CN212031585U - Electric power warning board - Google Patents
Electric power warning board Download PDFInfo
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- CN212031585U CN212031585U CN202020379567.5U CN202020379567U CN212031585U CN 212031585 U CN212031585 U CN 212031585U CN 202020379567 U CN202020379567 U CN 202020379567U CN 212031585 U CN212031585 U CN 212031585U
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Abstract
The application relates to an electric power warning board, the warning board body is equipped with induced voltage module, human body and is close sensing module and suggestion module. The induction voltage module comprises an antenna, a field effect tube, a logic chip and a relay which are connected in sequence; the relay is used for controlling the connection or disconnection of a power supply loop of the human body proximity sensing module; the human body proximity sensing module is connected with the prompting module. Based on the structure, the induced voltage module is used for starting the human body approach sensing module when the induced voltage is obtained; the human body proximity sensing module is used for detecting whether a living body enters a detection range or not and indicating the prompting module to give an alarm when the living body enters the detection range. Based on this, the warning sign can start human body and be close sensing module when sensing high-pressure alternating current signal to when detecting that the live body gets into detection range, remind and report an emergency and ask for help or increased vigilance, avoid the warning sign to carry out invalid and report an emergency and ask for help or increased vigilance effect effectively, reduce the warning sign consumption.
Description
Technical Field
The application relates to the technical field of electric power safety, in particular to an electric power warning board.
Background
Outdoor high-voltage electrical equipment all hangs safety warning sign on the shell, prevents that it from someone from climbing equipment by mistake when live working. The traditional electric warning board can work all the time after being installed.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the traditional warning board can also operate when the electrical equipment is in power failure for maintenance; moreover, after the electric equipment is powered on, the hidden trouble that the power supply of the warning board is forgotten to be recovered exists; namely, the traditional electric power warning board has poor warning effect.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an electric power warning board for solving the problem of poor warning effect of the conventional electric power warning board.
In order to achieve the above object, an embodiment of the present application provides an electric power warning board, including a warning board body;
the warning sign body is equipped with:
the induction voltage module comprises a relay, a field effect tube, a logic chip and an antenna for acquiring induction voltage; the antenna is connected with the control end of the field effect tube; the first transmission end of the field effect transistor is connected with the input end of the logic chip; the VCC end of the relay is connected with the output end of the logic chip;
a first electrode of the human body proximity sensing module is connected with the common end of the relay, and a second electrode of the human body proximity sensing module is connected with the contact end of the relay;
and the prompting module is connected with the output end of the human body approach sensing module.
In one embodiment, the warning board body is also provided with a power supply module;
the first output end of the power supply module is connected with the input end of the logic chip;
the field effect transistor is an N-type MOS transistor; the control end of the field effect transistor is a grid electrode of the N-type MOS transistor, the first transmission end of the field effect transistor is a source electrode of the N-type MOS transistor, and the second transmission end of the field effect transistor is a drain electrode of the N-type MOS transistor;
the drain electrode of the N-type MOS tube is grounded.
In one embodiment, the second output end of the power supply module is connected between the first electrode of the human body proximity sensing module and the common end of the relay;
or the second output end of the power supply module is connected between the contact ends of the second electrode connecting relay of the human body proximity sensing module.
In one embodiment, the power module comprises:
a DC-DC voltage reduction unit;
a battery; the power supply end of the battery is connected with the first output end of the power module through the DC-DC voltage reduction unit; and the power supply end of the battery is connected with the second output end of the power supply module.
In one embodiment, the power module further comprises:
the solar panel is connected with a charging end of the battery; the solar panel is arranged on the side plate of the warning board body.
In one embodiment, the power module further comprises:
the power switch is connected between the power supply end of the battery and the output end of the power module; the power switch is arranged on the side plate of the warning board body.
In one embodiment, the logic chip is a not gate logic chip.
In one embodiment, the induced voltage module further comprises a resistor connected between the first output terminal of the power module and the input terminal of the logic chip, and a light emitting diode connected to the VCC terminal of the relay;
the power module is provided with a charging hole.
In one embodiment, the human body proximity sensing module is a microwave radar sensing unit.
In one embodiment, the prompting module is a buzzer or an audible and visual alarm.
