CN208337768U - A kind of remote non-blind area monitoring system of atmosphere pollution - Google Patents

Abstract

The utility model discloses the remote non-blind area monitoring systems of a kind of atmosphere pollution in air quality monitoring technology field, including being mounted on roof platform, interconnect the remote camera of setting, particulate matter remote sensing monitoring terminal, it further include control centre, smart phone, it further include not by the unmanned plane of obstacle Influence on Architecture, unmanned plane includes positioning mechanism, image mechanism, particle monitoring mechanism, communication module, control centre includes monitoring data receiving module, particulate matter analysis module, control signal transmitting module, monitoring data receiving module is connect with particulate matter analysis module, particulate matter remote sensing monitoring terminal and the communication module of unmanned plane form interconnecting relation, roof platform is equipped with the blocking parts for blocking remote camera and particulate matter remote sensing monitoring terminal, it further include blocking the outer of movement for driving blocking parts to generate Straight line driving mechanism.Remote camera, particulate matter remote sensing monitoring terminal, unmanned plane can be protected and can guarantee that three works in coordination.

Description

A kind of remote non-blind area monitoring system of atmosphere pollution

Technical field

The utility model relates to air quality monitoring technology field, in particular to a kind of remote non-blind area prison of atmosphere pollution Control system.

Background technique

Trip, the health etc. of present atmospheric pollution effect people, national increasing policy carry out atmospheric monitoring and administer, at present Near the ground to use conventional point type instrument monitoring, high-altitude is monitored using remote sensing radar Jian Ce He lookout video camera, and point, face data do not have It being effectively combined and is complementary to one another, remote sensing monitoring is easy to be blocked by urban architecture, so that data invalid, and cannot be effective The case where identifying burst pollution source and pollution transportation Spatio-temporal Evolution situation, and cannot intuitively viewing monitoring area peripheral edge in real time.

For this purpose, start in the market with unmanned plane carry out pollution condition monitoring, due to unmanned plane can in three dimensions into Capable movement can bypass obstacle building and be monitored, and flexibility is fine, and particle monitoring mechanism can be carried on unmanned plane, can incite somebody to action The data monitored are sent to control centre, and unmanned plane can also match with remote camera, particulate matter remote sensing monitoring terminal It closes and uses.

But the prior art has ignored a problem: under rainstorm weather, unmanned plane, remote camera, particulate matter are distant Sense monitoring terminal can not carry out the work, since remote camera, particulate matter remote sensing monitoring terminal are installed in roof platform On, if being blocked without appropriate, will result in damage and influencing monitoring accuracy.

Utility model content

The purpose of the utility model is to provide a kind of remote non-blind area monitoring systems of atmosphere pollution, can protect and take the photograph at a distance Camera, particulate matter remote sensing monitoring terminal, unmanned plane and it can guarantee that three works in coordination.

Purpose of the utility model is realized as follows: a kind of remote non-blind area monitoring system of atmosphere pollution, including peace On roof platform, interconnection setting remote camera, particulate matter remote sensing monitoring terminal, further include control centre, intelligence Energy mobile phone further includes not by the unmanned plane of obstacle Influence on Architecture, and the unmanned plane includes positioning mechanism, camera shooting mechanism, particulate matter Mechanism for monitoring, communication module, the control centre include monitoring data receiving module, particulate matter analysis module, control signal hair Module is sent, the particle monitoring mechanism forms connection relationship by communication module and smart phone, monitoring data receiving module, The monitoring data receiving module is connect with particulate matter analysis module, the communication of the particulate matter remote sensing monitoring terminal and unmanned plane Module forms interconnecting relation, and roof platform is equipped with for blocking blocking for remote camera and particulate matter remote sensing monitoring terminal Component further includes the outer straight line driving mechanism for driving blocking parts generation to block movement, further includes capping movement controller, The capping movement controller is equipped with the wireless receiving module to be signaled for receiving control signal transmitting module；

The blocking parts includes the master that can be directly used for covering in remote camera and particulate matter remote sensing monitoring terminal Box body, roof platform are equipped with a pair of rail with main cartridge activity matching, extending direction is consistent with main cartridge moving direction Road, be equipped on roof platform for it is driving that main cartridge moved along track, by capping movement controller control it is outer directly Line driving mechanism, the main cartridge side, which is equipped with, can hold remote camera and what particulate matter remote sensing monitoring end activity passed through allows Position opening；

