CN112994439A

CN112994439A - Drive integrated controller with offline operation function and offline operation method

Info

Publication number: CN112994439A
Application number: CN202011552125.7A
Authority: CN
Inventors: 刘灵斌; 陈光炎; 龚冰冰; 吴清波
Original assignee: Fujian Joy Solar Technology Corp
Current assignee: Fujian Joy Solar Technology Corp
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-06-18
Anticipated expiration: 2040-12-24
Also published as: CN112994439B

Abstract

The invention provides a driving integrated controller with an offline operation function and an offline operation method, wherein the controller comprises an AC-DC power supply circuit, an electric quantity monitoring circuit, a data processing circuit, a communication circuit and a positioning circuit; the electric quantity monitoring circuit is connected with the data processing circuit; the data processing circuit is connected with the communication circuit; the positioning circuit is connected with the communication circuit; the communication circuit is connected with load equipment; the electric quantity monitoring circuit, the data processing circuit, the communication circuit, the positioning circuit and the load equipment are all powered by the AC-DC power supply circuit. The invention has the advantages that: the off-line control can be well carried out by utilizing the learned running state and the acquired current time, so that the out-of-control phenomenon caused by low signal intensity or insufficient coverage of a base station can be effectively prevented, and the cost can be effectively reduced compared with the conventional built-in RTC clock circuit.

Description

Drive integrated controller with offline operation function and offline operation method

Technical Field

The invention relates to the field of communication, in particular to a driving integrated controller with an offline operation function and an offline operation method.

Background

The street lamp is a lamp for providing a road with an illumination function, and generally refers to a lamp in a road illumination range in traffic illumination; at present, street lamps are widely used in various places requiring illumination. The NBiot controller is an important device for realizing street lamp control.

The existing NBiot controllers transmit communication information based on a base station, and when a street lamp is located at a position with low signal intensity or insufficient coverage of the base station, the phenomenon that the NBiot controllers lose control exists, so that the street lamp cannot be effectively controlled. Certainly, an RTC clock circuit is built in part of the NBiot controller, and the problem of insufficient signal coverage can be solved to a certain extent by utilizing the timing function of the RTC clock circuit; however, the built-in RTC clock circuit increases the hardware design cost, and when the RTC battery runs out, the NBiot controller is still out of control. In view of the above problems, the present inventors have conducted extensive studies and have made the present invention.

Disclosure of Invention

The invention aims to provide a driving integrated controller with an offline operation function and an offline operation method, and solves the problem that the existing controller cannot effectively control a street lamp due to the out-of-control phenomenon.

The invention is realized by the following steps:

in a first aspect, a driving integrated controller with an offline operation function comprises an AC-DC power supply circuit, an electric quantity monitoring circuit, a data processing circuit, a communication circuit and a positioning circuit; the electric quantity monitoring circuit is connected with the data processing circuit; the data processing circuit is connected with the communication circuit; the positioning circuit is connected with the communication circuit; the communication circuit is connected with load equipment; the electric quantity monitoring circuit, the data processing circuit, the communication circuit, the positioning circuit and the load equipment are all powered by the AC-DC power supply circuit.

Further, the AC-DC power supply circuit comprises an alternating current power supply, an EMC filter circuit, a rectifier circuit, a pi-type filter circuit, a transformer circuit, a first secondary isolation output circuit, a second secondary isolation output circuit and an auxiliary winding circuit;

the alternating current power supply is connected with the EMC filter circuit; the EMC filter circuit is connected with the rectifying circuit; the rectification circuit is connected with the pi-shaped filter circuit; the pi-shaped filter circuit is connected with the transformer circuit;

the first secondary isolation output circuit, the second secondary isolation output circuit and the auxiliary winding circuit are all connected with the transformer circuit; the electric quantity monitoring circuit supplies power through the second secondary isolation output circuit; the data processing circuit, the communication circuit and the positioning circuit are powered by the first secondary isolation output circuit; the load equipment is powered by the alternating current power supply.

Further, the EMC filter circuit includes a common mode inductor LF1, a capacitor CX1, a resistor R3, and a resistor R6; the capacitor CX1 is arranged at the output end of the common-mode inductor LF 1; the resistor R3 and the resistor R6 are connected in series and then connected to two ends of the capacitor CX 1.

Further, the lightning protection device MOV1 is arranged at the input end of the common-mode inductor LF 1.

Further, the fuse FU1 is arranged on the live wire of the alternating current power supply.

Further, the pi-type filter circuit comprises a capacitor EC1, an inductor L1 and a capacitor EC 2; the capacitor EC1 and the capacitor EC2 are arranged at the output end of the rectifying circuit in parallel; the inductor L1 is connected between the capacitor EC1 and the capacitor EC 2.

Further, the transformer circuit comprises a starting circuit, a first spike absorption circuit, a transformer TR1 and a power management chip U5;

one end of the starting circuit and one end of a primary coil of the transformer TR1 are both connected with the output end of the pi-type filter circuit; the other end of the starting circuit and the other end of the primary coil of the transformer TR1 are both connected with the power management chip U5; the first spike absorbing circuit is connected to two ends of a primary coil of the transformer TR 1; the power management chip U5 is connected with a current sampling circuit.

Further, the starting circuit comprises a resistor R7, a resistor R10 and a resistor R15 which are sequentially connected in series.

Further, the first spike absorption circuit comprises a resistor R8, a resistor R11, a rectifying diode D2 and a capacitor C5; the resistor R8, the resistor R11 and the rectifier diode D2 are sequentially connected in series; the capacitor C5 is connected in parallel at two ends of the resistor R8 and the resistor R11 which are connected in series.

Further, the current sampling circuit comprises a resistor R27, a resistor R28 and a resistor R29 which are arranged in parallel; and one end of the resistor R27, the resistor R28 and the resistor R29 is connected with the power management chip U5, and the other end is grounded.

Further, the auxiliary winding circuit comprises a maximum output voltage control circuit and a first RC filter circuit; the auxiliary winding of the transformer TR1 is connected with the power management chip U5 through the first RC filter circuit; the auxiliary winding of the transformer TR1 is connected with the power management chip U5 through the maximum output voltage control circuit.