One of the above technical solutions has the following advantages and beneficial effects:
the warning board body is provided with an induced voltage module, a human body approach sensing module and a prompt module. The induction voltage module comprises an antenna, a field effect tube, a logic chip and a relay which are connected in sequence; the relay is used for controlling the connection or disconnection of a power supply loop of the human body proximity sensing module; the human body proximity sensing module is connected with the prompting module. Based on the structure, the induced voltage module is used for starting the human body approach sensing module when the induced voltage is obtained; the human body proximity sensing module is used for detecting whether a living body enters a detection range or not and indicating the prompting module to give an alarm when the living body enters the detection range. Based on this, the warning sign can start human body and be close sensing module when sensing high-pressure alternating current signal to when detecting that the live body gets into detection range, remind and report an emergency and ask for help or increased vigilance, avoid the warning sign to carry out invalid and report an emergency and ask for help or increased vigilance effect effectively, reduce the warning sign consumption. And when the electrical equipment has a power failure and is overhauled, the warning board body can automatically enable the human body to approach the sensing module to stop working, the power is saved, the trouble of manually turning off the power supply is avoided, and the hidden danger that the power supply of the warning board is forgotten to be recovered after the electrical equipment is powered on can be solved.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.
FIG. 1 is a first schematic block diagram of an embodiment of a power warning sign;
FIG. 2 is a second schematic block diagram of a power warning sign in one embodiment;
FIG. 3 is a third schematic block diagram of a power warning sign in one embodiment;
FIG. 4 is a fourth schematic block diagram of a power warning sign in one embodiment;
FIG. 5 is a schematic diagram of a solar power module of the power warning sign of an embodiment;
FIG. 6 is a schematic diagram of an inductive power module of the power warning sign of an embodiment;
fig. 7 is a schematic structural diagram of a microwave radar sensing unit of the power warning board in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "transmission side", "output side", "input side", and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, an electrical warning sign is provided, as shown in fig. 1, comprising a warning sign body.
The warning sign body is equipped with:
the induction voltage module comprises a relay, a field effect tube, a logic chip and an antenna for acquiring induction voltage; the antenna is connected with the control end of the field effect tube; the first transmission end of the field effect transistor is connected with the input end of the logic chip; the VCC end of the relay is connected with the output end of the logic chip;
a first electrode of the human body proximity sensing module is connected with the common end of the relay, and a second electrode of the human body proximity sensing module is connected with the contact end of the relay;
and the prompting module is connected with the output end of the human body approach sensing module.
Particularly, the warning sign body is equipped with induced voltage module, human body and is close sensing module and suggestion module. The induction voltage module comprises an antenna, a field effect tube, a logic chip and a relay which are connected in sequence; the relay is used for controlling the connection or disconnection of a power supply loop of the human body proximity sensing module; the human body proximity sensing module is connected with the prompting module. Based on the structure, the induced voltage module is used for starting the human body approach sensing module when the induced voltage is obtained; the human body proximity sensing module is used for detecting whether a living body enters a detection range or not, and indicating the prompting module to give an alarm when the living body is detected to enter the detection range. For example, the induced voltage module may drive a driving loop of the relay to be turned on when the induced voltage is obtained; when a driving loop of the relay is conducted, the switch is adsorbed, so that a power supply loop of the human body proximity sensing module is conducted, and the human body proximity sensing module is started to operate; when the power supply circuit is switched on, the human body proximity sensing module detects whether a living body enters a detection range, and when the living body is detected to enter the detection range, a signal is sent to the prompting module to give an alarm.
Specifically, in the induced voltage module, the antenna controls the field effect transistor to be switched on or switched off according to the induced voltage, and further controls a signal transmitted to the logic chip by the field effect transistor; the logic chip is used for driving the relay to be switched on or switched off. The first transmission end of the field effect transistor is connected with the input end of the logic chip, and the second transmission end of the field effect transistor can be used for connecting a power supply or grounding, which is not specifically limited herein; the induced voltage may be generated by a high voltage ac signal. Based on the control method, the field effect transistor can control the conduction or the cut-off between the first transmission end and the second transmission end according to the obtained induction voltage; optionally, the Field Effect Transistor may be a P-type MOS Transistor or an N-type MOS Transistor (Metal-Oxide-Semiconductor Field-Effect Transistor), which is not specifically limited herein; it should be noted that the fet can control the input of the logic chip to be connected to a power signal or ground. Furthermore, the logic chip can be used for outputting according to the signal transmitted by the field effect transistor so as to drive the relay to be switched on or off; for example, when the input terminal of the logic chip is connected to a power signal, the driving relay is turned on, or when the input terminal of the logic chip is grounded, the driving relay is turned on, which is not specifically limited herein.
