CN213579512U - Monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor - Google Patents
Monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor Download PDFInfo
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- CN213579512U CN213579512U CN202121044110.XU CN202121044110U CN213579512U CN 213579512 U CN213579512 U CN 213579512U CN 202121044110 U CN202121044110 U CN 202121044110U CN 213579512 U CN213579512 U CN 213579512U
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Abstract
The utility model discloses a monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor relates to monitoring technology field. The sensor-based monitoring circuit comprises a timer circuit, a first switch circuit, a second switch circuit, a first power supply, a second power supply, a control circuit and a communication circuit; the first switch circuit is used for communicating a loop between the first power supply and the control circuit when receiving a first switch signal sent by the timer circuit; the second switching circuit is used for communicating a loop between the second power supply and the communication circuit when receiving a second switching signal sent by the timer circuit; the control circuit is used for receiving and storing the monitoring data sent by the sensor; the communication circuit is used for receiving the data to be sent by the control circuit and sending the data to the upper computer. The utility model discloses a timer circuit controls control circuit and communication circuit's power supply, and when control circuit and communication circuit standby, the deenergization reduces the power consumption when the standby.
Description
Technical Field
The utility model relates to a monitoring technology field especially relates to a monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor.
Background
The internet of things technology usually collects data through sensors, and such data monitoring devices usually work regularly, and data collection and communication are performed every time. At present, most data monitoring equipment has power consumption when standby, and after the battery power is exhausted, the battery needs to be replaced, or even directly scrapped, which undoubtedly brings great cost.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor aims at solving the technical problem that data monitoring equipment is high at power loss among the prior art.
In order to achieve the above object, the present invention provides a monitoring circuit based on a sensor, which comprises a timer circuit, a first switch circuit, a second switch circuit, a first power supply, a second power supply, a control circuit and a communication circuit, wherein the first switch circuit is respectively connected with the timer circuit, the first power supply and the control circuit, the second switch circuit is respectively connected with the timer circuit, the second power supply and the communication circuit, and the control circuit is respectively connected with the communication circuit and the sensor;
the first switching circuit is used for communicating a loop between the first power supply and the control circuit when receiving a first switching signal sent by the timer circuit;
the second switching circuit is used for communicating a loop between the second power supply and the communication circuit when receiving a second switching signal sent by the timer circuit;
the control circuit is used for receiving the monitoring data sent by the sensor and storing the monitoring data;
and the communication circuit is used for receiving the data to be sent by the control circuit and sending the data to be sent to the upper computer.
Further, the timer circuit includes: the first timing circuit is respectively connected with the third power supply and the first switch circuit, and the second timing circuit is respectively connected with the third power supply and the second switch circuit;
the third power supply is used for supplying power to the first timing circuit and the second timing circuit;
the first timing circuit is used for generating a first switching signal and sending the first switching signal to the first switching circuit;
and the second timing circuit is used for generating a second switching signal and sending the second switching signal to the second switching circuit.
Further, the first timing circuit includes: the pulse circuit is respectively connected with the third power supply and the counter, and the counter is connected with the first switch circuit;
the pulse circuit is used for generating a pulse signal and sending the pulse signal to the counter;
and the counter is used for generating a first switching signal according to the pulse signal.
Furthermore, the pulse circuit comprises a first NAND gate, a second NAND gate, a first resistor, a second resistor and a first capacitor;
the first input end of the first NAND gate is connected with the third power supply, the second input end of the first NAND gate is connected with the first end of the first resistor, the output end of the first NAND gate is respectively connected with the first end of the second resistor, the first input end and the second input end of the second NAND gate, the output end of the second NAND gate is respectively connected with the first switch circuit and the first end of the first capacitor, and the second end of the first capacitor is respectively connected with the second end of the first resistor and the second end of the second resistor.
Furthermore, the pulse circuit also comprises a third resistor, and the third resistor is a variable resistor;
the first end of the third resistor is connected with the first end of the second resistor, and the second end of the third resistor is respectively connected with the first end of the first resistor and the second end of the first capacitor.
