阅读说明：本技术 基于热释电传感器的高压开关柜温度监测方法及系统 (Temperature of high-tension switch cabinet monitoring method and system based on pyroelectric sensor ) 是由 彭兆裕 岳丹 龚泽威一 洪志湖 代维菊 文刚 颜冰 马御棠 于 2019-09-06 设计创作，主要内容包括：本申请公开了一种基于热释电传感器的高压开关柜温度监测方法及系统,所述方法包括：在高压开关柜的关键位置处设置热释电红外传感器；通过热释电红外传感器测量高压开关柜关键位置处的温度数据；将温度数据与设定预警值进行比较,判断温度数据是否异常；若温度数据异常,则唤醒报警电路进行报警；保存温度数据与报警信息。本申请提供的监测方法通过热释电红外传感器在线监测开关柜关键部位的温度,采用非接触式、分布式的探测手段,实现了在开关柜外对高压开关柜关键位置的温度监测,同时根据温升程度发出不同级别的警报,提醒工作人员开关柜发热异常,避免了开关柜由于发热引发事故。(This application discloses a kind of temperature of high-tension switch cabinet monitoring method and system based on pyroelectric sensor, which comprises pyroelectric infrared sensor is set at the key position of high-tension switch cabinet；The temperature data at high-tension switch cabinet key position is measured by pyroelectric infrared sensor；Temperature data is compared with setting early warning value, judges whether temperature data is abnormal；If temperature data is abnormal, wakes up warning circuit and alarm；Storage temperature data and warning message.Monitoring method provided by the present application monitors the temperature of switchgear key position on-line by pyroelectric infrared sensor, using contactless, distributed detection means, it realizes outside switchgear to the temperature monitoring of high-tension switch cabinet key position, the alarm of different stage is issued according to temperature rise degree simultaneously, it reminds the fever of staff's switchgear abnormal, avoids switchgear due to initiation accident of generating heat.)

1. a kind of temperature of high-tension switch cabinet monitoring method based on pyroelectric sensor, which is characterized in that the described method includes:

Pyroelectric infrared sensor is set at the key position of high-tension switch cabinet；

The temperature data at the high-tension switch cabinet key position is measured by the pyroelectric infrared sensor；

The temperature data is compared with setting early warning value, judges whether the temperature data is abnormal；

If the temperature data is abnormal, wakes up warning circuit and alarm；

Save the temperature data and warning message.

2. the method according to claim 1, wherein measuring the high pressure by the pyroelectric infrared sensor Temperature data at switchgear key position, comprising:

The pyroelectric infrared sensor receives the infrared radiation signal at the high-tension switch cabinet key position；

Received infrared radiation signal is converted into voltage signal；

The temperature data at the high-tension switch cabinet key position is obtained according to the voltage signal.

3. the method according to claim 1, wherein judging whether the temperature data is abnormal, comprising:

Judge whether the temperature data is more than setting early warning value；

If the temperature data is more than the setting early warning value, determine that the temperature data is abnormal.

4. the method according to claim 1, wherein judging whether the temperature data is abnormal, comprising:

Calculate the temperature rise of temperature within a limited period of time at the high-tension switch cabinet key position；

Judge whether the temperature rise is more than setting early warning value；

If the temperature rise is more than the setting early warning value, determine that the temperature data is abnormal.

5. the method according to claim 1, wherein further include:

Judge whether the warning circuit needs to reset；

If the warning circuit needs to reset, returns and continue monitoring temperature data；

If the warning circuit is not required to reset, warning message is saved, is returned after delay predetermined time and continues monitoring temperature data.

6. a kind of temperature of high-tension switch cabinet based on pyroelectric sensor monitors system, which is characterized in that including rpyroelectric infrared Sensor and single-chip microcontroller, wherein

The pyroelectric infrared sensor is arranged at the key position of the high-tension switch cabinet, the pyroelectric infrared sensor It is connect with the single-chip microcomputer signal；

The single-chip microcontroller includes radio receiving transmitting module, MCU and warning circuit, the pyroelectric infrared sensor and the wireless receipts Module by signal connection is sent out, the radio receiving transmitting module, the MCU and the warning circuit are sequentially connected electrically.

