阅读说明：本技术 智能一体化直连供水系统 (Intelligent integrated direct-connected water supply system ) 是由 宋世锋 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种智能一体化直连供水系统,包括：监测单元,用于识别并上传云端存储操作人员信息；触摸单元,用于提供交互控制；控制单元,与触摸单元、监测单元均通信连接,并根据触摸单元和监测单元提供的信号执行控制动作；供水单元,用于连接进水管和出水管,且通过阀门控制进水管和出水管的连通；供水单元至少具有两个,且两个供水单元均与同一个进水管和出水管连接；水流检测单元,设置在进水管和出水管上,且均与控制单元通信连接,以传递水流检测信号；所述控制单元根据水流检测信号控制供水单元的阀门启动或关闭。本发明能够提高安全性,减少不安全因素,强化供水系统的管理。(The invention discloses an intelligent integrated direct-connected water supply system, which comprises: the monitoring unit is used for identifying and uploading the information of the cloud storage operator; the touch unit is used for providing interaction control; the control unit is in communication connection with the touch unit and the monitoring unit and executes control action according to signals provided by the touch unit and the monitoring unit; the water supply unit is used for connecting the water inlet pipe and the water outlet pipe and controlling the communication of the water inlet pipe and the water outlet pipe through a valve; the number of the water supply units is at least two, and the two water supply units are connected with the same water inlet pipe and water outlet pipe; the water flow detection unit is arranged on the water inlet pipe and the water outlet pipe and is in communication connection with the control unit so as to transmit a water flow detection signal; and the control unit controls the valve of the water supply unit to be started or closed according to the water flow detection signal. The invention can improve the safety, reduce unsafe factors and strengthen the management of the water supply system.)

1. The utility model provides an intelligence integration directly links water supply system which characterized in that includes:

the monitoring unit is used for identifying and uploading the information of the cloud storage operator;

the touch unit is used for providing interaction control;

the control unit is in communication connection with the touch unit and the monitoring unit and executes control action according to signals provided by the touch unit and the monitoring unit;

the water supply unit is used for connecting the water inlet pipe and the water outlet pipe and controlling the communication of the water inlet pipe and the water outlet pipe through a valve;

the number of the water supply units is at least two, and the two water supply units are connected with the same water inlet pipe and water outlet pipe;

the water flow detection unit is arranged on the water inlet pipe and the water outlet pipe and is in communication connection with the control unit so as to transmit a water flow detection signal;

and the control unit controls the valve of the water supply unit to be started or closed according to the water flow detection signal.

2. The intelligent integrated direct-connected water supply system according to claim 1, wherein when the control unit receives the water flow detection signal and the touch unit interactively transmits the common water supply mode to the control unit, the control unit detects whether the two valves are simultaneously opened, and if so, one of the two valves is closed.

3. The intelligent integrated direct connection water supply system according to claim 2, wherein when the control unit receives the water flow detection signal and the touch unit interactively transmits the maximum water supply mode to the control unit, the control unit detects whether the two valves are simultaneously opened, and if not, the two valves are simultaneously opened.

4. The intelligent integrated direct connection water supply system according to claim 1, wherein the monitoring unit and the control unit cooperate to identify operator information and detect whether the current is a docket; the monitoring unit is also in direct communication with the cloud so as to upload the acquired operator information to the cloud for storage; when the control unit and the monitoring unit are matched to successfully identify the recording personnel, the control unit sends a recorded mark to the cloud, and the cloud receives the recorded mark and then sends the monitoring unit to the image mark of the cloud for recording; otherwise, the cloud end marks the record as the non-record, and classifies the recorded record and the non-record at the same time.

5. The intelligent integrated direct connection water supply system according to claim 4, wherein the cloud end receives the operator information sent by the monitoring unit and checks the previously stored and marked filed personnel, if a matching item exists, the filed marker is fed back to the control unit, the control unit checks the cloud end matching result and the self identification result, if the matching result is consistent, the touch unit starts an interaction function, and if the matching result is different, the cloud end manual identification is carried out, and the cloud end manual identification is distinguished by workers.