Further, the first switch circuit comprises a first MOS transistor, a second MOS transistor, a fourth resistor, a fifth resistor, a sixth resistor and a seventh resistor;
the grid electrode of the first MOS tube is connected with the first end of the fourth resistor, the second end of the fourth resistor is respectively connected with the timer circuit and the first end of the fifth resistor, the second end of the fifth resistor is connected with the source electrode of the first MOS tube, the source electrode of the first MOS tube is grounded, the drain electrode of the first MOS tube is connected with the first end of the sixth resistor, the second end of the sixth resistor is respectively connected with the grid electrode of the second MOS tube and the first end of the seventh resistor, the source electrode of the second MOS tube is respectively connected with the second end of the seventh resistor and the first power supply, and the drain electrode of the second MOS tube is connected with the control circuit.
Furthermore, the monitoring circuit based on the sensor also comprises an alarm circuit, and the alarm circuit is connected with the control circuit;
and the alarm circuit is used for receiving the alarm signal sent by the control circuit and giving an alarm according to the alarm signal.
In order to achieve the above object, the present invention further provides a sensor-based monitoring device, which comprises the sensor-based monitoring circuit as described above.
In order to achieve the above object, the present invention further provides a traffic facility monitoring device, which comprises the sensor-based monitoring device, the tilt angle sensor and the temperature and humidity sensor, wherein the tilt angle sensor and the temperature and humidity sensor are both connected to a control circuit in the sensor-based monitoring device;
the inclination angle sensor is used for acquiring attitude information of the traffic facility and sending the attitude information to the control circuit;
and the temperature and humidity sensor is used for acquiring temperature and humidity information of the environment where the traffic facility is located and sending the temperature and humidity information to the control circuit.
Furthermore, the traffic facility monitoring device also comprises a positioning module, and the positioning module is connected with the control circuit;
and the positioning module is used for generating position information and sending the position information to the control circuit.
In the utility model, the monitoring circuit based on the sensor comprises a timer circuit, a first switch circuit, a second switch circuit, a first power supply, a second power supply, a control circuit and a communication circuit; the first switching circuit is used for communicating a loop between the first power supply and the control circuit when receiving a first switching signal sent by the timer circuit; the second switching circuit is used for communicating a loop between the second power supply and the communication circuit when receiving a second switching signal sent by the timer circuit; the control circuit is used for receiving the monitoring data sent by the sensor and storing the monitoring data; and the communication circuit is used for receiving the data to be sent by the control circuit and sending the data to be sent to the upper computer. The utility model discloses a timer circuit controls control circuit and communication circuit's power supply, and when control circuit and communication circuit standby, the cut-off power supply reduces the power consumption when the standby, has improved the life of power.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a first embodiment of a sensor-based monitoring circuit according to the present invention;
fig. 2 is a schematic diagram of a second embodiment of the sensor-based monitoring circuit according to the present invention;
fig. 3 is a circuit structure diagram of an embodiment of the pulse circuit of the present invention;
fig. 4 is a circuit structure diagram of an embodiment of the first switch circuit of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
500 | |
| 1001 | |
600 | Control circuit |
| 1002 | A |
700 | |
| 1003 | Second timing circuit | N1~N2 | First to |
| 200 | First switch circuit | R1~R7 | First to |
| 300 | Second switch circuit | Q1~Q2 | First to second MOS transistors |
| 400 | A first power supply | C1 | First capacitor |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a frame of a first embodiment of a sensor-based monitoring circuit according to the present invention.
In the first embodiment, the sensor-based monitoring circuit includes a timer circuit 100, a first switch circuit 200, a second switch circuit 300, a first power supply 400, a second power supply 500, a control circuit 600, and a communication circuit 700, the first switch circuit 200 is connected to the timer circuit 100, the first power supply 400, and the control circuit 600, respectively, the second switch circuit 300 is connected to the timer circuit 100, the second power supply 500, and the communication circuit 700, respectively, and the control circuit 600 is connected to the communication circuit 700 and the sensor, respectively.
It should be noted that the first power source 400 and the second power source 500 may be battery power sources, such as button batteries. In a specific implementation, the first power source 400 and the second power source 500 may be respectively powered by independent batteries, or may be powered by the same battery. The voltages of the first power supply 400 and the second power supply 500 may be set according to requirements, such as 3V, 5V, or 12V, and the embodiment is not limited thereto.
