiver 220 have identical wireless telecommunications frequency, receiver 220 can only receive the command information of transmitter 210 transmission with it with same wireless communication frequency, then when operator's division operation hydraulic support, only need in advance receiver 210 corresponding for same controlled district and transmitter 220 to be set to same wireless telecommunications frequency, and the wireless telecommunications set of frequency in each controlled district is different wireless telecommunications frequency, just effectively can avoid problem of co-channel interference, in addition, after receiver 220 receives command information, the command information received is decoded, judge that controller ID that the command information that receives comprises numbers whether in the ID range of receiving of correspondence, if, then decoded command information is preserved, if not, then abandon described command information, by this, command information is selectively preserved, can prevent because operator neglects the transregional operation caused, interlace operation etc.The present invention can realize controlling the grouping of hydraulic support, efficiently avoid the problems such as co-channel interference phenomenon, easy to operate, safety simultaneously.
Wherein, as shown in Figure 3, hydraulic support remote control system in the present embodiment can also comprise controller 230, the wireless telecommunications frequency of receiver 220 and the ID of receiver 220 can be arranged by coupled control, controller 230 is for the wireless telecommunications frequency according to the predetermined wireless telecommunications set of frequency receiver 220 in controlled district, the ID range of receiving of receiver is set according to the ID numbering of the controller of hydraulic support each in controlled district, wherein, controller can be the controller of any driving hydraulic support in controlled district, but do not represent it must is the controller of driving hydraulic support in controlled district, in addition, controlled district can divide according to actual needs in advance, such as, all hydraulic support is divided into M group, often group is made up of continuous print N platform hydraulic support, the prespecified wireless telecommunications frequency that can differentiate with other controlled district in each controlled district, each hydraulic support is respectively arranged with a corresponding controller, each controller has a corresponding ID numbering respectively, in controlled district, the ID numbering of each controller constitutes the ID range of receiving of receiver,
Shown in Figure 4, transmitter 210 can also comprise setting unit 212, setting unit 212 for the wireless telecommunications set of frequency transmitter 210 according to receiver 220 wireless telecommunications frequency wherein, transmitter 210 for the hydraulic support in the same controlled district of remote control is identical with the wireless telecommunications frequency of receiver 220, and operator can trigger setting unit 212 pairs of wireless telecommunications frequencies by touch-screen, button etc. and arrange.
Wherein in an embodiment, controller 230 also reads the command information of described receiver preservation for timing, and the command information of reading is transmitted to target controller, the type of action information that described target controller comprises according to described command information, support action message control objectives hydraulic support, the then target controller type of action information that just can comprise according to command information after receiving command information, the action of support action message control objectives hydraulic support, wherein, the cycle that timing is read can be chosen according to actual conditions, a few tens of milliseconds generally can be selected to be one-period, target controller can according to type of action information in command information, support action message drives corresponding hydraulic support action.
When operator carries out straighforward operation to hydraulic support, command information is sent by transmitter, generally want to compare and get information about command information and whether send successfully, whether the command information sent is correct etc., for this reason, first Transmit Receive Unit 211 is when described transmitter sends command information, start radiofrequency signal sending mode and send command information, after transmission command information completes, start rf signal reception pattern, control unit 223 is also for replying the first Transmit Receive Unit 211 according to the decoded result of described receiver to described command information, after control unit 223 preserves decoded command information, reply and represent that the message successfully receiving command information is to the first Transmit Receive Unit 211, and for example obtain the ID numbering of controller not in ID range of receiving by judgement after control unit 223 pairs of command information decodings, then corresponding error message can be fed back to the first Transmit Receive Unit 211, operating personnel just can search reason according to this feedback information, as judged whether to perform transregional operation etc.
On the other hand, conveniently operator's hydraulic control support intuitively, transmitter 210 can also comprise display unit 213, for when described transmitter sends command information, status information, the current wireless communication frequency of command information that show described command information, send, wherein, status information generally comprise command information send, send successfully, send time-out etc.
Wherein, half-duplex wireless telecommunications can be carried out between transmitter 210 and receiver 220, receiver 220 can carry out half-duplex operation to realize two-way communication by RS485 bus with between controller 230, ensure again in synchronization realizing two-way communication while, information can only have a transmission direction.Like this, the interference of homogenous frequency signal between transmitter and receiver can also effectively be avoided.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a hydraulic support remote control, is characterized in that, comprises the steps:
Receiver corresponding for same controlled district and transmitter are set to same wireless telecommunications frequency, and are different wireless telecommunications frequencies by the wireless telecommunications set of frequency in each controlled district;
Send command information by transmitter, wherein, the controller ID that described command information comprises numbers;
The receiver with described transmitter with same wireless communication frequency receives described command information;
Described receiver is decoded to the command information received, and judges that described controller ID numbers whether in the ID range of receiving preset, if so, then preserves decoded command information, if not, then abandon described command information.
2. hydraulic support remote control according to claim 1, is characterized in that:
Also comprise step: the ID range of receiving that receiver is set according to the ID numbering of the controller of hydraulic support each in controlled district;
Describedly receiver corresponding for same controlled district and transmitter are set to same wireless telecommunications frequency comprise step: according to the wireless telecommunications frequency of the predetermined wireless telecommunications set of frequency receiver in controlled district, according to the wireless telecommunications frequency of the wireless telecommunications set of frequency of the described receiver transmitter corresponding with described receiver.