6. The intelligent integrated direct-connected water supply system according to claim 2, wherein the number of the water flow detection units is two, and the two water flow detection units are respectively arranged between the connection nodes of the two water supply units on the water inlet pipe and between the connection nodes of the two water supply units on the water outlet pipe and the water outlet pipe.

7. The intelligent integrated direct connection water supply system according to claim 1, wherein the monitoring unit comprises a camera, a bracket for mounting the camera; the support is arranged on an external box body and comprises a base and a protective plate, wherein the base is used for being connected with the box body, the protective plate is arranged on the base, and two ends of the base in the horizontal direction are respectively used for being connected with the box body and the protective plate; the camera is characterized in that through holes for bolts to penetrate through are formed in the two ends of the base, mounting holes are formed in the positions, corresponding to the through holes, of the guard plates and are blind holes, and flexible packages are arranged on the other sides, opposite to the mounting holes, of the guard plates and are in contact with the camera.

8. The intelligent integrated direct-connected water supply system according to claim 7, wherein a groove is formed in the base at one end opposite to the guard plate, the groove is matched with the guard plate, the through hole is formed in the bottom position of the groove, arc-shaped panels are arranged on the base at positions close to two sides of the groove, the arc-shaped panels and the end face of the base form a U-shaped groove, a positioning block corresponding to the U-shaped groove is arranged on the camera, and when the camera is installed on the support, the positioning block is located in the U-shaped groove.

9. The intelligent integrated direct-connected water supply system according to claim 8, wherein an inclined plane is further arranged on the end face of the base opposite to the guard plate, the inclined plane is inclined downwards from the connection part of the end face of the base and the arc-shaped panel and faces away from one end of the arc-shaped panel, a threaded hole is formed in the inclined plane, and the camera is installed on the inclined plane through a bolt and the threaded hole in a matched mode.

10. The intelligent integrated direct-connected water supply system according to claim 9, wherein the guard plate is further provided with a cover plate, the cover plate is positioned above the camera, and the cover plate and the guard plate form an L shape; one side of the cover plate, which faces the camera, is provided with a flexible wrapping object, and the flexible wrapping object is in contact with the camera; the flexible wrappage on the cover plate and the flexible wrappage on the guard plate are both provided with arc invaginations.

Technical Field

The invention relates to a water supply system, in particular to an intelligent integrated direct-connected water supply system.

Background

The existing water supply system generally controls by utilizing a valve independently, a plurality of operators change water supply or not and the size of water supply by operating the valve, and the adjustment of the water supply size is carried out by the opening degree of the valve, so that the water supply system is limited by the size of the valve and the size of a pipe body. Moreover, the operation can be operated by anyone, and has unsafe factors.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an intelligent integrated direct-connected water supply system which can improve the safety, reduce unsafe factors and strengthen the management of a water supply system.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent integrated direct connection water supply system, comprising:

the monitoring unit is used for identifying and uploading the information of the cloud storage operator;

the touch unit is used for providing interaction control;

the control unit is in communication connection with the touch unit and the monitoring unit and executes control action according to signals provided by the touch unit and the monitoring unit;

the water supply unit is used for connecting the water inlet pipe and the water outlet pipe and controlling the communication of the water inlet pipe and the water outlet pipe through a valve;

the number of the water supply units is at least two, and the two water supply units are connected with the same water inlet pipe and water outlet pipe;

the water flow detection unit is arranged on the water inlet pipe and the water outlet pipe and is in communication connection with the control unit so as to transmit a water flow detection signal;

and the control unit controls the valve of the water supply unit to be started or closed according to the water flow detection signal.

As a further improvement of the invention, when the control unit receives the water flow detection signal and the touch unit interactively transmits the common water supply mode to the control unit, the control unit detects whether the two valves are simultaneously opened or not, and if so, closes one of the two valves.

As a further improvement of the invention, when the control unit receives the water flow detection signal and the touch unit interactively transmits the maximum water supply mode to the control unit, the control unit detects whether the two valves are simultaneously opened or not, and if not, the two valves are simultaneously opened.

As a further improvement of the invention, the monitoring unit and the control unit are matched to identify the information of the operator, and detect whether the operator is a docket currently; the monitoring unit is also in direct communication with the cloud so as to upload the acquired operator information to the cloud for storage; when the control unit and the monitoring unit are matched to successfully identify the recording personnel, the control unit sends a recorded mark to the cloud, and the cloud receives the recorded mark and then sends the monitoring unit to the image mark of the cloud for recording; otherwise, the cloud end marks the record as the non-record, and classifies the recorded record and the non-record at the same time.

