CN210271195U - Circuit for operation monitoring equipment - Google Patents

Circuit for operation monitoring equipment Download PDF

Info

Publication number
CN210271195U
CN210271195U CN201921477576.1U CN201921477576U CN210271195U CN 210271195 U CN210271195 U CN 210271195U CN 201921477576 U CN201921477576 U CN 201921477576U CN 210271195 U CN210271195 U CN 210271195U
Authority
CN
China
Prior art keywords
module
reminding
time service
positioning
sending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201921477576.1U
Other languages
Chinese (zh)
Inventor
吴伟忠
赖志庆
刘书伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Beidou Xingsheng Education Technology Co ltd
Original Assignee
Guangdong Beidou Xingsheng Education Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Beidou Xingsheng Education Technology Co ltd filed Critical Guangdong Beidou Xingsheng Education Technology Co ltd
Priority to CN201921477576.1U priority Critical patent/CN210271195U/en
Application granted granted Critical
Publication of CN210271195U publication Critical patent/CN210271195U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Telephone Function (AREA)

Abstract

The utility model relates to a computer application technology field, its aim at provides a circuit for operation supervisory equipment. The utility model discloses a circuit for operation monitoring equipment, which comprises a processor module, a reminding module, a key module, a positioning and time service module and a power module; the processor module is used for sending a reminding instruction to the reminding module at preset time, stopping sending the reminding instruction to the reminding module after receiving the response signal, and receiving and sending positioning data and time service data; the reminding module is used for executing reminding operation after receiving the reminding instruction; the key module is used for acquiring a response signal and sending the response signal to the processor module; and the positioning and time service module is used for receiving the positioning data and the time service data and sending the positioning data and the time service data to the processor module. The utility model discloses be convenient for realize the management on duty to the staff, can ensure the authenticity of the staff condition of targetting in place.

