CN109186796A - A kind of CT formula passive wireless temperature measuring device applied to switchgear - Google Patents
A kind of CT formula passive wireless temperature measuring device applied to switchgear Download PDFInfo
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- CN109186796A CN109186796A CN201811201762.2A CN201811201762A CN109186796A CN 109186796 A CN109186796 A CN 109186796A CN 201811201762 A CN201811201762 A CN 201811201762A CN 109186796 A CN109186796 A CN 109186796A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 46
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 45
- 239000000523 sample Substances 0.000 claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000001052 transient effect Effects 0.000 claims description 21
- 230000006698 induction Effects 0.000 claims description 16
- 230000001629 suppression Effects 0.000 claims description 16
- 230000015556 catabolic process Effects 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims 4
- 238000011105 stabilization Methods 0.000 claims 4
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000011946 reduction process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2215/00—Details concerning sensor power supply
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Abstract
本发明实施例涉及高压电气设备监测技术领域，具体而言，涉及一种应用于开关柜的CT式无源无线测温装置，包括测温单元和监控单元，测温单元包括测温探头、测温电路和供电电路，测温电路通信连接于监控单元，测温探头安装于一开关柜内的带电接头触点，测温探头通信连接于测温电路，监控单元用于接收测温电路发送的射频信号，将射频信号转换成数字信号并在一显示器上进行显示，供电电路的输入端电连接于开关柜的进线线缆、输出端电连接于测温电路，进线线缆中的交流电信号流入供电电路的输入端，经供电电路转换成稳态直流电信号之后从输出端流向测温电路，以实现对测温电路的供电，如此，能够对开关柜进行实时、准确地温度监测。
Embodiments of the present invention relate to the technical field of high-voltage electrical equipment monitoring, and in particular, to a CT-type passive wireless temperature measurement device applied to a switch cabinet, including a temperature measurement unit and a monitoring unit, where the temperature measurement unit includes a temperature measurement probe, a temperature measurement unit, and a temperature measurement unit. The temperature circuit and the power supply circuit, the temperature measurement circuit is communicatively connected to the monitoring unit, the temperature measurement probe is installed in a live connector contact in a switch cabinet, the temperature measurement probe is communicatively connected to the temperature measurement circuit, and the monitoring unit is used to receive the data sent by the temperature measurement circuit. The radio frequency signal is converted into a digital signal and displayed on a display. The input end of the power supply circuit is electrically connected to the incoming cable of the switch cabinet, and the output end is electrically connected to the temperature measurement circuit. The AC in the incoming cable is electrically connected. The electrical signal flows into the input end of the power supply circuit, and after being converted into a steady-state DC signal by the power supply circuit, flows from the output end to the temperature measurement circuit to supply power to the temperature measurement circuit. In this way, the switch cabinet can be monitored in real time and accurately.
Description
Technical field
The present embodiments relate to high voltage electric equipment monitoring technical fields, are applied to switch in particular to one kind
The CT formula passive wireless temperature measuring device of cabinet.
Background technique
Temperature always one very important parameter of formula, in many fields such as electric power, coal, medical treatment, military affairs and life, all
Need to use temperature measuring equipment to detect temperature.The real-time monitoring of temperature has become all trades and professions and is kept the safety in production and reduced damage
It becomes homeless one of the important measures taken.In industrial system, temperature is the important parameter for characterizing equipment and operating normally, with industry
The continuous growth of power load, in order to avoid the automatic monitoring because of emergency event caused by equipment heating, temperature has become
The important link of industry security production.
Certain defects existing for running electrical equipment will lead to part of appliance temperature anomaly increase, cause temperature with
The vicious circle of contact resistance value eventually leads to equipment cisco unity malfunction or even burns, causes great quality accident.Especially
Be for switchgear in high-voltage electrical equipment, the prior art be difficult in real time, accurately carry out temperature monitoring.
Summary of the invention
In view of this, the present invention provides a kind of CT formula passive wireless temperature measuring device applied to switchgear,
Switchgear can be carried out in real time, accurately temperature monitoring.