The remote camera neighbouring position is equipped with the first position-limited rack, is equipped with and covers on first position-limited rack The first connected limit inductor of movement controller, the particulate matter remote sensing monitoring terminal neighbouring position are equipped with the second limit Frame is equipped with the second limit inductor being connected with capping movement controller, the main cartridge inside on second position-limited rack Be equipped on wall when main cartridge is in covering position correspond to just the first limit rack position and by the first limit inductor institute First tablet of induction is equipped on the main cartridge inner sidewall when main cartridge be in covering position and corresponds to second just and limit Position rack position and the second tablet for being incuded by the second limit inductor；

Be equipped on the main cartridge without using when unmanned plane seal unmanned plane, using when unmanned plane be in opening-wide state Envelope cabin, it further includes being mounted on master horizontally slidablely that the envelope cabin, which includes that the L-type that is fixedly connected with main cartridge shuts down frame, Moving sealed closure on box body, be equipped on the main cartridge for it is driving that moving sealed closure slided, acted by capping The canned linear driving mechanism of controller control, envelope cabin L-type when needing to form sealing structure shut down frame and shifting For dynamic sealing lid just at split state, it includes the vertical part being vertically arranged that the L-type, which shuts down frame, further includes horizontally disposed, use In the transverse part for the unmanned plane that stops dwelling.

Compared with prior art, the utility model has the beneficial effects that: first, can be covered in front of very heavy rains Grain object remote sensing monitoring terminal and remote camera, when needing rain cover, under the driving of outer straight line driving mechanism, main cartridge can Particulate matter remote sensing monitoring terminal and remote camera are covered in, and due to being provided with the first limit inductor and the second limit Inductor, when main cartridge is covered, the first tablet incudes the first limit inductor, the second limit of the second tablet induction Inductor has illustrated main cartridge while having hidden when the first limit inductor and the second limit inductor generate inductive signal Lid particulate matter remote sensing monitoring terminal and remote camera, also, the first limit inductor and the second limit inductor are in main box It is also at when body is covered in the inner cavity of main cartridge, also avoids rainwater to the first limit inductor and the second limit inductor Corrosion function；Second, and can also place and seal unmanned plane well, unmanned plane can be stopped when not using unmanned plane On the transverse part that L-type shuts down frame, then moving sealed closure stops machine frame movement simultaneously to L-type under the driving of canned linear driving mechanism The envelope cabin that frame pieces together sealing structure is shut down with L-type, when using unmanned plane, drives movement using canned linear driving mechanism Sealing cover moves on main cartridge, so that moving sealed closure, which shuts down frame with L-type, separates and be in opening-wide state, so that unmanned function It is enough easily to enter and leave, in case the position of stopping dwelling of unmanned plane is interferenceed with particulate matter remote sensing monitoring terminal, remote camera.

In addition, monitoring system combination three-dimensional geographic information system provided by the utility model, by particle concentration and face Color value is mapped, and can intuitively view the strength distribution situation of regions particulate object, and precise positioning to physical location is in parallel Dynamic video camera carries out image analysis, and the region that can not be detected to fixed equipment is taken photo by plane using unmanned plane, passed when by fructufy It send to platform, realizes quickly pollution positioning, reduce the workload manually checked, increase image capture analytic function, improve normality The accuracy of monitoring and the efficiency for finding pollution sources.

Weight reduction openings, the moving sealed closure are equipped on the upside of the main cartridge as a further improvement of the utility model, Be mounted in weight reduction openings horizontally slidablely, the blocking parts include can horizontal extension, stretch made of waterproof material It contracts fluffy, described telescopic tarpaulin one end is connected with weight reduction openings one end, and the telescopic tarpaulin other end is connected with moving sealed closure, described Moving sealed closure shuts down with L-type and seals weight reduction openings together with the telescopic tarpaulin and moving sealed closure when frame is in split state.By In being provided with weight reduction openings, the gravitational load of main cartridge can reduce, mitigate the kinetic equation loss of outer straight line driving mechanism, and stretch Fluffy and moving sealed closure can seal weight reduction openings together, to keep the rain cover performance of main cartridge.

