Communication circuit and communication module applicable to smart industrial scene

Abstract

The invention discloses a communication circuit and a communication module applicable to an intelligent industrial scene, and relates to the technical field of electronics, the circuit comprises a detection circuit, an energy storage circuit, a first voltage conversion circuit and a baseband chip; a power supply is detected through a detection circuit, and when it is detected that the voltage provided by the power supply is insufficient, an energy storage circuit charged through the power supply is connected to a first voltage conversion circuit, so that the first voltage conversion circuit converts the energy storage voltage provided by the energy storage circuit into the required voltage of a baseband chip; the baseband chip can complete wireless communication work based on the temporary power supply, and a worker at the remote host is informed of the power supply fault of the current power supply. And when communication is disconnected due to damage of devices such as a baseband chip, the remote host cannot receive any information, so that a worker can determine a fault source according to whether the communication is disconnected or not and timely delegate a corresponding responsible maintainer for maintenance, and the cost is saved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a communication circuit and a communication module that can be applied to smart industrial scenarios. Background Art

[0002] With the continuous development of industrial automation, more and more automation equipment has begun to install communication modules, and transmit industrial data to the data center in real time through the communication modules, so as to more conveniently monitor the working status of the automation equipment. Generally, the communication module is powered by the power supply on the automation equipment so that the communication module can work. However, in some special cases, such as insufficient power supply or sudden power outage of the automation equipment, the communication module cannot receive enough power to work. At this time, the data center will directly disconnect from the communication module and cannot know whether the automation equipment has a power outage or other failure or the communication module has a failure.

[0003] In this case, since the source of the fault cannot be determined, and different types of fault sources require maintenance personnel in the corresponding technical field to repair, the staff cannot directly dispatch the corresponding maintenance personnel to the scene for repair, and must first conduct an on-site inspection to confirm the source of the fault. This will take a lot of time, the labor cost is high, and the loss of working hours is also serious. Summary of the invention

[0004] The main purpose of this application is to provide a communication circuit and a communication module that can be applied to smart industrial scenarios, aiming to solve the technical problem of how to perform temporary remote communication when the connected industrial automation equipment is underpowered or suddenly loses power.

[0005] To achieve the above-mentioned purpose, the present application provides a communication circuit applicable to a smart industrial scenario, the communication circuit comprising: a detection circuit, an energy storage circuit, a first voltage conversion circuit and a baseband chip; The first end of the detection circuit is connected to the power supply, the second end of the detection circuit is connected to the input end of the energy storage circuit, the third end of the detection circuit is connected to the output end of the energy storage circuit, the fourth end of the detection circuit is connected to the input end of the first voltage conversion circuit, and the output end of the first voltage conversion circuit is connected to the baseband chip; The energy storage circuit is used to be charged by the power supply; The detection circuit is used to connect the energy storage circuit to the first voltage conversion circuit when it is detected that the power supply voltage provided by the power supply does not exceed the first preset voltage; The first voltage conversion circuit is used to convert the energy storage voltage provided by the energy storage circuit into a second preset voltage when connected to the energy storage circuit, and provide the second preset voltage to the baseband chip to power the baseband chip.

[0006] In one embodiment, the detection circuit includes: a first diode, a first resistor, a first capacitor, a first PMOS transistor and a second PMOS transistor; The source of the first PMOS tube is connected to the output end of the energy storage circuit, the drain of the first PMOS tube is connected to the drain of the second PMOS tube, and the gate of the first PMOS tube is respectively connected to the gate of the second PMOS tube, the first end of the first resistor, the anode of the first diode, the input end of the energy storage circuit and the power supply; the source of the second PMOS tube is respectively connected to the input end of the first voltage conversion circuit, the cathode of the first diode and the first end of the first capacitor; the second end of the first resistor and the second end of the first capacitor are grounded.

[0007] In one embodiment, the energy storage circuit includes: a second resistor to a seventh resistor, a second capacitor, a controllable voltage regulator, a second diode, a third diode, a first N-type transistor, a first P-type transistor, a first light-emitting diode, a second light-emitting diode, and a battery; The first end of the second resistor is respectively connected to the second end of the detection circuit, the first end of the third resistor, the emitter of the first P-type transistor and the anode of the first light-emitting diode, the second end of the second resistor is connected to the anode of the second diode, and the cathode of the second diode is respectively connected to the base of the first N-type transistor, the first end of the second capacitor and the cathode of the controllable voltage-stabilizing tube; the reference end of the controllable voltage-stabilizing tube is respectively connected to the second end of the second capacitor, the first end of the fourth resistor and the first end of the fifth resistor; the collector of the first N-type transistor is respectively connected to the second end of the third resistor and the first end of the sixth resistor, and the second end of the sixth resistor is connected to the base of the first P-type transistor; the emitter of the first N-type transistor is respectively connected to the second end of the fourth resistor, the positive electrode of the battery and the anode of the second light-emitting diode; the collector of the first P-type transistor is connected to the anode of the third diode, and the cathode of the third diode and the cathode of the first light-emitting diode are connected to the first end of the seventh resistor; the anode of the controllable voltage-stabilizing tube, the second end of the fifth resistor, the cathode of the battery and the second end of the seventh resistor are grounded; the cathode of the second light-emitting diode is connected to the third end of the detection circuit.

[0008] In one embodiment, the first voltage conversion circuit includes: an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor, a fourth capacitor, a first inductor, a fourth diode and a BUCK chip; The input end of the BUCK chip is respectively connected to the cathode of the fourth diode, the first ends of the three capacitors and the first end of the eighth resistor, the enable end of the BUCK chip is connected to the second end of the eighth resistor, the output end of the BUCK chip is connected to the first end of the first inductor, the feedback end of the BUCK chip is respectively connected to the second end of the ninth resistor and the first end of the tenth resistor, the second end of the first inductor is respectively connected to the first end of the ninth resistor, the first end of the fourth capacitor and the baseband chip; the anode of the fourth diode is connected to the fourth end of the detection circuit; the second end of the third capacitor, the second end of the fourth capacitor and the second end of the tenth resistor are grounded.

