CN108111823B - Network monitoring system - Google Patents

Abstract

The present invention provides a network monitoring system, which includes a display device and at least one network camera. The display device includes a screen, a display computing device and a processing device. The display computing device receives the local video and the monitoring video and selectively transmits them to the screen for display. The processing device processes the monitoring video and transmits it to the display computing device. A network camera captures an area to generate surveillance video. Determine whether a notification message is generated according to the monitoring video and a preset comparison condition. The processing device generates a warning signal according to the notification message and the warning rule.

Description

network monitoring system

technical field

The present invention relates to a network monitoring system; in particular, the present invention relates to a network monitoring system integrating a display device.

Background technique

With the rising awareness of environmental safety, the demand for monitoring equipment is increasing. Taking office premises as an example, the key points of safety management are the entrances and exits of gates, storage locations of important materials, and parking lots. Although the monitoring equipment in the prior art can issue an alarm sound when detecting abnormal conditions, it may not be able to effectively notify the management personnel. For example, managers are too far away from monitoring equipment to detect abnormal conditions. Another example is when managers use a computer or a player to connect a monitoring device to a non-monitoring screen, when the monitoring device captures an abnormal situation, it is easy to miss the abnormal situation. Even if managers use the monitoring screen, there may be too many monitoring screens that require attention, and it may not be possible to detect abnormal conditions in time. Therefore, the monitoring equipment of the prior art still needs to be improved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a network monitoring system, which can generate different warning methods according to the type of abnormal event and the activity of the user on the display device.

In order to achieve the above object, the present invention provides a network monitoring system, the network monitoring system includes: a display device and at least one network camera, the display device includes: a screen; a display computing device for receiving local video and monitoring video and selectively transmitted to the screen display; and a processing device to process the surveillance video and transmit it to the display computing device; and at least one network camera to capture an area to generate the surveillance video; wherein, according to the surveillance video and The preset comparison condition determines whether a notification message is generated, and the processing device generates a warning signal according to the notification message and the warning rule.

Preferably, the notification message is generated by the at least one network camera according to the surveillance video and the comparison condition, and the notification message includes a plurality of priority level notifications.

Preferably, the notification message is generated by the processing device according to the monitoring video and the comparison condition, and the notification message selectively includes a high-priority notification and a low-priority notification.

Preferably, the warning rule includes a corresponding relationship between usage context and different priority levels of the notification message, the usage context includes a combination of the computing load of the display computing device and whether the user is in front of the display device, the processing device is based on The alert rule generates an alert signal having a configuration corresponding to the corresponding relationship.

Preferably, the display device includes a sensing device, which senses whether a user is in front of the display device to generate a sensing result, and determines a usage situation according to the sensing result.

Preferably, the display computing device generates a local screen and a monitoring screen according to the local video and the monitoring video, the warning signal includes a screenshot request, and the display computing device generates a screenshot from the monitoring video according to the screenshot request, and A composite picture is formed having the screenshot picture combined with the local picture or the monitoring picture, and the screen displays the composite picture.

Preferably, the notification message selectively includes a high-priority notification and a low-priority notification, and the screenshot request includes a transparency adjustment corresponding to different priority levels, so that the transparency of the screenshot image is different from that of the local image and the screenshot. Monitor the transparency of the screen.

Preferably, the network monitoring system further includes an input device connected to a display device, the input device has a switching service, and when the switching service is triggered, the display computing device switches and displays on the local screen, the monitoring screen or the composite screen .

Preferably, the display computing device generates a local screen and a monitoring screen according to the local video and the monitoring video, the processing device includes a screen controller, the warning signal includes a text prompt request, and the screen controller is based on the text prompt request. In order to generate a warning text, the display computing device receives the warning text sent from the screen controller, and the screen selectively displays the local screen and the monitoring screen as a display screen and displays the superimposed on the display screen. Warning text.

Preferably, the notification message includes a high-priority notification and a low-priority notification, the display device includes a sound controller connected to a loudspeaker device, the warning signal includes a voice prompt request, and the voice prompt request corresponds to different priority levels includes a warning. Sound adjustment, the sound controller receives the sound prompt request to generate different warning sounds on the loudspeaker device; and/or the display device includes a light source controller connected to a peripheral light source, the warning signal includes a light-emitting prompt request, and the light-emitting prompt request Corresponding to different priority levels, warning light adjustment is included, and the light source controller receives the lighting prompt request to generate different warning lights for the peripheral light source.

Compared with the prior art, the network monitoring system provided by the present invention can generate different warning methods according to the type of abnormal situation and the user's activity situation on the display device, so as to achieve the effect of immediate warning

Description of drawings

FIG. 1 is a schematic diagram of an embodiment of a network monitoring system of the present invention.

FIG. 2 is a schematic diagram of an embodiment of a display device.

FIG. 3 is a schematic diagram of another embodiment of a display device.

4, 5 and 6 are schematic diagrams of different warning methods.

FIG. 7 is a schematic diagram of an embodiment of a display device.

8 and 9 are schematic diagrams of different warning methods.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are given in conjunction with the embodiments.

The present invention provides a network monitoring system, which can issue a warning signal through a user's display device and achieve real-time notification according to the user's usage situation. FIG. 1 is a schematic diagram of an embodiment of a network monitoring system 10 of the present invention. As shown in FIG. 1 , the network monitoring system 10 may include a display device 100 , an image providing unit 101 , a router 200 and one or more network cameras 300 . The image providing unit 101 is connected to the display device 100 and can transmit local video to the display device 100 . On the other hand, a plurality of network cameras 300 are connected to the router 200 , and the router 200 is connected to the display device 100 . Different network cameras 300 can respectively capture different areas to generate surveillance video. Each network camera 300 transmits its surveillance video to the display device 100 through the router 200, such as the gate entrance, the parking lot, and the like. The surveillance video is transmitted to the display device 100 for the user to view.

The display device 100 can convert the network signal sent by the network camera 300 into monitoring video. The user can view a plurality of monitoring images on the display device 100, and the present invention can also convert the network signal into the monitoring video first, and then input it through the video and audio terminals (such as HDMI interface) of the display device 100, which can be used in some situations. A single network camera 300 can directly transmit the received signal to the display device 100 without the router 200 at this time. The display device 100 can additionally have a plurality of video and audio input terminals, and one of the input terminals can be selected to be connected to the video providing unit 101 (such as a DVD player, a PC, or a game console). Use the functions of the monitor.

FIG. 2 is a schematic diagram of an embodiment of the display device 100 . As shown in FIG. 2 , the display device 100 includes a screen 103 , a processing device 110 and a display computing device 120 . The display device 100 can simultaneously receive the local video V1 and the monitoring video V2 through an external interface (such as HDMI, VGA or RJ45), and then the user selects one of the videos as the display screen and displays it on the screen. The processing device 110 receives the monitoring video V2 and determines a notification message according to the comparison and analysis of the images, the content of which includes the priority level and the type of abnormal condition. In addition, the processing device 110 also determines a warning signal A according to the notification message and a warning rule; the display computing device 120 can be a scaler, which can receive the local video V1, the monitoring video V2 and the warning signal A, and determine the image to be displayed on the screen 103 according to the warning signal A.

In other examples, the display device 100 can be a tablet computer or a multifunction computer (All In One PC), and the local video V1 can be generated by the display device 100 . In other words, a display device integrating an image providing unit can be used. The processing device 110 processes the monitoring video V2 and transmits it to the display computing device 120 . For example, the processing device 110 decodes the surveillance video V2 and combines multiple surveillance videos V2 from different network cameras 300 . It is determined whether a notification message is generated according to the monitoring video V2 and a preset comparison condition.

In one embodiment, the notification message is generated by the processing device 110 according to the comparison condition. The aforementioned comparison conditions are, for example, abnormal conditions such as intrusion of people or animals, and shielding of the camera lens. When the processing device 110 finds abnormal situations such as personnel intrusion, camera shielding or animal intrusion after image processing and comparison of the signals, a notification message is generated. The processing device 110 generates the warning signal A according to the notification message and the warning rule. The alert rule may include, for example, the corresponding relationship between the usage context and the notification message. In other words, the processing device 110 can confirm which abnormal condition is from the notification message, and generate the warning signal A according to the warning rule.

Please refer to the example in Table 1. The alert rules define two usage scenarios of the monitor screen displayed on the screen and the local screen displayed on the screen. The notification message can have a priority level and an abnormal status, such as: someone breaking in There are three abnormal situations: entry, blocking the camera and animal intrusion. The first two anomalous conditions have a high priority level, while the animal intrusion situation is a low priority level. When an abnormal situation occurs, the warning signal A generated according to the notification message and the warning rule includes an instruction to take a screenshot. The aforementioned priority levels can adjust the differences in the warning effects in the instructions. For example, the screenshot effects (such as color tone, transparency, etc.) produced by abnormal conditions of the same level are the same. The image captured by the network camera 300 in the current situation is captured on the monitor screen with low transparency and then overlaid on the monitor screen, and the low priority level can be captured on the monitor screen or the local screen with high transparency after being captured to avoid interference. The user is watching the screen they are watching. In another embodiment, in the case of a low priority level, the text "animal intrusion" can be displayed around the screen instead of the screenshot.

On the other hand, the usage context may include, for example, displaying the computing load of the computing device. In other words, the aforementioned two usage scenarios can be distinguished according to the computing load of the display computing device. For example, since the display computing device 120 is performing a relatively large amount of image processing or computing when displaying the local video, the computing load when displaying the monitor screen is smaller than that when displaying the local screen. Therefore, it is judged that the user is watching the video. In the case of local video, as shown in Table 1, under the abnormal situation of animal intrusion, a high-transparency screenshot is used to avoid affecting the user's concentration too much. A screenshot window with medium transparency; in some cases, even if the local video is displayed, the computing load may have different levels. In this state, the alert rule can set different rules according to different computing loads, for example, adjust the transparency of the screenshot corresponding to the computing load.

(Table I)

It should be added that the above screenshots refer to the screenshots generated according to the surveillance video. Returning to FIG. 2 , specifically, the display computing device generates the local picture and the monitoring picture according to the local video and the monitoring video. The warning signal A may include a screenshot request. The display computing device generates a screenshot image from the monitoring video according to the screenshot request, and forms a composite image that combines a screenshot image on the screen when displaying the local image or the monitoring image to remind the user that an abnormality occurs. situation.

FIG. 3 is a schematic diagram of another embodiment of the display device 100 . As shown in FIG. 3 , the display device 100 includes a processing device 110 and a display computing device 120 . The display computing device 120 receives the local video V1 and the monitoring video V2. The processing device 110 processes the monitoring video V2 and transmits it to the display computing device 120 . It is determined whether a notification message is generated according to the monitoring video V2 and according to a preset comparison condition.

In one embodiment, the notification message S is generated by the network camera 300 performing image processing on the captured image and according to the comparison condition. For example, the network camera 300 finds an abnormal condition after image recognition, and accordingly generates a notification message S and transmits the monitoring video V2 to the display device 100 at the same time. As shown in FIG. 3 , the processing device 110 includes an event processor 112 configured to parse the notification message and generate an alert signal A according to the notification message and the alert rule.

Please refer to Table 2. The warning rules can include two usage scenarios: displaying the surveillance screen and displaying the local screen. The notification message can have priority levels and abnormal situations, such as: personnel intrusion, camera shielding, and animal intrusion. an abnormal state of affairs. These three abnormal conditions have different priority levels. When an abnormal situation occurs, screenshots of different effects will be produced according to the alert rules. For example, an abnormal situation with a high level produces a screenshot effect with low transparency or no transparency reduction, so that the user can clearly perceive that an abnormal situation has occurred, an abnormal situation with a medium level produces a screenshot effect with medium transparency, and an abnormal situation with a low level produces a screenshot effect. A high-transparency screenshot effect to avoid obscuring the screen the user is currently viewing.

(Table II)

Taking Figure 3 and Table 2 as an example, the warning signal A includes a screenshot request. The screenshot request corresponding to different priority levels includes transparency adjustment, so that the transparency of the screenshot image is different from the transparency of the local image and the monitoring image. For example, in Table 2, an abnormal condition with a high level can correspondingly generate a screenshot with the lowest transparency, so that the user can be clearly reminded that an abnormal event occurs. The display computing device 120 generates a screenshot image from the monitoring video V2 according to the screenshot request, and forms a composite image in which the screenshot image is combined with the local image or the monitoring image.

4, 5 and 6 are schematic diagrams of different warning methods. As shown in FIG. 4 , the user is testing the game, and the display computing device displays the local screen P1 on the display device 100 according to the local video. When someone breaks in, the processing device generates a warning signal A. The display computing device generates a screenshot image Q1 with low transparency (represented by dots) from the monitoring video according to the screenshot request. In the embodiment of FIG. 4 , a composite screen is formed by the screenshot screen Q1 and the local screen P1. The screenshot screen Q1 is formed on the local screen P1 in a superimposed manner. In other examples, the transparency of the screenshot screen Q1 and the local screen P1 may be the same.

As shown in FIG. 5 , the user is testing the game, and the display computing device displays the local screen P1 on the display device 100 according to the local video. When a lens is blocked, the processing device generates a warning signal A. According to the screenshot request, the display computing device generates a screenshot image Q1 with medium transparency (indicated by diagonal lines) from the monitoring video. In the embodiment of FIG. 5 , a composite screen is formed by the screenshot screen Q1 and the local screen P1. The screenshot screen Q1 is formed on the local screen P1 in a superimposed manner, and the transparency of the screenshot screen Q1 and the local screen P1 is different. Since the user is testing the game, the computing load is high. When an abnormal situation occurs, the user may also want to The local screen P1 can be seen, so the transparency can be increased to display the screenshot screen Q1, so that the user can still see the local screen P1.

As shown in FIG. 6 , when the user is viewing the monitoring screen, the display computing device displays the monitoring screen (P21, P22, P23, P24) on the display device 100 according to the monitoring video. When there is an animal intrusion (such as the monitoring screen P23), the processing device generates a warning signal A. The display computing device generates a screenshot image Q1 from the monitoring video according to the screenshot request. In the embodiment of FIG. 6 , a composite screen is formed by the screenshot screen Q1 and the monitoring screen (P21, P22, P23, P24). The screenshot screen Q1 is superimposed on the monitoring screen (P21, P22, P23, P24). The transparency of the screenshot image Q1 in FIG. 6 is higher than that of the screenshot images in FIGS. 4 and 5 .

FIG. 7 is a schematic diagram of another embodiment of the display device 100 . As shown in FIG. 7 , in addition to the processing device 110 and the display computing device 120 , the display device 100 also includes a screen camera 130 and a Bluetooth receiving device 140 . The screen camera 130 and the Bluetooth receiving device 140 are used as sensing devices to determine whether the user is in front of the display device 100 . The processing device 110 processes the monitoring video V2 and transmits it to the display computing device 120 . The display computing device 120 receives the local video V1 and the monitoring video V2, and the user selects one of the videos to display on the screen 103. It is determined whether a notification message is generated according to the monitoring video V2 and according to a preset comparison condition. In addition, the processing device 110 includes an event processor 112 configured to parse the notification message and generate an alert signal A according to the notification message and the alert rule.

In one embodiment, the screen camera 130 may face the same direction as the display surface, for example, so as to know whether the user is in front of the display device. For example, whether the user is within 1 meter in front of the display device is determined by the size of the captured image. The Bluetooth receiving device 140 can be, for example, a positioning signal receiving device using Bluetooth low energy technology, which can detect the Bluetooth signal of a user's mobile phone or a wearable device. Thereby, it is judged whether the user is in front of the display device. In general, the sensing device is configured to sense whether a user is in front of the display device to generate a sensing result, and determine a usage context and an alert rule according to the sensing result.

In addition, as shown in FIG. 7 , the network monitoring system includes an input device 400 in addition to the display device 100 . The input device 400 , such as a keyboard or a mouse, is connected to the display device 100 . The input device 400 has a switching service. When the switching service is triggered, the display computing device 120 switches and displays on the local screen, the monitoring screen or the composite screen. The switching service may be, for example, Display Data Channel/Command Interface (DDC/CI), which is a communication protocol that can change the way the display device displays information through a keyboard or a mouse. For example, a shortcut key can be set on the keyboard according to the switching service. When the user leaves the display device and is informed that there is an abnormal situation, the user can trigger the switching service through key operation before returning to the display device, so that the display computing device can automatically The local screen is switched to the composite screen.

In other examples, when the user performs other tasks in front of the display device, a pop-up screenshot screen informs the user that there is an abnormal situation. The user can trigger the switching service through a key operation, so that the display computing device superimposes the composite image on the local computer. The screenshot screen on the screen is canceled and returns to the local screen. Press the shortcut key again to switch to the screenshot screen and monitoring screen displayed in the way of picture-in-picture. In this way, it is possible to quickly switch to the viewing mode desired by the user.

Please refer to Table 3. As shown in Table 3, there are three usage scenarios defined in the alert rules: displaying the surveillance screen, displaying the local screen, and the user leaving the display device, and defining three types of intrusion by personnel, blocking the camera, and intrusion by animals abnormal condition. These three abnormal conditions have different priority levels. Generally speaking, the alert rule includes a combination of various correspondences, such as the correspondence between the notification message and the computing load of the display computing device, and the correspondence between the notification message and whether the user leaves the display device. When an abnormal situation occurs, according to the warning rules, for example, screenshots or warning sounds with different effects will be generated.

Further, the alert rule can set at least one alert action for each usage situation and abnormal condition, for example, set a combination of different alert actions. As shown in Table 3, for the usage context of viewing the monitoring screen in the alert rule, four alert actions (screenshot, text, alert sound, and alert light) or one alert action (screenshot) are set at different priority levels. For the usage situation of viewing the screen of the local machine, three warning actions (screenshot, text and warning light) or one warning action (text) are respectively set at different priority levels. For the usage situation of leaving the display device, two warning actions (warning sound and warning light) are set for high level and medium level, and one warning action (warning sound) is correspondingly set for low level.

For example, the different warning tones in Table 3 can be set as: the warning sound A1 is a continuous short sound with a high volume, the warning sound A2 is three long sounds with a medium volume, and the warning sound A3 is a voice broadcast. The aforementioned priority level refers to the difference of warning effects. For example, when a user is viewing a monitoring screen, a high-level abnormal condition produces low-transparency screenshots, text, warning sound A1, warning light B1 and other effects. When leaving the display device, a warning sound A2 and a warning light B2 are correspondingly generated for the abnormal condition with the level of medium.

In addition, the different warning lights in Table 3 can be set, for example, as: the warning light B1 is a flashing red light, and the warning light B2 is a flashing green light. In addition to being separated by light color, the warning light can also be set to different flashing frequencies.

(Table 3)

Taking FIG. 7 and Table 3 as an example, the warning signal A includes a voice prompt request. As shown in FIG. 7 , the display device 100 includes a sound controller 150 connected to a sound amplification device 160 . Alert signal A includes a voice prompt request. The sound prompt request includes warning sound adjustment corresponding to different priority levels. The sound controller 150 receives the sound prompt request so that the loudspeaker device 160 can generate different warning sounds. In addition, the alert signal A may include a screenshot request. Corresponding to different abnormal conditions, the warning signal A generated by the processing device 110 according to the warning rule may be a warning sound or a combination of the warning sound and other warning actions.

In addition, taking FIG. 7 and Table 3 as examples, the warning signal A includes a light-emitting prompt request. As shown in FIG. 7 , the display device 100 includes a light source controller 170 connected to a peripheral light source 180 . The warning signal A contains a light-emitting prompt request. The light-emitting prompt request includes warning light adjustment corresponding to different priority levels. The light source controller 170 receives the lighting prompt request to generate different warning lights from the peripheral light source 180 . In addition, the warning signal A may include a voice prompt request or a screenshot request. Corresponding to different abnormal conditions, the warning signal A generated by the processing device 110 according to the warning rule may be a warning sound combined with a warning light, or a warning sound alone.

For text alerts, for example, the alert signal also includes a text prompt request. Referring to FIG. 7 and Table 3, the processing device 110 includes a screen controller 114 . Warning signal A contains a text prompt request. The text prompt request can generate corresponding event descriptions corresponding to different priority levels. The screen controller 114 generates warning text according to the text prompt request to describe the detected abnormal condition. The display computing device 120 receives the warning text sent from the screen controller 114, and forms a text prompt screen with the warning text superimposed on the local screen or the monitoring screen. For example, when viewing a surveillance screen, a high-level abnormal condition (person intrusion) can generate a warning text of "person intrusion" and superimpose it on the surveillance screen where the intrusion is captured.

As mentioned above, the alert rule setting has a combination of different alert actions. In other words, the warning signal A may include a text prompt request, a voice prompt request, a light prompt request and/or a screenshot request. Corresponding to different abnormal conditions, the warning signal A generated by the processing device 110 according to the warning rule may be a screenshot, text, warning sound and warning light generated together, or only one of the warning actions is generated. In general, the processing device 110 can generate an alert signal A having a configuration corresponding to the corresponding relationship (ie, the correspondence between the notification message and the usage context) according to the alert rule. In other words, the alert signal A has different configurations including at least one alert action, as shown in Table 3 above. For example, when the processing device 110 detects that the display computing device 120 is low in computation and detects a notification message with a high corresponding level, the alert signal A generated at this time has the first configuration and includes four alert actions. For another example, when the processing device 110 detects that the user leaves the display device 100 and detects a notification message with a corresponding level of medium, the alert signal A generated at this time has a sixth configuration, including two alert actions.

FIG. 8 is a schematic diagram of another embodiment of the warning mode. As shown in FIG. 8 , the user leaves the display device 100 . When an abnormal situation occurs, the processing device knows that the user has left the display device 100 according to the image captured by the screen camera 130 , and generates a warning signal A according to the warning rule. The display computing device generates a warning sound through the loudspeaker device 160 according to the voice prompt request. This allows the user to immediately detect abnormal conditions.

FIG. 9 is a schematic diagram of another embodiment of the warning mode. As shown in FIG. 9 , the user is testing the game, and the display computing device displays the local screen P1 on the display device 100 according to the local video. When someone breaks in, the processing device generates a warning signal A. The display computing device generates a screenshot image Q1 from the monitoring video according to the screenshot request. At the same time, according to the text prompt request, the warning text W1 and the serial number of the network camera are displayed on the screenshot screen Q1. In addition, according to the voice prompt request and the light-emitting prompt request, the loudspeaker device 160 emits a warning sound, and the peripheral light source 180 emits a warning light.

In the embodiment of FIG. 9 , a composite screen is formed by the screenshot screen Q1 and the local screen P1. The screenshot screen Q1 is formed on the local screen P1 in a divided display manner. In addition, the peripheral light source 180 is disposed in the same direction as the display surface, but is not limited thereto. In other embodiments, the peripheral light source 180 is disposed in a different direction from the display surface, for example, on the back of the display surface. In this way, when the user leaves the display device 100, the user can immediately check the abnormal situation. In general, with the network monitoring system of the present invention, different warning methods can be generated according to the type of abnormal situation and the user's activity situation on the display device, so as to achieve the effect of immediate warning.

The present invention has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention belong to the scope of patent protection of the present invention.

Claims (10)

1. a network monitoring system, is characterized in that, comprises: Display device, including: screen; a display computing device that receives local video and surveillance video and selectively transmits it to the screen for display; and a processing device that processes the surveillance video and transmits it to the display computing device; and at least one network camera to capture an area to generate the surveillance video; Wherein, it is determined whether a notification message is generated according to the monitoring video and a preset comparison condition, and the processing device generates a warning signal according to the notification message and the warning rule; the notification message includes a plurality of priority level notifications, and the warning rule includes usage context and The corresponding relationship between different priority levels of the notification message, the usage context includes the computing load of the display computing device, the usage context is divided into a first usage context and a second usage context according to the computing load, and the processing device An alert signal corresponding to the corresponding relationship is generated according to the alert rule, and under the same priority level, the first usage context and the second usage context correspond to different alert signals. 2 . The network monitoring system of claim 1 , wherein the notification message is generated by the at least one network camera according to the monitoring video and the comparison condition. 3 . 3 . The network monitoring system of claim 1 , wherein the notification message is generated by the processing device according to the monitoring video and the comparison condition, and the plurality of priority notifications selectively include high-level notifications. 4 . Priority notification and low priority notification. 4 . The network monitoring system of claim 3 , wherein the usage context includes a combination of the computing load of the display computing device and whether the user is in front of the display device, and the processing device generates the warning rule according to the warning rule. 5 . There is a warning signal configured corresponding to the corresponding relationship. 5 . The network monitoring system of claim 4 , wherein the display device comprises a sensing device, which senses whether a user is in front of the display device to generate a sensing result, and decides to use the sensing result according to the sensing result. 6 . situation. 6 . The network monitoring system of claim 1 , wherein the display computing device generates a local screen and a monitoring screen according to the local video and the monitoring video, the warning signal includes a screenshot request, and the display computing device According to the screenshot request, a screenshot image is generated from the surveillance video, and a composite image is formed having the screenshot image combined with the local image or the surveillance image, and the composite image is displayed on the screen. 7 . The network monitoring system of claim 6 , wherein the plurality of priority notifications selectively include high-priority notifications and low-priority notifications, and the screenshot request includes transparency adjustment corresponding to different priority levels. 8 . , so that the transparency of the screenshot image is different from the transparency of the local image and the monitoring image. 8 . The network monitoring system of claim 6 , further comprising an input device connected to a display device, the input device has a switching service, and when the switching service is triggered, the display computing device switches and displays on the local machine 8 . picture, the monitoring picture or the composite picture. 9 . The network monitoring system of claim 1 , wherein the display computing device generates a local screen and a monitoring screen according to the local video and the monitoring video, the processing device comprises a screen controller, the warning signal Including a text prompt request, the screen controller generates an alert text according to the text prompt request, the display computing device receives the alert text sent from the screen controller, and the screen selectively displays the local screen and the monitoring screen As a display screen and displaying the warning text superimposed on the display screen. 10 . The network monitoring system of claim 1 , wherein the plurality of priority notifications comprise high priority notifications and low priority notifications, the display device comprises a sound controller connected to a loudspeaker, and the warning signal 11 . Including a voice prompt request, the voice prompt request includes warning sound adjustment corresponding to different priority levels, and the sound controller receives the voice prompt request to generate different warning sounds on the amplifier device; and/or The display device includes a light source controller connected to a peripheral light source, the warning signal includes a lighting prompt request, and the lighting prompt request includes a warning light adjustment corresponding to different priority levels, and the light source controller receives the lighting prompt request to generate a difference in the peripheral light source. warning light.

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