阅读说明：本技术 周期供电电器的故障告警方法、检测告警装置及系统 (Fault alarm method, detection alarm device and system for periodic power supply electric appliance ) 是由 陈迎春 于 2020-12-17 设计创作，主要内容包括：本发明提供周期供电电器的故障告警方法、检测告警装置及系统,方法包括：步骤1：接收计时信号的计时长度t,并检测电器电路中是否通电,如果通电则进入步骤2,如果未通电则判断该计时长度t是否超过规律供电周期时段计时上限,如果未超过则持续接收计时信号并检测电器电路中是否通电,如果超过则进入步骤3；步骤2：将所述计时长度t置零,重新开始记录t,并监测通电是否被切断,未被切断则持续监测,如果切断,记录该段通电时间长度t-s＝t,比较该通电时间长度t-s与上一个周期的通电时间长度t-(s-1),若t-s<(t-(s-1)-k),其中k为预设的通电时间长度波动阈值范围,如果否,设置t-(s-1)＝t-s,并返回步骤1,如果是,进入步骤3；步骤3：产生并发送电器故障告警信号。(The invention provides a fault warning method, a detection warning device and a system of a periodic power supply electric appliance, wherein the method comprises the following steps: step 1: receiving the timing length t of the timing signal, detecting whether the electric appliance circuit is electrified, if so, entering the step 2, if not, judging whether the timing length t exceeds the timing upper limit of the regular power supply cycle time period, if not, continuously receiving the timing signal and detecting whether the electric appliance circuit is electrified, and if so, entering the step 3; step 2: setting the timing length t to zero, restarting to record t, monitoring whether the energization is cut off or not, if not, continuously monitoring, and if so, recording the energization time length t s Comparing the length t of the power-on time s The power-on time length t of the last period s‑1 If t is s <(t s‑1 -k), where k is a preset threshold range for the fluctuation of the length of the energization time, and if not, t is set s‑1 ＝t s And returning to the step 1, if yes, entering the step 3; and step 3: and generating and sending an appliance fault alarm signal.)

1. A fault warning method for a periodic power supply electric appliance is characterized by comprising the following steps:

step 1: receiving the timing length t of the timing signal, detecting whether the electric appliance circuit is electrified, if so, entering the step 2, if not, judging whether the timing length t exceeds the timing upper limit of the regular power supply cycle time period, if not, continuously receiving the timing signal and detecting whether the electric appliance circuit is electrified, and if so, entering the step 3;

step 2: setting the timing length t to zero, restarting to record t, monitoring whether the energization is cut off or not, if not, continuously monitoring, and if so, recording the energization time length t_sComparing the length t of the power-on time_sThe power-on time length t of the last period_s-1If t is_s<(t_s-1-k), where k is a preset threshold range for the fluctuation of the length of the energization time, and if not, t is set_s-1＝t_sAnd returning to the step 1, if yes, entering the step 3;

and step 3: and generating and sending an appliance fault alarm signal.

2. The fault warning method for the periodically powered electric appliance according to claim 1, wherein the upper timing limit of the regular power supply cycle period is that a power supply cycle is set to 24 hours, a certain time floating threshold value m is set, and when the timing length t > (24+ m) is not powered on, it is determined that a power transmission circuit of the electric appliance has a fault.

3. A fault detection and alarm device of a periodically powered electric appliance is characterized by comprising an electrified detection module connected with the detected electric appliance, wherein the electrified detection module is in communication connection with a single chip microcomputer, the single chip microcomputer is in bidirectional communication connection with a timer, the timer and the single chip microcomputer are powered by a battery, an execution program of the fault alarm method of the periodically powered electric appliance according to any one of claims 1-2 is arranged in the single chip microcomputer, and the timer is used for recording the time length t.

4. The fault detection alarm device of periodically powered electric appliances according to claim 3, wherein the timer is a crystal oscillator.

5. The fault detection and alarm device of the periodically powered electrical appliance according to claim 3 or 4, wherein the fault detection and alarm device is connected to a street lamp, the power-on detection module comprises a voltage detection unit and a current detection unit, the voltage detection unit is connected in parallel with a street lamp of the street lamp, the current detection unit is connected in series with the street lamp, the single chip microcomputer determines a fault from the power transmission circuit by the above fault alarm method of the periodically powered electrical appliance and whether power is supplied in the voltage detection unit, and when normal power-on is detected, the fault of the street lamp is detected by the voltage detection unit and the current detection unit.