The embodiment of the invention provides a kind of CT formula passive wireless temperature measuring devices applied to switchgear, including temperature measuring unit
And monitoring unit；The temperature measuring unit includes temperature probe, temperature measurement circuit and power supply circuit；The temperature measurement circuit is communicatively coupled to
The monitoring unit；
The temperature probe is installed on the hot-line connector contact in a switchgear, and the temperature probe is communicatively coupled to described
Temperature measurement circuit；The temperature probe is used to detect the temperature signal of the hot-line connector contact, and the temperature signal is transmitted to
The temperature measurement circuit, the temperature measurement circuit are used to the temperature signal being converted into digital signal, the digital signal are converted
At radiofrequency signal, the radiofrequency signal is sent to the monitoring unit；
The radiofrequency signal is converted into digital signal and shown one by the monitoring unit for receiving the radiofrequency signal
Show and is shown on device；
The input terminal of the power supply circuit is electrically connected to the inlet wire cable of the switchgear, the output end of the power supply circuit
It is electrically connected to the temperature measurement circuit；Ac signal in the inlet wire cable flows into the input terminal of the power supply circuit, through institute
It states power supply circuit to be converted into flowing to the temperature measurement circuit from the output end of the power supply circuit after steady-state DC electric signal, with reality
Now to the power supply of the temperature measurement circuit.
Optionally, the power supply circuit includes power-supply circuit, rectification circuit, protection circuit and voltage regulator circuit；
The input terminal of the power-supply circuit is electrically connected to the inlet wire cable, and the output end of the power-supply circuit is electrically connected to
The input terminal of the rectification circuit, the output end of the rectification circuit are electrically connected to the input terminal of the protection circuit and described steady
The output end of the input terminal of volt circuit, the protection circuit is electrically connected to the input terminal of the voltage regulator circuit, the voltage regulator circuit
Output end be electrically connected to the temperature measurement circuit；
The power-supply circuit is used to the ac signal in the inlet wire cable carrying out range of decrease processing；Wherein, drop is completed
The ac signal of width processing flows to the rectification circuit；
The rectification circuit is used to the ac signal for completing range of decrease processing being converted into DC signal；Wherein, described
DC signal flows to the protection circuit；
The protection circuit is for judging whether the voltage value of the DC signal is more than setting breakdown voltage value, if institute
Voltage value is stated more than the setting breakdown voltage value, executes power-down operation, if the voltage value is no more than the setting breakdown potential
Pressure value, does not execute power-down operation；When it is described protect circuit not execute power-down operation when, the DC signal is from the rectified current
The output end on road flows to the input terminal of the voltage regulator circuit；
The voltage regulator circuit is used to the DC signal being converted into steady-state DC electric signal；Wherein, the stable state is straight
Temperature measurement circuit described in galvanic electricity signal flow is to realize the power supply to the temperature measurement circuit.
Optionally, the power-supply circuit includes induction coil and varistor；
The induction coil is sheathed on the inlet wire cable, and the induction coil is electrically connected to the input of the rectification circuit
End, the varistor are electrically connected between the induction coil and the rectification circuit；
The induction coil is used to incude the ac signal in the inlet wire cable, wherein the ac signal warp
The rectification circuit is flowed to after the varistor range of decrease processing.
Optionally, the varistor is S07K30.
Optionally, the rectification circuit is MB14S rectifier bridge.
Optionally, the protection circuit includes Transient Suppression Diode and storage capacitor；
One end of the Transient Suppression Diode is electrically connected to the output end of the rectification circuit, other end ground connection, described
One end of storage capacitor is electrically connected between the output end of the rectification circuit and the input terminal of the voltage regulator circuit, the other end
Ground connection；
If the voltage value of the DC signal is not above the setting breakdown voltage value of the Transient Suppression Diode, institute
Stating Transient Suppression Diode is off state, and the DC signal flows to described steady respectively from the output end of the rectification circuit
The input terminal of volt circuit and the storage capacitor；Wherein, the storage capacitor is filled for receiving the DC signal with realizing
Electricity；
If the voltage value of the DC signal is more than the setting breakdown voltage value of the Transient Suppression Diode, the wink
It is on state that state, which inhibits diode, and the DC signal flows to the transient state from the output end of the rectification circuit and inhibits two
Pole pipe；Wherein, the storage capacitor is used to discharge to the voltage regulator circuit.