Furthermore, the auxiliary winding circuit also comprises an over-temperature protection circuit; the over-temperature protection circuit is connected with the power management chip U5.

Further, the first secondary isolation output circuit comprises a second spike absorption circuit, a rectifier diode D1, a voltage stabilizing chip U1 and a dummy load R9; one end of the rectifier diode D1 is connected with a secondary coil of the transformer TR1, and the other end of the rectifier diode D1 is connected with the input end of the voltage stabilizing chip U1; the second spike absorption circuit is arranged at two ends of the rectifier diode D1 in parallel; the dummy load R9 is provided in parallel between both ends of one secondary coil of the transformer TR 1.

Further, a capacitor EC3 and a capacitor C2 are disposed between two ends of a secondary winding of the transformer TR 1.

Further, the output end of the voltage stabilizing chip U1 is further provided with a capacitor C3 and a capacitor C4.

Further, the second secondary isolation output circuit comprises a third spike absorption circuit, a rectifier diode D3, a voltage stabilizing chip U2 and a dummy load R20; one end of the rectifying diode D3 is connected with the other secondary coil of the transformer TR1, and the other end of the rectifying diode D3 is connected with the input end of the voltage stabilizing chip U2; the third spike absorption circuit is arranged at two ends of the rectifying diode D3 in parallel; the dummy load R20 is disposed in parallel between both ends of the other secondary coil of the transformer TR 1.

Further, a capacitor EC4 and a capacitor C8 are disposed between two ends of the other secondary winding of the transformer TR 1.

Further, the output end of the voltage stabilizing chip U2 is further provided with a capacitor C9 and a capacitor C10.

Further, the electric quantity monitoring circuit comprises a sampling chip U4, a sampling resistor RS1 and a relay circuit; one end of the sampling resistor RS1 is connected with a live wire of the alternating current power supply, and the other end of the sampling resistor RS1 is connected with the relay circuit; two ends of the sampling resistor RS1 are connected with the sampling chip U4.

Further, the electric quantity monitoring circuit further comprises a sampling resistor R2 and a sampling resistor R5; the sampling resistor R2 and the sampling resistor R5 are connected in series and are arranged between a live wire and a zero wire of the alternating current power supply; two ends of the sampling resistor R2 are connected with the sampling chip U4.

Further, the sampling chip U4 is connected to two ends of the sampling resistor RS1 through a second RC filter circuit.

Further, the sampling chip U4 is connected to two ends of the sampling resistor R2 through a third RC filter circuit.

Further, the relay circuit comprises a relay K1, a driving circuit and a driving isolator U3A; the sampling resistor RS1 is connected with the relay K1; the drive circuit is connected with the relay K1; the drive isolator U3A is connected to the drive circuit.

Further, the driving circuit comprises a resistor R13, a resistor R19, a resistor R22, a resistor R23 and a transistor Q1; one end of the resistor R13 is connected with one end of the coil of the relay K1, and the other end of the resistor R13 is connected with the drive isolator U3A; the driving isolator U3A is connected with the base of a transistor Q1 through the resistor R19; the driving isolator U3A is connected with the emitter of a transistor Q1 through the resistor R23; the resistor R22 is arranged between the base and the emitter of the transistor Q1; the emitter of the transistor Q1 is grounded; the collector of the transistor Q1 is connected to the other end of the coil of the relay K1.

Further, the sampling chip U4 is connected to the second secondary isolation output circuit through a fourth RC filter circuit.

Further, the data processing circuit comprises a signal processing chip U6, a signal isolation chip U9, a drive isolator U3B, an analog signal output circuit and a digital signal output circuit; the output end of the electric quantity monitoring circuit is connected with the signal processing chip U6 through the signal isolation chip U9; the drive isolator U3B, the analog signal output circuit and the digital signal output circuit are all connected with the signal processing chip U6.

Further, the analog signal output circuit includes a transistor Q3, an amplifier U5A, and a first voltage follower circuit; the base of the transistor Q3 is connected with the signal processing chip U6, the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 is connected with the positive input end of the amplifier U5A; the negative input of the amplifier U5A is connected to the output of the amplifier U5A through the first voltage follower circuit.

Further, the digital signal output circuit comprises a transistor Q5, an amplifier U5B, a smoothing filter circuit and a second voltage follower circuit; the base of the transistor Q5 is connected with the signal processing chip U6, the emitter of the transistor Q5 is grounded, and the collector of the transistor Q5 is connected with the positive input end of the amplifier U5B; the smoothing filter circuit is arranged between an emitter and a collector of the transistor Q5; the negative input terminal of the amplifier U5B is connected to the output terminal of the amplifier U5B through the second voltage follower circuit.

Further, the data processing circuit further comprises a first capacitance filtering circuit; the first capacitance filter circuit is connected with the signal processing chip U6.

Further, the data processing circuit further comprises a first reset circuit; the first reset circuit is connected with the signal processing chip U6.

Further, the data processing circuit further comprises a crystal oscillator circuit; the crystal oscillator circuit is connected with the signal processing chip U6.

Further, the communication circuit comprises an NBiot processing chip U7 and an NBiot impedance matching circuit connected to the NBiot processing chip U7.

Further, the communication circuit further comprises a level conversion circuit; the level conversion circuit is connected with the NBiot processing chip U7.

Further, the output end of the level conversion circuit is connected with the NBiot impedance matching circuit through a capacitor C23.

Further, the communication circuit further comprises a SIM card circuit; the SIM card circuit is connected with the NBiot processing chip U7.

Further, the communication circuit further comprises a starting circuit; the boot circuit is connected with the NBiot processing chip U7.

Further, the communication circuit further comprises a second reset circuit; the second reset circuit is connected with the NBiot processing chip U7.

Further, the communication circuit further comprises a second capacitive filter circuit; the second capacitance filter circuit is connected with the NBiot processing chip U7.

Further, the communication circuit further comprises a signal indicator light circuit; the signal indicating lamp circuit is connected with the NBiot processing chip U7.

Further, the positioning circuit is a GPS positioning circuit.