[0009] In one embodiment, the communication circuit further comprises: a temperature control circuit; The input end of the temperature control circuit is respectively connected to the fourth end of the detection circuit and the input end of the traced first voltage conversion circuit; The temperature control circuit is used to cool the energy storage circuit when it is detected that the real-time temperature of the energy storage circuit is higher than the preset temperature, so that the real-time temperature is not higher than the preset temperature.

[0010] In one embodiment, the temperature control circuit includes: a fifth diode, a thermistor, an eleventh resistor, a twelfth resistor, a first NMOS transistor, a fifth capacitor and a miniature electric fan; The first end of the micro electric fan is respectively connected to the cathode of the fifth diode, the first end of the thermistor and the first end of the fifth capacitor, the second end of the micro electric fan is respectively connected to the second end of the fifth capacitor and the drain of the first NMOS tube, the gate of the first NMOS tube is connected to the second end of the twelfth resistor, the first end of the twelfth resistor is respectively connected to the second end of the thermistor and the first end of the eleventh resistor, the second end of the eleventh resistor and the source of the first NMOS tube are grounded.

[0011] In one embodiment, the communication circuit further includes: a second voltage conversion circuit and a radio frequency circuit; The input end of the second voltage conversion circuit is respectively connected to the input end of the first voltage conversion circuit and the fourth end of the detection circuit, the output end of the second voltage conversion circuit is connected to the radio frequency circuit, and the radio frequency circuit is also connected to the baseband chip; The second voltage conversion circuit is used to convert the power supply voltage or the energy storage voltage into a third preset voltage, and provide the third preset voltage to the radio frequency circuit to power the radio frequency circuit; The baseband chip is further used to output a digital baseband signal to the radio frequency circuit when receiving power; The radio frequency circuit is further configured to output a corresponding radio frequency signal when receiving power and the digital baseband signal.

[0012] In one embodiment, the second voltage conversion circuit includes: a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a sixth diode, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first operational amplifier, and a second NMOS tube; The positive input terminal of the first operational amplifier is respectively connected to the second end of the fifteenth resistor and the first end of the seventh capacitor, the reverse input terminal of the first operational amplifier is respectively connected to the second end of the sixteenth resistor, the first end of the seventeenth resistor and the second end of the eighth capacitor, the output terminal of the first operational amplifier is connected to the gate of the second NMOS tube, the source of the second NMOS tube is respectively connected to the first end of the sixteenth resistor, the first end of the eighth capacitor, the first end of the ninth capacitor and the radio frequency circuit, the drain of the second NMOS tube is connected to the first end of the thirteenth resistor, the first end of the sixth capacitor and the cathode of the sixth diode, and the anode of the sixth diode is respectively connected to the input terminal of the first voltage conversion circuit and the fourth end of the detection circuit; the second end of the sixth capacitor, the second end of the seventh capacitor, the second end of the fourteenth resistor, the second end of the seventeenth resistor and the second end of the ninth capacitor are grounded.

[0013] In one embodiment, the detection circuit is further configured to connect the power supply to the first voltage conversion circuit when detecting that the power supply voltage exceeds the first preset voltage; The first voltage conversion circuit is further used to convert the power supply voltage into the second preset voltage when connected to the power supply, and provide the second preset voltage to the baseband chip to power the baseband chip.

[0014] In addition, to achieve the above-mentioned purpose, the present application also provides a communication module that can be applied to smart industrial scenarios, and the communication module that can be applied to smart industrial scenarios adopts the communication circuit that can be applied to smart industrial scenarios as described above.

[0015] The present application provides a communication circuit and a communication module that can be applied to smart industrial scenarios, wherein the communication circuit includes: a detection circuit, an energy storage circuit, a first voltage conversion circuit and a baseband chip; the first end of the detection circuit is connected to a power supply, the second end of the detection circuit is connected to an input end of the energy storage circuit, the third end of the detection circuit is connected to an output end of the energy storage circuit, the fourth end of the detection circuit is connected to an input end of the first voltage conversion circuit, and the output end of the first voltage conversion circuit is connected to the baseband chip; the energy storage circuit is used to be charged by the power supply; the detection circuit is used to connect the energy storage circuit to the first voltage conversion circuit when it is detected that the power supply voltage provided by the power supply does not exceed a first preset voltage; the first voltage conversion circuit is used to convert the energy storage voltage provided by the energy storage circuit into a second preset voltage when connected to the energy storage circuit, and provide the second preset voltage to the baseband chip to power the baseband chip.

[0016] The voltage provided by the power supply is detected by the detection circuit. When it is detected that the voltage provided by the power supply is insufficient, the energy storage circuit charged by the power supply is connected to the first voltage conversion circuit, so that the first voltage conversion circuit converts the energy storage voltage provided by the energy storage circuit into the required voltage of the baseband chip, and temporarily powers the baseband chip, thereby ensuring that the baseband chip can complete wireless communication based on temporary power supply, and inform the staff at the remote host that the current power supply has a power failure. When the baseband chip is damaged and the communication with the remote host is disconnected, the remote host will not receive any information. Therefore, once a fault occurs, the staff can quickly determine the source of the fault and promptly delegate the corresponding maintenance personnel to go to the site for repair, saving a lot of costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 A structural diagram of a communication circuit embodiment 1 of the present application that can be applied to a smart industrial scenario; Figure 2 A circuit connection diagram provided for the second embodiment of the communication circuit applicable to the smart industrial scenario of the present application; Figure 3A circuit connection diagram is provided for the third embodiment of the communication circuit of the present application which can be applied to smart industrial scenarios.