As a further improvement of the invention, the cloud receives the operator information sent by the monitoring unit, checks the recorded personnel which are stored and marked before, if the matched items exist, the recorded marks are fed back to the control unit, the control unit checks the matching result of the cloud and the self-identification result, if the matching results are consistent, the touch unit starts the interaction function, and if the matching results are different, the cloud is entered for manual identification, and the identification is distinguished by the staff.

As a further improvement of the invention, the number of the water flow detection units is two, and the two water flow detection units are respectively arranged between the connection nodes of the two water supply units on the water inlet pipe and between the connection nodes of the two water supply units on the water outlet pipe and the water outlet pipe.

As a further improvement of the invention, the monitoring unit comprises a camera and a bracket for mounting the camera; the support is arranged on an external box body and comprises a base and a protective plate, wherein the base is used for being connected with the box body, the protective plate is arranged on the base, and two ends of the base in the horizontal direction are respectively used for being connected with the box body and the protective plate; the camera is characterized in that through holes for bolts to penetrate through are formed in the two ends of the base, mounting holes are formed in the positions, corresponding to the through holes, of the guard plates and are blind holes, and flexible packages are arranged on the other sides, opposite to the mounting holes, of the guard plates and are in contact with the camera.

As a further improvement of the invention, one end of the base, which is opposite to the guard plate, is provided with a groove, the groove is matched with the guard plate, the through hole is positioned at the bottom position of the groove, the positions of the base, which are close to the two sides of the groove, are respectively provided with an arc-shaped panel, the arc-shaped panel and the end surface of the base form a U-shaped groove, the camera is provided with a positioning block corresponding to the U-shaped groove, and when the camera is arranged on the bracket, the positioning block is positioned in the U-shaped groove.

As a further improvement of the invention, an inclined plane is further arranged on the end surface of the base opposite to the guard plate, the inclined plane is inclined downwards from the joint where the end surface of the base is connected with the arc-shaped panel and faces the end surface of the base back to one end of the arc-shaped panel, a threaded hole is arranged on the inclined plane, and the camera is installed on the inclined plane through a bolt and the threaded hole in a matching manner.

As a further improvement of the invention, the guard plate is further provided with a cover plate which is positioned above the camera, and the cover plate and the guard plate form an L shape; one side of the cover plate, which faces the camera, is provided with a flexible wrapping object, and the flexible wrapping object is in contact with the camera; the flexible wrappage on the cover plate and the flexible wrappage on the guard plate are both provided with arc invaginations.

The invention has the beneficial effects that:

1. the monitoring unit identifies and stores the operators, so that whether the current operators are the operators with the operation authority or not can be ensured, and the situation that all the operators can operate to cause disordered management of the water supply system is avoided.

2. The touch unit is used for interaction, the operation scheme of the current operator can be acquired, then the control unit executes the control action, the switching effect of the water supply waterway can be generated by switching the water supply unit, interruption and opening of water supply can be generated, and the size of water supply can be adjusted.

3. The water flow detection unit is arranged on the water inlet pipe and the water outlet pipe, so that the water flow detection unit is more convenient to install, and is not arranged on the water supply unit.

4. The control unit can receive the detection result of the water flow detection unit, and then analyzes the current water supply mode.

5. The safety can be improved, unsafe factors can be reduced, and the management of a water supply system can be strengthened.

Drawings

FIG. 1 is a block diagram of the elements of the present invention;

FIG. 2 is a block diagram of the present invention;

FIG. 3 is a schematic view of a monitoring unit according to the present invention;

FIG. 4 is a schematic view of a base structure of the monitoring unit of the present invention;

fig. 5 is a schematic view of the guard plate structure of the monitoring unit of the present invention.