In a second aspect, a method for off-line operation of a controller, the method using the controller described above, the method comprising the steps of:

step S1, the controller is powered on to carry out system initialization;

step S2, network access registration is carried out on the load equipment accessed to the controller; after the registration is successful, automatically acquiring position information in real time through the positioning circuit, wherein the position information at least comprises longitude and latitude and current time;

step S3, receiving a control instruction carrying running time issued by the web end platform; controlling the load equipment to operate in the running time based on the control instruction, and simultaneously recording the running time in the control instruction as an initial condition of offline self-learning and offline operation; the run time comprises a start time and an end time;

step S4, before the next operation of the load equipment, the recorded starting time is obtained and the current time in the position information is compared, when the current time exceeds the recorded starting time and reaches the set overtime, if the control instruction issued by the web end platform is not received, the load equipment is judged to be in an off-line state, and at the moment, the load equipment is controlled to operate according to the last recorded initial condition; if a control instruction sent by the web end platform is received, it is determined that the load device is in an online state, and the process proceeds to step S3.

Further, after the step S2, the method further includes:

and step S21, reporting the online information of the load equipment to the web end platform.

Further, the step S21 further includes: and acquiring the electric quantity parameter information of the load equipment through the electric quantity monitoring circuit, and uploading the position information and the electric quantity parameter information to a web end platform for the web end platform to display data.

Further, the step S21 further includes: the web end platform carries out real-time monitoring and early warning based on the received position information and electric quantity parameter information, and automatically pushes the early warning information to maintenance personnel through a background after the early warning information is monitored.

Further, the step S21 further includes: and the web end platform carries out offline early warning when monitoring that the load equipment is offline.

Further, in the step S3, the control instruction further carries an adjustment parameter, and after receiving the control instruction, the system further controls the load device to adjust the operation parameter based on the adjustment parameter in the control instruction; and simultaneously recording the adjusting parameters in the control command into initial conditions.

Further, the step S4 further includes: in the process of off-line operation, when the load equipment is on-line, receiving a control instruction which is issued by a web end platform and carries operation time and an adjustment parameter, and updating the operation time and the operation parameter of the off-line operation based on the control instruction; and simultaneously recording the running time and the adjusting parameters in the control command as initial conditions of offline self-learning and offline running.

The invention has the following advantages: according to the invention, the data processing circuit, the communication circuit and the positioning circuit are mutually matched, the communication circuit is utilized to realize control instruction transmission between the web end platform and the controller, the self-learning function of the data processing circuit is utilized to learn the running state of the online controller, and the positioning circuit is utilized to acquire the longitude and latitude coordinates and the local current time in real time, so that the learning running state and the acquired current time can be well utilized to perform off-line control under the condition that the system is not powered off, and the control-away phenomenon caused by low signal intensity or insufficient coverage range of a base station can be effectively prevented, and compared with the existing built-in RTC clock circuit, the cost can be effectively reduced.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of a driving integrated controller with an offline operation function according to the present invention;

FIG. 2 is a circuit schematic block diagram of the AC-DC power supply circuit of the present invention;

FIG. 3 is a specific circuit configuration diagram of the AC-DC power supply circuit of the present invention;

FIG. 4 is a detailed circuit diagram of the first secondary isolated output circuit and the second secondary isolated output circuit of the present invention;

FIG. 5 is a specific circuit diagram of the power monitoring circuit according to the present invention;

FIG. 6 is a specific circuit configuration diagram of an analog signal output circuit according to the present invention;

FIG. 7 is a specific circuit configuration diagram of the digital signal output circuit according to the present invention;

FIG. 8 is a circuit diagram of a data processing circuit according to the present invention;

FIG. 9 is a specific circuit structure diagram of the signal isolation chip of the present invention;

FIG. 10 is a detailed circuit configuration diagram of the driving isolator according to the present invention;

FIG. 11 is a detailed circuit configuration diagram of a communication circuit according to the present invention;

fig. 12 is a functional block diagram of the communication between the web-end platform and the load device in the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 12, the integrated driving controller with offline operation function of the present invention includes an AC-DC power supply circuit 1, an electric quantity monitoring circuit 2, a data processing circuit 3, a communication circuit 4 and a positioning circuit 5; the electric quantity monitoring circuit 2 is connected with the data processing circuit 3; the data processing circuit 3 is connected with the communication circuit 4; the positioning circuit 5 is connected with the communication circuit 4; the communication circuit 4 is connected with a load device 6; the electric quantity monitoring circuit 2, the data processing circuit 3, the communication circuit 4, the positioning circuit 5 and the load equipment 6 are all powered by the AC-DC power supply circuit 1. In the present invention, the load device 6 is a street lamp. When the controller works, the AC-DC power supply circuit 1 supplies power to each module; the electric quantity monitoring circuit 2 is used for acquiring electric quantity parameters of the load equipment 6, and specifically comprises various electric quantity parameters such as current, voltage, power, frequency and the like; the data processing circuit 3 is used for analyzing various user data and controlling the on-off, brightness adjustment and other operations of the load equipment 6; the positioning circuit 5 is used for acquiring longitude and latitude coordinates and local current time in real time; the communication circuit 4 is used for realizing communication with a web end platform and realizing the remote control function of the street lamp. According to the invention, through the mutual cooperation of the data processing circuit 3, the communication circuit 4 and the positioning circuit 5, the communication circuit 4 is utilized to realize the transmission of control instructions between the web end platform and the controller, the self-learning function of the data processing circuit 3 is utilized to learn the running state of the online controller, and the positioning circuit 5 is utilized to acquire longitude and latitude coordinates and local current time in real time, so that under the condition that the system is not powered down, the learning running state and the acquired current time can be well utilized to perform offline control, and the phenomenon of out-of-control caused by low signal intensity or insufficient coverage of a base station can be effectively prevented, and compared with the existing built-in RTC clock circuit, the cost can be effectively reduced.