[0020] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0022] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0023] This application proposes a first embodiment of a communication circuit that can be applied to smart industrial scenarios. Please refer to Figure 1 , the communication circuit includes: a detection circuit 10, an energy storage circuit 20, a first voltage conversion circuit 30 and a baseband chip 40; The first end of the detection circuit 10 is connected to the power supply VCC, the second end of the detection circuit 10 is connected to the input end of the energy storage circuit 20, the third end of the detection circuit 10 is connected to the output end of the energy storage circuit 20, the fourth end of the detection circuit 10 is connected to the input end of the first voltage conversion circuit 30, and the output end of the first voltage conversion circuit 30 is connected to the baseband chip 40; The energy storage circuit 20 is used to be charged by the power supply VCC; The detection circuit 10 is used to connect the energy storage circuit 20 to the first voltage conversion circuit 30 when it is detected that the power supply voltage provided by the power supply VCC does not exceed the first preset voltage; The first voltage conversion circuit 30 is used to convert the energy storage voltage provided by the energy storage circuit 20 into a second preset voltage when connected to the energy storage circuit 20, and provide the second preset voltage to the baseband chip 40 to power the baseband chip 40.

[0024] It should be understood that in this embodiment, the power supply VCC can specifically be a power supply provided by an industrial automation device, and the industrial automation device can be connected to the communication module through a USB interface or other interfaces with communication functions and power supply functions, thereby establishing a communication relationship with the communication module and supplying power to the communication module. The communication module also establishes a wireless communication relationship with the remote host, and can transmit the data transmitted by the industrial automation device to the remote host so that the remote host can obtain the current status of the industrial automation device, or wirelessly receive commands sent by the remote host and transmit them to the industrial automation device to drive it to perform corresponding work.

[0025] It should be noted that, in this embodiment, the detection circuit 10 can detect whether the power supply VCC can provide sufficient voltage, so as to determine whether the power supply VCC has a power shortage or power failure. When the detection circuit 10 detects that the power supply voltage provided by the current power supply VCC does not exceed the first preset voltage, it can be considered that the current power supply VCC has a power shortage or power failure, that is, the industrial automation equipment has a power shortage or power failure. Among them, the first preset voltage refers to the lowest voltage in the normal voltage range of the power supply VCC.

[0026] It is easy to understand that in this embodiment, when the power supply VCC is in a normal state, the detection circuit 10 will connect the power supply VCC to the first voltage conversion circuit 30 and the energy storage circuit 20 respectively. When the energy storage circuit 20 is connected to the power supply VCC, it can be charged by the electric energy provided by the power supply VCC, or it can be understood as energy storage. When the first voltage conversion circuit 30 is connected to the power supply VCC, it can convert the power supply voltage provided by the power supply VCC into the second preset voltage required by the baseband chip 40, and provide it to the baseband chip 40, so that the baseband chip 40 can work normally based on the received second preset voltage. When the power supply VCC is in an abnormal situation (for example, power off or low voltage), the detection circuit 10 will detect that the power supply voltage provided by the power supply VCC cannot reach the first preset voltage. At this time, it can be considered that the current power supply VCC has a power shortage or power off fault. The energy storage circuit 20 can be directly connected to the first voltage conversion circuit 30, so that the energy storage circuit 20 can serve as a temporary power supply to provide energy storage voltage for the first voltage conversion circuit 30. The first voltage conversion circuit 30 can convert the energy storage voltage into a second preset voltage and transmit it to the baseband chip 40, thereby ensuring that the baseband chip 40 continues to work normally and maintains the wireless communication relationship between the communication module and the remote host.

[0027] Among them, even if a power failure occurs, there is still a wireless communication relationship between the communication module and the remote host, which will only cause the remote host to be unable to receive data from the industrial automation equipment. At this time, it can be determined that a fault has occurred at the industrial automation equipment, and the person in charge of the industrial automation equipment needs to be dispatched to repair it; if the wireless communication relationship between the communication module and the remote host is suddenly interrupted, it can be determined that a fault has occurred at the communication module, and the person in charge of the communication module needs to be dispatched to repair it. In this way, the source of the fault can be determined faster and more effectively, and the corresponding maintenance personnel can be promptly dispatched to the site for repair, reducing the loss of working hours, avoiding waste of manpower, and saving a lot of costs.

[0028] The present application provides a communication circuit that can be applied to smart industrial scenarios, and the communication circuit includes: a detection circuit, an energy storage circuit, a first voltage conversion circuit and a baseband chip; the first end of the detection circuit is connected to a power supply, the second end of the detection circuit is connected to the input end of the energy storage circuit, the third end of the detection circuit is connected to the output end of the energy storage circuit, the fourth end of the detection circuit is connected to the input end of the first voltage conversion circuit, and the output end of the first voltage conversion circuit is connected to the baseband chip; the energy storage circuit is used to charge through the power supply; the detection circuit is used to connect the energy storage circuit to the first voltage conversion circuit when it is detected that the power supply voltage provided by the power supply does not exceed the first preset voltage; the first voltage conversion circuit is used to convert the energy storage voltage provided by the energy storage circuit into a second preset voltage when connected to the energy storage circuit, and provide the second preset voltage to the baseband chip to power the baseband chip. The voltage provided by the power supply is detected by the detection circuit. When it is detected that the voltage provided by the power supply is insufficient, the energy storage circuit charged by the power supply is connected to the first voltage conversion circuit, so that the first voltage conversion circuit converts the energy storage voltage provided by the energy storage circuit into the required voltage of the baseband chip, and temporarily powers the baseband chip, thereby ensuring that the baseband chip can complete wireless communication based on temporary power supply, and inform the staff at the remote host that the current power supply has a power failure. When the baseband chip is damaged and the communication with the remote host is disconnected, the remote host will not receive any information. Therefore, once a fault occurs, the staff can quickly determine the source of the fault and promptly delegate the corresponding maintenance personnel to go to the site for repair, saving a lot of costs.