6. The fault detection and alarm device of the periodically powered electric appliance according to claim 5, wherein the battery is a rechargeable battery, the rechargeable battery is connected with a street lamp cable of the street lamp, the street lamp cable supplies power to the rechargeable battery when being powered normally, the rechargeable battery supplies power to the timer and the single chip microcomputer through a voltage conversion module, and the single chip microcomputer controls the rechargeable battery to supply power to the street lamp after judging that the street lamp has a fault from the power transmission circuit and gives an alarm.

7. The fault detection warning device of a periodically powered electrical appliance according to claim 3, 4 or 6, characterized in that it further comprises a local alarm provided on the housing of the fault detection warning device.

8. The fault detection and alarm device for the periodically powered electric appliance according to claim 7, wherein the fault detection and alarm device comprises a circular arc-shaped rear end cover plate welded to the lamp post of the street lamp and a front shell cover connected to the rear end cover plate, the rear end cover plate is provided with a power line interface, the power line interface provides connection between the power-on detection module and the rechargeable battery and the street lamp cable, a circuit board is fixedly installed in the front shell cover, and the local alarm device is arranged on the front shell cover.

9. A fault detection and alarm system of a periodic power supply electric appliance is characterized by comprising a fault detection and alarm device as claimed in any one of claims 3 to 8 and a remote control center connected with the fault detection and alarm device, wherein the fault detection and alarm device sends an alarm signal and unique address code information at the same time, the remote control center determines the specific position of a street lamp with a fault according to the unique address code information, and the remote control center sends the position information and the fault type information of the street lamp with the fault to a maintainer.

10. The fault detection alarm system of a periodically powered electrical appliance according to claim 9, wherein said fault detection alarm device further comprises a wireless signal transmission module, and said fault detection alarm device transmits an alarm signal to said remote control center through said wireless signal transmission module.

Technical Field

The technology belongs to the technical field of electric appliance fault alarm, and mainly relates to a fault alarm method, a detection alarm device and a system for a periodic power supply electric appliance, in particular to fault alarm of a street lamp.

Background

With the rapid development of municipal construction, the paving range of the street lamps is continuously enlarged, the number of the street lamps is correspondingly increased, the management problem of the street lamps becomes more and more prominent, and particularly the problem of timely maintenance of street lamp faults becomes a difficult work problem.

The most common street lamp fault is that the street lamp is not bright, and the cause may be that the street lamp lamps and lanterns are damaged, and may also be that the street lamp transmission cable buried under the ground is damaged (for example, construction is cut off by mistake) or stolen (because of containing noble metal, the value is higher, the theft frequently).

The existing street lamp fault detection alarm comprises manual inspection and automatic detection, wherein the automatic detection usually judges whether the street lamp normally works through a current transformer or other devices, and the problem of two aspects mainly exists: 1) the automatic detection depends on the state that current passes through the street lamp cable, the detection alarm device works passively, and under the condition that the cable is stolen, no electricity is input into the street lamp at all, and active detection and alarm cannot be realized; 2) after the fault occurs, the street lamp enters an off state and cannot continuously provide illumination; 3) the failure can not be distinguished in advance from the damage of the lamp or the theft of the cable, and the maintenance personnel need to arrive at the site and then determine the failure, and the maintenance methods, tools and materials of the failure and the cable are different.

Disclosure of Invention

The invention aims to provide a fault warning method, a detection warning device and a system of a periodic power supply electric appliance, which realize low-cost and effective timely warning of street lamp faults.

The invention provides a fault warning method for a periodically powered electric appliance, which comprises the following steps:

step 1: receiving the timing length t of the timing signal, detecting whether the electric appliance circuit is electrified, if so, entering the step 2, if not, judging whether the timing length t exceeds the timing upper limit of the regular power supply cycle time period, if not, continuously receiving the timing signal and detecting whether the electric appliance circuit is electrified, and if so, entering the step 3;

step 2: setting the timing length t to zero, restarting to record t, monitoring whether the energization is cut off or not, if not, continuously monitoring, and if so, recording the energization time length t_sComparing the length t of the power-on time_sThe power-on time length t of the last period_s-1If t is_s<(t_s-1-k), where k is a preset threshold range for the fluctuation of the length of the energization time, and if not, t is set_s-1＝t_sAnd returning to step 1 if soEntering step 3;

and step 3: and generating and sending an appliance fault alarm signal.

Further, the upper limit of the regular power supply cycle time period timing is that 24 hours are taken as a power supply cycle, a certain time floating threshold value m is set, and when the timing length t > (24+ m) is not electrified, it is determined that a power transmission circuit of the electric appliance has a fault.