The VCC end of the relay is connected with the output end of the logic chip; and the GND end of the relay is grounded or connected with the GND end of the logic chip. The driving circuit of the relay mainly comprises a VCC end and a GND end; when the VCC end obtains a high level signal, the driving loop is conducted; when the VCC end obtains the low level signal, the driving loop is disconnected. The common end of the relay is connected with a first electrode of the human body proximity sensing module; the contact end of the relay is connected with a second electrode of the human body proximity sensing module; the contact end may be a normally open contact end or a normally closed contact end of the relay, which is not limited herein. The human body proximity sensing module may detect whether a living body enters a detection range by means of infrared or microwave, for example, a human body proximity sensor, an infrared detection probe, a microwave detection probe, or the like, which is not specifically limited herein; it should be noted that the human proximity sensing module can also be used for detecting whether an animal enters the detection range; the detection range can be realized by arranging corresponding devices or circuits according to actual requirements. When the human body approaching sensing module detects that the living body enters the detection range, the human body approaching sensing module can indicate the prompting module to give an alarm in the modes of light, loudspeaker, caption, vibration and the like, and the method is not particularly limited.
In one example, the second transmission end of the field effect transistor is connected with a power supply, the logic chip can execute NOT gate logic, and the second power end of the human body proximity sensing module is connected with the normally closed contact end of the relay. The field effect tube is conducted when the induction voltage is obtained, and the power supply transmits a high level signal to the input end of the logic chip; the output end of the logic chip outputs a low level signal to drive the relay to be switched off, the common end of the relay is switched on with the normally closed contact end, and then the human body approaches the starting operation of the sensing module to detect whether a living body enters a detection range.
In one example, the second transmission terminal of the field effect transistor is connected with a power supply; the logic chip can execute AND gate logic, one input end of the logic chip is connected with the first transmission end of the field effect tube, and the other input end of the logic chip is connected with a power supply; and a second power supply end of the human body approach sensing module is connected with a normally open contact end of the relay. The field effect tube is conducted when the induction voltage is obtained, and the power supply transmits high level signals to two input ends of the logic chip respectively; the output end of the logic chip outputs a high level signal to drive the relay to be conducted, the common end and the normally open contact end of the relay are conducted, and then the human body approaches the starting operation of the sensing module to detect whether a living body enters a detection range.
In one example, the second transmission terminal of the field effect transistor is connected with a power supply; the logic chip can execute OR gate logic, one input end of the logic chip is connected with the first transmission end of the field effect tube, and the other input end of the logic chip is connected with the power supply through the switch circuit; and a second power supply end of the human body approach sensing module is connected with a normally open contact end of the relay. The field effect tube is conducted when the induction voltage is obtained, and the power supply transmits a high level signal to the input end of the logic chip; the output end of the logic chip outputs a high level signal to drive the relay to be conducted, the common end and the normally open contact end of the relay are conducted, and then the human body approaches the starting operation of the sensing module to detect whether a living body enters a detection range. In addition, the switch circuit can be switched on according to external control, and the power supply transmits a high-level signal to the input end of the logic chip; the output end of the logic chip outputs a high level signal to drive the relay to be conducted, the common end and the normally open contact end of the relay are conducted, and then the human body approaches the starting operation of the sensing module to detect whether a living body enters a detection range. Namely, the embodiment of the application can automatically induce the high-voltage alternating-current signal and start the human body proximity sensing module, and can also manually start the human body proximity sensing module, so that the functionality and the applicability of the circuit are improved.
In one example, the second transmission terminal of the field effect transistor is grounded; the logic chip can execute NOT gate logic; the input end of the logic chip and the first transmission end of the field effect tube are connected with the same power supply; and a second power supply end of the human body approach sensing module is connected with a normally open contact end of the relay. The field effect tube is cut off when the induction voltage is not obtained, and the power supply transmits a high level signal to the input end of the logic chip; the output end of the logic chip outputs a low level signal to drive the relay to be switched off, the common end of the relay is switched on with the normally closed contact end, and then the human body approaches the power-off of the sensing module to stop running. The field effect tube is conducted when the induction voltage is obtained, and the input end of the logic chip obtains a low level signal; the output end of the logic chip outputs a high level signal to drive the relay to be conducted, the common end and the normally open contact end of the relay are conducted, and then the human body approaches the starting operation of the sensing module to detect whether a living body enters a detection range.