Optionally, the voltage regulator circuit is TPS78230DDCR voltage stabilizing chip.
Optionally, the temperature measurement circuit includes CPU and signal adapter and wireless transmitter；
The output end of the voltage regulator circuit is electrically connected in the CPU, the signal adapter and the wireless transmission
Device；
The signal adapter is communicated to connect with the temperature probe and the CPU respectively, the CPU and described wireless
Transmitter communication connection, the wireless transmitter and the monitoring unit communicate to connect；
The signal adapter is used to receive the temperature signal of the temperature probe transmission, and the temperature signal is transmitted to
The CPU；
The CPU is used to the temperature signal being converted into digital signal, the digital signal is sent to described wireless
Transmitter；
The digital signal is converted into radiofrequency signal, by institute for receiving the digital signal by the wireless transmitter
It states radiofrequency signal and is sent to the monitoring unit.
Optionally, the wireless transmitter is APC300.
Optionally, the temperature probe is thermal resistance.
Beneficial effect
A kind of CT formula passive wireless temperature measuring device applied to switchgear provided in an embodiment of the present invention, power supply circuit can
It carries out taking electricity from the inlet wire cable of switchgear, then exports steady-state DC electric signal to temperature measurement circuit, to realize to thermometric electricity
The power supply on road so, it is possible the passive for realizing temperature measuring unit, save the replacement or separately for carrying out battery to temperature measuring unit
The time of charging, and then temperature measuring unit is improved to the real-time of the temperature monitoring of switchgear, temperature probe is small in size, Neng Gouan
Loaded on the hot-line connector contact in switchgear, compared to existing manual measurement, which can be to the temperature of switchgear
It is accurately monitored, in addition, temperature measurement circuit can carry out the interaction of radiofrequency signal between monitoring unit, thermometric route can
The temperature signal that temperature probe is acquired in real time is converted into radiofrequency signal and is sent to monitoring unit, and monitoring unit can believe radio frequency
It number is converted and shows and then realize the real-time monitoring to temperature.Therefore, which can be split
Close cabinet carry out in real time, accurately temperature monitoring.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of CT formula passive wireless temperature measuring device 100 provided by the embodiment of the present invention.
Fig. 2 is a kind of circuit diagram of temperature measuring unit 1 provided by the embodiment of the present invention.
Fig. 3 is a kind of structural block diagram of monitoring unit 2 provided by the embodiment of the present invention.
Fig. 4 is a kind of flow diagram of temperature monitoring method provided by the embodiment of the present invention.
Icon:
100-CT formula passive wireless temperature measuring device；
1- temperature measuring unit；11- temperature probe；12- temperature measurement circuit；123- wireless transmitter；13- power supply circuit；131- takes
Circuit；1311- induction coil；1312- varistor；132- rectification circuit；133- protects circuit；1331- transient state inhibits two
Pole pipe；1332- first capacitor；The second capacitor of 1333-；134- voltage regulator circuit；
2- monitoring unit；21- processor；22- wireless receiver；23- alarm.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiments of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention unless specifically defined or limited otherwise, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
Inventor further investigation reveals that, the prior art be difficult to carry out switchgear in real time, accurately temperature monitoring.On the one hand,
The geographical location of switchgear is more dispersed, remote, and according to traditional manual measurement, the period is long, at high cost, and working efficiency is low.
On the other hand, there is exposed high pressure in switchgear, space-closed is narrow, passes through manual measurement in time, it is also difficult to accurately be patrolled
Thermometric is looked into, in switchgear and in enclosed busbar, temperature over-range point is less susceptible to be found.
Defect present in the above scheme in the prior art, is that inventor is obtaining after practicing and carefully studying
As a result, therefore, the solution that the discovery procedure of the above problem and the hereinafter embodiment of the present invention are proposed regarding to the issue above
Scheme all should be the contribution that inventor makes the present invention in process of the present invention.