[0029] Based on the first embodiment of the communication circuit applicable to the smart industrial scene of the present application, in the second embodiment of the communication circuit applicable to the smart industrial scene of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and no further description will be given later. Figure 2 , the detection circuit 10 includes: a first diode D1, a first resistor R1, a first capacitor C1, a first PMOS transistor Qp1 and a second PMOS transistor Qp2; The source of the first PMOS transistor Qp1 is connected to the output end of the energy storage circuit 20, the drain of the first PMOS transistor Qp1 is connected to the drain of the second PMOS transistor Qp2, and the gate of the first PMOS transistor Qp1 is respectively connected to the gate of the second PMOS transistor Qp2, the first end of the first resistor R1, the anode of the first diode D1, the input end of the energy storage circuit 20 and the power supply VCC; the source of the second PMOS transistor Qp2 is respectively connected to the input end of the first voltage conversion circuit 30, the cathode of the first diode D1 and the first end of the first capacitor C1; the second end of the first resistor R1 and the second end of the first capacitor C1 are grounded.

[0030] It should be noted that, in this embodiment, the first PMOS transistor Qp1 and the second PMOS transistor Qp2 may be of the same type, and the first preset voltage may be a threshold voltage of the first PMOS transistor Qp1 and the second PMOS transistor Qp2.

[0031] In a specific implementation, the first PMOS tube Qp1 and the second PMOS tube Qp2 are arranged back to back, which can effectively control the bidirectional transmission of current and avoid power loss, and can realize the control of the on-off state of the connection loop and reduce the leakage current in the connection loop. The first resistor R1 is located between the power supply VCC and the ground line, and is used to provide a power supply voltage. When the power supply voltage at both ends of the first resistor R1 is lower than the first preset voltage, it can be understood that the power supply VCC may be abnormal, and the first PMOS tube Qp1 and the second PMOS tube Qp2 are turned on at the same time, connecting the output end of the energy storage circuit 20 and the input end of the first voltage conversion circuit 30; when the power supply voltage at both ends of the first resistor R1 is not lower than the first preset voltage, it can be understood that the power supply VCC is normally supplied, the first PMOS tube Qp1 and the second PMOS tube Qp2 are turned off at the same time, and the power supply VCC can normally charge the energy storage circuit 20 and provide the power supply voltage to the first voltage conversion circuit 30 through the first diode D1. The first capacitor C1 is used to filter the power supply voltage output to the first voltage conversion circuit 30 to reduce the peak current generated when the switch devices (the first PMOS transistor Qp1 and the second PMOS transistor Qp2) are switched.

[0032] Further, in the present embodiment, the energy storage circuit 20 includes: a second resistor R2 to a seventh resistor R7, a second capacitor C2, a controllable voltage regulator Dw, a second diode D2, a third diode D3, a first N-type transistor Vn1, a first P-type transistor Vp1, a first light-emitting diode LED1, a second light-emitting diode LED2 and a battery BT; The first end of the second resistor R2 is respectively connected to the second end of the detection circuit 10, the first end of the third resistor R3, the emitter of the first P-type transistor Vp1 and the anode of the first light-emitting diode LED1, the second end of the second resistor R2 is connected to the anode of the second diode D2, and the cathode of the second diode D2 is respectively connected to the base of the first N-type transistor Vn1, the first end of the second capacitor C2 and the cathode of the controllable voltage-stabilizing tube Dw; the reference end of the controllable voltage-stabilizing tube Dw is respectively connected to the second end of the second capacitor C2, the first end of the fourth resistor R4 and the first end of the fifth resistor R5; the collector of the first N-type transistor Vn1 is respectively connected to the second end of the third resistor R3 and the collector of the sixth resistor R6 The first end and the second end of the sixth resistor R6 are connected to the base of the first P-type transistor Vp1; the emitter of the first N-type transistor Vn1 is respectively connected to the second end of the fourth resistor R4, the positive electrode of the battery BT and the anode of the second light-emitting diode LED2; the collector of the first P-type transistor Vp1 is connected to the anode of the third diode D3, and the cathode of the third diode D3 and the cathode of the first light-emitting diode LED1 are connected to the first end of the seventh resistor R7; the anode of the controllable voltage regulator Dw, the second end of the fifth resistor R5, the cathode of the battery BT, and the second end of the seventh resistor R7 are grounded; the cathode of the second light-emitting diode LED2 is connected to the third end of the detection circuit 10.

[0033] It should be noted that, in this embodiment, the first N-type transistor Vn1 and the first P-type transistor Vp1 form a cascade amplifier circuit for amplifying current. The second resistor R2 is a current-limiting resistor for the base of the first N-type transistor Vn1, the third resistor R3 is a current-limiting resistor for the collector of the first N-type transistor Vn1, the sixth resistor R6 is a current-limiting resistor for the base of the first P-type transistor Vp1, and the fourth resistor R4 and the fifth resistor R5 are connected in series and in parallel with the battery BT, which are used to divide the energy storage voltage provided by the battery BT, and transmit the divided voltage to the controlled voltage regulator to control the operation of the first N-type transistor Vn1. The first light-emitting diode LED1 is used to emit light when charging the battery BT, and the second light-emitting diode LED2 is used to emit light when the battery BT is discharged, which plays the function of indicating the working status.