In this embodiment, the first power source 400 and the second power source 500 may also be rechargeable batteries, and the sensor-based monitoring circuit may also include a solar charging circuit, which is composed of a solar panel and a voltage conversion circuit. The solar charging circuit may charge the first power source 400 and the second power source 500, thereby extending the service life of the power sources.
The first switch circuit 200 is configured to connect a loop between the first power supply 400 and the control circuit 600 when receiving the first switch signal sent by the timer circuit 100. The second switching circuit 300 is configured to connect the loop between the second power supply 500 and the communication circuit 700 when receiving the second switching signal sent by the timer circuit 100.
The first and second switching signals may be voltage signals, and the timer circuit 100 outputs the voltage signals, which may be high level or low level, to the first and second switching circuits 200 and 300 when the internal timing time reaches the preset time. The timing time may be set as required, for example, one hour or two hours, and the output time of the first switching signal and the second switching signal may not be synchronized, for example, the timer circuit 100 outputs the first switching signal once every one hour and outputs the second switching signal once every four hours.
The first switch circuit 200 and the second switch circuit 300 may be composed of switch tubes, and are in a normally open state when not receiving the first switch signal and the second switch signal, and are switched from the normally open state to the normally closed state when receiving the first switch signal and the second switch signal, so that the first power supply 400 supplies power to the control circuit 600, and the second power supply 500 supplies power to the communication circuit 700.
And the control circuit 600 is configured to receive the monitoring data sent by the sensor and store the monitoring data. And the communication circuit 700 is used for receiving the data to be sent by the control circuit and sending the data to be sent to the upper computer.
The sensor may include a speed sensor, an inclination sensor, a temperature and humidity sensor, a gas sensor, a distance measuring unit, or the like, and the specific type of the sensor is determined according to the measurement object, which is not limited in this embodiment. The control circuit 600 is mainly composed of a microprocessor, and after power is supplied, analyzes a sensing signal transmitted by the sensor to obtain monitoring data, and stores the monitoring data in a memory. The acquisition and analysis of sensor data has been a mature technology, and this embodiment is not described herein.
The communication circuit 700 may be composed of an NB-IOT (Narrow Band Internet of Things) communication circuit, and the communication circuit 700 communicates with an upper computer based on an NB-IOT related protocol, where the upper computer may be a central control device, such as a server; or gateway type devices.
After the communication circuit 700 is powered on, a communication signal is sent to the control circuit 600, so that the control circuit 600 extracts the stored monitoring data from the memory and feeds the monitoring data back to the communication circuit 700 as data to be sent. The communication circuit 700 encodes and modulates data to be transmitted, obtains a corresponding electromagnetic wave signal, and communicates with an upper computer based on the electromagnetic wave signal. The NB-IOT communication circuit also has mature technology, and this embodiment is not described herein.
In this embodiment, the sensor-based monitoring circuit further comprises an alarm circuit, the alarm circuit being connected to the control circuit; and the alarm circuit is used for receiving the alarm signal sent by the control circuit and giving an alarm according to the alarm signal.
It should be noted that the sensor-based monitoring circuit is usually provided at a corresponding facility when the sensor-based monitoring circuit is used to monitor the facility. In a special case, after the related facilities are damaged, in order to avoid loss, the control circuit 600 drives the alarm circuit to alarm. For example, when the control circuit 600 detects that the tilt angle signal transmitted by the tilt angle sensor is greater than a preset value, it may be determined that the monitoring facility is tilted; at this time, the alarm circuit can be driven to alarm. The alarm circuit can be composed of a buzzer or an LED lamp, and the alarm circuit also has mature technology, and the implementation mode is not described herein.
In a first embodiment, a sensor-based monitoring circuit includes a timer circuit, a first switching circuit, a second switching circuit, a first power supply, a second power supply, a control circuit, and a communication circuit; the first switching circuit is used for communicating a loop between the first power supply and the control circuit when receiving a first switching signal sent by the timer circuit; the second switching circuit is used for communicating a loop between the second power supply and the communication circuit when receiving a second switching signal sent by the timer circuit; the control circuit is used for receiving the monitoring data sent by the sensor and storing the monitoring data; and the communication circuit is used for receiving the data to be sent by the control circuit and sending the data to be sent to the upper computer. The utility model discloses a timer circuit controls control circuit and communication circuit's power supply, and when control circuit and communication circuit standby, the cut-off power supply reduces the power consumption when the standby, has improved the life of power.
