Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide integrated wireless pressure sensor,
The working condition of monitoring fire hydrant can be assisted, and can be improved equipment job stability.
To achieve the above object, the utility model provides following technical solution: integrated wireless pressure sensor, including
Detection components further include switching value input circuit, controller, telecommunication circuit, power supply circuit;The detection components, telecommunication circuit,
Switching value input circuit is connect with controller, and the power supply circuit and telecommunication circuit, controller, detection components, switching value are defeated
Enter circuit to be all connected with;The switching value input circuit includes first switch circuit and second switch circuit, the first switch electricity
Road includes switch SW1, Transient Suppression Diode T2;One end of the switch SW1 is connect after being connected with resistance R27 with controller,
The switch SW1 node connected to the controller is also connected with resistance R26 and is followed by power supply circuit;The switch SW1 relative resistance
The other end of R27 is grounded after being connected with resistance R30;One end of the Transient Suppression Diode T2 is connected to switch SW1 and control
On the node of device connection, other end ground connection.
The second switch circuit includes switch SW2, Transient Suppression Diode as a further improvement of the utility model,
T3;One end of the switch SW2 is grounded after being connected with resistance R33, and the other end is connected with resistance R35 and is followed by power supply circuit,
One end of the resistance R33 ground connection is also connect with controller;One end of the Transient Suppression Diode T3 is connected to resistance R33 and connects
The one end on ground, other end ground connection.
The telecommunication circuit includes communication chip and level shifting circuit, institute as a further improvement of the utility model,
It states level shifting circuit to connect to the control circuit, also be connect with communication chip, the communication chip connects to the control circuit.
The electrical level transferring chip includes triode Q3 as a further improvement of the utility model, the triode Q3
Base stage be connected with resistance R18 after be grounded, emitter ground connection, collector is connected with resistance R13 and is followed by power supply, the base of triode Q3
Pole is connected to control circuit after being also connected with resistance R15, and the collector of the triode Q3 is connect with communication chip.
The power supply circuit includes including battery, switching circuit, pressure regulation electricity as a further improvement of the utility model,
Road;The switching circuit includes metal-oxide-semiconductor Q5, capacitor C22, resistance R23;One end of the resistance R23 is connect with battery, another
End is connected to the grid of metal-oxide-semiconductor Q5;The source electrode of the metal-oxide-semiconductor Q5 is connect with battery, one end of the capacitor C22 and metal-oxide-semiconductor
The drain electrode of Q5 connects, other end ground connection;The grid of the metal-oxide-semiconductor Q5 also connects to the control circuit, drain electrode and regulating circuit, sampling
Circuit is all connected with, and with out-put supply to regulating circuit, the detection components are connect with regulating circuit.
The beneficial effects of the utility model, the detection components of setting can be detected to hydraulic and feed back to control
Device, the controller of setting can allow the more intelligent operation of circuit, and the amount of the opening the light input circuit of setting can allow the operation of user
More convenient, the telecommunication circuit of setting can allow controller and external server to carry out signal interaction, and related personnel can lead to
It crosses external server to be monitored the working condition of each fire hydrant, the power supply circuit of setting provides working power, allows circuit
More preferable operation, the Transient Suppression Diode T2 of setting can increase the stability of circuit.
Specific embodiment
The utility model is described in further detail below in conjunction with embodiment given by attached drawing.
Referring to Fig.1 shown in -4, the integrated wireless pressure sensor of the present embodiment, including detection components 1, it further include switch
Measure input circuit 2, controller 3, telecommunication circuit 4, power supply circuit 5;The detection components 1, telecommunication circuit 4, On-off signal electricity
Road 2 is connect with controller 3, the power supply circuit 5 and telecommunication circuit 4, controller 3, detection components 1, switching value input circuit 2
It is all connected with;The switching value input circuit 2 includes first switch circuit 52 and second switch circuit 52, the first switch circuit
52 include switch SW1, Transient Suppression Diode T2;One end of the switch SW1 is connect after being connected with resistance R27 with controller 3,
The node that the switch SW1 is connect with controller 3 is also connected with resistance R26 and is followed by power supply circuit 5;The switch SW1 is relatively electric
The other end of resistance R27 is grounded after being connected with resistance R30;One end of the Transient Suppression Diode T2 is connected to switch SW1 and control
On the node that device 3 processed connects, other end ground connection.
Wherein switching value input circuit 2, controller 3, telecommunication circuit 4, power supply circuit 5 are incorporated into a control box,
The control box does water-proofing treatment, while utilizing waterproof data line connecting detection component 1;The detection components 1 can use SIN-
P300 model can be used for detecting hydraulic pressure transmitter;It will also detection components 1 be arranged inside fire hydrant, and pass through flange form
Connection is sealed;Controller 3 can have the function of control circuit using what STM8 series monolithic and its peripheral circuit were constituted
Control assembly.Subsurface where the control box of setting may be mounted at the outside of fire hydrant or be embedded in fire hydrant, facilitates use
Family operates on it;When detection components 1 detect hydraulic signal, which can be sent to controller 3, controller
The hydraulic signal is sent to external server by telecommunication circuit 4 by 3 to be summarized data and is monitored, and administrative staff are just at this time
Can judge whether the working condition of each fire hydrant is stable by the observation to hydraulic signal, so as to on-call maintenance, avoid pair
Rescue impacts.