The invention also provides a fault detection and alarm device of the periodically powered electric appliance, which comprises an electrified detection module connected with the detected electric appliance, wherein the electrified detection module is in communication connection with a single chip microcomputer, the single chip microcomputer is in bidirectional communication connection with a timer, the timer and the single chip microcomputer are powered by batteries, the single chip microcomputer is internally provided with an execution program of the fault alarm method of the periodically powered electric appliance, and the timer is used for recording the time length t.

Further, the timer is a crystal oscillator.

Further, the fault detection and alarm device is connected with a street lamp, the power-on detection module comprises a voltage detection unit and a current detection unit, the voltage detection unit is connected with a street lamp of the street lamp in parallel, the current detection unit is connected with the street lamp in series, the single chip microcomputer judges whether the fault of the power transmission circuit is caused by the fault alarm method of the periodic power supply electric appliance and the power-on of the voltage detection unit, and when the normal power-on is detected, the fault of the street lamp is detected through the voltage detection unit and the current detection unit.

Furthermore, the battery is a rechargeable battery, the rechargeable battery is connected with a street lamp cable of the street lamp, the rechargeable battery supplies power to the rechargeable battery when the street lamp cable is normally powered on, the rechargeable battery supplies power to the timer and the singlechip through a voltage conversion module, and the singlechip controls the rechargeable battery to supply power to the street lamp after judging that the street lamp has a fault from a power transmission circuit and gives an alarm.

Further, the fault detection warning device further comprises a local alarm, and the local alarm is arranged on a shell of the fault detection warning device.

Furthermore, the fault detection alarm device comprises a circular arc-shaped rear end cover plate welded on the street lamp post and a front shell cover connected with the rear end cover plate, a power line interface is arranged on the rear end cover plate and provides connection between the power-on detection module and the rechargeable battery and the street lamp cable, a circuit board is fixedly installed in the front shell cover, and the local alarm is arranged on the front shell cover.

The invention also provides a fault detection and alarm system of the periodic power supply electric appliance, which comprises the fault detection and alarm device and a remote control center connected with the fault detection and alarm device, wherein the alarm signal sent by the fault detection and alarm device simultaneously sends unique address code information, the remote control center determines the specific position of the street lamp with the fault according to the unique address code information, and the remote control center sends the position information and the fault type information of the street lamp with the fault to maintenance personnel.

Furthermore, the fault detection warning device also comprises a wireless signal sending module, and the fault detection warning device sends a warning signal to the remote control center through the wireless signal sending module.

The invention provides a fault warning method, a fault detection warning device and a system of a periodic power supply electric appliance, which can calculate power transmission time and power failure time by recording time difference to estimate whether a cable in the circuit is stolen or not, can meet the anti-theft warning of the cable in the circuit which is continuously supplied with power for 24 hours (regularly supplied with power at a certain interval), and can ensure that the electric appliance end sends a warning signal to prompt a management control end if power is not received when the time reaches the period of a power supply period by timing at the electric appliance end, the electric appliance end sends the warning signal to the management control end actively to transfer the initiative of detection to the electric appliance end, the electric appliance end only needs to send the signal to the management control end when judging the fault, the management control end does not need to send a detection signal to the electric appliance end, only needs to be responsible for discharging maintenance personnel, and lightens the communication burden among the systems, thereby the invention also provides a corresponding simple and economical fault detection warning device and system, the recording length of the time length t only needs to be within the upper limit of the period of a regular power supply cycle, accumulated time errors do not exist in the recording, the recording can be realized only by utilizing a crystal oscillator circuit and simple calculation, the cost is low, the monitoring effect is good, the problems of cable theft, street lamp faults and the like can be timely notified to managers, the power supply is timely maintained and guaranteed, and the street lamp fault warning and the maintenance of the persons with the lowest cost are realized.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced, and it is apparent that the drawings in the following description are only some embodiments of the present invention.

FIG. 1 is a flow chart of a method for fault warning of a periodically powered appliance; h in the figure represents hour;

FIG. 2 is a schematic diagram of a fault warning device and a system of a periodically powered electrical appliance;

FIG. 3 is a schematic diagram of a schematic structure of an automatic detection device for street lamp failure;

fig. 4 is a schematic view of a mounting structure of a fault warning device for a street lamp.

In the figure:

the system comprises a fault detection alarm device 1, a power line interface 11, a rechargeable battery 12, a voltage conversion module 13, a crystal oscillator 14, a singlechip 15, a wireless signal sending module 16, a local alarm 17, an alarm lamp 171 and a buzzer 172;

an energization detection module 18, a voltage detection unit 181, a current detection unit 182;

a street lamp 2, a street lamp luminaire 21, a street lamp cable 22; a remote control center 3.