In the invention, the AC-DC power supply circuit 1 comprises an AC power supply 11, an EMC filter circuit 12, a rectifier circuit 13, a pi-type filter circuit 14, a transformer circuit 15, a first secondary isolation output circuit 16, a second secondary isolation output circuit 17 and an auxiliary winding circuit 18;

the alternating current power supply 11 is connected with the EMC filter circuit 12; the EMC filter circuit 12 is connected with the rectifying circuit 13; the rectification circuit 13 is connected with the pi-type filter circuit 14; the pi-type filter circuit 14 is connected with the transformer circuit 15; the alternating current power supply 11 is input by 90 Vac-264 Vac; the rectifier circuit 13 includes a rectifier DB 1;

the first secondary isolation output circuit 16, the second secondary isolation output circuit 17 and the auxiliary winding circuit 18 are all connected with the transformer circuit 15; the electric quantity monitoring circuit 2 supplies power through the second secondary isolation output circuit 17; the data processing circuit 3, the communication circuit 4 and the positioning circuit 5 are powered by the first secondary isolation output circuit 16; the load device 6 is supplied with power from the ac power supply 11. When the alternating current power supply works, 90 Vac-264 Vac voltage input by the alternating current power supply 11 is subjected to filtering processing through the EMC filter circuit 12 and then enters the rectifying circuit 13 for rectification, and the rectified voltage outputs 1.414 times of input voltage and enters the pi-type filter circuit 14 for filtering processing so as to convert pulsating alternating current into pulsating direct current; the direct current outputs a path of 3.3V direct current to be provided for the data processing circuit 3, the communication circuit 4 and the positioning circuit 5 after passing through the transformer circuit 15 and the first secondary isolation output circuit 16, and simultaneously outputs a path of 5V direct current to be provided for the electric quantity monitoring circuit 2 to use through the second secondary isolation output circuit 17; the auxiliary winding circuit 18 outputs a voltage to supply power to the transformer circuit 15 after rectification and filtering.

In the invention, the EMC filter circuit 12 comprises a common-mode inductor LF1, a capacitor CX1, a resistor R3 and a resistor R6; the capacitor CX1 is arranged at the output end of the common-mode inductor LF 1; the resistor R3 and the resistor R6 are connected in series and then connected to two ends of the capacitor CX 1. In specific operation, the common mode inductor LF1 can play a role in EMC filtering; the capacitor CX1 can discharge the resistor R3 and the resistor R6 to realize the release of the electric energy in the capacitor CX 1.

In the present invention, the AC-DC power supply circuit 1 further includes a lightning protection device MOV1 disposed at the input end of the common mode inductor LF1 to implement a lightning protection function.

In the present invention, the AC-DC power supply circuit 1 further includes a fuse FU1 disposed in the live line of the AC power supply 11 to protect the circuit from being blown out.

In the invention, the pi-type filter circuit 14 comprises a capacitor EC1, an inductor L1 and a capacitor EC 2; the capacitor EC1 and the capacitor EC2 are arranged at the output end of the rectifying circuit 13 in parallel; the inductor L1 is connected between the capacitor EC1 and the capacitor EC 2. During specific operation, the pi filter circuit 14 may perform filtering processing on the input voltage to convert the pulsating alternating current into the pulsating direct current.

In the present invention, the transformer circuit 15 includes a start circuit 151, a first spike absorption circuit 152, a transformer TR1 and a power management chip U5;

one end of the starting circuit 151 and one end of a primary coil of the transformer TR1 are both connected with the output end of the pi-type filter circuit 14; the other end of the starting circuit 151 and the other end of the primary coil of the transformer TR1 are both connected with the power management chip U5; the first spike absorption circuit 152 is connected across the primary coil of the transformer TR 1; the power management chip U5 is connected to a current sampling circuit 153. In operation, the starting circuit 151 is configured to start the transformer TR1 to operate in a first switching cycle; the first spike absorption circuit 152 is used for absorbing spike pulse interference, including switching noise interference of a direct current bus and a transformer TR 1; the transformer TR1 is used for realizing voltage transformation; the power management chip U5 is used for realizing power management; the current sampling circuit 153 is used for sampling the current.

In the invention, the starting circuit 151 comprises a resistor R7, a resistor R10 and a resistor R15 which are connected in series in sequence, and in the first switching period, the resistor R7, the resistor R10 and the resistor R15 jointly start the transformer TR1 to work.

In the present invention, the first spike absorption circuit 152 includes a resistor R8, a resistor R11, a rectifying diode D2, and a capacitor C5; the resistor R8, the resistor R11 and the rectifier diode D2 are sequentially connected in series; the capacitor C5 is connected in parallel at two ends of the resistor R8 and the resistor R11 which are connected in series.

In the present invention, the current sampling circuit 153 includes a resistor R27, a resistor R28, and a resistor R29 arranged in parallel; and one end of the resistor R27, the resistor R28 and the resistor R29 is connected with the power management chip U5, and the other end is grounded.

In the present invention, the auxiliary winding circuit 18 includes a maximum output voltage control circuit 181 and a first RC filter circuit 182; the auxiliary winding of the transformer TR1 is connected with the power management chip U5 through the first RC filter circuit 182; the auxiliary winding of the transformer TR1 is connected to the power management chip U5 through the maximum output voltage control circuit 181. When the circuit works, the maximum output voltage control circuit 181 is used for suppressing the maximum output voltage to ensure that the output voltage is not too large; the first RC filter circuit 182 is used to implement RC filtering. In the present embodiment, the maximum output voltage control circuit 181 includes a resistor R24, a resistor R26, and a capacitor C12; the first RC filter circuit 182 includes a resistor R17, a capacitor EC5, and a diode D4, wherein the diode D4 functions as a rectifier.

In the present invention, the auxiliary winding circuit 18 further includes an over-temperature protection circuit 183; the over-temperature protection circuit 183 is connected to the power management chip U5. In operation, the over-temperature protection circuit 183 is configured to perform an over-temperature protection function on the power management chip U5, in this embodiment, the over-temperature protection circuit 183 includes a thermistor RT1 and a resistor R31, and the thermistor RT1 may exhibit different resistance values at different temperatures, so as to perform a protection function.

In the present invention, the first secondary isolation output circuit 16 includes a second spike absorption circuit 161, a rectifier diode D1, a voltage regulation chip U1 and a dummy load R9; one end of the rectifier diode D1 is connected with a secondary coil of the transformer TR1, and the other end of the rectifier diode D1 is connected with the input end of the voltage stabilizing chip U1; the second spike absorbing circuit 161 is arranged at two ends of the rectifying diode D1 in parallel; the dummy load R9 is provided in parallel between both ends of one secondary coil of the transformer TR 1. In operation, the voltage output by one secondary coil of the transformer TR1 is rectified by the rectifier diode D1 to output 12V dc, and the 12V dc can supply power to the amplifying circuit in the data processing circuit 3; the 12V direct current is regulated by a voltage regulation chip U1 and then outputs a 3.3V direct current power supply. Wherein, the second spike absorption circuit 161 is used for absorbing spike interference; the dummy load R9 is used to balance the voltage. In the present embodiment, the second spike absorption circuit 161 includes a resistor R1, a resistor R4, and a capacitor C1.