Referring to fig. 2, fig. 2 is a schematic diagram of a second embodiment of the monitoring circuit based on a sensor according to the present invention. Based on above-mentioned first embodiment, the utility model provides a monitoring circuit's second embodiment based on sensor.
In the second embodiment, the timer circuit 100 includes a third power supply 1001, a first timing circuit 1002, and a second timing circuit 1003, the first timing circuit 1002 being connected to the third power supply 1001 and the first switch circuit 200, respectively, and the second timing circuit 1003 being connected to the third power supply 1001 and the second switch circuit 300, respectively. A third power supply 1001 for supplying power to the first timing circuit 1002 and the second timing circuit 1003; a first timing circuit 1002, configured to generate a first switching signal and send the first switching signal to the first switching circuit 200; the second timing circuit 1003 is configured to generate a second switching signal and send the second switching signal to the second switching circuit 300.
It should be noted that the third power supply 1001 may be the same power supply as the first power supply 400 and the second power supply 500, or may be an independent power supply, and the setting of the first power supply 400 and the second power supply 500 may also be applied to the third power supply, which may be specifically referred to in the first embodiment.
In this embodiment, the first switching signal and the second switching signal are controlled by separate timing circuits, so that the first switching signal and the second switching signal can be triggered according to different periods. In concrete implementation, the circuit configurations of the first and second timing circuits 1002 and 1003 may be the same or different, and in this embodiment, the circuit configurations of both circuits are the same.
In this embodiment, the first timing circuit 1002 includes: the pulse circuit is respectively connected with the third power supply and the counter, and the counter is connected with the first switch circuit; the pulse circuit is used for generating a pulse signal and sending the pulse signal to the counter; and the counter is used for generating a first switching signal according to the pulse signal.
It should be noted that the counter may be an 8-bit counter or a 12-bit counter as needed. The counter counts for one time after receiving the pulse signal for one time, and outputs a first switching signal after the counting number reaches a preset number. The period and the count number of the pulse signal are set according to the period of the first switching signal, which is not limited in this embodiment.
Referring to fig. 3, fig. 3 is a circuit structure diagram of an embodiment of the pulse circuit of the present invention.
As shown in fig. 3, the pulse circuit includes a first nand gate N1, a second nand gate N2, a first resistor R1, a second resistor R2, and a first capacitor C1; a first input end of the first nand gate N1 is connected to the third power supply 1001, a second input end of the first nand gate N1 is connected to a first end of the first resistor R1, an output end of the first nand gate N1 is connected to a first end of the second resistor R2, a first input end and a second input end of the second nand gate N2, an output end of the second nand gate N2 is connected to the first switch circuit 200 and a first end of the first capacitor C1, and a second end of the first capacitor C1 is connected to a second end of the first resistor R1 and a second end of the second resistor R2.
A switch may be disposed between the first input terminal of the first nand gate N1 and the third power supply 1001 to control the on and off of the pulse circuit. After the pulse circuit is powered on, oscillation is realized through the NAND gate, and a pulse signal is output. The period of the pulse signal is determined by the specific parameters of the first resistor R1, the second resistor R2 and the first capacitor C1.
In this embodiment, the pulse circuit further includes a third resistor R3, and the third resistor R3 is a variable resistor;
a first end of the third resistor R3 is connected to a first end of the second resistor R2, and a second end of the third resistor R3 is connected to a first end of the first resistor R1 and a second end of the first capacitor C1, respectively.
It can be understood that the third resistor R3 is mainly used for adjusting the period of the pulse signal, and by adjusting the resistance of the third resistor R3, the parallel resistance of the second resistor R2 and the third resistor R3 can be adjusted, thereby adjusting the period of the pulse signal.
Further, referring to fig. 4, fig. 4 is a circuit structure diagram of an embodiment of the first switch circuit of the present invention.