In one example, the second transmission terminal of the field effect transistor is grounded; the logic chip can execute NOT gate logic; the input end of the logic chip and the first transmission end of the field effect tube are connected with the same power supply; and a second power supply end of the human body approach sensing module is connected with a normally closed contact end of the relay. The field effect tube is conducted when the induction voltage is not obtained, and the input end of the logic chip obtains a low level signal; the output end of the logic chip outputs a high level signal to drive the relay to be switched on, and the common end and the normally open contact end of the relay are switched on, so that the human body approaches the power-off of the sensing module and stops running. The field effect tube is cut off when the induction voltage is obtained, and the power supply transmits a high level signal to the input end of the logic chip; the output end of the logic chip outputs a low level signal to drive the relay to be disconnected, the common end of the relay is conducted with the normally closed contact end, and then the human body approaches the conduction operation of the sensing module to detect whether a living body enters a detection range.
In one example, the near-electric induction module drives the relay to automatically attract after sensing a high-voltage alternating-current signal, and the normally open contact end of the relay and the public end contact are closed and conducted; and a power supply loop of the human body proximity sensing module, such as a power supply loop of an infrared radar probe or a microwave radar probe, is formed by connecting the normally open contact end of the relay and the common end in series, so that the human body proximity sensing module is started and operated.
According to the embodiment of the application, whether a high-voltage alternating current signal exists or not is detected through the induction voltage module, and then whether the human body approaching sensing module operates or not is controlled through the relay. The induction voltage module is matched with the relay, and can start the human body proximity sensing module when detecting a high-voltage alternating-current signal; when the human body approaching sensing module detects that the living body enters the detection range, the indicating and prompting module is indicated to perform near-electricity alarm prompting. If the high-voltage alternating current signal is not detected, the human body proximity sensing module and the prompting module do not need to be started, and energy consumption is reduced. Based on this, this application embodiment can start human body and be close sensing module when sensing high-pressure alternating current signal to when detecting that the live body gets into detection range, remind and report an emergency and ask for help or increased vigilance, avoid the warning sign to carry out invalid warning, effectively improve warning effect, reduce warning sign consumption. And when the electrical equipment has a power failure and is overhauled, the warning board body can automatically enable the human body to approach the sensing module to stop working, the power is saved, the trouble of manually turning off the power supply is avoided, and the hidden danger that the power supply of the warning board is forgotten to be recovered after the electrical equipment is powered on can be solved.
In one embodiment, as shown in fig. 2, the warning board body is further provided with a power module;
the first output end of the power supply module is connected with the input end of the logic chip;
the field effect transistor is an N-type MOS transistor; the control end of the field effect transistor is a grid electrode of the N-type MOS transistor, the first transmission end of the field effect transistor is a source electrode of the N-type MOS transistor, and the second transmission end of the field effect transistor is a drain electrode of the N-type MOS transistor;
the drain electrode of the N-type MOS tube is grounded.
Particularly, the warning board body further comprises a power module which can be used for supplying power to the modules and units in the body. The field effect transistor can be an N-type MOS transistor. Specifically, a grid electrode of the N-type MOS tube is used for acquiring an induction voltage through an antenna; the source electrode of the N-type MOS tube is connected with the input end of the logic chip, and the drain electrode of the N-type MOS tube is grounded; meanwhile, the power module is respectively connected with the input end of the logic chip and the source electrode of the N-type MOS tube. Based on the structure, when no induced voltage exists, the drain-source of the N-type MOS tube is cut off, and the power supply module transmits a high-level signal to the input end of the logic chip; when the induction voltage is obtained, the drain-source of the N-type MOS tube is conducted, and the input end of the logic chip is changed into low level due to the fact that the drain electrode is grounded. Further, a high level signal or a low level signal may be transmitted to the VCC terminal of the relay through the gate logic of the logic chip, which is not specifically limited herein. The embodiment of the application can mainly realize near-electricity induction through the power module, the N-type MOS tube and the logic chip, is simple in structure, and has good near-electricity protection effect by detecting that a living body is close to the near-electricity alarm prompt under the high-voltage condition.