The canned linear driving mechanism includes sealing driving motor, horizontal hair as a further improvement of the utility model, Bar, traversing screw, the traversing screw are mounted on moving sealed closure, and the traversing screw is set with horizontal hair bar, the horizontal hair bar It is horizontally disposed with and is pivotally mounted on main cartridge, the sealing driving motor is mounted on main cartridge and is moved by capping Make the control of controller, the output main shaft of the sealing driving motor is connect with horizontal hair bar shaft end coaxial transmission.Screw rod can be used The mode of transmission drives the moving sealed closure smoothly to be moved.

The outer straight line driving mechanism is equipped with two sets and respectively corresponds two rails as a further improvement of the utility model, Road, each outer straight line driving mechanism include pan drive motor, translation screw rod, translation screw, and the translation screw is mounted on master On box body, the translation screw suit translation screw rod, the translation screw rod is horizontally disposed and is pivotally mounted on roof On platform, the pan drive motor is mounted on roof platform and is controlled by capping movement controller, the translation screw axis End is connect with the output main shaft coaxial transmission of pan drive motor.It is flat to drive main cartridge to carry out that the mode of screw rod transmission can be used Steady movement.

Detailed description of the invention

Fig. 1 is the stereoscopic monitoring principle concept figure of the utility model.

Fig. 2 is the working state schematic representation of the utility model.

Fig. 3 is state diagram of the utility model in rain cover.

Fig. 4 is the A-A cross-sectional view in Fig. 2.

Fig. 5 is the B-B cross-sectional view in Fig. 3.

Fig. 6 is the opening-wide state schematic diagram for sealing cabin.

Fig. 7 is the top view in Fig. 6.

Fig. 8 is the control planning schematic diagram of the utility model.

Wherein, 1 unmanned plane, 1a positioning mechanism, 1b image mechanism, 1c particle monitoring mechanism, 1d communication module, 2 long distances From video camera, 3 particulate matter remote sensing monitoring terminals, 4 control centres, 4a monitoring data receiving module, 4b particulate matter analysis module, 4c Signal transmitting module is controlled, 5 blocking parts, 501 main cartridges, 501a weight reduction openings, 501b, which steps down, to be open, 502 moving sealed closures, 503L type shutdown frame, the vertical part 503a, 503b transverse part, 504 envelope cabins, 505 telescopic tarpaulins, 506 sealing driving motors, 507 horizontal hair bars, 508 traversing screws, 509 first tablets, 510 second tablets, 6 outer straight line driving mechanisms, 601 pan drive motors, 602 is flat Silk shifting rod, 603 translation screws, 7 first limit inductors, 8 first position-limited racks, 9 second limit inductors, 10 second position-limited racks, 11 roof platforms, 12 obstacles building, 13 tracks, 14 capping movement controllers, 14a wireless receiving module, 15 smart phones.

Specific embodiment

As shown in figures 1-8, the remote non-blind area monitoring system of a kind of atmosphere pollution, including be mounted on roof platform 11 , the remote camera 2 of interconnection setting, particulate matter remote sensing monitoring terminal 3, further include control centre 4, smart phone 15, also Including the unmanned plane 1 not influenced by obstacle building 12, unmanned plane 1 includes positioning mechanism 1a, camera shooting mechanism 1b, particle monitoring machine Structure 1c, communication module 1d, control centre 4 include monitoring data receiving module 4a, particulate matter analysis module 4b, control signal transmission Module 4c, particle monitoring mechanism 1c are formed and are connected by communication module 1d and smart phone 15, monitoring data receiving module 4a Relationship, monitoring data receiving module 4a are connect with particulate matter analysis module 4b, particulate matter remote sensing monitoring terminal 3 and unmanned plane 1 Communication module 1d forms interconnecting relation, and roof platform 11 is equipped with for blocking remote camera 2 and particulate matter remote sensing monitoring The blocking parts 5 of terminal 3 further includes the outer straight line driving mechanism 6 for driving the generation of blocking parts 5 to block movement, further includes Movement controller 14 is covered, capping movement controller 14 is equipped with the nothing signaled for receiving control signal transmitting module 4c Line receiving module 14a.

