CN202442778U - Cheat-preventing road-surface weighing system - Google Patents
Cheat-preventing road-surface weighing system Download PDFInfo
- Publication number
- CN202442778U CN202442778U CN2012200479686U CN201220047968U CN202442778U CN 202442778 U CN202442778 U CN 202442778U CN 2012200479686 U CN2012200479686 U CN 2012200479686U CN 201220047968 U CN201220047968 U CN 201220047968U CN 202442778 U CN202442778 U CN 202442778U
- Authority
- CN
- China
- Prior art keywords
- pressure transducer
- current value
- working power
- weighing system
- surface weighing
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Road Signs Or Road Markings (AREA)
Abstract
The utility model provides a cheat-preventing road-surface weighing system which is designed for solving the problems that by using a road-surface weighing system in the prior art, electrical signals output by a pressure sensor are possibly interfered by electrical signals emitted by a cheating device, so that the electrical signals output by the pressure sensor, received by the road-surface weighing system, deviate from actual values, and the like. A device for monitoring the current value of a working power supply of a pressure sensor is added on a connecting wire of the working power supply of the pressure sensor and is used for monitoring the current value of the working power supply of the pressure sensor; when the current value of the working power supply of the pressure sensor deviates from a preset range, the monitoring device emits an alarm; and the preset range of the current value of the working power supply of the pressure sensor is determined according to the type, number and connection mode of the pressure sensor. The cheat-preventing road-surface weighing system provided by the utility model has the beneficial effects that: the interference caused by cheating devices on the road-surface weighing system can be effectively avoided, and a situation that whether a cheating device is connected to the road-surface weighing system can be detected timely, thereby avoiding various losses caused by cheating.
Description
Technical field
The utility model relates to the road surface weighing system, specially refers to a kind of road surface weighing system of practising fraud of preventing.
Background technology
When receiving goods, adopt the road surface weighing system that the goods of vehicle and loading thereof is taken by weighing weight usually, deduct the weight of trying to achieve institute's cargo after the weight of vehicle self again in slip-road or goods yard.Mostly adopts pressure sensor is as the sensing element that takes by weighing weight for prior art road surface weighing system, and pressure transducer is exported electric signal under the effect of pressure, and along with the increase of weight (being pressure), the electric signal of pressure transducer output is strong more.Obviously, receive the electric signal of pressure transducer output and, can obtain the gravimetric value of corresponding weight (being pressure) and be presented on the display screen through after handling and converting.Usually, pressure transducer need apply working power ability operate as normal, and therefore, pressure transducer has four lead-in wires at least, wherein, and two connecting lines, two connecting lines as electric signal output as the pressure transducer working power.
For escape pay the fees, or for practising fraud; Some lawless person is employed in the normal operation that the mode that connects cheating device on the pressure transducer electric signal output connecting line is disturbed the road surface weighing system, and the gravimetric value that display screen is shown is below or above the actual weight value.Usually; So-called cheating device comprises two parts; A part is connected on the pressure transducer electric signal output connecting line, and this part can receive remote signal and can send electric signal according to telecommand, makes the electric signal of the pressure transducer output that the road surface weighing system receives depart from actual value; Another part is a telechiric device.When the load-carrying lorry is taking by weighing weight; The lawless person opens telepilot and sends instruction to the cheating device that is connected the pressure transducer output terminal; Cheating device sends the electric signal that electric signal disturbs pressure transducer output, makes the electric signal of the pressure transducer output that the road surface weighing system receives depart from actual value, demonstrates the gravimetric value that is lower than or is higher than actual weight; Thereby underpay and receive toll, perhaps overcharge and get the goods money.
Summary of the invention
Possibly sent the electric signal that electric signal disturbs pressure transducer output by cheating device for solving prior art road surface weighing system; Make the electric signal of the pressure transducer output that the road surface weighing system receives depart from actual value; Demonstrate the problems such as gravimetric value that are lower than or are higher than actual weight, the utility model proposes a kind of road surface weighing system of practising fraud of preventing.The utility model prevents that the road surface weighing system of practising fraud from installing pressure transducer working power current value supervising device additional the current value of pressure transducer working power is monitored on pressure transducer working power connecting line; When the current value of pressure transducer working power departed from setting range, supervising device sent warning; The setting range of said pressure transducer working power current value is confirmed according to model, quantity and the connected mode of pressure transducer.