Based on the studies above, the embodiment of the invention provides a kind of CT formula passive and wireless thermometric dresses applied to switchgear
Set, switchgear can be carried out in real time, accurately temperature monitoring.
Fig. 1 shows a kind of CT formula passive wireless temperature measuring device 100 provided by the embodiment of the present invention, for switchgear
Temperature monitoring is carried out, which includes temperature measuring unit 1 and monitoring unit 2, wherein temperature measuring unit 1
The temperature signal that detects, and will test for the temperature to switchgear is sent to monitoring list by certain signal conversion
Member 2, in the present embodiment, monitoring unit 2 can be a PC machine, which can carry out real-time display by temperature signal and to this
Temperature signal carries out real-time monitoring, alarms in temperature signal exception.
Please continue to refer to Fig. 1, which includes temperature probe 11, temperature measurement circuit 12 and power supply circuit 13.Wherein,
Temperature probe 11 is installed on the hot-line connector contact in a switchgear, and temperature probe 11 is communicatively coupled to temperature measurement circuit 12, at this
In embodiment, temperature probe 11 is thermal resistance, when the temperature of hot-line connector contact changes, the resistance value meeting of temperature probe 11
It changes, temperature measurement circuit 12 can obtain corresponding temperature signal according to the variation of resistance value, then analyze temperature signal
And processing, in this way, compared to existing manual detection mode, the 11 deep enough inside switch cabinet of energy of temperature probe, to some passes
The connector contacts of key are detected.
For example, can be configured temperature probe 11 when switchgear powers off, when switchgear powers on, temperature probe
11 just can butt joint contact be measured in real time.And existing artificial detection is that staff detects on the spot mostly, one
As in the case of will do it live detection, may cause the risk of electric shock in this way, and the temperature probe 11 of this programme is used not have to then
The generation of such issues that worry.
Temperature measurement circuit 12 and monitoring unit 2 communicate to connect, and can be realized the transmission and interaction of signal.
Further, the input terminal of power supply circuit 13 is electrically connected to the output of the inlet wire cable, power supply circuit 13 of switchgear
End is electrically connected to temperature measurement circuit 12.It is appreciated that the power supply circuit 13 can carry out taking electricity from the inlet wire cable of switchgear, and supply
To temperature measurement circuit 12, so, it is possible to realize passive, neither employment worker in-site measurement, without go replacement battery or into
The additional charging operations of row, save the time of replacement battery, for example, using general battery if not using power supply circuit 13
Perhaps the power supply of other power supply units needs to turn off the switch cabinet when carrying out battery altering or power supply unit repairs for power supply,
May cause inconvenience, and electricity directly taken from the inlet wire cable of switchgear using power supply circuit 13, can guarantee power supply circuit 13 with
Switchgear powers on the synchronization of lower electricity, and then the real-time of temperature detection is improved from side.
Referring to Fig. 2, power supply circuit 13 includes power-supply circuit 131, rectification circuit 132, protection circuit 133 and voltage regulator circuit
134.Wherein, power-supply circuit 131 includes induction coil 1311 and varistor 1312, and protection circuit 133 includes that transient state inhibits two
Pole pipe 1331, first capacitor 1332 and the second capacitor 1333.The connection relationship to power supply circuit 13 and function are made further below
Illustrate:
Induction coil 1311 is sheathed on inlet wire cable, and induction coil 1311 is electrically connected to the input terminal of rectification circuit 132, pressure
Quick resistance 1312 is electrically connected between induction coil 1311 and rectification circuit 132.Wherein, induction coil 1311 is for incuding inlet wire
Ac signal in cable, the ac signal flow to rectification circuit 132 after the processing of 1312 range of decrease of varistor.At this
In embodiment, the model S07K30 of varistor 1312.
Rectification circuit 132 is used to the ac signal for completing range of decrease processing being rectified into DC signal, in the present embodiment
In, rectification circuit 132 is MB14S rectifier bridge.Further, the output end of rectification circuit 132 is electrically connected in protection circuit
133 input terminal and the input terminal of voltage regulator circuit 134.The output end of protection circuit 133 is electrically connected to the input of voltage regulator circuit 134
End.