Description

Circuit for operation monitoring equipment
Technical Field
The utility model relates to a computer application technology field especially relates to a circuit for operation supervisory equipment.
Background
The railway crossing refers to the intersection of a road and a railway plane, due to the fact that the speed of the train is high during operation, workers need to be arranged at the railway crossing with high traffic of vehicles and pedestrians to guard, the workers guide pedestrians and traveling vehicles in the passable time, and the workers stop the pedestrians and the traveling vehicles from passing when the train is about to arrive, so that the safety of the pedestrians and the traveling vehicles is guaranteed, and safety accidents are prevented.
At present, with the rapid increase of the number of railway kilometers in China year by year, the operation problems of railway workers are more and more concerned by people. In the prior art, the in-place situation of the on-duty workers is usually confirmed by oral reporting, sign-in and other modes, the authenticity of the in-place situation cannot be confirmed, meanwhile, the in-place situation of the on-duty workers is difficult to confirm in real time in working hours, and management holes exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that prior art exists, the utility model provides an operation is circuit for supervisory equipment.
The utility model adopts the technical proposal that:
a circuit for operation monitoring equipment comprises a processor module, a reminding module, a key module, a positioning and time service module and a power module, wherein the positioning and time service module, the key module, the reminding module and a storage module are all electrically connected with the processor module, and the power module is respectively electrically connected with the processor module, the positioning and time service module, the reminding module and the storage module;
the processor module is used for sending a reminding instruction to the reminding module at preset time, stopping sending the reminding instruction to the reminding module after receiving the response signal, and receiving and sending positioning data and time service data;
the reminding module is used for receiving the reminding instruction of the processor module and executing the reminding operation after receiving the reminding instruction;
the key module is used for acquiring a response signal and sending the response signal to the processor module;
the positioning and time service module is used for acquiring positioning data and time service data of the current operation monitoring equipment and then sending the positioning data and the time service data to the processor module;
and the power supply module is used for providing electric power support for the processor module, the reminding module and the positioning and time service module.
Preferably, the circuit for the operation monitoring device further includes a communication module;
and the communication module is used for realizing wireless communication between the processor module and the user terminal.
Further preferably, the communication module comprises a communication antenna, a communication chip and a SIM card;
the communication antenna is used for receiving a signal sent by the user terminal and then sending the received signal to the communication chip; the communication chip is also used for sending signals sent by the communication chip to the user terminal;
the communication chip is used for converting signals received by the communication antenna into digital signals, then transmitting the digital signals to the processor module, converting the signals sent by the processor module into analog signals and sending the analog signals to the communication antenna;
and the SIM card is used for storing the information of the appointed operation monitoring equipment and sending the information of the appointed operation monitoring equipment to the communication chip.
Preferably, the circuit for the operation monitoring device further includes a display module;
and the display module is used for receiving the transceiving positioning data and the time service data sent by the processor module and displaying the positioning information and the time service information.
Preferably, the power supply module comprises a direct current input module and a standby power supply module;
the direct current input module is used for receiving commercial power, converting the commercial power into direct current voltage, and then transmitting the direct current voltage to the standby power supply module, the processor module, the reminding module and the positioning and time service module;
the standby power supply module is used for receiving and charging the direct-current voltage transmitted by the direct-current input module, and then transmitting the direct-current voltage to the power supply module, the processor module, the reminding module and the positioning and time service module when the direct-current input module does not receive commercial power.
Preferably, the reminding module executes reminding operation in a mode of ringing, lighting and/or vibrating.
The utility model has the advantages that: the on-duty management of the workers is convenient to realize, and the authenticity of the in-place condition of the workers can be ensured. Particularly, the utility model discloses in the implementation, at first, processor module sends the warning instruction to reminding the module in scheduled time, reminds the module and carries out the warning operation after receiving reminding the instruction, sends the warning to the staff on duty; after receiving the prompt, the on-duty worker can confirm the in-place condition by pressing, and at the moment, the key module acquires a response signal of the user and sends the response signal to the processor module; in the process, the positioning and time service module receives positioning data and time service data of the GPS and/or the Beidou system and then sends the positioning data and the time service data to the processor module; the processor module receives the positioning data and the time service data in real time, stops sending a reminding instruction to the reminding module after receiving the response signal, and sends the positioning data and the time service data of the equipment to the user terminal, so that the condition that the on-duty worker is in place and the on-duty position information are sent to the user terminal, a manager can master the in-place condition of the on-duty worker, and false conditions are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a control block diagram of a circuit for an operation monitoring apparatus provided by the present invention;
FIG. 2 is a schematic circuit diagram of a processor module in a circuit for an operation monitoring device according to the present invention;
fig. 3 is a schematic circuit diagram of a reminding module in the circuit for the operation monitoring device provided by the present invention;
fig. 4 is a schematic circuit diagram of a key module in a circuit for an operation monitoring device provided by the present invention;
FIG. 5 is a schematic circuit diagram of a positioning and timing module in a circuit for an operation monitoring device according to the present invention;
fig. 6 is a schematic circuit diagram of a communication module in a circuit for an operation monitoring device according to the present invention;
fig. 7 is a schematic circuit diagram of a display module in a circuit for an operation monitoring device according to the present invention;
fig. 8 is a schematic circuit diagram of a memory module in the circuit for operation monitoring equipment provided by the present invention;
fig. 9 is a schematic circuit diagram of a dc input module in a power module in a circuit for an operation monitoring device according to the present invention;
fig. 10 is a schematic circuit diagram of a standby power supply module in a circuit for an operation monitoring device according to the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.
It will be understood that when an element is referred to herein as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. Conversely, if a unit is referred to herein as being "directly connected" or "directly coupled" to another unit, it is intended that no intervening units are present. In addition, other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
the embodiment provides a circuit for operation monitoring equipment, which comprises a processor module, a reminding module, a key module, a positioning and time service module and a power module, as shown in fig. 1, wherein in the embodiment, the positioning and time service module, the key module, the reminding module and the storage module are all electrically connected with the processor module, and the power module is respectively electrically connected with the processor module, the positioning and time service module, the reminding module and the storage module;
the processor module is used for sending a reminding instruction to the reminding module at preset time, stopping sending the reminding instruction to the reminding module after receiving the response signal, and receiving and sending positioning data and time service data; it should be understood that the processor module may continuously send the reminding instruction to the reminding module at a predetermined time point, or may be set to send the reminding instruction to the reminding module at a predetermined time period, where the schematic circuit diagram of the processor module may refer to fig. 2, and in this embodiment, the processor module is implemented by using a single chip microcomputer whose model is STM32F103C8T6, which is strong in universality.
The reminding module is used for receiving the reminding instruction of the processor module and executing the reminding operation after receiving the reminding instruction; in this embodiment, the reminding module may perform the reminding operation in a manner of ringing, lighting and/or vibrating, when the reminding module performs the reminding operation in a manner of ringing, the schematic circuit diagram of the reminding module may refer to fig. 3, and when the processor module sends the reminding instruction, the base of the first diode Q1 is at a high level, the first diode Q1 is turned on, and the buzzer is powered on to sound the ringing.