Further, the setting range of the pressure transducer working power current value of the utility model road surface weighing system of preventing to practise fraud can be set according to model, quantity and the connected mode of pressure transducer at the scene.
Further, the pressure transducer working power current value supervising device of the road surface weighing system that the utility model prevents to practise fraud comprises: current detection circuit, current value initialization circuit and warning circuit, wherein,
Current detection circuit is monitored the current value of pressure transducer working power in real time, when the electric current of being monitored in setting range, then do not send alerting signal; When the electric current of being monitored exceeds setting range, then send alerting signal;
The current value initialization circuit can be set the current value range that current detection circuit does not send alerting signal according to model, quantity and the connected mode of pressure transducer;
Warning circuit can send warning according to the alerting signal that receives.
Further; The current detection circuit of the road surface weighing system that the utility model prevents to practise fraud is monitored the current value that adopts direct-on-line test pressure working sensor power supply in real time to the current value of pressure transducer working power; Perhaps, convert the current value of pressure transducer working power again to through a certain magnitude of voltage in the electric current and voltage conversion on-line testing pressure transducer working power circuit.
Further, the warning circuit of the utility model road surface weighing system of preventing to practise fraud can send sound, light or/and the vibrations alerting signal.
The useful technique effect of the road surface weighing system that the utility model prevents to practise fraud is the interference that can effectively avoid cheating device road pavement weighing system; In time detect in the weighing system of road surface whether inserted cheating device, avoid the various losses that cause because of cheating.
Description of drawings
Accompanying drawing 1 is the conspectus that prior art road surface weighing system adopts single pressure sensor embodiment;
Accompanying drawing 2 adopts the conspectus of single pressure sensor embodiment for the utility model prevents the road surface weighing system of practising fraud.
Below in conjunction with accompanying drawing and specific embodiment the utility model is prevented that the road surface weighing system of practising fraud is further described.
Embodiment
Accompanying drawing 1 is the conspectus that prior art road surface weighing system adopts four pressure transducer embodiment; Among the figure; R1, R2, R3 and R4 are respectively four resistance strain gages that bridge-type is connected; U is the connecting line of pressure transducer working power, and V is pressure transducer electric signal output connecting line, and A is a cheating device.Can know by figure; Mostly adopts pressure sensor is as the sensing element that takes by weighing weight for prior art road surface weighing system, and pressure transducer is exported electric signal under the effect of pressure, and; Along with the increase of pressure (being weight), the electric signal of pressure transducer output is strong more.Obviously, receive the electric signal of pressure transducer output and, can obtain the gravimetric value of relevant pressure (being weight) and be presented on the display screen through after handling and converting.Usually, pressure transducer need apply working power ability operate as normal, and therefore, pressure transducer has four lead-in wires at least, wherein, and two connecting lines, two connecting lines as electric signal output as the pressure transducer working power.For escape pay the fees, or for practising fraud; Some lawless person is employed in the normal operation that the mode that connects cheating device on the pressure transducer electric signal output connecting line is disturbed the road surface weighing system, and the gravimetric value that display screen is shown is below or above the actual weight value.Usually; So-called cheating device comprises two parts; A part is connected on the pressure transducer electric signal output connecting line (shown in dotted line in the accompanying drawing 1); This part can receive remote signal and can send electric signal according to telecommand, makes the electric signal of the pressure transducer output that the road surface weighing system receives depart from actual value; Another part is a telechiric device.When the load-carrying lorry is taking by weighing weight; The lawless person opens telepilot and sends instruction to the cheating device that is connected the pressure transducer output terminal; Cheating device sends the electric signal that electric signal disturbs pressure transducer output, makes the electric signal of the pressure transducer output that the road surface weighing system receives depart from actual value, demonstrates the gravimetric value that is lower than or is higher than actual weight; Thereby underpay and receive toll, perhaps overcharge and get the goods money.Need to prove; The cheating device that is connected on the pressure transducer electric signal output connecting line needs power supply ability operate as normal; Therefore, the power lead of this cheating device also need be connected on the working power connecting line of pressure transducer (shown in dotted line in the accompanying drawing 1).
Accompanying drawing 2 adopts the conspectus of four pressure transducer embodiment for the utility model prevents the road surface weighing system of practising fraud; Among the figure; R1, R2, R3 and R4 are respectively four resistance strain gages that bridge-type is connected, and U is the connecting line of pressure transducer working power, and V is pressure transducer electric signal output connecting line; A is a cheating device, and B is a pressure transducer working power current value supervising device.Can know by figure; The utility model prevents that the road surface weighing system of practising fraud from installing pressure transducer working power current value supervising device additional on pressure transducer working power connecting line; Current value to the pressure transducer working power is monitored; When the current value of pressure transducer working power departed from setting range, supervising device sent warning; The setting range of said pressure transducer working power current value is confirmed according to model, quantity and the connected mode of pressure transducer.Usually, after model, quantity and the connected mode of the pressure transducer that the road surface weighing system is adopted confirmed, the current value of working power was substantially invariable, and its fluctuation range is less.Because the cheating device of cut-in pressure sensor electrical signal output connecting line need receive remote signal and send the interference electric signal, therefore, this cheating device needs power supply ability operate as normal.The lawless person is connected to the power lead of this cheating device on the working power connecting line of pressure transducer usually, obtains power supply with this.Yet; Because the access of this cheating device will cause the unusual fluctuations of pressure transducer working power current value, therefore; Can judge the access whether cheating device is arranged in the weighing system of road surface through the unusual fluctuations situation of detected pressures working sensor source current value.The utility model prevents that the road surface weighing system of practising fraud from installing pressure transducer working power current value supervising device (in the accompanying drawing 2 shown in the B) additional on pressure transducer working power connecting line; Through monitoring to pressure transducer working power current value; Judge whether it exceeds setting range; When the current value of pressure transducer working power departs from setting range, supervising device will send warning.Be to adapt to the different road weighing system, the setting range of the pressure transducer working power current value of the road surface weighing system that the utility model prevents to practise fraud can be set according to model, quantity and the connected mode of pressure transducer at the scene.
Obviously; The pressure transducer working power current value supervising device of the road surface weighing system that the utility model prevents to practise fraud comprises: current detection circuit, current value initialization circuit and warning circuit; Wherein, Current detection circuit is monitored the current value of pressure transducer working power in real time, when the electric current of being monitored in setting range, then do not send alerting signal; When the electric current of being monitored exceeds setting range, then send alerting signal; The current value initialization circuit can be set the current value range that current detection circuit does not send alerting signal according to model, quantity and the connected mode of pressure transducer; Warning circuit can send warning according to the alerting signal that receives.
According to the amperometric determination principle; The current detection circuit of the road surface weighing system that the utility model prevents to practise fraud is monitored the current value that adopts direct-on-line test pressure working sensor power supply in real time to the current value of pressure transducer working power; Perhaps, convert the current value of pressure transducer working power again to through a certain magnitude of voltage in the electric current and voltage conversion on-line testing pressure transducer working power circuit.
In order to guarantee the effect of reporting to the police, the warning circuit of the road surface weighing system that the utility model prevents to practise fraud can send sound, light or/and the vibrations alerting signal.
Obviously; The useful technique effect of the road surface weighing system that the utility model prevents to practise fraud is the interference that can effectively avoid cheating device road pavement weighing system; In time detect in the weighing system of road surface whether inserted cheating device, avoid the various losses that cause because of cheating.