7. system according to claim 6, which is characterized in that the radio receiving transmitting module includes transmitting unit and receives single Member, the pyroelectric infrared sensor connect one to one with the transmitting unit；

The receiving end of the receiving unit is connect with multiple transmitting units, the output end of the receiving unit and the MCU Connection.

8. system according to claim 7, which is characterized in that between the pyroelectric infrared sensor and the transmitting unit Signal effective propagation path be 700m.

9. system according to claim 6, which is characterized in that the MCU includes:

Data acquisition unit, for receiving the temperature data of the pyroelectric infrared sensor acquisition, and to the temperature data It is shown and is alarmed；

Data main control unit, for saving the temperature data and warning message.

10. system according to claim 6, which is characterized in that further include reset circuit, the reset circuit with it is described MCU electrical connection.

Technical field

This application involves technical field of power systems more particularly to a kind of high-tension switch cabinet temperature based on pyroelectric sensor Spend monitoring method and system.

Background technique

High-tension switch cabinet is as one of the important equipment in substation, the portions such as contact and bus bar junction in switchgear Position can generate heat in long-term operational process because aging or contact resistance are excessive, since the temperature monitoring of these heating positions is tired Difficulty, can not real-time monitoring, often eventually lead to the generation of fire incident.It had been sent out in recent years in grid company system Zhong You substation The accident that a lot of switchgears are burnt by overheat was given birth to, or even the equipment for causing entire hyperbaric chamber is damaged, and large-area power-cuts is caused. The scope of power outage that replacement inspection switch cabinet is related to is generally relatively wide, and maintenance time is long, entirely opens the damage of hyperbaric chamber equipment if encountered Serious conditions, from the point of view of the power distribution network situation of current National most area, if the substation section in a urban district Full cut-off, the power distribution network in city powerlessly turn at all for all loads, especially in the annual summer peak meeting of power grid and meet kurtosis winter etc. Big load condition.How enclosed switchgear overheat the main reason for is quickly grasped, and real-time detection inside switch cabinet part mentions Before detect the abnormal overheat condition of high-tension switch cabinet, and corresponding maintenance measure is taken immediately, to guaranteeing electricity net safety stable fortune Row guarantees to have important practical significance to the lasting reliable power supply of big customer.

High-tension switch cabinet is long-standing due to failure caused by generating heat, and correlative study unit has also carried out it corresponding whole Change, but at present switchgear due to fever cause accident there are no more complete prevention and control means so far.Study carefully it Reason, first is that structure is complicated for inside switch cabinet, configuration is cumbersome, is difficult to realize temperature detection outside switchgear.Second is that not having The integrated treatment of high-tension switch cabinet is carried out using new method, new technology.

Summary of the invention

This application provides a kind of temperature of high-tension switch cabinet monitoring method and system based on pyroelectric sensor, to solve The difficult problem of temperature of high-tension switch cabinet monitoring at present.

In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:

In a first aspect, the embodiment of the present application discloses a kind of temperature of high-tension switch cabinet monitoring side based on pyroelectric sensor Method, which comprises

Pyroelectric infrared sensor is set at the key position of high-tension switch cabinet；

The temperature data at the high-tension switch cabinet key position is measured by the pyroelectric infrared sensor；

The temperature data is compared with setting early warning value, judges whether the temperature data is abnormal；

If the temperature data is abnormal, wakes up warning circuit and alarm；

Save the temperature data and warning message.

Optionally, the temperature number at the high-tension switch cabinet key position is measured by the pyroelectric infrared sensor According to, comprising:

The pyroelectric infrared sensor receives the infrared radiation signal at the high-tension switch cabinet key position；

Received infrared radiation signal is converted into voltage signal；

The temperature data at the high-tension switch cabinet key position is obtained according to the voltage signal.

Optionally, judge whether the temperature data is abnormal, comprising:

Judge whether the temperature data is more than setting early warning value；

If the temperature data is more than the setting early warning value, determine that the temperature data is abnormal.