[0034] In a specific implementation, when the power supply VCC can normally provide the power supply voltage, the first N-type transistor Vn1 and the first P-type transistor Vp1 are turned on, and the current flows to the emitter through the base and collector of the first N-type transistor Vn1, and charges the battery BT. At this time, the voltage of the battery BT is divided by the fourth resistor R4 and the eighth resistor R8, and the divided voltage is provided to the reference end of the controllable voltage regulator Dw. Since the current voltage of the battery BT is too low, the controllable voltage regulator Dw will not be reversely conducted, and the base of the first N-type transistor Vn1 always has current input, and the circuit as a whole maintains the working state of charging the battery BT. The first P-type transistor Vp1 provides an amplified driving current for the first N-type transistor Vn1, a part of which is transmitted from the base of the first P-type transistor Vp1 to the collector of the first N-type transistor Vn1 through the sixth resistor R6, and the other part flows to the ground through the third diode D3 and the seventh resistor R7. At this time, the first light emitting diode LED1 also has current flowing through it and is in a conducting state, emitting light to indicate that the energy storage circuit 20 is currently in a charging state.

[0035] When the battery BT has stored enough electrical energy, the voltage division provided by the fourth resistor R4 and the fifth resistor R5 for the controllable voltage regulator Dw will cause the controllable voltage regulator Dw to conduct in reverse. At this time, the current will be discharged to the ground by the reverse-conducting controllable voltage regulator Dw, and the first N-type transistor Vn1 and the first P-type transistor Vp1 will not work, and the battery BT will stop charging, thereby playing the role of overcharge protection.

[0036] When the power supply VCC cannot provide the power supply voltage normally, the first N-type transistor Vn1 and the first P-type transistor Vp1 do not work, and the detection circuit 10 connects the positive electrode of the battery BT to the first voltage conversion circuit 30, and provides the energy storage voltage of the battery BT to the first voltage conversion circuit 30. At this time, the second light-emitting diode LED2 is in the on state, and emits light to indicate that the current energy storage circuit 20 is in the discharge state.

[0037] It is worth noting that in this embodiment, the second diode D2 and the third diode D3 are used for rectification to prevent reverse current transmission, and the second capacitor C2 is used for filtering to prevent the peak current generated by reverse conduction of the reliable voltage regulator from damaging the circuit.

[0038] Further, in this embodiment, the first voltage conversion circuit 30 includes: an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a third capacitor C3, a fourth capacitor C4, a first inductor L1, a fourth diode D4 and a BUCK chip U0; The input end of the BUCK chip U0 is respectively connected to the cathode of the fourth diode D4, the first ends of the three capacitors and the first end of the eighth resistor R8, the enable end of the BUCK chip U0 is connected to the second end of the eighth resistor R8, the output end of the BUCK chip U0 is connected to the first end of the first inductor L1, the feedback end of the BUCK chip U0 is respectively connected to the second end of the ninth resistor R9 and the first end of the tenth resistor R10, the second end of the first inductor L1 is respectively connected to the first end of the ninth resistor R9, the first end of the fourth capacitor C4 and the baseband chip 40; the anode of the fourth diode D4 is connected to the fourth end of the detection circuit 10; the second end of the third capacitor C3, the second end of the fourth capacitor C4 and the second end of the tenth resistor R10 are grounded.

[0039] It should be noted that the first voltage conversion circuit 30 is actually a DC buck circuit. In this embodiment, the fourth diode D4 is used for rectification to prevent current backflow; the third capacitor C3 is used to filter the input current, and the fourth capacitor C4 is used to filter the current output to the baseband chip 40; the eighth resistor R8 is used to limit the current of the enable end of the BUCK chip U0, and the series structure formed by the ninth resistor R9 and the tenth resistor R10 is used to divide the output voltage and provide feedback to the BUCK chip U0 to adjust the output voltage to the second preset voltage; the first inductor L1 is used for energy storage, and through its charging and discharging, it cooperates with the BUCK chip U0 to achieve the buck function.

[0040] Based on the first embodiment and / or the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those of the above-mentioned first and second embodiments can refer to the above introduction, and will not be repeated later. Figure 3 , the communication circuit further comprises: a temperature control circuit 50; The input end of the temperature control circuit 50 is respectively connected to the fourth end of the detection circuit 10 and the input end of the traced first voltage conversion circuit 30; The temperature control circuit 50 is used to cool the energy storage circuit 20 when it is detected that the real-time temperature of the energy storage circuit 20 is higher than the preset temperature, so that the real-time temperature is not higher than the preset temperature.

[0041] It is easy to understand that the battery BT is prone to generate a lot of heat during the charging process. If too much heat is generated per unit time, it is easy to affect the communication and also affect the safety of the communication module. In this embodiment, a temperature control circuit 50 can be set near the energy storage circuit 20. The temperature control circuit 50 can detect the real-time temperature of the energy storage circuit 20 in real time. When it is detected that the real-time temperature is higher than the preset temperature that affects the communication quality or safety, the cooling mode can be turned on to cool the energy storage circuit 20 so that the real-time temperature of the energy storage circuit 20 is not higher than the preset temperature.

[0042] Furthermore, in this embodiment, the temperature control circuit 50 includes: a fifth diode D5, a thermistor Rt, an eleventh resistor R11, a twelfth resistor R12, a first NMOS transistor Qn1, a fifth capacitor C5 and a micro electric fan FAN; The first end of the micro electric fan FAN is respectively connected to the cathode of the fifth diode D5, the first end of the thermistor Rt and the first end of the fifth capacitor C5, the second end of the micro electric fan FAN is respectively connected to the second end of the fifth capacitor C5 and the drain of the first NMOS tube Qn1, the gate of the first NMOS tube Qn1 is connected to the second end of the twelfth resistor R12, the first end of the twelfth resistor R12 is respectively connected to the second end of the thermistor Rt and the first end of the eleventh resistor R11, the second end of the eleventh resistor R11 and the source of the first NMOS tube Qn1 are grounded.