In one embodiment, the first output terminal of the power module is further connected to a VCC terminal of the logic chip.
In one embodiment, the drain of the N-type MOS tube is connected with the GND terminal of the logic chip.
In one embodiment, the GND terminal of the relay is connected with the GND terminal of the logic chip.
In one embodiment, the second output terminal of the power module is connected between the first electrode of the human body proximity sensing module and the common terminal of the relay.
In one embodiment, the second output terminal of the power module is connected between the contact terminals of the second electrode connection relay of the human body proximity sensing module.
Specifically, when the relay is switched on, the second output end of the power supply module supplies power to the human body proximity sensing module.
In one embodiment, as shown in fig. 3, the power supply module includes:
a DC (Direct Current) -DC voltage step-down unit;
a battery; the power supply end of the battery is connected with the first output end of the power module through the DC-DC voltage reduction unit; and the power supply end of the battery is connected with the second output end of the power supply module.
Specifically, the power module includes a battery for supplying a direct current power, and a DC-DC voltage step-down unit for direct current voltage reduction. Specifically, the DC-DC voltage reduction unit may perform voltage reduction processing on a power supply provided by the battery to obtain a power supply required by the logic chip. Among them, the battery may be a lithium battery or the like. The voltage provided by the battery power supply terminal and the voltage obtained by the voltage reduction of the DC-DC voltage reduction unit can be set according to actual requirements, and are not specifically limited herein.
In one embodiment, as shown in fig. 3, the power module further comprises:
the solar panel is connected with a charging end of the battery; the solar panel is arranged on the side plate of the warning board body.
Particularly, the body is provided with the solar panel for charging the battery, and the power can be supplied continuously, so that the problem of replacing the battery of the electric power warning board is not needed to be considered, the electric power warning board can run continuously, and the trouble of manually replacing the battery is reduced. When the battery power of the traditional warning board is insufficient, the battery needs to be replaced by manual operation; when the number of the warning boards is too large, the warning boards are very complicated and inconvenient. According to the embodiment of the application, the solar panel is matched with the battery to form the solar power module, so that the operation of manually replacing the battery can be avoided.
In one example, the solar panel can be disposed in an opening of an upper side plate of the warning board body so that the solar panel is exposed to the outside.
In one embodiment, the power module further comprises:
the power switch is connected between the power supply end of the battery and the output end of the power module; the power switch is arranged on the side plate of the warning board body.
Specifically, the power module is further provided with a power switch, so that the power module can be conveniently disconnected or connected, and the operation flexibility of the embodiment of the application is improved.
In one embodiment, the logic chip is a not gate logic chip.
In particular, the logic chip may be used to execute not gate logic. Illustratively, when no induced voltage exists, the drain-source of the N-type MOS tube is cut off, the power supply module transmits a high level signal to the input end of the NOT gate logic chip, the NOT gate logic chip performs NOT gate conversion on the high level and then transmits a low level signal to the VCC end of the relay through the output end, the drive circuit of the relay is disconnected, and the normally closed contact end is connected with the common end; when the induction voltage is obtained, the drain-source of the N-type MOS tube is conducted, the drain electrode is grounded, the input end of the NOT gate logic chip is changed into a low level, after the NOT gate logic chip conducts NOT gate conversion on the low level, a high level signal is transmitted to the VCC end of the relay through the output end, a driving loop of the relay is conducted, and the normally-open contact end is conducted with the public end. Further, the relay can control the power supply circuit of the human body proximity sensing module to be switched on or switched off. The nearly electric induction in this application embodiment can mainly realize through power module, N type MOS pipe and NOT gate logic chip, and simple structure detects under the high-pressure condition and carries out nearly electric warning suggestion when having the live body to be close to, and nearly electric protection is effectual.
In one embodiment, the induced voltage module further comprises a resistor coupled between the first output of the power module and the input of the logic chip.
Particularly, the output end of the power supply module is connected with the input end of the logic chip through a resistor, and current can be limited through the resistor, so that the safety of the chip is guaranteed, and the reliability of the circuit is improved.
In one embodiment, the induced voltage module further comprises a light emitting diode connected to the VCC terminal of the relay.