In the invention, a capacitor EC3 and a capacitor C2 are further arranged between two ends of one secondary coil of the transformer TR1 to filter the rectified 12V direct-current voltage.

In the invention, the output end of the voltage stabilization chip U1 is further provided with a capacitor C3 and a capacitor C4 to filter the regulated and outputted 3.3V dc voltage.

In the present invention, the second secondary isolation output circuit 17 includes a third spike absorption circuit 171, a rectifier diode D3, a voltage regulator chip U2 and a dummy load R20; one end of the rectifying diode D3 is connected with the other secondary coil of the transformer TR1, and the other end of the rectifying diode D3 is connected with the input end of the voltage stabilizing chip U2; the third spike absorption circuit 171 is arranged in parallel at two ends of the rectifier diode D3; the dummy load R20 is disposed in parallel between both ends of the other secondary coil of the transformer TR 1. In operation, the voltage output by the other secondary winding of the transformer TR1 is rectified by the rectifying diode D3 to output 12V dc, and the 12V dc can supply power to the amplifying circuit in the data processing circuit 3; the 12V direct current is regulated by a voltage regulation chip U2 and then outputs a 5V direct current power supply. Wherein, the third spike absorption circuit 171 is used for absorbing spike interference; the dummy load R20 is used to balance the voltage. In the present embodiment, the third spike absorption circuit 171 is composed of a resistor R12, a resistor R14, and a capacitor C6.

In the invention, a capacitor EC4 and a capacitor C8 are further arranged between two ends of the other secondary coil of the transformer TR1 to filter the rectified 12V direct-current voltage.

In the invention, the output end of the voltage stabilization chip U2 is further provided with a capacitor C9 and a capacitor C10 to filter the regulated 5V dc voltage.

In the invention, the electric quantity monitoring circuit 2 comprises a sampling chip U4, a sampling resistor RS1 and a relay circuit 21; one end of the sampling resistor RS1 is connected with the live wire of the alternating current power supply 11, and the other end is connected with the relay circuit 21; two ends of the sampling resistor RS1 are connected with the sampling chip U4. When the relay circuit 21 works, the relay circuit is used for controlling the switching of the loop; the sampling chip U4 is used for sampling the current flowing through the sampling resistor RS 1.

In the present invention, the power monitoring circuit 2 further includes a sampling resistor R2 and a sampling resistor R5; the sampling resistor R2 is connected with the sampling resistor R5 in series and is arranged between the live wire and the zero wire of the alternating current power supply 11; two ends of the sampling resistor R2 are connected with the sampling chip U4. In specific operation, the sampling chip U4 samples the voltage and frequency of the sampling resistor R2/the sampling resistor R5.

In the present invention, the sampling chip U4 is connected to two ends of the sampling resistor RS1 through the second RC filter circuit 22, so as to filter the sampled current signal through the second RC filter circuit 22. In the present embodiment, the second RC filter circuit 22 includes a resistor R33, a resistor R34, a capacitor C15, a capacitor C16, and a capacitor C17.

In the present invention, the sampling chip U4 is connected to two ends of the sampling resistor R2 through a third RC filter circuit 23, so as to perform filtering processing on the sampled voltage and frequency through the third RC filter circuit 23. In the present embodiment, the third RC filter circuit 23 includes a resistor R25, a resistor R30, a resistor R32, a capacitor C11, a capacitor C13, and a capacitor C14.

In the present invention, the relay circuit 21 includes a relay K1, a drive circuit 211, and a drive isolator U3A; the sampling resistor RS1 is connected with the relay K1; the drive circuit 211 is connected with the relay K1; the driving isolator U3A is connected to the driving circuit 211. When the circuit works, the relay K1 is driven by the driving circuit 211 to carry out circuit switching; the drive isolator U3A is used for drive isolation.

In the present invention, the driving circuit 211 includes a resistor R13, a resistor R19, a resistor R22, a resistor R23, and a transistor Q1; one end of the resistor R13 is connected with one end of the coil of the relay K1, and the other end of the resistor R13 is connected with the drive isolator U3A; the driving isolator U3A is connected with the base of a transistor Q1 through the resistor R19; the driving isolator U3A is connected with the emitter of a transistor Q1 through the resistor R23; the resistor R22 is arranged between the base and the emitter of the transistor Q1; the emitter of the transistor Q1 is grounded; the collector of the transistor Q1 is connected to the other end of the coil of the relay K1. In specific operation, the switching control of the relay K1 is realized by controlling the on and off of the transistor Q1.

In the invention, the sampling chip U4 is connected to the second secondary isolation output circuit 17 through a fourth RC filter circuit 24, so as to filter the 5V dc provided by the second secondary isolation output circuit 17 and input the filtered dc to the sampling chip U4 for use. In this embodiment, the fourth RC filter circuit 24 includes a resistor R16, a resistor R18, a resistor R21, and a capacitor C7.

In the present invention, the data processing circuit 3 includes a signal processing chip U6, a signal isolation chip U9, a drive isolator U3B, an analog signal output circuit 31, and a digital signal output circuit 32; the output end of the electric quantity monitoring circuit 2 is connected with the signal processing chip U6 through the signal isolation chip U9; the driving isolator U3B, the analog signal output circuit 31 and the digital signal output circuit 32 are all connected with the signal processing chip U6. When the device works, the signal isolation chip U9 is used for coupling data and then transmitting the data to the signal processing chip U6 for data analysis processing, and in specific implementation, the signal processing chip U6 analyzes by reading a value in a register, and can provide parameters such as voltage, current, frequency, power factor, running time, temperature, active power, reactive power, active electric energy, reactive electric energy, apparent electric energy, controller state, load state, signal strength and the like to the Web platform end after analysis so that the Web platform end can present the data; the analog signal output circuit 31 is used for amplifying and outputting an analog signal, the digital signal output circuit 32 is used for amplifying and outputting a digital signal, and the driving isolator U3B is used for realizing driving isolation.