[0043] It is easy to understand that a thermistor Rt can be set near the battery BT of the energy storage circuit 20 to detect the temperature of the energy storage circuit 20 in real time; and a micro electric fan FAN can be set toward the battery BT to cool the battery BT (energy storage circuit 20). In this embodiment, the fifth diode D5 is used for rectification, the thermistor Rt and the eleventh resistor R11 form a voltage dividing structure, the twelfth resistor R12 serves as a current limiting resistor of the gate of the first NMOS tube Qn1, and the fifth capacitor C5 serves as a freewheeling capacitor of the micro electric fan FAN. In a specific implementation, the actual resistance value of the thermistor Rt will decrease with the increase of temperature. When the thermistor Rt detects that the real-time temperature of the energy storage circuit 20 exceeds the preset temperature, the voltage divided by the eleventh resistor R11 (the voltage provided to the gate of the first NMOS tube Qn1) will exceed the threshold voltage of the first NMOS tube Qn1, the first NMOS tube Qn1 is turned on, and the micro electric fan FAN starts to blow air toward the energy storage circuit 20, thereby achieving cooling of the energy storage circuit 20.

[0044] Furthermore, in this embodiment, the communication circuit further includes: a second voltage conversion circuit 60 and a radio frequency circuit 70; The input end of the second voltage conversion circuit 60 is respectively connected to the input end of the first voltage conversion circuit 30 and the fourth end of the detection circuit 10, and the output end of the second voltage conversion circuit 60 is connected to the RF circuit 70, and the RF circuit 70 is also connected to the baseband chip 40; The second voltage conversion circuit 60 is used to convert the power supply voltage or the energy storage voltage into a third preset voltage, and provide the third preset voltage to the RF circuit 70 to power the RF circuit 70; The baseband chip 40 is also used to output a digital baseband signal to the radio frequency circuit 70 when receiving power; The RF circuit 70 is further configured to output a corresponding RF signal when receiving power and the digital baseband signal.

[0045] It should be noted that, in this embodiment, the communication function of the communication module also needs to be implemented by the RF circuit 70, so when providing power to the baseband chip 40, it is also necessary to provide power to the RF circuit 70. However, in actual situations, the voltage required by the RF circuit 70 is different from the voltage required by the baseband chip 40, so a separate second voltage conversion circuit 60 needs to be provided for the RF circuit 70.

[0046] It is easy to understand that in this embodiment, a second voltage conversion circuit 60 can also be set at the input end of the first voltage conversion circuit 30, which is used to convert the power supply voltage provided by the power supply VCC or the energy storage voltage provided by the energy storage circuit 20 into the third preset voltage required by the radio frequency circuit 70. When the radio frequency circuit 70 receives the third preset voltage, it can work normally, and at the same time, when the baseband chip 40 receives the second preset voltage transmitted by the first voltage conversion circuit 30, it can also work normally, so that the communication function can be realized. More specifically, when the baseband chip 40 works based on the second preset voltage, it can generate a corresponding digital baseband signal based on the information previously transmitted by the industrial automation equipment (the information may include fault information, etc.), and transmit the digital baseband signal to the radio frequency circuit 70. When the radio frequency circuit 70 works based on the third preset voltage, it can convert the digital baseband signal into a radio frequency signal, and convert it into an electromagnetic wave through the antenna on the communication module and send it to the remote host, so as to communicate with the remote host.

[0047] Further, in the present embodiment, the second voltage conversion circuit 60 includes: a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, a sixth diode D6, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a first operational amplifier A1, and a second NMOS transistor Qn2; The positive input terminal of the first operational amplifier A1 is respectively connected to the second end of the fifteenth resistor R15 and the first end of the seventh capacitor C7, the reverse input terminal of the first operational amplifier A1 is respectively connected to the second end of the sixteenth resistor R16, the first end of the seventeenth resistor R17 and the second end of the eighth capacitor C8, the output terminal of the first operational amplifier A1 is connected to the gate of the second NMOS transistor Qn2, the source of the second NMOS transistor Qn2 is respectively connected to the first end of the sixteenth resistor R16, the first end of the eighth capacitor C8, the first end of the ninth capacitor C9 and the radio frequency circuit 70, the drain of the second NMOS transistor Qn2 is connected to the first end of the thirteenth resistor R13, the first end of the sixth capacitor C6 and the cathode of the sixth diode D6, the anode of the sixth diode D6 is respectively connected to the input terminal of the first voltage conversion circuit 30 and the fourth end of the detection circuit 10; the second end of the sixth capacitor C6, the second end of the seventh capacitor C7, the second end of the fourteenth resistor R14, the second end of the seventeenth resistor R17 and the second end of the ninth capacitor C9 are grounded.

[0048] It is easy to understand that in this embodiment, the sixth diode D6 is used for rectification to prevent the reverse transmission of current; the thirteenth resistor R13 and the fourteenth resistor R14 constitute a voltage-dividing structure for providing a reference voltage for the positive input terminal of the first operational amplifier A1, and the fifteenth resistor R15 is used as a current-limiting resistor for the positive input terminal of the first operational amplifier A1; the sixteenth resistor R16 and the seventeenth resistor R17 constitute a voltage-dividing structure to divide the third preset voltage output to the radio frequency circuit 70, and provide the divided voltage to the reverse input terminal of the first operational amplifier A1. As can be seen from the above, the first operational amplifier A1 cooperates with the thirteenth resistor R13 to the seventeenth resistor R17 to form an error amplifier, which controls the conduction degree of the second NMOS tube Qn2 by comparing the voltage at the input terminal with the voltage at the output terminal, thereby realizing the function of linear voltage regulation and converting the power supply voltage or energy storage voltage into the third preset voltage.