3. hydraulic support remote control according to claim 1 and 2, it is characterized in that, also comprise step: the command information that described receiver is preserved is read in timing, and the command information of reading is transmitted to target controller, the type of action information that described target controller comprises according to described command information, support action message control objectives hydraulic support.
4. hydraulic support remote control according to claim 1 and 2, is characterized in that:
Also comprise step: when described transmitter sends command information, start radiofrequency signal sending mode and send command information, after transmission command information completes, start rf signal reception pattern; Receive after with frequency command information at described receiver, reply described transmitter according to the decoded result of described receiver to described command information;
Or/and
Also comprise step: when described transmitter sends command information, status information, the wireless telecommunications frequency of command information that show described command information, send.
5. hydraulic support remote control according to claim 1, is characterized in that, carries out half-duplex wireless telecommunications between described transmitter and described receiver.
6. a hydraulic support remote control system, is characterized in that, comprising:
Controller, for the wireless telecommunications frequency according to the predetermined wireless telecommunications set of frequency receiver in controlled district, arranges the ID range of receiving of receiver according to the ID numbering of the controller of hydraulic support each in controlled district;
Transmitter, comprises the first Transmit Receive Unit and setting unit, and described first Transmit Receive Unit is for sending command information, and described setting unit is used for the wireless telecommunications frequency corresponding according to the wireless telecommunications set of frequency of described receiver;
With described transmitter, there is the receiver of same wireless communication frequency, described receiver comprises the second Transmit Receive Unit, decoding unit, control unit, described second Transmit Receive Unit is used for after receiving described command information, the command information received is transmitted to described decoding unit, described decoding unit is decoded to received command information, whether described control unit numbers in described ID range of receiving for the controller ID judging decoded command information and comprise, if, then preserve decoded command information, if not, then abandon described command information.
7. hydraulic support remote control system according to claim 6, is characterized in that, described controller also reads the command information of described control unit preservation for timing, and the command information of reading is transmitted to target controller.
8. the hydraulic support remote control system according to claim 6 or 7, is characterized in that:
Described first Transmit Receive Unit, when sending command information, starts radiofrequency signal sending mode and sends command information, after transmission command information completes, starts rf signal reception pattern;
Described control unit also replys described first Transmit Receive Unit for the decoded result according to described decoding unit.
9. hydraulic support remote control system according to claim 8, is characterized in that:
Described transmitter also comprises display unit, for when described transmitter sends command information, and status information, the current wireless communication frequency of command information that show described command information, send;
Or
Carry out half-duplex wireless telecommunications between described transmitter and described receiver, described receiver is with carrying out half-duplex operation with described controller by RS485 bus.
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| CN201210358770.4A CN102865091B (en) | 2012-09-24 | 2012-09-24 | Hydraulic support remote control method and system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104675770A (en) * | 2014-09-13 | 2015-06-03 | 北京精密机电控制设备研究所 | Downhole mini hydraulic driving device |
| CN105019929B (en) * | 2015-07-30 | 2017-07-14 | 广州日滨科技发展有限公司 | Hydraulic support control method and system |
| CN105201537B (en) * | 2015-10-23 | 2018-02-13 | 日立楼宇技术（广州）有限公司 | The wireless numbering method and device certainly of hydraulic support electrohydraulic control system |
| CN112116796A (en) * | 2019-06-20 | 2020-12-22 | 北京京东尚科信息技术有限公司 | Remote controller and remote controller receiver |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509842B1 (en) * | 1999-04-16 | 2003-01-21 | Tiefenbach Bergbautechnik Gmbh | Control system for a longwall support |
| GB2399378A (en) * | 2003-03-11 | 2004-09-15 | Dbt Autom Gmbh | Hydraulic control arrangement for a mine roof support |
| CN101392656A (en) * | 2007-12-04 | 2009-03-25 | 哈尔滨工业大学深圳研究生院 | Hydraulic support electrohydraulic control system and ad hoc network method thereof |
| CN101907887A (en) * | 2010-07-28 | 2010-12-08 | 广州日滨科技发展有限公司 | Mineral hydraulic bracket controller, bracket control system and communication method |
| CN102278132A (en) * | 2011-08-25 | 2011-12-14 | 北京天地玛珂电液控制系统有限公司 | Device and method for detecting position of coal mining machine based on wireless ZigBee technology |
| CN102352763A (en) * | 2011-10-27 | 2012-02-15 | 北京天地玛珂电液控制系统有限公司 | Working face hydraulic support control device with wireless communication function |
-
2012
- 2012-09-24 CN CN201210358770.4A patent/CN102865091B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509842B1 (en) * | 1999-04-16 | 2003-01-21 | Tiefenbach Bergbautechnik Gmbh | Control system for a longwall support |
| GB2399378A (en) * | 2003-03-11 | 2004-09-15 | Dbt Autom Gmbh | Hydraulic control arrangement for a mine roof support |
| CN101392656A (en) * | 2007-12-04 | 2009-03-25 | 哈尔滨工业大学深圳研究生院 | Hydraulic support electrohydraulic control system and ad hoc network method thereof |
| CN101907887A (en) * | 2010-07-28 | 2010-12-08 | 广州日滨科技发展有限公司 | Mineral hydraulic bracket controller, bracket control system and communication method |
| CN102278132A (en) * | 2011-08-25 | 2011-12-14 | 北京天地玛珂电液控制系统有限公司 | Device and method for detecting position of coal mining machine based on wireless ZigBee technology |
| CN102352763A (en) * | 2011-10-27 | 2012-02-15 | 北京天地玛珂电液控制系统有限公司 | Working face hydraulic support control device with wireless communication function |
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