In particular, the light emitting diode may be used to indicate the status of the drive circuit of the relay.
In one embodiment, the power module is provided with a charging hole.
Specifically, because of the charging hole, the power module can be charged by the charger in an emergency, and the reliability of the embodiment of the application is improved.
In one embodiment, the human proximity sensing module is a microwave radar sensing unit.
Particularly, in the human body approach sensing module, the infrared probe can lose effectiveness when the external environment reaches 37 ℃, and is not suitable for being used in summer, and the infrared probe has no penetrating function, cannot be concealed and is not easy to protect when being exposed outside. The microwave radar probe is used in the embodiment of the application, has penetration detection capability, can be concealed and protected easily, and is not influenced by the ambient temperature.
In one embodiment, the prompting module is a buzzer or an audible and visual alarm.
In one embodiment, as shown in fig. 4, the outdoor electric power warning board includes a warning board body 1, an opening is formed on an upper side panel of the warning board body 1, a power module body 3 is installed inside the upper side of the warning board body 1, and a solar panel 2 of the power module body 3 is exposed outside through the opening of the upper side panel of the body 1. An opening is reserved on the right side panel of the electric warning board body 1, and a power switch 4 of the power module body 3 can be exposed outside. The power module consists of a solar panel 2 and a 18000mAh (milliampere-hour) lithium battery. An induction voltage module body 5 is installed on the middle side inside the body, and the power module body 3 is connected with the induction voltage module body 5 through a DC-DC voltage reduction unit which is changed from 12V (volt) to 5V. The four corners of the warning board body 1 are provided with mounting holes 7, so that the warning board body 1 can be fixed on the electrical equipment shell. At the inside downside of body 1, install microwave radar induction unit body 6.
As shown in fig. 5, the power module is provided with a charging hole 8, and the power module can be charged by a charger in an emergency. The power module is provided with a discharge hole 9, the discharge hole 9 outputs two paths of power sources in parallel, the first path of power source supplies power to the induction voltage module body 5 through a 12V-to-5V DC-DC voltage reduction unit, and the second path of power source supplies power to the microwave radar induction unit body 6 through a 5V trigger relay of an internal circuit of the induction voltage module body 5.
As shown in fig. 6, the internal circuit elements of the induced voltage module body 5 include a 74HC04PW not-gate logic chip with an operating voltage of 5V, and a 5V operating power supply of the induced voltage module body is provided by a 12V solar power module after being stepped down by a DC-DC voltage step-down unit. The induction voltage module body 5 further comprises an N-channel enhancement type MOS tube, a light emitting diode, a 5V trigger relay and a 1/8W type carbon film resistor. When the grid antenna of the field effect tube has no induced voltage, the drain-source of the field effect tube is cut off, the 5V power supply is connected with the input end of the 1A of the NAND gate logic chip through the resistor, the 1A inputs a high level signal, and the 1Y outputs a low level signal through the chip to complete one-time NOT gate conversion, and at the moment, the 5V trigger relay and the light emitting diode cannot work. Illustratively, after a grid antenna of the field effect tube senses 50Hz alternating voltage, a forward voltage appears once every T/2 period, so that the drain-source of the field effect tube is conducted, after a reverse voltage appears again after the T/2 period, the drain-source of the field effect tube is cut off, and the alternating operation is repeated, so that under the condition that the field effect tube is cut off, a circuit cannot change, but every T/2 period, the field effect tube is conducted, because the drain electrode of the field effect tube is connected with a GND end, the 1A input end is changed from a high level to a low level, after passing through a NOT gate logic chip, the 1Y output is changed from the low level to the high level, and the light emitting diode and the 5V trigger relay reach the working voltage simultaneously to start to flicker and attract.
In one example, the microwave radar sensing unit can only turn on the power supply after the 5V trigger relay is pulled in due to the voltage sensed by the voltage sensing module. After the 5V trigger relay is disconnected due to the fact that the voltage sensing module cannot sense voltage, the microwave radar sensing unit stops working due to the fact that the power supply is disconnected, and therefore the function that the electric equipment automatically stops working when power failure overhauling is achieved.