The key module is used for acquiring a response signal sent by the user terminal and sending the response signal to the processor module; referring to fig. 4, the key module may be provided with a plurality of operation keys connected in parallel, and then the plurality of operation keys are disposed at each position of the current operation monitoring device, so that the operator on duty may respond to the prompt sent by the prompt module.
The positioning and time service module is used for acquiring positioning data and time service data of the current operation monitoring equipment and then sending the positioning data and the time service data to the processor module; referring to fig. 5, a schematic circuit diagram of the positioning and time service module can be referred to, the positioning and time service module can analyze a satellite positioning signal into a standard position information data format, and then transmit the analyzed position information to the processor module through a serial port, so that the position coordinate of the current operation monitoring equipment is obtained, and accurate positioning is realized; meanwhile, the positioning and time service module can provide standard time of real-time position, and then sends the positioning data and the time service data to the processor module for processing.
In this embodiment, the positioning and time service module includes a positioning chip electrically connected to the processor module and a positioning antenna electrically connected to the positioning chip through a positioning antenna socket, where the positioning chip is ATGM332D in model, supports multiple satellite navigation systems, can receive GNSS signals of six satellite navigation systems simultaneously, and realizes combined positioning, navigation and time service, and has advantages of high sensitivity, low power consumption, low cost, and the like.
It should be understood that the current operation monitoring equipment can be fixedly arranged at an on-duty place and can also be worn on an on-duty worker; when the current operation monitoring equipment is worn on the person of the on-duty worker, the processor module can confirm whether the working position of the current operation monitoring equipment is in the position where the current operation monitoring equipment should be located, can confirm the working preset area of the current operation monitoring equipment in an electronic fence mode, and reports the working range of the current operation monitoring equipment to the user terminal through the processor module when the current operation monitoring equipment leaves the preset area.
In this embodiment, the user terminal is any one of a mobile phone, a tablet computer, a notebook computer, a desktop computer, an intelligent watch, and a VR (Virtual Reality, abbreviated as VR) wearable device.
And the power supply module is used for providing electric power support for the processor module, the reminding module and the positioning and time service module.
Specifically, the power supply module comprises a direct current input module and a standby power supply module;
a dc input module, as shown in fig. 9, configured to receive the commercial power, convert the commercial power into a dc voltage, and then transmit the dc voltage to the standby power module, the processor module, the reminding module, and the positioning and timing module;
the standby power supply module, as shown in fig. 10, is configured to receive the dc voltage transmitted by the dc input module, perform charging, and transmit the dc voltage to the power supply module, the processor module, the reminder module, and the positioning and timing module when the dc input module does not receive the commercial power.
The embodiment is convenient for realizing the on-duty management of the workers, can ensure the authenticity of the in-place condition of the workers, and can be used for the on-duty management of other fields, such as sanitation workers, guard of house names and hotel operators on-duty, besides the management of the railway operators on-duty. Specifically, in the implementation process of the embodiment, firstly, the processor module sends a reminding instruction to the reminding module in a preset time, and the reminding module executes a reminding operation after receiving the reminding instruction and sends a reminder to an on-duty worker; after receiving the prompt, the on-duty worker can confirm the in-place condition by pressing, and at the moment, the key module acquires a response signal of the user and sends the response signal to the processor module; in the process, the positioning and time service module receives positioning data and time service data of the GPS and/or the Beidou system and then sends the positioning data and the time service data to the processor module; the processor module receives the positioning data and the time service data in real time, stops sending a reminding instruction to the reminding module after receiving the response signal, and sends the positioning data and the time service data of the equipment to the user terminal, so that the condition that the on-duty worker is in place and the on-duty position information are sent to the user terminal, a manager can master the in-place condition of the on-duty worker, and false conditions are avoided.
Further, the circuit for operation monitoring device of the present embodiment further includes a communication module;
and the communication module is used for realizing wireless communication between the processor module and the user terminal.
Specifically, as shown in fig. 6, the communication module includes a communication antenna, a communication chip and a SIM card;
the communication antenna is used for receiving the signal sent by the user terminal and then sending the received signal to the communication chip; the system is also used for sending information such as voice information, positioning data, time service data signals and appointed operation monitoring equipment information sent by the communication chip to the user terminal in a signal form;
the communication chip is used for converting signals received by the communication antenna into digital signals, then transmitting the digital signals to the processor module, converting the signals sent by the processor module into analog signals and sending the analog signals to the communication antenna;
and the SIM card is used for storing the information of the specified operation monitoring equipment and sending the information of the specified operation monitoring equipment to the communication chip. It should be understood that the SIM card is used to implement the function of binding the signal sent from the information communication chip of the designated job monitoring device to the user terminal, so that the user terminal corresponds the corresponding positioning information, time information, and the like to the designated job monitoring device.
Further, the circuit for the operation monitoring device of the embodiment further includes a display module;
and the display module is used for receiving the transceiving positioning data and the time service data sent by the processor module and displaying the positioning information and the time service information. In this embodiment, fig. 7 is a schematic circuit diagram of the display module.
It should be understood that the circuit for the operation monitoring device of this embodiment further includes a storage module for storing various data, a schematic circuit diagram of the storage module is shown in fig. 8, in this embodiment, the storage module is implemented by a memory with a model of MX25L6406, which can provide a low-cost system-type storage solution for various electronic products, and is widely applied to various fields such as handheld mobile terminals, consumer electronic products, personal computers and peripherals, networks, telecommunication devices, medical devices, office devices, automotive electronics, and industrial control devices.
In this embodiment, the communication chip, the storage module and the display module also provide power support through the power module.
Example 2:
on the basis of embodiment 1, the present embodiment discloses an operating method of a circuit for an operation monitoring device, including the steps of:
s1, a processor module sends a reminding instruction to a reminding module in preset time, and the reminding module executes reminding operation after receiving the reminding instruction;
s2, the key module acquires a response signal of a user and sends the response signal to the processor module;
s3, the positioning and time service module receives positioning data and time service data of the GPS and/or the Beidou system and then sends the positioning data and the time service data to the processor module;
and S4, the processor module receives the positioning data and the time service data in real time, stops sending a reminding instruction to the reminding module after receiving the response signal, and simultaneously sends the positioning data and the time service data of the equipment to the user terminal.
Further, in step S4, the processor module receives and analyzes the positioning data and the time service data in real time, and then determines whether the positioning data corresponds to the predetermined area positioning data, and if not, the processor module sends the information about leaving the working range to the user terminal.
The various embodiments described above are merely illustrative, and may or may not be physically separate, as they relate to elements illustrated as separate components; if reference is made to a component displayed as a unit, it may or may not be a physical unit, and may be located in one place or distributed over a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. Such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Finally, it should be noted that the present invention is not limited to the above-mentioned alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (6)