In the present embodiment, the first switch circuit 200 includes a first MOS transistor Q1, a second MOS transistor Q2, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. The gate of the first MOS transistor Q1 is connected to the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the first ends of the timer circuit 100 and the fifth resistor R5, the second end of the fifth resistor R5 is connected to the source of the first MOS transistor Q1, the source of the first MOS transistor Q1 is grounded, the drain of the first MOS transistor Q1 is connected to the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected to the gate of the second MOS transistor Q2 and the first end of the seventh resistor R7, the source of the second MOS transistor Q2 is connected to the second end of the seventh resistor R7 and the first power supply 400, and the drain of the second MOS transistor Q2 is connected to the control circuit 600.
The first MOS transistor Q1 may be an NMOS transistor, and the second MOS transistor Q2 may be a PMOS transistor.
The first MOS transistor Q1 is turned on when the gate receives the first switching signal of high level. Meanwhile, the sixth resistor R6 and the seventh resistor R7 divide the voltage to make the voltage between the gate and the source of the second MOS transistor Q2 smaller than the turn-on voltage, so that the second MOS transistor Q2 is turned on, and the first power supply 400 supplies power to the control circuit 600.
It should be noted that the first switch circuit 200 is mainly composed of MOS transistors, and has low bias current and low current consumption, thereby avoiding power consumption of the switch circuit. In addition, the second switching circuit 300 may adopt the same configuration as the first switching circuit 200.
In the second embodiment, the first switching signal and the second switching signal are respectively controlled by using independent timing circuits, so that the first switching signal and the second switching signal can be triggered according to different periods, and the timing control is more flexible. Meanwhile, the switch circuit is composed of MOS tubes, so that bias current is low when the switch circuit is switched on, the consumption of current is low, and the consumption of the switch circuit on a power supply is avoided.
In order to achieve the above object, the present invention further provides a sensor-based monitoring device, which comprises the sensor-based monitoring circuit as described above. The specific structure of the sensor-based circuit refers to the above embodiments, and since the present device adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
In order to achieve the above object, the utility model discloses still provide a traffic facilities monitoring devices, traffic facilities monitoring devices include as above-mentioned monitoring devices based on the sensor, inclination sensor and temperature and humidity sensor all with based on the control circuit connection among the monitoring devices of sensor. The inclination angle sensor is used for acquiring attitude information of the traffic facility and sending the attitude information to the control circuit; and the temperature and humidity sensor is used for acquiring temperature and humidity information of the environment where the traffic facility is located and sending the temperature and humidity information to the control circuit.
It should be noted that the transportation facilities include a signboard, a road guardrail, and the like. The inclination angle sensor and the temperature and humidity sensor can be mounted on a traffic facility, and collect relevant data of the traffic facility as monitoring data. The monitoring device based on the sensor collects monitoring data according to a preset time interval and sends the monitoring data to the upper computer according to the preset time interval.
Furthermore, the traffic facility monitoring device also comprises a positioning module, and the positioning module is connected with the control circuit; and the positioning module is used for generating position information and sending the position information to the control circuit.
It should be noted that, in order to more effectively monitor the traffic facilities, the embodiment may also locate the traffic facilities through the location module, and send the location information and the monitoring data to the upper computer together. The positioning module can adopt a GPS module, and the position information can be latitude and longitude information.
The specific structure of the sensor-based monitoring device refers to the above embodiments, and since the traffic facility monitoring device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
It should be noted that, in the practical application of the present invention, the software program is inevitably applied, but the applicant states here that the software program applied in the embodiment is the prior art, and in the present application, the modification and protection of the software program are not involved, but only the protection of the hardware architecture designed for the purpose of the present invention.
Claims (10)
1. A sensor-based monitoring circuit is characterized by comprising a timer circuit, a first switch circuit, a second switch circuit, a first power supply, a second power supply, a control circuit and a communication circuit, wherein the first switch circuit is respectively connected with the timer circuit, the first power supply and the control circuit, the second switch circuit is respectively connected with the timer circuit, the second power supply and the communication circuit, and the control circuit is respectively connected with the communication circuit and a sensor;
the first switch circuit is used for communicating a loop between the first power supply and the control circuit when receiving a first switch signal sent by the timer circuit;
the second switching circuit is used for communicating a loop between the second power supply and the communication circuit when receiving a second switching signal sent by the timer circuit;
the control circuit is used for receiving the monitoring data sent by the sensor and storing the monitoring data;
and the communication circuit is used for receiving the data to be sent by the control circuit and sending the data to be sent to an upper computer.