Claims (5)
1. road surface weighing system that prevents to practise fraud; It is characterized in that: on pressure transducer working power connecting line, install pressure transducer working power current value supervising device additional the current value of pressure transducer working power is monitored; When the current value of pressure transducer working power departed from setting range, supervising device sent warning; The setting range of said pressure transducer working power current value is confirmed according to model, quantity and the connected mode of pressure transducer.
2. according to the said road surface weighing system of practising fraud of preventing of claim 1, it is characterized in that: the setting range of pressure transducer working power current value can be set according to model, quantity and the connected mode of pressure transducer at the scene.
3. according to the said road surface weighing system of practising fraud of preventing of claim 1, it is characterized in that: pressure transducer working power current value supervising device comprises: current detection circuit, current value initialization circuit and warning circuit, wherein,
Current detection circuit is monitored the current value of pressure transducer working power in real time, when the electric current of being monitored in setting range, then do not send alerting signal; When the electric current of being monitored exceeds setting range, then send alerting signal;
The current value initialization circuit can be set the current value range that current detection circuit does not send alerting signal according to model, quantity and the connected mode of pressure transducer;
Warning circuit can send warning according to the alerting signal that receives.
4. according to the said road surface weighing system of practising fraud of preventing of claim 3; It is characterized in that: current detection circuit is monitored the current value that adopts direct-on-line test pressure working sensor power supply in real time to the current value of pressure transducer working power; Perhaps, convert the current value of pressure transducer working power again to through a certain magnitude of voltage in the electric current and voltage conversion on-line testing pressure transducer working power circuit.
5. according to the said road surface weighing system of practising fraud of preventing of claim 3, it is characterized in that: warning circuit can send sound, light or/and the vibrations alerting signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200479686U CN202442778U (en) | 2012-02-15 | 2012-02-15 | Cheat-preventing road-surface weighing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200479686U CN202442778U (en) | 2012-02-15 | 2012-02-15 | Cheat-preventing road-surface weighing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442778U true CN202442778U (en) | 2012-09-19 |
Family
ID=46824222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200479686U Expired - Fee Related CN202442778U (en) | 2012-02-15 | 2012-02-15 | Cheat-preventing road-surface weighing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442778U (en) |
-
2012
- 2012-02-15 CN CN2012200479686U patent/CN202442778U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101107640B (en) | Wireless process field device diagnostic method | |
| JP2017158185A5 (en) | ||
| CN202119515U (en) | Weighbridge type vehicle weighing system | |
| CN105790324A (en) | Wireless charging system and metal foreign body detection method thereof | |
| US8022316B2 (en) | Method for determining a condition of a weighing device by monitoring the voltage of a communications line | |
| CN201746226U (en) | Crane lifting hook device with weighing function | |
| CN202442778U (en) | Cheat-preventing road-surface weighing system | |
| CN105336129A (en) | Alarm when construction machine approaches to high-voltage transmission line | |
| CN102538935A (en) | Road surface weighing system for preventing cheat | |
| CN218765556U (en) | Stroke detection type load monitoring device | |
| CN207976761U (en) | Cargo check weighing device on a kind of stacker loading platforms | |
| CN203799470U (en) | Infrared positioning alarm system | |
| CN110426118A (en) | A kind of electronic platform scale system monitoring cargo storage in real time | |
| CN203231800U (en) | Intelligent analogue weighing sensor | |
| CN102633197B (en) | Torque limitation alarm device for straight-arm-type lorry-mounted crane | |
| CN210638831U (en) | Pressure sensor gasket | |
| CN108072816A (en) | A kind of Cable fault examination communication system | |
| CN102815380A (en) | System for detecting ship overload | |
| CN107255507A (en) | Passive detecting system and its detection method of weighing of onboard wireless | |
| CN203069712U (en) | Fault indication apparatus | |
| CN202350915U (en) | Vibration transmitter | |
| CN204043764U (en) | Shovel loader intelligent weighing system | |
| CN203224265U (en) | Membrane type gas meter | |
| CN103175597A (en) | Remote truck deadweight identifier | |
| CN105371899A (en) | Temperature-humidity sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20140215 |