1. A circuit for operation monitoring equipment, characterized in that: the device comprises a processor module, a reminding module, a key module, a positioning and time service module and a power supply module;
the processor module is used for sending a reminding instruction to the reminding module at preset time, stopping sending the reminding instruction to the reminding module after receiving the response signal, and receiving and sending positioning data and time service data;
the reminding module is used for receiving the reminding instruction of the processor module and executing the reminding operation after receiving the reminding instruction;
the key module is used for acquiring a response signal and sending the response signal to the processor module;
the positioning and time service module is used for acquiring positioning data and time service data of the current operation monitoring equipment and then sending the positioning data and the time service data to the processor module;
and the power supply module is used for providing electric power support for the processor module, the reminding module and the positioning and time service module.
2. A circuit for an operation monitoring device according to claim 1, characterized in that: the device also comprises a communication module;
and the communication module is used for realizing wireless communication between the processor module and the user terminal.
3. A circuit for an operation monitoring device according to claim 2, characterized in that: the communication module comprises a communication antenna, a communication chip and an SIM card;
the communication antenna is used for receiving a signal sent by the user terminal and then sending the received signal to the communication chip; the communication chip is also used for sending signals sent by the communication chip to the user terminal;
the communication chip is used for converting signals received by the communication antenna into digital signals, then transmitting the digital signals to the processor module, converting the signals sent by the processor module into analog signals and sending the analog signals to the communication antenna;
and the SIM card is used for storing the information of the appointed operation monitoring equipment and sending the information of the appointed operation monitoring equipment to the communication chip.
4. A circuit for an operation monitoring device according to claim 1, characterized in that: the device also comprises a display module;
and the display module is used for receiving the transceiving positioning data and the time service data sent by the processor module and displaying the positioning information and the time service information.
5. A circuit for an operation monitoring device according to claim 1, characterized in that: the power supply module comprises a direct current input module and a standby power supply module;
the direct current input module is used for receiving commercial power, converting the commercial power into direct current voltage, and then transmitting the direct current voltage to the standby power supply module, the processor module, the reminding module and the positioning and time service module;
the standby power supply module is used for receiving and charging the direct-current voltage transmitted by the direct-current input module, and then transmitting the direct-current voltage to the power supply module, the processor module, the reminding module and the positioning and time service module when the direct-current input module does not receive commercial power.
6. A circuit for an operation monitoring device according to claim 1, characterized in that: the reminding module executes reminding operation in a mode of ringing, lighting and/or vibration.
CN201921477576.1U 2019-09-05 2019-09-05 Circuit for operation monitoring equipment Active CN210271195U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921477576.1U CN210271195U (en) 2019-09-05 2019-09-05 Circuit for operation monitoring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921477576.1U CN210271195U (en) 2019-09-05 2019-09-05 Circuit for operation monitoring equipment