Through the above technical solutions, the both ends mutual conduction of switch SW1, power supply is electric at this time when user presses lower switch SW1
The power supply that road 5 exports, using resistance R27, is grounded after R26 after continuing through resistance R30 at this time, what controller 3 received
Level from height jump be it is low, it is lower that the resistance R27 being arranged at this time with the resistance value of resistance R30 compares R26;Such as resistance R27 adds
The resistance value of resistance R30 is 100 Europe, and resistance R26 resistance value is the Europe 4.7K, the node that resistance R27 is connect with resistance R26 at this time
The voltage assigned to low level not yet, while resistance R27 and resistance R30 also have certain filter action, and switch SW1 can be allowed to touch
Signal when hair is more stable, and the Transient Suppression Diode T2 being arranged can prevent the abnormal situation of power supply work
Under, closure switch SW1 causes big voltage to enter in controller 3, and the Transient Suppression Diode T2 of setting can be by the big electricity
Pressure is limited, and 5V is depressured to, and Transient Suppression Diode T2 can use PESD5V0S1BB model, voltage can be controlled
In 5V;The safety that can be improved circuit plays a protective role to controller 3, and then improves the stability of equipment work.
As an improved specific embodiment, the second switch circuit 52 includes switch SW2, Transient Suppression Diode
T3;One end of the switch SW2 is grounded after being connected with resistance R33, and the other end is connected with resistance R35 and is followed by power supply circuit 5,
One end of the resistance R33 ground connection is also connect with controller 3;One end of the Transient Suppression Diode T3 is connected to resistance R33
One end of ground connection, other end ground connection.
Through the above technical solutions, the power supply that power supply circuit 5 exports is after resistance R35 in user closure switch SW2
Passing through resistance R33, is being grounded after continuing through resistance R32 at this time, at this time can be larger by the prevention of resistance R32 setting, such as
Resistance R32 is the Europe 47K, and resistance R35 is the Europe 4.7K plus the resistance value of resistance R33, and resistance R32 is connected with resistance R33 at this time
The level Transient Suppression Diode T3 that jumps to height from low, while being arranged of node power supply work can be prevented abnormal
In the case where, closure switch SW2 causes big voltage to enter in controller 3, and the Transient Suppression Diode T3 of setting can be incited somebody to action
The big voltage is limited, and 5V is depressured to, and Transient Suppression Diode T3 can use PESD5V0S1BB model, can will be electric
Voltage-controlled system is in 5V;The safety that can be improved circuit plays a protective role to controller 3.
In addition, the default conditions of first switch circuit 52 and second switch circuit 52 are on the contrary, if switch SW1 and switch
In the inc situation of SW2, it is high level that first switch circuit 52, which is exported to the default level of controller 3,;And second switch
It is low level that circuit 52, which is exported to the default level of controller 3,;This opposite setting can adapt to the user more side of configuration
Formula improves the applicability of circuit.
As an improved specific embodiment, the telecommunication circuit 4 includes communication chip 41 and level shifting circuit 42,
The level shifting circuit 42 connects to the control circuit, and also connect with communication chip 41, the communication chip 41 and control circuit
Connection.
Through the above technical solutions, needing to send corresponding instruction to logical when controller 3 controls communication chip 41
Believe chip 41, signal can be on the weak side under certain interference for the instruction, it is possible to can not control communication chip 41, at this time
The signal can be amplified by level shifting circuit 42, increase discrimination.
As an improved specific embodiment, the electrical level transferring chip includes triode Q3, the triode Q3's
Base stage is grounded after being connected with resistance R18, and emitter ground connection, collector is connected with resistance R13 and is followed by power supply, the base stage of triode Q3
It is connected to control circuit after being also connected with resistance R15, the collector of the triode Q3 is connect with communication chip 41.
Through the above technical solutions, communication chip 41 can use NB-IOT module, when controller 3 sends instructions to communication
When chip 41, which is first into the base stage of triode Q3, and triode Q3 is connected at this time, and power supply passes through triode Q3 at this time
The level jump of ground connection, triode Q3 collector at this time is conveyed to communication chip 41 as amplified instruction, it is possible thereby to
Increase stability when controller 3 controls communication chip 41.
As an improved specific embodiment, the power supply circuit 5 includes including battery 51, switching circuit 52, adjusts
Volt circuit 53;The switching circuit 52 includes metal-oxide-semiconductor Q5, capacitor C22, resistance R23;One end of the resistance R23 and battery
51 connections, the other end are connected to the grid of metal-oxide-semiconductor Q5;The source electrode of the metal-oxide-semiconductor Q5 is connect with battery 51, the capacitor C22
One end connect with the drain electrode of metal-oxide-semiconductor Q5, the other end ground connection;The grid of the metal-oxide-semiconductor Q5 also connects to the control circuit, drain electrode with
Regulating circuit 53, sample circuit are all connected with, and with out-put supply to regulating circuit 53, the detection components 1 connect with regulating circuit 53
It connects.
Through the above technical solutions, user can be sent by server when user is to needing to hydraulic detect
Signal is detected to telecommunication circuit 4, which is transmitted to controller 3 after receiving detection signal, and controller 3 gives MOS at this time
The grid of pipe Q5 sends Continuity signal, and metal-oxide-semiconductor Q5 is connected at this time, and the power supply of the battery 51 of source electrode is exported from drain electrode, simultaneously should
Power supply enters regulating circuit 53, in sample circuit after capacitor C22 filtering, works and uses for these circuits.The power supply is logical
53 pressure regulation of regulating circuit is crossed to be entered later for the detection use of detection components 1 in detection components 1, only when user needs to carry out liquid
When the detection of position, controller 3 just sends detection signal to telecommunication circuit 4, and metal-oxide-semiconductor Q5 is just connected, and can save battery 51 in this way
Electricity consumption, extend device use the time.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.