Reference numerals: 100. a monitoring unit; 101. a camera; 102. a support; 103. a base; 104. a guard plate; 105. a through hole; 106. mounting holes; 107. a groove; 108. an arcuate panel; 109. a U-shaped groove; 110. positioning blocks; 111. a bevel; 112. a threaded hole; 113. a cover plate; 114. the arc is sunken; 200. a touch unit; 300. a control unit; 400. a water supply unit; 500. a water flow detection unit; 600. and (4) cloud.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

As shown with reference to figures 1-5,

an intelligent integrated direct connection water supply system, comprising:

the monitoring unit 100 is used for identifying and uploading information of operators stored in the cloud 600;

a touch unit 200 for providing interactive control;

the control unit 300 is in communication connection with the touch unit 200 and the monitoring unit 100, and executes control actions according to signals provided by the touch unit 200 and the monitoring unit 100;

the water supply unit 400 is used for connecting the water inlet pipe and the water outlet pipe and controlling the communication of the water inlet pipe and the water outlet pipe through a valve;

the number of the water supply units 400 is at least two, and the two water supply units 400 are connected with the same water inlet pipe and water outlet pipe;

a water flow detection unit 500 disposed on the water inlet pipe and the water outlet pipe and both in communication with the control unit 300 to transmit a water flow detection signal;

the control unit 300 controls the valve of the water supply unit 400 to be turned on or off according to the water flow detection signal.

In the above scheme, the detection unit may adopt a camera 101, an RFID identifier, etc., the touch unit 200 adopts a touch screen to provide interaction, and the control unit 300 adopts an integrated circuit with a control function, which is composed of a controller or a control chip and its peripheral circuits; the water supply unit 400 is a switching assembly having a valve capable of supplying water or cutting off water by switching an on/off state of the valve; the water flow detecting unit 500 is a sensor for detecting water flow in the water inlet pipe and the water outlet pipe, and may be a deformation principle sensor formed by a strain gauge or a rotary sensor using an impeller rotation method.

Based on the above setting, the operation principle will be explained below. Firstly, whether the current operator is a person with operation authority or not can be ensured by identifying and storing the operator through the monitoring unit 100, and the situation that all persons can operate to cause disordered management of a water supply system is avoided. The touch unit 200 is used for interaction, so that the current operation scheme of the operator can be obtained, which is equivalent to that the touch unit 200 obtains the operation instruction of the operator through a touch interaction mode, and then the control unit 300 executes a control action, specifically, the control action may be represented as electric control of the control unit 300 on a valve, for example, control on an electromagnetic valve. The valve is located on the water supply unit 400, and the switching effect of the water supply waterway can be generated by switching the water supply unit 400, and the water supply can be interrupted and opened, and the size of the water supply can be adjusted. It is also possible to detect the flow of water by the water flow detecting unit 500, and of course, the water flow detecting unit 500 is provided on the water inlet pipe and the water outlet pipe, not on the water supply unit 400, for convenience of installation. The control unit 300 can receive the detection result of the water flow detection unit 500, and further analyze the current water supply mode.

In order to provide a detection effect with a minimum cost, the number of the water flow detection units 500 is two, and the two water flow detection units are respectively disposed between connection nodes of the two water supply units 400 on the water inlet pipe and between connection nodes of the two water supply units 400 on the water outlet pipe and the water outlet pipe.

Based on the above scheme, as shown in fig. 2, since the two water supply units 400 are both connected to the same water inlet pipe and water outlet pipe, at this time, an interval is inevitably provided on the water inlet pipe or the water outlet pipe, based on the interval, for example, in the scheme in fig. 2, when the water supply unit 400 on the left side is opened, water flows into the water supply unit 400, the water flow detection unit 500 of the water inlet pipe does not detect the water flow passing, and when the water flows through the water supply unit 400, the water flow passes through the water outlet pipe, the water flow detection unit 500 can detect the water flow, and the water supply of the water supply unit 400 on the left side can be obtained by the judgment of the two water flow detection units 500; if the water flow detecting units 500 detecting the water flow are located in opposite directions, the right water supply unit 400 is supplied with water, and if both are detected, it is said that the water is supplied simultaneously from left to right. This scheme maintains the effect of easy installation and also enables simultaneous detection of two water supply units 400 with the minimum number of water flow detection units 500.