Above-mentioned blocking parts 5 includes that can be directly used for covering in remote camera 2 and particulate matter remote sensing monitoring terminal 3 Main cartridge 501, roof platform 11 are equipped with a pair of match with 501 activity of main cartridge, 501 movement side of extending direction and main cartridge To consistent track 13, be equipped on roof platform 11 for it is driving that main cartridge 501 moved along track 13, covered The outer straight line driving mechanism 6 that movement controller 14 controls, 501 side of main cartridge, which is equipped with, can hold remote camera 2 and particulate matter The resigning opening 501b that 3 activity of remote sensing monitoring terminal passes through.

Above-mentioned 2 neighbouring position of remote camera is equipped with the first position-limited rack 8, is equipped with and covers on the first position-limited rack 8 The first connected limit inductor 7 of movement controller 14,3 neighbouring position of particulate matter remote sensing monitoring terminal are equipped with the second position-limited rack 10, the second limit inductor 9 being connected with capping movement controller 14 is installed, on the inside of main cartridge 501 on second position-limited rack 10 Be equipped on wall when main cartridge 501 is in covering position correspond to just 8 position of the first position-limited rack and by the first limit induction The first tablet 509 that device 7 is incuded is equipped on 501 inner sidewall of main cartridge lucky when main cartridge 501 is in covering position The second tablet 510 that is corresponding to 10 position of the second position-limited rack and being incuded by the second limit inductor 9.

Be equipped on above-mentioned main cartridge 501 without using sealed when unmanned plane 1 unmanned plane 1, using when unmanned plane 1 in spacious The envelope cabin 504 of open state, envelope cabin 504 include that the L-type being fixedly connected with main cartridge 501 shuts down frame 503, and further including can be horizontal The moving sealed closure 502 being slidably mounted on main cartridge 501 is equipped with for driving moving sealed closure 502 on main cartridge 501 Canned linear driving mechanism being slided, being controlled by capping movement controller 14, envelope cabin 504 are needing to form sealing knot L-type shuts down frame 503 and moving sealed closure 502 just at split state when structure, and it is perpendicular including what is be vertically arranged that L-type shuts down frame 503 Portion 503a further includes transverse part 503b horizontally disposed, for the unmanned plane 1 that stops dwelling.

Weight reduction openings 501a is equipped on the upside of above-mentioned main cartridge 501, moving sealed closure 502 is mounted on loss of weight horizontally slidablely Be open 501a in, blocking parts 5 include can horizontal extension, telescopic tarpaulin 505 made of waterproof material, 505 one end of telescopic tarpaulin It is connected with the one end weight reduction openings 501a, 505 other end of telescopic tarpaulin is connected with moving sealed closure 502, in moving sealed closure 502 and L Type shuts down telescopic tarpaulin 505 and moving sealed closure 502 when frame 503 is in split state and seals weight reduction openings 501a together.

Above-mentioned canned linear driving mechanism includes sealing driving motor 506, horizontal hair bar 507, traversing screw 508, traversing silk Mother 508 is mounted on moving sealed closure 502, and traversing screw 508 is set with horizontal hair bar 507, and horizontal hair bar 507 is horizontally disposed and can be around axis It is rotationally mounted on main cartridge 501, sealing driving motor 506 is mounted on main cartridge 501 and by capping movement controller 14 Control, sealing driving motor 506 output main shaft connect with 507 shaft end coaxial transmission of horizontal hair bar.

Above-mentioned outer straight line driving mechanism 6 is equipped with two sets and respectively corresponds two tracks 13, and each outer straight line driving mechanism 6 wraps Pan drive motor 601, translation screw rod 602, translation screw 603 are included, translation screw 603 is mounted on main cartridge 501, translates silk 603 suit translation screw rod 602 of mother, translation screw rod 602 is horizontally disposed and is pivotally mounted on roof platform 11, translates Driving motor 601 is mounted on roof platform 11 and is controlled by capping movement controller 14, and translation 602 shaft end of screw rod and translation are driven The output main shaft coaxial transmission connection of dynamic motor 601.

When not using unmanned plane 1, unmanned plane 1 is parked in L-type and is shut down on the transverse part 503b of frame 503, then mobile sealing Lid 502 shuts down the movement of frame 503 and shut down frame 503 with L-type under the driving of canned linear driving mechanism to L-type pieces together sealing knot The envelope cabin 504 of structure drives moving sealed closure 502 in main cartridge when using unmanned plane 1 using canned linear driving mechanism It is moved on 501, so that moving sealed closure 502, which shuts down frame 503 with L-type, separates and be in opening-wide state, enables unmanned plane 1 non- Often easily enter and leave.