Please continue to refer to Fig. 2, protecting circuit 133 includes Transient Suppression Diode 1331, first capacitor 1332, the second capacitor
1333 and other associated circuit components, wherein first capacitor 1332, the second capacitor 1333 and associated circuit components can be regarded as storing up
Energy capacitor, optionally, first capacitor 1332 and the second capacitor 1333 are super capacitor.
Further, one end of Transient Suppression Diode 1331 is electrically connected to the output end of rectification circuit 132, another termination
Ground, one end of storage capacitor are electrically connected between the output end of rectification circuit 132 and the input terminal of voltage regulator circuit 134, are another
End ground connection.
It is appreciated that having three accesses that can walk from the DC signal that the output end of rectification circuit 132 comes out: first is that transient state
Inhibit diode 1331, second is that storage capacitor, third is that voltage regulator circuit 134 input terminal.
In the present embodiment, Transient Suppression Diode 1331 has setting breakdown voltage value.
If the voltage value of DC signal is not above the setting breakdown voltage of Transient Suppression Diode 1331, transient state inhibits
Diode 1331 is off state (being equivalent to open circuit), and DC signal flows to pressure stabilizing from the output end of rectification circuit 132 respectively
The input terminal and storage capacitor of circuit 134, storage capacitor charge for receiving DC signal, and voltage regulator circuit 134 is used for
DC signal is converted into steady-state DC electric signal VCC supply temperature measurement circuit.
If the voltage value of DC signal is more than the setting breakdown voltage value of Transient Suppression Diode 1331, transient state inhibits two
Pole pipe 1331 becomes on state (being equivalent to short circuit), at this time DC signal can flow to Transient Suppression Diode 1331 without
The input terminal and storage capacitor for flowing to voltage regulator circuit 134 so, it is possible that the DC signal of too high voltages is avoided to burn out energy storage electricity
Hold and voltage regulator circuit 134.And storage capacitor discharges during this time, provides the short time to the input terminal of voltage regulator circuit 134
Power supply ensure that so set, can guarantee that entire power supply circuit 13 can continue to work in unexpected power down for a period of time
Reliability.In the present embodiment, Transient Suppression Diode 1331 is become on state to absorb voltage value being more than to set from off state
The process for determining breakdown voltage value can be understood as power-down operation.
In the present embodiment, voltage regulator circuit is TPS78230DDCR voltage stabilizing chip.
Please continue to refer to Fig. 2, temperature measurement circuit include CPU (being not shown in Fig. 2), signal adapter (being not shown in Fig. 2) and
Wireless transmitter 123, the output end of voltage regulator circuit 134 are electrically connected in CPU, signal adapter and wireless transmitter 123, letter
Number converter is communicated to connect with temperature probe 11 and CPU respectively, and CPU and wireless transmitter 123 communicate to connect, wireless transmitter
123 communicate to connect with monitoring unit 2.It is appreciated that signal adapter and temperature probe 11 form temperature sensor, in this implementation
In example, the model PT100 of temperature sensor, for example, signal adapter and wireless transmitter can be integrated with CPU, and
The present embodiment shown in Figure 2 is wireless transmitter 123.
Specifically, signal adapter is used to receive the temperature signal of the transmission of temperature probe 11, it will be understood that signal adapter
Actually received is due to the voltage change signal that the resistance of temperature probe 11 changes and generates, then by the voltage change
Signal is converted to corresponding temperature signal.The temperature signal is transmitted to CPU by signal adapter, and CPU is used to turn temperature signal
It changes digital signal into and carries out digital filtering and scale conversion etc. and calculate, digital signal is then sent to wireless transmitter 123,
Wireless transmitter 123 converts digital signals into radiofrequency signal, and radiofrequency signal is sent to monitoring unit 2.So far, temperature is completed
The whole process of acquisition and the transmission of degree, is below described further the correlation function of monitoring unit 2.