In addition, the scheme provides a next operation mode, when the control unit 300 receives the water flow detection signal and the touch unit 200 interactively transmits the common water supply mode to the control unit 300, the control unit 300 detects whether the two valves are simultaneously opened, and if so, one of the two valves is closed.

Supply water through the mode of ordinary water supply, control the water supply size, only need open one of them water supply unit 400, another water supply unit 400 keeps the off-state simultaneously, cooperates rivers detecting element 500, can detect current water supply mode to judge whether need carry out the switching after detecting and finishing, if need, then can switch water supply mode.

In addition, it is worth mentioning that based on the above scheme, the current water supply condition of the water supply unit 400 can be judged through the water flow detection signal when the normal water supply is started, whether the water supply is normal or not can be checked, if the water supply is abnormal, the water supply unit 400 can be switched to another water supply unit 400 for normal water supply, and therefore the scheme also has the effect of automatically identifying and switching the abnormal water supply unit 400. Therefore, the effect of stable water supply is also provided.

Similarly, the above scheme describes switching to a normal water supply mode, and a mode for switching to a maximum water supply mode is also provided below, where when the control unit 300 receives the water flow detection signal and the touch unit 200 interactively transmits the maximum water supply mode to the control unit 300, the control unit 300 detects whether two valves are simultaneously opened, and if not, the two valves are simultaneously opened.

If under this scheme, the control unit 300 can also detect when the maximum water supply mode is activated, check whether it is confirmed that both the water flow detection units 500 have detected water flow, otherwise, determine that maintenance is required. And further prompts the operator to perform maintenance actions.

Specifically, the detection unit in the present scheme is adopted as the camera 101, and has a camera function for capturing the influence of the current operator.

The monitoring unit 100 and the control unit 300 cooperate to identify operator information and detect whether the operator is a docket currently; the monitoring unit 100 is also in direct communication with the cloud 600 to upload the acquired operator information to the cloud 600 for storage; when the control unit 300 cooperates with the monitoring unit 100 to successfully identify the recording personnel, the control unit 300 sends a recorded mark to the cloud 600, and after receiving the recorded mark, the cloud 600 sends the image mark, sent to the cloud 600 by the monitoring unit 100, to be recorded; otherwise, the record is marked as being unregistered, and the cloud 600 classifies the recorded record and the unregistered record.

The recognition of the monitoring unit 100 and the control unit 300 can recognize whether the operator is a person who has already been recorded, and if the operator is not recorded, the operator is not given an operation command. At this time, the security can be improved, and in addition, the monitoring unit 100 can also directly upload the recorded image to the cloud 600 for storage, store the image, and subsequently obtain the tracking data, thereby improving the security. In addition, the control unit 300 can also send the recorded marks to the cloud 600 through the control unit 300 when the control unit 300 successfully identifies the images, and the cloud 600 marks the images received at the same time according to the marks, so that compared with the marking mode of focusing on the control unit 300 for processing, the marking mode has the advantages of being higher in safety, reducing the cracking probability, and improving the cracking difficulty by marking the cloud 600. After the cloud 600 is classified, the operators can call and check conveniently, the current illegal operators can be found quickly, and management is facilitated.

In an improved scheme, the cloud 600 receives operator information sent by the monitoring unit 100, checks recorded personnel which are stored and marked before, feeds back recorded marks to the control unit 300 if matching items exist, the control unit 300 checks matching results of the cloud 600 and self identification results, the touch unit 200 starts an interaction function if the matching results are consistent, and enters the cloud 600 for manual identification if the matching results are different, and the identification is distinguished by workers.

Firstly, the scene considered by the improved scheme is that the cloud 600 is already recorded, then the identification is carried out by matching with the control unit 300, and the double identification and correction modes are audited, so that the safety can be further improved. When the content which cannot be matched correctly can be checked manually through the cloud 600.

Because the monitoring unit 100 that this scheme adopted is camera 101, consequently camera 101 and this system cooperation need carry out outside installation, and this scheme combines the mounting means of camera 101 and system to explain, mainly cooperates the box to assemble, and improves the stability of its installation.