In the present invention, the analog signal output circuit 31 includes a transistor Q3, an amplifier U5A, and a first voltage follower circuit 311; the base of the transistor Q3 is connected with the signal processing chip U6, the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 is connected with the positive input end of the amplifier U5A; the negative input of the amplifier U5A is connected to the output of the amplifier U5A through the first voltage follower circuit 311. The first voltage follower circuit 311 is configured to change the output voltage with the input voltage, so as to reduce signal loss and achieve buffering and isolation effects.

In the present invention, the digital signal output circuit 32 includes a transistor Q5, an amplifier U5B, a smoothing filter circuit 321, and a second voltage follower circuit 322; the base of the transistor Q5 is connected with the signal processing chip U6, the emitter of the transistor Q5 is grounded, and the collector of the transistor Q5 is connected with the positive input end of the amplifier U5B; the smoothing filter circuit 321 is disposed between the emitter and the collector of the transistor Q5; the negative input of the amplifier U5B is connected to the output of the amplifier U5B through the second voltage follower circuit 322. The second voltage follower circuit 322 is used for realizing that the output voltage follows the input voltage, reducing the signal loss and playing the roles of buffering and isolating; the smoothing filter circuit 321 is used to implement a filtering process. In this embodiment, the smoothing filter circuit 321 is formed by a resistor R58, a resistor R59, a capacitor C49 and a capacitor C50, which together form two-stage filtering, so as to achieve better filtering effect.

In the present invention, the data processing circuit 3 further includes a first capacitive filter circuit 33; the first capacitive filter circuit 33 is connected to the signal processing chip U6. The first capacitor filter circuit 33 is used for filtering the supplied 3.3V dc power and supplying the filtered power to the signal processing chip U6 for use.

In the present invention, the data processing circuit 3 further includes a first reset circuit 34; the first reset circuit 34 is connected to the signal processing chip U6. The first reset circuit 34 is used for resetting the signal processing chip U6. In the present embodiment, the first reset circuit 34 includes a capacitor C44, a capacitor C45, a resistor R55, a key switch SW1, and a capacitor C47.

In the present invention, the data processing circuit 3 further includes a crystal oscillator circuit 35; the crystal oscillator circuit 35 is connected to the signal processing chip U6, and the crystal oscillator circuit 35 is configured to provide an external crystal oscillator. In the present embodiment, the crystal oscillator circuit 35 includes a crystal oscillator Y2, a capacitor C42, and a capacitor C43.

In the present invention, the communication circuit 4 includes an NBiot processing chip U7 and an NBiot impedance matching circuit 41 connected to the NBiot processing chip U7. The NBiot impedance matching circuit 41 is used to implement an impedance matching function. In the present embodiment, the NBiot impedance matching circuit 41 includes an antenna J1, a resistor R40, a capacitor C24, and a capacitor C25.

In the present invention, the communication circuit 4 further includes a level conversion circuit 42; the level shift circuit 42 is connected to the NBiot processing chip U7. In specific operation, the level conversion circuit 42 is configured to convert the 3.3V dc power into 1.8V dc power for the NBiot processing chip U7 and the NBiot impedance matching circuit 41. In the present embodiment, the level shift circuit 42 includes a resistor R48, a transistor Q6, a resistor R47, a capacitor C27, a capacitor C26, a resistor R45, a resistor R46, and a transistor Q7.

In the present invention, the output terminal of the level shift circuit 42 is connected to the NBiot impedance matching circuit 41 through a capacitor C23 to provide the required 1.8V power. Among them, the capacitor C23 plays a role of filtering.

In the present invention, the communication circuit 4 further includes a SIM card circuit 43; the SIM card circuit 43 is connected to the NBiot processing chip U7. The SIM card circuit 43 is used for inserting a SIM card to realize network access registration.

In the present invention, the communication circuit 4 further includes a power-on circuit 44; the boot circuit 44 is connected to the NBiot processing chip U7. The boot circuit 44 is used for starting the NBiot processing chip U7 to work. In the present embodiment, the power-on circuit 44 includes a transistor Q5, a resistor R43, and a resistor R44.

In the present invention, the communication circuit 4 further includes a second reset circuit 45; the second reset circuit 45 is connected to the NBiot processing chip U7. The second reset circuit 45 is used for resetting the NBiot processing chip U7. In this embodiment, the second reset circuit 45 includes a transistor Q3, a resistor R38, and a resistor R39.

In the present invention, the communication circuit 4 further comprises a second capacitive filter circuit 46; the second capacitor filter circuit 46 is connected to the NBiot processing chip U7, and the second capacitor filter circuit 46 is configured to filter the supplied 3.3V dc power and provide the filtered dc power to the NBiot processing chip U7 for use. In the present embodiment, the second capacitive filter circuit 46 includes a capacitor C19, a capacitor C20, a capacitor C21, and a capacitor C22.

In the present invention, the communication circuit 4 further includes a signal indicator light circuit 47; the signal indicator circuit 47 is connected with the NBiot processing chip U7. In operation, the signal indicator light circuit 47 is used to indicate the operating state of the communication circuit 4. In the present embodiment, the signal indicator circuit 47 includes a light emitting diode LED-Y1, a resistor R35, a transistor Q2, a resistor R36, and a resistor R37.

In the present invention, the positioning circuit 5 is a GPS positioning circuit. In the present embodiment, the positioning circuit 5 includes an antenna J2, a resistor R49, a capacitor C28, and a capacitor C29; in operation, the longitude and latitude coordinates and the current local time can be obtained in real time through the positioning circuit 5. Of course, the invention is not limited to this, and other positioning circuits (such as a beidou positioning circuit) can be adopted in specific implementation, and only the acquisition of longitude and latitude and time can be realized.