Optionally, judge whether the temperature data is abnormal, comprising:

Calculate the temperature rise of temperature within a limited period of time at the high-tension switch cabinet key position；

Judge whether the temperature rise is more than setting early warning value；

If the temperature rise is more than the setting early warning value, determine that the temperature data is abnormal.

Optionally, further includes:

Judge whether the warning circuit needs to reset；

If the warning circuit needs to reset, returns and continue monitoring temperature data；

If the warning circuit is not required to reset, warning message is saved, is returned after delay predetermined time and continues monitoring temperature Data.

Second aspect, the embodiment of the present application disclose a kind of temperature of high-tension switch cabinet monitoring system based on pyroelectric sensor System, including pyroelectric infrared sensor and single-chip microcontroller, wherein

The pyroelectric infrared sensor is arranged at the key position of the high-tension switch cabinet, and the rpyroelectric infrared passes Sensor is connect with the single-chip microcomputer signal；

The single-chip microcontroller includes radio receiving transmitting module, MCU and warning circuit, the pyroelectric infrared sensor and the nothing The connection of line transceiver module signal, the radio receiving transmitting module, the MCU and the warning circuit are sequentially connected electrically.

Optionally, the radio receiving transmitting module includes transmitting unit and receiving unit, the pyroelectric infrared sensor with The transmitting unit connects one to one；

The receiving end of the receiving unit is connect with multiple transmitting units, the output end of the receiving unit with it is described MCU connection.

Optionally, the signal effective propagation path between the pyroelectric infrared sensor and the transmitting unit is 700m.

Optionally, the MCU includes:

Data acquisition unit, for receiving the temperature data of the pyroelectric infrared sensor acquisition, and to the temperature Data are shown and are alarmed；

Data main control unit, for saving the temperature data and warning message.

It optionally, further include reset circuit, the reset circuit is electrically connected with the MCU.

A kind of temperature of high-tension switch cabinet monitoring method based on pyroelectric sensor provided by the embodiments of the present application includes: In Pyroelectric infrared sensor is set at the key position of high-tension switch cabinet, high-tension switch cabinet is measured by pyroelectric infrared sensor Temperature data is compared with setting early warning value, judges whether temperature data is abnormal, if warm by the temperature data at key position Data exception is spent, then wakes up warning circuit and alarms, later storage temperature data and warning message, by comparing analysis high pressure Switchgear historical data can realize the assessment of switchgear operating status.Monitoring method provided by the present application is passed by rpyroelectric infrared Sensor monitors the temperature of switchgear key position on-line, and use is contactless, distributed detection means, realizes outside switchgear To the temperature monitoring of high-tension switch cabinet key position, while according to the alarm of temperature rise degree sending different stage, work people is reminded Member's switchgear fever is abnormal, can be avoided switchgear due to initiation accident of generating heat.

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The application can be limited.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.

Fig. 1 is a kind of temperature of high-tension switch cabinet monitoring method based on pyroelectric sensor provided by the embodiments of the present application Flow chart；

Fig. 2 is that heat is released in the temperature of high-tension switch cabinet monitoring system provided by the embodiments of the present application based on pyroelectric sensor The schematic diagram of electric infrared sensor；

Fig. 3 is that a kind of temperature of high-tension switch cabinet based on pyroelectric sensor provided by the embodiments of the present application monitors system Block diagram；

Fig. 4 is that heat is released in the temperature of high-tension switch cabinet monitoring system provided by the embodiments of the present application based on pyroelectric sensor The connection figure of electric infrared sensor and transmitting unit；

Fig. 5 is to receive in the temperature of high-tension switch cabinet monitoring system provided by the embodiments of the present application based on pyroelectric sensor The connection figure of unit and MCU.

Specific embodiment

In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, the common skill in this field The application protection all should belong in art personnel every other embodiment obtained without making creative work Range.

Referring to Fig. 1, for a kind of temperature of high-tension switch cabinet monitoring based on pyroelectric sensor provided by the embodiments of the present application The flow chart of method.

As shown in Figure 1, the temperature of high-tension switch cabinet monitoring method provided by the embodiments of the present application based on pyroelectric sensor Include:

S100: pyroelectric infrared sensor is set at the key position of high-tension switch cabinet.