The monitoring unit 100 comprises a camera 101 and a bracket 102 for mounting the camera 101; the bracket 102 is arranged on an external box body, the bracket 102 comprises a base 103 used for being connected with the box body and a guard plate 104 arranged on the base 103, and two ends of the base 103 in the horizontal direction are respectively used for being connected with the box body and the guard plate 104; both ends of the base 103 are provided with through holes 105 for bolts to pass through, the guard plate 104 is provided with mounting holes 106 corresponding to the through holes 105, the mounting holes 106 are blind holes, and the other side of the guard plate 104 opposite to the mounting holes 106 is provided with a flexible wrapping object which is in contact with the camera 101.

Wherein support 102 is used for installing with the box, and camera 101 installs on support 102 to utilize flexible parcel to wrap up camera 101, the vibrations that appear when avoiding water supply unit 400 to supply water influence camera 101. Since the water supply unit 400 is easily vibrated in the pipe when supplying water, and the water supply unit 400 is generally equipped with a water supply pump, severe vibration is generated in case of the activation of the water supply pump, and the vibration easily affects the normal operation of the camera 101. The base 103 and the box body are directly matched with the bolts through the through holes 105, then are connected through the mounting holes 106 on the protective plate 104, and the base 103 is assembled through the bolts and the protective plate 104 in a threaded connection mode.

In order to improve the assembling strength between the protective plate 104 and the base 103 and improve the assembling strength between the camera 101 and the base 103, one end of the base 103 opposite to the protective plate 104 is provided with a groove 107, the groove 107 is matched with the protective plate 104, the through hole 105 is positioned at the bottom position of the groove 107, the two side positions of the base 103 close to the groove 107 are respectively provided with an arc-shaped panel 108, the arc-shaped panels 108 and the end surface of the base 103 form a U-shaped groove 109, the camera 101 is provided with a positioning block 110 corresponding to the U-shaped groove 109, and when the camera 101 is installed on the bracket 102, the positioning block 110 is positioned in the U-shaped groove 109.

Through the cooperation of recess 107 and backplate 104, can restrict the rotation of backplate 104, avoid backplate 104 not hard up to lead to rotating and cause the influence to the work of camera 101 under the vibrations effect. In addition, the U-shaped groove 109 can provide a plugging space, a positioning block 110 matched with the U-shaped groove 109 on the camera 101 is embedded, preferably, the positioning block 110 is matched with the U-shaped groove 109 in shape and can be embedded in a matched mode, and the U-shaped groove 109 has a certain deformation effect, so that the installation is more convenient.

With the above structure, the end surface of the base 103 opposite to the guard plate 104 is further provided with an inclined surface 111, the inclined surface 111 is inclined downwards from the connection position where the end surface of the base 103 is connected with the arc-shaped panel 108 and faces away from one end of the arc-shaped panel 108 towards the end surface of the base 103, the inclined surface 111 is provided with a threaded hole 112, and the camera 101 is installed on the inclined surface 111 through a bolt and the threaded hole 112 in a matching manner.

Utilize inclined plane 111 cooperation bolt to install, compare and directly adopt the plane say, can form the clamping effect with U type groove 109 to improve fixed stability, can let the bolt produce the fixed effect of horizontal and vertical direction moreover, the fixed action is stronger. In addition, since the U-shaped groove 109 is adapted to the shape of the positioning block 110, and actually has a guiding function, the positioning block 110 can also position the position where the camera 101 and the inclined surface 111 are mounted, and the camera can be more easily attached to the inclined surface 111.

In order to further improve the anti-seismic effect, the protection plate 104 is further provided with a cover plate 113, the cover plate 113 is located above the camera 101, and the cover plate 113 and the protection plate 104 form an L shape; a flexible wrapper is arranged on one side of the cover plate 113 facing the camera 101, and the flexible wrapper is in contact with the camera 101; both the flexible wrap on the cover plate 113 and the flexible wrap on the cover plate 104 are provided with arcuate invaginations 114.

The setting of cover plate 113 can be dustproof on the one hand, places camera 101 top ash falling, and the camera lens to camera 101 produces the influence. On the other hand can further wrap up camera 101, makes camera 101's vertical antidetonation effect better, and the backplate 104 of L type reduces one step of installation from taking cover plate 113. The engagement of the arcuate indentation 114 can result in better encapsidation of the camera head 101. Compared with the traditional way of fixing by one rod, the installation mode can greatly reduce the shaking.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.