[0049] Among them, the sixth capacitor C6 is used to filter the input voltage, the ninth capacitor C9 is used to filter the output voltage, the seventh capacitor C7 is used to filter the positive input terminal of the first operational amplifier A1, and the eighth capacitor C8 is used to filter the voltage output by the second NMOS tube Qn2, thereby ensuring that the entire circuit works more stably.

[0050] Furthermore, in this embodiment, the communication circuit further includes: a current limiting circuit 80; The input end of the current limiting circuit 80 is connected to the output end of the energy storage circuit 20, and the output end of the current limiting circuit 80 is connected to the third end of the detection circuit 10; The current limiting circuit 80 is used to limit the current output by the energy storage circuit 20 .

[0051] It should be noted that, in the present embodiment, the current limiting circuit 80 includes an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a second P-type transistor Vp2, and a third P-type transistor Vp3. The emitter of the second P-type transistor is connected to the second end of the eighteenth resistor R18, the base of the second P-type transistor Vp2 is connected to the second end of the nineteenth resistor R19 and the emitter of the third P-type transistor Vp3, and the collector of the second P-type transistor Vp2 is respectively connected to the base of the third P-type transistor Vp3 and the first end of the twentieth resistor R20; the first end of the eighteenth resistor R18 and the first end of the nineteenth resistor R19 are connected to the output end of the energy storage circuit 20, the second end of the twentieth resistor R20 is grounded, and the collector of the third P-type transistor Vp3 is connected to the third end of the detection circuit 10. The eighteenth resistor R18 is a current limiting resistor for the emitter of the second P-type transistor Vp2, the nineteenth resistor R19 is a current limiting resistor for the emitter of the third P-type transistor Vp3 and the base of the second P-type transistor Vp2, and the twentieth resistor R20 is a current limiting resistor for the collector of the second P-type transistor Vp2 and the base of the third P-type transistor Vp3.

[0052] In a specific implementation, when the energy storage circuit 20 starts to provide power to the subsequent circuit and its output current is normal, the second P-type transistor Vp2 is turned off, and the third P-type transistor Vp3 is turned on, and the current can be normally transmitted to the connected detection circuit 10, the first voltage conversion circuit 30 and other subsequent circuits through the nineteenth resistor R19 and the turned-on third P-type transistor Vp3; when the energy storage circuit 20 starts to provide power to the subsequent circuit, but its output current is abnormal (the current is too large), the second P-type transistor Vp2 is turned on, and part of the current is discharged to the base of the third P-type transistor Vp3, and the conduction degree of the third P-type transistor Vp3 begins to decrease, that is, the current flowing through begins to be limited. From the above discussion, it can be seen that the current limiting circuit 80 can realize automatic current limiting of the current output by the energy storage circuit 20 to prevent excessive current from damaging the subsequent circuit.

[0053] The embodiment of the present application also provides a communication module applicable to smart industrial scenarios, and the communication module applicable to smart industrial scenarios adopts the communication circuit applicable to smart industrial scenarios as described above. The communication module applicable to smart industrial scenarios provided by the embodiment of the present application adopts the communication circuit applicable to smart industrial scenarios as described above, which can solve the technical problem of how to conduct temporary remote communication when the connected industrial automation equipment is underpowered or suddenly loses power. Compared with the prior art, the beneficial effects of the communication module applicable to smart industrial scenarios provided by the embodiment of the present application are the same as the beneficial effects of the communication circuit applicable to smart industrial scenarios provided by the above-mentioned embodiment, which will not be repeated here.

[0054] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A communication circuit applicable to smart industrial scenarios, characterized in that: The communication circuit includes: a detection circuit, an energy storage circuit, a first voltage conversion circuit and a baseband chip; The first end of the detection circuit is connected to the power supply, the second end of the detection circuit is connected to the input end of the energy storage circuit, the third end of the detection circuit is connected to the output end of the energy storage circuit, the fourth end of the detection circuit is connected to the input end of the first voltage conversion circuit, and the output end of the first voltage conversion circuit is connected to the baseband chip; The energy storage circuit is used to be charged by the power supply; The detection circuit is used to connect the energy storage circuit to the first voltage conversion circuit when it is detected that the power supply voltage provided by the power supply does not exceed the first preset voltage; The first voltage conversion circuit is used to convert the energy storage voltage provided by the energy storage circuit into a second preset voltage when connected to the energy storage circuit, and provide the second preset voltage to the baseband chip to power the baseband chip.

2. The communication circuit applicable to smart industrial scenarios as claimed in claim 1, characterized in that: The detection circuit includes: a first diode, a first resistor, a first capacitor, a first PMOS tube and a second PMOS tube; The source of the first PMOS tube is connected to the output end of the energy storage circuit, the drain of the first PMOS tube is connected to the drain of the second PMOS tube, and the gate of the first PMOS tube is respectively connected to the gate of the second PMOS tube, the first end of the first resistor, the anode of the first diode, the input end of the energy storage circuit and the power supply; the source of the second PMOS tube is respectively connected to the input end of the first voltage conversion circuit, the cathode of the first diode and the first end of the first capacitor; the second end of the first resistor and the second end of the first capacitor are grounded.