When needing rain cover, unmanned plane 1 is sealed first with envelope cabin 504, then driving in outer straight line driving mechanism 6 Under, main cartridge 501 is moved along track 13 to remote camera 2, particulate matter remote sensing monitoring terminal 3, and main cartridge 501 can cover Firmly particulate matter remote sensing monitoring terminal 3 and remote camera 2, and due to being provided with the first limit inductor 7 and the second limit Inductor 9, when main cartridge 501 is covered, the first tablet 509 incudes the first limit inductor 7, the second tablet 510 Incude the second limit inductor 9, when the first limit inductor 7 and the second limit inductor 9 generate inductive signal, illustrates to lead Box body 501 covers particulate matter remote sensing monitoring terminal 3 and remote camera 2, also, 7 He of the first limit inductor simultaneously Second limit inductor 9 is also in the inner cavity of main cartridge 501 when main cartridge 501 is covered, and avoids rainwater leaching bad first Limit inductor 7 and the second limit inductor 9.

The monitoring system operating mode is as follows: when work, using 5 kilometers of pair radius of range of particulate matter remote sensing monitoring terminal Atmosphere particle concentration monitoring is carried out, the scan period 10 minutes, the distribution situation of regions particulate object can be quickly obtained, in terminal Side place a remote camera, carry out image, video capture, and be equipped with a frame have positioning system, camera system, The unmanned plane of grain object sensor, carries out taking photo by plane with particulate count according to acquisition for building rear end.

When normality monitors, terminal does cycle period scanning, obtains regions particulate object distribution situation, and remote camera carries out Presetting bit inspection shooting, acquisition image, video data analyze the events such as exposed building site, smoke stack emission, slag-soil truck, traffic jam, Unmanned plane is taken photo by plane with particulate count in building rear end according to acquisition.

When linkage monitoring, terminal finds pollution problem, sends suspected pollution source location information, including angle, distance, longitude and latitude Degree etc., remote camera interrupt presetting bit inspection, rotate to designated position and zoom shot according to the information of terminal, obtain and doubt Like pollution source images, video data, remote camera is found the problem, and sends suspected pollution source position angle information, terminal rotation It goes to specified angle and is oriented monitoring, obtain suspected pollution source overhead particle concentration data, when two equipment linkages monitor It is analyzed to identify when being pollution sources, by terminal as unmanned plane sends location information, including angle, distance, longitude and latitude etc., unmanned plane flies Row is taken photo by plane to designated position and is acquired with particle concentration data, and the pollutional condition information collected evidence on the spot is sent to monitoring Platform carries out pollution alarm.

The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed by the utility model, this For the technical staff in field according to disclosed technology contents, not needing creative labor can be special to some of which technology Sign makes some replacements and deformation, these replacements and deformation are within the protection scope of the present utility model.

Claims (4)

1. a kind of remote non-blind area monitoring system of atmosphere pollution, on roof platform (11), interconnection setting including being mounted on Remote camera (2), particulate matter remote sensing monitoring terminal (3) further include control centre (4), smart phone (15), further include not By the unmanned plane (1) that obstacle building (12) influences, the unmanned plane (1) includes positioning mechanism (1a), camera shooting mechanism (1b), particle Object mechanism for monitoring (1c), communication module (1d), the control centre (4) include monitoring data receiving module (4a), particulate matter point Module (4b), control signal transmitting module (4c) are analysed, the particle monitoring mechanism (1c) passes through communication module (1d) and intelligence Mobile phone (15), monitoring data receiving module (4a) form connection relationship, the monitoring data receiving module (4a) and particulate matter point Module (4b) connection is analysed, communication module (1d) the formation interconnection of the particulate matter remote sensing monitoring terminal (3) and unmanned plane (1) is closed System, it is characterised in that: roof platform (11) is equipped with for blocking remote camera (2) and particulate matter remote sensing monitoring terminal (3) blocking parts (5) further includes the outer straight line driving mechanism (6) for driving blocking parts (5) generation to block movement, also Including covering movement controller (14), the capping movement controller (14) is equipped with for receiving control signal transmitting module The wireless receiving module (14a) that (4c) is signaled；