As shown in fig. 7, the power module discharging hole 9 is connected to the positive input terminal 10 of the microwave radar sensing unit and the negative input terminal 11 of the microwave radar sensing unit through the 5V trigger relay of the internal circuit of the induced voltage module body 5, and the positive output terminal 12 of the microwave radar sensing unit and the negative output terminal 13 of the microwave radar sensing unit are connected to the buzzer. Illustratively, the positive electrode and the negative electrode of the input end of the microwave radar sensing unit are connected with a 12V direct-current power supply, and when a human body moves in the sensing range, the microwave radar sensing unit outputs the 12V direct-current power supply to enable the buzzer to give an alarm.
Based on above-mentioned structure, this application embodiment mountable microwave radar probe has the function that the response human body is close and report an emergency and ask for help or increased vigilance, and this function does not receive ambient temperature to influence, has and pierces through the detectivity, and the mountable is inside the warning sign, easily protects. Meanwhile, the warning board is provided with a voltage induction module, and the relay is closed only when the voltage is induced so that the microwave radar probe and the light emitting diode work; the light emitting diode has the effect of an electrified indicating lamp, and the induction voltage module can intelligently select whether to enable the microwave radar probe to work or not according to the induction voltage. In addition, the warning board is also provided with a solar power module, so that power can be continuously supplied under the condition that an external charger is not connected, and the manual battery replacement operation is avoided.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. An electric warning board is characterized by comprising a warning board body;
the warning board body is provided with:
the induction voltage module comprises a relay, a field effect tube, a logic chip and an antenna for acquiring induction voltage; the antenna is connected with the control end of the field effect tube; the first transmission end of the field effect transistor is connected with the input end of the logic chip; the VCC end of the relay is connected with the output end of the logic chip;
a first electrode of the human body proximity sensing module is connected with the common end of the relay, and a second electrode of the human body proximity sensing module is connected with the contact end of the relay;
and the prompting module is connected with the output end of the human body proximity sensing module.
2. The electric warning sign according to claim 1, wherein the warning sign body is further provided with a power supply module;
the first output end of the power supply module is connected with the input end of the logic chip;
the field effect transistor is an N-type MOS transistor; the control end of the field effect transistor is the grid electrode of the N-type MOS transistor, the first transmission end of the field effect transistor is the source electrode of the N-type MOS transistor, and the second transmission end of the field effect transistor is the drain electrode of the N-type MOS transistor;
and the drain electrode of the N-type MOS tube is grounded.
3. Electric power warning sign according to claim 2,
the second output end of the power supply module is connected between the first electrode of the human body proximity sensing module and the common end of the relay;
or the second output end of the power supply module is connected between the second electrode of the human body proximity sensing module and the contact end of the relay.
4. A power warning sign according to claim 3, characterized in that the power supply module comprises:
a DC-DC voltage reduction unit;
a battery; the power supply end of the battery is connected with the first output end of the power supply module through the DC-DC voltage reduction unit; and the power supply end of the battery is connected with the second output end of the power supply module.
5. A power warning sign according to claim 4, wherein the power module further comprises:
a solar panel connected to a charging terminal of the battery; the solar panel is arranged on the side plate of the warning board body.
6. A power warning sign according to claim 4, wherein the power module further comprises:
the power switch is connected between the power supply end of the battery and the output end of the power module; the power switch is arranged on the side plate of the warning board body.
7. A power warning sign according to claim 2, characterised in that the logic chip is a not gate logic chip.
8. The power warning sign of claim 2, wherein said induced voltage module further comprises a resistor connected between a first output of said power module and an input of said logic chip, and a light emitting diode connected to a VCC terminal of said relay;
the power module is provided with a charging hole.
9. An electric power warning sign according to any of claims 1 to 8, characterized in that the human proximity sensing module is a microwave radar sensing unit.
10. An electric power warning sign according to any one of claims 1 to 8, characterised in that the prompting module is a buzzer or an audible and visual warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020379567.5U CN212031585U (en) | 2020-03-23 | 2020-03-23 | Electric power warning board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020379567.5U CN212031585U (en) | 2020-03-23 | 2020-03-23 | Electric power warning board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212031585U true CN212031585U (en) | 2020-11-27 |
Family
ID=73487544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020379567.5U Active CN212031585U (en) | 2020-03-23 | 2020-03-23 | Electric power warning board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212031585U (en) |
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2020
- 2020-03-23 CN CN202020379567.5U patent/CN212031585U/en active Active
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