3. The communication circuit applicable to smart industrial scenarios as claimed in claim 1, characterized in that: The energy storage circuit includes: a second resistor to a seventh resistor, a second capacitor, a controllable voltage regulator, a second diode, a third diode, a first N-type transistor, a first P-type transistor, a first light-emitting diode, a second light-emitting diode and a battery; The first end of the second resistor is respectively connected to the second end of the detection circuit, the first end of the third resistor, the emitter of the first P-type transistor and the anode of the first light-emitting diode, the second end of the second resistor is connected to the anode of the second diode, and the cathode of the second diode is respectively connected to the base of the first N-type transistor, the first end of the second capacitor and the cathode of the controllable voltage-stabilizing tube; the reference end of the controllable voltage-stabilizing tube is respectively connected to the second end of the second capacitor, the first end of the fourth resistor and the first end of the fifth resistor; the collector of the first N-type transistor is respectively connected to the second end of the third resistor and the first end of the sixth resistor, and the second end of the sixth resistor is connected to the base of the first P-type transistor; the emitter of the first N-type transistor is respectively connected to the second end of the fourth resistor, the positive electrode of the battery and the anode of the second light-emitting diode; the collector of the first P-type transistor is connected to the anode of the third diode, and the cathode of the third diode and the cathode of the first light-emitting diode are connected to the first end of the seventh resistor; the anode of the controllable voltage-stabilizing tube, the second end of the fifth resistor, the cathode of the battery and the second end of the seventh resistor are grounded; the cathode of the second light-emitting diode is connected to the third end of the detection circuit.

4. The communication circuit applicable to smart industrial scenarios according to claim 1, characterized in that: The first voltage conversion circuit includes: an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor, a fourth capacitor, a first inductor, a fourth diode and a BUCK chip; The input end of the BUCK chip is respectively connected to the cathode of the fourth diode, the first ends of the three capacitors and the first end of the eighth resistor, the enable end of the BUCK chip is connected to the second end of the eighth resistor, the output end of the BUCK chip is connected to the first end of the first inductor, the feedback end of the BUCK chip is respectively connected to the second end of the ninth resistor and the first end of the tenth resistor, the second end of the first inductor is respectively connected to the first end of the ninth resistor, the first end of the fourth capacitor and the baseband chip; the anode of the fourth diode is connected to the fourth end of the detection circuit; the second end of the third capacitor, the second end of the fourth capacitor and the second end of the tenth resistor are grounded.

5. The communication circuit applicable to smart industrial scenarios according to claim 1, characterized in that: The communication circuit also includes: a temperature control circuit; The input end of the temperature control circuit is respectively connected to the fourth end of the detection circuit and the input end of the traced first voltage conversion circuit; The temperature control circuit is used to cool the energy storage circuit when it is detected that the real-time temperature of the energy storage circuit is higher than the preset temperature, so that the real-time temperature is not higher than the preset temperature.

6. The communication circuit applicable to smart industrial scenarios as claimed in claim 5, characterized in that: The temperature control circuit includes: a fifth diode, a thermistor, an eleventh resistor, a twelfth resistor, a first NMOS tube, a fifth capacitor and a micro electric fan; The first end of the micro electric fan is respectively connected to the cathode of the fifth diode, the first end of the thermistor and the first end of the fifth capacitor, the second end of the micro electric fan is respectively connected to the second end of the fifth capacitor and the drain of the first NMOS tube, the gate of the first NMOS tube is connected to the second end of the twelfth resistor, the first end of the twelfth resistor is respectively connected to the second end of the thermistor and the first end of the eleventh resistor, the second end of the eleventh resistor and the source of the first NMOS tube are grounded.

7. The communication circuit applicable to smart industrial scenarios according to claim 1, characterized in that: The communication circuit further includes: a second voltage conversion circuit and a radio frequency circuit; The input end of the second voltage conversion circuit is respectively connected to the input end of the first voltage conversion circuit and the fourth end of the detection circuit, the output end of the second voltage conversion circuit is connected to the radio frequency circuit, and the radio frequency circuit is also connected to the baseband chip; The second voltage conversion circuit is used to convert the power supply voltage or the energy storage voltage into a third preset voltage, and provide the third preset voltage to the radio frequency circuit to power the radio frequency circuit; The baseband chip is further used to output a digital baseband signal to the radio frequency circuit when receiving power; The radio frequency circuit is further configured to output a corresponding radio frequency signal when receiving power and the digital baseband signal.

8. The communication circuit applicable to smart industrial scenarios as claimed in claim 7, characterized in that: The second voltage conversion circuit includes: a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a sixth diode, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a first operational amplifier and a second NMOS tube; The positive input terminal of the first operational amplifier is respectively connected to the second end of the fifteenth resistor and the first end of the seventh capacitor, the reverse input terminal of the first operational amplifier is respectively connected to the second end of the sixteenth resistor, the first end of the seventeenth resistor and the second end of the eighth capacitor, the output terminal of the first operational amplifier is connected to the gate of the second NMOS tube, the source of the second NMOS tube is respectively connected to the first end of the sixteenth resistor, the first end of the eighth capacitor, the first end of the ninth capacitor and the radio frequency circuit, the drain of the second NMOS tube is connected to the first end of the thirteenth resistor, the first end of the sixth capacitor and the cathode of the sixth diode, and the anode of the sixth diode is respectively connected to the input terminal of the first voltage conversion circuit and the fourth end of the detection circuit; the second end of the sixth capacitor, the second end of the seventh capacitor, the second end of the fourteenth resistor, the second end of the seventeenth resistor and the second end of the ninth capacitor are grounded.

9. The communication circuit applicable to a smart industrial scenario according to any one of claims 1 to 8, characterized in that: The detection circuit is further configured to connect the power supply to the first voltage conversion circuit when detecting that the power supply voltage exceeds the first preset voltage; The first voltage conversion circuit is further used to convert the power supply voltage into the second preset voltage when connected to the power supply, and provide the second preset voltage to the baseband chip to power the baseband chip.

10. A communication module applicable to smart industrial scenarios, characterized in that: The communication module adopts a communication circuit applicable to smart industrial scenarios as described in any one of claims 1-9.

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