Detailed Description

The present invention will be further described with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art.

All the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, motion condition, etc. of each component in a certain posture (as shown in the drawings), and if the certain posture is changed, the directional indication is changed correspondingly; all technical features referred to by number are used for reference only and not for any numerical or significance sense; all terms "connected" or the like are to be interpreted broadly, e.g., as meaning a mechanical or electrical connection, a direct or indirect connection, a fixed or removable connection, etc., as determined by the actual intent of the solution; the technical characteristics of the multiple embodiments can be freely combined without conflict, as long as a corresponding technical scheme for solving the technical problems can be formed; the technical solutions described in the embodiments are for achieving the purpose of the present invention, and the portions not described in detail can be achieved by using the prior art.

As shown in the attached figure 1, the invention provides a fault warning method of a periodically powered electric appliance, which comprises the following steps:

step 1: receiving the timing length t of the timing signal, detecting whether the electric appliance circuit is electrified, if so, entering the step 2, if not, judging whether the timing length t exceeds the timing upper limit of the regular power supply cycle time period, if not, continuously receiving the timing signal and detecting whether the electric appliance circuit is electrified, and if so, entering the step 3;

step 2: setting the timing length t to zero, restarting to record t, monitoring whether the energization is cut off or not, if not, continuously monitoring, and if so, recording the energization time length t_sComparing the length t of the power-on time_sThe power-on time length t of the last period_s-1If t is_s<(t_s-1-k), where k is a preset energization time length fluctuation threshold range (equal to the timing error plus energization time length variable range), and if not, t is set_s-1＝t_sAnd returning to the step 1, if yes, entering the step 3;

and step 3: and generating and sending an appliance fault alarm signal.

Further, the upper limit of the regular power supply cycle time period timing is that 24 hours are taken as a power supply cycle, a certain time floating threshold value m (equal to a timing error plus a power supply time variable range) is set, and when the timing length t > (24+ m) is not electrified, it is determined that a power transmission circuit of the electric appliance has a fault.

Further, the appliance is a street light.

According to the fault warning method for the periodically powered electric appliance, the electric appliance end is used for timing, when the time reaches the power supply period, if power supply is not received, the electric appliance end actively sends out a warning signal to prompt the management control end, so that a circuit is reminded of faults; taking a street lamp as an example, the street lamp is lighted every night, for example, if a normal power supply signal is received at the street lamp end every night in winter of a city, the timing t is set to zero every time, and in the second day, if t reaches 24 hours and is not supplied, a fault possibly occurs, considering the power supply delay possibly brought by seasonal variation, for example, summer is changed to 19:00 power supply every night, and certain errors exist in timing precision, a method for judging entering a regular power supply period sets a lower limit (24-n) and an upper limit (24+ m), the lower limit is relatively unimportant, the timing length t is set as long as zero clearing is performed, the step is an important point, even if the difference between the previous power supply and the next power supply is less than 24 hours due to the fact that the timing t is set to zero every time when the fault is maintained, the fault detection alarm after the fault is still not influenced, if the power is not supplied for more than the upper limit time, the fault that the cable is stolen can occur; or the power supply is interrupted accidentally in the power supply process, at the moment, the power supply duration is compared with the power supply duration of the previous day, the change caused by seasonal variation is also considered, for example, the time from turning on the lamp in winter to 6:00 in the early morning and the time from turning on the lamp in summer to 5:00 in the early morning, a power-on time length fluctuation threshold value range k is set, the time from turning on the lamp and turning off the lamp can be set, the specific setting value of k can be a numerical value or a calculation formula, the design idea of the invention is not broken away, the power supply duration of the previous two days and the next two days is not much, the situation is that the lamp is normally turned off, the difference is more, and the obvious power supply time is short, the situation that the power supply is interrupted due to faults is explained, and a fault; the fault warning method can detect the fault which is not supplied with power timely from the electric appliance end only by arranging a simple timing circuit, thereby sending a warning signal to the management control end, transferring the initiative of detection to the electric appliance end, sending a signal to the management control end only when the fault is judged to occur by the electric appliance end, sending a detection signal to the electric appliance end by the management control end, only discharging maintenance personnel, and lightening the burden of mutual communication of the systems, thereby providing a corresponding fault detection warning device and a corresponding simple and economical system.