S200: the temperature data of high-tension switch cabinet key position is measured by pyroelectric infrared sensor.

The positions such as contact and bus bar junction in high-tension switch cabinet because of aging or can connect in long-term operational process Excessive two fever of electric shock resistance, since the temperature monitoring of these heating positions is difficult, can not real-time monitoring, therefore, can in contact and The key positions such as bus bar junction install pyroelectric infrared sensor, by pyroelectric infrared sensor to these heating positions Temperature carry out real-time monitoring.

Pyroelectric infrared sensor is a kind of passive type modulation type temperature sensing device, can be used to directly receive target object hair The infrared ray penetrated simultaneously is converted into voltage signal output, and does not need infrared emission sensor, has reaction speed fast, sensitive Degree is high, accuracy is high, feature easy to use.Pyroelectric infrared sensor is since its device power consumption is small, cheap, accuracy rate The features such as high, is widely used in the fields such as security system, intelligentized Furniture, enterprise security.

In this example, pyroelectric infrared sensor receives the infrared radiation signal at high-tension switch cabinet key position, then Received infrared radiation signal is converted into voltage signal, is then obtained at high-tension switch cabinet key position according to voltage signal Temperature data.

As shown in Fig. 2, pyroelectric infrared sensor is made of optical filter, pyroelectricity detection member and preamplifier, filter Piece is bandpass filter, it is encapsulated in the top of sensor housing, makes the infra-red radiation of specific wavelength optionally through arrival Pyroelectricity detection member, the infra-red radiation outside its cutoff range cannot pass through；It is pyroelectric infrared sensor that pyroelectricity, which detects member, Core element, it be after the two sides of pyroelectric crystal plates metal electrode, power-up polarization be made, be equivalent to one and released with heat Transistor is the plate condenser of electrolyte, and when its Infrared irradiation by non-constant intensity, the temperature change of generation is led The charge density of its surface electrode is caused to change, to generate pyroelectricity electric current；Preamplifier by a high internal resistance field Effect pipe source follower is constituted, and is converted by impedance, and the faint current signal of pyroelectricity detection member is converted to useful electricity Press signal output.

S300: temperature data is compared with setting early warning value, judges whether temperature data is abnormal.

After obtaining the temperature data at high-tension switch cabinet key position by pyroelectric infrared sensor measurement, by its temperature Data are transmitted in single-chip microcontroller, and single-chip microcontroller analyzes it processing, judge whether temperature data is abnormal.Single-chip microcontroller judges temperature There are mainly two types of data exceptions: it is a kind of by detection position temperature be more than set early warning value, that is, judge measurement temperature number According to whether being more than setting early warning value, if temperature data is more than setting early warning value, temperature data exception is determined；Another kind is is examined The temperature rise of the temperature that location is set within a limited period of time is more than setting early warning value, i.e. temperature at calculating high-tension switch cabinet key position Temperature rise within a limited period of time judges whether temperature rise is more than setting early warning value, if temperature rise is more than setting early warning value, determines temperature Data exception.

S400: it if temperature data is abnormal, wakes up warning circuit and alarms.

Determine that certain point temperature data of pyroelectric infrared sensor measurement is abnormal after single-chip microcontroller analysis, then single-chip microcontroller wakes up report Alert circuit is alarmed, and is reminded the temperature in staff's high-tension switch cabinet somewhere excessively high, is handled.It misses in order to prevent Sentence, the high alarm setting of different monitoring range settings is also different, if the temperature data monitored is no more than the upper limit, then it is assumed that report Safety in alert range, return continues to monitor its temperature, while warning circuit is in a dormant state；Once monitoring that temperature data is super High alarm setting is crossed, then wakes up warning circuit alarm immediately, and display alarm information is until release alarm.

S500: storage temperature data and warning message.

After waking up warning circuit alarm, judges whether warning circuit needs to reset, if warning circuit needs to reset, return to continuation Monitor the temperature data at high-tension switch cabinet key position；If warning circuit is not required to reset, warning message is saved, and it is pre- to be delayed It is returned after fixing time and continues to monitor the temperature data at high-tension switch cabinet key position.After storage temperature data and warning message, By comparing analysis switchgear historical temperature, it can be achieved that the assessment of switchgear operating status.