The blocking parts (5) includes that can be directly used for covering in remote camera (2) and particulate matter remote sensing monitoring terminal (3) Main cartridge (501), roof platform (11) is equipped with a pair of match with main cartridge (501) activity, extending direction and main cartridge (501) the consistent track of moving direction (13) is equipped with for driving main cartridge (501) along track on roof platform (11) (13) outer straight line driving mechanism (6) that is mobile, being controlled by capping movement controller (14), the main cartridge (501) one are carried out The resigning opening (501b) that side, which is equipped with, can hold remote camera (2) and particulate matter remote sensing monitoring terminal (3) activity passes through；

Remote camera (2) neighbouring position is equipped with the first position-limited rack (8), is equipped on first position-limited rack (8) The first limit inductor (7) being connected with capping movement controller (14), particulate matter remote sensing monitoring terminal (3) neighbouring position It is equipped with the second position-limited rack (10), second to be connected with capping movement controller (14) is installed on second position-limited rack (10) Limit inductor (9), it is just right when main cartridge (501) is in covering position to be equipped on main cartridge (501) inner sidewall The first tablet (509) that is answering the first position-limited rack (8) position and being incuded by the first limit inductor (7), the main cartridge (501) be equipped on inner sidewall when main cartridge (501) is in covering position correspond to just the second position-limited rack (10) position and The second tablet (510) incuded by the second limit inductor (9)；

Be equipped on the main cartridge (501) without using sealed when unmanned plane (1) unmanned plane (1), using at when unmanned plane (1) In the envelope cabin (504) of opening-wide state, the envelope cabin (504) includes that the L-type being fixedly connected with main cartridge (501) shuts down frame It (503), further include the moving sealed closure (502) being mounted on main cartridge (501) horizontally slidablely, the main cartridge (501) On be equipped with for driving canned linear that moving sealed closure (502) slided, being controlled by capping movement controller (14) Driving mechanism, the envelope cabin (504) L-type when needing to form sealing structure shut down frame (503) and moving sealed closure (502) just at split state, it further includes that level is set that it includes the vertical part (503a) being vertically arranged that the L-type, which shuts down frame (503), Transverse part (503b) setting, for unmanned plane (1) of stopping dwelling.

2. the remote non-blind area monitoring system of a kind of atmosphere pollution according to claim 1, it is characterised in that: the main box It is equipped with weight reduction openings (501a) on the upside of body (501), the moving sealed closure (502) is mounted on weight reduction openings horizontally slidablely In (501a), the blocking parts (5) include can horizontal extension, the telescopic tarpaulin made of waterproof material (505), it is described flexible Fluffy (505) one end is connected with the one end weight reduction openings (501a), telescopic tarpaulin (505) other end and moving sealed closure (502) phase Even, when the moving sealed closure (502) is in split state with L-type shutdown frame (503), the telescopic tarpaulin (505) and movement are close Capping (502) seals weight reduction openings (501a) together.

3. the remote non-blind area monitoring system of a kind of atmosphere pollution according to claim 1, it is characterised in that: the sealing Straight line driving mechanism includes sealing driving motor (506), horizontal hair bar (507), traversing screw (508), the traversing screw (508) It is mounted on moving sealed closure (502), traversing screw (508) suit horizontal hair bar (507), the horizontal hair bar (507) is horizontal It is arranged and is pivotally mounted on main cartridge (501), the sealing driving motor (506) is mounted on main cartridge (501) Control upper and by capping movement controller (14), the output main shaft and horizontal hair bar (507) axis of sealing driving motor (506) Hold coaxial transmission connection.

4. the remote non-blind area monitoring system of a kind of atmosphere pollution according to claim 1, it is characterised in that: described outer straight Line driving mechanism (6) is equipped with two sets and respectively corresponds two tracks (13), and each outer straight line driving mechanism (6) includes driven in translation Motor (601), translation screw rod (602), translation screw (603), the translation screw (603) are mounted on main cartridge (501), institute Translation screw (603) suit translation screw rod (602) is stated, the translation screw rod (602) is horizontally disposed and pivotally installs On roof platform (11), the pan drive motor (601) is mounted on roof platform (11) and by capping movement controller (14) it controls, translation screw rod (602) shaft end is connect with the output main shaft coaxial transmission of pan drive motor (601).