Publications (1)

Publication Number Publication Date
CN210271195U true CN210271195U (en) 2020-04-07

Family

ID=70018904

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921477576.1U Active CN210271195U (en) 2019-09-05 2019-09-05 Circuit for operation monitoring equipment

Country Status (1)

Country Link
CN (1) CN210271195U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110443985A (en) * 2019-09-05 2019-11-12 广东北斗星盛教育科技有限公司 A kind of monitoring operation sets stand-by circuit and its working method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110443985A (en) * 2019-09-05 2019-11-12 广东北斗星盛教育科技有限公司 A kind of monitoring operation sets stand-by circuit and its working method

Similar Documents

Publication Publication Date Title
CN106714260B (en) Positioning and communication system and method based on LORA
CN103900592B (en) The based reminding method of a kind of trip of driving and system
CN105575044A (en) Virtual electronic fence positioning method, device, monitoring method and system
CN103200222A (en) Automobile intelligent monitoring system based on mobile communication wireless network
CN102055859A (en) Monitoring method for handheld school message system and monitoring equipment thereof
CN105468700A (en) Intelligent wearable device and public transport inquiring method
CN105575052A (en) Security early warning system and method
CN203455865U (en) Intelligent school bus stop reporting and roll-call system
CN110716220A (en) High-precision positioning mobile terminal and high-precision positioning method
CN210271195U (en) Circuit for operation monitoring equipment
CN202135327U (en) Positioning and monitoring system
CN203192046U (en) Electronic patrol monitoring device and system
CN101494901B (en) Method and system for locating mobile terminal, and communication equipment thereof
CN109919492B (en) Sanitation resource scheduling method, device and system
CN103419814A (en) Train arrival automatic reminding method and device
CN104392627A (en) Intelligent traffic monitoring system
CN104468643A (en) A monitoring method for a portable school message system and an associated device thereof
CN204348084U (en) A kind of intelligent traffic monitoring system
CN101232801B (en) Embedded type automobile safe and guard integrated system
CN103612614A (en) Anti-theft tracking device of automobile
CN204965010U (en) Multi -function watch and because remote monitering system of multi -function watch
CN102227144A (en) Intelligent taxi taking system for using mobile phone to call taxi
CN104464354A (en) Electronic bus-stop board
CN102155946A (en) Vehicle-mounted terminal
CN201127164Y (en) Built-in vehicle safety protection integrated system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant