CN216133128U - Safety monitoring device in AR wisdom exhibition room - Google Patents
Safety monitoring device in AR wisdom exhibition room Download PDFInfo
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- CN216133128U CN216133128U CN202122785165.2U CN202122785165U CN216133128U CN 216133128 U CN216133128 U CN 216133128U CN 202122785165 U CN202122785165 U CN 202122785165U CN 216133128 U CN216133128 U CN 216133128U
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Abstract
The utility model relates to a safety monitoring device of an AR intelligent exhibition hall, which comprises a first power supply state monitoring device, a second power supply state monitoring device, a third power supply state monitoring device, a first logic OR gate circuit and an alarm, wherein the first power supply state monitoring device, the second power supply state monitoring device and the third power supply state monitoring device are respectively used for monitoring whether the power supply states of a control device, a display device and AR equipment in the AR intelligent exhibition hall are abnormal or not, the alarm is controlled after the logic OR operation of the first logic OR gate circuit, the alarm can be controlled to alarm as long as at least one power supply state is abnormal, the reliable safety monitoring of the AR intelligent exhibition hall is realized, and the normal operation of the AR intelligent exhibition hall is ensured.
Description
Technical Field
The utility model relates to a safety monitoring device of an AR intelligent exhibition hall.
Background
AR wisdom exhibition room is used for realizing the intelligent show of relevant product, uses more and more extensively. A common AR smart showroom includes: control device, display device and AR equipment. There are also many more intelligent AR intelligent showrooms that include other components in addition to the three components described above. The construction cost of the AR intelligent exhibition hall is usually very high, and because the control device, the display device and the AR equipment are relatively precise instruments, stable and reliable power supply is vital to safe operation of the AR intelligent exhibition hall. The current power supply mode of the AR intelligent exhibition hall is as follows: the control device, the display device and the AR equipment are all independently powered, namely the control device, the display device and the AR equipment are respectively provided with a power supply circuit, and the power supply circuits of the control device, the display device and the AR equipment are all connected with a power supply bus circuit, namely the power supply circuits of the control device, the display device and the AR equipment are connected in parallel. At present, although related power safety control equipment is used for realizing power supply safety monitoring, the existing power safety control equipment cannot reliably monitor the AR intelligent exhibition hall based on the special composition of the AR intelligent exhibition hall.
SUMMERY OF THE UTILITY MODEL
The utility model provides a safety monitoring device for an AR intelligent exhibition hall, which is used for solving the technical problem that the conventional power supply safety control equipment cannot reliably monitor the AR intelligent exhibition hall.
The utility model provides a safety monitoring device in AR wisdom exhibition room, includes:
the first power supply state monitoring device is used for monitoring whether the power supply state of the control device in the AR intelligent exhibition hall is abnormal or not;
the second power supply state monitoring device is used for monitoring whether the power supply state of the display device in the AR intelligent exhibition hall is abnormal or not;
the third power supply state monitoring device is used for monitoring whether the power supply state of the AR equipment in the AR intelligent exhibition hall is abnormal or not;
the first logic or gate circuit comprises a first signal input end, a second signal input end, a third signal input end and a signal output end, the signal output end of the first power supply state monitoring device is connected with the first signal input end of the first logic or gate circuit, the signal output end of the second power supply state monitoring device is connected with the second signal input end of the first logic or gate circuit, and the signal output end of the third power supply state monitoring device is connected with the third signal input end of the first logic or gate circuit; and
and the signal output end of the first logic OR gate circuit is connected with the alarm.
Furthermore, the safety monitoring device further comprises a first logic and gate circuit and an auxiliary switch corresponding to a power supply main power switch of the AR intelligent exhibition hall, wherein the first logic and gate circuit comprises a first signal input end, a second signal input end and a signal output end;
the signal output end of the first logic or gate circuit is connected with the alarm, and the alarm specifically comprises the following steps:
one end of the auxiliary switch is used for being connected with a power supply VCC, the other end of the auxiliary switch is connected with a first signal input end of the first logic AND gate circuit, a signal output end of the first logic OR gate circuit is connected with a second signal input end of the first logic AND gate circuit, and a signal output end of the first logic AND gate circuit is connected with the alarm.
Further, the safety monitoring device further comprises a delayer, a first switch tube and a relay, wherein the delayer is used for outputting a high level signal after delaying for a preset time when the high level signal is received, the first switch tube is used for conducting when the high level signal is received, and the relay comprises a control coil and a normally closed contact switch; the signal output part of first logic OR gate circuit connects the signal input part of time delay unit, the signal output part of time delay unit connects the control end of first switch tube, first switch tube series connection sets up in the power supply circuit of control coil, normally closed contact switch series connection sets up in the power supply bus way of AR wisdom exhibition room.
Furthermore, the safety monitoring device further comprises a maintenance key switch, an identity recognizer, a second switch tube and a second logic and gate circuit, wherein the identity recognizer is used for outputting a high level signal when identity recognition passes, the second switch tube is used for being conducted when the high level signal is received, and the second logic and gate circuit comprises a first signal input end, a second signal input end and a signal output end;
one end of the maintenance key switch is used for being connected with a power supply VCC, and the other end of the maintenance key switch is connected with a first signal input end of the second logic AND gate circuit; the signal output end of the identity recognizer is connected with the second signal input end of the second logic AND gate circuit; the second switch tube is connected with the first switch tube in parallel, and the signal output end of the second logic AND gate circuit is connected with the control end of the second switch tube.
Further, the first power supply state monitoring device comprises a first current sensor, a first voltage sensor, a first current comparator, a first voltage comparator and a second logic or gate circuit;
the first current sensor is used for detecting the current of a power supply line of the control device, the first voltage sensor is used for detecting the voltage of the power supply line of the control device, the first current comparator is used for outputting a low-level signal when the current of the power supply line of the control device is lower than a first safety current preset value, and outputting a high-level signal when the current of the power supply line of the control device is higher than the first safety current preset value; the first voltage comparator is used for outputting a low-level signal when the voltage of a power supply line of the control device is lower than a first safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the control device is higher than the first safety voltage preset value;
the signal output part of the first current sensor is connected with the signal input part of the first current comparator, the signal output part of the first voltage sensor is connected with the signal input part of the first voltage comparator, the signal output part of the first current comparator is connected with the first signal input part of the second logic OR gate circuit, the signal output part of the first voltage comparator is connected with the second signal input part of the second logic OR gate circuit, and the signal output part of the second logic OR gate circuit is the signal output part of the first power supply state monitoring device.
Further, the second power supply state monitoring device comprises a second current sensor, a second voltage sensor, a second current comparator, a second voltage comparator and a third logic or gate circuit;
the second current sensor is used for detecting the current of a power supply line of the display device, the second voltage sensor is used for detecting the voltage of the power supply line of the display device, the second current comparator is used for outputting a low-level signal when the current of the power supply line of the display device is lower than a second safety current preset value, and outputting a high-level signal when the current of the power supply line of the display device is higher than the second safety current preset value; the second voltage comparator is used for outputting a low-level signal when the voltage of the power supply line of the display device is lower than a second safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the display device is higher than the second safety voltage preset value;
the signal output part of the second current sensor is connected with the signal input part of the second current comparator, the signal output part of the second voltage sensor is connected with the signal input part of the second voltage comparator, the signal output part of the second current comparator is connected with the first signal input part of the third logic OR gate circuit, the signal output part of the second voltage comparator is connected with the second signal input part of the third logic OR gate circuit, and the signal output part of the third logic OR gate circuit is the signal output part of the second power supply state monitoring device.
Further, the third power supply state monitoring device comprises a third current sensor, a third voltage sensor, a third current comparator, a third voltage comparator and a fourth logical or gate circuit;
the third current sensor is used for detecting the current of the power supply line of the AR device, the third voltage sensor is used for detecting the voltage of the power supply line of the AR device, the third current comparator is used for outputting a low-level signal when the current of the power supply line of the AR device is lower than a third safety current preset value, and outputting a high-level signal when the current of the power supply line of the AR device is higher than the third safety current preset value; the third voltage comparator is used for outputting a low-level signal when the voltage of the power supply line of the AR device is lower than a third safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the AR device is higher than the third safety voltage preset value;
the signal output part of the third current sensor is connected with the signal input part of the third current comparator, the signal output part of the third voltage sensor is connected with the signal input part of the third voltage comparator, the signal output part of the third current comparator is connected with the first signal input part of the fourth logic OR gate circuit, the signal output part of the third voltage comparator is connected with the second signal input part of the fourth logic OR gate circuit, and the signal output part of the fourth logic OR gate circuit is the signal output part of the third power supply state monitoring device.
The safety monitoring device of the AR intelligent exhibition hall provided by the utility model has the beneficial effects that: whether first power supply state monitoring devices monitors the power supply state of controlling means in the AR wisdom exhibition room unusual, whether second power supply state monitoring devices monitors display device's power supply state unusual, whether third power supply state monitoring devices monitors the power supply state of AR equipment unusual, logic or the operation through first logic OR gate circuit, as long as there is at least one power supply state unusual, just can control the alarm and report to the police, realize the reliable safety monitoring to AR wisdom exhibition room, guarantee AR wisdom exhibition room's normal operating.
Drawings
FIG. 1 is an overall circuit diagram of a security monitoring device of an AR intelligent exhibition hall;
fig. 2 is a circuit diagram of the first power supply state monitoring device;
fig. 3 is a circuit diagram of a second power supply state monitoring device;
fig. 4 is a circuit diagram of the third power supply state monitoring device;
FIG. 5 is a power supply diagram of the AR intelligent exhibition hall.
Detailed Description
This embodiment provides a safety monitoring device in AR wisdom exhibition room, and the AR wisdom exhibition room that this safety monitoring device is suitable for includes controlling means, display device and AR equipment. The control device is the control core of the AR intelligent exhibition hall, and can be a conventional computer host or server equipment. The display device may be a conventional display screen. The AR device is used to enable AR interaction with the user and may be a conventional AR device, such as AR glasses, or an AR helmet. The control device is in signal connection with the display device and the AR equipment. The built-in show information that has relevant product in the controlling means, the user passes through AR equipment and interacts, realizes AR wisdom exhibition. Since the above-mentioned AR wisdom exhibition room is common AR wisdom exhibition room system, no longer give unnecessary details.
In this embodiment, the control device, the display device, and the AR device all supply power independently, and the power supply lines of the control device, the display device, and the AR device are all connected to a power supply bus, that is, the power supply lines of the control device, the display device, and the AR device are connected in parallel.
As shown in fig. 1, the safety monitoring device includes a first power supply state monitoring device, a second power supply state monitoring device, a third power supply state monitoring device, a first logic or gate circuit, and an alarm.
The first power supply state monitoring device is used for monitoring whether the power supply state of the control device in the AR intelligent exhibition hall is abnormal or not. The first power supply state monitoring device may be a conventional monitoring device for detecting whether the power supply state is abnormal, and as a specific embodiment, as shown in fig. 2, the first power supply state monitoring device includes a first current sensor, a first voltage sensor, a first current comparator, a first voltage comparator, and a second logical or gate circuit. The first current sensor is used for detecting the current of a power supply line of the control device, and may be a conventional current sensor, if the control device is powered by alternating current, the first current sensor is an alternating current sensor, and if the control device is powered by direct current, the first current sensor is a direct current sensor. The first voltage sensor is used for detecting the voltage of a power supply line of the control device, namely, detecting the power supply voltage of the control device, and may be a conventional voltage sensor, wherein if the control device is powered by alternating current, the first voltage sensor is an alternating current voltage sensor, and if the control device is powered by direct current, the first voltage sensor is a direct current voltage sensor. Because the power supply lines of the control device, the display device and the AR equipment are arranged in parallel, the power supply types of the three equipment are the same, namely, the three equipment simultaneously supply alternating current or direct current. Therefore, if the first current sensor is an alternating current sensor, the second current sensor and the third current sensor are also alternating current sensors, and if the first current sensor is a direct current sensor, the second current sensor and the third current sensor are also direct current sensors; the second voltage sensor and the third voltage sensor are also ac voltage sensors if the first voltage sensor is an ac voltage sensor, and are also dc voltage sensors if the first voltage sensor is a dc voltage sensor.
The first current comparator is used for outputting a low-level signal when the current of the power supply line of the control device is lower than a first safety current preset value, and outputting a high-level signal when the current of the power supply line of the control device is higher than the first safety current preset value. The first safety current preset value is a set safety current value, and when the current is higher than the first safety current preset value, the overcurrent abnormity is shown, and when the current is lower than the first safety current preset value, the normal current is shown. The first current comparator may be a conventional data processor (such as a single chip microcomputer) with a current comparison strategy built in, or the first current comparator is a hardware comparison circuit and has two signal input ends, one signal input end inputs a current signal detected by the first current sensor, and the other signal input end inputs a first safety current preset value. Since the signal output by the first current sensor is an electrical signal, i.e., is essentially a voltage signal, the voltage signal corresponding to the first safety current preset value is input to the other signal input end of the first current comparator, and the following second current comparator and third current comparator are the same as above.
The first voltage comparator is used for outputting a low-level signal when the voltage of a power supply line of the control device is lower than a first safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the control device is higher than the first safety voltage preset value. The first safety voltage preset value is a set safety voltage value, and indicates that overvoltage is abnormal when the voltage is higher than the first safety voltage preset value, and indicates that the voltage is normal when the voltage is lower than the first safety voltage preset value. Similarly, the first voltage comparator may be a conventional data processor (such as a single chip microcomputer) and a voltage comparison strategy is built in the first voltage comparator, or the first voltage comparator is a hardware comparison circuit and has two signal input ends, one signal input end inputs the voltage signal detected by the first voltage sensor, and the other signal input end inputs the first safety voltage preset value.
The second logical or gate circuit has a first signal input, a second signal input, and a signal output. The second logic or gate circuit is a conventional logic or gate circuit, and outputs a high level signal when a high level signal is input to at least one of the signal input terminals, and outputs a low level signal only when a low level signal is input to both of the signal input terminals. The structure and the working principle of the third logic or gate circuit and the fourth logic or gate circuit in the subsequent steps are the same as those of the second logic or gate circuit.
The signal output end of the first current sensor is connected with the signal input end of the first current comparator, and the signal output end of the first voltage sensor is connected with the signal input end of the first voltage comparator. The signal output end of the first current comparator is connected with the first signal input end of the second logic OR gate circuit, the signal output end of the first voltage comparator is connected with the second signal input end of the second logic OR gate circuit, and the signal output end of the second logic OR gate circuit is the signal output end of the first power supply state monitoring device.
The second power supply state monitoring device is used for monitoring whether the power supply state of the display device in the AR intelligent exhibition hall is abnormal or not. Similarly, as shown in fig. 3, the second power supply state monitoring device includes a second current sensor, a second voltage sensor, a second current comparator, a second voltage comparator, and a third logical or gate circuit. The second current sensor is used for detecting the current of a power supply line of the display device, and the second voltage sensor is used for detecting the voltage of the power supply line of the display device.
The second current comparator is used for outputting a low-level signal when the current of the power supply line of the display device is lower than a second safety current preset value, and outputting a high-level signal when the current of the power supply line of the display device is higher than the second safety current preset value. The second safety current preset value is set according to actual needs, and can be equal to or different from the first safety current preset value. The second voltage comparator is used for outputting a low level signal when the voltage of the power supply line of the display device is lower than a second safety voltage preset value, and outputting a high level signal when the voltage of the power supply line of the display device is higher than the second safety voltage preset value. The second safety voltage preset value is set according to actual needs, and may be equal to or different from the first safety voltage preset value.
The signal output end of the second current sensor is connected with the signal input end of the second current comparator, the signal output end of the second voltage sensor is connected with the signal input end of the second voltage comparator, the signal output end of the second current comparator is connected with the first signal input end of the third logic OR gate circuit, the signal output end of the second voltage comparator is connected with the second signal input end of the third logic OR gate circuit, and the signal output end of the third logic OR gate circuit is the signal output end of the second power supply state monitoring device.
And the third power supply state monitoring device is used for monitoring whether the power supply state of the AR equipment in the AR intelligent exhibition hall is abnormal or not. Similarly, as shown in fig. 4, the third power supply state monitoring device includes a third current sensor, a third voltage sensor, a third current comparator, a third voltage comparator, and a fourth logical or gate circuit. The third current sensor is used for detecting the current of a power supply line of the AR device, and the third voltage sensor is used for detecting the voltage of the power supply line of the AR device.
The third current comparator is used for outputting a low-level signal when the current of the power supply line of the AR device is lower than a third safety current preset value, and outputting a high-level signal when the current of the power supply line of the AR device is higher than the third safety current preset value. The third safety current preset value is set according to actual needs, and may be equal to or different from the first safety current preset value. The third voltage comparator is used for outputting a low-level signal when the voltage of the power supply line of the AR device is lower than a third safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the AR device is higher than the third safety voltage preset value. The third safety voltage preset value is set according to actual needs, and may be equal to or different from the first safety voltage preset value.
The signal output end of the third current sensor is connected with the signal input end of the third current comparator, the signal output end of the third voltage sensor is connected with the signal input end of the third voltage comparator, the signal output end of the third current comparator is connected with the first signal input end of the fourth logical OR gate circuit, the signal output end of the third voltage comparator is connected with the second signal input end of the fourth logical OR gate circuit, and the signal output end of the fourth logical OR gate circuit is the signal output end of the third power supply state monitoring device.
The first logical or gate circuit includes a first signal input, a second signal input, a third signal input, and a signal output. The first logical or gate circuit is a conventional logical or gate operation circuit, and outputs a high level signal when a high level signal is input to at least one of the signal input terminals, and outputs a low level signal only when a low level signal is input to all of the signal input terminals.
The signal output end of the first power supply state monitoring device is connected with the first signal input end of the first logic OR gate circuit, the signal output end of the second power supply state monitoring device is connected with the second signal input end of the first logic OR gate circuit, and the signal output end of the third power supply state monitoring device is connected with the third signal input end of the first logic OR gate circuit.
The alarm may be a conventional alarm device such as an audible and visual alarm. The alarm is controlled by a high level signal. The signal output end of the first logic or gate circuit is connected with the alarm, namely the control signal input end of the alarm, when the first logic or gate circuit outputs a high level signal, the alarm gives an alarm, and when the first logic or gate circuit outputs a low level signal, the alarm is stopped.
Then, taking the monitoring process of whether the power supply state of the control device in the AR intelligent exhibition hall is abnormal as an example: if the current detected by the first current sensor is normal, the first current comparator outputs a low level signal, if the first current sensor detects overcurrent, the first current comparator outputs a high level signal, similarly, if the voltage detected by the first voltage sensor is normal, the first voltage comparator outputs a low level signal, if the first voltage sensor detects overvoltage, the first voltage comparator outputs a high level signal, and under the action of the second logical or gate circuit, the second logical or gate circuit outputs a high level signal as long as at least one of overcurrent and overvoltage occurs. The monitoring process of whether the power supply states of the display device and the AR equipment are abnormal is the same as the above. Under the action of the first logic OR gate circuit, as long as at least one of the second logic OR gate circuit, the third logic OR gate circuit and the fourth logic OR gate circuit outputs a high level signal, namely at least one of the control device, the display device and the AR equipment in the AR intelligent exhibition hall has abnormal power supply state, the first logic OR gate circuit outputs a high level signal, and the alarm gives an alarm.
In this embodiment, as shown in fig. 5, a main power supply switch K1 is disposed on a power supply bus of the AR intelligent exhibition hall, and the main power supply switch K1 is used to control whether the AR intelligent exhibition hall is powered on to operate. The main power supply switch K1 may be a relay switch having two states of on and off. When the AR intelligent exhibition hall is switched on, the power supply bus circuit of the AR intelligent exhibition hall is switched on, the control device, the display device and the AR equipment are powered on to operate, and when the AR intelligent exhibition hall is switched off, the power supply bus circuit of the AR intelligent exhibition hall is switched on, and the control device, the display device and the AR equipment are powered off to stop.
In this embodiment, the safety monitoring device further includes a first logic and gate circuit and an auxiliary switch K2. The first logic AND gate circuit comprises a first signal input end, a second signal input end and a signal output end. The first logic and gate circuit is a conventional logic and gate circuit, and outputs a high level signal only when both the first signal input terminal and the second signal input terminal input a high level signal, and outputs a low level signal only when at least one of the first signal input terminal and the second signal input terminal inputs a low level signal. The auxiliary switch K2 is an auxiliary switch of the power supply main power switch K1, the auxiliary switch K2 is in the same switch state as the power supply main power switch K1, and when the switch state of the power supply main power switch K1 changes, the auxiliary switch K2 also changes correspondingly. Such as: the power supply main power switch K1 is a main contact switch of the relay, and the auxiliary switch K2 is an auxiliary contact switch of the relay.
Moreover, the connection of the signal output end of the first logic or gate circuit with the alarm specifically comprises: one end of the auxiliary switch K2 is used for connecting a power supply VCC, the other end of the auxiliary switch K2 is connected with a first signal input end of the first logic AND gate circuit, a signal output end of the first logic OR gate circuit is connected with a second signal input end of the first logic AND gate circuit, and a signal output end of the first logic AND gate circuit is connected with the alarm. Furthermore, the other end of the auxiliary switch K2 may be grounded through a pull-down resistor, so as to ensure the reliability of the control signal. The power source VCC may be a conventional power supply device, such as a conventional 3.3V power source or a 5V power source, obtained by rectifying ac power through a rectifier, or directly provided by a dc energy storage battery.
Then, if the main power supply switch K1 is in a conducting state, it indicates that the AR intelligent exhibition hall is in power-on operation, the auxiliary switch K2 is also in a conducting state, a high-level signal is input to the first signal input end of the first logic and gate circuit, the first logic or gate circuit performs detection according to the above monitoring process, and the alarm is controlled to give an alarm when the alarm condition is met. If the main power supply switch K1 is in an off state, which indicates that the AR intelligent exhibition hall is out of power, the auxiliary switch K2 is also in an off state, and a low level signal is input into the first signal input end of the first logic AND gate circuit, no matter whether the first logic OR gate circuit outputs a high level signal or not, the first logic AND gate circuit does not output a high level signal, and the alarm is not controlled to alarm. Therefore, only when AR wisdom exhibition room under the operating condition that gets electricity, just carry out safety monitoring, avoid appearing when the false alarm condition under the operating condition that AR wisdom exhibition room loses electricity, promote the control reliability.
In this embodiment, the safety monitoring device further includes a time delay, a first switch tube Q1, and a relay. The delayer is a conventional delay device and is used for outputting a high-level signal after delaying for a preset time when the high-level signal is received. The delay time of the delayer is set according to actual needs. The first switching tube Q1 is a conventional switching device, such as a transistor, a MOS transistor, etc., and functions as: when receiving a high level signal, the first switch transistor Q1 is turned on, and when receiving a low level signal, the first switch transistor Q1 is an NPN transistor or an N MOS transistor. The relay is a conventional relay device including a control coil T1 and a normally closed contact switch S1.
The signal output end of the first logic or gate circuit is connected with the signal input end of a time delay device, the signal output end of the time delay device is connected with the control end of a first switch tube Q1, a first switch tube Q1 is arranged in a power supply loop of a control coil T1 in series, and a normally closed contact switch S1 is arranged in a power supply bus circuit of the AR intelligent exhibition hall in series. The position of the normally closed contact switch S1 in the power supply bus circuit and the position of the power supply main power switch K1 in the power supply bus circuit are independent of each other and do not influence each other.
Then, when the alarm was reported to the police, alarm input high level signal promptly, high level signal output gives the delay timer, the high level signal is received to the delay timer, after the time delay preset time, the high level signal of delay timer output, control first switch tube Q1 switches on, control coil T1 gets electric, normally closed contact switch S1 disconnection, the power supply bus circuit disconnection in AR wisdom exhibition room, AR wisdom exhibition room loses the electricity, realize reporting to the police and break off the power supply in AR wisdom exhibition room after the time preset, guarantee the safe operation in AR wisdom exhibition room.
Further, the safety monitoring device also comprises a maintenance key switch K3, an identity recognizer, a second switch tube Q2 and a second logic AND gate circuit.
The maintenance key switch K3 is a conventional key switch, and the maintenance key switch K3 is turned on or off by a key. The identity recognizer may be a conventional fingerprint recognizer or may be other devices for detecting identity, such as a password recognizer. The identity recognizer is used for outputting a high level signal when identity recognition is passed and correspondingly outputting a low level signal when the identity recognizer is in an idle state or the identity recognition is not passed. The second switching tube Q2 is a conventional switching device, such as a transistor, a MOS transistor, etc., and functions as: when receiving a high level signal, the second switch Q2 is turned on, and when receiving a low level signal, the second switch Q2 is an NPN transistor or an N MOS transistor. The second logic and gate circuit comprises a first signal input end, a second signal input end and a signal output end, the operation principle is the same as that of the first and logic and gate circuit, and the description is omitted.
One end of the maintenance key switch K3 is used for connecting a power supply VCC, the other end of the maintenance key switch K3 is connected with a first signal input end of a second logic AND gate circuit, furthermore, the other end of the maintenance key switch K3 can be grounded through a pull-down resistor, when the maintenance key switch K3 is switched on, the other end of the maintenance key switch K3 outputs a high level signal, and when the maintenance key switch K3 is switched off, the other end of the maintenance key switch K3 outputs a low level signal. And the signal output end of the identity recognizer is connected with the second signal input end of the second logic AND gate circuit. The second switch tube Q2 is connected in parallel with the first switch tube Q1, and the signal output end of the second logic and gate circuit is connected with the control end of the second switch tube Q2. In this embodiment, the control terminal of the first switch transistor Q1 and the control terminal of the second switch transistor Q2 may be grounded through a pull-down resistor, so as to ensure the reliability of the received signal.
When needing to overhaul, the maintainer overhauls key switch K3 through the key operation and switches on, the first signal input part input high level signal of second logic AND gate circuit, and through the identity recognizer identification maintainer 'S identity, after the identity discernment passes through, the second signal input part input high level signal of second logic AND gate circuit, then the signal output part output high level signal of second logic AND gate circuit, control second switch tube Q2 switches on, control coil T1 is electrified, normally closed contact switch S1 disconnection, AR wisdom exhibition room' S power supply bus circuit disconnection, AR wisdom exhibition room loses electricity, realize that AR wisdom exhibition room overhauls the power supply of in-process disconnection AR wisdom exhibition room, guarantee the security of overhauing. And moreover, the overhaul control is realized through the overhaul key switch K3, the identity recognizer and the second logic AND gate circuit, the overhaul safety is improved, and the random operation of irrelevant personnel is avoided.
Claims (7)
1. The utility model provides a safety monitoring device in AR wisdom exhibition room which characterized in that includes:
the first power supply state monitoring device is used for monitoring whether the power supply state of the control device in the AR intelligent exhibition hall is abnormal or not;
the second power supply state monitoring device is used for monitoring whether the power supply state of the display device in the AR intelligent exhibition hall is abnormal or not;
the third power supply state monitoring device is used for monitoring whether the power supply state of the AR equipment in the AR intelligent exhibition hall is abnormal or not;
the first logic or gate circuit comprises a first signal input end, a second signal input end, a third signal input end and a signal output end, the signal output end of the first power supply state monitoring device is connected with the first signal input end of the first logic or gate circuit, the signal output end of the second power supply state monitoring device is connected with the second signal input end of the first logic or gate circuit, and the signal output end of the third power supply state monitoring device is connected with the third signal input end of the first logic or gate circuit; and
and the signal output end of the first logic OR gate circuit is connected with the alarm.
2. The safety monitoring device for the AR intelligent exhibition hall according to claim 1, wherein the safety monitoring device further comprises a first logic and gate circuit, and an auxiliary switch corresponding to a main power supply switch of the AR intelligent exhibition hall, the first logic and gate circuit comprising a first signal input terminal, a second signal input terminal and a signal output terminal;
the signal output end of the first logic or gate circuit is connected with the alarm, and the alarm specifically comprises the following steps:
one end of the auxiliary switch is used for being connected with a power supply VCC, the other end of the auxiliary switch is connected with a first signal input end of the first logic AND gate circuit, a signal output end of the first logic OR gate circuit is connected with a second signal input end of the first logic AND gate circuit, and a signal output end of the first logic AND gate circuit is connected with the alarm.
3. The safety monitoring device for the AR intelligent exhibition hall according to claim 1, further comprising a time delay unit, a first switch tube and a relay, wherein the time delay unit is configured to delay a high level signal for a preset time when receiving the high level signal, the first switch tube is configured to be turned on when receiving the high level signal, and the relay includes a control coil and a normally closed contact switch; the signal output part of first logic OR gate circuit connects the signal input part of time delay unit, the signal output part of time delay unit connects the control end of first switch tube, first switch tube series connection sets up in the power supply circuit of control coil, normally closed contact switch series connection sets up in the power supply bus way of AR wisdom exhibition room.
4. The safety monitoring device for the AR intelligent exhibition hall according to claim 3, wherein the safety monitoring device further comprises a service key switch, an identity recognizer, a second switch tube and a second logic AND gate circuit, the identity recognizer is used for outputting a high level signal when the identity recognition is passed, the second switch tube is used for conducting when the high level signal is received, and the second logic AND gate circuit comprises a first signal input end, a second signal input end and a signal output end;
one end of the maintenance key switch is used for being connected with a power supply VCC, and the other end of the maintenance key switch is connected with a first signal input end of the second logic AND gate circuit; the signal output end of the identity recognizer is connected with the second signal input end of the second logic AND gate circuit; the second switch tube is connected with the first switch tube in parallel, and the signal output end of the second logic AND gate circuit is connected with the control end of the second switch tube.
5. The safety monitoring device for the AR intelligent exhibition hall according to claim 1, wherein the first power supply state monitoring device comprises a first current sensor, a first voltage sensor, a first current comparator, a first voltage comparator and a second logic OR gate circuit;
the first current sensor is used for detecting the current of a power supply line of the control device, the first voltage sensor is used for detecting the voltage of the power supply line of the control device, the first current comparator is used for outputting a low-level signal when the current of the power supply line of the control device is lower than a first safety current preset value, and outputting a high-level signal when the current of the power supply line of the control device is higher than the first safety current preset value; the first voltage comparator is used for outputting a low-level signal when the voltage of a power supply line of the control device is lower than a first safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the control device is higher than the first safety voltage preset value;
the signal output part of the first current sensor is connected with the signal input part of the first current comparator, the signal output part of the first voltage sensor is connected with the signal input part of the first voltage comparator, the signal output part of the first current comparator is connected with the first signal input part of the second logic OR gate circuit, the signal output part of the first voltage comparator is connected with the second signal input part of the second logic OR gate circuit, and the signal output part of the second logic OR gate circuit is the signal output part of the first power supply state monitoring device.
6. The safety monitoring device for the AR intelligent exhibition hall according to claim 1, wherein the second power supply state monitoring device comprises a second current sensor, a second voltage sensor, a second current comparator, a second voltage comparator and a third logical or gate circuit;
the second current sensor is used for detecting the current of a power supply line of the display device, the second voltage sensor is used for detecting the voltage of the power supply line of the display device, the second current comparator is used for outputting a low-level signal when the current of the power supply line of the display device is lower than a second safety current preset value, and outputting a high-level signal when the current of the power supply line of the display device is higher than the second safety current preset value; the second voltage comparator is used for outputting a low-level signal when the voltage of the power supply line of the display device is lower than a second safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the display device is higher than the second safety voltage preset value;
the signal output part of the second current sensor is connected with the signal input part of the second current comparator, the signal output part of the second voltage sensor is connected with the signal input part of the second voltage comparator, the signal output part of the second current comparator is connected with the first signal input part of the third logic OR gate circuit, the signal output part of the second voltage comparator is connected with the second signal input part of the third logic OR gate circuit, and the signal output part of the third logic OR gate circuit is the signal output part of the second power supply state monitoring device.
7. The safety monitoring device for the AR intelligent exhibition hall according to claim 1, wherein the third power supply state monitoring device comprises a third current sensor, a third voltage sensor, a third current comparator, a third voltage comparator and a fourth logical or gate circuit;
the third current sensor is used for detecting the current of the power supply line of the AR device, the third voltage sensor is used for detecting the voltage of the power supply line of the AR device, the third current comparator is used for outputting a low-level signal when the current of the power supply line of the AR device is lower than a third safety current preset value, and outputting a high-level signal when the current of the power supply line of the AR device is higher than the third safety current preset value; the third voltage comparator is used for outputting a low-level signal when the voltage of the power supply line of the AR device is lower than a third safety voltage preset value, and outputting a high-level signal when the voltage of the power supply line of the AR device is higher than the third safety voltage preset value;
the signal output part of the third current sensor is connected with the signal input part of the third current comparator, the signal output part of the third voltage sensor is connected with the signal input part of the third voltage comparator, the signal output part of the third current comparator is connected with the first signal input part of the fourth logic OR gate circuit, the signal output part of the third voltage comparator is connected with the second signal input part of the fourth logic OR gate circuit, and the signal output part of the fourth logic OR gate circuit is the signal output part of the third power supply state monitoring device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122785165.2U CN216133128U (en) | 2021-11-11 | 2021-11-11 | Safety monitoring device in AR wisdom exhibition room |
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| CN202122785165.2U CN216133128U (en) | 2021-11-11 | 2021-11-11 | Safety monitoring device in AR wisdom exhibition room |
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