2. The sensor-based monitoring circuit of claim 1, wherein the timer circuit comprises: the first timing circuit is respectively connected with the third power supply and the first switch circuit, and the second timing circuit is respectively connected with the third power supply and the second switch circuit;
the third power supply is used for supplying power to the first timing circuit and the second timing circuit;
the first timing circuit is used for generating a first switching signal and sending the first switching signal to the first switching circuit;
the second timing circuit is configured to generate a second switching signal and send the second switching signal to the second switching circuit.
3. The sensor-based monitoring circuit of claim 2, wherein the first timing circuit comprises: the pulse circuit is respectively connected with the third power supply and the counter, and the counter is connected with the first switch circuit;
the pulse circuit is used for generating a pulse signal and sending the pulse signal to the counter;
the counter is used for generating a first switching signal according to the pulse signal.
4. The sensor-based monitoring circuit of claim 3, wherein the pulse circuit comprises a first NAND gate, a second NAND gate, a first resistor, a second resistor, and a first capacitor;
the first input end of the first nand gate is connected with the third power supply, the second input end of the first nand gate is connected with the first end of the first resistor, the output end of the first nand gate is respectively connected with the first end of the second resistor, the first input end and the second input end of the second nand gate, the output end of the second nand gate is respectively connected with the first switch circuit and the first end of the first capacitor, and the second end of the first capacitor is respectively connected with the second end of the first resistor and the second end of the second resistor.
5. The sensor-based monitoring circuit of claim 4, wherein the pulse circuit further comprises a third resistor, the third resistor being a variable resistor;
the first end of the third resistor is connected with the first end of the second resistor, and the second end of the third resistor is respectively connected with the first end of the first resistor and the second end of the first capacitor.
6. The sensor-based monitoring circuit of any of claims 1-5, wherein the first switching circuit comprises a first MOS transistor, a second MOS transistor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor;
the grid of the first MOS tube is connected with the first end of the fourth resistor, the second end of the fourth resistor is respectively connected with the timer circuit and the first end of the fifth resistor, the second end of the fifth resistor is connected with the source electrode of the first MOS tube, the source electrode of the first MOS tube is grounded, the drain electrode of the first MOS tube is connected with the first end of the sixth resistor, the second end of the sixth resistor is respectively connected with the grid of the second MOS tube and the first end of the seventh resistor, the source electrode of the second MOS tube is respectively connected with the second end of the seventh resistor and the first power supply, and the drain electrode of the second MOS tube is connected with the control circuit.
7. The sensor-based monitoring circuit of any of claims 1-5, further comprising an alarm circuit, the alarm circuit coupled to the control circuit;
and the alarm circuit is used for receiving the alarm signal sent by the control circuit and giving an alarm according to the alarm signal.
8. A sensor-based monitoring device, characterized in that the sensor-based monitoring device comprises a sensor-based monitoring circuit according to any of claims 1-7.
9. A transportation facility monitoring device, comprising the sensor-based monitoring device of claim 8, an inclination sensor, and a temperature and humidity sensor, wherein the inclination sensor and the temperature and humidity sensor are connected to a control circuit in the sensor-based monitoring device;
the inclination angle sensor is used for collecting attitude information of the traffic facility and sending the attitude information to the control circuit;
the temperature and humidity sensor is used for collecting temperature and humidity information of an environment where the traffic facility is located and sending the temperature and humidity information to the control circuit.
10. The transportation monitoring device of claim 9, further comprising a positioning module coupled to the control circuit;
and the positioning module is used for generating position information and sending the position information to the control circuit.
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| CN202121044110.XU CN213579512U (en) | 2021-05-17 | 2021-05-17 | Monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor |
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| CN202121044110.XU CN213579512U (en) | 2021-05-17 | 2021-05-17 | Monitoring circuit, monitoring devices and traffic facilities monitoring devices based on sensor |
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| CN213579512U true CN213579512U (en) | 2021-06-29 |
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