As shown in fig. 2-4, the invention further provides a fault detection and alarm device 1 for a periodically powered electrical appliance, which includes an energization detection module 18 connected to the electrical appliance to be detected, the energization detection module 18 is in communication connection with a single chip microcomputer 15, the single chip microcomputer 15 is in bidirectional communication connection with a timer (a crystal oscillator 14), the timer (the crystal oscillator 14) and the single chip microcomputer 15 are powered by a battery (a rechargeable battery 12), the single chip microcomputer 15 is internally provided with an execution program of the fault alarm method for the periodically powered electrical appliance, and the timer (the crystal oscillator 14) is used for recording a time length t. Because the recording length of the time length t only needs to be within the upper and lower limits of a regular power supply cycle time period (for example, more than 24 hours and less than 36 hours), and no accumulated time error exists in the recording (for example, if a timer needs to record time by Beijing time, the time correction need exists, the time length is only concerned, the specific time is not concerned, and the accumulated time error does not exist), the timing can be realized by using a simple crystal oscillator 14, and a complex timing and time correction circuit does not need to be designed.

Further, the fault detection and alarm device 1 is connected to a street lamp 2, the energization detection module 18 includes a voltage detection unit 181 and a current detection unit 182, the voltage detection unit 181 is connected in parallel to a street lamp 21 of the street lamp 2, the current detection unit 182 is connected in series to the street lamp 1, the single chip microcomputer 15 determines a fault from the power transmission circuit by the above fault alarm method of the periodic power supply apparatus and whether the voltage detection unit 181 is energized, and when normal energization is detected, the fault of the street lamp 2 is detected by the voltage detection unit 181 and the current detection unit 182. For example, if the voltage is normal and the current is zero, it indicates that the street lamp is not on; if the current is unstable, the street lamp flickers; faults such as voltage overvoltage, undervoltage and the like are also included; the detection of various types of faults of street lamps belongs to the prior art and can be used in combination with the invention.

Further, the battery is a rechargeable battery 12, the rechargeable battery 12 is connected with a street lamp cable 22 of the street lamp 2, the street lamp cable 22 supplies power to the rechargeable battery 12 when being powered normally, the rechargeable battery 12 supplies power to the timer (crystal oscillator 14) and the single chip microcomputer 15 through a voltage conversion module 13, and the single chip microcomputer 15 controls the rechargeable battery 12 to supply power to the street lamp 21 after judging that the street lamp has a fault from a power transmission circuit and gives an alarm. Under the stolen circumstances that is not in time discover and repair of cable, the traffic accident takes place for the highway section easily, and this technical scheme provides the continuous street lamp power supply scheme under the stolen circumstances of cable, can not provide the problem of illumination before avoiding damaging the maintenance.

Further, the fault detection alarm device 1 further comprises a local alarm 17. Further, the local alarm 17 includes an alarm lamp 171 and a buzzer 172. Further, the local alarm 17 is provided on the housing of the failure detection warning apparatus 1. Through the setting of the local alarm 17, the maintenance personnel can locate the street lamp 2 with faults according to the alarm signal of the local alarm 17 when in inspection, and the rechargeable battery 12 can be combined to provide a fault alarm troubleshooting maintenance scheme without power failure.

Further, the fault detection and alarm device 1 comprises a circular arc-shaped rear end cover plate welded on the street lamp post and a front shell cover connected with the rear end cover plate, a power line interface 11 is arranged on the rear end cover plate, the power line interface 11 provides connection between the power-on detection module 18 and the rechargeable battery 12 and the street lamp cable 11, a circuit board is fixedly installed in the front shell cover, and the local alarm 17 is arranged on the front shell cover.

The invention also provides a fault detection and alarm system of the periodic power supply electric appliance, which comprises the fault detection and alarm device 1 and a remote control center 3 connected with the fault detection and alarm device 1, wherein the alarm signal sent by the fault detection and alarm device 1 simultaneously sends unique address code information, the remote control center 3 determines the specific position of the street lamp 2 with the fault according to the unique address code information, and the remote control center 3 sends the position information and the fault type information of the street lamp 2 with the fault to maintenance personnel. The maintenance scheme and the inspection and repair position can be determined according to the fault type information by the maintainer during maintenance, if the lamp is damaged, the lamp is directly replaced, if the power transmission circuit has a fault, the inspection is further performed, and the inspection workload can be reduced according to the position of the fault street lamp.

Further, the fault detection and alarm device 1 further includes a wireless signal sending module 16, and the fault detection and alarm device 1 sends an alarm signal to the remote control center 3 through the wireless signal sending module 16. Further, the wireless signal transmitting module 16 may adopt various forms such as GPRS, NB-IOT, ZigBee, WIFI, and the like.

The above examples are intended to illustrate specific embodiments of the present invention, but not to limit the present invention, and several modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should be construed as the protection scope of the present invention.