Referring to fig. 1 to 12, a method for off-line operation of a controller according to the present invention, the method using the controller, includes the following steps:

step S1, the controller is powered on to carry out system initialization;

step S2, performing network access registration (i.e., SIM card network access registration) on the load device 6 accessing the controller; after the registration is successful, automatically acquiring position information in real time through the positioning circuit 5, wherein the position information at least comprises longitude and latitude and current time;

step S3, receiving a control instruction carrying running time issued by the web end platform; controlling the load equipment 6 to operate in the running time based on the control instruction, and simultaneously recording the running time in the control instruction as an initial condition of offline self-learning and offline operation; the run time comprises a start time and an end time;

step S4, before the next operation of the load device 6, obtaining the recorded start time and the current time in the location information, comparing, when the current time exceeds the recorded start time and reaches the set timeout time, if a control instruction issued by the web-end platform is not received, determining that the load device is in an offline state, and at this time, controlling the load device 6 to operate according to the last recorded initial condition; if a control instruction sent by the web end platform is received, it is determined that the load device 6 is in the online state, and then the process proceeds to step S3. After the practical application of the present invention, as a preferred embodiment, the timeout time is set to 20 minutes. Of course, the present invention is not limited thereto, and the timeout period can be set according to the requirement in the specific implementation.

The method comprises the steps that after load equipment is successfully registered, the positioning circuit 5 automatically acquires position information in real time, and records the running time in a control instruction as an initial condition of offline self-learning and offline running after the control instruction carrying the running time is issued by a web end platform; when the subsequent load device 6 cannot normally receive the control instruction due to low signal intensity or insufficient coverage of the base station, the offline control can be performed by combining the recorded initial condition and the acquired position information with big data analysis, and the phenomenon that the controller is out of control can not occur under the condition that the system is not powered down.

In step S1 of the present invention, during the power-up initialization of the controller, the operation of the AC-DC power supply circuit 1 is as follows: the alternating current is subjected to filtering processing through an EMC filter circuit 12 after being protected by a fuse FU1 and an MOV1 of a lightning protection protector, the alternating current after the filtering processing enters a rectifying circuit 13 for rectification, and the rectified alternating current outputs 1.414 times of input voltage and enters a pi-type filter circuit 14 for filtering processing, so that the pulsating alternating current is converted into pulsating direct current; in the first switching period, the resistor R7, the resistor R10 and the resistor R15 jointly start the transformer TR1 to work, an internal switch of the power management chip U5 is closed, current flows into the ground GND through a primary coil of the transformer TR1, a DS pole of the power management chip U5, the resistor R27, the resistor R28 and the resistor R29 to form a closed loop, and energy is stored in the primary coil of the transformer TR 1; since the dotted terminals of the secondary coil and the auxiliary winding of the transformer TR1 are opposite to the dotted terminal of the primary coil, no energy is transferred at this time; when the second switching period is reached, the polarity of the transformer TR1 phenomenon is reversed, the energy stored in the primary coil is transferred to the secondary coil and the auxiliary winding, the secondary coil outputs two paths of signals to power the electric quantity monitoring circuit 2, the data processing circuit 3, the communication circuit 4 and the positioning circuit 5 after rectification and filtering, and the auxiliary winding outputs one path of voltage to power the control circuit of the primary coil after rectification and filtering, so that the energy storage process of the next round is started. Because the starting power of the resistor R7, the resistor R10 and the resistor R15 is relatively large, if the starting is carried out through the resistor R7, the resistor R10 and the resistor R15 all the time, relatively large energy loss is caused; and the auxiliary winding replaces the resistor R7, the resistor R10 and the resistor R15 to carry out subsequent energy storage starting, so that the energy loss can be greatly reduced.

In specific implementation, a user can write in street lamp lighting data (such as a lighting PWM signal or an analog signal, an over-temperature threshold, an over-current threshold, an over-voltage threshold, an under-voltage threshold, a signal uploading interval and the like in each period) through a Web end platform, and when the system platform is operated for the first time, the street lamp lighting data are issued to a controller of the load device through the NBiot platform according to a set value of the user, the controller receives the signals, sends the data into the UART0 of the signal processing chip U6 through UART serial port communication, performs related conversion through an agreed protocol, and finally outputs the data signals to the controller for storage through the analog signal output circuit 31 and the digital signal output circuit 32.

In the present invention, after the step S2, the method further includes:

and step S21, reporting the online information of the load device 6 to the web-side platform, so that the web-side platform can perform remote control and obtain the working parameters of the load device 6 for presentation.

In the present invention, the step S21 further includes: and acquiring the electric quantity parameter information of the load equipment 6 through the electric quantity monitoring circuit 2, and uploading the position information and the electric quantity parameter information to a web end platform for the web end platform to present data. The electric quantity parameter information can comprise various electric quantity parameter signals such as voltage, current, power, frequency, temperature and the like.

In specific implementation, the sampling chip U4 processes the acquired signal as follows: the primary electric energy sampling is carried out through a sampling resistor RS1, and voltage and frequency sampling is carried out through a sampling resistor R2\ sampling resistor R5; the current signal sampled by the sampling resistor RS1 is sent into the current channel gain programmable amplifier for signal amplification through 15Pin and 16Pin of the sampling chip U4, and the voltage and frequency signals sampled by the sampling resistor R2\ sampling resistor R5 are sent into the gain amplifier of 10 times through 9Pin and 10Pin of the sampling chip U4 for amplification; the amplified current signal is digitized by a 4th Δ Σ modulator, and the amplified voltage and frequency signal is digitized by a 2th Δ Σ modulator; the digitized signal is sent to a digital filter to filter the low-pass signal and remove the high-frequency noise output by the modulator. The effective value of voltage measurement is shown as formula 1, wherein Vrms represents the effective value of voltage; the effective value of the current measurement is shown in equation 2, where Irms represents the effective value of the current, Σ represents the sum of the instantaneous values of the current samples, and N represents the number of times the instantaneous value of the current sample is sampled.

In the present invention, the step S21 further includes: the web end platform carries out real-time monitoring and early warning based on the received position information and electric quantity parameter information, and automatically pushes the early warning information to maintenance personnel through a background after the early warning information is monitored. In specific implementation, when the web end platform monitors conditions such as overcurrent, overvoltage, overtemperature, undervoltage and the like, early warning can be performed, and early warning information is generated and pushed to maintenance personnel to remind the maintenance personnel to perform timely treatment; the early warning information can comprise various useful information such as equipment position, early warning type, early warning time, fault reason and the like, so that maintenance personnel can quickly find corresponding load equipment.