Fig. 3 shows a kind of structural block diagram of monitoring unit 2, and as seen from the figure, which includes processor 21, nothing
Line receiver 22 and alarm 23.Wherein, processor 21 is communicated to connect with wireless receiver 22 and alarm 23 respectively, is wirelessly connect
It receives device 22 and is used to receive the radiofrequency signal that the wireless transmitter 123 in Fig. 2 is sent, by radio signal transmission to processor 21, place
Radiofrequency signal is converted into digital signal by reason device 21, which is shown on a display, for example, processor 21
It converts and obtains a digital signal as 80 degrees Celsius, processor 21 can be determined that the temperature anomaly, sends and alarms to alarm 23
Instruction, alarm 23 are alarmed after receiving alarm command, wherein alarm 23 can pass through sound, photoelectricity, short message etc.
Mode is alarmed, with timely or foreseeability discovery and debugging, to ensure the safety of power equipment to the maximum extent
Stable operation.
Optionally, display can be the included display of PC machine, be also possible to the mobile terminal communicated to connect with PC machine
The display of institute's band.
Optionally, RS485, RS232 or WiFi communication, nothing can be passed through between wireless transmitter 123 and wireless receiver
Line receiver can also and communication of mobile terminal, realize data, information flexible interaction.Fig. 4 is please referred to, it is real for the present invention
A kind of flow diagram of temperature monitoring method provided by example is applied, the specific steps of this method are illustrated below:
Step S21, wireless receiver real-time reception radiofrequency signal, is sent to processor for radiofrequency signal.
Step S22, processor receive radiofrequency signal, radiofrequency signal are converted into digital signal, is judged in the digital signal
Whether the real-time temperature values for including are more than setting value.
Wherein, setting value can be preset by processor.
If being more than, step S23 is turned to, if being not above, turns to step S24.
Step S23, processor send alarm command to alarm, and alarm is alarmed according to alarm command.
Step S24, processor show digital signal.
It is shown it is appreciated that digital signal can be sent to external display by wireless receiver by processor,
For example, a mobile terminal can be sent to, user can be monitored by operating status of the mobile terminal to switchgear, mobile
Terminal can show by the figure of hommization, mobile terminal it is intuitive, reflect switchgear in time the case where.
Optionally, the corresponding digital signal of multiple switch cabinet can also be sent to mobile terminal and is monitored by processor,
For example, the temperature monitoring network of switchgears at different levels can be pre-established, processor can believe the corresponding number of assigned switch cabinet
Number being sent to mobile terminal is monitored.In other words, processor can both select one group of temperature sensor of a switchgear
The monitoring for carrying out temperature, the multiple switch cabinet that can also select region (area Ge Tai, a route) carry out the prison of temperature
Control.
The processor can also provide report, a variety of ways of presentation such as curve according to historical temperature information, facilitate user into
Row is checked.Processor, can be according to existing temperature data and its changing rule, according to set pre- when sending alarm command
Method of determining and calculating for user provide temperature prediction as a result, and prediction result is compared with setting value, when discovery has abnormal possibility
Send alarm command.
To sum up, a kind of CT formula passive wireless temperature measuring device applied to switchgear provided by the embodiment of the present invention, can
To switchgear carry out in real time, accurately temperature monitoring.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
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| CN201811201762.2A CN109186796A (en) | 2018-10-15 | 2018-10-15 | A kind of CT formula passive wireless temperature measuring device applied to switchgear |
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| CN201811201762.2A CN109186796A (en) | 2018-10-15 | 2018-10-15 | A kind of CT formula passive wireless temperature measuring device applied to switchgear |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109813437A (en) * | 2019-01-29 | 2019-05-28 | 武汉科瑞新电气自动化有限公司 | Passive and wireless infrared temperature measurement apparatus |
| CN109835452A (en) * | 2019-04-04 | 2019-06-04 | 浙江大学 | A kind of deep-sea temperature measuring equipment based on optical communication |
| GB2589407A (en) * | 2019-04-15 | 2021-06-02 | Heyuan Intelligence Tech Co Ltd | Self-powered wireless temperature measurement circuit and sensor |
| CN111551286A (en) * | 2020-06-28 | 2020-08-18 | 宁波送变电建设有限公司甬城配电网建设分公司 | Passive wireless temperature detection device |
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