Temperature of high-tension switch cabinet monitoring method provided by the embodiments of the present application based on pyroelectric sensor is using non-contact Formula, distributed detection means are opened by being mounted in switchgear the pyroelectric infrared sensor real-time monitoring at key position The temperature at cabinet key position is closed, is realized outside switchgear to the temperature monitoring of high-tension switch cabinet key position, while according to temperature Lift degree issues the alarm of different stage, reminds the fever of staff's switchgear abnormal, avoids switchgear since fever causes Accident.

The temperature of high-tension switch cabinet monitoring method based on pyroelectric sensor based on the above embodiment, the application are real It applies example and additionally provides a kind of temperature of high-tension switch cabinet monitoring system based on pyroelectric sensor.

As shown in figure 3, the temperature of high-tension switch cabinet provided by the embodiments of the present application based on pyroelectric sensor monitors system Including pyroelectric infrared sensor and single-chip microcontroller, wherein

Pyroelectric infrared sensor is arranged at the key position of high-tension switch cabinet, for acquiring high-tension switch cabinet key position The infrared radiation signal at the place of setting is to obtain the temperature data at key position.Pyroelectric infrared sensor and single-chip microcomputer signal connect It connects, i.e., after pyroelectric infrared sensor measurement obtains the temperature data at high-tension switch cabinet key position, temperature data is transmitted To single-chip microcontroller, processing is analyzed it by single-chip microcontroller.

Single-chip microcontroller includes radio receiving transmitting module, MCU and warning circuit, and radio receiving transmitting module includes transmitting unit and receives single Member, pyroelectric infrared sensor connect one to one with transmitting unit, as shown in figure 4, BIS0001 is sensed with rpyroelectric infrared The matched dedicated processes chip of device, APC300 are unidirectional emission units, and BIS0001 is connect, it can be achieved that pyroelectricity with APC300 The wireless transmission of infrared sensor temperature data collected.In this example, the letter of pyroelectric infrared sensor and transmitting unit Number effective propagation path reach 700m, it can be achieved that the overheating of switchgear key position long-range monitoring.

The receiving end of receiving unit is connect with multiple transmitting units, i.e., receiving unit can receive multiple rpyroelectric infrareds simultaneously The temperature data of sensor, to realize multiple spot monitoring.

As shown in figure 5, the output end of receiving unit is connect with MCU, APC250S is receiving unit matched with APC300, The signal of multiple APC300 transmittings can be received simultaneously to realize multiple spot monitoring, APC250S is connect with MCU, thus by pyroelectricity The temperature data of infrared sensor acquisition is transmitted to MCU.

In this example, MCU includes data acquisition unit and data main control unit, wherein

Data acquisition unit, for receiving the temperature data of pyroelectric infrared sensor acquisition, refrigerator-freezer temperature data is carried out Display and alarm.Specifically, data acquisition unit receives the temperature data of receiving unit transmission, by temperature data and setting early warning Value is compared, and judges whether temperature data is abnormal, if temperature data is abnormal, MCU wakes up warning circuit and alarms.

Data main control unit is used for storage temperature data and warning message.Data main control unit can assist realizing switchgear The historgraphic data recording of temperature at key position can realize switchgear operating status by comparing switchgear historical temperature is analyzed Assessment.

Temperature of high-tension switch cabinet monitoring system provided by the embodiments of the present application based on pyroelectric sensor further includes resetting Circuit, reset circuit are electrically connected with MCU, and for resetting to warning circuit, return continues at key position reset circuit Infra-red radiation be monitored.

Temperature of high-tension switch cabinet provided by the embodiments of the present application based on pyroelectric sensor monitors system, and user can lead to The state that liquid crystal display checks each monitoring point is crossed, and different setting early warning values is set by keyboard, which both can be only Vertical work can also be connected according to actual needs electric system standard agreement with comprehensive automation system of transformer substation, i.e., MCU passes through Communication port is connected with electric substation automation system.

Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right The content asked is pointed out.

Above-described the application embodiment does not constitute the restriction to the application protection scope.