In the present invention, the step S21 further includes: when monitoring that the load equipment 6 is off-line, the web-side platform performs off-line early warning, and automatically pushes early warning information to maintenance personnel through a background so that the maintenance personnel can process the early warning in time.

In step S21 of the present invention, after various electric parameter data collected by the sampling chip U4 are coupled by the signal isolation chip U9, the data are sent to 30Pin/29Pin/28Pin/27Pin/26Pin/25Pin of the signal processing chip U6, and the signal processing chip U6 performs data analysis processing, and in specific implementation, the signal processing chip U6 analyzes by reading a value in a register, and after analysis, parameters such as voltage, current, frequency, power factor, operating time, temperature, active power, reactive power, apparent power, controller state, load state, signal strength, etc. can be provided to the Web platform end, so that the Web platform end can present the data.

In the present invention, in the step S3, the control instruction further carries an adjustment parameter, and after receiving the control instruction, the system further controls the load device 6 to adjust the operation parameter based on the adjustment parameter in the control instruction, for example, to adjust the brightness of the street lamp to be high or low; and simultaneously recording the adjusting parameters in the control command into initial conditions.

In the present invention, the step S4 further includes: in the process of off-line operation, when the load device 6 is on-line, receiving a control instruction which is issued by a web end platform and carries operation time and an adjustment parameter, and updating the operation time and the operation parameter of the off-line operation based on the control instruction; and simultaneously recording the running time and the adjusting parameters in the control command as initial conditions of offline self-learning and offline running.

The following describes the steps S3 and S4 in detail by way of a specific example: for example, in the evening of the first day, the running time carried in the control command is 19: 00-23: 30, and the brightness of the street lamp is adjusted to 70% by adjusting parameters; after receiving the control instruction, the controller records the starting time of 19:00, the ending time of 23:30 and the brightness of 70% as initial conditions of offline self-learning and offline operation; meanwhile, the street lamp is controlled to illuminate with the brightness of 70% at 19: 00-23: 30 on the first night.

In the evening of the second day, the controller can acquire the initial time 19:00 recorded in the evening of the first day and acquire the current time acquired by the positioning circuit 5 in real time; comparing the starting time with the current time, if the current time reaches 19:20 (starting time + overtime), the controller does not receive a control instruction issued by the web end platform, the controller can obtain the running time and the adjusting parameter recorded on the first day, namely the running time is 19: 00-23: 30, the brightness is 70%, and the street lamp is controlled to illuminate with the brightness of 70% at 19: 20-23: 30 in the evening on the second day; similarly, if the control instruction issued by the web end platform is not received by the evening of the third day, the controller still controls the street lamp to illuminate at a brightness of 70% at 19: 20-23: 30 on the evening of the third day. And if the controller receives a control instruction sent by the web end platform before 19:20 evening of the next day, recording the running time and the adjusting parameter received at night of the next day, and controlling the running of the street lamp according to the running time and the adjusting parameter received at night of the next day. And if the controller is on line and receives a control command issued by the web end platform after 19:20 nights on the next day, recording the running time and the adjusting parameter in the control command, and controlling the street lamp to run according to the newly received running time and adjusting parameter.

Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.

Claims

1. The utility model provides a take drive integration controller of off-line operation function which characterized in that: the controller comprises an AC-DC power supply circuit, an electric quantity monitoring circuit, a data processing circuit, a communication circuit and a positioning circuit; the electric quantity monitoring circuit is connected with the data processing circuit; the data processing circuit is connected with the communication circuit; the positioning circuit is connected with the communication circuit; the communication circuit is connected with load equipment; the electric quantity monitoring circuit, the data processing circuit, the communication circuit, the positioning circuit and the load equipment are all powered by the AC-DC power supply circuit.

2. The integrated driving controller with the off-line operation function according to claim 1, wherein: the AC-DC power supply circuit comprises an alternating current power supply, an EMC filter circuit, a rectifying circuit, a pi-type filter circuit, a transformer circuit, a first secondary isolation output circuit, a second secondary isolation output circuit and an auxiliary winding circuit;

3. The integrated driving controller with the off-line operation function as claimed in claim 2, wherein: the EMC filter circuit comprises a common-mode inductor LF1, a capacitor CX1, a resistor R3 and a resistor R6; the capacitor CX1 is arranged at the output end of the common-mode inductor LF 1; the resistor R3 and the resistor R6 are connected in series and then connected to two ends of the capacitor CX 1.

4. The integrated driving controller with the off-line operation function as claimed in claim 3, wherein: the lightning protection device comprises a common-mode inductor LF1 and a lightning protection device MOV1 arranged at the input end of the common-mode inductor LF 1.

5. The integrated driving controller with the off-line operation function as claimed in claim 4, wherein: also included is a fuse FU1 disposed in the line of the AC power source.

6. The integrated driving controller with the off-line operation function as claimed in claim 2, wherein: the pi-type filter circuit comprises a capacitor EC1, an inductor L1 and a capacitor EC 2; the capacitor EC1 and the capacitor EC2 are arranged at the output end of the rectifying circuit in parallel; the inductor L1 is connected between the capacitor EC1 and the capacitor EC 2.

7. The integrated driving controller with the off-line operation function as claimed in claim 6, wherein: the transformer circuit comprises a starting circuit, a first spike absorption circuit, a transformer TR1 and a power management chip U5;

8. The integrated driving controller with the off-line operation function as claimed in claim 7, wherein: the starting circuit comprises a resistor R7, a resistor R10 and a resistor R15 which are sequentially connected in series.

9. The integrated driving controller with the off-line operation function as claimed in claim 7, wherein: the first spike absorption circuit comprises a resistor R8, a resistor R11, a rectifier diode D2 and a capacitor C5; the resistor R8, the resistor R11 and the rectifier diode D2 are sequentially connected in series; the capacitor C5 is connected in parallel at two ends of the resistor R8 and the resistor R11 which are connected in series.

10. A method of off-line operation of a controller according to any of claims 1 to 9, wherein: the method comprises the following steps:

step S1, the controller is powered on to carry out system initialization;